diff --git a/.gitignore b/.gitignore
index 4d34353..3527fed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@ bower_components
 npm-debug.log
 tmp
 /cassowary.js
+/.idea
+.DS_Store
+/dist
diff --git a/Gruntfile.js b/Gruntfile.js
deleted file mode 100644
index 00f419b..0000000
--- a/Gruntfile.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/*global module:false*/
-module.exports = function(grunt) {
-
-  // Project configuration.
-  grunt.initConfig({
-    peg: {
-      parser: {
-        src: 'src/parser/parser.peg',
-        dest: 'src/parser/parser.js',
-        options: {
-          wrapper: function(src, parser) {
-            return 'export default ' + parser + ';';
-          }
-        }
-      },
-      parserExt: {
-        src: 'src/parser/parserExt.peg',
-        dest: 'src/parser/parserExt.js',
-        options: {
-          wrapper: function(src, parser) {
-            return 'export default ' + parser + ';';
-          }
-        }
-      }
-    },
-    eslint: {
-      target: ['src/*.js', 'test/*.js'],
-      options: {
-        config: '.eslintrc'
-      }
-    },
-    jscs: {
-        src: ['src/*.js', 'test/*.js'],
-        options: {
-            config: '.jscsrc'
-        }
-    },
-    concat: {
-      jsdoc2md: {
-        src: ['src/View.js', 'src/SubView.js', 'src/VisualFormat.js', 'src/Attribute.js', 'src/Relation.js', 'src/Priority.js'],
-        dest: 'tmp/concat.js'
-      }
-    },
-    jsdoc2md: {
-      output: {
-        options: {
-          'global-index-format': 'none',
-          'module-index-format': 'none'
-        },
-        src: 'tmp/concat.js',
-        dest: 'docs/AutoLayout.md'
-      }
-    },
-    exec: {
-      'bundle-es6': 'node ./build/bundle-es6',
-      'dist': 'node ./build/dist',
-      'dist-fast': 'node ./build/dist --fast',
-      test: 'mocha',
-      bench: 'node bench/main.js'
-    }
-  });
-
-  // These plugins provide necessary tasks.
-  grunt.loadNpmTasks('grunt-eslint');
-  grunt.loadNpmTasks('grunt-jscs');
-  grunt.loadNpmTasks('grunt-jsdoc-to-markdown');
-  grunt.loadNpmTasks('grunt-peg');
-  grunt.loadNpmTasks('grunt-exec');
-  grunt.loadNpmTasks('grunt-contrib-concat');
-
-  // Tasks
-  grunt.registerTask('lint', ['eslint', 'jscs']);
-  grunt.registerTask('doc', ['concat', 'jsdoc2md']);
-  grunt.registerTask('parser', ['peg']);
-  grunt.registerTask('test', ['exec:test']);
-  grunt.registerTask('bench', ['exec:bench']);
-  grunt.registerTask('dist', ['parser', 'exec:bundle-es6', 'exec:dist']);
-  grunt.registerTask('default', ['lint', 'doc', 'dist', 'test']);
-  grunt.registerTask('fast', ['lint', 'parser', 'exec:bundle-es6', 'exec:dist-fast', 'test']);
-};
diff --git a/bower.json b/bower.json
deleted file mode 100644
index bdda2c2..0000000
--- a/bower.json
+++ /dev/null
@@ -1,45 +0,0 @@
-{
-  "name": "autolayout.js",
-  "version": "0.6.0",
-  "homepage": "https://github.com/IjzerenHein/autolayout.js",
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/IjzerenHein/autolayout.js.git"
-  },
-  "authors": [
-    "Hein Rutjes <hrutjes@gmail.com>"
-  ],
-  "description": "Apple's Auto Layout and Visual Format Language for javascript (using cassowary constraints)s",
-  "main": "dist/autolayout.js",
-  "keywords": [
-    "autolayout",
-    "autolayoutjs",
-    "autolayout.js",
-    "auto-layout",
-    "cassowary",
-    "cassowaryjs",
-    "cassowary.js",
-    "vfl",
-    "evfl",
-    "visualformatlanguage"
-  ],
-  "license": "MIT",
-  "ignore": [
-    "**/.*",
-    "node_modules",
-    "bower_components",
-    "test",
-    "logo",
-    "docs",
-    "bench",
-    "examples",
-    "Gruntfile.js",
-    "bundle-es6.js",
-    "logo.png",
-    "example.png",
-    "CONTRIBUTING.md",
-    ".editorconfig",
-    ".eslintrc",
-    ".jscsrc"
-  ]
-}
diff --git a/build/bundle-es6.js b/build/bundle-es6.js
deleted file mode 100644
index 8f59f7d..0000000
--- a/build/bundle-es6.js
+++ /dev/null
@@ -1,15 +0,0 @@
-var fs = require('fs');
-var esperanto = require('esperanto');
-
-esperanto.bundle({
-  entry: 'src/AutoLayout.js', // the '.js' is optional
-  skip: [
-    'kiwi.js',
-    'cassowary/bin/c'
-  ]
-}).then(function(bundle) {
-  var cjs = bundle.toCjs();
-  fs.writeFile('tmp/autolayout.es6', cjs.code);
-}, function(err) {
-    console.log(err);
-});
diff --git a/build/dist.js b/build/dist.js
deleted file mode 100644
index 0957d7d..0000000
--- a/build/dist.js
+++ /dev/null
@@ -1,86 +0,0 @@
-var fs = require('fs');
-var path = require('path');
-var browserify = require('browserify');
-var babelify = require('babelify');
-var envify = require('envify/custom');
-var CombinedStream = require('combined-stream');
-var argv = require('minimist')(process.argv.slice(2));
-
-var packageJSON = JSON.parse(fs.readFileSync('./package.json'));
-
-var banner = '' +
-'/**\n' +
-'* AutoLayout.js is licensed under the MIT license. If a copy of the\n' +
-'* MIT-license was not distributed with this file, You can obtain one at:\n' +
-'* http://opensource.org/licenses/mit-license.html.\n' +
-'*\n' +
-'* @author: Hein Rutjes (IjzerenHein)\n' +
-'* @license MIT\n' +
-'* @copyright Gloey Apps, 2017\n' +
-'*\n' +
-'* @library autolayout.js\n' +
-'* @version ' + packageJSON.version + '\n' +
-'*/\n';
-var cassowaryBanner = '' +
-'/**\n' +
-'* Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)\n' +
-'* Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros\n' +
-'*\n' +
-'* Use of this source code is governed by the LGPL, which can be found in the\n' +
-'* COPYING.LGPL file.\n' +
-'*/\n';
-var kiwiBanner = '' +
-'/*-----------------------------------------------------------------------------\n' +
-'| Kiwi (TypeScript version)\n' +
-'|\n' +
-'| Copyright (c) 2014, Nucleic Development Team & H. Rutjes.\n' +
-'|\n' +
-'| Distributed under the terms of the Modified BSD License.\n' +
-'|\n' +
-'| The full license is in the file COPYING.txt, distributed with this software.\n' +
-'|----------------------------------------------------------------------------*/\n';
-
-function dist(kiwi, minify) {
-    var input = CombinedStream.create();
-    input.append(!kiwi ? 'var c = require(\'cassowary/bin/c\')\n' : 'var kiwi = require(\'kiwi.js\')\n');
-    input.append(fs.createReadStream('./tmp/autolayout.es6'));
-    var output = fs.createWriteStream('dist/autolayout' + (kiwi ? '.kiwi' : '') + (minify ? '.min' : '') + '.js');
-    output.write(banner);
-    output.write(kiwi ? kiwiBanner : cassowaryBanner);
-    var b = browserify(input, {
-        debug: minify,
-        standalone: 'AutoLayout',
-        banner: banner
-    });
-    b = b.transform(babelify.configure({
-        compact: false,
-        presets: ['es2015'],
-        ignore: /\/kiwi\//
-    }));
-    b = b.transform(envify({
-        CASSOWARYJS: !kiwi
-    }));
-    if (minify) {
-        b.plugin('minifyify', {
-            map: 'autolayout.min.map',
-            output: 'dist/autolayout.min.map',
-            compressPath: function(p) {
-                if (p.indexOf('kiwi') >= 0) {
-                    return path.relative('node_modules/kiwi.js/lib', p);
-                }
-                else {
-                    return path.relative('tmp', p);
-                }
-            }
-        });
-    }
-    b.bundle().on('error', function(err) {
-        console.log('Error : ' + err.message);
-    }).pipe(output);
-}
-dist(false, false);
-if (!argv.fast) {
-    dist(false, true);
-    dist(true, false);
-}
-//dist(true, true);
diff --git a/dist/autolayout.js b/dist/autolayout.js
deleted file mode 100644
index 2dc27ce..0000000
--- a/dist/autolayout.js
+++ /dev/null
@@ -1,5365 +0,0 @@
-/**
-* AutoLayout.js is licensed under the MIT license. If a copy of the
-* MIT-license was not distributed with this file, You can obtain one at:
-* http://opensource.org/licenses/mit-license.html.
-*
-* @author: Hein Rutjes (IjzerenHein)
-* @license MIT
-* @copyright Gloey Apps, 2017
-*
-* @library autolayout.js
-* @version 0.7.0
-*/
-/**
-* Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)
-* Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros
-*
-* Use of this source code is governed by the LGPL, which can be found in the
-* COPYING.LGPL file.
-*/
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.AutoLayout = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-'use strict';
-
-var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
-var c = require('cassowary/bin/c');
-'use strict';
-
-/**
- * Layout attributes.
- * @enum {String}
- */
-var Attribute = {
-  CONST: 'const',
-  NOTANATTRIBUTE: 'const',
-  VARIABLE: 'var',
-  LEFT: 'left',
-  RIGHT: 'right',
-  TOP: 'top',
-  BOTTOM: 'bottom',
-  WIDTH: 'width',
-  HEIGHT: 'height',
-  CENTERX: 'centerX',
-  CENTERY: 'centerY',
-  /*LEADING: 'leading',
-  TRAILING: 'trailing'*/
-  /** Used by the extended VFL syntax. */
-  ZINDEX: 'zIndex'
-};
-
-/**
- * Relation types.
- * @enum {String}
- */
-var Relation = {
-  /** Less than or equal */
-  LEQ: 'leq',
-  /** Equal */
-  EQU: 'equ',
-  /** Greater than or equal */
-  GEQ: 'geq'
-};
-
-/**
- * Layout priorities.
- * @enum {String}
- */
-var Priority = {
-  REQUIRED: 1000,
-  DEFAULTHIGH: 750,
-  DEFAULTLOW: 250
-  //FITTINGSIZELEVEL: 50,
-};
-
-var parser = function () {
-  /*
-   * Generated by PEG.js 0.8.0.
-   *
-   * http://pegjs.majda.cz/
-   */
-
-  function peg$subclass(child, parent) {
-    function ctor() {
-      this.constructor = child;
-    }
-    ctor.prototype = parent.prototype;
-    child.prototype = new ctor();
-  }
-
-  function SyntaxError(message, expected, found, offset, line, column) {
-    this.message = message;
-    this.expected = expected;
-    this.found = found;
-    this.offset = offset;
-    this.line = line;
-    this.column = column;
-
-    this.name = "SyntaxError";
-  }
-
-  peg$subclass(SyntaxError, Error);
-
-  function parse(input) {
-    var options = arguments.length > 1 ? arguments[1] : {},
-        peg$FAILED = {},
-        peg$startRuleFunctions = { visualFormatString: peg$parsevisualFormatString },
-        peg$startRuleFunction = peg$parsevisualFormatString,
-        peg$c0 = peg$FAILED,
-        peg$c1 = null,
-        peg$c2 = ":",
-        peg$c3 = { type: "literal", value: ":", description: "\":\"" },
-        peg$c4 = [],
-        peg$c5 = function peg$c5(o, superto, view, views, tosuper) {
-      return {
-        orientation: o ? o[0] : 'horizontal',
-        cascade: (superto || []).concat([view], [].concat.apply([], views), tosuper || [])
-      };
-    },
-        peg$c6 = "H",
-        peg$c7 = { type: "literal", value: "H", description: "\"H\"" },
-        peg$c8 = "V",
-        peg$c9 = { type: "literal", value: "V", description: "\"V\"" },
-        peg$c10 = function peg$c10(orient) {
-      return orient == 'H' ? 'horizontal' : 'vertical';
-    },
-        peg$c11 = "|",
-        peg$c12 = { type: "literal", value: "|", description: "\"|\"" },
-        peg$c13 = function peg$c13() {
-      return { view: null };
-    },
-        peg$c14 = "[",
-        peg$c15 = { type: "literal", value: "[", description: "\"[\"" },
-        peg$c16 = "]",
-        peg$c17 = { type: "literal", value: "]", description: "\"]\"" },
-        peg$c18 = function peg$c18(view, predicates) {
-      return extend(view, predicates ? { constraints: predicates } : {});
-    },
-        peg$c19 = "-",
-        peg$c20 = { type: "literal", value: "-", description: "\"-\"" },
-        peg$c21 = function peg$c21(predicateList) {
-      return predicateList;
-    },
-        peg$c22 = function peg$c22() {
-      return [{ relation: 'equ', constant: 'default', $parserOffset: offset() }];
-    },
-        peg$c23 = "",
-        peg$c24 = function peg$c24() {
-      return [{ relation: 'equ', constant: 0, $parserOffset: offset() }];
-    },
-        peg$c25 = function peg$c25(n) {
-      return [{ relation: 'equ', constant: n, $parserOffset: offset() }];
-    },
-        peg$c26 = "(",
-        peg$c27 = { type: "literal", value: "(", description: "\"(\"" },
-        peg$c28 = ",",
-        peg$c29 = { type: "literal", value: ",", description: "\",\"" },
-        peg$c30 = ")",
-        peg$c31 = { type: "literal", value: ")", description: "\")\"" },
-        peg$c32 = function peg$c32(p, ps) {
-      return [p].concat(ps.map(function (p) {
-        return p[1];
-      }));
-    },
-        peg$c33 = "@",
-        peg$c34 = { type: "literal", value: "@", description: "\"@\"" },
-        peg$c35 = function peg$c35(r, o, p) {
-      return extend({ relation: 'equ' }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c36 = "==",
-        peg$c37 = { type: "literal", value: "==", description: "\"==\"" },
-        peg$c38 = function peg$c38() {
-      return { relation: 'equ', $parserOffset: offset() };
-    },
-        peg$c39 = "<=",
-        peg$c40 = { type: "literal", value: "<=", description: "\"<=\"" },
-        peg$c41 = function peg$c41() {
-      return { relation: 'leq', $parserOffset: offset() };
-    },
-        peg$c42 = ">=",
-        peg$c43 = { type: "literal", value: ">=", description: "\">=\"" },
-        peg$c44 = function peg$c44() {
-      return { relation: 'geq', $parserOffset: offset() };
-    },
-        peg$c45 = /^[0-9]/,
-        peg$c46 = { type: "class", value: "[0-9]", description: "[0-9]" },
-        peg$c47 = function peg$c47(digits) {
-      return { priority: parseInt(digits.join(""), 10) };
-    },
-        peg$c48 = function peg$c48(n) {
-      return { constant: n };
-    },
-        peg$c49 = /^[a-zA-Z_]/,
-        peg$c50 = { type: "class", value: "[a-zA-Z_]", description: "[a-zA-Z_]" },
-        peg$c51 = /^[a-zA-Z0-9_]/,
-        peg$c52 = { type: "class", value: "[a-zA-Z0-9_]", description: "[a-zA-Z0-9_]" },
-        peg$c53 = function peg$c53(f, v) {
-      return { view: f + v };
-    },
-        peg$c54 = ".",
-        peg$c55 = { type: "literal", value: ".", description: "\".\"" },
-        peg$c56 = function peg$c56(digits, decimals) {
-      return parseFloat(digits.concat(".").concat(decimals).join(""), 10);
-    },
-        peg$c57 = function peg$c57(digits) {
-      return parseInt(digits.join(""), 10);
-    },
-        peg$currPos = 0,
-        peg$reportedPos = 0,
-        peg$cachedPos = 0,
-        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
-        peg$maxFailPos = 0,
-        peg$maxFailExpected = [],
-        peg$silentFails = 0,
-        peg$result;
-
-    if ("startRule" in options) {
-      if (!(options.startRule in peg$startRuleFunctions)) {
-        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
-      }
-
-      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
-    }
-
-    function text() {
-      return input.substring(peg$reportedPos, peg$currPos);
-    }
-
-    function offset() {
-      return peg$reportedPos;
-    }
-
-    function line() {
-      return peg$computePosDetails(peg$reportedPos).line;
-    }
-
-    function column() {
-      return peg$computePosDetails(peg$reportedPos).column;
-    }
-
-    function expected(description) {
-      throw peg$buildException(null, [{ type: "other", description: description }], peg$reportedPos);
-    }
-
-    function error(message) {
-      throw peg$buildException(message, null, peg$reportedPos);
-    }
-
-    function peg$computePosDetails(pos) {
-      function advance(details, startPos, endPos) {
-        var p, ch;
-
-        for (p = startPos; p < endPos; p++) {
-          ch = input.charAt(p);
-          if (ch === "\n") {
-            if (!details.seenCR) {
-              details.line++;
-            }
-            details.column = 1;
-            details.seenCR = false;
-          } else if (ch === "\r" || ch === '\u2028' || ch === '\u2029') {
-            details.line++;
-            details.column = 1;
-            details.seenCR = true;
-          } else {
-            details.column++;
-            details.seenCR = false;
-          }
-        }
-      }
-
-      if (peg$cachedPos !== pos) {
-        if (peg$cachedPos > pos) {
-          peg$cachedPos = 0;
-          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
-        }
-        advance(peg$cachedPosDetails, peg$cachedPos, pos);
-        peg$cachedPos = pos;
-      }
-
-      return peg$cachedPosDetails;
-    }
-
-    function peg$fail(expected) {
-      if (peg$currPos < peg$maxFailPos) {
-        return;
-      }
-
-      if (peg$currPos > peg$maxFailPos) {
-        peg$maxFailPos = peg$currPos;
-        peg$maxFailExpected = [];
-      }
-
-      peg$maxFailExpected.push(expected);
-    }
-
-    function peg$buildException(message, expected, pos) {
-      function cleanupExpected(expected) {
-        var i = 1;
-
-        expected.sort(function (a, b) {
-          if (a.description < b.description) {
-            return -1;
-          } else if (a.description > b.description) {
-            return 1;
-          } else {
-            return 0;
-          }
-        });
-
-        while (i < expected.length) {
-          if (expected[i - 1] === expected[i]) {
-            expected.splice(i, 1);
-          } else {
-            i++;
-          }
-        }
-      }
-
-      function buildMessage(expected, found) {
-        function stringEscape(s) {
-          function hex(ch) {
-            return ch.charCodeAt(0).toString(16).toUpperCase();
-          }
-
-          return s.replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\x08/g, '\\b').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\f/g, '\\f').replace(/\r/g, '\\r').replace(/[\x00-\x07\x0B\x0E\x0F]/g, function (ch) {
-            return '\\x0' + hex(ch);
-          }).replace(/[\x10-\x1F\x80-\xFF]/g, function (ch) {
-            return '\\x' + hex(ch);
-          }).replace(/[\u0180-\u0FFF]/g, function (ch) {
-            return '\\u0' + hex(ch);
-          }).replace(/[\u1080-\uFFFF]/g, function (ch) {
-            return '\\u' + hex(ch);
-          });
-        }
-
-        var expectedDescs = new Array(expected.length),
-            expectedDesc,
-            foundDesc,
-            i;
-
-        for (i = 0; i < expected.length; i++) {
-          expectedDescs[i] = expected[i].description;
-        }
-
-        expectedDesc = expected.length > 1 ? expectedDescs.slice(0, -1).join(", ") + " or " + expectedDescs[expected.length - 1] : expectedDescs[0];
-
-        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
-
-        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
-      }
-
-      var posDetails = peg$computePosDetails(pos),
-          found = pos < input.length ? input.charAt(pos) : null;
-
-      if (expected !== null) {
-        cleanupExpected(expected);
-      }
-
-      return new SyntaxError(message !== null ? message : buildMessage(expected, found), expected, found, pos, posDetails.line, posDetails.column);
-    }
-
-    function peg$parsevisualFormatString() {
-      var s0, s1, s2, s3, s4, s5, s6, s7;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = peg$parseorientation();
-      if (s2 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 58) {
-          s3 = peg$c2;
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c3);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s2 = [s2, s3];
-          s1 = s2;
-        } else {
-          peg$currPos = s1;
-          s1 = peg$c0;
-        }
-      } else {
-        peg$currPos = s1;
-        s1 = peg$c0;
-      }
-      if (s1 === peg$FAILED) {
-        s1 = peg$c1;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = peg$parsesuperview();
-        if (s3 !== peg$FAILED) {
-          s4 = peg$parseconnection();
-          if (s4 !== peg$FAILED) {
-            s3 = [s3, s4];
-            s2 = s3;
-          } else {
-            peg$currPos = s2;
-            s2 = peg$c0;
-          }
-        } else {
-          peg$currPos = s2;
-          s2 = peg$c0;
-        }
-        if (s2 === peg$FAILED) {
-          s2 = peg$c1;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseview();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$currPos;
-            s6 = peg$parseconnection();
-            if (s6 !== peg$FAILED) {
-              s7 = peg$parseview();
-              if (s7 !== peg$FAILED) {
-                s6 = [s6, s7];
-                s5 = s6;
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            } else {
-              peg$currPos = s5;
-              s5 = peg$c0;
-            }
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parseview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parsesuperview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-              if (s5 === peg$FAILED) {
-                s5 = peg$c1;
-              }
-              if (s5 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c5(s1, s2, s3, s4, s5);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseorientation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 72) {
-        s1 = peg$c6;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c7);
-        }
-      }
-      if (s1 === peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 86) {
-          s1 = peg$c8;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c9);
-          }
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c10(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parsesuperview() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 124) {
-        s1 = peg$c11;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c12);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c13();
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseview() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 91) {
-        s1 = peg$c14;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c15);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseviewName();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsepredicateListWithParens();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c1;
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 93) {
-              s4 = peg$c16;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c17);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c18(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseconnection() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 45) {
-        s1 = peg$c19;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c20);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateList();
-        if (s2 !== peg$FAILED) {
-          if (input.charCodeAt(peg$currPos) === 45) {
-            s3 = peg$c19;
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c20);
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c21(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c19;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c20);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c22();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          s1 = peg$c23;
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c24();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateList() {
-      var s0;
-
-      s0 = peg$parsesimplePredicate();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsepredicateListWithParens();
-      }
-
-      return s0;
-    }
-
-    function peg$parsesimplePredicate() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c25(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parsepredicateListWithParens() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c26;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c27);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c28;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c29);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parsepredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c28;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c29);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parsepredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c30;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c31);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c32(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c1;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c33;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c34);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c1;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c35(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserelation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c36) {
-        s1 = peg$c36;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c37);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c38();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c39) {
-          s1 = peg$c39;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c40);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c41();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c42) {
-            s1 = peg$c42;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c43);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c44();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseobjectOfPredicate() {
-      var s0;
-
-      s0 = peg$parseconstant();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parseviewName();
-      }
-
-      return s0;
-    }
-
-    function peg$parsepriority() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c45.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c46);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c47(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseconstant() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c48(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseviewName() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c49.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c50);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c49.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c50);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c51.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c52);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c51.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c52);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c53(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsenumber() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c45.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c46);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 46) {
-          s2 = peg$c54;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c55);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            while (s4 !== peg$FAILED) {
-              s3.push(s4);
-              if (peg$c45.test(input.charAt(peg$currPos))) {
-                s4 = input.charAt(peg$currPos);
-                peg$currPos++;
-              } else {
-                s4 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c46);
-                }
-              }
-            }
-          } else {
-            s3 = peg$c0;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c56(s1, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = [];
-        if (peg$c45.test(input.charAt(peg$currPos))) {
-          s2 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c46);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          while (s2 !== peg$FAILED) {
-            s1.push(s2);
-            if (peg$c45.test(input.charAt(peg$currPos))) {
-              s2 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s2 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c46);
-              }
-            }
-          }
-        } else {
-          s1 = peg$c0;
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c57(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function extend(dst) {
-      for (var i = 1; i < arguments.length; i++) {
-        for (var k in arguments[i]) {
-          dst[k] = arguments[i][k];
-        }
-      }
-      return dst;
-    }
-
-    peg$result = peg$startRuleFunction();
-
-    if (peg$result !== peg$FAILED && peg$currPos === input.length) {
-      return peg$result;
-    } else {
-      if (peg$result !== peg$FAILED && peg$currPos < input.length) {
-        peg$fail({ type: "end", description: "end of input" });
-      }
-
-      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
-    }
-  }
-
-  return {
-    SyntaxError: SyntaxError,
-    parse: parse
-  };
-}();
-
-var parserExt = function () {
-  /*
-   * Generated by PEG.js 0.8.0.
-   *
-   * http://pegjs.majda.cz/
-   */
-
-  function peg$subclass(child, parent) {
-    function ctor() {
-      this.constructor = child;
-    }
-    ctor.prototype = parent.prototype;
-    child.prototype = new ctor();
-  }
-
-  function SyntaxError(message, expected, found, offset, line, column) {
-    this.message = message;
-    this.expected = expected;
-    this.found = found;
-    this.offset = offset;
-    this.line = line;
-    this.column = column;
-
-    this.name = "SyntaxError";
-  }
-
-  peg$subclass(SyntaxError, Error);
-
-  function parse(input) {
-    var options = arguments.length > 1 ? arguments[1] : {},
-        peg$FAILED = {},
-        peg$startRuleFunctions = { visualFormatStringExt: peg$parsevisualFormatStringExt },
-        peg$startRuleFunction = peg$parsevisualFormatStringExt,
-        peg$c0 = peg$FAILED,
-        peg$c1 = "C:",
-        peg$c2 = { type: "literal", value: "C:", description: "\"C:\"" },
-        peg$c3 = [],
-        peg$c4 = null,
-        peg$c5 = function peg$c5(view, attribute, attributes, comments) {
-      return {
-        type: 'attribute',
-        view: view.view,
-        attributes: [attribute].concat(attributes)
-      };
-    },
-        peg$c6 = function peg$c6(attr, predicates) {
-      return { attr: attr, predicates: predicates };
-    },
-        peg$c7 = ":",
-        peg$c8 = { type: "literal", value: ":", description: "\":\"" },
-        peg$c9 = function peg$c9(o, superto, view, views, tosuper, comments) {
-      return {
-        type: 'vfl',
-        orientation: o ? o[0] : 'horizontal',
-        cascade: (superto || []).concat(view, [].concat.apply([], views), tosuper || [])
-      };
-    },
-        peg$c10 = "HV",
-        peg$c11 = { type: "literal", value: "HV", description: "\"HV\"" },
-        peg$c12 = function peg$c12() {
-      return 'horzvert';
-    },
-        peg$c13 = "H",
-        peg$c14 = { type: "literal", value: "H", description: "\"H\"" },
-        peg$c15 = function peg$c15() {
-      return 'horizontal';
-    },
-        peg$c16 = "V",
-        peg$c17 = { type: "literal", value: "V", description: "\"V\"" },
-        peg$c18 = function peg$c18() {
-      return 'vertical';
-    },
-        peg$c19 = "Z",
-        peg$c20 = { type: "literal", value: "Z", description: "\"Z\"" },
-        peg$c21 = function peg$c21() {
-      return 'zIndex';
-    },
-        peg$c22 = " ",
-        peg$c23 = { type: "literal", value: " ", description: "\" \"" },
-        peg$c24 = "//",
-        peg$c25 = { type: "literal", value: "//", description: "\"//\"" },
-        peg$c26 = { type: "any", description: "any character" },
-        peg$c27 = "|",
-        peg$c28 = { type: "literal", value: "|", description: "\"|\"" },
-        peg$c29 = function peg$c29() {
-      return { view: null };
-    },
-        peg$c30 = "[",
-        peg$c31 = { type: "literal", value: "[", description: "\"[\"" },
-        peg$c32 = ",",
-        peg$c33 = { type: "literal", value: ",", description: "\",\"" },
-        peg$c34 = "]",
-        peg$c35 = { type: "literal", value: "]", description: "\"]\"" },
-        peg$c36 = function peg$c36(view, views) {
-      return views.length ? [view].concat([].concat.apply([], views)) : view;
-    },
-        peg$c37 = function peg$c37(view, predicates, cascadedViews) {
-      return extend(extend(view, predicates ? { constraints: predicates } : {}), cascadedViews ? {
-        cascade: cascadedViews
-      } : {});
-    },
-        peg$c38 = function peg$c38(views, connection) {
-      return [].concat([].concat.apply([], views), [connection]);
-    },
-        peg$c39 = "->",
-        peg$c40 = { type: "literal", value: "->", description: "\"->\"" },
-        peg$c41 = function peg$c41() {
-      return [{ relation: 'none' }];
-    },
-        peg$c42 = "-",
-        peg$c43 = { type: "literal", value: "-", description: "\"-\"" },
-        peg$c44 = function peg$c44(predicateList) {
-      return predicateList;
-    },
-        peg$c45 = function peg$c45() {
-      return [{ relation: 'equ', constant: 'default' }];
-    },
-        peg$c46 = "~",
-        peg$c47 = { type: "literal", value: "~", description: "\"~\"" },
-        peg$c48 = function peg$c48() {
-      return [{ relation: 'equ', equalSpacing: true }];
-    },
-        peg$c49 = "",
-        peg$c50 = function peg$c50() {
-      return [{ relation: 'equ', constant: 0 }];
-    },
-        peg$c51 = function peg$c51(p) {
-      return [{ relation: 'equ', multiplier: p.multiplier }];
-    },
-        peg$c52 = function peg$c52(n) {
-      return [{ relation: 'equ', constant: n }];
-    },
-        peg$c53 = "(",
-        peg$c54 = { type: "literal", value: "(", description: "\"(\"" },
-        peg$c55 = ")",
-        peg$c56 = { type: "literal", value: ")", description: "\")\"" },
-        peg$c57 = function peg$c57(p, ps) {
-      return [p].concat(ps.map(function (p) {
-        return p[1];
-      }));
-    },
-        peg$c58 = "@",
-        peg$c59 = { type: "literal", value: "@", description: "\"@\"" },
-        peg$c60 = function peg$c60(r, o, p) {
-      return extend({ relation: 'equ' }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c61 = function peg$c61(r, o, p) {
-      return extend({ relation: 'equ', equalSpacing: true }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c62 = "==",
-        peg$c63 = { type: "literal", value: "==", description: "\"==\"" },
-        peg$c64 = function peg$c64() {
-      return { relation: 'equ' };
-    },
-        peg$c65 = "<=",
-        peg$c66 = { type: "literal", value: "<=", description: "\"<=\"" },
-        peg$c67 = function peg$c67() {
-      return { relation: 'leq' };
-    },
-        peg$c68 = ">=",
-        peg$c69 = { type: "literal", value: ">=", description: "\">=\"" },
-        peg$c70 = function peg$c70() {
-      return { relation: 'geq' };
-    },
-        peg$c71 = /^[0-9]/,
-        peg$c72 = { type: "class", value: "[0-9]", description: "[0-9]" },
-        peg$c73 = function peg$c73(digits) {
-      return { priority: parseInt(digits.join(""), 10) };
-    },
-        peg$c74 = function peg$c74(n) {
-      return { constant: n };
-    },
-        peg$c75 = function peg$c75(n) {
-      return { constant: -n };
-    },
-        peg$c76 = "+",
-        peg$c77 = { type: "literal", value: "+", description: "\"+\"" },
-        peg$c78 = "%",
-        peg$c79 = { type: "literal", value: "%", description: "\"%\"" },
-        peg$c80 = function peg$c80(n) {
-      return { view: null, multiplier: n / 100 };
-    },
-        peg$c81 = function peg$c81(n) {
-      return { view: null, multiplier: n / -100 };
-    },
-        peg$c82 = function peg$c82(vn, a, m, c) {
-      return { view: vn.view, attribute: a ? a : undefined, multiplier: m ? m : 1, constant: c ? c : undefined };
-    },
-        peg$c83 = ".left",
-        peg$c84 = { type: "literal", value: ".left", description: "\".left\"" },
-        peg$c85 = function peg$c85() {
-      return 'left';
-    },
-        peg$c86 = ".right",
-        peg$c87 = { type: "literal", value: ".right", description: "\".right\"" },
-        peg$c88 = function peg$c88() {
-      return 'right';
-    },
-        peg$c89 = ".top",
-        peg$c90 = { type: "literal", value: ".top", description: "\".top\"" },
-        peg$c91 = function peg$c91() {
-      return 'top';
-    },
-        peg$c92 = ".bottom",
-        peg$c93 = { type: "literal", value: ".bottom", description: "\".bottom\"" },
-        peg$c94 = function peg$c94() {
-      return 'bottom';
-    },
-        peg$c95 = ".width",
-        peg$c96 = { type: "literal", value: ".width", description: "\".width\"" },
-        peg$c97 = function peg$c97() {
-      return 'width';
-    },
-        peg$c98 = ".height",
-        peg$c99 = { type: "literal", value: ".height", description: "\".height\"" },
-        peg$c100 = function peg$c100() {
-      return 'height';
-    },
-        peg$c101 = ".centerX",
-        peg$c102 = { type: "literal", value: ".centerX", description: "\".centerX\"" },
-        peg$c103 = function peg$c103() {
-      return 'centerX';
-    },
-        peg$c104 = ".centerY",
-        peg$c105 = { type: "literal", value: ".centerY", description: "\".centerY\"" },
-        peg$c106 = function peg$c106() {
-      return 'centerY';
-    },
-        peg$c107 = "/",
-        peg$c108 = { type: "literal", value: "/", description: "\"/\"" },
-        peg$c109 = function peg$c109(n) {
-      return 1 / n;
-    },
-        peg$c110 = "/+",
-        peg$c111 = { type: "literal", value: "/+", description: "\"/+\"" },
-        peg$c112 = "/-",
-        peg$c113 = { type: "literal", value: "/-", description: "\"/-\"" },
-        peg$c114 = function peg$c114(n) {
-      return -1 / n;
-    },
-        peg$c115 = "*",
-        peg$c116 = { type: "literal", value: "*", description: "\"*\"" },
-        peg$c117 = function peg$c117(n) {
-      return n;
-    },
-        peg$c118 = "*+",
-        peg$c119 = { type: "literal", value: "*+", description: "\"*+\"" },
-        peg$c120 = "*-",
-        peg$c121 = { type: "literal", value: "*-", description: "\"*-\"" },
-        peg$c122 = function peg$c122(n) {
-      return -n;
-    },
-        peg$c123 = /^[a-zA-Z_]/,
-        peg$c124 = { type: "class", value: "[a-zA-Z_]", description: "[a-zA-Z_]" },
-        peg$c125 = /^[a-zA-Z0-9_]/,
-        peg$c126 = { type: "class", value: "[a-zA-Z0-9_]", description: "[a-zA-Z0-9_]" },
-        peg$c127 = function peg$c127(f, v, r) {
-      return { view: f + v, range: r, $parserOffset: offset() };
-    },
-        peg$c128 = function peg$c128(f, v) {
-      return { view: f + v, $parserOffset: offset() };
-    },
-        peg$c129 = "..",
-        peg$c130 = { type: "literal", value: "..", description: "\"..\"" },
-        peg$c131 = function peg$c131(d) {
-      return parseInt(d);
-    },
-        peg$c132 = ".",
-        peg$c133 = { type: "literal", value: ".", description: "\".\"" },
-        peg$c134 = function peg$c134(digits, decimals) {
-      return parseFloat(digits.concat(".").concat(decimals).join(""), 10);
-    },
-        peg$c135 = function peg$c135(digits) {
-      return parseInt(digits.join(""), 10);
-    },
-        peg$currPos = 0,
-        peg$reportedPos = 0,
-        peg$cachedPos = 0,
-        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
-        peg$maxFailPos = 0,
-        peg$maxFailExpected = [],
-        peg$silentFails = 0,
-        peg$result;
-
-    if ("startRule" in options) {
-      if (!(options.startRule in peg$startRuleFunctions)) {
-        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
-      }
-
-      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
-    }
-
-    function text() {
-      return input.substring(peg$reportedPos, peg$currPos);
-    }
-
-    function offset() {
-      return peg$reportedPos;
-    }
-
-    function line() {
-      return peg$computePosDetails(peg$reportedPos).line;
-    }
-
-    function column() {
-      return peg$computePosDetails(peg$reportedPos).column;
-    }
-
-    function expected(description) {
-      throw peg$buildException(null, [{ type: "other", description: description }], peg$reportedPos);
-    }
-
-    function error(message) {
-      throw peg$buildException(message, null, peg$reportedPos);
-    }
-
-    function peg$computePosDetails(pos) {
-      function advance(details, startPos, endPos) {
-        var p, ch;
-
-        for (p = startPos; p < endPos; p++) {
-          ch = input.charAt(p);
-          if (ch === "\n") {
-            if (!details.seenCR) {
-              details.line++;
-            }
-            details.column = 1;
-            details.seenCR = false;
-          } else if (ch === "\r" || ch === '\u2028' || ch === '\u2029') {
-            details.line++;
-            details.column = 1;
-            details.seenCR = true;
-          } else {
-            details.column++;
-            details.seenCR = false;
-          }
-        }
-      }
-
-      if (peg$cachedPos !== pos) {
-        if (peg$cachedPos > pos) {
-          peg$cachedPos = 0;
-          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
-        }
-        advance(peg$cachedPosDetails, peg$cachedPos, pos);
-        peg$cachedPos = pos;
-      }
-
-      return peg$cachedPosDetails;
-    }
-
-    function peg$fail(expected) {
-      if (peg$currPos < peg$maxFailPos) {
-        return;
-      }
-
-      if (peg$currPos > peg$maxFailPos) {
-        peg$maxFailPos = peg$currPos;
-        peg$maxFailExpected = [];
-      }
-
-      peg$maxFailExpected.push(expected);
-    }
-
-    function peg$buildException(message, expected, pos) {
-      function cleanupExpected(expected) {
-        var i = 1;
-
-        expected.sort(function (a, b) {
-          if (a.description < b.description) {
-            return -1;
-          } else if (a.description > b.description) {
-            return 1;
-          } else {
-            return 0;
-          }
-        });
-
-        while (i < expected.length) {
-          if (expected[i - 1] === expected[i]) {
-            expected.splice(i, 1);
-          } else {
-            i++;
-          }
-        }
-      }
-
-      function buildMessage(expected, found) {
-        function stringEscape(s) {
-          function hex(ch) {
-            return ch.charCodeAt(0).toString(16).toUpperCase();
-          }
-
-          return s.replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\x08/g, '\\b').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\f/g, '\\f').replace(/\r/g, '\\r').replace(/[\x00-\x07\x0B\x0E\x0F]/g, function (ch) {
-            return '\\x0' + hex(ch);
-          }).replace(/[\x10-\x1F\x80-\xFF]/g, function (ch) {
-            return '\\x' + hex(ch);
-          }).replace(/[\u0180-\u0FFF]/g, function (ch) {
-            return '\\u0' + hex(ch);
-          }).replace(/[\u1080-\uFFFF]/g, function (ch) {
-            return '\\u' + hex(ch);
-          });
-        }
-
-        var expectedDescs = new Array(expected.length),
-            expectedDesc,
-            foundDesc,
-            i;
-
-        for (i = 0; i < expected.length; i++) {
-          expectedDescs[i] = expected[i].description;
-        }
-
-        expectedDesc = expected.length > 1 ? expectedDescs.slice(0, -1).join(", ") + " or " + expectedDescs[expected.length - 1] : expectedDescs[0];
-
-        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
-
-        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
-      }
-
-      var posDetails = peg$computePosDetails(pos),
-          found = pos < input.length ? input.charAt(pos) : null;
-
-      if (expected !== null) {
-        cleanupExpected(expected);
-      }
-
-      return new SyntaxError(message !== null ? message : buildMessage(expected, found), expected, found, pos, posDetails.line, posDetails.column);
-    }
-
-    function peg$parsevisualFormatStringExt() {
-      var s0;
-
-      s0 = peg$parsevisualFormatString();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsevisualFormatStringConstraintExpression();
-      }
-
-      return s0;
-    }
-
-    function peg$parsevisualFormatStringConstraintExpression() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c1) {
-        s1 = peg$c1;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c2);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseviewName();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseattributePredicate();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$parseattributePredicate();
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$parseattributePredicate();
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$parsecomments();
-              if (s5 === peg$FAILED) {
-                s5 = peg$c4;
-              }
-              if (s5 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c5(s2, s3, s4, s5);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseattributePredicate() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = peg$parseattribute();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateListWithParens();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c6(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsevisualFormatString() {
-      var s0, s1, s2, s3, s4, s5, s6, s7;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = peg$parseorientation();
-      if (s2 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 58) {
-          s3 = peg$c7;
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c8);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s2 = [s2, s3];
-          s1 = s2;
-        } else {
-          peg$currPos = s1;
-          s1 = peg$c0;
-        }
-      } else {
-        peg$currPos = s1;
-        s1 = peg$c0;
-      }
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = peg$parsesuperview();
-        if (s3 !== peg$FAILED) {
-          s4 = peg$parseconnection();
-          if (s4 !== peg$FAILED) {
-            s3 = [s3, s4];
-            s2 = s3;
-          } else {
-            peg$currPos = s2;
-            s2 = peg$c0;
-          }
-        } else {
-          peg$currPos = s2;
-          s2 = peg$c0;
-        }
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseviewGroup();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$currPos;
-            s6 = peg$parseconnection();
-            if (s6 !== peg$FAILED) {
-              s7 = peg$parseviewGroup();
-              if (s7 !== peg$FAILED) {
-                s6 = [s6, s7];
-                s5 = s6;
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            } else {
-              peg$currPos = s5;
-              s5 = peg$c0;
-            }
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parseviewGroup();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parsesuperview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-              if (s5 === peg$FAILED) {
-                s5 = peg$c4;
-              }
-              if (s5 !== peg$FAILED) {
-                s6 = peg$parsecomments();
-                if (s6 === peg$FAILED) {
-                  s6 = peg$c4;
-                }
-                if (s6 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c9(s1, s2, s3, s4, s5, s6);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseorientation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c10) {
-        s1 = peg$c10;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c11);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c12();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 72) {
-          s1 = peg$c13;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c14);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c15();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 86) {
-            s1 = peg$c16;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c17);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c18();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 90) {
-              s1 = peg$c19;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c20);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c21();
-            }
-            s0 = s1;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsecomments() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (input.charCodeAt(peg$currPos) === 32) {
-        s2 = peg$c22;
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c23);
-        }
-      }
-      while (s2 !== peg$FAILED) {
-        s1.push(s2);
-        if (input.charCodeAt(peg$currPos) === 32) {
-          s2 = peg$c22;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c23);
-          }
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.substr(peg$currPos, 2) === peg$c24) {
-          s2 = peg$c24;
-          peg$currPos += 2;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c25);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (input.length > peg$currPos) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c26);
-            }
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            if (input.length > peg$currPos) {
-              s4 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c26);
-              }
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            s1 = [s1, s2, s3];
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsesuperview() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 124) {
-        s1 = peg$c27;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c28);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c29();
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseviewGroup() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 91) {
-        s1 = peg$c30;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c31);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseview();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parseview();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parseview();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 93) {
-              s4 = peg$c34;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c35);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c36(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseview() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      s1 = peg$parseviewNameRange();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateListWithParens();
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsecascadedViews();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c37(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsecascadedViews() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 58) {
-        s1 = peg$c7;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c8);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = [];
-        s3 = peg$currPos;
-        s4 = peg$parseconnection();
-        if (s4 !== peg$FAILED) {
-          s5 = peg$parseviewGroup();
-          if (s5 !== peg$FAILED) {
-            s4 = [s4, s5];
-            s3 = s4;
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-        } else {
-          peg$currPos = s3;
-          s3 = peg$c0;
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            s3 = peg$currPos;
-            s4 = peg$parseconnection();
-            if (s4 !== peg$FAILED) {
-              s5 = peg$parseviewGroup();
-              if (s5 !== peg$FAILED) {
-                s4 = [s4, s5];
-                s3 = s4;
-              } else {
-                peg$currPos = s3;
-                s3 = peg$c0;
-              }
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseconnection();
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c38(s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseconnection() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c39) {
-        s1 = peg$c39;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c40);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c41();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsepredicateList();
-          if (s2 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 45) {
-              s3 = peg$c42;
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c43);
-              }
-            }
-            if (s3 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c44(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 45) {
-            s1 = peg$c42;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c43);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c45();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 126) {
-              s1 = peg$c46;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c47);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              s2 = peg$parseequalSpacingPredicateList();
-              if (s2 !== peg$FAILED) {
-                if (input.charCodeAt(peg$currPos) === 126) {
-                  s3 = peg$c46;
-                  peg$currPos++;
-                } else {
-                  s3 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c47);
-                  }
-                }
-                if (s3 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c44(s2);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.charCodeAt(peg$currPos) === 126) {
-                s1 = peg$c46;
-                peg$currPos++;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c47);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c48();
-              }
-              s0 = s1;
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                s1 = peg$c49;
-                if (s1 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c50();
-                }
-                s0 = s1;
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateList() {
-      var s0;
-
-      s0 = peg$parsesimplePredicate();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsepredicateListWithParens();
-      }
-
-      return s0;
-    }
-
-    function peg$parsesimplePredicate() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsepercentage();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c51(s1);
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = peg$parsenumber();
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c52(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateListWithParens() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c53;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c54);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parsepredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parsepredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c55;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c56);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c57(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c58;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c59);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c60(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseequalSpacingPredicateList() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c53;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c54);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseequalSpacingPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parseequalSpacingPredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parseequalSpacingPredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c55;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c56);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c57(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseequalSpacingPredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c58;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c59);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c61(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserelation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c62) {
-        s1 = peg$c62;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c63);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c64();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c65) {
-          s1 = peg$c65;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c66);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c67();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c68) {
-            s1 = peg$c68;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c69);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c70();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseobjectOfPredicate() {
-      var s0;
-
-      s0 = peg$parsepercentage();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parseconstant();
-        if (s0 === peg$FAILED) {
-          s0 = peg$parseviewPredicate();
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepriority() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c71.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c72);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c73(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseconstant() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c74(s1);
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c75(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 43) {
-            s1 = peg$c76;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c77);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c74(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepercentage() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 37) {
-          s2 = peg$c78;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c79);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c80(s1);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 37) {
-              s3 = peg$c78;
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c79);
-              }
-            }
-            if (s3 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c81(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 43) {
-            s1 = peg$c76;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c77);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              if (input.charCodeAt(peg$currPos) === 37) {
-                s3 = peg$c78;
-                peg$currPos++;
-              } else {
-                s3 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c79);
-                }
-              }
-              if (s3 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c80(s2);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewPredicate() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$parseviewName();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseattribute();
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsemultiplier();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            s4 = peg$parseconstantExpr();
-            if (s4 === peg$FAILED) {
-              s4 = peg$c4;
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c82(s1, s2, s3, s4);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseattribute() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 5) === peg$c83) {
-        s1 = peg$c83;
-        peg$currPos += 5;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c84);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c85();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 6) === peg$c86) {
-          s1 = peg$c86;
-          peg$currPos += 6;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c87);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c88();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 4) === peg$c89) {
-            s1 = peg$c89;
-            peg$currPos += 4;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c90);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c91();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.substr(peg$currPos, 7) === peg$c92) {
-              s1 = peg$c92;
-              peg$currPos += 7;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c93);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c94();
-            }
-            s0 = s1;
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.substr(peg$currPos, 6) === peg$c95) {
-                s1 = peg$c95;
-                peg$currPos += 6;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c96);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c97();
-              }
-              s0 = s1;
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                if (input.substr(peg$currPos, 7) === peg$c98) {
-                  s1 = peg$c98;
-                  peg$currPos += 7;
-                } else {
-                  s1 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c99);
-                  }
-                }
-                if (s1 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c100();
-                }
-                s0 = s1;
-                if (s0 === peg$FAILED) {
-                  s0 = peg$currPos;
-                  if (input.substr(peg$currPos, 8) === peg$c101) {
-                    s1 = peg$c101;
-                    peg$currPos += 8;
-                  } else {
-                    s1 = peg$FAILED;
-                    if (peg$silentFails === 0) {
-                      peg$fail(peg$c102);
-                    }
-                  }
-                  if (s1 !== peg$FAILED) {
-                    peg$reportedPos = s0;
-                    s1 = peg$c103();
-                  }
-                  s0 = s1;
-                  if (s0 === peg$FAILED) {
-                    s0 = peg$currPos;
-                    if (input.substr(peg$currPos, 8) === peg$c104) {
-                      s1 = peg$c104;
-                      peg$currPos += 8;
-                    } else {
-                      s1 = peg$FAILED;
-                      if (peg$silentFails === 0) {
-                        peg$fail(peg$c105);
-                      }
-                    }
-                    if (s1 !== peg$FAILED) {
-                      peg$reportedPos = s0;
-                      s1 = peg$c106();
-                    }
-                    s0 = s1;
-                  }
-                }
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsemultiplier() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 47) {
-        s1 = peg$c107;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c108);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsenumber();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c109(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c110) {
-          s1 = peg$c110;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c111);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c109(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c112) {
-            s1 = peg$c112;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c113);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c114(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 42) {
-              s1 = peg$c115;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c116);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              s2 = peg$parsenumber();
-              if (s2 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c117(s2);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.substr(peg$currPos, 2) === peg$c118) {
-                s1 = peg$c118;
-                peg$currPos += 2;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c119);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                s2 = peg$parsenumber();
-                if (s2 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c117(s2);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                if (input.substr(peg$currPos, 2) === peg$c120) {
-                  s1 = peg$c120;
-                  peg$currPos += 2;
-                } else {
-                  s1 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c121);
-                  }
-                }
-                if (s1 !== peg$FAILED) {
-                  s2 = peg$parsenumber();
-                  if (s2 !== peg$FAILED) {
-                    peg$reportedPos = s0;
-                    s1 = peg$c122(s2);
-                    s0 = s1;
-                  } else {
-                    peg$currPos = s0;
-                    s0 = peg$c0;
-                  }
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseconstantExpr() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 45) {
-        s1 = peg$c42;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c43);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsenumber();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c122(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 43) {
-          s1 = peg$c76;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c77);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c117(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewNameRange() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c123.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c124);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c123.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c124);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c125.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c126);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parserange();
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c127(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = peg$currPos;
-        s2 = [];
-        if (peg$c123.test(input.charAt(peg$currPos))) {
-          s3 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c124);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            if (peg$c123.test(input.charAt(peg$currPos))) {
-              s3 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c124);
-              }
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          s2 = input.substring(s1, peg$currPos);
-        }
-        s1 = s2;
-        if (s1 !== peg$FAILED) {
-          s2 = peg$currPos;
-          s3 = [];
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            if (peg$c125.test(input.charAt(peg$currPos))) {
-              s4 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c126);
-              }
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            s3 = input.substring(s2, peg$currPos);
-          }
-          s2 = s3;
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c128(s1, s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewName() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c123.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c124);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c123.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c124);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c125.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c126);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c128(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserange() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c129) {
-        s1 = peg$c129;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c130);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = [];
-        if (peg$c71.test(input.charAt(peg$currPos))) {
-          s3 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c72);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            if (peg$c71.test(input.charAt(peg$currPos))) {
-              s3 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c72);
-              }
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c131(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsenumber() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c71.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c72);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 46) {
-          s2 = peg$c132;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c133);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            while (s4 !== peg$FAILED) {
-              s3.push(s4);
-              if (peg$c71.test(input.charAt(peg$currPos))) {
-                s4 = input.charAt(peg$currPos);
-                peg$currPos++;
-              } else {
-                s4 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c72);
-                }
-              }
-            }
-          } else {
-            s3 = peg$c0;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c134(s1, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = [];
-        if (peg$c71.test(input.charAt(peg$currPos))) {
-          s2 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c72);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          while (s2 !== peg$FAILED) {
-            s1.push(s2);
-            if (peg$c71.test(input.charAt(peg$currPos))) {
-              s2 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s2 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c72);
-              }
-            }
-          }
-        } else {
-          s1 = peg$c0;
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c135(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function extend(dst) {
-      for (var i = 1; i < arguments.length; i++) {
-        for (var k in arguments[i]) {
-          dst[k] = arguments[i][k];
-        }
-      }
-      return dst;
-    }
-
-    peg$result = peg$startRuleFunction();
-
-    if (peg$result !== peg$FAILED && peg$currPos === input.length) {
-      return peg$result;
-    } else {
-      if (peg$result !== peg$FAILED && peg$currPos < input.length) {
-        peg$fail({ type: "end", description: "end of input" });
-      }
-
-      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
-    }
-  }
-
-  return {
-    SyntaxError: SyntaxError,
-    parse: parse
-  };
-}();
-
-var Orientation = {
-  HORIZONTAL: 1,
-  VERTICAL: 2,
-  ZINDEX: 4
-};
-
-/**
- * Helper function that inserts equal spacers (~).
- * @private
- */
-function _processEqualSpacer(context, stackView) {
-
-  // Determine unique name for the spacer
-  context.equalSpacerIndex = context.equalSpacerIndex || 1;
-  var name = '_~' + context.lineIndex + ':' + context.equalSpacerIndex + '~';
-  if (context.equalSpacerIndex > 1) {
-
-    // Ensure that all spacers have the same width/height
-    context.constraints.push({
-      view1: '_~' + context.lineIndex + ':1~',
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: context.relation.relation || Relation.EQU,
-      view2: name,
-      attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      priority: context.relation.priority
-    });
-  }
-  context.equalSpacerIndex++;
-
-  // Enforce view/proportional width/height
-  if (context.relation.view || context.relation.multiplier && context.relation.multiplier !== 1) {
-    context.constraints.push({
-      view1: name,
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: context.relation.relation || Relation.EQU,
-      view2: context.relation.view,
-      attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      priority: context.relation.priority,
-      multiplier: context.relation.multiplier
-    });
-    context.relation.multiplier = undefined;
-  } else if (context.relation.constant) {
-    context.constraints.push({
-      view1: name,
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: Relation.EQU,
-      view2: null,
-      attr2: Attribute.CONST,
-      priority: context.relation.priority,
-      constant: context.relation.constant
-    });
-    context.relation.constant = undefined;
-  }
-
-  // Add constraint
-  for (var i = 0; i < context.prevViews.length; i++) {
-    var prevView = context.prevViews[i];
-    switch (context.orientation) {
-      case Orientation.HORIZONTAL:
-        context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-        context.curAttr = Attribute.LEFT;
-        break;
-      case Orientation.VERTICAL:
-        context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-        context.curAttr = Attribute.TOP;
-        break;
-      case Orientation.ZINDEX:
-        context.prevAttr = Attribute.ZINDEX;
-        context.curAttr = Attribute.ZINDEX;
-        context.relation.constant = prevView !== stackView ? 'default' : 0;
-        break;
-    }
-    context.constraints.push({
-      view1: prevView,
-      attr1: context.prevAttr,
-      relation: context.relation.relation,
-      view2: name,
-      attr2: context.curAttr,
-      priority: context.relation.priority
-    });
-  }
-  context.prevViews = [name];
-}
-
-/**
- * Helper function that inserts proportional spacers (-12%-).
- * @private
- */
-function _processProportionalSpacer(context, stackView) {
-  context.proportionalSpacerIndex = context.proportionalSpacerIndex || 1;
-  var name = '_-' + context.lineIndex + ':' + context.proportionalSpacerIndex + '-';
-  context.proportionalSpacerIndex++;
-  context.constraints.push({
-    view1: name,
-    attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-    relation: context.relation.relation || Relation.EQU,
-    view2: context.relation.view, // or relative to the stackView... food for thought
-    attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-    priority: context.relation.priority,
-    multiplier: context.relation.multiplier
-  });
-  context.relation.multiplier = undefined;
-
-  // Add constraint
-  for (var i = 0; i < context.prevViews.length; i++) {
-    var prevView = context.prevViews[i];
-    switch (context.orientation) {
-      case Orientation.HORIZONTAL:
-        context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-        context.curAttr = Attribute.LEFT;
-        break;
-      case Orientation.VERTICAL:
-        context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-        context.curAttr = Attribute.TOP;
-        break;
-      case Orientation.ZINDEX:
-        context.prevAttr = Attribute.ZINDEX;
-        context.curAttr = Attribute.ZINDEX;
-        context.relation.constant = prevView !== stackView ? 'default' : 0;
-        break;
-    }
-    context.constraints.push({
-      view1: prevView,
-      attr1: context.prevAttr,
-      relation: context.relation.relation,
-      view2: name,
-      attr2: context.curAttr,
-      priority: context.relation.priority
-    });
-  }
-  context.prevViews = [name];
-}
-
-/**
- * In case of a stack-view, set constraints for opposite orientations
- * @private
- */
-function _processStackView(context, name, subView) {
-  var viewName = void 0;
-  for (var orientation = 1; orientation <= 4; orientation *= 2) {
-    if (subView.orientations & orientation && subView.stack.orientation !== orientation && !(subView.stack.processedOrientations & orientation)) {
-      subView.stack.processedOrientations = subView.stack.processedOrientations | orientation;
-      viewName = viewName || {
-        name: name,
-        type: 'stack'
-      };
-      for (var i = 0, j = subView.stack.subViews.length; i < j; i++) {
-        if (orientation === Orientation.ZINDEX) {
-          context.constraints.push({
-            view1: viewName,
-            attr1: Attribute.ZINDEX,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: Attribute.ZINDEX
-          });
-        } else {
-          context.constraints.push({
-            view1: viewName,
-            attr1: orientation === Orientation.VERTICAL ? Attribute.HEIGHT : Attribute.WIDTH,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: orientation === Orientation.VERTICAL ? Attribute.HEIGHT : Attribute.WIDTH
-          });
-          context.constraints.push({
-            view1: viewName,
-            attr1: orientation === Orientation.VERTICAL ? Attribute.TOP : Attribute.LEFT,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: orientation === Orientation.VERTICAL ? Attribute.TOP : Attribute.LEFT
-          });
-        }
-      }
-    }
-  }
-}
-
-/**
- * Recursive helper function converts a view-name and a range to a series
- * of view-names (e.g. [child1, child2, child3, ...]).
- * @private
- */
-function _getRange(name, range) {
-  if (range === true) {
-    range = name.match(/\.\.\d+$/);
-    if (range) {
-      name = name.substring(0, name.length - range[0].length);
-      range = parseInt(range[0].substring(2));
-    }
-  }
-  if (!range) {
-    return [name];
-  }
-  var start = name.match(/\d+$/);
-  var res = [];
-  var i;
-  if (start) {
-    name = name.substring(0, name.length - start[0].length);
-    for (i = parseInt(start); i <= range; i++) {
-      res.push(name + i);
-    }
-  } else {
-    res.push(name);
-    for (i = 2; i <= range; i++) {
-      res.push(name + i);
-    }
-  }
-  return res;
-}
-
-/**
- * Recursive helper function that processes the cascaded data.
- * @private
- */
-function _processCascade(context, cascade, parentItem) {
-  var stackView = parentItem ? parentItem.view : null;
-  var subViews = [];
-  var curViews = [];
-  var subView = void 0;
-  if (stackView) {
-    cascade.push({ view: stackView });
-    curViews.push(stackView);
-  }
-  for (var i = 0; i < cascade.length; i++) {
-    var item = cascade[i];
-    if (!Array.isArray(item) && item.hasOwnProperty('view') || Array.isArray(item) && item[0].view && !item[0].relation) {
-      var items = Array.isArray(item) ? item : [item];
-      for (var z = 0; z < items.length; z++) {
-        item = items[z];
-        var viewRange = item === ',' ? [] : item.view ? _getRange(item.view, item.range) : [null];
-        for (var r = 0; r < viewRange.length; r++) {
-          var curView = viewRange[r];
-          curViews.push(curView);
-
-          //
-          // Add this view to the collection of subViews
-          //
-          if (curView !== stackView) {
-            subViews.push(curView);
-            subView = context.subViews[curView];
-            if (!subView) {
-              subView = { orientations: 0 };
-              context.subViews[curView] = subView;
-            }
-            subView.orientations = subView.orientations | context.orientation;
-            if (subView.stack) {
-              _processStackView(context, curView, subView);
-            }
-          }
-
-          //
-          // Process the relationship between this and the previous views
-          //
-          if (context.prevViews !== undefined && curView !== undefined && context.relation) {
-            if (context.relation.relation !== 'none') {
-              for (var p = 0; p < context.prevViews.length; p++) {
-                var prevView = context.prevViews[p];
-                switch (context.orientation) {
-                  case Orientation.HORIZONTAL:
-                    context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-                    context.curAttr = curView !== stackView ? Attribute.LEFT : Attribute.RIGHT;
-                    break;
-                  case Orientation.VERTICAL:
-                    context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-                    context.curAttr = curView !== stackView ? Attribute.TOP : Attribute.BOTTOM;
-                    break;
-                  case Orientation.ZINDEX:
-                    context.prevAttr = Attribute.ZINDEX;
-                    context.curAttr = Attribute.ZINDEX;
-                    context.relation.constant = !prevView ? 0 : context.relation.constant || 'default';
-                    break;
-                }
-                context.constraints.push({
-                  view1: prevView,
-                  attr1: context.prevAttr,
-                  relation: context.relation.relation,
-                  view2: curView,
-                  attr2: context.curAttr,
-                  multiplier: context.relation.multiplier,
-                  constant: context.relation.constant === 'default' || !context.relation.constant ? context.relation.constant : -context.relation.constant,
-                  priority: context.relation.priority
-                });
-              }
-            }
-          }
-
-          //
-          // Process view size constraints
-          //
-          var constraints = item.constraints;
-          if (constraints) {
-            for (var n = 0; n < constraints.length; n++) {
-              context.prevAttr = context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT;
-              context.curAttr = constraints[n].view || constraints[n].multiplier ? constraints[n].attribute || context.prevAttr : constraints[n].variable ? Attribute.VARIABLE : Attribute.CONST;
-              context.constraints.push({
-                view1: curView,
-                attr1: context.prevAttr,
-                relation: constraints[n].relation,
-                view2: constraints[n].view,
-                attr2: context.curAttr,
-                multiplier: constraints[n].multiplier,
-                constant: constraints[n].constant,
-                priority: constraints[n].priority
-              });
-            }
-          }
-
-          //
-          // Process cascaded data (child stack-views)
-          //
-          if (item.cascade) {
-            _processCascade(context, item.cascade, item);
-          }
-        }
-      }
-    } else if (item !== ',') {
-      context.prevViews = curViews;
-      curViews = [];
-      context.relation = item[0];
-      if (context.prevViews !== undefined) {
-        if (context.relation.equalSpacing) {
-          _processEqualSpacer(context, stackView);
-        }
-        if (context.relation.multiplier) {
-          _processProportionalSpacer(context, stackView);
-        }
-      }
-    }
-  }
-
-  if (stackView) {
-    subView = context.subViews[stackView];
-    if (!subView) {
-      subView = { orientations: context.orientation };
-      context.subViews[stackView] = subView;
-    } else if (subView.stack) {
-      var err = new Error('A stack named "' + stackView + '" has already been created');
-      err.column = parentItem.$parserOffset + 1;
-      throw err;
-    }
-    subView.stack = {
-      orientation: context.orientation,
-      processedOrientations: context.orientation,
-      subViews: subViews
-    };
-    _processStackView(context, stackView, subView);
-  }
-}
-
-var metaInfoCategories = ['viewport', 'spacing', 'colors', 'shapes', 'widths', 'heights'];
-
-/**
- * VisualFormat
- *
- * @namespace VisualFormat
- */
-
-var VisualFormat = function () {
-  function VisualFormat() {
-    _classCallCheck(this, VisualFormat);
-  }
-
-  _createClass(VisualFormat, null, [{
-    key: 'parseLine',
-
-
-    /**
-     * Parses a single line of vfl into an array of constraint definitions.
-     *
-     * When the visual-format could not be succesfully parsed an exception is thrown containing
-     * additional info about the parse error and column position.
-     *
-     * @param {String} visualFormat Visual format string (cannot contain line-endings!).
-     * @param {Object} [options] Configuration options.
-     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).
-     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).
-     * @param {Number} [options.lineIndex] Line-index used when auto generating equal-spacing constraints.
-     * @return {Array} Array of constraint definitions.
-     */
-    value: function parseLine(visualFormat, options) {
-      if (visualFormat.length === 0 || options && options.extended && visualFormat.indexOf('//') === 0) {
-        return [];
-      }
-      var res = options && options.extended ? parserExt.parse(visualFormat) : parser.parse(visualFormat);
-      if (options && options.outFormat === 'raw') {
-        return [res];
-      }
-      var context = {
-        constraints: [],
-        lineIndex: (options ? options.lineIndex : undefined) || 1,
-        subViews: (options ? options.subViews : undefined) || {}
-      };
-      if (res.type === 'attribute') {
-        for (var n = 0; n < res.attributes.length; n++) {
-          var attr = res.attributes[n];
-          for (var m = 0; m < attr.predicates.length; m++) {
-            var predicate = attr.predicates[m];
-            context.constraints.push({
-              view1: res.view,
-              attr1: attr.attr,
-              relation: predicate.relation,
-              view2: predicate.view,
-              attr2: predicate.attribute || attr.attr,
-              multiplier: predicate.multiplier,
-              constant: predicate.constant,
-              priority: predicate.priority
-            });
-          }
-        }
-      } else {
-        switch (res.orientation) {
-          case 'horizontal':
-            context.orientation = Orientation.HORIZONTAL;
-            context.horizontal = true;
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'vertical':
-            context.orientation = Orientation.VERTICAL;
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'horzvert':
-            context.orientation = Orientation.HORIZONTAL;
-            context.horizontal = true;
-            _processCascade(context, res.cascade, null);
-            context = {
-              constraints: context.constraints,
-              lineIndex: context.lineIndex,
-              subViews: context.subViews,
-              orientation: Orientation.VERTICAL
-            };
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'zIndex':
-            context.orientation = Orientation.ZINDEX;
-            _processCascade(context, res.cascade, null);
-            break;
-        }
-      }
-      return context.constraints;
-    }
-
-    /**
-     * Parses one or more visual format strings into an array of constraint definitions.
-     *
-     * When the visual-format could not be succesfully parsed an exception is thrown containing
-     * additional info about the parse error and column position.
-     *
-     * @param {String|Array} visualFormat One or more visual format strings.
-     * @param {Object} [options] Configuration options.
-     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).
-     * @param {Boolean} [options.strict] When set to false trims any leading/trailing spaces and ignores empty lines (default: true).
-     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\n`).
-     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).
-     * @return {Array} Array of constraint definitions.
-     */
-
-  }, {
-    key: 'parse',
-    value: function parse(visualFormat, options) {
-      var lineSeparator = options && options.lineSeparator ? options.lineSeparator : '\n';
-      if (!Array.isArray(visualFormat) && visualFormat.indexOf(lineSeparator) < 0) {
-        try {
-          return this.parseLine(visualFormat, options);
-        } catch (err) {
-          err.source = visualFormat;
-          throw err;
-        }
-      }
-
-      // Decompose visual-format into an array of strings, and within those strings
-      // search for line-endings, and treat each line as a seperate visual-format.
-      visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];
-      var lines = void 0;
-      var constraints = [];
-      var lineIndex = 0;
-      var line = void 0;
-      var parseOptions = {
-        lineIndex: lineIndex,
-        extended: options && options.extended,
-        strict: options && options.strict !== undefined ? options.strict : true,
-        outFormat: options ? options.outFormat : undefined,
-        subViews: {}
-      };
-      try {
-        for (var i = 0; i < visualFormat.length; i++) {
-          lines = visualFormat[i].split(lineSeparator);
-          for (var j = 0; j < lines.length; j++) {
-            line = lines[j];
-            lineIndex++;
-            parseOptions.lineIndex = lineIndex;
-            if (!parseOptions.strict) {
-              line = line.trim();
-            }
-            if (parseOptions.strict || line.length) {
-              constraints = constraints.concat(this.parseLine(line, parseOptions));
-            }
-          }
-        }
-      } catch (err) {
-        err.source = line;
-        err.line = lineIndex;
-        throw err;
-      }
-      return constraints;
-    }
-
-    /**
-     * Parses meta information from the comments in the VFL.
-     *
-     * Additional meta information can be specified in the comments
-     * for previewing and rendering purposes. For instance, the view-port
-     * aspect-ratio, sub-view widths and colors, can be specified. The
-     * following example renders three colored circles in the visual-format editor:
-     *
-     * ```vfl
-     * //viewport aspect-ratio:3/1 max-height:300
-     * //colors red:#FF0000 green:#00FF00 blue:#0000FF
-     * //shapes red:circle green:circle blue:circle
-     * H:|-[row:[red(green,blue)]-[green]-[blue]]-|
-     * V:|[row]|
-     * ```
-     *
-     * Supported categories and properties:
-     *
-     * |Category|Property|Example|
-     * |--------|--------|-------|
-     * |`viewport`|`aspect-ratio:{width}/{height}`|`//viewport aspect-ratio:16/9`|
-     * ||`width:[{number}/intrinsic]`|`//viewport width:10`|
-     * ||`height:[{number}/intrinsic]`|`//viewport height:intrinsic`|
-     * ||`min-width:{number}`|
-     * ||`max-width:{number}`|
-     * ||`min-height:{number}`|
-     * ||`max-height:{number}`|
-     * |`spacing`|`[{number}/array]`|`//spacing:8` or `//spacing:[10, 20, 5]`|
-     * |`widths`|`{view-name}:[{number}/intrinsic]`|`//widths subview1:100`|
-     * |`heights`|`{view-name}:[{number}/intrinsic]`|`//heights subview1:intrinsic`|
-     * |`colors`|`{view-name}:{color}`|`//colors redview:#FF0000 blueview:#00FF00`|
-     * |`shapes`|`{view-name}:[circle/square]`|`//shapes avatar:circle`|
-     *
-     * @param {String|Array} visualFormat One or more visual format strings.
-     * @param {Object} [options] Configuration options.
-     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\n`).
-     * @param {String} [options.prefix] When specified, also processes the categories using that prefix (e.g. "-dev-viewport max-height:10").
-     * @return {Object} meta-info
-     */
-
-  }, {
-    key: 'parseMetaInfo',
-    value: function parseMetaInfo(visualFormat, options) {
-      var lineSeparator = options && options.lineSeparator ? options.lineSeparator : '\n';
-      var prefix = options ? options.prefix : undefined;
-      visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];
-      var metaInfo = {};
-      var key;
-      for (var k = 0; k < visualFormat.length; k++) {
-        var lines = visualFormat[k].split(lineSeparator);
-        for (var i = 0; i < lines.length; i++) {
-          var line = lines[i];
-          for (var c = 0; c < metaInfoCategories.length; c++) {
-            for (var s = 0; s < (prefix ? 2 : 1); s++) {
-              var category = metaInfoCategories[c];
-              var prefixedCategory = (s === 0 ? '' : prefix) + category;
-              if (line.indexOf('//' + prefixedCategory + ' ') === 0) {
-                var items = line.substring(3 + prefixedCategory.length).split(' ');
-                for (var j = 0; j < items.length; j++) {
-                  metaInfo[category] = metaInfo[category] || {};
-                  var item = items[j].split(':');
-                  var names = _getRange(item[0], true);
-                  for (var r = 0; r < names.length; r++) {
-                    metaInfo[category][names[r]] = item.length > 1 ? item[1] : '';
-                  }
-                }
-              } else if (line.indexOf('//' + prefixedCategory + ':') === 0) {
-                metaInfo[category] = line.substring(3 + prefixedCategory.length);
-              }
-            }
-          }
-        }
-      }
-      if (metaInfo.viewport) {
-        var viewport = metaInfo.viewport;
-        var aspectRatio = viewport['aspect-ratio'];
-        if (aspectRatio) {
-          aspectRatio = aspectRatio.split('/');
-          viewport['aspect-ratio'] = parseInt(aspectRatio[0]) / parseInt(aspectRatio[1]);
-        }
-        if (viewport.height !== undefined) {
-          viewport.height = viewport.height === 'intrinsic' ? true : parseInt(viewport.height);
-        }
-        if (viewport.width !== undefined) {
-          viewport.width = viewport.width === 'intrinsic' ? true : parseInt(viewport.width);
-        }
-        if (viewport['max-height'] !== undefined) {
-          viewport['max-height'] = parseInt(viewport['max-height']);
-        }
-        if (viewport['max-width'] !== undefined) {
-          viewport['max-width'] = parseInt(viewport['max-width']);
-        }
-        if (viewport['min-height'] !== undefined) {
-          viewport['min-height'] = parseInt(viewport['min-height']);
-        }
-        if (viewport['min-width'] !== undefined) {
-          viewport['min-width'] = parseInt(viewport['min-width']);
-        }
-      }
-      if (metaInfo.widths) {
-        for (key in metaInfo.widths) {
-          var width = metaInfo.widths[key] === 'intrinsic' ? true : parseInt(metaInfo.widths[key]);
-          metaInfo.widths[key] = width;
-          if (width === undefined || isNaN(width)) {
-            delete metaInfo.widths[key];
-          }
-        }
-      }
-      if (metaInfo.heights) {
-        for (key in metaInfo.heights) {
-          var height = metaInfo.heights[key] === 'intrinsic' ? true : parseInt(metaInfo.heights[key]);
-          metaInfo.heights[key] = height;
-          if (height === undefined || isNaN(height)) {
-            delete metaInfo.heights[key];
-          }
-        }
-      }
-      if (metaInfo.spacing) {
-        var value = JSON.parse(metaInfo.spacing);
-        metaInfo.spacing = value;
-        if (Array.isArray(value)) {
-          for (var sIdx = 0, len = value.length; sIdx < len; sIdx++) {
-            if (isNaN(value[sIdx])) {
-              delete metaInfo.spacing;
-              break;
-            }
-          }
-        } else if (value === undefined || isNaN(value)) {
-          delete metaInfo.spacing;
-        }
-      }
-      return metaInfo;
-    }
-  }]);
-
-  return VisualFormat;
-}();
-
-/**
- * A SubView is automatically generated when constraints are added to a View.
- *
- * @namespace SubView
- */
-
-
-var SubView = function () {
-  function SubView(options) {
-    _classCallCheck(this, SubView);
-
-    this._name = options.name;
-    this._type = options.type;
-    this._solver = options.solver;
-    this._attr = {};
-    if (!options.name) {
-      if (true) {
-        this._attr[Attribute.LEFT] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.LEFT], c.Strength.required));
-        this._attr[Attribute.TOP] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.TOP], c.Strength.required));
-        this._attr[Attribute.ZINDEX] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.ZINDEX], c.Strength.required));
-      } else {
-        this._attr[Attribute.LEFT] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.LEFT], kiwi.Operator.Eq, 0));
-        this._attr[Attribute.TOP] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.TOP], kiwi.Operator.Eq, 0));
-        this._attr[Attribute.ZINDEX] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.ZINDEX], kiwi.Operator.Eq, 0));
-      }
-    }
-  }
-
-  _createClass(SubView, [{
-    key: 'toJSON',
-    value: function toJSON() {
-      return {
-        name: this.name,
-        left: this.left,
-        top: this.top,
-        width: this.width,
-        height: this.height
-      };
-    }
-  }, {
-    key: 'toString',
-    value: function toString() {
-      JSON.stringify(this.toJSON(), undefined, 2);
-    }
-
-    /**
-     * Name of the sub-view.
-     * @readonly
-     * @type {String}
-     */
-
-  }, {
-    key: 'getValue',
-
-
-    /**
-     * Gets the value of one of the attributes.
-     *
-     * @param {String|Attribute} attr Attribute name (e.g. 'right', 'centerY', Attribute.TOP).
-     * @return {Number} value or `undefined`
-     */
-    value: function getValue(attr) {
-      return this._attr[attr] ? this._attr[attr].value() : undefined;
-    }
-
-    /**
-     * @private
-     */
-
-  }, {
-    key: '_getAttr',
-    value: function _getAttr(attr) {
-      if (this._attr[attr]) {
-        return this._attr[attr];
-      }
-      this._attr[attr] = true ? new c.Variable() : new kiwi.Variable();
-      switch (attr) {
-        case Attribute.RIGHT:
-          this._getAttr(Attribute.LEFT);
-          this._getAttr(Attribute.WIDTH);
-          if (true) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], this._attr[Attribute.WIDTH])));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH])));
-          }
-          break;
-        case Attribute.BOTTOM:
-          this._getAttr(Attribute.TOP);
-          this._getAttr(Attribute.HEIGHT);
-          if (true) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], this._attr[Attribute.HEIGHT])));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT])));
-          }
-          break;
-        case Attribute.CENTERX:
-          this._getAttr(Attribute.LEFT);
-          this._getAttr(Attribute.WIDTH);
-          if (true) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], c.divide(this._attr[Attribute.WIDTH], 2))));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH].divide(2))));
-          }
-          break;
-        case Attribute.CENTERY:
-          this._getAttr(Attribute.TOP);
-          this._getAttr(Attribute.HEIGHT);
-          if (true) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], c.divide(this._attr[Attribute.HEIGHT], 2))));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT].divide(2))));
-          }
-          break;
-      }
-      if (!true) {
-        this._solver.updateVariables();
-      }
-      return this._attr[attr];
-    }
-
-    /**
-     * @private
-     */
-
-  }, {
-    key: '_getAttrValue',
-    value: function _getAttrValue(attr) {
-      if (true) {
-        return this._getAttr(attr).value;
-      } else {
-        return this._getAttr(attr).value();
-      }
-    }
-  }, {
-    key: 'name',
-    get: function get() {
-      return this._name;
-    }
-
-    /**
-     * Left value (`Attribute.LEFT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'left',
-    get: function get() {
-      return this._getAttrValue(Attribute.LEFT);
-    }
-
-    /**
-     * Right value (`Attribute.RIGHT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'right',
-    get: function get() {
-      return this._getAttrValue(Attribute.RIGHT);
-    }
-
-    /**
-     * Width value (`Attribute.WIDTH`).
-     * @type {Number}
-     */
-
-  }, {
-    key: 'width',
-    get: function get() {
-      return this._getAttrValue(Attribute.WIDTH);
-    }
-
-    /**
-     * Height value (`Attribute.HEIGHT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'height',
-    get: function get() {
-      return this._getAttrValue(Attribute.HEIGHT);
-    }
-
-    /**
-     * Intrinsic width of the sub-view.
-     *
-     * Use this property to explicitely set the width of the sub-view, e.g.:
-     * ```javascript
-     * var view = new AutoLayout.View(AutoLayout.VisualFormat.parse('|[child1][child2]|'), {
-     *   width: 500
-     * });
-     * view.subViews.child1.intrinsicWidth = 100;
-     * console.log('child2 width: ' + view.subViews.child2.width); // 400
-     * ```
-     *
-     * @type {Number}
-     */
-
-  }, {
-    key: 'intrinsicWidth',
-    get: function get() {
-      return this._intrinsicWidth;
-    },
-    set: function set(value) {
-      if (value !== undefined && value !== this._intrinsicWidth) {
-        var attr = this._getAttr(Attribute.WIDTH);
-        if (this._intrinsicWidth === undefined) {
-          if (true) {
-            this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-          } else {
-            this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-          }
-        }
-        this._intrinsicWidth = value;
-        this._solver.suggestValue(attr, value);
-        if (true) {
-          this._solver.resolve();
-        } else {
-          this._solver.updateVariables();
-        }
-      }
-    }
-
-    /**
-     * Intrinsic height of the sub-view.
-     *
-     * See `intrinsicWidth`.
-     *
-     * @type {Number}
-     */
-
-  }, {
-    key: 'intrinsicHeight',
-    get: function get() {
-      return this._intrinsicHeight;
-    },
-    set: function set(value) {
-      if (value !== undefined && value !== this._intrinsicHeight) {
-        var attr = this._getAttr(Attribute.HEIGHT);
-        if (this._intrinsicHeight === undefined) {
-          if (true) {
-            this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-          } else {
-            this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-          }
-        }
-        this._intrinsicHeight = value;
-        this._solver.suggestValue(attr, value);
-        if (true) {
-          this._solver.resolve();
-        } else {
-          this._solver.updateVariables();
-        }
-      }
-    }
-
-    /**
-     * Top value (`Attribute.TOP`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'top',
-    get: function get() {
-      return this._getAttrValue(Attribute.TOP);
-    }
-
-    /**
-     * Bottom value (`Attribute.BOTTOM`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'bottom',
-    get: function get() {
-      return this._getAttrValue(Attribute.BOTTOM);
-    }
-
-    /**
-     * Horizontal center (`Attribute.CENTERX`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'centerX',
-    get: function get() {
-      return this._getAttrValue(Attribute.CENTERX);
-    }
-
-    /**
-     * Vertical center (`Attribute.CENTERY`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'centerY',
-    get: function get() {
-      return this._getAttrValue(Attribute.CENTERY);
-    }
-
-    /**
-     * Z-index (`Attribute.ZINDEX`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'zIndex',
-    get: function get() {
-      return this._getAttrValue(Attribute.ZINDEX);
-    }
-
-    /**
-     * Returns the type of the sub-view.
-     * @readonly
-     * @type {String}
-     */
-
-  }, {
-    key: 'type',
-    get: function get() {
-      return this._type;
-    }
-  }]);
-
-  return SubView;
-}();
-
-var defaultPriorityStrength = true ? new c.Strength('defaultPriority', 0, 1000, 1000) : kiwi.Strength.create(0, 1000, 1000);
-
-function _getConst(name, value) {
-  if (true) {
-    var vr = new c.Variable({ value: value });
-    this._solver.addConstraint(new c.StayConstraint(vr, c.Strength.required, 0));
-    return vr;
-  } else {
-    var _vr = new kiwi.Variable();
-    this._solver.addConstraint(new kiwi.Constraint(_vr, kiwi.Operator.Eq, value));
-    return _vr;
-  }
-}
-
-function _getSubView(viewName) {
-  if (!viewName) {
-    return this._parentSubView;
-  } else if (viewName.name) {
-    this._subViews[viewName.name] = this._subViews[viewName.name] || new SubView({
-      name: viewName.name,
-      solver: this._solver
-    });
-    this._subViews[viewName.name]._type = this._subViews[viewName.name]._type || viewName.type;
-    return this._subViews[viewName.name];
-  } else {
-    this._subViews[viewName] = this._subViews[viewName] || new SubView({
-      name: viewName,
-      solver: this._solver
-    });
-    return this._subViews[viewName];
-  }
-}
-
-function _getSpacing(constraint) {
-  var index = 4;
-  if (!constraint.view1 && constraint.attr1 === 'left') {
-    index = 3;
-  } else if (!constraint.view1 && constraint.attr1 === 'top') {
-    index = 0;
-  } else if (!constraint.view2 && constraint.attr2 === 'right') {
-    index = 1;
-  } else if (!constraint.view2 && constraint.attr2 === 'bottom') {
-    index = 2;
-  } else {
-    switch (constraint.attr1) {
-      case 'left':
-      case 'right':
-      case 'centerX':
-      case 'leading':
-      case 'trailing':
-        index = 4;
-        break;
-      case 'zIndex':
-        index = 6;
-        break;
-      default:
-        index = 5;
-    }
-  }
-  this._spacingVars = this._spacingVars || new Array(7);
-  this._spacingExpr = this._spacingExpr || new Array(7);
-  if (!this._spacingVars[index]) {
-    if (true) {
-      this._spacingVars[index] = new c.Variable();
-      this._solver.addEditVar(this._spacingVars[index]);
-      this._spacingExpr[index] = c.minus(0, this._spacingVars[index]);
-    } else {
-      this._spacingVars[index] = new kiwi.Variable();
-      this._solver.addEditVariable(this._spacingVars[index], kiwi.Strength.create(999, 1000, 1000));
-      this._spacingExpr[index] = this._spacingVars[index].multiply(-1);
-    }
-    this._solver.suggestValue(this._spacingVars[index], this._spacing[index]);
-  }
-  return this._spacingExpr[index];
-}
-
-function _addConstraint(constraint) {
-  //this.constraints.push(constraint);
-  var relation = void 0;
-  var multiplier = constraint.multiplier !== undefined ? constraint.multiplier : 1;
-  var constant = constraint.constant !== undefined ? constraint.constant : 0;
-  if (constant === 'default') {
-    constant = _getSpacing.call(this, constraint);
-  }
-  var attr1 = _getSubView.call(this, constraint.view1)._getAttr(constraint.attr1);
-  var attr2 = void 0;
-  if (true) {
-    if (constraint.attr2 === Attribute.CONST) {
-      attr2 = _getConst.call(this, undefined, constraint.constant);
-    } else {
-      attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);
-      if (multiplier !== 1 && constant) {
-        attr2 = c.plus(c.times(attr2, multiplier), constant);
-      } else if (constant) {
-        attr2 = c.plus(attr2, constant);
-      } else if (multiplier !== 1) {
-        attr2 = c.times(attr2, multiplier);
-      }
-    }
-    var strength = constraint.priority !== undefined && constraint.priority < 1000 ? new c.Strength('priority', 0, constraint.priority, 1000) : defaultPriorityStrength;
-    switch (constraint.relation) {
-      case Relation.EQU:
-        relation = new c.Equation(attr1, attr2, strength);
-        break;
-      case Relation.GEQ:
-        relation = new c.Inequality(attr1, c.GEQ, attr2, strength);
-        break;
-      case Relation.LEQ:
-        relation = new c.Inequality(attr1, c.LEQ, attr2, strength);
-        break;
-      default:
-        throw 'Invalid relation specified: ' + constraint.relation;
-    }
-  } else {
-    if (constraint.attr2 === Attribute.CONST) {
-      attr2 = _getConst.call(this, undefined, constraint.constant);
-    } else {
-      attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);
-      if (multiplier !== 1 && constant) {
-        attr2 = attr2.multiply(multiplier).plus(constant);
-      } else if (constant) {
-        attr2 = attr2.plus(constant);
-      } else if (multiplier !== 1) {
-        attr2 = attr2.multiply(multiplier);
-      }
-    }
-    var _strength = constraint.priority !== undefined && constraint.priority < 1000 ? kiwi.Strength.create(0, constraint.priority, 1000) : defaultPriorityStrength;
-    switch (constraint.relation) {
-      case Relation.EQU:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Eq, attr2, _strength);
-        break;
-      case Relation.GEQ:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Ge, attr2, _strength);
-        break;
-      case Relation.LEQ:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Le, attr2, _strength);
-        break;
-      default:
-        throw 'Invalid relation specified: ' + constraint.relation;
-    }
-  }
-  this._solver.addConstraint(relation);
-}
-
-function _compareSpacing(old, newz) {
-  if (old === newz) {
-    return true;
-  }
-  if (!old || !newz) {
-    return false;
-  }
-  for (var i = 0; i < 7; i++) {
-    if (old[i] !== newz[i]) {
-      return false;
-    }
-  }
-  return true;
-}
-
-/**
- * AutoLayoutJS API reference.
- *
- * ### Index
- *
- * |Entity|Type|Description|
- * |---|---|---|
- * |[AutoLayout](#autolayout)|`namespace`|Top level AutoLayout object.|
- * |[VisualFormat](#autolayoutvisualformat--object)|`namespace`|Parses VFL into constraints.|
- * |[View](#autolayoutview)|`class`|Main entity for adding & evaluating constraints.|
- * |[SubView](#autolayoutsubview--object)|`class`|SubView's are automatically created when constraints are added to views. They give access to the evaluated results.|
- * |[Attribute](#autolayoutattribute--enum)|`enum`|Attribute types that are supported when adding constraints.|
- * |[Relation](#autolayoutrelation--enum)|`enum`|Relationship types that are supported when adding constraints.|
- * |[Priority](#autolayoutpriority--enum)|`enum`|Default priority values for when adding constraints.|
- *
- * ### AutoLayout
- *
- * @module AutoLayout
- */
-
-var View = function () {
-
-  /**
-   * @class View
-   * @param {Object} [options] Configuration options.
-   * @param {Number} [options.width] Initial width of the view.
-   * @param {Number} [options.height] Initial height of the view.
-   * @param {Number|Object} [options.spacing] Spacing for the view (default: 8) (see `setSpacing`).
-   * @param {Array} [options.constraints] One or more constraint definitions (see `addConstraints`).
-   */
-  function View(options) {
-    _classCallCheck(this, View);
-
-    this._solver = true ? new c.SimplexSolver() : new kiwi.Solver();
-    this._subViews = {};
-    //this._spacing = undefined;
-    this._parentSubView = new SubView({
-      solver: this._solver
-    });
-    this.setSpacing(options && options.spacing !== undefined ? options.spacing : 8);
-    //this.constraints = [];
-    if (options) {
-      if (options.width !== undefined || options.height !== undefined) {
-        this.setSize(options.width, options.height);
-      }
-      if (options.constraints) {
-        this.addConstraints(options.constraints);
-      }
-    }
-  }
-
-  /**
-   * Sets the width and height of the view.
-   *
-   * @param {Number} width Width of the view.
-   * @param {Number} height Height of the view.
-   * @return {View} this
-   */
-
-
-  _createClass(View, [{
-    key: 'setSize',
-    value: function setSize(width, height /*, depth*/) {
-      this._parentSubView.intrinsicWidth = width;
-      this._parentSubView.intrinsicHeight = height;
-      return this;
-    }
-
-    /**
-     * Width that was set using `setSize`.
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'setSpacing',
-
-
-    /**
-     * Sets the spacing for the view.
-     *
-     * The spacing can be set for 7 different variables:
-     * `top`, `right`, `bottom`, `left`, `width`, `height` and `zIndex`. The `left`-spacing is
-     * used when a spacer is used between the parent-view and a sub-view (e.g. `|-[subView]`).
-     * The same is true for the `right`, `top` and `bottom` spacers. The `width` and `height` are
-     * used for spacers in between sub-views (e.g. `[view1]-[view2]`).
-     *
-     * Instead of using the full spacing syntax, it is also possible to use shorthand notations:
-     *
-     * |Syntax|Type|Description|
-     * |---|---|---|
-     * |`[top, right, bottom, left, width, height, zIndex]`|Array(7)|Full syntax including z-index **(clockwise order)**.|
-     * |`[top, right, bottom, left, width, height]`|Array(6)|Full horizontal & vertical spacing syntax (no z-index) **(clockwise order)**.|
-     * |`[horizontal, vertical, zIndex]`|Array(3)|Horizontal = left, right, width, vertical = top, bottom, height.|
-     * |`[horizontal, vertical]`|Array(2)|Horizontal = left, right, width, vertical = top, bottom, height, z-index = 1.|
-     * |`spacing`|Number|Horizontal & vertical spacing are all the same, z-index = 1.|
-     *
-     * Examples:
-     * ```javascript
-     * view.setSpacing(10); // horizontal & vertical spacing 10
-     * view.setSpacing([10, 15, 2]); // horizontal spacing 10, vertical spacing 15, z-axis spacing 2
-     * view.setSpacing([10, 20, 10, 20, 5, 5]); // top, right, bottom, left, horizontal, vertical
-     * view.setSpacing([10, 20, 10, 20, 5, 5, 1]); // top, right, bottom, left, horizontal, vertical, z
-     * ```
-     *
-     * @param {Number|Array} spacing
-     * @return {View} this
-     */
-    value: function setSpacing(spacing) {
-      // convert spacing into array: [top, right, bottom, left, horz, vert, z-index]
-      switch (Array.isArray(spacing) ? spacing.length : -1) {
-        case -1:
-          spacing = [spacing, spacing, spacing, spacing, spacing, spacing, 1];break;
-        case 1:
-          spacing = [spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], 1];break;
-        case 2:
-          spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], 1];break;
-        case 3:
-          spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], spacing[2]];break;
-        case 6:
-          spacing = [spacing[0], spacing[1], spacing[2], spacing[3], spacing[4], spacing[5], 1];break;
-        case 7:
-          break;
-        default:
-          throw 'Invalid spacing syntax';
-      }
-      if (!_compareSpacing(this._spacing, spacing)) {
-        this._spacing = spacing;
-        // update spacing variables
-        if (this._spacingVars) {
-          for (var i = 0; i < this._spacingVars.length; i++) {
-            if (this._spacingVars[i]) {
-              this._solver.suggestValue(this._spacingVars[i], this._spacing[i]);
-            }
-          }
-          if (true) {
-            this._solver.resolve();
-          } else {
-            this._solver.updateVariables();
-          }
-        }
-      }
-      return this;
-    }
-
-    /**
-     * Adds a constraint definition.
-     *
-     * A constraint definition has the following format:
-     *
-     * ```javascript
-     * constraint: {
-     *   view1: {String},
-     *   attr1: {AutoLayout.Attribute},
-     *   relation: {AutoLayout.Relation},
-     *   view2: {String},
-     *   attr2: {AutoLayout.Attribute},
-     *   multiplier: {Number},
-     *   constant: {Number},
-     *   priority: {Number}(0..1000)
-     * }
-     * ```
-     * @param {Object} constraint Constraint definition.
-     * @return {View} this
-     */
-
-  }, {
-    key: 'addConstraint',
-    value: function addConstraint(constraint) {
-      _addConstraint.call(this, constraint);
-      if (!true) {
-        this._solver.updateVariables();
-      }
-      return this;
-    }
-
-    /**
-     * Adds one or more constraint definitions.
-     *
-     * A constraint definition has the following format:
-     *
-     * ```javascript
-     * constraint: {
-     *   view1: {String},
-     *   attr1: {AutoLayout.Attribute},
-     *   relation: {AutoLayout.Relation},
-     *   view2: {String},
-     *   attr2: {AutoLayout.Attribute},
-     *   multiplier: {Number},
-     *   constant: {Number},
-     *   priority: {Number}(0..1000)
-     * }
-     * ```
-     * @param {Array} constraints One or more constraint definitions.
-     * @return {View} this
-     */
-
-  }, {
-    key: 'addConstraints',
-    value: function addConstraints(constraints) {
-      for (var j = 0; j < constraints.length; j++) {
-        _addConstraint.call(this, constraints[j]);
-      }
-      if (!true) {
-        this._solver.updateVariables();
-      }
-      return this;
-    }
-
-    /**
-     * Dictionary of `SubView` objects that have been created when adding constraints.
-     * @readonly
-     * @type {Object.SubView}
-     */
-
-  }, {
-    key: 'width',
-    get: function get() {
-      return this._parentSubView.intrinsicWidth;
-    }
-
-    /**
-     * Height that was set using `setSize`.
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'height',
-    get: function get() {
-      return this._parentSubView.intrinsicHeight;
-    }
-
-    /**
-     * Width that is calculated from the constraints and the `.intrinsicWidth` of
-     * the sub-views.
-     *
-     * When the width has been explicitely set using `setSize`, the fittingWidth
-     * will **always** be the same as the explicitely set width. To calculate the size
-     * based on the content, use:
-     * ```javascript
-     * var view = new AutoLayout.View({
-     *   constraints: VisualFormat.parse('|-[view1]-[view2]-'),
-     *   spacing: 20
-     * });
-     * view.subViews.view1.intrinsicWidth = 100;
-     * view.subViews.view2.intrinsicWidth = 100;
-     * console.log('fittingWidth: ' + view.fittingWidth); // 260
-     * ```
-     *
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'fittingWidth',
-    get: function get() {
-      return this._parentSubView.width;
-    }
-
-    /**
-     * Height that is calculated from the constraints and the `.intrinsicHeight` of
-     * the sub-views.
-     *
-     * See `.fittingWidth`.
-     *
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'fittingHeight',
-    get: function get() {
-      return this._parentSubView.height;
-    }
-  }, {
-    key: 'subViews',
-    get: function get() {
-      return this._subViews;
-    }
-
-    /**
-     * Checks whether the constraints incompletely specify the location
-     * of the subViews.
-     * @private
-     */
-    //get hasAmbiguousLayout() {
-    // Todo
-    //}
-
-  }]);
-
-  return View;
-}();
-
-//import DOM from './DOM';
-
-/**
- * AutoLayout.
- *
- * @namespace AutoLayout
- * @property {Attribute} Attribute
- * @property {Relation} Relation
- * @property {Priority} Priority
- * @property {VisualFormat} VisualFormat
- * @property {View} View
- * @property {SubView} SubView
- */
-
-
-var AutoLayout = {
-  Attribute: Attribute,
-  Relation: Relation,
-  Priority: Priority,
-  VisualFormat: VisualFormat,
-  View: View,
-  SubView: SubView
-  //DOM: DOM
-};
-
-module.exports = AutoLayout;
-
-},{"cassowary/bin/c":2}],2:[function(require,module,exports){
-/**
- * Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)
- * Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros
- *
- * Use of this source code is governed by the LGPL, which can be found in the
- * COPYING.LGPL file.
- *
- * This is a compiled version of Cassowary/JS. For source versions or to
- * contribute, see the github project:
- *
- *  https://github.com/slightlyoff/cassowary-js-refactor
- *
- */
-
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f=this.setVariable.bind(this),g=this.terms,h=g.get(b);g.delete(b),this.constant+=h*c.constant,c.terms.each(function(b,c){var i=g.get(b);if(i){var j=i+h*c;a.approx(j,0)?(e.noteRemovedVariable(b,d),g.delete(b)):f(b,j)}else f(b,h*c),e&&e.noteAddedVariable(b,d)}),a.trace&&a.traceprint("Now this is "+this)},changeSubject:function(a,b){this.setVariable(a,this.newSubject(b))},newSubject:function(b){a.trace&&a.fnenterprint("newSubject:"+b);var c=1/this.terms.get(b);return this.terms.delete(b),this.multiplyMe(-c),c},coefficientFor:function(a){return this.terms.get(a)||0},get isConstant(){return 0==this.terms.size},toString:function(){var b="",c=!1;if(!a.approx(this.constant,0)||this.isConstant){if(b+=this.constant,this.isConstant)return b;c=!0}return this.terms.each(function(a,d){c&&(b+=" + "),b+=d+"*"+a,c=!0}),b},equals:function(b){return b===this?!0:b instanceof a.Expression&&b.constant===this.constant&&b.terms.equals(this.terms)},Plus:function(a,b){return a.plus(b)},Minus:function(a,b){return a.minus(b)},Times:function(a,b){return a.times(b)},Divide:function(a,b){return a.divide(b)}})}(this.c||module.parent.exports||{}),function(a){"use strict";a.AbstractConstraint=a.inherit({initialize:function(b,c){this.hashCode=a._inc(),this.strength=b||a.Strength.required,this.weight=c||1},isEditConstraint:!1,isInequality:!1,isStayConstraint:!1,get required(){return this.strength===a.Strength.required},toString:function(){return this.strength+" {"+this.weight+"} ("+this.expression+")"}});var b=a.AbstractConstraint.prototype.toString,c=function(b,c,d){a.AbstractConstraint.call(this,c||a.Strength.strong,d),this.variable=b,this.expression=new 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n=b,o=c,p=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(n),q,r),o==a.LEQ)this.expression.multiplyMe(-1),this.expression.addVariable(p);else{if(o!=a.GEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");this.expression.addVariable(p,-1)}}else if(j&&(i||m)){var n=e,o=c,p=b,q=f,r=g;if(d.call(this,this._cloneOrNewCle(n),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addVariable(p);else{if(o!=a.LEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");this.expression.addVariable(p,-1)}}else{if(h&&m){var s=b,o=c,t=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(s),q,r),o==a.LEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(t));else{if(o!=a.GEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");this.expression.addExpression(this._cloneOrNewCle(t),-1)}return this}if(l&&i){var s=e,o=c,t=b,q=f,r=g;if(d.call(this,this._cloneOrNewCle(s),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(t));else{if(o!=a.LEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");this.expression.addExpression(this._cloneOrNewCle(t),-1)}return this}if(h&&i){var s=b,o=c,t=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(t),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(s));else{if(o!=a.LEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");this.expression.addExpression(this._cloneOrNewCle(s),-1)}}else{if(h)return d.call(this,b,c,e);if(c==a.GEQ)d.call(this,new a.Expression(e),f,g),this.expression.multiplyMe(-1),this.expression.addVariable(b);else{if(c!=a.LEQ)throw new a.InternalError("Invalid operator in c.Inequality constructor");d.call(this,new a.Expression(e),f,g),this.expression.addVariable(b,-1)}}}},isInequality:!0,toString:function(){return d.prototype.toString.call(this)+" >= 0) id: "+this.hashCode}}),a.Equation=a.inherit({"extends":a.Constraint,initialize:function(b,c,e,f){if(b instanceof a.Expression&&!c||c instanceof a.Strength)d.call(this,b,c,e);else if(b instanceof a.AbstractVariable&&c instanceof a.Expression){var g=b,h=c,i=e,j=f;d.call(this,h.clone(),i,j),this.expression.addVariable(g,-1)}else if(b instanceof a.AbstractVariable&&"number"==typeof c){var g=b,k=c,i=e,j=f;d.call(this,new a.Expression(k),i,j),this.expression.addVariable(g,-1)}else if(b instanceof a.Expression&&c instanceof a.AbstractVariable){var h=b,g=c,i=e,j=f;d.call(this,h.clone(),i,j),this.expression.addVariable(g,-1)}else{if(!(b instanceof a.Expression||b instanceof a.AbstractVariable||"number"==typeof b)||!(c instanceof a.Expression||c instanceof a.AbstractVariable||"number"==typeof c))throw"Bad initializer to c.Equation";b=b instanceof a.Expression?b.clone():new a.Expression(b),c=c instanceof a.Expression?c.clone():new a.Expression(c),d.call(this,b,e,f),this.expression.addExpression(c,-1)}a.assert(this.strength instanceof a.Strength,"_strength not set")},toString:function(){return d.prototype.toString.call(this)+" = 0)"}})}(this.c||module.parent.exports||{}),function(a){"use strict";a.EditInfo=a.inherit({initialize:function(a,b,c,d,e){this.constraint=a,this.editPlus=b,this.editMinus=c,this.prevEditConstant=d,this.index=e},toString:function(){return"<cn="+this.constraint+", ep="+this.editPlus+", em="+this.editMinus+", pec="+this.prevEditConstant+", index="+this.index+">"}})}(this.c||module.parent.exports||{}),function(a){"use strict";a.Tableau=a.inherit({initialize:function(){this.columns=new a.HashTable,this.rows=new a.HashTable,this._infeasibleRows=new a.HashSet,this._externalRows=new a.HashSet,this._externalParametricVars=new a.HashSet},noteRemovedVariable:function(b,c){a.trace&&console.log("c.Tableau::noteRemovedVariable: ",b,c);var d=this.columns.get(b);c&&d&&d.delete(c)},noteAddedVariable:function(a,b){b&&this.insertColVar(a,b)},getInternalInfo:function(){var a="Tableau Information:\n";return a+="Rows: "+this.rows.size,a+=" (= "+(this.rows.size-1)+" constraints)",a+="\nColumns: "+this.columns.size,a+="\nInfeasible Rows: "+this._infeasibleRows.size,a+="\nExternal basic variables: "+this._externalRows.size,a+="\nExternal parametric variables: ",a+=this._externalParametricVars.size,a+="\n"},toString:function(){var a="Tableau:\n";return this.rows.each(function(b,c){a+=b,a+=" <==> ",a+=c,a+="\n"}),a+="\nColumns:\n",a+=this.columns,a+="\nInfeasible rows: ",a+=this._infeasibleRows,a+="External basic variables: ",a+=this._externalRows,a+="External parametric variables: ",a+=this._externalParametricVars},insertColVar:function(b,c){var d=this.columns.get(b);d||(d=new a.HashSet,this.columns.set(b,d)),d.add(c)},addRow:function(b,c){a.trace&&a.fnenterprint("addRow: "+b+", "+c),this.rows.set(b,c),c.terms.each(function(a){this.insertColVar(a,b),a.isExternal&&this._externalParametricVars.add(a)},this),b.isExternal&&this._externalRows.add(b),a.trace&&a.traceprint(""+this)},removeColumn:function(b){a.trace&&a.fnenterprint("removeColumn:"+b);var c=this.columns.get(b);c?(this.columns.delete(b),c.each(function(a){var c=this.rows.get(a);c.terms.delete(b)},this)):a.trace&&console.log("Could not find var",b,"in columns"),b.isExternal&&(this._externalRows.delete(b),this._externalParametricVars.delete(b))},removeRow:function(b){a.trace&&a.fnenterprint("removeRow:"+b);var c=this.rows.get(b);return a.assert(null!=c),c.terms.each(function(c){var e=this.columns.get(c);null!=e&&(a.trace&&console.log("removing from varset:",b),e.delete(b))},this),this._infeasibleRows.delete(b),b.isExternal&&this._externalRows.delete(b),this.rows.delete(b),a.trace&&a.fnexitprint("returning "+c),c},substituteOut:function(b,c){a.trace&&a.fnenterprint("substituteOut:"+b+", "+c),a.trace&&a.traceprint(""+this);var d=this.columns.get(b);d.each(function(a){var d=this.rows.get(a);d.substituteOut(b,c,a,this),a.isRestricted&&0>d.constant&&this._infeasibleRows.add(a)},this),b.isExternal&&(this._externalRows.add(b),this._externalParametricVars.delete(b)),this.columns.delete(b)},columnsHasKey:function(a){return!!this.columns.get(a)}})}(this.c||module.parent.exports||{}),function(a){var b=a.Tableau,c=b.prototype,d=1e-8,e=a.Strength.weak;a.SimplexSolver=a.inherit({"extends":a.Tableau,initialize:function(){a.Tableau.call(this),this._stayMinusErrorVars=[],this._stayPlusErrorVars=[],this._errorVars=new a.HashTable,this._markerVars=new a.HashTable,this._objective=new a.ObjectiveVariable({name:"Z"}),this._editVarMap=new a.HashTable,this._editVarList=[],this._slackCounter=0,this._artificialCounter=0,this._dummyCounter=0,this.autoSolve=!0,this._fNeedsSolving=!1,this._optimizeCount=0,this.rows.set(this._objective,new a.Expression),this._stkCedcns=[0],a.trace&&a.traceprint("objective expr == "+this.rows.get(this._objective))},addLowerBound:function(b,c){var d=new a.Inequality(b,a.GEQ,new a.Expression(c));return this.addConstraint(d)},addUpperBound:function(b,c){var d=new a.Inequality(b,a.LEQ,new a.Expression(c));return this.addConstraint(d)},addBounds:function(a,b,c){return this.addLowerBound(a,b),this.addUpperBound(a,c),this},add:function(){for(var a=0;arguments.length>a;a++)this.addConstraint(arguments[a]);return this},addConstraint:function(b){a.trace&&a.fnenterprint("addConstraint: "+b);var c=Array(2),d=Array(1),e=this.newExpression(b,c,d);if(d=d[0],this.tryAddingDirectly(e)||this.addWithArtificialVariable(e),this._fNeedsSolving=!0,b.isEditConstraint){var f=this._editVarMap.size,g=c[0],h=c[1];!g instanceof a.SlackVariable&&console.warn("cvEplus not a slack variable =",g),!h instanceof a.SlackVariable&&console.warn("cvEminus not a slack variable =",h),a.debug&&console.log("new c.EditInfo("+b+", "+g+", "+h+", "+d+", "+f+")");var i=new a.EditInfo(b,g,h,d,f);this._editVarMap.set(b.variable,i),this._editVarList[f]={v:b.variable,info:i}}return this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},addConstraintNoException:function(b){a.trace&&a.fnenterprint("addConstraintNoException: "+b);try{return this.addConstraint(b),!0}catch(c){return!1}},addEditVar:function(b,c){return a.trace&&a.fnenterprint("addEditVar: "+b+" @ "+c),this.addConstraint(new a.EditConstraint(b,c||a.Strength.strong))},beginEdit:function(){return a.assert(this._editVarMap.size>0,"_editVarMap.size > 0"),this._infeasibleRows.clear(),this._resetStayConstants(),this._stkCedcns.push(this._editVarMap.size),this},endEdit:function(){return a.assert(this._editVarMap.size>0,"_editVarMap.size > 0"),this.resolve(),this._stkCedcns.pop(),this.removeEditVarsTo(this._stkCedcns[this._stkCedcns.length-1]),this},removeAllEditVars:function(){return this.removeEditVarsTo(0)},removeEditVarsTo:function(b){try{for(var c=this._editVarList.length,d=b;c>d;d++)this._editVarList[d]&&this.removeConstraint(this._editVarMap.get(this._editVarList[d].v).constraint);return this._editVarList.length=b,a.assert(this._editVarMap.size==b,"_editVarMap.size == n"),this}catch(e){throw new a.InternalError("Constraint not found in removeEditVarsTo")}},addPointStays:function(b){return a.trace&&console.log("addPointStays",b),b.forEach(function(a,b){this.addStay(a.x,e,Math.pow(2,b)),this.addStay(a.y,e,Math.pow(2,b))},this),this},addStay:function(b,c,d){var f=new a.StayConstraint(b,c||e,d||1);return this.addConstraint(f)},removeConstraint:function(a){return this.removeConstraintInternal(a),this},removeConstraintInternal:function(b){a.trace&&a.fnenterprint("removeConstraintInternal: "+b),a.trace&&a.traceprint(""+this),this._fNeedsSolving=!0,this._resetStayConstants();var c=this.rows.get(this._objective),d=this._errorVars.get(b);a.trace&&a.traceprint("eVars == "+d),null!=d&&d.each(function(e){var f=this.rows.get(e);null==f?c.addVariable(e,-b.weight*b.strength.symbolicWeight.value,this._objective,this):c.addExpression(f,-b.weight*b.strength.symbolicWeight.value,this._objective,this),a.trace&&a.traceprint("now eVars == "+d)},this);var e=this._markerVars.get(b);if(this._markerVars.delete(b),null==e)throw new a.InternalError("Constraint not found in removeConstraintInternal");if(a.trace&&a.traceprint("Looking to remove var "+e),null==this.rows.get(e)){var f=this.columns.get(e);a.trace&&a.traceprint("Must pivot -- columns are "+f);var g=null,h=0;f.each(function(b){if(b.isRestricted){var c=this.rows.get(b),d=c.coefficientFor(e);if(a.trace&&a.traceprint("Marker "+e+"'s coefficient in "+c+" is "+d),0>d){var f=-c.constant/d;(null==g||h>f||a.approx(f,h)&&b.hashCode<g.hashCode)&&(h=f,g=b)}}},this),null==g&&(a.trace&&a.traceprint("exitVar is still null"),f.each(function(a){if(a.isRestricted){var b=this.rows.get(a),c=b.coefficientFor(e),d=b.constant/c;(null==g||h>d)&&(h=d,g=a)}},this)),null==g&&(0==f.size?this.removeColumn(e):f.escapingEach(function(a){return a!=this._objective?(g=a,{brk:!0}):void 0},this)),null!=g&&this.pivot(e,g)}if(null!=this.rows.get(e)&&this.removeRow(e),null!=d&&d.each(function(a){a!=e&&this.removeColumn(a)},this),b.isStayConstraint){if(null!=d)for(var j=0;this._stayPlusErrorVars.length>j;j++)d.delete(this._stayPlusErrorVars[j]),d.delete(this._stayMinusErrorVars[j])}else if(b.isEditConstraint){a.assert(null!=d,"eVars != null");var k=this._editVarMap.get(b.variable);this.removeColumn(k.editMinus),this._editVarMap.delete(b.variable)}return null!=d&&this._errorVars.delete(d),this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},reset:function(){throw a.trace&&a.fnenterprint("reset"),new a.InternalError("reset not implemented")},resolveArray:function(b){a.trace&&a.fnenterprint("resolveArray"+b);var c=b.length;this._editVarMap.each(function(a,d){var e=d.index;c>e&&this.suggestValue(a,b[e])},this),this.resolve()},resolvePair:function(a,b){this.suggestValue(this._editVarList[0].v,a),this.suggestValue(this._editVarList[1].v,b),this.resolve()},resolve:function(){a.trace&&a.fnenterprint("resolve()"),this.dualOptimize(),this._setExternalVariables(),this._infeasibleRows.clear(),this._resetStayConstants()},suggestValue:function(b,c){a.trace&&console.log("suggestValue("+b+", "+c+")");var d=this._editVarMap.get(b);if(!d)throw new a.Error("suggestValue for variable "+b+", but var is not an edit variable");var e=c-d.prevEditConstant;return d.prevEditConstant=c,this.deltaEditConstant(e,d.editPlus,d.editMinus),this},solve:function(){return this._fNeedsSolving&&(this.optimize(this._objective),this._setExternalVariables()),this},setEditedValue:function(b,c){if(!this.columnsHasKey(b)&&null==this.rows.get(b))return b.value=c,this;if(!a.approx(c,b.value)){this.addEditVar(b),this.beginEdit();try{this.suggestValue(b,c)}catch(d){throw new a.InternalError("Error in setEditedValue")}this.endEdit()}return this},addVar:function(b){if(!this.columnsHasKey(b)&&null==this.rows.get(b)){try{this.addStay(b)}catch(c){throw new a.InternalError("Error in addVar -- required failure is impossible")}a.trace&&a.traceprint("added initial stay on "+b)}return this},getInternalInfo:function(){var a=c.getInternalInfo.call(this);return a+="\nSolver info:\n",a+="Stay Error Variables: ",a+=this._stayPlusErrorVars.length+this._stayMinusErrorVars.length,a+=" ("+this._stayPlusErrorVars.length+" +, ",a+=this._stayMinusErrorVars.length+" -)\n",a+="Edit Variables: "+this._editVarMap.size,a+="\n"},getDebugInfo:function(){return""+this+this.getInternalInfo()+"\n"},toString:function(){var a=c.getInternalInfo.call(this);return a+="\n_stayPlusErrorVars: ",a+="["+this._stayPlusErrorVars+"]",a+="\n_stayMinusErrorVars: ",a+="["+this._stayMinusErrorVars+"]",a+="\n",a+="_editVarMap:\n"+this._editVarMap,a+="\n"},getConstraintMap:function(){return this._markerVars},addWithArtificialVariable:function(b){a.trace&&a.fnenterprint("addWithArtificialVariable: "+b);var c=new a.SlackVariable({value:++this._artificialCounter,prefix:"a"}),d=new a.ObjectiveVariable({name:"az"}),e=b.clone();a.trace&&a.traceprint("before addRows:\n"+this),this.addRow(d,e),this.addRow(c,b),a.trace&&a.traceprint("after addRows:\n"+this),this.optimize(d);var f=this.rows.get(d);if(a.trace&&a.traceprint("azTableauRow.constant == "+f.constant),!a.approx(f.constant,0))throw this.removeRow(d),this.removeColumn(c),new a.RequiredFailure;var g=this.rows.get(c);if(null!=g){if(g.isConstant)return this.removeRow(c),this.removeRow(d),void 0;var h=g.anyPivotableVariable();this.pivot(h,c)}a.assert(null==this.rows.get(c),"rowExpression(av) == null"),this.removeColumn(c),this.removeRow(d)},tryAddingDirectly:function(b){a.trace&&a.fnenterprint("tryAddingDirectly: "+b);var c=this.chooseSubject(b);return null==c?(a.trace&&a.fnexitprint("returning false"),!1):(b.newSubject(c),this.columnsHasKey(c)&&this.substituteOut(c,b),this.addRow(c,b),a.trace&&a.fnexitprint("returning true"),!0)},chooseSubject:function(b){a.trace&&a.fnenterprint("chooseSubject: "+b);var c=null,d=!1,e=!1,f=b.terms,g=f.escapingEach(function(a,b){if(d){if(!a.isRestricted&&!this.columnsHasKey(a))return{retval:a}}else if(a.isRestricted){if(!e&&!a.isDummy&&0>b){var f=this.columns.get(a);(null==f||1==f.size&&this.columnsHasKey(this._objective))&&(c=a,e=!0)}}else c=a,d=!0},this);if(g&&void 0!==g.retval)return g.retval;if(null!=c)return c;var h=0,g=f.escapingEach(function(a,b){return a.isDummy?(this.columnsHasKey(a)||(c=a,h=b),void 0):{retval:null}},this);if(g&&void 0!==g.retval)return g.retval;if(!a.approx(b.constant,0))throw new a.RequiredFailure;return h>0&&b.multiplyMe(-1),c},deltaEditConstant:function(b,c,d){a.trace&&a.fnenterprint("deltaEditConstant :"+b+", "+c+", "+d);var e=this.rows.get(c);if(null!=e)return e.constant+=b,0>e.constant&&this._infeasibleRows.add(c),void 0;var f=this.rows.get(d);if(null!=f)return f.constant+=-b,0>f.constant&&this._infeasibleRows.add(d),void 0;var g=this.columns.get(d);g||console.log("columnVars is null -- tableau is:\n"+this),g.each(function(a){var c=this.rows.get(a),e=c.coefficientFor(d);c.constant+=e*b,a.isRestricted&&0>c.constant&&this._infeasibleRows.add(a)},this)},dualOptimize:function(){a.trace&&a.fnenterprint("dualOptimize:");for(var b=this.rows.get(this._objective);this._infeasibleRows.size;){var c=this._infeasibleRows.values()[0];this._infeasibleRows.delete(c);var d=null,e=this.rows.get(c);if(e&&0>e.constant){var g,f=Number.MAX_VALUE,h=e.terms;if(h.each(function(c,e){if(e>0&&c.isPivotable){var h=b.coefficientFor(c);g=h/e,(f>g||a.approx(g,f)&&c.hashCode<d.hashCode)&&(d=c,f=g)}}),f==Number.MAX_VALUE)throw new a.InternalError("ratio == nil (MAX_VALUE) in dualOptimize");this.pivot(d,c)}}},newExpression:function(b,c,d){a.trace&&(a.fnenterprint("newExpression: "+b),a.traceprint("cn.isInequality == "+b.isInequality),a.traceprint("cn.required == "+b.required));var e=b.expression,f=new a.Expression(e.constant),g=new a.SlackVariable,h=new a.DummyVariable,i=new a.SlackVariable,j=new a.SlackVariable,k=e.terms;if(k.each(function(a,b){var c=this.rows.get(a);c?f.addExpression(c,b):f.addVariable(a,b)},this),b.isInequality){if(a.trace&&a.traceprint("Inequality, adding slack"),++this._slackCounter,g=new a.SlackVariable({value:this._slackCounter,prefix:"s"}),f.setVariable(g,-1),this._markerVars.set(b,g),!b.required){++this._slackCounter,i=new a.SlackVariable({value:this._slackCounter,prefix:"em"}),f.setVariable(i,1);
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a,c,d;if(d=e,/^[0-9]/.test(b.charAt(e))?(c=b.charAt(e),e++):(c=null,0===f&&k("[0-9]")),null!==c)for(a=[];null!==c;)a.push(c),/^[0-9]/.test(b.charAt(e))?(c=b.charAt(e),e++):(c=null,0===f&&k("[0-9]"));else a=null;return null!==a&&(a=function(a,b){return parseInt(b.join(""))}(d,a)),null===a&&(e=d),a}function C(){var a,c,d,g,h;return g=e,h=e,a=B(),null!==a?(46===b.charCodeAt(e)?(c=".",e++):(c=null,0===f&&k('"."')),null!==c?(d=B(),null!==d?a=[a,c,d]:(a=null,e=h)):(a=null,e=h)):(a=null,e=h),null!==a&&(a=function(a,b){return parseFloat(b.join(""))}(g,a)),null===a&&(e=g),a}function D(){var a,c,d,g;if(g=e,/^[\-+]/.test(b.charAt(e))?(a=b.charAt(e),e++):(a=null,0===f&&k("[\\-+]")),a=null!==a?a:"",null!==a){if(/^[0-9]/.test(b.charAt(e))?(d=b.charAt(e),e++):(d=null,0===f&&k("[0-9]")),null!==d)for(c=[];null!==d;)c.push(d),/^[0-9]/.test(b.charAt(e))?(d=b.charAt(e),e++):(d=null,0===f&&k("[0-9]"));else c=null;null!==c?a=[a,c]:(a=null,e=g)}else a=null,e=g;return a}function E(){var a,b;return f++,b=e,a=F(),null!==a&&(a=function(a,b){return b}(b,a)),null===a&&(e=b),f--,0===f&&null===a&&k("identifier"),a}function F(){var a,b,c,d,g;if(f++,d=e,g=e,a=o(),null!==a){for(b=[],c=o();null!==c;)b.push(c),c=o();null!==b?a=[a,b]:(a=null,e=g)}else a=null,e=g;return null!==a&&(a=function(a,b,c){return b+c.join("")}(d,a[0],a[1])),null===a&&(e=d),f--,0===f&&null===a&&k("identifier"),a}function G(){var a,c,d,g,h,i,j;return i=e,a=E(),null!==a&&(a=function(a,b){return{type:"Variable",name:b}}(i,a)),null===a&&(e=i),null===a&&(a=A(),null===a&&(i=e,j=e,40===b.charCodeAt(e)?(a="(",e++):(a=null,0===f&&k('"("')),null!==a?(c=z(),null!==c?(d=P(),null!==d?(g=z(),null!==g?(41===b.charCodeAt(e)?(h=")",e++):(h=null,0===f&&k('")"')),null!==h?a=[a,c,d,g,h]:(a=null,e=j)):(a=null,e=j)):(a=null,e=j)):(a=null,e=j)):(a=null,e=j),null!==a&&(a=function(a,b){return b}(i,a[2])),null===a&&(e=i))),a}function H(){var a,b,c,d,f;return 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43===b.charCodeAt(e)?(a="+",e++):(a=null,0===f&&k('"+"')),null===a&&(45===b.charCodeAt(e)?(a="-",e++):(a=null,0===f&&k('"-"'))),a}function N(){var a,b,c,d,f,g,h,i,j;if(h=e,i=e,a=L(),null!==a){for(b=[],j=e,c=z(),null!==c?(d=O(),null!==d?(f=z(),null!==f?(g=L(),null!==g?c=[c,d,f,g]:(c=null,e=j)):(c=null,e=j)):(c=null,e=j)):(c=null,e=j);null!==c;)b.push(c),j=e,c=z(),null!==c?(d=O(),null!==d?(f=z(),null!==f?(g=L(),null!==g?c=[c,d,f,g]:(c=null,e=j)):(c=null,e=j)):(c=null,e=j)):(c=null,e=j);null!==b?a=[a,b]:(a=null,e=i)}else a=null,e=i;return null!==a&&(a=function(a,b,c){for(var d=b,e=0;c.length>e;e++)d={type:"Inequality",operator:c[e][1],left:d,right:c[e][3]};return d}(h,a[0],a[1])),null===a&&(e=h),a}function O(){var a;return"<="===b.substr(e,2)?(a="<=",e+=2):(a=null,0===f&&k('"<="')),null===a&&(">="===b.substr(e,2)?(a=">=",e+=2):(a=null,0===f&&k('">="')),null===a&&(60===b.charCodeAt(e)?(a="<",e++):(a=null,0===f&&k('"<"')),null===a&&(62===b.charCodeAt(e)?(a=">",e++):(a=null,0===f&&k('">"'))))),a}function P(){var a,c,d,g,h,i,j,l,m;if(j=e,l=e,a=N(),null!==a){for(c=[],m=e,d=z(),null!==d?("=="===b.substr(e,2)?(g="==",e+=2):(g=null,0===f&&k('"=="')),null!==g?(h=z(),null!==h?(i=N(),null!==i?d=[d,g,h,i]:(d=null,e=m)):(d=null,e=m)):(d=null,e=m)):(d=null,e=m);null!==d;)c.push(d),m=e,d=z(),null!==d?("=="===b.substr(e,2)?(g="==",e+=2):(g=null,0===f&&k('"=="')),null!==g?(h=z(),null!==h?(i=N(),null!==i?d=[d,g,h,i]:(d=null,e=m)):(d=null,e=m)):(d=null,e=m)):(d=null,e=m);null!==c?a=[a,c]:(a=null,e=l)}else a=null,e=l;return null!==a&&(a=function(a,b,c){for(var d=b,e=0;c.length>e;e++)d={type:"Equality",operator:c[e][1],left:d,right:c[e][3]};return d}(j,a[0],a[1])),null===a&&(e=j),a}function Q(a){a.sort();for(var b=null,c=[],d=0;a.length>d;d++)a[d]!==b&&(c.push(a[d]),b=a[d]);return c}function R(){for(var a=1,c=1,d=!1,f=0;Math.max(e,g)>f;f++){var h=b.charAt(f);"\n"===h?(d||a++,c=1,d=!1):"\r"===h||"\u2028"===h||"\u2029"===h?(a++,c=1,d=!0):(c++,d=!1)}return{line:a,column:c}}var d={start:l,Statement:m,SourceCharacter:n,IdentifierStart:o,WhiteSpace:p,LineTerminator:q,LineTerminatorSequence:r,EOS:s,EOF:t,Comment:u,MultiLineComment:v,MultiLineCommentNoLineTerminator:w,SingleLineComment:x,_:y,__:z,Literal:A,Integer:B,Real:C,SignedInteger:D,Identifier:E,IdentifierName:F,PrimaryExpression:G,UnaryExpression:H,UnaryOperator:I,MultiplicativeExpression:J,MultiplicativeOperator:K,AdditiveExpression:L,AdditiveOperator:M,InequalityExpression:N,InequalityOperator:O,LinearExpression:P};if(void 0!==c){if(void 0===d[c])throw Error("Invalid rule name: "+a(c)+".")}else c="start";var e=0,f=0,g=0,h=[],S=d[c]();if(null===S||e!==b.length){var T=Math.max(e,g),U=b.length>T?b.charAt(T):null,V=R();throw new this.SyntaxError(Q(h),U,T,V.line,V.column)}return S},toSource:function(){return this._source}};return b.SyntaxError=function(b,c,d,e,f){function g(b,c){var d,e;switch(b.length){case 0:d="end of input";break;case 1:d=b[0];break;default:d=b.slice(0,b.length-1).join(", ")+" or "+b[b.length-1]}return e=c?a(c):"end of input","Expected "+d+" but "+e+" found."}this.name="SyntaxError",this.expected=b,this.found=c,this.message=g(b,c),this.offset=d,this.line=e,this.column=f},b.SyntaxError.prototype=Error.prototype,b}();
-}).call(
-  (typeof module != "undefined") ?
-      (module.compiled = true && module) : this
-);
-
-},{}]},{},[1])(1)
-});
\ No newline at end of file
diff --git a/dist/autolayout.kiwi.js b/dist/autolayout.kiwi.js
deleted file mode 100644
index 0cbc2a2..0000000
--- a/dist/autolayout.kiwi.js
+++ /dev/null
@@ -1,7416 +0,0 @@
-/**
-* AutoLayout.js is licensed under the MIT license. If a copy of the
-* MIT-license was not distributed with this file, You can obtain one at:
-* http://opensource.org/licenses/mit-license.html.
-*
-* @author: Hein Rutjes (IjzerenHein)
-* @license MIT
-* @copyright Gloey Apps, 2017
-*
-* @library autolayout.js
-* @version 0.7.0
-*/
-/*-----------------------------------------------------------------------------
-| Kiwi (TypeScript version)
-|
-| Copyright (c) 2014, Nucleic Development Team & H. Rutjes.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.AutoLayout = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-'use strict';
-
-var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
-var kiwi = require('kiwi.js');
-'use strict';
-
-/**
- * Layout attributes.
- * @enum {String}
- */
-var Attribute = {
-  CONST: 'const',
-  NOTANATTRIBUTE: 'const',
-  VARIABLE: 'var',
-  LEFT: 'left',
-  RIGHT: 'right',
-  TOP: 'top',
-  BOTTOM: 'bottom',
-  WIDTH: 'width',
-  HEIGHT: 'height',
-  CENTERX: 'centerX',
-  CENTERY: 'centerY',
-  /*LEADING: 'leading',
-  TRAILING: 'trailing'*/
-  /** Used by the extended VFL syntax. */
-  ZINDEX: 'zIndex'
-};
-
-/**
- * Relation types.
- * @enum {String}
- */
-var Relation = {
-  /** Less than or equal */
-  LEQ: 'leq',
-  /** Equal */
-  EQU: 'equ',
-  /** Greater than or equal */
-  GEQ: 'geq'
-};
-
-/**
- * Layout priorities.
- * @enum {String}
- */
-var Priority = {
-  REQUIRED: 1000,
-  DEFAULTHIGH: 750,
-  DEFAULTLOW: 250
-  //FITTINGSIZELEVEL: 50,
-};
-
-var parser = function () {
-  /*
-   * Generated by PEG.js 0.8.0.
-   *
-   * http://pegjs.majda.cz/
-   */
-
-  function peg$subclass(child, parent) {
-    function ctor() {
-      this.constructor = child;
-    }
-    ctor.prototype = parent.prototype;
-    child.prototype = new ctor();
-  }
-
-  function SyntaxError(message, expected, found, offset, line, column) {
-    this.message = message;
-    this.expected = expected;
-    this.found = found;
-    this.offset = offset;
-    this.line = line;
-    this.column = column;
-
-    this.name = "SyntaxError";
-  }
-
-  peg$subclass(SyntaxError, Error);
-
-  function parse(input) {
-    var options = arguments.length > 1 ? arguments[1] : {},
-        peg$FAILED = {},
-        peg$startRuleFunctions = { visualFormatString: peg$parsevisualFormatString },
-        peg$startRuleFunction = peg$parsevisualFormatString,
-        peg$c0 = peg$FAILED,
-        peg$c1 = null,
-        peg$c2 = ":",
-        peg$c3 = { type: "literal", value: ":", description: "\":\"" },
-        peg$c4 = [],
-        peg$c5 = function peg$c5(o, superto, view, views, tosuper) {
-      return {
-        orientation: o ? o[0] : 'horizontal',
-        cascade: (superto || []).concat([view], [].concat.apply([], views), tosuper || [])
-      };
-    },
-        peg$c6 = "H",
-        peg$c7 = { type: "literal", value: "H", description: "\"H\"" },
-        peg$c8 = "V",
-        peg$c9 = { type: "literal", value: "V", description: "\"V\"" },
-        peg$c10 = function peg$c10(orient) {
-      return orient == 'H' ? 'horizontal' : 'vertical';
-    },
-        peg$c11 = "|",
-        peg$c12 = { type: "literal", value: "|", description: "\"|\"" },
-        peg$c13 = function peg$c13() {
-      return { view: null };
-    },
-        peg$c14 = "[",
-        peg$c15 = { type: "literal", value: "[", description: "\"[\"" },
-        peg$c16 = "]",
-        peg$c17 = { type: "literal", value: "]", description: "\"]\"" },
-        peg$c18 = function peg$c18(view, predicates) {
-      return extend(view, predicates ? { constraints: predicates } : {});
-    },
-        peg$c19 = "-",
-        peg$c20 = { type: "literal", value: "-", description: "\"-\"" },
-        peg$c21 = function peg$c21(predicateList) {
-      return predicateList;
-    },
-        peg$c22 = function peg$c22() {
-      return [{ relation: 'equ', constant: 'default', $parserOffset: offset() }];
-    },
-        peg$c23 = "",
-        peg$c24 = function peg$c24() {
-      return [{ relation: 'equ', constant: 0, $parserOffset: offset() }];
-    },
-        peg$c25 = function peg$c25(n) {
-      return [{ relation: 'equ', constant: n, $parserOffset: offset() }];
-    },
-        peg$c26 = "(",
-        peg$c27 = { type: "literal", value: "(", description: "\"(\"" },
-        peg$c28 = ",",
-        peg$c29 = { type: "literal", value: ",", description: "\",\"" },
-        peg$c30 = ")",
-        peg$c31 = { type: "literal", value: ")", description: "\")\"" },
-        peg$c32 = function peg$c32(p, ps) {
-      return [p].concat(ps.map(function (p) {
-        return p[1];
-      }));
-    },
-        peg$c33 = "@",
-        peg$c34 = { type: "literal", value: "@", description: "\"@\"" },
-        peg$c35 = function peg$c35(r, o, p) {
-      return extend({ relation: 'equ' }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c36 = "==",
-        peg$c37 = { type: "literal", value: "==", description: "\"==\"" },
-        peg$c38 = function peg$c38() {
-      return { relation: 'equ', $parserOffset: offset() };
-    },
-        peg$c39 = "<=",
-        peg$c40 = { type: "literal", value: "<=", description: "\"<=\"" },
-        peg$c41 = function peg$c41() {
-      return { relation: 'leq', $parserOffset: offset() };
-    },
-        peg$c42 = ">=",
-        peg$c43 = { type: "literal", value: ">=", description: "\">=\"" },
-        peg$c44 = function peg$c44() {
-      return { relation: 'geq', $parserOffset: offset() };
-    },
-        peg$c45 = /^[0-9]/,
-        peg$c46 = { type: "class", value: "[0-9]", description: "[0-9]" },
-        peg$c47 = function peg$c47(digits) {
-      return { priority: parseInt(digits.join(""), 10) };
-    },
-        peg$c48 = function peg$c48(n) {
-      return { constant: n };
-    },
-        peg$c49 = /^[a-zA-Z_]/,
-        peg$c50 = { type: "class", value: "[a-zA-Z_]", description: "[a-zA-Z_]" },
-        peg$c51 = /^[a-zA-Z0-9_]/,
-        peg$c52 = { type: "class", value: "[a-zA-Z0-9_]", description: "[a-zA-Z0-9_]" },
-        peg$c53 = function peg$c53(f, v) {
-      return { view: f + v };
-    },
-        peg$c54 = ".",
-        peg$c55 = { type: "literal", value: ".", description: "\".\"" },
-        peg$c56 = function peg$c56(digits, decimals) {
-      return parseFloat(digits.concat(".").concat(decimals).join(""), 10);
-    },
-        peg$c57 = function peg$c57(digits) {
-      return parseInt(digits.join(""), 10);
-    },
-        peg$currPos = 0,
-        peg$reportedPos = 0,
-        peg$cachedPos = 0,
-        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
-        peg$maxFailPos = 0,
-        peg$maxFailExpected = [],
-        peg$silentFails = 0,
-        peg$result;
-
-    if ("startRule" in options) {
-      if (!(options.startRule in peg$startRuleFunctions)) {
-        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
-      }
-
-      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
-    }
-
-    function text() {
-      return input.substring(peg$reportedPos, peg$currPos);
-    }
-
-    function offset() {
-      return peg$reportedPos;
-    }
-
-    function line() {
-      return peg$computePosDetails(peg$reportedPos).line;
-    }
-
-    function column() {
-      return peg$computePosDetails(peg$reportedPos).column;
-    }
-
-    function expected(description) {
-      throw peg$buildException(null, [{ type: "other", description: description }], peg$reportedPos);
-    }
-
-    function error(message) {
-      throw peg$buildException(message, null, peg$reportedPos);
-    }
-
-    function peg$computePosDetails(pos) {
-      function advance(details, startPos, endPos) {
-        var p, ch;
-
-        for (p = startPos; p < endPos; p++) {
-          ch = input.charAt(p);
-          if (ch === "\n") {
-            if (!details.seenCR) {
-              details.line++;
-            }
-            details.column = 1;
-            details.seenCR = false;
-          } else if (ch === "\r" || ch === '\u2028' || ch === '\u2029') {
-            details.line++;
-            details.column = 1;
-            details.seenCR = true;
-          } else {
-            details.column++;
-            details.seenCR = false;
-          }
-        }
-      }
-
-      if (peg$cachedPos !== pos) {
-        if (peg$cachedPos > pos) {
-          peg$cachedPos = 0;
-          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
-        }
-        advance(peg$cachedPosDetails, peg$cachedPos, pos);
-        peg$cachedPos = pos;
-      }
-
-      return peg$cachedPosDetails;
-    }
-
-    function peg$fail(expected) {
-      if (peg$currPos < peg$maxFailPos) {
-        return;
-      }
-
-      if (peg$currPos > peg$maxFailPos) {
-        peg$maxFailPos = peg$currPos;
-        peg$maxFailExpected = [];
-      }
-
-      peg$maxFailExpected.push(expected);
-    }
-
-    function peg$buildException(message, expected, pos) {
-      function cleanupExpected(expected) {
-        var i = 1;
-
-        expected.sort(function (a, b) {
-          if (a.description < b.description) {
-            return -1;
-          } else if (a.description > b.description) {
-            return 1;
-          } else {
-            return 0;
-          }
-        });
-
-        while (i < expected.length) {
-          if (expected[i - 1] === expected[i]) {
-            expected.splice(i, 1);
-          } else {
-            i++;
-          }
-        }
-      }
-
-      function buildMessage(expected, found) {
-        function stringEscape(s) {
-          function hex(ch) {
-            return ch.charCodeAt(0).toString(16).toUpperCase();
-          }
-
-          return s.replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\x08/g, '\\b').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\f/g, '\\f').replace(/\r/g, '\\r').replace(/[\x00-\x07\x0B\x0E\x0F]/g, function (ch) {
-            return '\\x0' + hex(ch);
-          }).replace(/[\x10-\x1F\x80-\xFF]/g, function (ch) {
-            return '\\x' + hex(ch);
-          }).replace(/[\u0180-\u0FFF]/g, function (ch) {
-            return '\\u0' + hex(ch);
-          }).replace(/[\u1080-\uFFFF]/g, function (ch) {
-            return '\\u' + hex(ch);
-          });
-        }
-
-        var expectedDescs = new Array(expected.length),
-            expectedDesc,
-            foundDesc,
-            i;
-
-        for (i = 0; i < expected.length; i++) {
-          expectedDescs[i] = expected[i].description;
-        }
-
-        expectedDesc = expected.length > 1 ? expectedDescs.slice(0, -1).join(", ") + " or " + expectedDescs[expected.length - 1] : expectedDescs[0];
-
-        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
-
-        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
-      }
-
-      var posDetails = peg$computePosDetails(pos),
-          found = pos < input.length ? input.charAt(pos) : null;
-
-      if (expected !== null) {
-        cleanupExpected(expected);
-      }
-
-      return new SyntaxError(message !== null ? message : buildMessage(expected, found), expected, found, pos, posDetails.line, posDetails.column);
-    }
-
-    function peg$parsevisualFormatString() {
-      var s0, s1, s2, s3, s4, s5, s6, s7;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = peg$parseorientation();
-      if (s2 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 58) {
-          s3 = peg$c2;
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c3);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s2 = [s2, s3];
-          s1 = s2;
-        } else {
-          peg$currPos = s1;
-          s1 = peg$c0;
-        }
-      } else {
-        peg$currPos = s1;
-        s1 = peg$c0;
-      }
-      if (s1 === peg$FAILED) {
-        s1 = peg$c1;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = peg$parsesuperview();
-        if (s3 !== peg$FAILED) {
-          s4 = peg$parseconnection();
-          if (s4 !== peg$FAILED) {
-            s3 = [s3, s4];
-            s2 = s3;
-          } else {
-            peg$currPos = s2;
-            s2 = peg$c0;
-          }
-        } else {
-          peg$currPos = s2;
-          s2 = peg$c0;
-        }
-        if (s2 === peg$FAILED) {
-          s2 = peg$c1;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseview();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$currPos;
-            s6 = peg$parseconnection();
-            if (s6 !== peg$FAILED) {
-              s7 = peg$parseview();
-              if (s7 !== peg$FAILED) {
-                s6 = [s6, s7];
-                s5 = s6;
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            } else {
-              peg$currPos = s5;
-              s5 = peg$c0;
-            }
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parseview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parsesuperview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-              if (s5 === peg$FAILED) {
-                s5 = peg$c1;
-              }
-              if (s5 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c5(s1, s2, s3, s4, s5);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseorientation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 72) {
-        s1 = peg$c6;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c7);
-        }
-      }
-      if (s1 === peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 86) {
-          s1 = peg$c8;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c9);
-          }
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c10(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parsesuperview() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 124) {
-        s1 = peg$c11;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c12);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c13();
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseview() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 91) {
-        s1 = peg$c14;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c15);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseviewName();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsepredicateListWithParens();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c1;
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 93) {
-              s4 = peg$c16;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c17);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c18(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseconnection() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 45) {
-        s1 = peg$c19;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c20);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateList();
-        if (s2 !== peg$FAILED) {
-          if (input.charCodeAt(peg$currPos) === 45) {
-            s3 = peg$c19;
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c20);
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c21(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c19;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c20);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c22();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          s1 = peg$c23;
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c24();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateList() {
-      var s0;
-
-      s0 = peg$parsesimplePredicate();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsepredicateListWithParens();
-      }
-
-      return s0;
-    }
-
-    function peg$parsesimplePredicate() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c25(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parsepredicateListWithParens() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c26;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c27);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c28;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c29);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parsepredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c28;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c29);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parsepredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c30;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c31);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c32(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c1;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c33;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c34);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c1;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c35(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserelation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c36) {
-        s1 = peg$c36;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c37);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c38();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c39) {
-          s1 = peg$c39;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c40);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c41();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c42) {
-            s1 = peg$c42;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c43);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c44();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseobjectOfPredicate() {
-      var s0;
-
-      s0 = peg$parseconstant();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parseviewName();
-      }
-
-      return s0;
-    }
-
-    function peg$parsepriority() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c45.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c46);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c47(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseconstant() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c48(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseviewName() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c49.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c50);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c49.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c50);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c51.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c52);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c51.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c52);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c53(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsenumber() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c45.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c46);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 46) {
-          s2 = peg$c54;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c55);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (peg$c45.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c46);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            while (s4 !== peg$FAILED) {
-              s3.push(s4);
-              if (peg$c45.test(input.charAt(peg$currPos))) {
-                s4 = input.charAt(peg$currPos);
-                peg$currPos++;
-              } else {
-                s4 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c46);
-                }
-              }
-            }
-          } else {
-            s3 = peg$c0;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c56(s1, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = [];
-        if (peg$c45.test(input.charAt(peg$currPos))) {
-          s2 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c46);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          while (s2 !== peg$FAILED) {
-            s1.push(s2);
-            if (peg$c45.test(input.charAt(peg$currPos))) {
-              s2 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s2 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c46);
-              }
-            }
-          }
-        } else {
-          s1 = peg$c0;
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c57(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function extend(dst) {
-      for (var i = 1; i < arguments.length; i++) {
-        for (var k in arguments[i]) {
-          dst[k] = arguments[i][k];
-        }
-      }
-      return dst;
-    }
-
-    peg$result = peg$startRuleFunction();
-
-    if (peg$result !== peg$FAILED && peg$currPos === input.length) {
-      return peg$result;
-    } else {
-      if (peg$result !== peg$FAILED && peg$currPos < input.length) {
-        peg$fail({ type: "end", description: "end of input" });
-      }
-
-      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
-    }
-  }
-
-  return {
-    SyntaxError: SyntaxError,
-    parse: parse
-  };
-}();
-
-var parserExt = function () {
-  /*
-   * Generated by PEG.js 0.8.0.
-   *
-   * http://pegjs.majda.cz/
-   */
-
-  function peg$subclass(child, parent) {
-    function ctor() {
-      this.constructor = child;
-    }
-    ctor.prototype = parent.prototype;
-    child.prototype = new ctor();
-  }
-
-  function SyntaxError(message, expected, found, offset, line, column) {
-    this.message = message;
-    this.expected = expected;
-    this.found = found;
-    this.offset = offset;
-    this.line = line;
-    this.column = column;
-
-    this.name = "SyntaxError";
-  }
-
-  peg$subclass(SyntaxError, Error);
-
-  function parse(input) {
-    var options = arguments.length > 1 ? arguments[1] : {},
-        peg$FAILED = {},
-        peg$startRuleFunctions = { visualFormatStringExt: peg$parsevisualFormatStringExt },
-        peg$startRuleFunction = peg$parsevisualFormatStringExt,
-        peg$c0 = peg$FAILED,
-        peg$c1 = "C:",
-        peg$c2 = { type: "literal", value: "C:", description: "\"C:\"" },
-        peg$c3 = [],
-        peg$c4 = null,
-        peg$c5 = function peg$c5(view, attribute, attributes, comments) {
-      return {
-        type: 'attribute',
-        view: view.view,
-        attributes: [attribute].concat(attributes)
-      };
-    },
-        peg$c6 = function peg$c6(attr, predicates) {
-      return { attr: attr, predicates: predicates };
-    },
-        peg$c7 = ":",
-        peg$c8 = { type: "literal", value: ":", description: "\":\"" },
-        peg$c9 = function peg$c9(o, superto, view, views, tosuper, comments) {
-      return {
-        type: 'vfl',
-        orientation: o ? o[0] : 'horizontal',
-        cascade: (superto || []).concat(view, [].concat.apply([], views), tosuper || [])
-      };
-    },
-        peg$c10 = "HV",
-        peg$c11 = { type: "literal", value: "HV", description: "\"HV\"" },
-        peg$c12 = function peg$c12() {
-      return 'horzvert';
-    },
-        peg$c13 = "H",
-        peg$c14 = { type: "literal", value: "H", description: "\"H\"" },
-        peg$c15 = function peg$c15() {
-      return 'horizontal';
-    },
-        peg$c16 = "V",
-        peg$c17 = { type: "literal", value: "V", description: "\"V\"" },
-        peg$c18 = function peg$c18() {
-      return 'vertical';
-    },
-        peg$c19 = "Z",
-        peg$c20 = { type: "literal", value: "Z", description: "\"Z\"" },
-        peg$c21 = function peg$c21() {
-      return 'zIndex';
-    },
-        peg$c22 = " ",
-        peg$c23 = { type: "literal", value: " ", description: "\" \"" },
-        peg$c24 = "//",
-        peg$c25 = { type: "literal", value: "//", description: "\"//\"" },
-        peg$c26 = { type: "any", description: "any character" },
-        peg$c27 = "|",
-        peg$c28 = { type: "literal", value: "|", description: "\"|\"" },
-        peg$c29 = function peg$c29() {
-      return { view: null };
-    },
-        peg$c30 = "[",
-        peg$c31 = { type: "literal", value: "[", description: "\"[\"" },
-        peg$c32 = ",",
-        peg$c33 = { type: "literal", value: ",", description: "\",\"" },
-        peg$c34 = "]",
-        peg$c35 = { type: "literal", value: "]", description: "\"]\"" },
-        peg$c36 = function peg$c36(view, views) {
-      return views.length ? [view].concat([].concat.apply([], views)) : view;
-    },
-        peg$c37 = function peg$c37(view, predicates, cascadedViews) {
-      return extend(extend(view, predicates ? { constraints: predicates } : {}), cascadedViews ? {
-        cascade: cascadedViews
-      } : {});
-    },
-        peg$c38 = function peg$c38(views, connection) {
-      return [].concat([].concat.apply([], views), [connection]);
-    },
-        peg$c39 = "->",
-        peg$c40 = { type: "literal", value: "->", description: "\"->\"" },
-        peg$c41 = function peg$c41() {
-      return [{ relation: 'none' }];
-    },
-        peg$c42 = "-",
-        peg$c43 = { type: "literal", value: "-", description: "\"-\"" },
-        peg$c44 = function peg$c44(predicateList) {
-      return predicateList;
-    },
-        peg$c45 = function peg$c45() {
-      return [{ relation: 'equ', constant: 'default' }];
-    },
-        peg$c46 = "~",
-        peg$c47 = { type: "literal", value: "~", description: "\"~\"" },
-        peg$c48 = function peg$c48() {
-      return [{ relation: 'equ', equalSpacing: true }];
-    },
-        peg$c49 = "",
-        peg$c50 = function peg$c50() {
-      return [{ relation: 'equ', constant: 0 }];
-    },
-        peg$c51 = function peg$c51(p) {
-      return [{ relation: 'equ', multiplier: p.multiplier }];
-    },
-        peg$c52 = function peg$c52(n) {
-      return [{ relation: 'equ', constant: n }];
-    },
-        peg$c53 = "(",
-        peg$c54 = { type: "literal", value: "(", description: "\"(\"" },
-        peg$c55 = ")",
-        peg$c56 = { type: "literal", value: ")", description: "\")\"" },
-        peg$c57 = function peg$c57(p, ps) {
-      return [p].concat(ps.map(function (p) {
-        return p[1];
-      }));
-    },
-        peg$c58 = "@",
-        peg$c59 = { type: "literal", value: "@", description: "\"@\"" },
-        peg$c60 = function peg$c60(r, o, p) {
-      return extend({ relation: 'equ' }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c61 = function peg$c61(r, o, p) {
-      return extend({ relation: 'equ', equalSpacing: true }, r || {}, o, p ? p[1] : {});
-    },
-        peg$c62 = "==",
-        peg$c63 = { type: "literal", value: "==", description: "\"==\"" },
-        peg$c64 = function peg$c64() {
-      return { relation: 'equ' };
-    },
-        peg$c65 = "<=",
-        peg$c66 = { type: "literal", value: "<=", description: "\"<=\"" },
-        peg$c67 = function peg$c67() {
-      return { relation: 'leq' };
-    },
-        peg$c68 = ">=",
-        peg$c69 = { type: "literal", value: ">=", description: "\">=\"" },
-        peg$c70 = function peg$c70() {
-      return { relation: 'geq' };
-    },
-        peg$c71 = /^[0-9]/,
-        peg$c72 = { type: "class", value: "[0-9]", description: "[0-9]" },
-        peg$c73 = function peg$c73(digits) {
-      return { priority: parseInt(digits.join(""), 10) };
-    },
-        peg$c74 = function peg$c74(n) {
-      return { constant: n };
-    },
-        peg$c75 = function peg$c75(n) {
-      return { constant: -n };
-    },
-        peg$c76 = "+",
-        peg$c77 = { type: "literal", value: "+", description: "\"+\"" },
-        peg$c78 = "%",
-        peg$c79 = { type: "literal", value: "%", description: "\"%\"" },
-        peg$c80 = function peg$c80(n) {
-      return { view: null, multiplier: n / 100 };
-    },
-        peg$c81 = function peg$c81(n) {
-      return { view: null, multiplier: n / -100 };
-    },
-        peg$c82 = function peg$c82(vn, a, m, c) {
-      return { view: vn.view, attribute: a ? a : undefined, multiplier: m ? m : 1, constant: c ? c : undefined };
-    },
-        peg$c83 = ".left",
-        peg$c84 = { type: "literal", value: ".left", description: "\".left\"" },
-        peg$c85 = function peg$c85() {
-      return 'left';
-    },
-        peg$c86 = ".right",
-        peg$c87 = { type: "literal", value: ".right", description: "\".right\"" },
-        peg$c88 = function peg$c88() {
-      return 'right';
-    },
-        peg$c89 = ".top",
-        peg$c90 = { type: "literal", value: ".top", description: "\".top\"" },
-        peg$c91 = function peg$c91() {
-      return 'top';
-    },
-        peg$c92 = ".bottom",
-        peg$c93 = { type: "literal", value: ".bottom", description: "\".bottom\"" },
-        peg$c94 = function peg$c94() {
-      return 'bottom';
-    },
-        peg$c95 = ".width",
-        peg$c96 = { type: "literal", value: ".width", description: "\".width\"" },
-        peg$c97 = function peg$c97() {
-      return 'width';
-    },
-        peg$c98 = ".height",
-        peg$c99 = { type: "literal", value: ".height", description: "\".height\"" },
-        peg$c100 = function peg$c100() {
-      return 'height';
-    },
-        peg$c101 = ".centerX",
-        peg$c102 = { type: "literal", value: ".centerX", description: "\".centerX\"" },
-        peg$c103 = function peg$c103() {
-      return 'centerX';
-    },
-        peg$c104 = ".centerY",
-        peg$c105 = { type: "literal", value: ".centerY", description: "\".centerY\"" },
-        peg$c106 = function peg$c106() {
-      return 'centerY';
-    },
-        peg$c107 = "/",
-        peg$c108 = { type: "literal", value: "/", description: "\"/\"" },
-        peg$c109 = function peg$c109(n) {
-      return 1 / n;
-    },
-        peg$c110 = "/+",
-        peg$c111 = { type: "literal", value: "/+", description: "\"/+\"" },
-        peg$c112 = "/-",
-        peg$c113 = { type: "literal", value: "/-", description: "\"/-\"" },
-        peg$c114 = function peg$c114(n) {
-      return -1 / n;
-    },
-        peg$c115 = "*",
-        peg$c116 = { type: "literal", value: "*", description: "\"*\"" },
-        peg$c117 = function peg$c117(n) {
-      return n;
-    },
-        peg$c118 = "*+",
-        peg$c119 = { type: "literal", value: "*+", description: "\"*+\"" },
-        peg$c120 = "*-",
-        peg$c121 = { type: "literal", value: "*-", description: "\"*-\"" },
-        peg$c122 = function peg$c122(n) {
-      return -n;
-    },
-        peg$c123 = /^[a-zA-Z_]/,
-        peg$c124 = { type: "class", value: "[a-zA-Z_]", description: "[a-zA-Z_]" },
-        peg$c125 = /^[a-zA-Z0-9_]/,
-        peg$c126 = { type: "class", value: "[a-zA-Z0-9_]", description: "[a-zA-Z0-9_]" },
-        peg$c127 = function peg$c127(f, v, r) {
-      return { view: f + v, range: r, $parserOffset: offset() };
-    },
-        peg$c128 = function peg$c128(f, v) {
-      return { view: f + v, $parserOffset: offset() };
-    },
-        peg$c129 = "..",
-        peg$c130 = { type: "literal", value: "..", description: "\"..\"" },
-        peg$c131 = function peg$c131(d) {
-      return parseInt(d);
-    },
-        peg$c132 = ".",
-        peg$c133 = { type: "literal", value: ".", description: "\".\"" },
-        peg$c134 = function peg$c134(digits, decimals) {
-      return parseFloat(digits.concat(".").concat(decimals).join(""), 10);
-    },
-        peg$c135 = function peg$c135(digits) {
-      return parseInt(digits.join(""), 10);
-    },
-        peg$currPos = 0,
-        peg$reportedPos = 0,
-        peg$cachedPos = 0,
-        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
-        peg$maxFailPos = 0,
-        peg$maxFailExpected = [],
-        peg$silentFails = 0,
-        peg$result;
-
-    if ("startRule" in options) {
-      if (!(options.startRule in peg$startRuleFunctions)) {
-        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
-      }
-
-      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
-    }
-
-    function text() {
-      return input.substring(peg$reportedPos, peg$currPos);
-    }
-
-    function offset() {
-      return peg$reportedPos;
-    }
-
-    function line() {
-      return peg$computePosDetails(peg$reportedPos).line;
-    }
-
-    function column() {
-      return peg$computePosDetails(peg$reportedPos).column;
-    }
-
-    function expected(description) {
-      throw peg$buildException(null, [{ type: "other", description: description }], peg$reportedPos);
-    }
-
-    function error(message) {
-      throw peg$buildException(message, null, peg$reportedPos);
-    }
-
-    function peg$computePosDetails(pos) {
-      function advance(details, startPos, endPos) {
-        var p, ch;
-
-        for (p = startPos; p < endPos; p++) {
-          ch = input.charAt(p);
-          if (ch === "\n") {
-            if (!details.seenCR) {
-              details.line++;
-            }
-            details.column = 1;
-            details.seenCR = false;
-          } else if (ch === "\r" || ch === '\u2028' || ch === '\u2029') {
-            details.line++;
-            details.column = 1;
-            details.seenCR = true;
-          } else {
-            details.column++;
-            details.seenCR = false;
-          }
-        }
-      }
-
-      if (peg$cachedPos !== pos) {
-        if (peg$cachedPos > pos) {
-          peg$cachedPos = 0;
-          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
-        }
-        advance(peg$cachedPosDetails, peg$cachedPos, pos);
-        peg$cachedPos = pos;
-      }
-
-      return peg$cachedPosDetails;
-    }
-
-    function peg$fail(expected) {
-      if (peg$currPos < peg$maxFailPos) {
-        return;
-      }
-
-      if (peg$currPos > peg$maxFailPos) {
-        peg$maxFailPos = peg$currPos;
-        peg$maxFailExpected = [];
-      }
-
-      peg$maxFailExpected.push(expected);
-    }
-
-    function peg$buildException(message, expected, pos) {
-      function cleanupExpected(expected) {
-        var i = 1;
-
-        expected.sort(function (a, b) {
-          if (a.description < b.description) {
-            return -1;
-          } else if (a.description > b.description) {
-            return 1;
-          } else {
-            return 0;
-          }
-        });
-
-        while (i < expected.length) {
-          if (expected[i - 1] === expected[i]) {
-            expected.splice(i, 1);
-          } else {
-            i++;
-          }
-        }
-      }
-
-      function buildMessage(expected, found) {
-        function stringEscape(s) {
-          function hex(ch) {
-            return ch.charCodeAt(0).toString(16).toUpperCase();
-          }
-
-          return s.replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\x08/g, '\\b').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\f/g, '\\f').replace(/\r/g, '\\r').replace(/[\x00-\x07\x0B\x0E\x0F]/g, function (ch) {
-            return '\\x0' + hex(ch);
-          }).replace(/[\x10-\x1F\x80-\xFF]/g, function (ch) {
-            return '\\x' + hex(ch);
-          }).replace(/[\u0180-\u0FFF]/g, function (ch) {
-            return '\\u0' + hex(ch);
-          }).replace(/[\u1080-\uFFFF]/g, function (ch) {
-            return '\\u' + hex(ch);
-          });
-        }
-
-        var expectedDescs = new Array(expected.length),
-            expectedDesc,
-            foundDesc,
-            i;
-
-        for (i = 0; i < expected.length; i++) {
-          expectedDescs[i] = expected[i].description;
-        }
-
-        expectedDesc = expected.length > 1 ? expectedDescs.slice(0, -1).join(", ") + " or " + expectedDescs[expected.length - 1] : expectedDescs[0];
-
-        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
-
-        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
-      }
-
-      var posDetails = peg$computePosDetails(pos),
-          found = pos < input.length ? input.charAt(pos) : null;
-
-      if (expected !== null) {
-        cleanupExpected(expected);
-      }
-
-      return new SyntaxError(message !== null ? message : buildMessage(expected, found), expected, found, pos, posDetails.line, posDetails.column);
-    }
-
-    function peg$parsevisualFormatStringExt() {
-      var s0;
-
-      s0 = peg$parsevisualFormatString();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsevisualFormatStringConstraintExpression();
-      }
-
-      return s0;
-    }
-
-    function peg$parsevisualFormatStringConstraintExpression() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c1) {
-        s1 = peg$c1;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c2);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseviewName();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseattributePredicate();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$parseattributePredicate();
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$parseattributePredicate();
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$parsecomments();
-              if (s5 === peg$FAILED) {
-                s5 = peg$c4;
-              }
-              if (s5 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c5(s2, s3, s4, s5);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseattributePredicate() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = peg$parseattribute();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateListWithParens();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c6(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsevisualFormatString() {
-      var s0, s1, s2, s3, s4, s5, s6, s7;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = peg$parseorientation();
-      if (s2 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 58) {
-          s3 = peg$c7;
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c8);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s2 = [s2, s3];
-          s1 = s2;
-        } else {
-          peg$currPos = s1;
-          s1 = peg$c0;
-        }
-      } else {
-        peg$currPos = s1;
-        s1 = peg$c0;
-      }
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = peg$parsesuperview();
-        if (s3 !== peg$FAILED) {
-          s4 = peg$parseconnection();
-          if (s4 !== peg$FAILED) {
-            s3 = [s3, s4];
-            s2 = s3;
-          } else {
-            peg$currPos = s2;
-            s2 = peg$c0;
-          }
-        } else {
-          peg$currPos = s2;
-          s2 = peg$c0;
-        }
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseviewGroup();
-          if (s3 !== peg$FAILED) {
-            s4 = [];
-            s5 = peg$currPos;
-            s6 = peg$parseconnection();
-            if (s6 !== peg$FAILED) {
-              s7 = peg$parseviewGroup();
-              if (s7 !== peg$FAILED) {
-                s6 = [s6, s7];
-                s5 = s6;
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            } else {
-              peg$currPos = s5;
-              s5 = peg$c0;
-            }
-            while (s5 !== peg$FAILED) {
-              s4.push(s5);
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parseviewGroup();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              s5 = peg$currPos;
-              s6 = peg$parseconnection();
-              if (s6 !== peg$FAILED) {
-                s7 = peg$parsesuperview();
-                if (s7 !== peg$FAILED) {
-                  s6 = [s6, s7];
-                  s5 = s6;
-                } else {
-                  peg$currPos = s5;
-                  s5 = peg$c0;
-                }
-              } else {
-                peg$currPos = s5;
-                s5 = peg$c0;
-              }
-              if (s5 === peg$FAILED) {
-                s5 = peg$c4;
-              }
-              if (s5 !== peg$FAILED) {
-                s6 = peg$parsecomments();
-                if (s6 === peg$FAILED) {
-                  s6 = peg$c4;
-                }
-                if (s6 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c9(s1, s2, s3, s4, s5, s6);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseorientation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c10) {
-        s1 = peg$c10;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c11);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c12();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 72) {
-          s1 = peg$c13;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c14);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c15();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 86) {
-            s1 = peg$c16;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c17);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c18();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 90) {
-              s1 = peg$c19;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c20);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c21();
-            }
-            s0 = s1;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsecomments() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (input.charCodeAt(peg$currPos) === 32) {
-        s2 = peg$c22;
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c23);
-        }
-      }
-      while (s2 !== peg$FAILED) {
-        s1.push(s2);
-        if (input.charCodeAt(peg$currPos) === 32) {
-          s2 = peg$c22;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c23);
-          }
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.substr(peg$currPos, 2) === peg$c24) {
-          s2 = peg$c24;
-          peg$currPos += 2;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c25);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (input.length > peg$currPos) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c26);
-            }
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            if (input.length > peg$currPos) {
-              s4 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c26);
-              }
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            s1 = [s1, s2, s3];
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsesuperview() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 124) {
-        s1 = peg$c27;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c28);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c29();
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseviewGroup() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 91) {
-        s1 = peg$c30;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c31);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseview();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parseview();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parseview();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 93) {
-              s4 = peg$c34;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c35);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c36(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseview() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      s1 = peg$parseviewNameRange();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicateListWithParens();
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsecascadedViews();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c37(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsecascadedViews() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 58) {
-        s1 = peg$c7;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c8);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = [];
-        s3 = peg$currPos;
-        s4 = peg$parseconnection();
-        if (s4 !== peg$FAILED) {
-          s5 = peg$parseviewGroup();
-          if (s5 !== peg$FAILED) {
-            s4 = [s4, s5];
-            s3 = s4;
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-        } else {
-          peg$currPos = s3;
-          s3 = peg$c0;
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            s3 = peg$currPos;
-            s4 = peg$parseconnection();
-            if (s4 !== peg$FAILED) {
-              s5 = peg$parseviewGroup();
-              if (s5 !== peg$FAILED) {
-                s4 = [s4, s5];
-                s3 = s4;
-              } else {
-                peg$currPos = s3;
-                s3 = peg$c0;
-              }
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parseconnection();
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c38(s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseconnection() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c39) {
-        s1 = peg$c39;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c40);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c41();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsepredicateList();
-          if (s2 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 45) {
-              s3 = peg$c42;
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c43);
-              }
-            }
-            if (s3 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c44(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 45) {
-            s1 = peg$c42;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c43);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c45();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 126) {
-              s1 = peg$c46;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c47);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              s2 = peg$parseequalSpacingPredicateList();
-              if (s2 !== peg$FAILED) {
-                if (input.charCodeAt(peg$currPos) === 126) {
-                  s3 = peg$c46;
-                  peg$currPos++;
-                } else {
-                  s3 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c47);
-                  }
-                }
-                if (s3 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c44(s2);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.charCodeAt(peg$currPos) === 126) {
-                s1 = peg$c46;
-                peg$currPos++;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c47);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c48();
-              }
-              s0 = s1;
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                s1 = peg$c49;
-                if (s1 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c50();
-                }
-                s0 = s1;
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateList() {
-      var s0;
-
-      s0 = peg$parsesimplePredicate();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parsepredicateListWithParens();
-      }
-
-      return s0;
-    }
-
-    function peg$parsesimplePredicate() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      s1 = peg$parsepercentage();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c51(s1);
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = peg$parsenumber();
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c52(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicateListWithParens() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c53;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c54);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsepredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parsepredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parsepredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c55;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c56);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c57(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsepredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c58;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c59);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c60(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseequalSpacingPredicateList() {
-      var s0, s1, s2, s3, s4, s5, s6;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 40) {
-        s1 = peg$c53;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c54);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseequalSpacingPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          s4 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 44) {
-            s5 = peg$c32;
-            peg$currPos++;
-          } else {
-            s5 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c33);
-            }
-          }
-          if (s5 !== peg$FAILED) {
-            s6 = peg$parseequalSpacingPredicate();
-            if (s6 !== peg$FAILED) {
-              s5 = [s5, s6];
-              s4 = s5;
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          } else {
-            peg$currPos = s4;
-            s4 = peg$c0;
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            s4 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 44) {
-              s5 = peg$c32;
-              peg$currPos++;
-            } else {
-              s5 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c33);
-              }
-            }
-            if (s5 !== peg$FAILED) {
-              s6 = peg$parseequalSpacingPredicate();
-              if (s6 !== peg$FAILED) {
-                s5 = [s5, s6];
-                s4 = s5;
-              } else {
-                peg$currPos = s4;
-                s4 = peg$c0;
-              }
-            } else {
-              peg$currPos = s4;
-              s4 = peg$c0;
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 41) {
-              s4 = peg$c55;
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c56);
-              }
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c57(s2, s3);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseequalSpacingPredicate() {
-      var s0, s1, s2, s3, s4, s5;
-
-      s0 = peg$currPos;
-      s1 = peg$parserelation();
-      if (s1 === peg$FAILED) {
-        s1 = peg$c4;
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseobjectOfPredicate();
-        if (s2 !== peg$FAILED) {
-          s3 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 64) {
-            s4 = peg$c58;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c59);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            s5 = peg$parsepriority();
-            if (s5 !== peg$FAILED) {
-              s4 = [s4, s5];
-              s3 = s4;
-            } else {
-              peg$currPos = s3;
-              s3 = peg$c0;
-            }
-          } else {
-            peg$currPos = s3;
-            s3 = peg$c0;
-          }
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c61(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserelation() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c62) {
-        s1 = peg$c62;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c63);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c64();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c65) {
-          s1 = peg$c65;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c66);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c67();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c68) {
-            s1 = peg$c68;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c69);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c70();
-          }
-          s0 = s1;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseobjectOfPredicate() {
-      var s0;
-
-      s0 = peg$parsepercentage();
-      if (s0 === peg$FAILED) {
-        s0 = peg$parseconstant();
-        if (s0 === peg$FAILED) {
-          s0 = peg$parseviewPredicate();
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepriority() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c71.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c72);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c73(s1);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseconstant() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c74(s1);
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c75(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 43) {
-            s1 = peg$c76;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c77);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c74(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsepercentage() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      s1 = peg$parsenumber();
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 37) {
-          s2 = peg$c78;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c79);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c80(s1);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 45) {
-          s1 = peg$c42;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c43);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            if (input.charCodeAt(peg$currPos) === 37) {
-              s3 = peg$c78;
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c79);
-              }
-            }
-            if (s3 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c81(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.charCodeAt(peg$currPos) === 43) {
-            s1 = peg$c76;
-            peg$currPos++;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c77);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              if (input.charCodeAt(peg$currPos) === 37) {
-                s3 = peg$c78;
-                peg$currPos++;
-              } else {
-                s3 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c79);
-                }
-              }
-              if (s3 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c80(s2);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewPredicate() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$parseviewName();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parseattribute();
-        if (s2 === peg$FAILED) {
-          s2 = peg$c4;
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsemultiplier();
-          if (s3 === peg$FAILED) {
-            s3 = peg$c4;
-          }
-          if (s3 !== peg$FAILED) {
-            s4 = peg$parseconstantExpr();
-            if (s4 === peg$FAILED) {
-              s4 = peg$c4;
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c82(s1, s2, s3, s4);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseattribute() {
-      var s0, s1;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 5) === peg$c83) {
-        s1 = peg$c83;
-        peg$currPos += 5;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c84);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        peg$reportedPos = s0;
-        s1 = peg$c85();
-      }
-      s0 = s1;
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 6) === peg$c86) {
-          s1 = peg$c86;
-          peg$currPos += 6;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c87);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c88();
-        }
-        s0 = s1;
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 4) === peg$c89) {
-            s1 = peg$c89;
-            peg$currPos += 4;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c90);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c91();
-          }
-          s0 = s1;
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.substr(peg$currPos, 7) === peg$c92) {
-              s1 = peg$c92;
-              peg$currPos += 7;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c93);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c94();
-            }
-            s0 = s1;
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.substr(peg$currPos, 6) === peg$c95) {
-                s1 = peg$c95;
-                peg$currPos += 6;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c96);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c97();
-              }
-              s0 = s1;
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                if (input.substr(peg$currPos, 7) === peg$c98) {
-                  s1 = peg$c98;
-                  peg$currPos += 7;
-                } else {
-                  s1 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c99);
-                  }
-                }
-                if (s1 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c100();
-                }
-                s0 = s1;
-                if (s0 === peg$FAILED) {
-                  s0 = peg$currPos;
-                  if (input.substr(peg$currPos, 8) === peg$c101) {
-                    s1 = peg$c101;
-                    peg$currPos += 8;
-                  } else {
-                    s1 = peg$FAILED;
-                    if (peg$silentFails === 0) {
-                      peg$fail(peg$c102);
-                    }
-                  }
-                  if (s1 !== peg$FAILED) {
-                    peg$reportedPos = s0;
-                    s1 = peg$c103();
-                  }
-                  s0 = s1;
-                  if (s0 === peg$FAILED) {
-                    s0 = peg$currPos;
-                    if (input.substr(peg$currPos, 8) === peg$c104) {
-                      s1 = peg$c104;
-                      peg$currPos += 8;
-                    } else {
-                      s1 = peg$FAILED;
-                      if (peg$silentFails === 0) {
-                        peg$fail(peg$c105);
-                      }
-                    }
-                    if (s1 !== peg$FAILED) {
-                      peg$reportedPos = s0;
-                      s1 = peg$c106();
-                    }
-                    s0 = s1;
-                  }
-                }
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parsemultiplier() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 47) {
-        s1 = peg$c107;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c108);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsenumber();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c109(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.substr(peg$currPos, 2) === peg$c110) {
-          s1 = peg$c110;
-          peg$currPos += 2;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c111);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c109(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-        if (s0 === peg$FAILED) {
-          s0 = peg$currPos;
-          if (input.substr(peg$currPos, 2) === peg$c112) {
-            s1 = peg$c112;
-            peg$currPos += 2;
-          } else {
-            s1 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c113);
-            }
-          }
-          if (s1 !== peg$FAILED) {
-            s2 = peg$parsenumber();
-            if (s2 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c114(s2);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-          if (s0 === peg$FAILED) {
-            s0 = peg$currPos;
-            if (input.charCodeAt(peg$currPos) === 42) {
-              s1 = peg$c115;
-              peg$currPos++;
-            } else {
-              s1 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c116);
-              }
-            }
-            if (s1 !== peg$FAILED) {
-              s2 = peg$parsenumber();
-              if (s2 !== peg$FAILED) {
-                peg$reportedPos = s0;
-                s1 = peg$c117(s2);
-                s0 = s1;
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c0;
-            }
-            if (s0 === peg$FAILED) {
-              s0 = peg$currPos;
-              if (input.substr(peg$currPos, 2) === peg$c118) {
-                s1 = peg$c118;
-                peg$currPos += 2;
-              } else {
-                s1 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c119);
-                }
-              }
-              if (s1 !== peg$FAILED) {
-                s2 = peg$parsenumber();
-                if (s2 !== peg$FAILED) {
-                  peg$reportedPos = s0;
-                  s1 = peg$c117(s2);
-                  s0 = s1;
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              } else {
-                peg$currPos = s0;
-                s0 = peg$c0;
-              }
-              if (s0 === peg$FAILED) {
-                s0 = peg$currPos;
-                if (input.substr(peg$currPos, 2) === peg$c120) {
-                  s1 = peg$c120;
-                  peg$currPos += 2;
-                } else {
-                  s1 = peg$FAILED;
-                  if (peg$silentFails === 0) {
-                    peg$fail(peg$c121);
-                  }
-                }
-                if (s1 !== peg$FAILED) {
-                  s2 = peg$parsenumber();
-                  if (s2 !== peg$FAILED) {
-                    peg$reportedPos = s0;
-                    s1 = peg$c122(s2);
-                    s0 = s1;
-                  } else {
-                    peg$currPos = s0;
-                    s0 = peg$c0;
-                  }
-                } else {
-                  peg$currPos = s0;
-                  s0 = peg$c0;
-                }
-              }
-            }
-          }
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseconstantExpr() {
-      var s0, s1, s2;
-
-      s0 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 45) {
-        s1 = peg$c42;
-        peg$currPos++;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c43);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parsenumber();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c122(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        if (input.charCodeAt(peg$currPos) === 43) {
-          s1 = peg$c76;
-          peg$currPos++;
-        } else {
-          s1 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c77);
-          }
-        }
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parsenumber();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c117(s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewNameRange() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c123.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c124);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c123.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c124);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c125.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c126);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parserange();
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c127(s1, s2, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = peg$currPos;
-        s2 = [];
-        if (peg$c123.test(input.charAt(peg$currPos))) {
-          s3 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c124);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            if (peg$c123.test(input.charAt(peg$currPos))) {
-              s3 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c124);
-              }
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          s2 = input.substring(s1, peg$currPos);
-        }
-        s1 = s2;
-        if (s1 !== peg$FAILED) {
-          s2 = peg$currPos;
-          s3 = [];
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-          while (s4 !== peg$FAILED) {
-            s3.push(s4);
-            if (peg$c125.test(input.charAt(peg$currPos))) {
-              s4 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s4 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c126);
-              }
-            }
-          }
-          if (s3 !== peg$FAILED) {
-            s3 = input.substring(s2, peg$currPos);
-          }
-          s2 = s3;
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c128(s1, s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      }
-
-      return s0;
-    }
-
-    function peg$parseviewName() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      s2 = [];
-      if (peg$c123.test(input.charAt(peg$currPos))) {
-        s3 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c124);
-        }
-      }
-      if (s3 !== peg$FAILED) {
-        while (s3 !== peg$FAILED) {
-          s2.push(s3);
-          if (peg$c123.test(input.charAt(peg$currPos))) {
-            s3 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s3 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c124);
-            }
-          }
-        }
-      } else {
-        s2 = peg$c0;
-      }
-      if (s2 !== peg$FAILED) {
-        s2 = input.substring(s1, peg$currPos);
-      }
-      s1 = s2;
-      if (s1 !== peg$FAILED) {
-        s2 = peg$currPos;
-        s3 = [];
-        if (peg$c125.test(input.charAt(peg$currPos))) {
-          s4 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c126);
-          }
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          if (peg$c125.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c126);
-            }
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          s3 = input.substring(s2, peg$currPos);
-        }
-        s2 = s3;
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c128(s1, s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parserange() {
-      var s0, s1, s2, s3;
-
-      s0 = peg$currPos;
-      if (input.substr(peg$currPos, 2) === peg$c129) {
-        s1 = peg$c129;
-        peg$currPos += 2;
-      } else {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c130);
-        }
-      }
-      if (s1 !== peg$FAILED) {
-        s2 = [];
-        if (peg$c71.test(input.charAt(peg$currPos))) {
-          s3 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c72);
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          while (s3 !== peg$FAILED) {
-            s2.push(s3);
-            if (peg$c71.test(input.charAt(peg$currPos))) {
-              s3 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s3 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c72);
-              }
-            }
-          }
-        } else {
-          s2 = peg$c0;
-        }
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c131(s2);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parsenumber() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = [];
-      if (peg$c71.test(input.charAt(peg$currPos))) {
-        s2 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
-          peg$fail(peg$c72);
-        }
-      }
-      if (s2 !== peg$FAILED) {
-        while (s2 !== peg$FAILED) {
-          s1.push(s2);
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s2 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s2 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-        }
-      } else {
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        if (input.charCodeAt(peg$currPos) === 46) {
-          s2 = peg$c132;
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c133);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = [];
-          if (peg$c71.test(input.charAt(peg$currPos))) {
-            s4 = input.charAt(peg$currPos);
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
-              peg$fail(peg$c72);
-            }
-          }
-          if (s4 !== peg$FAILED) {
-            while (s4 !== peg$FAILED) {
-              s3.push(s4);
-              if (peg$c71.test(input.charAt(peg$currPos))) {
-                s4 = input.charAt(peg$currPos);
-                peg$currPos++;
-              } else {
-                s4 = peg$FAILED;
-                if (peg$silentFails === 0) {
-                  peg$fail(peg$c72);
-                }
-              }
-            }
-          } else {
-            s3 = peg$c0;
-          }
-          if (s3 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c134(s1, s3);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c0;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = [];
-        if (peg$c71.test(input.charAt(peg$currPos))) {
-          s2 = input.charAt(peg$currPos);
-          peg$currPos++;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) {
-            peg$fail(peg$c72);
-          }
-        }
-        if (s2 !== peg$FAILED) {
-          while (s2 !== peg$FAILED) {
-            s1.push(s2);
-            if (peg$c71.test(input.charAt(peg$currPos))) {
-              s2 = input.charAt(peg$currPos);
-              peg$currPos++;
-            } else {
-              s2 = peg$FAILED;
-              if (peg$silentFails === 0) {
-                peg$fail(peg$c72);
-              }
-            }
-          }
-        } else {
-          s1 = peg$c0;
-        }
-        if (s1 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c135(s1);
-        }
-        s0 = s1;
-      }
-
-      return s0;
-    }
-
-    function extend(dst) {
-      for (var i = 1; i < arguments.length; i++) {
-        for (var k in arguments[i]) {
-          dst[k] = arguments[i][k];
-        }
-      }
-      return dst;
-    }
-
-    peg$result = peg$startRuleFunction();
-
-    if (peg$result !== peg$FAILED && peg$currPos === input.length) {
-      return peg$result;
-    } else {
-      if (peg$result !== peg$FAILED && peg$currPos < input.length) {
-        peg$fail({ type: "end", description: "end of input" });
-      }
-
-      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
-    }
-  }
-
-  return {
-    SyntaxError: SyntaxError,
-    parse: parse
-  };
-}();
-
-var Orientation = {
-  HORIZONTAL: 1,
-  VERTICAL: 2,
-  ZINDEX: 4
-};
-
-/**
- * Helper function that inserts equal spacers (~).
- * @private
- */
-function _processEqualSpacer(context, stackView) {
-
-  // Determine unique name for the spacer
-  context.equalSpacerIndex = context.equalSpacerIndex || 1;
-  var name = '_~' + context.lineIndex + ':' + context.equalSpacerIndex + '~';
-  if (context.equalSpacerIndex > 1) {
-
-    // Ensure that all spacers have the same width/height
-    context.constraints.push({
-      view1: '_~' + context.lineIndex + ':1~',
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: context.relation.relation || Relation.EQU,
-      view2: name,
-      attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      priority: context.relation.priority
-    });
-  }
-  context.equalSpacerIndex++;
-
-  // Enforce view/proportional width/height
-  if (context.relation.view || context.relation.multiplier && context.relation.multiplier !== 1) {
-    context.constraints.push({
-      view1: name,
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: context.relation.relation || Relation.EQU,
-      view2: context.relation.view,
-      attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      priority: context.relation.priority,
-      multiplier: context.relation.multiplier
-    });
-    context.relation.multiplier = undefined;
-  } else if (context.relation.constant) {
-    context.constraints.push({
-      view1: name,
-      attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-      relation: Relation.EQU,
-      view2: null,
-      attr2: Attribute.CONST,
-      priority: context.relation.priority,
-      constant: context.relation.constant
-    });
-    context.relation.constant = undefined;
-  }
-
-  // Add constraint
-  for (var i = 0; i < context.prevViews.length; i++) {
-    var prevView = context.prevViews[i];
-    switch (context.orientation) {
-      case Orientation.HORIZONTAL:
-        context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-        context.curAttr = Attribute.LEFT;
-        break;
-      case Orientation.VERTICAL:
-        context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-        context.curAttr = Attribute.TOP;
-        break;
-      case Orientation.ZINDEX:
-        context.prevAttr = Attribute.ZINDEX;
-        context.curAttr = Attribute.ZINDEX;
-        context.relation.constant = prevView !== stackView ? 'default' : 0;
-        break;
-    }
-    context.constraints.push({
-      view1: prevView,
-      attr1: context.prevAttr,
-      relation: context.relation.relation,
-      view2: name,
-      attr2: context.curAttr,
-      priority: context.relation.priority
-    });
-  }
-  context.prevViews = [name];
-}
-
-/**
- * Helper function that inserts proportional spacers (-12%-).
- * @private
- */
-function _processProportionalSpacer(context, stackView) {
-  context.proportionalSpacerIndex = context.proportionalSpacerIndex || 1;
-  var name = '_-' + context.lineIndex + ':' + context.proportionalSpacerIndex + '-';
-  context.proportionalSpacerIndex++;
-  context.constraints.push({
-    view1: name,
-    attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-    relation: context.relation.relation || Relation.EQU,
-    view2: context.relation.view, // or relative to the stackView... food for thought
-    attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,
-    priority: context.relation.priority,
-    multiplier: context.relation.multiplier
-  });
-  context.relation.multiplier = undefined;
-
-  // Add constraint
-  for (var i = 0; i < context.prevViews.length; i++) {
-    var prevView = context.prevViews[i];
-    switch (context.orientation) {
-      case Orientation.HORIZONTAL:
-        context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-        context.curAttr = Attribute.LEFT;
-        break;
-      case Orientation.VERTICAL:
-        context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-        context.curAttr = Attribute.TOP;
-        break;
-      case Orientation.ZINDEX:
-        context.prevAttr = Attribute.ZINDEX;
-        context.curAttr = Attribute.ZINDEX;
-        context.relation.constant = prevView !== stackView ? 'default' : 0;
-        break;
-    }
-    context.constraints.push({
-      view1: prevView,
-      attr1: context.prevAttr,
-      relation: context.relation.relation,
-      view2: name,
-      attr2: context.curAttr,
-      priority: context.relation.priority
-    });
-  }
-  context.prevViews = [name];
-}
-
-/**
- * In case of a stack-view, set constraints for opposite orientations
- * @private
- */
-function _processStackView(context, name, subView) {
-  var viewName = void 0;
-  for (var orientation = 1; orientation <= 4; orientation *= 2) {
-    if (subView.orientations & orientation && subView.stack.orientation !== orientation && !(subView.stack.processedOrientations & orientation)) {
-      subView.stack.processedOrientations = subView.stack.processedOrientations | orientation;
-      viewName = viewName || {
-        name: name,
-        type: 'stack'
-      };
-      for (var i = 0, j = subView.stack.subViews.length; i < j; i++) {
-        if (orientation === Orientation.ZINDEX) {
-          context.constraints.push({
-            view1: viewName,
-            attr1: Attribute.ZINDEX,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: Attribute.ZINDEX
-          });
-        } else {
-          context.constraints.push({
-            view1: viewName,
-            attr1: orientation === Orientation.VERTICAL ? Attribute.HEIGHT : Attribute.WIDTH,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: orientation === Orientation.VERTICAL ? Attribute.HEIGHT : Attribute.WIDTH
-          });
-          context.constraints.push({
-            view1: viewName,
-            attr1: orientation === Orientation.VERTICAL ? Attribute.TOP : Attribute.LEFT,
-            relation: Relation.EQU,
-            view2: subView.stack.subViews[i],
-            attr2: orientation === Orientation.VERTICAL ? Attribute.TOP : Attribute.LEFT
-          });
-        }
-      }
-    }
-  }
-}
-
-/**
- * Recursive helper function converts a view-name and a range to a series
- * of view-names (e.g. [child1, child2, child3, ...]).
- * @private
- */
-function _getRange(name, range) {
-  if (range === true) {
-    range = name.match(/\.\.\d+$/);
-    if (range) {
-      name = name.substring(0, name.length - range[0].length);
-      range = parseInt(range[0].substring(2));
-    }
-  }
-  if (!range) {
-    return [name];
-  }
-  var start = name.match(/\d+$/);
-  var res = [];
-  var i;
-  if (start) {
-    name = name.substring(0, name.length - start[0].length);
-    for (i = parseInt(start); i <= range; i++) {
-      res.push(name + i);
-    }
-  } else {
-    res.push(name);
-    for (i = 2; i <= range; i++) {
-      res.push(name + i);
-    }
-  }
-  return res;
-}
-
-/**
- * Recursive helper function that processes the cascaded data.
- * @private
- */
-function _processCascade(context, cascade, parentItem) {
-  var stackView = parentItem ? parentItem.view : null;
-  var subViews = [];
-  var curViews = [];
-  var subView = void 0;
-  if (stackView) {
-    cascade.push({ view: stackView });
-    curViews.push(stackView);
-  }
-  for (var i = 0; i < cascade.length; i++) {
-    var item = cascade[i];
-    if (!Array.isArray(item) && item.hasOwnProperty('view') || Array.isArray(item) && item[0].view && !item[0].relation) {
-      var items = Array.isArray(item) ? item : [item];
-      for (var z = 0; z < items.length; z++) {
-        item = items[z];
-        var viewRange = item === ',' ? [] : item.view ? _getRange(item.view, item.range) : [null];
-        for (var r = 0; r < viewRange.length; r++) {
-          var curView = viewRange[r];
-          curViews.push(curView);
-
-          //
-          // Add this view to the collection of subViews
-          //
-          if (curView !== stackView) {
-            subViews.push(curView);
-            subView = context.subViews[curView];
-            if (!subView) {
-              subView = { orientations: 0 };
-              context.subViews[curView] = subView;
-            }
-            subView.orientations = subView.orientations | context.orientation;
-            if (subView.stack) {
-              _processStackView(context, curView, subView);
-            }
-          }
-
-          //
-          // Process the relationship between this and the previous views
-          //
-          if (context.prevViews !== undefined && curView !== undefined && context.relation) {
-            if (context.relation.relation !== 'none') {
-              for (var p = 0; p < context.prevViews.length; p++) {
-                var prevView = context.prevViews[p];
-                switch (context.orientation) {
-                  case Orientation.HORIZONTAL:
-                    context.prevAttr = prevView !== stackView ? Attribute.RIGHT : Attribute.LEFT;
-                    context.curAttr = curView !== stackView ? Attribute.LEFT : Attribute.RIGHT;
-                    break;
-                  case Orientation.VERTICAL:
-                    context.prevAttr = prevView !== stackView ? Attribute.BOTTOM : Attribute.TOP;
-                    context.curAttr = curView !== stackView ? Attribute.TOP : Attribute.BOTTOM;
-                    break;
-                  case Orientation.ZINDEX:
-                    context.prevAttr = Attribute.ZINDEX;
-                    context.curAttr = Attribute.ZINDEX;
-                    context.relation.constant = !prevView ? 0 : context.relation.constant || 'default';
-                    break;
-                }
-                context.constraints.push({
-                  view1: prevView,
-                  attr1: context.prevAttr,
-                  relation: context.relation.relation,
-                  view2: curView,
-                  attr2: context.curAttr,
-                  multiplier: context.relation.multiplier,
-                  constant: context.relation.constant === 'default' || !context.relation.constant ? context.relation.constant : -context.relation.constant,
-                  priority: context.relation.priority
-                });
-              }
-            }
-          }
-
-          //
-          // Process view size constraints
-          //
-          var constraints = item.constraints;
-          if (constraints) {
-            for (var n = 0; n < constraints.length; n++) {
-              context.prevAttr = context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT;
-              context.curAttr = constraints[n].view || constraints[n].multiplier ? constraints[n].attribute || context.prevAttr : constraints[n].variable ? Attribute.VARIABLE : Attribute.CONST;
-              context.constraints.push({
-                view1: curView,
-                attr1: context.prevAttr,
-                relation: constraints[n].relation,
-                view2: constraints[n].view,
-                attr2: context.curAttr,
-                multiplier: constraints[n].multiplier,
-                constant: constraints[n].constant,
-                priority: constraints[n].priority
-              });
-            }
-          }
-
-          //
-          // Process cascaded data (child stack-views)
-          //
-          if (item.cascade) {
-            _processCascade(context, item.cascade, item);
-          }
-        }
-      }
-    } else if (item !== ',') {
-      context.prevViews = curViews;
-      curViews = [];
-      context.relation = item[0];
-      if (context.prevViews !== undefined) {
-        if (context.relation.equalSpacing) {
-          _processEqualSpacer(context, stackView);
-        }
-        if (context.relation.multiplier) {
-          _processProportionalSpacer(context, stackView);
-        }
-      }
-    }
-  }
-
-  if (stackView) {
-    subView = context.subViews[stackView];
-    if (!subView) {
-      subView = { orientations: context.orientation };
-      context.subViews[stackView] = subView;
-    } else if (subView.stack) {
-      var err = new Error('A stack named "' + stackView + '" has already been created');
-      err.column = parentItem.$parserOffset + 1;
-      throw err;
-    }
-    subView.stack = {
-      orientation: context.orientation,
-      processedOrientations: context.orientation,
-      subViews: subViews
-    };
-    _processStackView(context, stackView, subView);
-  }
-}
-
-var metaInfoCategories = ['viewport', 'spacing', 'colors', 'shapes', 'widths', 'heights'];
-
-/**
- * VisualFormat
- *
- * @namespace VisualFormat
- */
-
-var VisualFormat = function () {
-  function VisualFormat() {
-    _classCallCheck(this, VisualFormat);
-  }
-
-  _createClass(VisualFormat, null, [{
-    key: 'parseLine',
-
-
-    /**
-     * Parses a single line of vfl into an array of constraint definitions.
-     *
-     * When the visual-format could not be succesfully parsed an exception is thrown containing
-     * additional info about the parse error and column position.
-     *
-     * @param {String} visualFormat Visual format string (cannot contain line-endings!).
-     * @param {Object} [options] Configuration options.
-     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).
-     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).
-     * @param {Number} [options.lineIndex] Line-index used when auto generating equal-spacing constraints.
-     * @return {Array} Array of constraint definitions.
-     */
-    value: function parseLine(visualFormat, options) {
-      if (visualFormat.length === 0 || options && options.extended && visualFormat.indexOf('//') === 0) {
-        return [];
-      }
-      var res = options && options.extended ? parserExt.parse(visualFormat) : parser.parse(visualFormat);
-      if (options && options.outFormat === 'raw') {
-        return [res];
-      }
-      var context = {
-        constraints: [],
-        lineIndex: (options ? options.lineIndex : undefined) || 1,
-        subViews: (options ? options.subViews : undefined) || {}
-      };
-      if (res.type === 'attribute') {
-        for (var n = 0; n < res.attributes.length; n++) {
-          var attr = res.attributes[n];
-          for (var m = 0; m < attr.predicates.length; m++) {
-            var predicate = attr.predicates[m];
-            context.constraints.push({
-              view1: res.view,
-              attr1: attr.attr,
-              relation: predicate.relation,
-              view2: predicate.view,
-              attr2: predicate.attribute || attr.attr,
-              multiplier: predicate.multiplier,
-              constant: predicate.constant,
-              priority: predicate.priority
-            });
-          }
-        }
-      } else {
-        switch (res.orientation) {
-          case 'horizontal':
-            context.orientation = Orientation.HORIZONTAL;
-            context.horizontal = true;
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'vertical':
-            context.orientation = Orientation.VERTICAL;
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'horzvert':
-            context.orientation = Orientation.HORIZONTAL;
-            context.horizontal = true;
-            _processCascade(context, res.cascade, null);
-            context = {
-              constraints: context.constraints,
-              lineIndex: context.lineIndex,
-              subViews: context.subViews,
-              orientation: Orientation.VERTICAL
-            };
-            _processCascade(context, res.cascade, null);
-            break;
-          case 'zIndex':
-            context.orientation = Orientation.ZINDEX;
-            _processCascade(context, res.cascade, null);
-            break;
-        }
-      }
-      return context.constraints;
-    }
-
-    /**
-     * Parses one or more visual format strings into an array of constraint definitions.
-     *
-     * When the visual-format could not be succesfully parsed an exception is thrown containing
-     * additional info about the parse error and column position.
-     *
-     * @param {String|Array} visualFormat One or more visual format strings.
-     * @param {Object} [options] Configuration options.
-     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).
-     * @param {Boolean} [options.strict] When set to false trims any leading/trailing spaces and ignores empty lines (default: true).
-     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\n`).
-     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).
-     * @return {Array} Array of constraint definitions.
-     */
-
-  }, {
-    key: 'parse',
-    value: function parse(visualFormat, options) {
-      var lineSeparator = options && options.lineSeparator ? options.lineSeparator : '\n';
-      if (!Array.isArray(visualFormat) && visualFormat.indexOf(lineSeparator) < 0) {
-        try {
-          return this.parseLine(visualFormat, options);
-        } catch (err) {
-          err.source = visualFormat;
-          throw err;
-        }
-      }
-
-      // Decompose visual-format into an array of strings, and within those strings
-      // search for line-endings, and treat each line as a seperate visual-format.
-      visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];
-      var lines = void 0;
-      var constraints = [];
-      var lineIndex = 0;
-      var line = void 0;
-      var parseOptions = {
-        lineIndex: lineIndex,
-        extended: options && options.extended,
-        strict: options && options.strict !== undefined ? options.strict : true,
-        outFormat: options ? options.outFormat : undefined,
-        subViews: {}
-      };
-      try {
-        for (var i = 0; i < visualFormat.length; i++) {
-          lines = visualFormat[i].split(lineSeparator);
-          for (var j = 0; j < lines.length; j++) {
-            line = lines[j];
-            lineIndex++;
-            parseOptions.lineIndex = lineIndex;
-            if (!parseOptions.strict) {
-              line = line.trim();
-            }
-            if (parseOptions.strict || line.length) {
-              constraints = constraints.concat(this.parseLine(line, parseOptions));
-            }
-          }
-        }
-      } catch (err) {
-        err.source = line;
-        err.line = lineIndex;
-        throw err;
-      }
-      return constraints;
-    }
-
-    /**
-     * Parses meta information from the comments in the VFL.
-     *
-     * Additional meta information can be specified in the comments
-     * for previewing and rendering purposes. For instance, the view-port
-     * aspect-ratio, sub-view widths and colors, can be specified. The
-     * following example renders three colored circles in the visual-format editor:
-     *
-     * ```vfl
-     * //viewport aspect-ratio:3/1 max-height:300
-     * //colors red:#FF0000 green:#00FF00 blue:#0000FF
-     * //shapes red:circle green:circle blue:circle
-     * H:|-[row:[red(green,blue)]-[green]-[blue]]-|
-     * V:|[row]|
-     * ```
-     *
-     * Supported categories and properties:
-     *
-     * |Category|Property|Example|
-     * |--------|--------|-------|
-     * |`viewport`|`aspect-ratio:{width}/{height}`|`//viewport aspect-ratio:16/9`|
-     * ||`width:[{number}/intrinsic]`|`//viewport width:10`|
-     * ||`height:[{number}/intrinsic]`|`//viewport height:intrinsic`|
-     * ||`min-width:{number}`|
-     * ||`max-width:{number}`|
-     * ||`min-height:{number}`|
-     * ||`max-height:{number}`|
-     * |`spacing`|`[{number}/array]`|`//spacing:8` or `//spacing:[10, 20, 5]`|
-     * |`widths`|`{view-name}:[{number}/intrinsic]`|`//widths subview1:100`|
-     * |`heights`|`{view-name}:[{number}/intrinsic]`|`//heights subview1:intrinsic`|
-     * |`colors`|`{view-name}:{color}`|`//colors redview:#FF0000 blueview:#00FF00`|
-     * |`shapes`|`{view-name}:[circle/square]`|`//shapes avatar:circle`|
-     *
-     * @param {String|Array} visualFormat One or more visual format strings.
-     * @param {Object} [options] Configuration options.
-     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\n`).
-     * @param {String} [options.prefix] When specified, also processes the categories using that prefix (e.g. "-dev-viewport max-height:10").
-     * @return {Object} meta-info
-     */
-
-  }, {
-    key: 'parseMetaInfo',
-    value: function parseMetaInfo(visualFormat, options) {
-      var lineSeparator = options && options.lineSeparator ? options.lineSeparator : '\n';
-      var prefix = options ? options.prefix : undefined;
-      visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];
-      var metaInfo = {};
-      var key;
-      for (var k = 0; k < visualFormat.length; k++) {
-        var lines = visualFormat[k].split(lineSeparator);
-        for (var i = 0; i < lines.length; i++) {
-          var line = lines[i];
-          for (var c = 0; c < metaInfoCategories.length; c++) {
-            for (var s = 0; s < (prefix ? 2 : 1); s++) {
-              var category = metaInfoCategories[c];
-              var prefixedCategory = (s === 0 ? '' : prefix) + category;
-              if (line.indexOf('//' + prefixedCategory + ' ') === 0) {
-                var items = line.substring(3 + prefixedCategory.length).split(' ');
-                for (var j = 0; j < items.length; j++) {
-                  metaInfo[category] = metaInfo[category] || {};
-                  var item = items[j].split(':');
-                  var names = _getRange(item[0], true);
-                  for (var r = 0; r < names.length; r++) {
-                    metaInfo[category][names[r]] = item.length > 1 ? item[1] : '';
-                  }
-                }
-              } else if (line.indexOf('//' + prefixedCategory + ':') === 0) {
-                metaInfo[category] = line.substring(3 + prefixedCategory.length);
-              }
-            }
-          }
-        }
-      }
-      if (metaInfo.viewport) {
-        var viewport = metaInfo.viewport;
-        var aspectRatio = viewport['aspect-ratio'];
-        if (aspectRatio) {
-          aspectRatio = aspectRatio.split('/');
-          viewport['aspect-ratio'] = parseInt(aspectRatio[0]) / parseInt(aspectRatio[1]);
-        }
-        if (viewport.height !== undefined) {
-          viewport.height = viewport.height === 'intrinsic' ? true : parseInt(viewport.height);
-        }
-        if (viewport.width !== undefined) {
-          viewport.width = viewport.width === 'intrinsic' ? true : parseInt(viewport.width);
-        }
-        if (viewport['max-height'] !== undefined) {
-          viewport['max-height'] = parseInt(viewport['max-height']);
-        }
-        if (viewport['max-width'] !== undefined) {
-          viewport['max-width'] = parseInt(viewport['max-width']);
-        }
-        if (viewport['min-height'] !== undefined) {
-          viewport['min-height'] = parseInt(viewport['min-height']);
-        }
-        if (viewport['min-width'] !== undefined) {
-          viewport['min-width'] = parseInt(viewport['min-width']);
-        }
-      }
-      if (metaInfo.widths) {
-        for (key in metaInfo.widths) {
-          var width = metaInfo.widths[key] === 'intrinsic' ? true : parseInt(metaInfo.widths[key]);
-          metaInfo.widths[key] = width;
-          if (width === undefined || isNaN(width)) {
-            delete metaInfo.widths[key];
-          }
-        }
-      }
-      if (metaInfo.heights) {
-        for (key in metaInfo.heights) {
-          var height = metaInfo.heights[key] === 'intrinsic' ? true : parseInt(metaInfo.heights[key]);
-          metaInfo.heights[key] = height;
-          if (height === undefined || isNaN(height)) {
-            delete metaInfo.heights[key];
-          }
-        }
-      }
-      if (metaInfo.spacing) {
-        var value = JSON.parse(metaInfo.spacing);
-        metaInfo.spacing = value;
-        if (Array.isArray(value)) {
-          for (var sIdx = 0, len = value.length; sIdx < len; sIdx++) {
-            if (isNaN(value[sIdx])) {
-              delete metaInfo.spacing;
-              break;
-            }
-          }
-        } else if (value === undefined || isNaN(value)) {
-          delete metaInfo.spacing;
-        }
-      }
-      return metaInfo;
-    }
-  }]);
-
-  return VisualFormat;
-}();
-
-/**
- * A SubView is automatically generated when constraints are added to a View.
- *
- * @namespace SubView
- */
-
-
-var SubView = function () {
-  function SubView(options) {
-    _classCallCheck(this, SubView);
-
-    this._name = options.name;
-    this._type = options.type;
-    this._solver = options.solver;
-    this._attr = {};
-    if (!options.name) {
-      if (false) {
-        this._attr[Attribute.LEFT] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.LEFT], c.Strength.required));
-        this._attr[Attribute.TOP] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.TOP], c.Strength.required));
-        this._attr[Attribute.ZINDEX] = new c.Variable();
-        this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.ZINDEX], c.Strength.required));
-      } else {
-        this._attr[Attribute.LEFT] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.LEFT], kiwi.Operator.Eq, 0));
-        this._attr[Attribute.TOP] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.TOP], kiwi.Operator.Eq, 0));
-        this._attr[Attribute.ZINDEX] = new kiwi.Variable();
-        this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.ZINDEX], kiwi.Operator.Eq, 0));
-      }
-    }
-  }
-
-  _createClass(SubView, [{
-    key: 'toJSON',
-    value: function toJSON() {
-      return {
-        name: this.name,
-        left: this.left,
-        top: this.top,
-        width: this.width,
-        height: this.height
-      };
-    }
-  }, {
-    key: 'toString',
-    value: function toString() {
-      JSON.stringify(this.toJSON(), undefined, 2);
-    }
-
-    /**
-     * Name of the sub-view.
-     * @readonly
-     * @type {String}
-     */
-
-  }, {
-    key: 'getValue',
-
-
-    /**
-     * Gets the value of one of the attributes.
-     *
-     * @param {String|Attribute} attr Attribute name (e.g. 'right', 'centerY', Attribute.TOP).
-     * @return {Number} value or `undefined`
-     */
-    value: function getValue(attr) {
-      return this._attr[attr] ? this._attr[attr].value() : undefined;
-    }
-
-    /**
-     * @private
-     */
-
-  }, {
-    key: '_getAttr',
-    value: function _getAttr(attr) {
-      if (this._attr[attr]) {
-        return this._attr[attr];
-      }
-      this._attr[attr] = false ? new c.Variable() : new kiwi.Variable();
-      switch (attr) {
-        case Attribute.RIGHT:
-          this._getAttr(Attribute.LEFT);
-          this._getAttr(Attribute.WIDTH);
-          if (false) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], this._attr[Attribute.WIDTH])));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH])));
-          }
-          break;
-        case Attribute.BOTTOM:
-          this._getAttr(Attribute.TOP);
-          this._getAttr(Attribute.HEIGHT);
-          if (false) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], this._attr[Attribute.HEIGHT])));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT])));
-          }
-          break;
-        case Attribute.CENTERX:
-          this._getAttr(Attribute.LEFT);
-          this._getAttr(Attribute.WIDTH);
-          if (false) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], c.divide(this._attr[Attribute.WIDTH], 2))));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH].divide(2))));
-          }
-          break;
-        case Attribute.CENTERY:
-          this._getAttr(Attribute.TOP);
-          this._getAttr(Attribute.HEIGHT);
-          if (false) {
-            this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], c.divide(this._attr[Attribute.HEIGHT], 2))));
-          } else {
-            this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT].divide(2))));
-          }
-          break;
-      }
-      if (!false) {
-        this._solver.updateVariables();
-      }
-      return this._attr[attr];
-    }
-
-    /**
-     * @private
-     */
-
-  }, {
-    key: '_getAttrValue',
-    value: function _getAttrValue(attr) {
-      if (false) {
-        return this._getAttr(attr).value;
-      } else {
-        return this._getAttr(attr).value();
-      }
-    }
-  }, {
-    key: 'name',
-    get: function get() {
-      return this._name;
-    }
-
-    /**
-     * Left value (`Attribute.LEFT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'left',
-    get: function get() {
-      return this._getAttrValue(Attribute.LEFT);
-    }
-
-    /**
-     * Right value (`Attribute.RIGHT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'right',
-    get: function get() {
-      return this._getAttrValue(Attribute.RIGHT);
-    }
-
-    /**
-     * Width value (`Attribute.WIDTH`).
-     * @type {Number}
-     */
-
-  }, {
-    key: 'width',
-    get: function get() {
-      return this._getAttrValue(Attribute.WIDTH);
-    }
-
-    /**
-     * Height value (`Attribute.HEIGHT`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'height',
-    get: function get() {
-      return this._getAttrValue(Attribute.HEIGHT);
-    }
-
-    /**
-     * Intrinsic width of the sub-view.
-     *
-     * Use this property to explicitely set the width of the sub-view, e.g.:
-     * ```javascript
-     * var view = new AutoLayout.View(AutoLayout.VisualFormat.parse('|[child1][child2]|'), {
-     *   width: 500
-     * });
-     * view.subViews.child1.intrinsicWidth = 100;
-     * console.log('child2 width: ' + view.subViews.child2.width); // 400
-     * ```
-     *
-     * @type {Number}
-     */
-
-  }, {
-    key: 'intrinsicWidth',
-    get: function get() {
-      return this._intrinsicWidth;
-    },
-    set: function set(value) {
-      if (value !== undefined && value !== this._intrinsicWidth) {
-        var attr = this._getAttr(Attribute.WIDTH);
-        if (this._intrinsicWidth === undefined) {
-          if (false) {
-            this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-          } else {
-            this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-          }
-        }
-        this._intrinsicWidth = value;
-        this._solver.suggestValue(attr, value);
-        if (false) {
-          this._solver.resolve();
-        } else {
-          this._solver.updateVariables();
-        }
-      }
-    }
-
-    /**
-     * Intrinsic height of the sub-view.
-     *
-     * See `intrinsicWidth`.
-     *
-     * @type {Number}
-     */
-
-  }, {
-    key: 'intrinsicHeight',
-    get: function get() {
-      return this._intrinsicHeight;
-    },
-    set: function set(value) {
-      if (value !== undefined && value !== this._intrinsicHeight) {
-        var attr = this._getAttr(Attribute.HEIGHT);
-        if (this._intrinsicHeight === undefined) {
-          if (false) {
-            this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-          } else {
-            this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-          }
-        }
-        this._intrinsicHeight = value;
-        this._solver.suggestValue(attr, value);
-        if (false) {
-          this._solver.resolve();
-        } else {
-          this._solver.updateVariables();
-        }
-      }
-    }
-
-    /**
-     * Top value (`Attribute.TOP`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'top',
-    get: function get() {
-      return this._getAttrValue(Attribute.TOP);
-    }
-
-    /**
-     * Bottom value (`Attribute.BOTTOM`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'bottom',
-    get: function get() {
-      return this._getAttrValue(Attribute.BOTTOM);
-    }
-
-    /**
-     * Horizontal center (`Attribute.CENTERX`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'centerX',
-    get: function get() {
-      return this._getAttrValue(Attribute.CENTERX);
-    }
-
-    /**
-     * Vertical center (`Attribute.CENTERY`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'centerY',
-    get: function get() {
-      return this._getAttrValue(Attribute.CENTERY);
-    }
-
-    /**
-     * Z-index (`Attribute.ZINDEX`).
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'zIndex',
-    get: function get() {
-      return this._getAttrValue(Attribute.ZINDEX);
-    }
-
-    /**
-     * Returns the type of the sub-view.
-     * @readonly
-     * @type {String}
-     */
-
-  }, {
-    key: 'type',
-    get: function get() {
-      return this._type;
-    }
-  }]);
-
-  return SubView;
-}();
-
-var defaultPriorityStrength = false ? new c.Strength('defaultPriority', 0, 1000, 1000) : kiwi.Strength.create(0, 1000, 1000);
-
-function _getConst(name, value) {
-  if (false) {
-    var vr = new c.Variable({ value: value });
-    this._solver.addConstraint(new c.StayConstraint(vr, c.Strength.required, 0));
-    return vr;
-  } else {
-    var _vr = new kiwi.Variable();
-    this._solver.addConstraint(new kiwi.Constraint(_vr, kiwi.Operator.Eq, value));
-    return _vr;
-  }
-}
-
-function _getSubView(viewName) {
-  if (!viewName) {
-    return this._parentSubView;
-  } else if (viewName.name) {
-    this._subViews[viewName.name] = this._subViews[viewName.name] || new SubView({
-      name: viewName.name,
-      solver: this._solver
-    });
-    this._subViews[viewName.name]._type = this._subViews[viewName.name]._type || viewName.type;
-    return this._subViews[viewName.name];
-  } else {
-    this._subViews[viewName] = this._subViews[viewName] || new SubView({
-      name: viewName,
-      solver: this._solver
-    });
-    return this._subViews[viewName];
-  }
-}
-
-function _getSpacing(constraint) {
-  var index = 4;
-  if (!constraint.view1 && constraint.attr1 === 'left') {
-    index = 3;
-  } else if (!constraint.view1 && constraint.attr1 === 'top') {
-    index = 0;
-  } else if (!constraint.view2 && constraint.attr2 === 'right') {
-    index = 1;
-  } else if (!constraint.view2 && constraint.attr2 === 'bottom') {
-    index = 2;
-  } else {
-    switch (constraint.attr1) {
-      case 'left':
-      case 'right':
-      case 'centerX':
-      case 'leading':
-      case 'trailing':
-        index = 4;
-        break;
-      case 'zIndex':
-        index = 6;
-        break;
-      default:
-        index = 5;
-    }
-  }
-  this._spacingVars = this._spacingVars || new Array(7);
-  this._spacingExpr = this._spacingExpr || new Array(7);
-  if (!this._spacingVars[index]) {
-    if (false) {
-      this._spacingVars[index] = new c.Variable();
-      this._solver.addEditVar(this._spacingVars[index]);
-      this._spacingExpr[index] = c.minus(0, this._spacingVars[index]);
-    } else {
-      this._spacingVars[index] = new kiwi.Variable();
-      this._solver.addEditVariable(this._spacingVars[index], kiwi.Strength.create(999, 1000, 1000));
-      this._spacingExpr[index] = this._spacingVars[index].multiply(-1);
-    }
-    this._solver.suggestValue(this._spacingVars[index], this._spacing[index]);
-  }
-  return this._spacingExpr[index];
-}
-
-function _addConstraint(constraint) {
-  //this.constraints.push(constraint);
-  var relation = void 0;
-  var multiplier = constraint.multiplier !== undefined ? constraint.multiplier : 1;
-  var constant = constraint.constant !== undefined ? constraint.constant : 0;
-  if (constant === 'default') {
-    constant = _getSpacing.call(this, constraint);
-  }
-  var attr1 = _getSubView.call(this, constraint.view1)._getAttr(constraint.attr1);
-  var attr2 = void 0;
-  if (false) {
-    if (constraint.attr2 === Attribute.CONST) {
-      attr2 = _getConst.call(this, undefined, constraint.constant);
-    } else {
-      attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);
-      if (multiplier !== 1 && constant) {
-        attr2 = c.plus(c.times(attr2, multiplier), constant);
-      } else if (constant) {
-        attr2 = c.plus(attr2, constant);
-      } else if (multiplier !== 1) {
-        attr2 = c.times(attr2, multiplier);
-      }
-    }
-    var strength = constraint.priority !== undefined && constraint.priority < 1000 ? new c.Strength('priority', 0, constraint.priority, 1000) : defaultPriorityStrength;
-    switch (constraint.relation) {
-      case Relation.EQU:
-        relation = new c.Equation(attr1, attr2, strength);
-        break;
-      case Relation.GEQ:
-        relation = new c.Inequality(attr1, c.GEQ, attr2, strength);
-        break;
-      case Relation.LEQ:
-        relation = new c.Inequality(attr1, c.LEQ, attr2, strength);
-        break;
-      default:
-        throw 'Invalid relation specified: ' + constraint.relation;
-    }
-  } else {
-    if (constraint.attr2 === Attribute.CONST) {
-      attr2 = _getConst.call(this, undefined, constraint.constant);
-    } else {
-      attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);
-      if (multiplier !== 1 && constant) {
-        attr2 = attr2.multiply(multiplier).plus(constant);
-      } else if (constant) {
-        attr2 = attr2.plus(constant);
-      } else if (multiplier !== 1) {
-        attr2 = attr2.multiply(multiplier);
-      }
-    }
-    var _strength = constraint.priority !== undefined && constraint.priority < 1000 ? kiwi.Strength.create(0, constraint.priority, 1000) : defaultPriorityStrength;
-    switch (constraint.relation) {
-      case Relation.EQU:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Eq, attr2, _strength);
-        break;
-      case Relation.GEQ:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Ge, attr2, _strength);
-        break;
-      case Relation.LEQ:
-        relation = new kiwi.Constraint(attr1, kiwi.Operator.Le, attr2, _strength);
-        break;
-      default:
-        throw 'Invalid relation specified: ' + constraint.relation;
-    }
-  }
-  this._solver.addConstraint(relation);
-}
-
-function _compareSpacing(old, newz) {
-  if (old === newz) {
-    return true;
-  }
-  if (!old || !newz) {
-    return false;
-  }
-  for (var i = 0; i < 7; i++) {
-    if (old[i] !== newz[i]) {
-      return false;
-    }
-  }
-  return true;
-}
-
-/**
- * AutoLayoutJS API reference.
- *
- * ### Index
- *
- * |Entity|Type|Description|
- * |---|---|---|
- * |[AutoLayout](#autolayout)|`namespace`|Top level AutoLayout object.|
- * |[VisualFormat](#autolayoutvisualformat--object)|`namespace`|Parses VFL into constraints.|
- * |[View](#autolayoutview)|`class`|Main entity for adding & evaluating constraints.|
- * |[SubView](#autolayoutsubview--object)|`class`|SubView's are automatically created when constraints are added to views. They give access to the evaluated results.|
- * |[Attribute](#autolayoutattribute--enum)|`enum`|Attribute types that are supported when adding constraints.|
- * |[Relation](#autolayoutrelation--enum)|`enum`|Relationship types that are supported when adding constraints.|
- * |[Priority](#autolayoutpriority--enum)|`enum`|Default priority values for when adding constraints.|
- *
- * ### AutoLayout
- *
- * @module AutoLayout
- */
-
-var View = function () {
-
-  /**
-   * @class View
-   * @param {Object} [options] Configuration options.
-   * @param {Number} [options.width] Initial width of the view.
-   * @param {Number} [options.height] Initial height of the view.
-   * @param {Number|Object} [options.spacing] Spacing for the view (default: 8) (see `setSpacing`).
-   * @param {Array} [options.constraints] One or more constraint definitions (see `addConstraints`).
-   */
-  function View(options) {
-    _classCallCheck(this, View);
-
-    this._solver = false ? new c.SimplexSolver() : new kiwi.Solver();
-    this._subViews = {};
-    //this._spacing = undefined;
-    this._parentSubView = new SubView({
-      solver: this._solver
-    });
-    this.setSpacing(options && options.spacing !== undefined ? options.spacing : 8);
-    //this.constraints = [];
-    if (options) {
-      if (options.width !== undefined || options.height !== undefined) {
-        this.setSize(options.width, options.height);
-      }
-      if (options.constraints) {
-        this.addConstraints(options.constraints);
-      }
-    }
-  }
-
-  /**
-   * Sets the width and height of the view.
-   *
-   * @param {Number} width Width of the view.
-   * @param {Number} height Height of the view.
-   * @return {View} this
-   */
-
-
-  _createClass(View, [{
-    key: 'setSize',
-    value: function setSize(width, height /*, depth*/) {
-      this._parentSubView.intrinsicWidth = width;
-      this._parentSubView.intrinsicHeight = height;
-      return this;
-    }
-
-    /**
-     * Width that was set using `setSize`.
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'setSpacing',
-
-
-    /**
-     * Sets the spacing for the view.
-     *
-     * The spacing can be set for 7 different variables:
-     * `top`, `right`, `bottom`, `left`, `width`, `height` and `zIndex`. The `left`-spacing is
-     * used when a spacer is used between the parent-view and a sub-view (e.g. `|-[subView]`).
-     * The same is true for the `right`, `top` and `bottom` spacers. The `width` and `height` are
-     * used for spacers in between sub-views (e.g. `[view1]-[view2]`).
-     *
-     * Instead of using the full spacing syntax, it is also possible to use shorthand notations:
-     *
-     * |Syntax|Type|Description|
-     * |---|---|---|
-     * |`[top, right, bottom, left, width, height, zIndex]`|Array(7)|Full syntax including z-index **(clockwise order)**.|
-     * |`[top, right, bottom, left, width, height]`|Array(6)|Full horizontal & vertical spacing syntax (no z-index) **(clockwise order)**.|
-     * |`[horizontal, vertical, zIndex]`|Array(3)|Horizontal = left, right, width, vertical = top, bottom, height.|
-     * |`[horizontal, vertical]`|Array(2)|Horizontal = left, right, width, vertical = top, bottom, height, z-index = 1.|
-     * |`spacing`|Number|Horizontal & vertical spacing are all the same, z-index = 1.|
-     *
-     * Examples:
-     * ```javascript
-     * view.setSpacing(10); // horizontal & vertical spacing 10
-     * view.setSpacing([10, 15, 2]); // horizontal spacing 10, vertical spacing 15, z-axis spacing 2
-     * view.setSpacing([10, 20, 10, 20, 5, 5]); // top, right, bottom, left, horizontal, vertical
-     * view.setSpacing([10, 20, 10, 20, 5, 5, 1]); // top, right, bottom, left, horizontal, vertical, z
-     * ```
-     *
-     * @param {Number|Array} spacing
-     * @return {View} this
-     */
-    value: function setSpacing(spacing) {
-      // convert spacing into array: [top, right, bottom, left, horz, vert, z-index]
-      switch (Array.isArray(spacing) ? spacing.length : -1) {
-        case -1:
-          spacing = [spacing, spacing, spacing, spacing, spacing, spacing, 1];break;
-        case 1:
-          spacing = [spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], 1];break;
-        case 2:
-          spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], 1];break;
-        case 3:
-          spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], spacing[2]];break;
-        case 6:
-          spacing = [spacing[0], spacing[1], spacing[2], spacing[3], spacing[4], spacing[5], 1];break;
-        case 7:
-          break;
-        default:
-          throw 'Invalid spacing syntax';
-      }
-      if (!_compareSpacing(this._spacing, spacing)) {
-        this._spacing = spacing;
-        // update spacing variables
-        if (this._spacingVars) {
-          for (var i = 0; i < this._spacingVars.length; i++) {
-            if (this._spacingVars[i]) {
-              this._solver.suggestValue(this._spacingVars[i], this._spacing[i]);
-            }
-          }
-          if (false) {
-            this._solver.resolve();
-          } else {
-            this._solver.updateVariables();
-          }
-        }
-      }
-      return this;
-    }
-
-    /**
-     * Adds a constraint definition.
-     *
-     * A constraint definition has the following format:
-     *
-     * ```javascript
-     * constraint: {
-     *   view1: {String},
-     *   attr1: {AutoLayout.Attribute},
-     *   relation: {AutoLayout.Relation},
-     *   view2: {String},
-     *   attr2: {AutoLayout.Attribute},
-     *   multiplier: {Number},
-     *   constant: {Number},
-     *   priority: {Number}(0..1000)
-     * }
-     * ```
-     * @param {Object} constraint Constraint definition.
-     * @return {View} this
-     */
-
-  }, {
-    key: 'addConstraint',
-    value: function addConstraint(constraint) {
-      _addConstraint.call(this, constraint);
-      if (!false) {
-        this._solver.updateVariables();
-      }
-      return this;
-    }
-
-    /**
-     * Adds one or more constraint definitions.
-     *
-     * A constraint definition has the following format:
-     *
-     * ```javascript
-     * constraint: {
-     *   view1: {String},
-     *   attr1: {AutoLayout.Attribute},
-     *   relation: {AutoLayout.Relation},
-     *   view2: {String},
-     *   attr2: {AutoLayout.Attribute},
-     *   multiplier: {Number},
-     *   constant: {Number},
-     *   priority: {Number}(0..1000)
-     * }
-     * ```
-     * @param {Array} constraints One or more constraint definitions.
-     * @return {View} this
-     */
-
-  }, {
-    key: 'addConstraints',
-    value: function addConstraints(constraints) {
-      for (var j = 0; j < constraints.length; j++) {
-        _addConstraint.call(this, constraints[j]);
-      }
-      if (!false) {
-        this._solver.updateVariables();
-      }
-      return this;
-    }
-
-    /**
-     * Dictionary of `SubView` objects that have been created when adding constraints.
-     * @readonly
-     * @type {Object.SubView}
-     */
-
-  }, {
-    key: 'width',
-    get: function get() {
-      return this._parentSubView.intrinsicWidth;
-    }
-
-    /**
-     * Height that was set using `setSize`.
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'height',
-    get: function get() {
-      return this._parentSubView.intrinsicHeight;
-    }
-
-    /**
-     * Width that is calculated from the constraints and the `.intrinsicWidth` of
-     * the sub-views.
-     *
-     * When the width has been explicitely set using `setSize`, the fittingWidth
-     * will **always** be the same as the explicitely set width. To calculate the size
-     * based on the content, use:
-     * ```javascript
-     * var view = new AutoLayout.View({
-     *   constraints: VisualFormat.parse('|-[view1]-[view2]-'),
-     *   spacing: 20
-     * });
-     * view.subViews.view1.intrinsicWidth = 100;
-     * view.subViews.view2.intrinsicWidth = 100;
-     * console.log('fittingWidth: ' + view.fittingWidth); // 260
-     * ```
-     *
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'fittingWidth',
-    get: function get() {
-      return this._parentSubView.width;
-    }
-
-    /**
-     * Height that is calculated from the constraints and the `.intrinsicHeight` of
-     * the sub-views.
-     *
-     * See `.fittingWidth`.
-     *
-     * @readonly
-     * @type {Number}
-     */
-
-  }, {
-    key: 'fittingHeight',
-    get: function get() {
-      return this._parentSubView.height;
-    }
-  }, {
-    key: 'subViews',
-    get: function get() {
-      return this._subViews;
-    }
-
-    /**
-     * Checks whether the constraints incompletely specify the location
-     * of the subViews.
-     * @private
-     */
-    //get hasAmbiguousLayout() {
-    // Todo
-    //}
-
-  }]);
-
-  return View;
-}();
-
-//import DOM from './DOM';
-
-/**
- * AutoLayout.
- *
- * @namespace AutoLayout
- * @property {Attribute} Attribute
- * @property {Relation} Relation
- * @property {Priority} Priority
- * @property {VisualFormat} VisualFormat
- * @property {View} View
- * @property {SubView} SubView
- */
-
-
-var AutoLayout = {
-  Attribute: Attribute,
-  Relation: Relation,
-  Priority: Priority,
-  VisualFormat: VisualFormat,
-  View: View,
-  SubView: SubView
-  //DOM: DOM
-};
-
-module.exports = AutoLayout;
-
-},{"kiwi.js":2}],2:[function(require,module,exports){
-(function (root, factory) {
-  if (typeof define === 'function' && define.amd) {
-    // AMD. Register as an anonymous module unless amdModuleId is set
-    define([], function () {
-      return (root['kiwi'] = factory());
-    });
-  } else if (typeof exports === 'object') {
-    // Node. Does not work with strict CommonJS, but
-    // only CommonJS-like environments that support module.exports,
-    // like Node.
-    module.exports = factory();
-  } else {
-    root['kiwi'] = factory();
-  }
-}(this, function () {
-
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-var tsu;
-(function (tsu) {
-
-    /**
-    * An iterator for an array of items.
-    */
-    var ArrayIterator = (function () {
-        /*
-        * Construct a new ArrayIterator.
-        *
-        * @param array The array of items to iterate.
-        * @param [index] The index at which to start iteration.
-        */
-        function ArrayIterator(array, index) {
-            if (typeof index === "undefined") { index = 0; }
-            this._array = array;
-            this._index = Math.max(0, Math.min(index, array.length));
-        }
-        /**
-        * Returns the next item from the iterator or undefined.
-        */
-        ArrayIterator.prototype.__next__ = function () {
-            return this._array[this._index++];
-        };
-
-        /**
-        * Returns this same iterator.
-        */
-        ArrayIterator.prototype.__iter__ = function () {
-            return this;
-        };
-        return ArrayIterator;
-    })();
-    tsu.ArrayIterator = ArrayIterator;
-
-    /**
-    * A reverse iterator for an array of items.
-    */
-    var ReverseArrayIterator = (function () {
-        /**
-        * Construct a new ReverseArrayIterator.
-        *
-        * @param array The array of items to iterate.
-        * @param [index] The index at which to start iteration.
-        */
-        function ReverseArrayIterator(array, index) {
-            if (typeof index === "undefined") { index = array.length; }
-            this._array = array;
-            this._index = Math.max(0, Math.min(index, array.length));
-        }
-        /**
-        * Returns the next item from the iterator or undefined.
-        */
-        ReverseArrayIterator.prototype.__next__ = function () {
-            return this._array[--this._index];
-        };
-
-        /**
-        * Returns this same iterator.
-        */
-        ReverseArrayIterator.prototype.__iter__ = function () {
-            return this;
-        };
-        return ReverseArrayIterator;
-    })();
-    tsu.ReverseArrayIterator = ReverseArrayIterator;
-
-    
-
-    function iter(object) {
-        if (object instanceof Array) {
-            return new ArrayIterator(object);
-        }
-        return object.__iter__();
-    }
-    tsu.iter = iter;
-
-    
-
-    function reversed(object) {
-        if (object instanceof Array) {
-            return new ReverseArrayIterator(object);
-        }
-        return object.__reversed__();
-    }
-    tsu.reversed = reversed;
-
-    /**
-    * Returns the next value from an iterator, or undefined.
-    */
-    function next(iterator) {
-        return iterator.__next__();
-    }
-    tsu.next = next;
-
-
-    function forEach(object, callback) {
-        if (object instanceof Array) {
-            for (var i = 0, n = object.length; i < n; ++i) {
-                if (callback(object[i]) === false) {
-                    return;
-                }
-            }
-        } else {
-            var value;
-            var it = object.__iter__();
-            while ((value = it.__next__()) !== undefined) {
-                if (callback(value) === false) {
-                    return;
-                }
-            }
-        }
-    }
-    tsu.forEach = forEach;
-
-})(tsu || (tsu = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-var tsu;
-(function (tsu) {
-    
-
-    /**
-    * A class which defines a generic pair object.
-    */
-    var Pair = (function () {
-        /**
-        * Construct a new Pair object.
-        *
-        * @param first The first item of the pair.
-        * @param second The second item of the pair.
-        */
-        function Pair(first, second) {
-            this.first = first;
-            this.second = second;
-        }
-        /**
-        * Create a copy of the pair.
-        */
-        Pair.prototype.copy = function () {
-            return new Pair(this.first, this.second);
-        };
-        return Pair;
-    })();
-    tsu.Pair = Pair;
-})(tsu || (tsu = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="iterator.ts"/>
-/// <reference path="utility.ts"/>
-var tsu;
-(function (tsu) {
-    /**
-    * Perform a lower bound search on a sorted array.
-    *
-    * @param array The array of sorted items to search.
-    * @param value The value to located in the array.
-    * @param compare The value comparison function.
-    * @returns The index of the first element in the array which
-    *          compares greater than or equal to the given value.
-    */
-    function lowerBound(array, value, compare) {
-        var begin = 0;
-        var n = array.length;
-        var half;
-        var middle;
-        while (n > 0) {
-            half = n >> 1;
-            middle = begin + half;
-            if (compare(array[middle], value) < 0) {
-                begin = middle + 1;
-                n -= half + 1;
-            } else {
-                n = half;
-            }
-        }
-        return begin;
-    }
-    tsu.lowerBound = lowerBound;
-
-    /**
-    * Perform a binary search on a sorted array.
-    *
-    * @param array The array of sorted items to search.
-    * @param value The value to located in the array.
-    * @param compare The value comparison function.
-    * @returns The index of the found item, or -1.
-    */
-    function binarySearch(array, value, compare) {
-        var index = lowerBound(array, value, compare);
-        if (index === array.length) {
-            return -1;
-        }
-        var item = array[index];
-        if (compare(item, value) !== 0) {
-            return -1;
-        }
-        return index;
-    }
-    tsu.binarySearch = binarySearch;
-
-    /**
-    * Perform a binary find on a sorted array.
-    *
-    * @param array The array of sorted items to search.
-    * @param value The value to located in the array.
-    * @param compare The value comparison function.
-    * @returns The found item in the array, or undefined.
-    */
-    function binaryFind(array, value, compare) {
-        var index = lowerBound(array, value, compare);
-        if (index === array.length) {
-            return undefined;
-        }
-        var item = array[index];
-        if (compare(item, value) !== 0) {
-            return undefined;
-        }
-        return item;
-    }
-    tsu.binaryFind = binaryFind;
-
-})(tsu || (tsu = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="iterator.ts"/>
-var tsu;
-(function (tsu) {
-    /**
-    * A base class for implementing array-based data structures.
-    *
-    * @class
-    */
-    var ArrayBase = (function () {
-        function ArrayBase() {
-            /*
-            * The internal data array.
-            *
-            * @protected
-            */
-            this._array = [];
-        }
-        /**
-        * Returns the number of items in the array.
-        */
-        ArrayBase.prototype.size = function () {
-            return this._array.length;
-        };
-
-        /**
-        * Returns true if the array is empty.
-        */
-        ArrayBase.prototype.empty = function () {
-            return this._array.length === 0;
-        };
-
-        /**
-        * Returns the item at the given array index.
-        *
-        * @param index The integer index of the desired item.
-        */
-        ArrayBase.prototype.itemAt = function (index) {
-            return this._array[index];
-        };
-
-        /**
-        * Removes and returns the item at the given index.
-        *
-        * @param index The integer index of the desired item.
-        */
-        ArrayBase.prototype.takeAt = function (index) {
-            return this._array.splice(index, 1)[0];
-        };
-
-        /**
-        * Clear the internal contents of array.
-        */
-        ArrayBase.prototype.clear = function () {
-            this._array = [];
-        };
-
-        /**
-        * Swap this array's contents with another array.
-        *
-        * @param other The array base to use for the swap.
-        */
-        ArrayBase.prototype.swap = function (other) {
-            var array = this._array;
-            this._array = other._array;
-            other._array = array;
-        };
-
-        /**
-        * Returns an iterator over the array of items.
-        */
-        ArrayBase.prototype.__iter__ = function () {
-            return tsu.iter(this._array);
-        };
-
-        /**
-        * Returns a reverse iterator over the array of items.
-        */
-        ArrayBase.prototype.__reversed__ = function () {
-            return tsu.reversed(this._array);
-        };
-        return ArrayBase;
-    })();
-    tsu.ArrayBase = ArrayBase;
-})(tsu || (tsu = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-var __extends = this.__extends || function (d, b) {
-    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
-    function __() { this.constructor = d; }
-    __.prototype = b.prototype;
-    d.prototype = new __();
-};
-/// <reference path="algorithm.ts"/>
-/// <reference path="array_base.ts"/>
-/// <reference path="iterator.ts"/>
-/// <reference path="utility.ts"/>
-var tsu;
-(function (tsu) {
-    /**
-    * A mapping container build on a sorted array.
-    *
-    * @class
-    */
-    var AssociativeArray = (function (_super) {
-        __extends(AssociativeArray, _super);
-        /**
-        * Construct a new AssociativeArray.
-        *
-        * @param compare The key comparison function.
-        */
-        function AssociativeArray(compare) {
-            _super.call(this);
-            this._compare = compare;
-            this._wrapped = wrapCompare(compare);
-        }
-        /**
-        * Returns the key comparison function used by this array.
-        */
-        AssociativeArray.prototype.comparitor = function () {
-            return this._compare;
-        };
-
-        /**
-        * Return the array index of the given key, or -1.
-        *
-        * @param key The key to locate in the array.
-        */
-        AssociativeArray.prototype.indexOf = function (key) {
-            return tsu.binarySearch(this._array, key, this._wrapped);
-        };
-
-        /**
-        * Returns true if the key is in the array, false otherwise.
-        *
-        * @param key The key to locate in the array.
-        */
-        AssociativeArray.prototype.contains = function (key) {
-            return tsu.binarySearch(this._array, key, this._wrapped) >= 0;
-        };
-
-        /**
-        * Returns the pair associated with the given key, or undefined.
-        *
-        * @param key The key to locate in the array.
-        */
-        AssociativeArray.prototype.find = function (key) {
-            return tsu.binaryFind(this._array, key, this._wrapped);
-        };
-
-        /**
-        * Returns the pair associated with the key if it exists.
-        *
-        * If the key does not exist, a new pair will be created and
-        * inserted using the value created by the given factory.
-        *
-        * @param key The key to locate in the array.
-        * @param factory The function which creates the default value.
-        */
-        AssociativeArray.prototype.setDefault = function (key, factory) {
-            var array = this._array;
-            var index = tsu.lowerBound(array, key, this._wrapped);
-            if (index === array.length) {
-                var pair = new tsu.Pair(key, factory());
-                array.push(pair);
-                return pair;
-            }
-            var currPair = array[index];
-            if (this._compare(currPair.first, key) !== 0) {
-                var pair = new tsu.Pair(key, factory());
-                array.splice(index, 0, pair);
-                return pair;
-            }
-            return currPair;
-        };
-
-        /**
-        * Insert the pair into the array and return the pair.
-        *
-        * This will overwrite any existing entry in the array.
-        *
-        * @param key The key portion of the pair.
-        * @param value The value portion of the pair.
-        */
-        AssociativeArray.prototype.insert = function (key, value) {
-            var array = this._array;
-            var index = tsu.lowerBound(array, key, this._wrapped);
-            if (index === array.length) {
-                var pair = new tsu.Pair(key, value);
-                array.push(pair);
-                return pair;
-            }
-            var currPair = array[index];
-            if (this._compare(currPair.first, key) !== 0) {
-                var pair = new tsu.Pair(key, value);
-                array.splice(index, 0, pair);
-                return pair;
-            }
-            currPair.second = value;
-            return currPair;
-        };
-
-        AssociativeArray.prototype.update = function (object) {
-            var _this = this;
-            if (object instanceof AssociativeArray) {
-                var obj = object;
-                this._array = merge(this._array, obj._array, this._compare);
-            } else {
-                tsu.forEach(object, function (pair) {
-                    _this.insert(pair.first, pair.second);
-                });
-            }
-        };
-
-        /**
-        * Removes and returns the pair for the given key, or undefined.
-        *
-        * @param key The key to remove from the map.
-        */
-        AssociativeArray.prototype.erase = function (key) {
-            var array = this._array;
-            var index = tsu.binarySearch(array, key, this._wrapped);
-            if (index < 0) {
-                return undefined;
-            }
-            return array.splice(index, 1)[0];
-        };
-
-        /**
-        * Create a copy of this associative array.
-        */
-        AssociativeArray.prototype.copy = function () {
-            var theCopy = new AssociativeArray(this._compare);
-            var copyArray = theCopy._array;
-            var thisArray = this._array;
-            for (var i = 0, n = thisArray.length; i < n; ++i) {
-                copyArray.push(thisArray[i].copy());
-            }
-            return theCopy;
-        };
-        return AssociativeArray;
-    })(tsu.ArrayBase);
-    tsu.AssociativeArray = AssociativeArray;
-
-    /**
-    * An internal which wraps a comparison key function.
-    */
-    function wrapCompare(cmp) {
-        return function (pair, value) {
-            return cmp(pair.first, value);
-        };
-    }
-
-    /**
-    * An internal function which merges two ordered pair arrays.
-    */
-    function merge(first, second, compare) {
-        var i = 0, j = 0;
-        var len1 = first.length;
-        var len2 = second.length;
-        var merged = [];
-        while (i < len1 && j < len2) {
-            var a = first[i];
-            var b = second[j];
-            var v = compare(a.first, b.first);
-            if (v < 0) {
-                merged.push(a.copy());
-                ++i;
-            } else if (v > 0) {
-                merged.push(b.copy());
-                ++j;
-            } else {
-                merged.push(b.copy());
-                ++i;
-                ++j;
-            }
-        }
-        while (i < len1) {
-            merged.push(first[i].copy());
-            ++i;
-        }
-        while (j < len2) {
-            merged.push(second[j].copy());
-            ++j;
-        }
-        return merged;
-    }
-})(tsu || (tsu = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="algorithm.ts"/>
-/// <reference path="array_base.ts"/>
-/// <reference path="associative_array.ts"/>
-/// <reference path="iterator.ts"/>
-/// <reference path="unique_array.ts"/>
-/// <reference path="utility.ts"/>
-
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-// <reference path="expression.ts">
-// <reference path="strength.ts">
-/**
- * Kiwi is an efficient implementation of the Cassowary constraint solving
- * algorithm, based on the seminal Cassowary paper.
- * It is *not* a refactoring or port of the original C++ solver, but
- * has been designed from the ground up to be lightweight and fast.
- *
- * **Example**
- * ```javascript
- * var kiwi = require('kiwi');
- *
- * // Create a solver
- * var solver = new kiwi.Solver();
- *
- * // Create and add some editable variables
- * var left = new kiwi.Variable();
- * var width = new kiwi.Variable();
- * solver.addEditVariable(left, kiwi.Strength.strong);
- * solver.addEditVariable(width, kiwi.Strength.strong);
- *
- * // Create a variable calculated through a constraint
- * var centerX = new kiwi.Variable();
- * var expr = new kiwi.Expression([-1, centerX], left, [0.5, width]);
- * solver.addConstraint(new kiwi.Constraint(expr, kiwi.Operator.Eq, kiwi.Strength.required));
- *
- * // Suggest some values to the solver
- * solver.suggestValue(left, 0);
- * solver.suggestValue(width, 500);
- *
- * // Lets solve the problem!
- * solver.updateVariables();
- * assert(centerX.value(), 250);
- * ```
- *
- * ##API Documentation
- * @module kiwi
- */
-var kiwi;
-(function (kiwi) {
-    /**
-     * An enum defining the linear constraint operators.
-     *
-     * |Value|Operator|Description|
-     * |----|-----|-----|
-     * |`Le`|<=|Less than equal|
-     * |`Ge`|>=|Greater than equal|
-     * |`Eq`|==|Equal|
-     *
-     * @enum {Number}
-     */
-    (function (Operator) {
-        Operator[Operator["Le"] = 0] = "Le";
-        Operator[Operator["Ge"] = 1] = "Ge";
-        Operator[Operator["Eq"] = 2] = "Eq"; // ==
-    })(kiwi.Operator || (kiwi.Operator = {}));
-    var Operator = kiwi.Operator;
-    /**
-     * A linear constraint equation.
-     *
-     * A constraint equation is composed of an expression, an operator,
-     * and a strength. The RHS of the equation is implicitly zero.
-     *
-     * @class
-     * @param {Expression} expression The constraint expression (LHS).
-     * @param {Operator} operator The equation operator.
-     * @param {Expression} [rhs] Right hand side of the expression.
-     * @param {Number} [strength=Strength.required] The strength of the constraint.
-     */
-    var Constraint = (function () {
-        function Constraint(expression, operator, rhs, strength) {
-            if (strength === void 0) { strength = kiwi.Strength.required; }
-            this._id = CnId++;
-            this._operator = operator;
-            this._strength = kiwi.Strength.clip(strength);
-            if ((rhs === undefined) && (expression instanceof kiwi.Expression)) {
-                this._expression = expression;
-            }
-            else {
-                this._expression = expression.minus(rhs);
-            }
-        }
-        /**
-          * A static constraint comparison function.
-          * @private
-          */
-        Constraint.Compare = function (a, b) {
-            return a.id() - b.id();
-        };
-        /**
-         * Returns the unique id number of the constraint.
-         * @private
-         */
-        Constraint.prototype.id = function () {
-            return this._id;
-        };
-        /**
-         * Returns the expression of the constraint.
-         *
-         * @return {Expression} expression
-         */
-        Constraint.prototype.expression = function () {
-            return this._expression;
-        };
-        /**
-         * Returns the relational operator of the constraint.
-         *
-         * @return {Operator} linear constraint operator
-         */
-        Constraint.prototype.op = function () {
-            return this._operator;
-        };
-        /**
-         * Returns the strength of the constraint.
-         *
-         * @return {Number} strength
-         */
-        Constraint.prototype.strength = function () {
-            return this._strength;
-        };
-        Constraint.prototype.toString = function () {
-            return this._expression.toString() + " " + ["<=", ">=", "="][this._operator] + " 0 (" + this._strength.toString() + ")";
-        };
-        return Constraint;
-    })();
-    kiwi.Constraint = Constraint;
-    /**
-     * The internal constraint id counter.
-     * @private
-     */
-    var CnId = 0;
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="../thirdparty/tsu.d.ts"/>
-var kiwi;
-(function (kiwi) {
-    function createMap(compare) {
-        return new tsu.AssociativeArray(compare);
-    }
-    kiwi.createMap = createMap;
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-var kiwi;
-(function (kiwi) {
-    /**
-     * The primary user constraint variable.
-     *
-     * @class
-     * @param {String} [name=""] The name to associated with the variable.
-     */
-    var Variable = (function () {
-        function Variable(name) {
-            if (name === void 0) { name = ""; }
-            this._value = 0.0;
-            this._context = null;
-            this._id = VarId++;
-            this._name = name;
-        }
-        /**
-         * A static variable comparison function.
-         * @private
-         */
-        Variable.Compare = function (a, b) {
-            return a.id() - b.id();
-        };
-        /**
-         * Returns the unique id number of the variable.
-         * @private
-         */
-        Variable.prototype.id = function () {
-            return this._id;
-        };
-        /**
-         * Returns the name of the variable.
-         *
-         * @return {String} name of the variable
-         */
-        Variable.prototype.name = function () {
-            return this._name;
-        };
-        /**
-         * Set the name of the variable.
-         *
-         * @param {String} name Name of the variable
-         */
-        Variable.prototype.setName = function (name) {
-            this._name = name;
-        };
-        /**
-         * Returns the user context object of the variable.
-         * @private
-         */
-        Variable.prototype.context = function () {
-            return this._context;
-        };
-        /**
-         * Set the user context object of the variable.
-         * @private
-         */
-        Variable.prototype.setContext = function (context) {
-            this._context = context;
-        };
-        /**
-         * Returns the value of the variable.
-         *
-         * @return {Number} Calculated value
-         */
-        Variable.prototype.value = function () {
-            return this._value;
-        };
-        /**
-         * Set the value of the variable.
-         * @private
-         */
-        Variable.prototype.setValue = function (value) {
-            this._value = value;
-        };
-        /**
-         * Creates a new Expression by adding a number, variable or expression
-         * to the variable.
-         *
-         * @param {Number|Variable|Expression} value Value to add.
-         * @return {Expression} expression
-         */
-        Variable.prototype.plus = function (value) {
-            return new kiwi.Expression(this, value);
-        };
-        /**
-         * Creates a new Expression by substracting a number, variable or expression
-         * from the variable.
-         *
-         * @param {Number|Variable|Expression} value Value to substract.
-         * @return {Expression} expression
-         */
-        Variable.prototype.minus = function (value) {
-            return new kiwi.Expression(this, typeof value === 'number' ? -value : [-1, value]);
-        };
-        /**
-         * Creates a new Expression by multiplying with a fixed number.
-         *
-         * @param {Number} coefficient Coefficient to multiply with.
-         * @return {Expression} expression
-         */
-        Variable.prototype.multiply = function (coefficient) {
-            return new kiwi.Expression([coefficient, this]);
-        };
-        /**
-         * Creates a new Expression by dividing with a fixed number.
-         *
-         * @param {Number} coefficient Coefficient to divide by.
-         * @return {Expression} expression
-         */
-        Variable.prototype.divide = function (coefficient) {
-            return new kiwi.Expression([1 / coefficient, this]);
-        };
-        /**
-         * Returns the JSON representation of the variable.
-         * @private
-         */
-        Variable.prototype.toJSON = function () {
-            return {
-                name: this._name,
-                value: this._value
-            };
-        };
-        Variable.prototype.toString = function () {
-            return this._context + "[" + this._name + ":" + this._value + "]";
-        };
-        return Variable;
-    })();
-    kiwi.Variable = Variable;
-    /**
-     * The internal variable id counter.
-     * @private
-     */
-    var VarId = 0;
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="../thirdparty/tsu.d.ts"/>
-/// <reference path="maptype.ts"/>
-/// <reference path="variable.ts"/>
-var kiwi;
-(function (kiwi) {
-    /**
-     * An expression of variable terms and a constant.
-     *
-     * The constructor accepts an arbitrary number of parameters,
-     * each of which must be one of the following types:
-     *  - number
-     *  - Variable
-     *  - Expression
-     *  - 2-tuple of [number, Variable|Expression]
-     *
-     * The parameters are summed. The tuples are multiplied.
-     *
-     * @class
-     * @param {...(number|Variable|Expression|Array)} args
-     */
-    var Expression = (function () {
-        function Expression() {
-            var parsed = parseArgs(arguments);
-            this._terms = parsed.terms;
-            this._constant = parsed.constant;
-        }
-        /**
-         * Returns the mapping of terms in the expression.
-         *
-         * This *must* be treated as const.
-         * @private
-         */
-        Expression.prototype.terms = function () {
-            return this._terms;
-        };
-        /**
-         * Returns the constant of the expression.
-         * @private
-         */
-        Expression.prototype.constant = function () {
-            return this._constant;
-        };
-        /**
-         * Returns the computed value of the expression.
-         *
-         * @private
-         * @return {Number} computed value of the expression
-         */
-        Expression.prototype.value = function () {
-            var result = this._constant;
-            for (var i = 0, n = this._terms.size(); i < n; i++) {
-                var pair = this._terms.itemAt(i);
-                result += pair.first.value() * pair.second;
-            }
-            return result;
-        };
-        /**
-         * Creates a new Expression by adding a number, variable or expression
-         * to the expression.
-         *
-         * @param {Number|Variable|Expression} value Value to add.
-         * @return {Expression} expression
-         */
-        Expression.prototype.plus = function (value) {
-            return new Expression(this, value);
-        };
-        /**
-         * Creates a new Expression by substracting a number, variable or expression
-         * from the expression.
-         *
-         * @param {Number|Variable|Expression} value Value to substract.
-         * @return {Expression} expression
-         */
-        Expression.prototype.minus = function (value) {
-            return new Expression(this, typeof value === 'number' ? -value : [-1, value]);
-        };
-        /**
-         * Creates a new Expression by multiplying with a fixed number.
-         *
-         * @param {Number} coefficient Coefficient to multiply with.
-         * @return {Expression} expression
-         */
-        Expression.prototype.multiply = function (coefficient) {
-            return new Expression([coefficient, this]);
-        };
-        /**
-         * Creates a new Expression by dividing with a fixed number.
-         *
-         * @param {Number} coefficient Coefficient to divide by.
-         * @return {Expression} expression
-         */
-        Expression.prototype.divide = function (coefficient) {
-            return new Expression([1 / coefficient, this]);
-        };
-        Expression.prototype.isConstant = function () {
-            return this._terms.size() == 0;
-        };
-        Expression.prototype.toString = function () {
-            var result = this._terms._array.map(function (pair, idx) {
-                return (pair.second + "*" + pair.first.toString());
-            }).join(" + ");
-            if (!this.isConstant() && this._constant !== 0) {
-                result += " + ";
-            }
-            result += this._constant;
-            return result;
-        };
-        return Expression;
-    })();
-    kiwi.Expression = Expression;
-    /**
-     * An internal argument parsing function.
-     * @private
-     */
-    function parseArgs(args) {
-        var constant = 0.0;
-        var factory = function () { return 0.0; };
-        var terms = kiwi.createMap(kiwi.Variable.Compare);
-        for (var i = 0, n = args.length; i < n; ++i) {
-            var item = args[i];
-            if (typeof item === "number") {
-                constant += item;
-            }
-            else if (item instanceof kiwi.Variable) {
-                terms.setDefault(item, factory).second += 1.0;
-            }
-            else if (item instanceof Expression) {
-                constant += item.constant();
-                var terms2 = item.terms();
-                for (var j = 0, k = terms2.size(); j < k; j++) {
-                    var termPair = terms2.itemAt(j);
-                    terms.setDefault(termPair.first, factory).second += termPair.second;
-                }
-            }
-            else if (item instanceof Array) {
-                if (item.length !== 2) {
-                    throw new Error("array must have length 2");
-                }
-                var value = item[0];
-                var value2 = item[1];
-                if (typeof value !== "number") {
-                    throw new Error("array item 0 must be a number");
-                }
-                if (value2 instanceof kiwi.Variable) {
-                    terms.setDefault(value2, factory).second += value;
-                }
-                else if (value2 instanceof Expression) {
-                    constant += (value2.constant() * value);
-                    var terms2 = value2.terms();
-                    for (var j = 0, k = terms2.size(); j < k; j++) {
-                        var termPair = terms2.itemAt(j);
-                        terms.setDefault(termPair.first, factory).second += (termPair.second * value);
-                    }
-                }
-                else {
-                    throw new Error("array item 1 must be a variable or expression");
-                }
-            }
-            else {
-                throw new Error("invalid Expression argument: " + item);
-            }
-        }
-        return { terms: terms, constant: constant };
-    }
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-var kiwi;
-(function (kiwi) {
-    /**
-     * @class Strength
-     */
-    var Strength;
-    (function (Strength) {
-        /**
-         * Create a new symbolic strength.
-         *
-         * @param {Number} a strong
-         * @param {Number} b medium
-         * @param {Number} c weak
-         * @param {Number} [w] weight
-         * @return {Number} strength
-         */
-        function create(a, b, c, w) {
-            if (w === void 0) { w = 1.0; }
-            var result = 0.0;
-            result += Math.max(0.0, Math.min(1000.0, a * w)) * 1000000.0;
-            result += Math.max(0.0, Math.min(1000.0, b * w)) * 1000.0;
-            result += Math.max(0.0, Math.min(1000.0, c * w));
-            return result;
-        }
-        Strength.create = create;
-        /**
-         * The 'required' symbolic strength.
-         */
-        Strength.required = create(1000.0, 1000.0, 1000.0);
-        /**
-         * The 'strong' symbolic strength.
-         */
-        Strength.strong = create(1.0, 0.0, 0.0);
-        /**
-         * The 'medium' symbolic strength.
-         */
-        Strength.medium = create(0.0, 1.0, 0.0);
-        /**
-         * The 'weak' symbolic strength.
-         */
-        Strength.weak = create(0.0, 0.0, 1.0);
-        /**
-         * Clip a symbolic strength to the allowed min and max.
-         * @private
-         */
-        function clip(value) {
-            return Math.max(0.0, Math.min(Strength.required, value));
-        }
-        Strength.clip = clip;
-    })(Strength = kiwi.Strength || (kiwi.Strength = {}));
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="../thirdparty/tsu.d.ts"/>
-/// <reference path="constraint.ts"/>
-/// <reference path="expression.ts"/>
-/// <reference path="maptype.ts"/>
-/// <reference path="strength.ts"/>
-/// <reference path="variable.ts"/>
-var kiwi;
-(function (kiwi) {
-    /**
-     * The constraint solver class.
-     *
-     * @class
-     */
-    var Solver = (function () {
-        /**
-         * Construct a new Solver.
-         */
-        function Solver() {
-            this._cnMap = createCnMap();
-            this._rowMap = createRowMap();
-            this._varMap = createVarMap();
-            this._editMap = createEditMap();
-            this._infeasibleRows = [];
-            this._objective = new Row();
-            this._artificial = null;
-            this._idTick = 0;
-        }
-        /**
-         * Creates and add a constraint to the solver.
-         *
-         * @param {Expression|Variable} lhs Left hand side of the expression
-         * @param {Operator} operator Operator
-         * @param {Expression|Variable|Number} rhs Right hand side of the expression
-         * @param {Number} [strength=Strength.required] Strength
-         */
-        Solver.prototype.createConstraint = function (lhs, operator, rhs, strength) {
-            if (strength === void 0) { strength = kiwi.Strength.required; }
-            var cn = new kiwi.Constraint(lhs, operator, rhs, strength);
-            this.addConstraint(cn);
-            return cn;
-        };
-        /**
-         * Add a constraint to the solver.
-         *
-         * @param {Constraint} constraint Constraint to add to the solver
-         */
-        Solver.prototype.addConstraint = function (constraint) {
-            var cnPair = this._cnMap.find(constraint);
-            if (cnPair !== undefined) {
-                throw new Error("duplicate constraint");
-            }
-            // Creating a row causes symbols to be reserved for the variables
-            // in the constraint. If this method exits with an exception,
-            // then its possible those variables will linger in the var map.
-            // Since its likely that those variables will be used in other
-            // constraints and since exceptional conditions are uncommon,
-            // i'm not too worried about aggressive cleanup of the var map.
-            var data = this._createRow(constraint);
-            var row = data.row;
-            var tag = data.tag;
-            var subject = this._chooseSubject(row, tag);
-            // If chooseSubject couldnt find a valid entering symbol, one
-            // last option is available if the entire row is composed of
-            // dummy variables. If the constant of the row is zero, then
-            // this represents redundant constraints and the new dummy
-            // marker can enter the basis. If the constant is non-zero,
-            // then it represents an unsatisfiable constraint.
-            if (subject.type() === SymbolType.Invalid && row.allDummies()) {
-                if (!nearZero(row.constant())) {
-                    throw new Error("unsatisfiable constraint");
-                }
-                else {
-                    subject = tag.marker;
-                }
-            }
-            // If an entering symbol still isn't found, then the row must
-            // be added using an artificial variable. If that fails, then
-            // the row represents an unsatisfiable constraint.
-            if (subject.type() === SymbolType.Invalid) {
-                if (!this._addWithArtificialVariable(row)) {
-                    throw new Error("unsatisfiable constraint");
-                }
-            }
-            else {
-                row.solveFor(subject);
-                this._substitute(subject, row);
-                this._rowMap.insert(subject, row);
-            }
-            this._cnMap.insert(constraint, tag);
-            // Optimizing after each constraint is added performs less
-            // aggregate work due to a smaller average system size. It
-            // also ensures the solver remains in a consistent state.
-            this._optimize(this._objective);
-        };
-        /**
-         * Remove a constraint from the solver.
-         *
-         * @param {Constraint} constraint Constraint to remove from the solver
-         */
-        Solver.prototype.removeConstraint = function (constraint) {
-            var cnPair = this._cnMap.erase(constraint);
-            if (cnPair === undefined) {
-                throw new Error("unknown constraint");
-            }
-            // Remove the error effects from the objective function
-            // *before* pivoting, or substitutions into the objective
-            // will lead to incorrect solver results.
-            this._removeConstraintEffects(constraint, cnPair.second);
-            // If the marker is basic, simply drop the row. Otherwise,
-            // pivot the marker into the basis and then drop the row.
-            var marker = cnPair.second.marker;
-            var rowPair = this._rowMap.erase(marker);
-            if (rowPair === undefined) {
-                var leaving = this._getMarkerLeavingSymbol(marker);
-                if (leaving.type() === SymbolType.Invalid) {
-                    throw new Error("failed to find leaving row");
-                }
-                rowPair = this._rowMap.erase(leaving);
-                rowPair.second.solveForEx(leaving, marker);
-                this._substitute(marker, rowPair.second);
-            }
-            // Optimizing after each constraint is removed ensures that the
-            // solver remains consistent. It makes the solver api easier to
-            // use at a small tradeoff for speed.
-            this._optimize(this._objective);
-        };
-        /**
-         * Test whether the solver contains the constraint.
-         *
-         * @param {Constraint} constraint Constraint to test for
-         * @return {Bool} true or false
-         */
-        Solver.prototype.hasConstraint = function (constraint) {
-            return this._cnMap.contains(constraint);
-        };
-        /**
-         * Add an edit variable to the solver.
-         *
-         * @param {Variable} variable Edit variable to add to the solver
-         * @param {Number} strength Strength, should be less than `Strength.required`
-         */
-        Solver.prototype.addEditVariable = function (variable, strength) {
-            var editPair = this._editMap.find(variable);
-            if (editPair !== undefined) {
-                throw new Error("duplicate edit variable");
-            }
-            strength = kiwi.Strength.clip(strength);
-            if (strength === kiwi.Strength.required) {
-                throw new Error("bad required strength");
-            }
-            var expr = new kiwi.Expression(variable);
-            var cn = new kiwi.Constraint(expr, kiwi.Operator.Eq, undefined, strength);
-            this.addConstraint(cn);
-            var tag = this._cnMap.find(cn).second;
-            var info = { tag: tag, constraint: cn, constant: 0.0 };
-            this._editMap.insert(variable, info);
-        };
-        /**
-         * Remove an edit variable from the solver.
-         *
-         * @param {Variable} variable Edit variable to remove from the solver
-         */
-        Solver.prototype.removeEditVariable = function (variable) {
-            var editPair = this._editMap.erase(variable);
-            if (editPair === undefined) {
-                throw new Error("unknown edit variable");
-            }
-            this.removeConstraint(editPair.second.constraint);
-        };
-        /**
-         * Test whether the solver contains the edit variable.
-         *
-         * @param {Variable} variable Edit variable to test for
-         * @return {Bool} true or false
-         */
-        Solver.prototype.hasEditVariable = function (variable) {
-            return this._editMap.contains(variable);
-        };
-        /**
-         * Suggest the value of an edit variable.
-         *
-         * @param {Variable} variable Edit variable to suggest a value for
-         * @param {Number} value Suggested value
-         */
-        Solver.prototype.suggestValue = function (variable, value) {
-            var editPair = this._editMap.find(variable);
-            if (editPair === undefined) {
-                throw new Error("unknown edit variable");
-            }
-            var rows = this._rowMap;
-            var info = editPair.second;
-            var delta = value - info.constant;
-            info.constant = value;
-            // Check first if the positive error variable is basic.
-            var marker = info.tag.marker;
-            var rowPair = rows.find(marker);
-            if (rowPair !== undefined) {
-                if (rowPair.second.add(-delta) < 0.0) {
-                    this._infeasibleRows.push(marker);
-                }
-                this._dualOptimize();
-                return;
-            }
-            // Check next if the negative error variable is basic.
-            var other = info.tag.other;
-            var rowPair = rows.find(other);
-            if (rowPair !== undefined) {
-                if (rowPair.second.add(delta) < 0.0) {
-                    this._infeasibleRows.push(other);
-                }
-                this._dualOptimize();
-                return;
-            }
-            // Otherwise update each row where the error variables exist.
-            for (var i = 0, n = rows.size(); i < n; ++i) {
-                var rowPair = rows.itemAt(i);
-                var row = rowPair.second;
-                var coeff = row.coefficientFor(marker);
-                if (coeff !== 0.0 && row.add(delta * coeff) < 0.0 &&
-                    rowPair.first.type() !== SymbolType.External) {
-                    this._infeasibleRows.push(rowPair.first);
-                }
-            }
-            this._dualOptimize();
-        };
-        /**
-         * Update the values of the variables.
-         */
-        Solver.prototype.updateVariables = function () {
-            var vars = this._varMap;
-            var rows = this._rowMap;
-            for (var i = 0, n = vars.size(); i < n; ++i) {
-                var pair = vars.itemAt(i);
-                var rowPair = rows.find(pair.second);
-                if (rowPair !== undefined) {
-                    pair.first.setValue(rowPair.second.constant());
-                }
-                else {
-                    pair.first.setValue(0.0);
-                }
-            }
-        };
-        /**
-         * Get the symbol for the given variable.
-         *
-         * If a symbol does not exist for the variable, one will be created.
-         * @private
-         */
-        Solver.prototype._getVarSymbol = function (variable) {
-            var _this = this;
-            var factory = function () { return _this._makeSymbol(SymbolType.External); };
-            return this._varMap.setDefault(variable, factory).second;
-        };
-        /**
-         * Create a new Row object for the given constraint.
-         *
-         * The terms in the constraint will be converted to cells in the row.
-         * Any term in the constraint with a coefficient of zero is ignored.
-         * This method uses the `_getVarSymbol` method to get the symbol for
-         * the variables added to the row. If the symbol for a given cell
-         * variable is basic, the cell variable will be substituted with the
-         * basic row.
-         *
-         * The necessary slack and error variables will be added to the row.
-         * If the constant for the row is negative, the sign for the row
-         * will be inverted so the constant becomes positive.
-         *
-         * Returns the created Row and the tag for tracking the constraint.
-         * @private
-         */
-        Solver.prototype._createRow = function (constraint) {
-            var expr = constraint.expression();
-            var row = new Row(expr.constant());
-            // Substitute the current basic variables into the row.
-            var terms = expr.terms();
-            for (var i = 0, n = terms.size(); i < n; ++i) {
-                var termPair = terms.itemAt(i);
-                if (!nearZero(termPair.second)) {
-                    var symbol = this._getVarSymbol(termPair.first);
-                    var basicPair = this._rowMap.find(symbol);
-                    if (basicPair !== undefined) {
-                        row.insertRow(basicPair.second, termPair.second);
-                    }
-                    else {
-                        row.insertSymbol(symbol, termPair.second);
-                    }
-                }
-            }
-            // Add the necessary slack, error, and dummy variables.
-            var objective = this._objective;
-            var strength = constraint.strength();
-            var tag = { marker: INVALID_SYMBOL, other: INVALID_SYMBOL };
-            switch (constraint.op()) {
-                case kiwi.Operator.Le:
-                case kiwi.Operator.Ge:
-                    {
-                        var coeff = constraint.op() === kiwi.Operator.Le ? 1.0 : -1.0;
-                        var slack = this._makeSymbol(SymbolType.Slack);
-                        tag.marker = slack;
-                        row.insertSymbol(slack, coeff);
-                        if (strength < kiwi.Strength.required) {
-                            var error = this._makeSymbol(SymbolType.Error);
-                            tag.other = error;
-                            row.insertSymbol(error, -coeff);
-                            objective.insertSymbol(error, strength);
-                        }
-                        break;
-                    }
-                case kiwi.Operator.Eq:
-                    {
-                        if (strength < kiwi.Strength.required) {
-                            var errplus = this._makeSymbol(SymbolType.Error);
-                            var errminus = this._makeSymbol(SymbolType.Error);
-                            tag.marker = errplus;
-                            tag.other = errminus;
-                            row.insertSymbol(errplus, -1.0); // v = eplus - eminus
-                            row.insertSymbol(errminus, 1.0); // v - eplus + eminus = 0
-                            objective.insertSymbol(errplus, strength);
-                            objective.insertSymbol(errminus, strength);
-                        }
-                        else {
-                            var dummy = this._makeSymbol(SymbolType.Dummy);
-                            tag.marker = dummy;
-                            row.insertSymbol(dummy);
-                        }
-                        break;
-                    }
-            }
-            // Ensure the row has a positive constant.
-            if (row.constant() < 0.0) {
-                row.reverseSign();
-            }
-            return { row: row, tag: tag };
-        };
-        /**
-         * Choose the subject for solving for the row.
-         *
-         * This method will choose the best subject for using as the solve
-         * target for the row. An invalid symbol will be returned if there
-         * is no valid target.
-         *
-         * The symbols are chosen according to the following precedence:
-         *
-         * 1) The first symbol representing an external variable.
-         * 2) A negative slack or error tag variable.
-         *
-         * If a subject cannot be found, an invalid symbol will be returned.
-         *
-         * @private
-         */
-        Solver.prototype._chooseSubject = function (row, tag) {
-            var cells = row.cells();
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                if (pair.first.type() === SymbolType.External) {
-                    return pair.first;
-                }
-            }
-            var type = tag.marker.type();
-            if (type === SymbolType.Slack || type === SymbolType.Error) {
-                if (row.coefficientFor(tag.marker) < 0.0) {
-                    return tag.marker;
-                }
-            }
-            type = tag.other.type();
-            if (type === SymbolType.Slack || type === SymbolType.Error) {
-                if (row.coefficientFor(tag.other) < 0.0) {
-                    return tag.other;
-                }
-            }
-            return INVALID_SYMBOL;
-        };
-        /**
-         * Add the row to the tableau using an artificial variable.
-         *
-         * This will return false if the constraint cannot be satisfied.
-         *
-         * @private
-         */
-        Solver.prototype._addWithArtificialVariable = function (row) {
-            // Create and add the artificial variable to the tableau.
-            var art = this._makeSymbol(SymbolType.Slack);
-            this._rowMap.insert(art, row.copy());
-            this._artificial = row.copy();
-            // Optimize the artificial objective. This is successful
-            // only if the artificial objective is optimized to zero.
-            this._optimize(this._artificial);
-            var success = nearZero(this._artificial.constant());
-            this._artificial = null;
-            // If the artificial variable is basic, pivot the row so that
-            // it becomes non-basic. If the row is constant, exit early.
-            var pair = this._rowMap.erase(art);
-            if (pair !== undefined) {
-                var basicRow = pair.second;
-                if (basicRow.isConstant()) {
-                    return success;
-                }
-                var entering = this._anyPivotableSymbol(basicRow);
-                if (entering.type() === SymbolType.Invalid) {
-                    return false; // unsatisfiable (will this ever happen?)
-                }
-                basicRow.solveForEx(art, entering);
-                this._substitute(entering, basicRow);
-                this._rowMap.insert(entering, basicRow);
-            }
-            // Remove the artificial variable from the tableau.
-            var rows = this._rowMap;
-            for (var i = 0, n = rows.size(); i < n; ++i) {
-                rows.itemAt(i).second.removeSymbol(art);
-            }
-            this._objective.removeSymbol(art);
-            return success;
-        };
-        /**
-         * Substitute the parametric symbol with the given row.
-         *
-         * This method will substitute all instances of the parametric symbol
-         * in the tableau and the objective function with the given row.
-         *
-         * @private
-         */
-        Solver.prototype._substitute = function (symbol, row) {
-            var rows = this._rowMap;
-            for (var i = 0, n = rows.size(); i < n; ++i) {
-                var pair = rows.itemAt(i);
-                pair.second.substitute(symbol, row);
-                if (pair.second.constant() < 0.0 &&
-                    pair.first.type() !== SymbolType.External) {
-                    this._infeasibleRows.push(pair.first);
-                }
-            }
-            this._objective.substitute(symbol, row);
-            if (this._artificial) {
-                this._artificial.substitute(symbol, row);
-            }
-        };
-        /**
-         * Optimize the system for the given objective function.
-         *
-         * This method performs iterations of Phase 2 of the simplex method
-         * until the objective function reaches a minimum.
-         *
-         * @private
-         */
-        Solver.prototype._optimize = function (objective) {
-            while (true) {
-                var entering = this._getEnteringSymbol(objective);
-                if (entering.type() === SymbolType.Invalid) {
-                    return;
-                }
-                var leaving = this._getLeavingSymbol(entering);
-                if (leaving.type() === SymbolType.Invalid) {
-                    throw new Error("the objective is unbounded");
-                }
-                // pivot the entering symbol into the basis
-                var row = this._rowMap.erase(leaving).second;
-                row.solveForEx(leaving, entering);
-                this._substitute(entering, row);
-                this._rowMap.insert(entering, row);
-            }
-        };
-        /**
-         * Optimize the system using the dual of the simplex method.
-         *
-         * The current state of the system should be such that the objective
-         * function is optimal, but not feasible. This method will perform
-         * an iteration of the dual simplex method to make the solution both
-         * optimal and feasible.
-         *
-         * @private
-         */
-        Solver.prototype._dualOptimize = function () {
-            var rows = this._rowMap;
-            var infeasible = this._infeasibleRows;
-            while (infeasible.length !== 0) {
-                var leaving = infeasible.pop();
-                var pair = rows.find(leaving);
-                if (pair !== undefined && pair.second.constant() < 0.0) {
-                    var entering = this._getDualEnteringSymbol(pair.second);
-                    if (entering.type() === SymbolType.Invalid) {
-                        throw new Error("dual optimize failed");
-                    }
-                    // pivot the entering symbol into the basis
-                    var row = pair.second;
-                    rows.erase(leaving);
-                    row.solveForEx(leaving, entering);
-                    this._substitute(entering, row);
-                    rows.insert(entering, row);
-                }
-            }
-        };
-        /**
-         * Compute the entering variable for a pivot operation.
-         *
-         * This method will return first symbol in the objective function which
-         * is non-dummy and has a coefficient less than zero. If no symbol meets
-         * the criteria, it means the objective function is at a minimum, and an
-         * invalid symbol is returned.
-         *
-         * @private
-         */
-        Solver.prototype._getEnteringSymbol = function (objective) {
-            var cells = objective.cells();
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                var symbol = pair.first;
-                if (pair.second < 0.0 && symbol.type() !== SymbolType.Dummy) {
-                    return symbol;
-                }
-            }
-            return INVALID_SYMBOL;
-        };
-        /**
-         * Compute the entering symbol for the dual optimize operation.
-         *
-         * This method will return the symbol in the row which has a positive
-         * coefficient and yields the minimum ratio for its respective symbol
-         * in the objective function. The provided row *must* be infeasible.
-         * If no symbol is found which meats the criteria, an invalid symbol
-         * is returned.
-         *
-         * @private
-         */
-        Solver.prototype._getDualEnteringSymbol = function (row) {
-            var ratio = Number.MAX_VALUE;
-            var entering = INVALID_SYMBOL;
-            var cells = row.cells();
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                var symbol = pair.first;
-                var c = pair.second;
-                if (c > 0.0 && symbol.type() !== SymbolType.Dummy) {
-                    var coeff = this._objective.coefficientFor(symbol);
-                    var r = coeff / c;
-                    if (r < ratio) {
-                        ratio = r;
-                        entering = symbol;
-                    }
-                }
-            }
-            return entering;
-        };
-        /**
-         * Compute the symbol for pivot exit row.
-         *
-         * This method will return the symbol for the exit row in the row
-         * map. If no appropriate exit symbol is found, an invalid symbol
-         * will be returned. This indicates that the objective function is
-         * unbounded.
-         *
-         * @private
-         */
-        Solver.prototype._getLeavingSymbol = function (entering) {
-            var ratio = Number.MAX_VALUE;
-            var found = INVALID_SYMBOL;
-            var rows = this._rowMap;
-            for (var i = 0, n = rows.size(); i < n; ++i) {
-                var pair = rows.itemAt(i);
-                var symbol = pair.first;
-                if (symbol.type() !== SymbolType.External) {
-                    var row = pair.second;
-                    var temp = row.coefficientFor(entering);
-                    if (temp < 0.0) {
-                        var temp_ratio = -row.constant() / temp;
-                        if (temp_ratio < ratio) {
-                            ratio = temp_ratio;
-                            found = symbol;
-                        }
-                    }
-                }
-            }
-            return found;
-        };
-        /**
-         * Compute the leaving symbol for a marker variable.
-         *
-         * This method will return a symbol corresponding to a basic row
-         * which holds the given marker variable. The row will be chosen
-         * according to the following precedence:
-         *
-         * 1) The row with a restricted basic varible and a negative coefficient
-         *    for the marker with the smallest ratio of -constant / coefficient.
-         *
-         * 2) The row with a restricted basic variable and the smallest ratio
-         *    of constant / coefficient.
-         *
-         * 3) The last unrestricted row which contains the marker.
-         *
-         * If the marker does not exist in any row, an invalid symbol will be
-         * returned. This indicates an internal solver error since the marker
-         * *should* exist somewhere in the tableau.
-         *
-         * @private
-         */
-        Solver.prototype._getMarkerLeavingSymbol = function (marker) {
-            var dmax = Number.MAX_VALUE;
-            var r1 = dmax;
-            var r2 = dmax;
-            var invalid = INVALID_SYMBOL;
-            var first = invalid;
-            var second = invalid;
-            var third = invalid;
-            var rows = this._rowMap;
-            for (var i = 0, n = rows.size(); i < n; ++i) {
-                var pair = rows.itemAt(i);
-                var row = pair.second;
-                var c = row.coefficientFor(marker);
-                if (c === 0.0) {
-                    continue;
-                }
-                var symbol = pair.first;
-                if (symbol.type() === SymbolType.External) {
-                    third = symbol;
-                }
-                else if (c < 0.0) {
-                    var r = -row.constant() / c;
-                    if (r < r1) {
-                        r1 = r;
-                        first = symbol;
-                    }
-                }
-                else {
-                    var r = row.constant() / c;
-                    if (r < r2) {
-                        r2 = r;
-                        second = symbol;
-                    }
-                }
-            }
-            if (first !== invalid) {
-                return first;
-            }
-            if (second !== invalid) {
-                return second;
-            }
-            return third;
-        };
-        /**
-         * Remove the effects of a constraint on the objective function.
-         *
-         * @private
-         */
-        Solver.prototype._removeConstraintEffects = function (cn, tag) {
-            if (tag.marker.type() === SymbolType.Error) {
-                this._removeMarkerEffects(tag.marker, cn.strength());
-            }
-            if (tag.other.type() === SymbolType.Error) {
-                this._removeMarkerEffects(tag.other, cn.strength());
-            }
-        };
-        /**
-         * Remove the effects of an error marker on the objective function.
-         *
-         * @private
-         */
-        Solver.prototype._removeMarkerEffects = function (marker, strength) {
-            var pair = this._rowMap.find(marker);
-            if (pair !== undefined) {
-                this._objective.insertRow(pair.second, -strength);
-            }
-            else {
-                this._objective.insertSymbol(marker, -strength);
-            }
-        };
-        /**
-         * Get the first Slack or Error symbol in the row.
-         *
-         * If no such symbol is present, an invalid symbol will be returned.
-         *
-         * @private
-         */
-        Solver.prototype._anyPivotableSymbol = function (row) {
-            var cells = row.cells();
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                var type = pair.first.type();
-                if (type === SymbolType.Slack || type === SymbolType.Error) {
-                    return pair.first;
-                }
-            }
-            return INVALID_SYMBOL;
-        };
-        /**
-         * Returns a new Symbol of the given type.
-         *
-         * @private
-         */
-        Solver.prototype._makeSymbol = function (type) {
-            return new Symbol(type, this._idTick++);
-        };
-        return Solver;
-    })();
-    kiwi.Solver = Solver;
-    /**
-     * Test whether a value is approximately zero.
-     * @private
-     */
-    function nearZero(value) {
-        var eps = 1.0e-8;
-        return value < 0.0 ? -value < eps : value < eps;
-    }
-    /**
-     * An internal function for creating a constraint map.
-     * @private
-     */
-    function createCnMap() {
-        return kiwi.createMap(kiwi.Constraint.Compare);
-    }
-    /**
-     * An internal function for creating a row map.
-     * @private
-     */
-    function createRowMap() {
-        return kiwi.createMap(Symbol.Compare);
-    }
-    /**
-     * An internal function for creating a variable map.
-     * @private
-     */
-    function createVarMap() {
-        return kiwi.createMap(kiwi.Variable.Compare);
-    }
-    /**
-     * An internal function for creating an edit map.
-     * @private
-     */
-    function createEditMap() {
-        return kiwi.createMap(kiwi.Variable.Compare);
-    }
-    /**
-     * An enum defining the available symbol types.
-     * @private
-     */
-    var SymbolType;
-    (function (SymbolType) {
-        SymbolType[SymbolType["Invalid"] = 0] = "Invalid";
-        SymbolType[SymbolType["External"] = 1] = "External";
-        SymbolType[SymbolType["Slack"] = 2] = "Slack";
-        SymbolType[SymbolType["Error"] = 3] = "Error";
-        SymbolType[SymbolType["Dummy"] = 4] = "Dummy";
-    })(SymbolType || (SymbolType = {}));
-    /**
-     * An internal class representing a symbol in the solver.
-     * @private
-     */
-    var Symbol = (function () {
-        /**
-         * Construct a new Symbol
-         *
-         * @param [type] The type of the symbol.
-         * @param [id] The unique id number of the symbol.
-         */
-        function Symbol(type, id) {
-            this._id = id;
-            this._type = type;
-        }
-        /**
-         * The static Symbol comparison function.
-         */
-        Symbol.Compare = function (a, b) {
-            return a.id() - b.id();
-        };
-        /**
-         * Returns the unique id number of the symbol.
-         */
-        Symbol.prototype.id = function () {
-            return this._id;
-        };
-        /**
-         * Returns the type of the symbol.
-         */
-        Symbol.prototype.type = function () {
-            return this._type;
-        };
-        return Symbol;
-    })();
-    /**
-     * A static invalid symbol
-     * @private
-     */
-    var INVALID_SYMBOL = new Symbol(SymbolType.Invalid, -1);
-    /**
-     * An internal row class used by the solver.
-     * @private
-     */
-    var Row = (function () {
-        /**
-         * Construct a new Row.
-         */
-        function Row(constant) {
-            if (constant === void 0) { constant = 0.0; }
-            this._cellMap = kiwi.createMap(Symbol.Compare);
-            this._constant = constant;
-        }
-        /**
-         * Returns the mapping of symbols to coefficients.
-         */
-        Row.prototype.cells = function () {
-            return this._cellMap;
-        };
-        /**
-         * Returns the constant for the row.
-         */
-        Row.prototype.constant = function () {
-            return this._constant;
-        };
-        /**
-         * Returns true if the row is a constant value.
-         */
-        Row.prototype.isConstant = function () {
-            return this._cellMap.empty();
-        };
-        /**
-         * Returns true if the Row has all dummy symbols.
-         */
-        Row.prototype.allDummies = function () {
-            var cells = this._cellMap;
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                if (pair.first.type() !== SymbolType.Dummy) {
-                    return false;
-                }
-            }
-            return true;
-        };
-        /**
-         * Create a copy of the row.
-         */
-        Row.prototype.copy = function () {
-            var theCopy = new Row(this._constant);
-            theCopy._cellMap = this._cellMap.copy();
-            return theCopy;
-        };
-        /**
-         * Add a constant value to the row constant.
-         *
-         * Returns the new value of the constant.
-         */
-        Row.prototype.add = function (value) {
-            return this._constant += value;
-        };
-        /**
-         * Insert the symbol into the row with the given coefficient.
-         *
-         * If the symbol already exists in the row, the coefficient
-         * will be added to the existing coefficient. If the resulting
-         * coefficient is zero, the symbol will be removed from the row.
-         */
-        Row.prototype.insertSymbol = function (symbol, coefficient) {
-            if (coefficient === void 0) { coefficient = 1.0; }
-            var pair = this._cellMap.setDefault(symbol, function () { return 0.0; });
-            if (nearZero(pair.second += coefficient)) {
-                this._cellMap.erase(symbol);
-            }
-        };
-        /**
-         * Insert a row into this row with a given coefficient.
-         *
-         * The constant and the cells of the other row will be
-         * multiplied by the coefficient and added to this row. Any
-         * cell with a resulting coefficient of zero will be removed
-         * from the row.
-         */
-        Row.prototype.insertRow = function (other, coefficient) {
-            if (coefficient === void 0) { coefficient = 1.0; }
-            this._constant += other._constant * coefficient;
-            var cells = other._cellMap;
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                this.insertSymbol(pair.first, pair.second * coefficient);
-            }
-        };
-        /**
-         * Remove a symbol from the row.
-         */
-        Row.prototype.removeSymbol = function (symbol) {
-            this._cellMap.erase(symbol);
-        };
-        /**
-         * Reverse the sign of the constant and cells in the row.
-         */
-        Row.prototype.reverseSign = function () {
-            this._constant = -this._constant;
-            var cells = this._cellMap;
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                var pair = cells.itemAt(i);
-                pair.second = -pair.second;
-            }
-        };
-        /**
-         * Solve the row for the given symbol.
-         *
-         * This method assumes the row is of the form
-         * a * x + b * y + c = 0 and (assuming solve for x) will modify
-         * the row to represent the right hand side of
-         * x = -b/a * y - c / a. The target symbol will be removed from
-         * the row, and the constant and other cells will be multiplied
-         * by the negative inverse of the target coefficient.
-         *
-         * The given symbol *must* exist in the row.
-         */
-        Row.prototype.solveFor = function (symbol) {
-            var cells = this._cellMap;
-            var pair = cells.erase(symbol);
-            var coeff = -1.0 / pair.second;
-            this._constant *= coeff;
-            for (var i = 0, n = cells.size(); i < n; ++i) {
-                cells.itemAt(i).second *= coeff;
-            }
-        };
-        /**
-         * Solve the row for the given symbols.
-         *
-         * This method assumes the row is of the form
-         * x = b * y + c and will solve the row such that
-         * y = x / b - c / b. The rhs symbol will be removed from the
-         * row, the lhs added, and the result divided by the negative
-         * inverse of the rhs coefficient.
-         *
-         * The lhs symbol *must not* exist in the row, and the rhs
-         * symbol must* exist in the row.
-         */
-        Row.prototype.solveForEx = function (lhs, rhs) {
-            this.insertSymbol(lhs, -1.0);
-            this.solveFor(rhs);
-        };
-        /**
-         * Returns the coefficient for the given symbol.
-         */
-        Row.prototype.coefficientFor = function (symbol) {
-            var pair = this._cellMap.find(symbol);
-            return pair !== undefined ? pair.second : 0.0;
-        };
-        /**
-         * Substitute a symbol with the data from another row.
-         *
-         * Given a row of the form a * x + b and a substitution of the
-         * form x = 3 * y + c the row will be updated to reflect the
-         * expression 3 * a * y + a * c + b.
-         *
-         * If the symbol does not exist in the row, this is a no-op.
-         */
-        Row.prototype.substitute = function (symbol, row) {
-            var pair = this._cellMap.erase(symbol);
-            if (pair !== undefined) {
-                this.insertRow(row, pair.second);
-            }
-        };
-        return Row;
-    })();
-})(kiwi || (kiwi = {}));
-/*-----------------------------------------------------------------------------
-| Copyright (c) 2014, Nucleic Development Team.
-|
-| Distributed under the terms of the Modified BSD License.
-|
-| The full license is in the file COPYING.txt, distributed with this software.
-|----------------------------------------------------------------------------*/
-/// <reference path="constraint.ts"/>
-/// <reference path="expression.ts"/>
-/// <reference path="maptype.ts"/>
-/// <reference path="solver.ts"/>
-/// <reference path="strength.ts"/>
-/// <reference path="variable.ts"/>
-
-return kiwi;
-
-}));
-
-},{}]},{},[1])(1)
-});
\ No newline at end of file
diff --git a/dist/autolayout.min.js b/dist/autolayout.min.js
deleted file mode 100644
index 638b4a6..0000000
--- a/dist/autolayout.min.js
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
-* AutoLayout.js is licensed under the MIT license. If a copy of the
-* MIT-license was not distributed with this file, You can obtain one at:
-* http://opensource.org/licenses/mit-license.html.
-*
-* @author: Hein Rutjes (IjzerenHein)
-* @license MIT
-* @copyright Gloey Apps, 2017
-*
-* @library autolayout.js
-* @version 0.7.0
-*/
-/**
-* Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)
-* Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros
-*
-* Use of this source code is governed by the LGPL, which can be found in the
-* COPYING.LGPL file.
-*/
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.AutoLayout = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-"use strict";function _classCallCheck(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function _processEqualSpacer(t,e){t.equalSpacerIndex=t.equalSpacerIndex||1;var r="_~"+t.lineIndex+":"+t.equalSpacerIndex+"~";t.equalSpacerIndex>1&&t.constraints.push({view1:"_~"+t.lineIndex+":1~",attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:r,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority}),t.equalSpacerIndex++,t.relation.view||t.relation.multiplier&&1!==t.relation.multiplier?(t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:t.relation.view,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority,multiplier:t.relation.multiplier}),t.relation.multiplier=void 0):t.relation.constant&&(t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:Relation.EQU,view2:null,attr2:Attribute.CONST,priority:t.relation.priority,constant:t.relation.constant}),t.relation.constant=void 0);for(var i=0;i<t.prevViews.length;i++){var n=t.prevViews[i];switch(t.orientation){case Orientation.HORIZONTAL:t.prevAttr=n!==e?Attribute.RIGHT:Attribute.LEFT,t.curAttr=Attribute.LEFT;break;case Orientation.VERTICAL:t.prevAttr=n!==e?Attribute.BOTTOM:Attribute.TOP,t.curAttr=Attribute.TOP;break;case Orientation.ZINDEX:t.prevAttr=Attribute.ZINDEX,t.curAttr=Attribute.ZINDEX,t.relation.constant=n!==e?"default":0}t.constraints.push({view1:n,attr1:t.prevAttr,relation:t.relation.relation,view2:r,attr2:t.curAttr,priority:t.relation.priority})}t.prevViews=[r]}function _processProportionalSpacer(t,e){t.proportionalSpacerIndex=t.proportionalSpacerIndex||1;var r="_-"+t.lineIndex+":"+t.proportionalSpacerIndex+"-";t.proportionalSpacerIndex++,t.constraints.push({view1:r,attr1:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,relation:t.relation.relation||Relation.EQU,view2:t.relation.view,attr2:t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,priority:t.relation.priority,multiplier:t.relation.multiplier}),t.relation.multiplier=void 0;for(var i=0;i<t.prevViews.length;i++){var n=t.prevViews[i];switch(t.orientation){case Orientation.HORIZONTAL:t.prevAttr=n!==e?Attribute.RIGHT:Attribute.LEFT,t.curAttr=Attribute.LEFT;break;case Orientation.VERTICAL:t.prevAttr=n!==e?Attribute.BOTTOM:Attribute.TOP,t.curAttr=Attribute.TOP;break;case Orientation.ZINDEX:t.prevAttr=Attribute.ZINDEX,t.curAttr=Attribute.ZINDEX,t.relation.constant=n!==e?"default":0}t.constraints.push({view1:n,attr1:t.prevAttr,relation:t.relation.relation,view2:r,attr2:t.curAttr,priority:t.relation.priority})}t.prevViews=[r]}function _processStackView(t,e,r){for(var i=void 0,n=1;n<=4;n*=2)if(r.orientations&n&&r.stack.orientation!==n&&!(r.stack.processedOrientations&n)){r.stack.processedOrientations=r.stack.processedOrientations|n,i=i||{name:e,type:"stack"};for(var a=0,s=r.stack.subViews.length;a<s;a++)n===Orientation.ZINDEX?t.constraints.push({view1:i,attr1:Attribute.ZINDEX,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:Attribute.ZINDEX}):(t.constraints.push({view1:i,attr1:n===Orientation.VERTICAL?Attribute.HEIGHT:Attribute.WIDTH,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:n===Orientation.VERTICAL?Attribute.HEIGHT:Attribute.WIDTH}),t.constraints.push({view1:i,attr1:n===Orientation.VERTICAL?Attribute.TOP:Attribute.LEFT,relation:Relation.EQU,view2:r.stack.subViews[a],attr2:n===Orientation.VERTICAL?Attribute.TOP:Attribute.LEFT}))}}function _getRange(t,e){if(e===!0&&(e=t.match(/\.\.\d+$/),e&&(t=t.substring(0,t.length-e[0].length),e=parseInt(e[0].substring(2)))),!e)return[t];var r,i=t.match(/\d+$/),n=[];if(i)for(t=t.substring(0,t.length-i[0].length),r=parseInt(i);r<=e;r++)n.push(t+r);else for(n.push(t),r=2;r<=e;r++)n.push(t+r);return n}function _processCascade(t,e,r){var i=r?r.view:null,n=[],a=[],s=void 0;i&&(e.push({view:i}),a.push(i));for(var o=0;o<e.length;o++){var u=e[o];if(!Array.isArray(u)&&u.hasOwnProperty("view")||Array.isArray(u)&&u[0].view&&!u[0].relation)for(var c=Array.isArray(u)?u:[u],l=0;l<c.length;l++){u=c[l];for(var h=","===u?[]:u.view?_getRange(u.view,u.range):[null],p=0;p<h.length;p++){var f=h[p];if(a.push(f),f!==i&&(n.push(f),s=t.subViews[f],s||(s={orientations:0},t.subViews[f]=s),s.orientations=s.orientations|t.orientation,s.stack&&_processStackView(t,f,s)),void 0!==t.prevViews&&void 0!==f&&t.relation&&"none"!==t.relation.relation)for(var v=0;v<t.prevViews.length;v++){var d=t.prevViews[v];switch(t.orientation){case 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g=0;g<A.length;g++)t.prevAttr=t.horizontal?Attribute.WIDTH:Attribute.HEIGHT,t.curAttr=A[g].view||A[g].multiplier?A[g].attribute||t.prevAttr:A[g].variable?Attribute.VARIABLE:Attribute.CONST,t.constraints.push({view1:f,attr1:t.prevAttr,relation:A[g].relation,view2:A[g].view,attr2:t.curAttr,multiplier:A[g].multiplier,constant:A[g].constant,priority:A[g].priority});u.cascade&&_processCascade(t,u.cascade,u)}}else","!==u&&(t.prevViews=a,a=[],t.relation=u[0],void 0!==t.prevViews&&(t.relation.equalSpacing&&_processEqualSpacer(t,i),t.relation.multiplier&&_processProportionalSpacer(t,i)))}if(i){if(s=t.subViews[i]){if(s.stack){var b=new Error('A stack named "'+i+'" has already been created');throw b.column=r.$parserOffset+1,b}}else s={orientations:t.orientation},t.subViews[i]=s;s.stack={orientation:t.orientation,processedOrientations:t.orientation,subViews:n},_processStackView(t,i,s)}}function _getConst(t,e){var r=new c.Variable({value:e});return this._solver.addConstraint(new c.StayConstraint(r,c.Strength.required,0)),r}function _getSubView(t){return t?t.name?(this._subViews[t.name]=this._subViews[t.name]||new SubView({name:t.name,solver:this._solver}),this._subViews[t.name]._type=this._subViews[t.name]._type||t.type,this._subViews[t.name]):(this._subViews[t]=this._subViews[t]||new SubView({name:t,solver:this._solver}),this._subViews[t]):this._parentSubView}function _getSpacing(t){var e=4;if(t.view1||"left"!==t.attr1)if(t.view1||"top"!==t.attr1)if(t.view2||"right"!==t.attr2)if(t.view2||"bottom"!==t.attr2)switch(t.attr1){case"left":case"right":case"centerX":case"leading":case"trailing":e=4;break;case"zIndex":e=6;break;default:e=5}else e=2;else e=1;else e=0;else e=3;return this._spacingVars=this._spacingVars||new Array(7),this._spacingExpr=this._spacingExpr||new Array(7),this._spacingVars[e]||(this._spacingVars[e]=new c.Variable,this._solver.addEditVar(this._spacingVars[e]),this._spacingExpr[e]=c.minus(0,this._spacingVars[e]),this._solver.suggestValue(this._spacingVars[e],this._spacing[e])),this._spacingExpr[e]}function _addConstraint(t){var e=void 0,r=void 0!==t.multiplier?t.multiplier:1,i=void 0!==t.constant?t.constant:0;"default"===i&&(i=_getSpacing.call(this,t));var n=_getSubView.call(this,t.view1)._getAttr(t.attr1),a=void 0;t.attr2===Attribute.CONST?a=_getConst.call(this,void 0,t.constant):(a=_getSubView.call(this,t.view2)._getAttr(t.attr2),1!==r&&i?a=c.plus(c.times(a,r),i):i?a=c.plus(a,i):1!==r&&(a=c.times(a,r)));var s=void 0!==t.priority&&t.priority<1e3?new c.Strength("priority",0,t.priority,1e3):defaultPriorityStrength;switch(t.relation){case Relation.EQU:e=new c.Equation(n,a,s);break;case Relation.GEQ:e=new c.Inequality(n,c.GEQ,a,s);break;case Relation.LEQ:e=new c.Inequality(n,c.LEQ,a,s);break;default:throw"Invalid relation specified: "+t.relation}this._solver.addConstraint(e)}function 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this._name}},{key:"left",get:function(){return this._getAttrValue(Attribute.LEFT)}},{key:"right",get:function(){return this._getAttrValue(Attribute.RIGHT)}},{key:"width",get:function(){return this._getAttrValue(Attribute.WIDTH)}},{key:"height",get:function(){return this._getAttrValue(Attribute.HEIGHT)}},{key:"intrinsicWidth",get:function(){return this._intrinsicWidth},set:function(t){if(void 0!==t&&t!==this._intrinsicWidth){var e=this._getAttr(Attribute.WIDTH);void 0===this._intrinsicWidth&&this._solver.addEditVar(e,new c.Strength("required",this._name?998:999,1e3,1e3)),this._intrinsicWidth=t,this._solver.suggestValue(e,t),this._solver.resolve()}}},{key:"intrinsicHeight",get:function(){return this._intrinsicHeight},set:function(t){if(void 0!==t&&t!==this._intrinsicHeight){var e=this._getAttr(Attribute.HEIGHT);void 0===this._intrinsicHeight&&this._solver.addEditVar(e,new c.Strength("required",this._name?998:999,1e3,1e3)),this._intrinsicHeight=t,this._solver.suggestValue(e,t),this._solver.resolve()}}},{key:"top",get:function(){return this._getAttrValue(Attribute.TOP)}},{key:"bottom",get:function(){return this._getAttrValue(Attribute.BOTTOM)}},{key:"centerX",get:function(){return this._getAttrValue(Attribute.CENTERX)}},{key:"centerY",get:function(){return this._getAttrValue(Attribute.CENTERY)}},{key:"zIndex",get:function(){return this._getAttrValue(Attribute.ZINDEX)}},{key:"type",get:function(){return this._type}}]),t}(),defaultPriorityStrength=new c.Strength("defaultPriority",0,1e3,1e3),View=function(){function t(e){_classCallCheck(this,t),this._solver=new c.SimplexSolver,this._subViews={},this._parentSubView=new SubView({solver:this._solver}),this.setSpacing(e&&void 0!==e.spacing?e.spacing:8),e&&(void 0===e.width&&void 0===e.height||this.setSize(e.width,e.height),e.constraints&&this.addConstraints(e.constraints))}return _createClass(t,[{key:"setSize",value:function(t,e){return this._parentSubView.intrinsicWidth=t,this._parentSubView.intrinsicHeight=e,this}},{key:"setSpacing",value:function(t){switch(Array.isArray(t)?t.length:-1){case-1:t=[t,t,t,t,t,t,1];break;case 1:t=[t[0],t[0],t[0],t[0],t[0],t[0],1];break;case 2:t=[t[1],t[0],t[1],t[0],t[0],t[1],1];break;case 3:t=[t[1],t[0],t[1],t[0],t[0],t[1],t[2]];break;case 6:t=[t[0],t[1],t[2],t[3],t[4],t[5],1];break;case 7:break;default:throw"Invalid spacing syntax"}if(!_compareSpacing(this._spacing,t)&&(this._spacing=t,this._spacingVars)){for(var e=0;e<this._spacingVars.length;e++)this._spacingVars[e]&&this._solver.suggestValue(this._spacingVars[e],this._spacing[e]);this._solver.resolve()}return this}},{key:"addConstraint",value:function(t){return _addConstraint.call(this,t),this}},{key:"addConstraints",value:function(t){for(var e=0;e<t.length;e++)_addConstraint.call(this,t[e]);return this}},{key:"width",get:function(){return this._parentSubView.intrinsicWidth}},{key:"height",get:function(){return this._parentSubView.intrinsicHeight}},{key:"fittingWidth",get:function(){return this._parentSubView.width}},{key:"fittingHeight",get:function(){return this._parentSubView.height}},{key:"subViews",get:function(){return this._subViews}}]),t}(),AutoLayout={Attribute:Attribute,Relation:Relation,Priority:Priority,VisualFormat:VisualFormat,View:View,SubView:SubView};module.exports=AutoLayout;
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t.Expression),this._stkCedcns=[0],t.trace&&t.traceprint("objective expr == "+this.rows.get(this._objective))},addLowerBound:function(e,n){var i=new t.Inequality(e,t.GEQ,new t.Expression(n));return this.addConstraint(i)},addUpperBound:function(e,n){var i=new t.Inequality(e,t.LEQ,new t.Expression(n));return this.addConstraint(i)},addBounds:function(t,e,n){return this.addLowerBound(t,e),this.addUpperBound(t,n),this},add:function(){for(var t=0;arguments.length>t;t++)this.addConstraint(arguments[t]);return this},addConstraint:function(e){t.trace&&t.fnenterprint("addConstraint: "+e);var n=Array(2),i=Array(1),r=this.newExpression(e,n,i);if(i=i[0],this.tryAddingDirectly(r)||this.addWithArtificialVariable(r),this._fNeedsSolving=!0,e.isEditConstraint){var s=this._editVarMap.size,a=n[0],l=n[1];!a instanceof t.SlackVariable&&console.warn("cvEplus not a slack variable =",a),!l instanceof t.SlackVariable&&console.warn("cvEminus not a slack variable =",l),t.debug&&console.log("new c.EditInfo("+e+", "+a+", "+l+", "+i+", "+s+")");var o=new t.EditInfo(e,a,l,i,s);this._editVarMap.set(e.variable,o),this._editVarList[s]={v:e.variable,info:o}}return this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},addConstraintNoException:function(e){t.trace&&t.fnenterprint("addConstraintNoException: "+e);try{return this.addConstraint(e),!0}catch(t){return!1}},addEditVar:function(e,n){return t.trace&&t.fnenterprint("addEditVar: "+e+" @ "+n),this.addConstraint(new t.EditConstraint(e,n||t.Strength.strong))},beginEdit:function(){return t.assert(this._editVarMap.size>0,"_editVarMap.size > 0"),this._infeasibleRows.clear(),this._resetStayConstants(),this._stkCedcns.push(this._editVarMap.size),this},endEdit:function(){return t.assert(this._editVarMap.size>0,"_editVarMap.size > 0"),this.resolve(),this._stkCedcns.pop(),this.removeEditVarsTo(this._stkCedcns[this._stkCedcns.length-1]),this},removeAllEditVars:function(){return this.removeEditVarsTo(0)},removeEditVarsTo:function(e){try{for(var n=this._editVarList.length,i=e;n>i;i++)this._editVarList[i]&&this.removeConstraint(this._editVarMap.get(this._editVarList[i].v).constraint);return this._editVarList.length=e,t.assert(this._editVarMap.size==e,"_editVarMap.size == n"),this}catch(e){throw new t.InternalError("Constraint not found in removeEditVarsTo")}},addPointStays:function(e){return t.trace&&console.log("addPointStays",e),e.forEach(function(t,e){this.addStay(t.x,r,Math.pow(2,e)),this.addStay(t.y,r,Math.pow(2,e))},this),this},addStay:function(e,n,i){var s=new t.StayConstraint(e,n||r,i||1);return this.addConstraint(s)},removeConstraint:function(t){return this.removeConstraintInternal(t),this},removeConstraintInternal:function(e){t.trace&&t.fnenterprint("removeConstraintInternal: "+e),t.trace&&t.traceprint(""+this),this._fNeedsSolving=!0,this._resetStayConstants();var n=this.rows.get(this._objective),i=this._errorVars.get(e);t.trace&&t.traceprint("eVars == "+i),null!=i&&i.each(function(r){var s=this.rows.get(r);null==s?n.addVariable(r,-e.weight*e.strength.symbolicWeight.value,this._objective,this):n.addExpression(s,-e.weight*e.strength.symbolicWeight.value,this._objective,this),t.trace&&t.traceprint("now eVars == "+i)},this);var r=this._markerVars.get(e);if(this._markerVars.delete(e),null==r)throw new t.InternalError("Constraint not found in removeConstraintInternal");if(t.trace&&t.traceprint("Looking to remove var "+r),null==this.rows.get(r)){var s=this.columns.get(r);t.trace&&t.traceprint("Must pivot -- columns are "+s);var a=null,l=0;s.each(function(e){if(e.isRestricted){var n=this.rows.get(e),i=n.coefficientFor(r);if(t.trace&&t.traceprint("Marker "+r+"'s coefficient in "+n+" is "+i),0>i){var s=-n.constant/i;(null==a||l>s||t.approx(s,l)&&e.hashCode<a.hashCode)&&(l=s,a=e)}}},this),null==a&&(t.trace&&t.traceprint("exitVar is still null"),s.each(function(t){if(t.isRestricted){var e=this.rows.get(t),n=e.coefficientFor(r),i=e.constant/n;(null==a||l>i)&&(l=i,a=t)}},this)),null==a&&(0==s.size?this.removeColumn(r):s.escapingEach(function(t){return t!=this._objective?(a=t,{brk:!0}):void 0},this)),null!=a&&this.pivot(r,a)}if(null!=this.rows.get(r)&&this.removeRow(r),null!=i&&i.each(function(t){t!=r&&this.removeColumn(t)},this),e.isStayConstraint){if(null!=i)for(var o=0;this._stayPlusErrorVars.length>o;o++)i.delete(this._stayPlusErrorVars[o]),i.delete(this._stayMinusErrorVars[o])}else if(e.isEditConstraint){t.assert(null!=i,"eVars != null");var u=this._editVarMap.get(e.variable);this.removeColumn(u.editMinus),this._editVarMap.delete(e.variable)}return null!=i&&this._errorVars.delete(i),this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},reset:function(){throw t.trace&&t.fnenterprint("reset"),new t.InternalError("reset not implemented")},resolveArray:function(e){t.trace&&t.fnenterprint("resolveArray"+e);var n=e.length;this._editVarMap.each(function(t,i){var r=i.index;n>r&&this.suggestValue(t,e[r])},this),this.resolve()},resolvePair:function(t,e){this.suggestValue(this._editVarList[0].v,t),this.suggestValue(this._editVarList[1].v,e),this.resolve()},resolve:function(){t.trace&&t.fnenterprint("resolve()"),this.dualOptimize(),this._setExternalVariables(),this._infeasibleRows.clear(),this._resetStayConstants()},suggestValue:function(e,n){t.trace&&console.log("suggestValue("+e+", "+n+")");var i=this._editVarMap.get(e);if(!i)throw new t.Error("suggestValue for variable "+e+", but var is not an edit variable");var r=n-i.prevEditConstant;return i.prevEditConstant=n,this.deltaEditConstant(r,i.editPlus,i.editMinus),this},solve:function(){return this._fNeedsSolving&&(this.optimize(this._objective),this._setExternalVariables()),this},setEditedValue:function(e,n){if(!this.columnsHasKey(e)&&null==this.rows.get(e))return e.value=n,this;if(!t.approx(n,e.value)){this.addEditVar(e),this.beginEdit();try{this.suggestValue(e,n)}catch(e){throw new t.InternalError("Error in setEditedValue")}this.endEdit()}return this},addVar:function(e){if(!this.columnsHasKey(e)&&null==this.rows.get(e)){try{this.addStay(e)}catch(e){throw new t.InternalError("Error in addVar -- required failure is impossible")}t.trace&&t.traceprint("added initial stay on "+e)}return this},getInternalInfo:function(){var t=n.getInternalInfo.call(this);return t+="\nSolver info:\n",t+="Stay Error Variables: ",t+=this._stayPlusErrorVars.length+this._stayMinusErrorVars.length,t+=" ("+this._stayPlusErrorVars.length+" +, ",t+=this._stayMinusErrorVars.length+" -)\n",t+="Edit Variables: "+this._editVarMap.size,t+="\n"},getDebugInfo:function(){return""+this+this.getInternalInfo()+"\n"},toString:function(){var t=n.getInternalInfo.call(this);return t+="\n_stayPlusErrorVars: ",t+="["+this._stayPlusErrorVars+"]",t+="\n_stayMinusErrorVars: 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null"),this.removeColumn(n),this.removeRow(i)},tryAddingDirectly:function(e){t.trace&&t.fnenterprint("tryAddingDirectly: "+e);var n=this.chooseSubject(e);return null==n?(t.trace&&t.fnexitprint("returning false"),!1):(e.newSubject(n),this.columnsHasKey(n)&&this.substituteOut(n,e),this.addRow(n,e),t.trace&&t.fnexitprint("returning true"),!0)},chooseSubject:function(e){t.trace&&t.fnenterprint("chooseSubject: "+e);var n=null,i=!1,r=!1,s=e.terms,a=s.escapingEach(function(t,e){if(i){if(!t.isRestricted&&!this.columnsHasKey(t))return{retval:t}}else if(t.isRestricted){if(!r&&!t.isDummy&&0>e){var s=this.columns.get(t);(null==s||1==s.size&&this.columnsHasKey(this._objective))&&(n=t,r=!0)}}else n=t,i=!0},this);if(a&&void 0!==a.retval)return a.retval;if(null!=n)return n;var l=0,a=s.escapingEach(function(t,e){return t.isDummy?void(this.columnsHasKey(t)||(n=t,l=e)):{retval:null}},this);if(a&&void 0!==a.retval)return a.retval;if(!t.approx(e.constant,0))throw new t.RequiredFailure;return l>0&&e.multiplyMe(-1),n},deltaEditConstant:function(e,n,i){t.trace&&t.fnenterprint("deltaEditConstant :"+e+", "+n+", "+i);var r=this.rows.get(n);if(null!=r)return r.constant+=e,void(0>r.constant&&this._infeasibleRows.add(n));var s=this.rows.get(i);if(null!=s)return s.constant+=-e,void(0>s.constant&&this._infeasibleRows.add(i));var a=this.columns.get(i);a||console.log("columnVars is null -- tableau is:\n"+this),a.each(function(t){var n=this.rows.get(t),r=n.coefficientFor(i);n.constant+=r*e,t.isRestricted&&0>n.constant&&this._infeasibleRows.add(t)},this)},dualOptimize:function(){t.trace&&t.fnenterprint("dualOptimize:");for(var e=this.rows.get(this._objective);this._infeasibleRows.size;){var n=this._infeasibleRows.values()[0];this._infeasibleRows.delete(n);var i=null,r=this.rows.get(n);if(r&&0>r.constant){var s,a=Number.MAX_VALUE,l=r.terms;if(l.each(function(n,r){if(r>0&&n.isPivotable){var 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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","var c = require('cassowary/bin/c')\n'use strict';\n\n/**\n * Layout attributes.\n * @enum {String}\n */\nvar Attribute = {\n    CONST: 'const',\n    NOTANATTRIBUTE: 'const',\n    VARIABLE: 'var',\n    LEFT: 'left',\n    RIGHT: 'right',\n    TOP: 'top',\n    BOTTOM: 'bottom',\n    WIDTH: 'width',\n    HEIGHT: 'height',\n    CENTERX: 'centerX',\n    CENTERY: 'centerY',\n    /*LEADING: 'leading',\n    TRAILING: 'trailing'*/\n    /** Used by the extended VFL syntax. */\n    ZINDEX: 'zIndex'\n};\n\n/**\n * Relation types.\n * @enum {String}\n */\nvar Relation = {\n    /** Less than or equal */\n    LEQ: 'leq',\n    /** Equal */\n    EQU: 'equ',\n    /** Greater than or equal */\n    GEQ: 'geq'\n};\n\n/**\n * Layout priorities.\n * @enum {String}\n */\nvar Priority = {\n    REQUIRED: 1000,\n    DEFAULTHIGH: 750,\n    DEFAULTLOW: 250\n    //FITTINGSIZELEVEL: 50,\n};\n\nvar parser = (function() {\n  /*\n   * Generated by PEG.js 0.8.0.\n   *\n   * http://pegjs.majda.cz/\n   */\n\n  function peg$subclass(child, parent) {\n    function ctor() { this.constructor = child; }\n    ctor.prototype = parent.prototype;\n    child.prototype = new ctor();\n  }\n\n  function SyntaxError(message, expected, found, offset, line, column) {\n    this.message  = message;\n    this.expected = expected;\n    this.found    = found;\n    this.offset   = offset;\n    this.line     = line;\n    this.column   = column;\n\n    this.name     = \"SyntaxError\";\n  }\n\n  peg$subclass(SyntaxError, Error);\n\n  function parse(input) {\n    var options = arguments.length > 1 ? arguments[1] : {},\n\n        peg$FAILED = {},\n\n        peg$startRuleFunctions = { visualFormatString: peg$parsevisualFormatString },\n        peg$startRuleFunction  = peg$parsevisualFormatString,\n\n        peg$c0 = peg$FAILED,\n        peg$c1 = null,\n        peg$c2 = \":\",\n        peg$c3 = { type: \"literal\", value: \":\", description: \"\\\":\\\"\" },\n        peg$c4 = [],\n        peg$c5 = function(o, superto, view, views, tosuper) { return {\n              orientation: o ? o[0] : 'horizontal',\n              cascade: (superto || []).concat(\n                [view],\n                [].concat.apply([], views),\n                (tosuper || [])\n              )\n            }\n          },\n        peg$c6 = \"H\",\n        peg$c7 = { type: \"literal\", value: \"H\", description: \"\\\"H\\\"\" },\n        peg$c8 = \"V\",\n        peg$c9 = { type: \"literal\", value: \"V\", description: \"\\\"V\\\"\" },\n        peg$c10 = function(orient) { return orient == 'H' ? 'horizontal' : 'vertical' },\n        peg$c11 = \"|\",\n        peg$c12 = { type: \"literal\", value: \"|\", description: \"\\\"|\\\"\" },\n        peg$c13 = function() { return { view: null } },\n        peg$c14 = \"[\",\n        peg$c15 = { type: \"literal\", value: \"[\", description: \"\\\"[\\\"\" },\n        peg$c16 = \"]\",\n        peg$c17 = { type: \"literal\", value: \"]\", description: \"\\\"]\\\"\" },\n        peg$c18 = function(view, predicates) { return extend(view, predicates ? { constraints: predicates } : {}) },\n        peg$c19 = \"-\",\n        peg$c20 = { type: \"literal\", value: \"-\", description: \"\\\"-\\\"\" },\n        peg$c21 = function(predicateList) { return predicateList },\n        peg$c22 = function() { return [{ relation: 'equ', constant: 'default', $parserOffset: offset() }] },\n        peg$c23 = \"\",\n        peg$c24 = function() { return [{ relation: 'equ', constant: 0, $parserOffset: offset() }] },\n        peg$c25 = function(n) { return [{ relation: 'equ', constant: n, $parserOffset: offset() }] },\n        peg$c26 = \"(\",\n        peg$c27 = { type: \"literal\", value: \"(\", description: \"\\\"(\\\"\" },\n        peg$c28 = \",\",\n        peg$c29 = { type: \"literal\", value: \",\", description: \"\\\",\\\"\" },\n        peg$c30 = \")\",\n        peg$c31 = { type: \"literal\", value: \")\", description: \"\\\")\\\"\" },\n        peg$c32 = function(p, ps) { return [p].concat(ps.map(function(p){ return p[1] })) },\n        peg$c33 = \"@\",\n        peg$c34 = { type: \"literal\", value: \"@\", description: \"\\\"@\\\"\" },\n        peg$c35 = function(r, o, p) { return extend({ relation: 'equ' }, (r || {}), o, (p ? p[1]: {})) },\n        peg$c36 = \"==\",\n        peg$c37 = { type: \"literal\", value: \"==\", description: \"\\\"==\\\"\" },\n        peg$c38 = function() { return { relation: 'equ', $parserOffset: offset() } },\n        peg$c39 = \"<=\",\n        peg$c40 = { type: \"literal\", value: \"<=\", description: \"\\\"<=\\\"\" },\n        peg$c41 = function() { return { relation: 'leq', $parserOffset: offset() } },\n        peg$c42 = \">=\",\n        peg$c43 = { type: \"literal\", value: \">=\", description: \"\\\">=\\\"\" },\n        peg$c44 = function() { return { relation: 'geq', $parserOffset: offset() } },\n        peg$c45 = /^[0-9]/,\n        peg$c46 = { type: \"class\", value: \"[0-9]\", description: \"[0-9]\" },\n        peg$c47 = function(digits) { return { priority: parseInt(digits.join(\"\"), 10) } },\n        peg$c48 = function(n) { return { constant: n } },\n        peg$c49 = /^[a-zA-Z_]/,\n        peg$c50 = { type: \"class\", value: \"[a-zA-Z_]\", description: \"[a-zA-Z_]\" },\n        peg$c51 = /^[a-zA-Z0-9_]/,\n        peg$c52 = { type: \"class\", value: \"[a-zA-Z0-9_]\", description: \"[a-zA-Z0-9_]\" },\n        peg$c53 = function(f, v) { return { view: f + v } },\n        peg$c54 = \".\",\n        peg$c55 = { type: \"literal\", value: \".\", description: \"\\\".\\\"\" },\n        peg$c56 = function(digits, decimals) { return parseFloat(digits.concat(\".\").concat(decimals).join(\"\"), 10); },\n        peg$c57 = function(digits) { return parseInt(digits.join(\"\"), 10); },\n\n        peg$currPos          = 0,\n        peg$reportedPos      = 0,\n        peg$cachedPos        = 0,\n        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },\n        peg$maxFailPos       = 0,\n        peg$maxFailExpected  = [],\n        peg$silentFails      = 0,\n\n        peg$result;\n\n    if (\"startRule\" in options) {\n      if (!(options.startRule in peg$startRuleFunctions)) {\n        throw new Error(\"Can't start parsing from rule \\\"\" + options.startRule + \"\\\".\");\n      }\n\n      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];\n    }\n\n    function text() {\n      return input.substring(peg$reportedPos, peg$currPos);\n    }\n\n    function offset() {\n      return peg$reportedPos;\n    }\n\n    function line() {\n      return peg$computePosDetails(peg$reportedPos).line;\n    }\n\n    function column() {\n      return peg$computePosDetails(peg$reportedPos).column;\n    }\n\n    function expected(description) {\n      throw peg$buildException(\n        null,\n        [{ type: \"other\", description: description }],\n        peg$reportedPos\n      );\n    }\n\n    function error(message) {\n      throw peg$buildException(message, null, peg$reportedPos);\n    }\n\n    function peg$computePosDetails(pos) {\n      function advance(details, startPos, endPos) {\n        var p, ch;\n\n        for (p = startPos; p < endPos; p++) {\n          ch = input.charAt(p);\n          if (ch === \"\\n\") {\n            if (!details.seenCR) { details.line++; }\n            details.column = 1;\n            details.seenCR = false;\n          } else if (ch === \"\\r\" || ch === \"\\u2028\" || ch === \"\\u2029\") {\n            details.line++;\n            details.column = 1;\n            details.seenCR = true;\n          } else {\n            details.column++;\n            details.seenCR = false;\n          }\n        }\n      }\n\n      if (peg$cachedPos !== pos) {\n        if (peg$cachedPos > pos) {\n          peg$cachedPos = 0;\n          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };\n        }\n        advance(peg$cachedPosDetails, peg$cachedPos, pos);\n        peg$cachedPos = pos;\n      }\n\n      return peg$cachedPosDetails;\n    }\n\n    function peg$fail(expected) {\n      if (peg$currPos < peg$maxFailPos) { return; }\n\n      if (peg$currPos > peg$maxFailPos) {\n        peg$maxFailPos = peg$currPos;\n        peg$maxFailExpected = [];\n      }\n\n      peg$maxFailExpected.push(expected);\n    }\n\n    function peg$buildException(message, expected, pos) {\n      function cleanupExpected(expected) {\n        var i = 1;\n\n        expected.sort(function(a, b) {\n          if (a.description < b.description) {\n            return -1;\n          } else if (a.description > b.description) {\n            return 1;\n          } else {\n            return 0;\n          }\n        });\n\n        while (i < expected.length) {\n          if (expected[i - 1] === expected[i]) {\n            expected.splice(i, 1);\n          } else {\n            i++;\n          }\n        }\n      }\n\n      function buildMessage(expected, found) {\n        function stringEscape(s) {\n          function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }\n\n          return s\n            .replace(/\\\\/g,   '\\\\\\\\')\n            .replace(/\"/g,    '\\\\\"')\n            .replace(/\\x08/g, '\\\\b')\n            .replace(/\\t/g,   '\\\\t')\n            .replace(/\\n/g,   '\\\\n')\n            .replace(/\\f/g,   '\\\\f')\n            .replace(/\\r/g,   '\\\\r')\n            .replace(/[\\x00-\\x07\\x0B\\x0E\\x0F]/g, function(ch) { return '\\\\x0' + hex(ch); })\n            .replace(/[\\x10-\\x1F\\x80-\\xFF]/g,    function(ch) { return '\\\\x'  + hex(ch); })\n            .replace(/[\\u0180-\\u0FFF]/g,         function(ch) { return '\\\\u0' + hex(ch); })\n            .replace(/[\\u1080-\\uFFFF]/g,         function(ch) { return '\\\\u'  + hex(ch); });\n        }\n\n        var expectedDescs = new Array(expected.length),\n            expectedDesc, foundDesc, i;\n\n        for (i = 0; i < expected.length; i++) {\n          expectedDescs[i] = expected[i].description;\n        }\n\n        expectedDesc = expected.length > 1\n          ? expectedDescs.slice(0, -1).join(\", \")\n              + \" or \"\n              + expectedDescs[expected.length - 1]\n          : expectedDescs[0];\n\n        foundDesc = found ? \"\\\"\" + stringEscape(found) + \"\\\"\" : \"end of input\";\n\n        return \"Expected \" + expectedDesc + \" but \" + foundDesc + \" found.\";\n      }\n\n      var posDetails = peg$computePosDetails(pos),\n          found      = pos < input.length ? input.charAt(pos) : null;\n\n      if (expected !== null) {\n        cleanupExpected(expected);\n      }\n\n      return new SyntaxError(\n        message !== null ? message : buildMessage(expected, found),\n        expected,\n        found,\n        pos,\n        posDetails.line,\n        posDetails.column\n      );\n    }\n\n    function peg$parsevisualFormatString() {\n      var s0, s1, s2, s3, s4, s5, s6, s7;\n\n      s0 = peg$currPos;\n      s1 = peg$currPos;\n      s2 = peg$parseorientation();\n      if (s2 !== peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 58) {\n          s3 = peg$c2;\n          peg$currPos++;\n        } else {\n          s3 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c3); }\n        }\n        if (s3 !== peg$FAILED) {\n          s2 = [s2, s3];\n          s1 = s2;\n        } else {\n          peg$currPos = s1;\n          s1 = peg$c0;\n        }\n      } else {\n        peg$currPos = s1;\n        s1 = peg$c0;\n      }\n      if (s1 === peg$FAILED) {\n        s1 = peg$c1;\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$currPos;\n        s3 = peg$parsesuperview();\n        if (s3 !== peg$FAILED) {\n          s4 = peg$parseconnection();\n          if (s4 !== peg$FAILED) {\n            s3 = [s3, s4];\n            s2 = s3;\n          } else {\n            peg$currPos = s2;\n            s2 = peg$c0;\n          }\n        } else {\n          peg$currPos = s2;\n          s2 = peg$c0;\n        }\n        if (s2 === peg$FAILED) {\n          s2 = peg$c1;\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parseview();\n          if (s3 !== peg$FAILED) {\n            s4 = [];\n            s5 = peg$currPos;\n            s6 = peg$parseconnection();\n            if (s6 !== peg$FAILED) {\n              s7 = peg$parseview();\n              if (s7 !== peg$FAILED) {\n                s6 = [s6, s7];\n                s5 = s6;\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n            } else {\n              peg$currPos = s5;\n              s5 = peg$c0;\n            }\n            while (s5 !== peg$FAILED) {\n              s4.push(s5);\n              s5 = peg$currPos;\n              s6 = peg$parseconnection();\n              if (s6 !== peg$FAILED) {\n                s7 = peg$parseview();\n                if (s7 !== peg$FAILED) {\n                  s6 = [s6, s7];\n                  s5 = s6;\n                } else {\n                  peg$currPos = s5;\n                  s5 = peg$c0;\n                }\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n            }\n            if (s4 !== peg$FAILED) {\n              s5 = peg$currPos;\n              s6 = peg$parseconnection();\n              if (s6 !== peg$FAILED) {\n                s7 = peg$parsesuperview();\n                if (s7 !== peg$FAILED) {\n                  s6 = [s6, s7];\n                  s5 = s6;\n                } else {\n                  peg$currPos = s5;\n                  s5 = peg$c0;\n                }\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n              if (s5 === peg$FAILED) {\n                s5 = peg$c1;\n              }\n              if (s5 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c5(s1, s2, s3, s4, s5);\n                s0 = s1;\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseorientation() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 72) {\n        s1 = peg$c6;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c7); }\n      }\n      if (s1 === peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 86) {\n          s1 = peg$c8;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c9); }\n        }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c10(s1);\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parsesuperview() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 124) {\n        s1 = peg$c11;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c12); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c13();\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parseview() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 91) {\n        s1 = peg$c14;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c15); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseviewName();\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parsepredicateListWithParens();\n          if (s3 === peg$FAILED) {\n            s3 = peg$c1;\n          }\n          if (s3 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 93) {\n              s4 = peg$c16;\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c17); }\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c18(s2, s3);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseconnection() {\n      var s0, s1, s2, s3;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 45) {\n        s1 = peg$c19;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c20); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsepredicateList();\n        if (s2 !== peg$FAILED) {\n          if (input.charCodeAt(peg$currPos) === 45) {\n            s3 = peg$c19;\n            peg$currPos++;\n          } else {\n            s3 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c20); }\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c21(s2);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 45) {\n          s1 = peg$c19;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c20); }\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c22();\n        }\n        s0 = s1;\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          s1 = peg$c23;\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c24();\n          }\n          s0 = s1;\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsepredicateList() {\n      var s0;\n\n      s0 = peg$parsesimplePredicate();\n      if (s0 === peg$FAILED) {\n        s0 = peg$parsepredicateListWithParens();\n      }\n\n      return s0;\n    }\n\n    function peg$parsesimplePredicate() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      s1 = peg$parsenumber();\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c25(s1);\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parsepredicateListWithParens() {\n      var s0, s1, s2, s3, s4, s5, s6;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 40) {\n        s1 = peg$c26;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c27); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsepredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          s4 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 44) {\n            s5 = peg$c28;\n            peg$currPos++;\n          } else {\n            s5 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c29); }\n          }\n          if (s5 !== peg$FAILED) {\n            s6 = peg$parsepredicate();\n            if (s6 !== peg$FAILED) {\n              s5 = [s5, s6];\n              s4 = s5;\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          } else {\n            peg$currPos = s4;\n            s4 = peg$c0;\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            s4 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 44) {\n              s5 = peg$c28;\n              peg$currPos++;\n            } else {\n              s5 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c29); }\n            }\n            if (s5 !== peg$FAILED) {\n              s6 = peg$parsepredicate();\n              if (s6 !== peg$FAILED) {\n                s5 = [s5, s6];\n                s4 = s5;\n              } else {\n                peg$currPos = s4;\n                s4 = peg$c0;\n              }\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 41) {\n              s4 = peg$c30;\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c31); }\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c32(s2, s3);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsepredicate() {\n      var s0, s1, s2, s3, s4, s5;\n\n      s0 = peg$currPos;\n      s1 = peg$parserelation();\n      if (s1 === peg$FAILED) {\n        s1 = peg$c1;\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseobjectOfPredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 64) {\n            s4 = peg$c33;\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c34); }\n          }\n          if (s4 !== peg$FAILED) {\n            s5 = peg$parsepriority();\n            if (s5 !== peg$FAILED) {\n              s4 = [s4, s5];\n              s3 = s4;\n            } else {\n              peg$currPos = s3;\n              s3 = peg$c0;\n            }\n          } else {\n            peg$currPos = s3;\n            s3 = peg$c0;\n          }\n          if (s3 === peg$FAILED) {\n            s3 = peg$c1;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c35(s1, s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parserelation() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c36) {\n        s1 = peg$c36;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c37); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c38();\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.substr(peg$currPos, 2) === peg$c39) {\n          s1 = peg$c39;\n          peg$currPos += 2;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c40); }\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c41();\n        }\n        s0 = s1;\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.substr(peg$currPos, 2) === peg$c42) {\n            s1 = peg$c42;\n            peg$currPos += 2;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c43); }\n          }\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c44();\n          }\n          s0 = s1;\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseobjectOfPredicate() {\n      var s0;\n\n      s0 = peg$parseconstant();\n      if (s0 === peg$FAILED) {\n        s0 = peg$parseviewName();\n      }\n\n      return s0;\n    }\n\n    function peg$parsepriority() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      s1 = [];\n      if (peg$c45.test(input.charAt(peg$currPos))) {\n        s2 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s2 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c46); }\n      }\n      if (s2 !== peg$FAILED) {\n        while (s2 !== peg$FAILED) {\n          s1.push(s2);\n          if (peg$c45.test(input.charAt(peg$currPos))) {\n            s2 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s2 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c46); }\n          }\n        }\n      } else {\n        s1 = peg$c0;\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c47(s1);\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parseconstant() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      s1 = peg$parsenumber();\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c48(s1);\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parseviewName() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = peg$currPos;\n      s2 = [];\n      if (peg$c49.test(input.charAt(peg$currPos))) {\n        s3 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s3 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c50); }\n      }\n      if (s3 !== peg$FAILED) {\n        while (s3 !== peg$FAILED) {\n          s2.push(s3);\n          if (peg$c49.test(input.charAt(peg$currPos))) {\n            s3 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s3 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c50); }\n          }\n        }\n      } else {\n        s2 = peg$c0;\n      }\n      if (s2 !== peg$FAILED) {\n        s2 = input.substring(s1, peg$currPos);\n      }\n      s1 = s2;\n      if (s1 !== peg$FAILED) {\n        s2 = peg$currPos;\n        s3 = [];\n        if (peg$c51.test(input.charAt(peg$currPos))) {\n          s4 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s4 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c52); }\n        }\n        while (s4 !== peg$FAILED) {\n          s3.push(s4);\n          if (peg$c51.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c52); }\n          }\n        }\n        if (s3 !== peg$FAILED) {\n          s3 = input.substring(s2, peg$currPos);\n        }\n        s2 = s3;\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c53(s1, s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsenumber() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = [];\n      if (peg$c45.test(input.charAt(peg$currPos))) {\n        s2 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s2 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c46); }\n      }\n      if (s2 !== peg$FAILED) {\n        while (s2 !== peg$FAILED) {\n          s1.push(s2);\n          if (peg$c45.test(input.charAt(peg$currPos))) {\n            s2 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s2 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c46); }\n          }\n        }\n      } else {\n        s1 = peg$c0;\n      }\n      if (s1 !== peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 46) {\n          s2 = peg$c54;\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c55); }\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          if (peg$c45.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c46); }\n          }\n          if (s4 !== peg$FAILED) {\n            while (s4 !== peg$FAILED) {\n              s3.push(s4);\n              if (peg$c45.test(input.charAt(peg$currPos))) {\n                s4 = input.charAt(peg$currPos);\n                peg$currPos++;\n              } else {\n                s4 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c46); }\n              }\n            }\n          } else {\n            s3 = peg$c0;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c56(s1, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        s1 = [];\n        if (peg$c45.test(input.charAt(peg$currPos))) {\n          s2 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c46); }\n        }\n        if (s2 !== peg$FAILED) {\n          while (s2 !== peg$FAILED) {\n            s1.push(s2);\n            if (peg$c45.test(input.charAt(peg$currPos))) {\n              s2 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s2 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c46); }\n            }\n          }\n        } else {\n          s1 = peg$c0;\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c57(s1);\n        }\n        s0 = s1;\n      }\n\n      return s0;\n    }\n\n\n      function extend(dst) {\n        for (var i = 1; i < arguments.length; i++) {\n          for (var k in arguments[i]) {\n            dst[k] = arguments[i][k];\n          }\n        }\n        return dst;\n      }\n\n\n    peg$result = peg$startRuleFunction();\n\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) {\n      return peg$result;\n    } else {\n      if (peg$result !== peg$FAILED && peg$currPos < input.length) {\n        peg$fail({ type: \"end\", description: \"end of input\" });\n      }\n\n      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);\n    }\n  }\n\n  return {\n    SyntaxError: SyntaxError,\n    parse:       parse\n  };\n})();\n\nvar parserExt = (function() {\n  /*\n   * Generated by PEG.js 0.8.0.\n   *\n   * http://pegjs.majda.cz/\n   */\n\n  function peg$subclass(child, parent) {\n    function ctor() { this.constructor = child; }\n    ctor.prototype = parent.prototype;\n    child.prototype = new ctor();\n  }\n\n  function SyntaxError(message, expected, found, offset, line, column) {\n    this.message  = message;\n    this.expected = expected;\n    this.found    = found;\n    this.offset   = offset;\n    this.line     = line;\n    this.column   = column;\n\n    this.name     = \"SyntaxError\";\n  }\n\n  peg$subclass(SyntaxError, Error);\n\n  function parse(input) {\n    var options = arguments.length > 1 ? arguments[1] : {},\n\n        peg$FAILED = {},\n\n        peg$startRuleFunctions = { visualFormatStringExt: peg$parsevisualFormatStringExt },\n        peg$startRuleFunction  = peg$parsevisualFormatStringExt,\n\n        peg$c0 = peg$FAILED,\n        peg$c1 = \"C:\",\n        peg$c2 = { type: \"literal\", value: \"C:\", description: \"\\\"C:\\\"\" },\n        peg$c3 = [],\n        peg$c4 = null,\n        peg$c5 = function(view, attribute, attributes, comments) { return {\n              type: 'attribute',\n              view: view.view,\n              attributes: [attribute].concat(attributes)\n            }\n          },\n        peg$c6 = function(attr, predicates) { return { attr: attr, predicates:predicates } },\n        peg$c7 = \":\",\n        peg$c8 = { type: \"literal\", value: \":\", description: \"\\\":\\\"\" },\n        peg$c9 = function(o, superto, view, views, tosuper, comments) { return {\n              type: 'vfl',\n              orientation: o ? o[0] : 'horizontal',\n              cascade: (superto || []).concat(\n                view,\n                [].concat.apply([], views),\n                (tosuper || [])\n              )\n            }\n          },\n        peg$c10 = \"HV\",\n        peg$c11 = { type: \"literal\", value: \"HV\", description: \"\\\"HV\\\"\" },\n        peg$c12 = function() { return 'horzvert' },\n        peg$c13 = \"H\",\n        peg$c14 = { type: \"literal\", value: \"H\", description: \"\\\"H\\\"\" },\n        peg$c15 = function() { return 'horizontal' },\n        peg$c16 = \"V\",\n        peg$c17 = { type: \"literal\", value: \"V\", description: \"\\\"V\\\"\" },\n        peg$c18 = function() { return 'vertical' },\n        peg$c19 = \"Z\",\n        peg$c20 = { type: \"literal\", value: \"Z\", description: \"\\\"Z\\\"\" },\n        peg$c21 = function() { return 'zIndex' },\n        peg$c22 = \" \",\n        peg$c23 = { type: \"literal\", value: \" \", description: \"\\\" \\\"\" },\n        peg$c24 = \"//\",\n        peg$c25 = { type: \"literal\", value: \"//\", description: \"\\\"//\\\"\" },\n        peg$c26 = { type: \"any\", description: \"any character\" },\n        peg$c27 = \"|\",\n        peg$c28 = { type: \"literal\", value: \"|\", description: \"\\\"|\\\"\" },\n        peg$c29 = function() { return { view: null } },\n        peg$c30 = \"[\",\n        peg$c31 = { type: \"literal\", value: \"[\", description: \"\\\"[\\\"\" },\n        peg$c32 = \",\",\n        peg$c33 = { type: \"literal\", value: \",\", description: \"\\\",\\\"\" },\n        peg$c34 = \"]\",\n        peg$c35 = { type: \"literal\", value: \"]\", description: \"\\\"]\\\"\" },\n        peg$c36 = function(view, views) { return views.length ? [view].concat([].concat.apply([], views)) : view },\n        peg$c37 = function(view, predicates, cascadedViews) { return extend(extend(view, predicates ? { constraints: predicates } : {}), cascadedViews ? {\n            cascade: cascadedViews\n          } : {}) },\n        peg$c38 = function(views, connection) { return [].concat([].concat.apply([], views),[connection]); },\n        peg$c39 = \"->\",\n        peg$c40 = { type: \"literal\", value: \"->\", description: \"\\\"->\\\"\" },\n        peg$c41 = function() { return [{ relation: 'none' }] },\n        peg$c42 = \"-\",\n        peg$c43 = { type: \"literal\", value: \"-\", description: \"\\\"-\\\"\" },\n        peg$c44 = function(predicateList) { return predicateList },\n        peg$c45 = function() { return [{ relation: 'equ', constant: 'default' }] },\n        peg$c46 = \"~\",\n        peg$c47 = { type: \"literal\", value: \"~\", description: \"\\\"~\\\"\" },\n        peg$c48 = function() { return [{ relation: 'equ', equalSpacing: true }] },\n        peg$c49 = \"\",\n        peg$c50 = function() { return [{ relation: 'equ', constant: 0 }] },\n        peg$c51 = function(p) { return [{ relation: 'equ', multiplier: p.multiplier }] },\n        peg$c52 = function(n) { return [{ relation: 'equ', constant: n }] },\n        peg$c53 = \"(\",\n        peg$c54 = { type: \"literal\", value: \"(\", description: \"\\\"(\\\"\" },\n        peg$c55 = \")\",\n        peg$c56 = { type: \"literal\", value: \")\", description: \"\\\")\\\"\" },\n        peg$c57 = function(p, ps) { return [p].concat(ps.map(function(p){ return p[1] })) },\n        peg$c58 = \"@\",\n        peg$c59 = { type: \"literal\", value: \"@\", description: \"\\\"@\\\"\" },\n        peg$c60 = function(r, o, p) { return extend({ relation: 'equ' }, (r || {}), o, (p ? p[1]: {})) },\n        peg$c61 = function(r, o, p) { return extend({ relation: 'equ', equalSpacing: true }, (r || {}), o, (p ? p[1]: {})) },\n        peg$c62 = \"==\",\n        peg$c63 = { type: \"literal\", value: \"==\", description: \"\\\"==\\\"\" },\n        peg$c64 = function() { return { relation: 'equ' } },\n        peg$c65 = \"<=\",\n        peg$c66 = { type: \"literal\", value: \"<=\", description: \"\\\"<=\\\"\" },\n        peg$c67 = function() { return { relation: 'leq' } },\n        peg$c68 = \">=\",\n        peg$c69 = { type: \"literal\", value: \">=\", description: \"\\\">=\\\"\" },\n        peg$c70 = function() { return { relation: 'geq' } },\n        peg$c71 = /^[0-9]/,\n        peg$c72 = { type: \"class\", value: \"[0-9]\", description: \"[0-9]\" },\n        peg$c73 = function(digits) { return { priority: parseInt(digits.join(\"\"), 10) } },\n        peg$c74 = function(n) { return { constant: n } },\n        peg$c75 = function(n) { return { constant: -n } },\n        peg$c76 = \"+\",\n        peg$c77 = { type: \"literal\", value: \"+\", description: \"\\\"+\\\"\" },\n        peg$c78 = \"%\",\n        peg$c79 = { type: \"literal\", value: \"%\", description: \"\\\"%\\\"\" },\n        peg$c80 = function(n) { return { view: null, multiplier: n / 100 } },\n        peg$c81 = function(n) { return { view: null, multiplier: n / -100 } },\n        peg$c82 = function(vn, a, m, c) { return { view: vn.view, attribute: a ? a : undefined, multiplier: m ? m : 1, constant: c ? c : undefined } },\n        peg$c83 = \".left\",\n        peg$c84 = { type: \"literal\", value: \".left\", description: \"\\\".left\\\"\" },\n        peg$c85 = function() { return 'left'},\n        peg$c86 = \".right\",\n        peg$c87 = { type: \"literal\", value: \".right\", description: \"\\\".right\\\"\" },\n        peg$c88 = function() { return 'right'},\n        peg$c89 = \".top\",\n        peg$c90 = { type: \"literal\", value: \".top\", description: \"\\\".top\\\"\" },\n        peg$c91 = function() { return 'top'},\n        peg$c92 = \".bottom\",\n        peg$c93 = { type: \"literal\", value: \".bottom\", description: \"\\\".bottom\\\"\" },\n        peg$c94 = function() { return 'bottom'},\n        peg$c95 = \".width\",\n        peg$c96 = { type: \"literal\", value: \".width\", description: \"\\\".width\\\"\" },\n        peg$c97 = function() { return 'width'},\n        peg$c98 = \".height\",\n        peg$c99 = { type: \"literal\", value: \".height\", description: \"\\\".height\\\"\" },\n        peg$c100 = function() { return 'height'},\n        peg$c101 = \".centerX\",\n        peg$c102 = { type: \"literal\", value: \".centerX\", description: \"\\\".centerX\\\"\" },\n        peg$c103 = function() { return 'centerX'},\n        peg$c104 = \".centerY\",\n        peg$c105 = { type: \"literal\", value: \".centerY\", description: \"\\\".centerY\\\"\" },\n        peg$c106 = function() { return 'centerY'},\n        peg$c107 = \"/\",\n        peg$c108 = { type: \"literal\", value: \"/\", description: \"\\\"/\\\"\" },\n        peg$c109 = function(n) { return 1 / n; },\n        peg$c110 = \"/+\",\n        peg$c111 = { type: \"literal\", value: \"/+\", description: \"\\\"/+\\\"\" },\n        peg$c112 = \"/-\",\n        peg$c113 = { type: \"literal\", value: \"/-\", description: \"\\\"/-\\\"\" },\n        peg$c114 = function(n) { return -1 / n; },\n        peg$c115 = \"*\",\n        peg$c116 = { type: \"literal\", value: \"*\", description: \"\\\"*\\\"\" },\n        peg$c117 = function(n) { return n; },\n        peg$c118 = \"*+\",\n        peg$c119 = { type: \"literal\", value: \"*+\", description: \"\\\"*+\\\"\" },\n        peg$c120 = \"*-\",\n        peg$c121 = { type: \"literal\", value: \"*-\", description: \"\\\"*-\\\"\" },\n        peg$c122 = function(n) { return -n; },\n        peg$c123 = /^[a-zA-Z_]/,\n        peg$c124 = { type: \"class\", value: \"[a-zA-Z_]\", description: \"[a-zA-Z_]\" },\n        peg$c125 = /^[a-zA-Z0-9_]/,\n        peg$c126 = { type: \"class\", value: \"[a-zA-Z0-9_]\", description: \"[a-zA-Z0-9_]\" },\n        peg$c127 = function(f, v, r) { return { view: f + v, range: r, $parserOffset: offset() } },\n        peg$c128 = function(f, v) { return { view: f + v, $parserOffset: offset() } },\n        peg$c129 = \"..\",\n        peg$c130 = { type: \"literal\", value: \"..\", description: \"\\\"..\\\"\" },\n        peg$c131 = function(d) { return parseInt(d) },\n        peg$c132 = \".\",\n        peg$c133 = { type: \"literal\", value: \".\", description: \"\\\".\\\"\" },\n        peg$c134 = function(digits, decimals) { return parseFloat(digits.concat(\".\").concat(decimals).join(\"\"), 10); },\n        peg$c135 = function(digits) { return parseInt(digits.join(\"\"), 10); },\n\n        peg$currPos          = 0,\n        peg$reportedPos      = 0,\n        peg$cachedPos        = 0,\n        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },\n        peg$maxFailPos       = 0,\n        peg$maxFailExpected  = [],\n        peg$silentFails      = 0,\n\n        peg$result;\n\n    if (\"startRule\" in options) {\n      if (!(options.startRule in peg$startRuleFunctions)) {\n        throw new Error(\"Can't start parsing from rule \\\"\" + options.startRule + \"\\\".\");\n      }\n\n      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];\n    }\n\n    function text() {\n      return input.substring(peg$reportedPos, peg$currPos);\n    }\n\n    function offset() {\n      return peg$reportedPos;\n    }\n\n    function line() {\n      return peg$computePosDetails(peg$reportedPos).line;\n    }\n\n    function column() {\n      return peg$computePosDetails(peg$reportedPos).column;\n    }\n\n    function expected(description) {\n      throw peg$buildException(\n        null,\n        [{ type: \"other\", description: description }],\n        peg$reportedPos\n      );\n    }\n\n    function error(message) {\n      throw peg$buildException(message, null, peg$reportedPos);\n    }\n\n    function peg$computePosDetails(pos) {\n      function advance(details, startPos, endPos) {\n        var p, ch;\n\n        for (p = startPos; p < endPos; p++) {\n          ch = input.charAt(p);\n          if (ch === \"\\n\") {\n            if (!details.seenCR) { details.line++; }\n            details.column = 1;\n            details.seenCR = false;\n          } else if (ch === \"\\r\" || ch === \"\\u2028\" || ch === \"\\u2029\") {\n            details.line++;\n            details.column = 1;\n            details.seenCR = true;\n          } else {\n            details.column++;\n            details.seenCR = false;\n          }\n        }\n      }\n\n      if (peg$cachedPos !== pos) {\n        if (peg$cachedPos > pos) {\n          peg$cachedPos = 0;\n          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };\n        }\n        advance(peg$cachedPosDetails, peg$cachedPos, pos);\n        peg$cachedPos = pos;\n      }\n\n      return peg$cachedPosDetails;\n    }\n\n    function peg$fail(expected) {\n      if (peg$currPos < peg$maxFailPos) { return; }\n\n      if (peg$currPos > peg$maxFailPos) {\n        peg$maxFailPos = peg$currPos;\n        peg$maxFailExpected = [];\n      }\n\n      peg$maxFailExpected.push(expected);\n    }\n\n    function peg$buildException(message, expected, pos) {\n      function cleanupExpected(expected) {\n        var i = 1;\n\n        expected.sort(function(a, b) {\n          if (a.description < b.description) {\n            return -1;\n          } else if (a.description > b.description) {\n            return 1;\n          } else {\n            return 0;\n          }\n        });\n\n        while (i < expected.length) {\n          if (expected[i - 1] === expected[i]) {\n            expected.splice(i, 1);\n          } else {\n            i++;\n          }\n        }\n      }\n\n      function buildMessage(expected, found) {\n        function stringEscape(s) {\n          function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }\n\n          return s\n            .replace(/\\\\/g,   '\\\\\\\\')\n            .replace(/\"/g,    '\\\\\"')\n            .replace(/\\x08/g, '\\\\b')\n            .replace(/\\t/g,   '\\\\t')\n            .replace(/\\n/g,   '\\\\n')\n            .replace(/\\f/g,   '\\\\f')\n            .replace(/\\r/g,   '\\\\r')\n            .replace(/[\\x00-\\x07\\x0B\\x0E\\x0F]/g, function(ch) { return '\\\\x0' + hex(ch); })\n            .replace(/[\\x10-\\x1F\\x80-\\xFF]/g,    function(ch) { return '\\\\x'  + hex(ch); })\n            .replace(/[\\u0180-\\u0FFF]/g,         function(ch) { return '\\\\u0' + hex(ch); })\n            .replace(/[\\u1080-\\uFFFF]/g,         function(ch) { return '\\\\u'  + hex(ch); });\n        }\n\n        var expectedDescs = new Array(expected.length),\n            expectedDesc, foundDesc, i;\n\n        for (i = 0; i < expected.length; i++) {\n          expectedDescs[i] = expected[i].description;\n        }\n\n        expectedDesc = expected.length > 1\n          ? expectedDescs.slice(0, -1).join(\", \")\n              + \" or \"\n              + expectedDescs[expected.length - 1]\n          : expectedDescs[0];\n\n        foundDesc = found ? \"\\\"\" + stringEscape(found) + \"\\\"\" : \"end of input\";\n\n        return \"Expected \" + expectedDesc + \" but \" + foundDesc + \" found.\";\n      }\n\n      var posDetails = peg$computePosDetails(pos),\n          found      = pos < input.length ? input.charAt(pos) : null;\n\n      if (expected !== null) {\n        cleanupExpected(expected);\n      }\n\n      return new SyntaxError(\n        message !== null ? message : buildMessage(expected, found),\n        expected,\n        found,\n        pos,\n        posDetails.line,\n        posDetails.column\n      );\n    }\n\n    function peg$parsevisualFormatStringExt() {\n      var s0;\n\n      s0 = peg$parsevisualFormatString();\n      if (s0 === peg$FAILED) {\n        s0 = peg$parsevisualFormatStringConstraintExpression();\n      }\n\n      return s0;\n    }\n\n    function peg$parsevisualFormatStringConstraintExpression() {\n      var s0, s1, s2, s3, s4, s5;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c1) {\n        s1 = peg$c1;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c2); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseviewName();\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parseattributePredicate();\n          if (s3 !== peg$FAILED) {\n            s4 = [];\n            s5 = peg$parseattributePredicate();\n            while (s5 !== peg$FAILED) {\n              s4.push(s5);\n              s5 = peg$parseattributePredicate();\n            }\n            if (s4 !== peg$FAILED) {\n              s5 = peg$parsecomments();\n              if (s5 === peg$FAILED) {\n                s5 = peg$c4;\n              }\n              if (s5 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c5(s2, s3, s4, s5);\n                s0 = s1;\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseattributePredicate() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      s1 = peg$parseattribute();\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsepredicateListWithParens();\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c6(s1, s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsevisualFormatString() {\n      var s0, s1, s2, s3, s4, s5, s6, s7;\n\n      s0 = peg$currPos;\n      s1 = peg$currPos;\n      s2 = peg$parseorientation();\n      if (s2 !== peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 58) {\n          s3 = peg$c7;\n          peg$currPos++;\n        } else {\n          s3 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c8); }\n        }\n        if (s3 !== peg$FAILED) {\n          s2 = [s2, s3];\n          s1 = s2;\n        } else {\n          peg$currPos = s1;\n          s1 = peg$c0;\n        }\n      } else {\n        peg$currPos = s1;\n        s1 = peg$c0;\n      }\n      if (s1 === peg$FAILED) {\n        s1 = peg$c4;\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$currPos;\n        s3 = peg$parsesuperview();\n        if (s3 !== peg$FAILED) {\n          s4 = peg$parseconnection();\n          if (s4 !== peg$FAILED) {\n            s3 = [s3, s4];\n            s2 = s3;\n          } else {\n            peg$currPos = s2;\n            s2 = peg$c0;\n          }\n        } else {\n          peg$currPos = s2;\n          s2 = peg$c0;\n        }\n        if (s2 === peg$FAILED) {\n          s2 = peg$c4;\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parseviewGroup();\n          if (s3 !== peg$FAILED) {\n            s4 = [];\n            s5 = peg$currPos;\n            s6 = peg$parseconnection();\n            if (s6 !== peg$FAILED) {\n              s7 = peg$parseviewGroup();\n              if (s7 !== peg$FAILED) {\n                s6 = [s6, s7];\n                s5 = s6;\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n            } else {\n              peg$currPos = s5;\n              s5 = peg$c0;\n            }\n            while (s5 !== peg$FAILED) {\n              s4.push(s5);\n              s5 = peg$currPos;\n              s6 = peg$parseconnection();\n              if (s6 !== peg$FAILED) {\n                s7 = peg$parseviewGroup();\n                if (s7 !== peg$FAILED) {\n                  s6 = [s6, s7];\n                  s5 = s6;\n                } else {\n                  peg$currPos = s5;\n                  s5 = peg$c0;\n                }\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n            }\n            if (s4 !== peg$FAILED) {\n              s5 = peg$currPos;\n              s6 = peg$parseconnection();\n              if (s6 !== peg$FAILED) {\n                s7 = peg$parsesuperview();\n                if (s7 !== peg$FAILED) {\n                  s6 = [s6, s7];\n                  s5 = s6;\n                } else {\n                  peg$currPos = s5;\n                  s5 = peg$c0;\n                }\n              } else {\n                peg$currPos = s5;\n                s5 = peg$c0;\n              }\n              if (s5 === peg$FAILED) {\n                s5 = peg$c4;\n              }\n              if (s5 !== peg$FAILED) {\n                s6 = peg$parsecomments();\n                if (s6 === peg$FAILED) {\n                  s6 = peg$c4;\n                }\n                if (s6 !== peg$FAILED) {\n                  peg$reportedPos = s0;\n                  s1 = peg$c9(s1, s2, s3, s4, s5, s6);\n                  s0 = s1;\n                } else {\n                  peg$currPos = s0;\n                  s0 = peg$c0;\n                }\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseorientation() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c10) {\n        s1 = peg$c10;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c11); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c12();\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 72) {\n          s1 = peg$c13;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c14); }\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c15();\n        }\n        s0 = s1;\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 86) {\n            s1 = peg$c16;\n            peg$currPos++;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c17); }\n          }\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c18();\n          }\n          s0 = s1;\n          if (s0 === peg$FAILED) {\n            s0 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 90) {\n              s1 = peg$c19;\n              peg$currPos++;\n            } else {\n              s1 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c20); }\n            }\n            if (s1 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c21();\n            }\n            s0 = s1;\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsecomments() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = [];\n      if (input.charCodeAt(peg$currPos) === 32) {\n        s2 = peg$c22;\n        peg$currPos++;\n      } else {\n        s2 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c23); }\n      }\n      while (s2 !== peg$FAILED) {\n        s1.push(s2);\n        if (input.charCodeAt(peg$currPos) === 32) {\n          s2 = peg$c22;\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c23); }\n        }\n      }\n      if (s1 !== peg$FAILED) {\n        if (input.substr(peg$currPos, 2) === peg$c24) {\n          s2 = peg$c24;\n          peg$currPos += 2;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c25); }\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          if (input.length > peg$currPos) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c26); }\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            if (input.length > peg$currPos) {\n              s4 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c26); }\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            s1 = [s1, s2, s3];\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsesuperview() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 124) {\n        s1 = peg$c27;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c28); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c29();\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parseviewGroup() {\n      var s0, s1, s2, s3, s4, s5, s6;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 91) {\n        s1 = peg$c30;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c31); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseview();\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          s4 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 44) {\n            s5 = peg$c32;\n            peg$currPos++;\n          } else {\n            s5 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c33); }\n          }\n          if (s5 !== peg$FAILED) {\n            s6 = peg$parseview();\n            if (s6 !== peg$FAILED) {\n              s5 = [s5, s6];\n              s4 = s5;\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          } else {\n            peg$currPos = s4;\n            s4 = peg$c0;\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            s4 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 44) {\n              s5 = peg$c32;\n              peg$currPos++;\n            } else {\n              s5 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c33); }\n            }\n            if (s5 !== peg$FAILED) {\n              s6 = peg$parseview();\n              if (s6 !== peg$FAILED) {\n                s5 = [s5, s6];\n                s4 = s5;\n              } else {\n                peg$currPos = s4;\n                s4 = peg$c0;\n              }\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 93) {\n              s4 = peg$c34;\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c35); }\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c36(s2, s3);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseview() {\n      var s0, s1, s2, s3;\n\n      s0 = peg$currPos;\n      s1 = peg$parseviewNameRange();\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsepredicateListWithParens();\n        if (s2 === peg$FAILED) {\n          s2 = peg$c4;\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parsecascadedViews();\n          if (s3 === peg$FAILED) {\n            s3 = peg$c4;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c37(s1, s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsecascadedViews() {\n      var s0, s1, s2, s3, s4, s5;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 58) {\n        s1 = peg$c7;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c8); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = [];\n        s3 = peg$currPos;\n        s4 = peg$parseconnection();\n        if (s4 !== peg$FAILED) {\n          s5 = peg$parseviewGroup();\n          if (s5 !== peg$FAILED) {\n            s4 = [s4, s5];\n            s3 = s4;\n          } else {\n            peg$currPos = s3;\n            s3 = peg$c0;\n          }\n        } else {\n          peg$currPos = s3;\n          s3 = peg$c0;\n        }\n        if (s3 !== peg$FAILED) {\n          while (s3 !== peg$FAILED) {\n            s2.push(s3);\n            s3 = peg$currPos;\n            s4 = peg$parseconnection();\n            if (s4 !== peg$FAILED) {\n              s5 = peg$parseviewGroup();\n              if (s5 !== peg$FAILED) {\n                s4 = [s4, s5];\n                s3 = s4;\n              } else {\n                peg$currPos = s3;\n                s3 = peg$c0;\n              }\n            } else {\n              peg$currPos = s3;\n              s3 = peg$c0;\n            }\n          }\n        } else {\n          s2 = peg$c0;\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parseconnection();\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c38(s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseconnection() {\n      var s0, s1, s2, s3;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c39) {\n        s1 = peg$c39;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c40); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c41();\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 45) {\n          s1 = peg$c42;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c43); }\n        }\n        if (s1 !== peg$FAILED) {\n          s2 = peg$parsepredicateList();\n          if (s2 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 45) {\n              s3 = peg$c42;\n              peg$currPos++;\n            } else {\n              s3 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c43); }\n            }\n            if (s3 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c44(s2);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 45) {\n            s1 = peg$c42;\n            peg$currPos++;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c43); }\n          }\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c45();\n          }\n          s0 = s1;\n          if (s0 === peg$FAILED) {\n            s0 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 126) {\n              s1 = peg$c46;\n              peg$currPos++;\n            } else {\n              s1 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c47); }\n            }\n            if (s1 !== peg$FAILED) {\n              s2 = peg$parseequalSpacingPredicateList();\n              if (s2 !== peg$FAILED) {\n                if (input.charCodeAt(peg$currPos) === 126) {\n                  s3 = peg$c46;\n                  peg$currPos++;\n                } else {\n                  s3 = peg$FAILED;\n                  if (peg$silentFails === 0) { peg$fail(peg$c47); }\n                }\n                if (s3 !== peg$FAILED) {\n                  peg$reportedPos = s0;\n                  s1 = peg$c44(s2);\n                  s0 = s1;\n                } else {\n                  peg$currPos = s0;\n                  s0 = peg$c0;\n                }\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n            if (s0 === peg$FAILED) {\n              s0 = peg$currPos;\n              if (input.charCodeAt(peg$currPos) === 126) {\n                s1 = peg$c46;\n                peg$currPos++;\n              } else {\n                s1 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c47); }\n              }\n              if (s1 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c48();\n              }\n              s0 = s1;\n              if (s0 === peg$FAILED) {\n                s0 = peg$currPos;\n                s1 = peg$c49;\n                if (s1 !== peg$FAILED) {\n                  peg$reportedPos = s0;\n                  s1 = peg$c50();\n                }\n                s0 = s1;\n              }\n            }\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsepredicateList() {\n      var s0;\n\n      s0 = peg$parsesimplePredicate();\n      if (s0 === peg$FAILED) {\n        s0 = peg$parsepredicateListWithParens();\n      }\n\n      return s0;\n    }\n\n    function peg$parsesimplePredicate() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      s1 = peg$parsepercentage();\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c51(s1);\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        s1 = peg$parsenumber();\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c52(s1);\n        }\n        s0 = s1;\n      }\n\n      return s0;\n    }\n\n    function peg$parsepredicateListWithParens() {\n      var s0, s1, s2, s3, s4, s5, s6;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 40) {\n        s1 = peg$c53;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c54); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsepredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          s4 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 44) {\n            s5 = peg$c32;\n            peg$currPos++;\n          } else {\n            s5 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c33); }\n          }\n          if (s5 !== peg$FAILED) {\n            s6 = peg$parsepredicate();\n            if (s6 !== peg$FAILED) {\n              s5 = [s5, s6];\n              s4 = s5;\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          } else {\n            peg$currPos = s4;\n            s4 = peg$c0;\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            s4 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 44) {\n              s5 = peg$c32;\n              peg$currPos++;\n            } else {\n              s5 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c33); }\n            }\n            if (s5 !== peg$FAILED) {\n              s6 = peg$parsepredicate();\n              if (s6 !== peg$FAILED) {\n                s5 = [s5, s6];\n                s4 = s5;\n              } else {\n                peg$currPos = s4;\n                s4 = peg$c0;\n              }\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 41) {\n              s4 = peg$c55;\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c56); }\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c57(s2, s3);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsepredicate() {\n      var s0, s1, s2, s3, s4, s5;\n\n      s0 = peg$currPos;\n      s1 = peg$parserelation();\n      if (s1 === peg$FAILED) {\n        s1 = peg$c4;\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseobjectOfPredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 64) {\n            s4 = peg$c58;\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c59); }\n          }\n          if (s4 !== peg$FAILED) {\n            s5 = peg$parsepriority();\n            if (s5 !== peg$FAILED) {\n              s4 = [s4, s5];\n              s3 = s4;\n            } else {\n              peg$currPos = s3;\n              s3 = peg$c0;\n            }\n          } else {\n            peg$currPos = s3;\n            s3 = peg$c0;\n          }\n          if (s3 === peg$FAILED) {\n            s3 = peg$c4;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c60(s1, s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseequalSpacingPredicateList() {\n      var s0, s1, s2, s3, s4, s5, s6;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 40) {\n        s1 = peg$c53;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c54); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseequalSpacingPredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          s4 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 44) {\n            s5 = peg$c32;\n            peg$currPos++;\n          } else {\n            s5 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c33); }\n          }\n          if (s5 !== peg$FAILED) {\n            s6 = peg$parseequalSpacingPredicate();\n            if (s6 !== peg$FAILED) {\n              s5 = [s5, s6];\n              s4 = s5;\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          } else {\n            peg$currPos = s4;\n            s4 = peg$c0;\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            s4 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 44) {\n              s5 = peg$c32;\n              peg$currPos++;\n            } else {\n              s5 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c33); }\n            }\n            if (s5 !== peg$FAILED) {\n              s6 = peg$parseequalSpacingPredicate();\n              if (s6 !== peg$FAILED) {\n                s5 = [s5, s6];\n                s4 = s5;\n              } else {\n                peg$currPos = s4;\n                s4 = peg$c0;\n              }\n            } else {\n              peg$currPos = s4;\n              s4 = peg$c0;\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 41) {\n              s4 = peg$c55;\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c56); }\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c57(s2, s3);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseequalSpacingPredicate() {\n      var s0, s1, s2, s3, s4, s5;\n\n      s0 = peg$currPos;\n      s1 = peg$parserelation();\n      if (s1 === peg$FAILED) {\n        s1 = peg$c4;\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseobjectOfPredicate();\n        if (s2 !== peg$FAILED) {\n          s3 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 64) {\n            s4 = peg$c58;\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c59); }\n          }\n          if (s4 !== peg$FAILED) {\n            s5 = peg$parsepriority();\n            if (s5 !== peg$FAILED) {\n              s4 = [s4, s5];\n              s3 = s4;\n            } else {\n              peg$currPos = s3;\n              s3 = peg$c0;\n            }\n          } else {\n            peg$currPos = s3;\n            s3 = peg$c0;\n          }\n          if (s3 === peg$FAILED) {\n            s3 = peg$c4;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c61(s1, s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parserelation() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c62) {\n        s1 = peg$c62;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c63); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c64();\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.substr(peg$currPos, 2) === peg$c65) {\n          s1 = peg$c65;\n          peg$currPos += 2;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c66); }\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c67();\n        }\n        s0 = s1;\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.substr(peg$currPos, 2) === peg$c68) {\n            s1 = peg$c68;\n            peg$currPos += 2;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c69); }\n          }\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c70();\n          }\n          s0 = s1;\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseobjectOfPredicate() {\n      var s0;\n\n      s0 = peg$parsepercentage();\n      if (s0 === peg$FAILED) {\n        s0 = peg$parseconstant();\n        if (s0 === peg$FAILED) {\n          s0 = peg$parseviewPredicate();\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsepriority() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      s1 = [];\n      if (peg$c71.test(input.charAt(peg$currPos))) {\n        s2 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s2 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c72); }\n      }\n      if (s2 !== peg$FAILED) {\n        while (s2 !== peg$FAILED) {\n          s1.push(s2);\n          if (peg$c71.test(input.charAt(peg$currPos))) {\n            s2 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s2 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c72); }\n          }\n        }\n      } else {\n        s1 = peg$c0;\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c73(s1);\n      }\n      s0 = s1;\n\n      return s0;\n    }\n\n    function peg$parseconstant() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      s1 = peg$parsenumber();\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c74(s1);\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 45) {\n          s1 = peg$c42;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c43); }\n        }\n        if (s1 !== peg$FAILED) {\n          s2 = peg$parsenumber();\n          if (s2 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c75(s2);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 43) {\n            s1 = peg$c76;\n            peg$currPos++;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c77); }\n          }\n          if (s1 !== peg$FAILED) {\n            s2 = peg$parsenumber();\n            if (s2 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c74(s2);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsepercentage() {\n      var s0, s1, s2, s3;\n\n      s0 = peg$currPos;\n      s1 = peg$parsenumber();\n      if (s1 !== peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 37) {\n          s2 = peg$c78;\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c79); }\n        }\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c80(s1);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 45) {\n          s1 = peg$c42;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c43); }\n        }\n        if (s1 !== peg$FAILED) {\n          s2 = peg$parsenumber();\n          if (s2 !== peg$FAILED) {\n            if (input.charCodeAt(peg$currPos) === 37) {\n              s3 = peg$c78;\n              peg$currPos++;\n            } else {\n              s3 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c79); }\n            }\n            if (s3 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c81(s2);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.charCodeAt(peg$currPos) === 43) {\n            s1 = peg$c76;\n            peg$currPos++;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c77); }\n          }\n          if (s1 !== peg$FAILED) {\n            s2 = peg$parsenumber();\n            if (s2 !== peg$FAILED) {\n              if (input.charCodeAt(peg$currPos) === 37) {\n                s3 = peg$c78;\n                peg$currPos++;\n              } else {\n                s3 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c79); }\n              }\n              if (s3 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c80(s2);\n                s0 = s1;\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseviewPredicate() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = peg$parseviewName();\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parseattribute();\n        if (s2 === peg$FAILED) {\n          s2 = peg$c4;\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parsemultiplier();\n          if (s3 === peg$FAILED) {\n            s3 = peg$c4;\n          }\n          if (s3 !== peg$FAILED) {\n            s4 = peg$parseconstantExpr();\n            if (s4 === peg$FAILED) {\n              s4 = peg$c4;\n            }\n            if (s4 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c82(s1, s2, s3, s4);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parseattribute() {\n      var s0, s1;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 5) === peg$c83) {\n        s1 = peg$c83;\n        peg$currPos += 5;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c84); }\n      }\n      if (s1 !== peg$FAILED) {\n        peg$reportedPos = s0;\n        s1 = peg$c85();\n      }\n      s0 = s1;\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.substr(peg$currPos, 6) === peg$c86) {\n          s1 = peg$c86;\n          peg$currPos += 6;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c87); }\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c88();\n        }\n        s0 = s1;\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.substr(peg$currPos, 4) === peg$c89) {\n            s1 = peg$c89;\n            peg$currPos += 4;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c90); }\n          }\n          if (s1 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c91();\n          }\n          s0 = s1;\n          if (s0 === peg$FAILED) {\n            s0 = peg$currPos;\n            if (input.substr(peg$currPos, 7) === peg$c92) {\n              s1 = peg$c92;\n              peg$currPos += 7;\n            } else {\n              s1 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c93); }\n            }\n            if (s1 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c94();\n            }\n            s0 = s1;\n            if (s0 === peg$FAILED) {\n              s0 = peg$currPos;\n              if (input.substr(peg$currPos, 6) === peg$c95) {\n                s1 = peg$c95;\n                peg$currPos += 6;\n              } else {\n                s1 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c96); }\n              }\n              if (s1 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c97();\n              }\n              s0 = s1;\n              if (s0 === peg$FAILED) {\n                s0 = peg$currPos;\n                if (input.substr(peg$currPos, 7) === peg$c98) {\n                  s1 = peg$c98;\n                  peg$currPos += 7;\n                } else {\n                  s1 = peg$FAILED;\n                  if (peg$silentFails === 0) { peg$fail(peg$c99); }\n                }\n                if (s1 !== peg$FAILED) {\n                  peg$reportedPos = s0;\n                  s1 = peg$c100();\n                }\n                s0 = s1;\n                if (s0 === peg$FAILED) {\n                  s0 = peg$currPos;\n                  if (input.substr(peg$currPos, 8) === peg$c101) {\n                    s1 = peg$c101;\n                    peg$currPos += 8;\n                  } else {\n                    s1 = peg$FAILED;\n                    if (peg$silentFails === 0) { peg$fail(peg$c102); }\n                  }\n                  if (s1 !== peg$FAILED) {\n                    peg$reportedPos = s0;\n                    s1 = peg$c103();\n                  }\n                  s0 = s1;\n                  if (s0 === peg$FAILED) {\n                    s0 = peg$currPos;\n                    if (input.substr(peg$currPos, 8) === peg$c104) {\n                      s1 = peg$c104;\n                      peg$currPos += 8;\n                    } else {\n                      s1 = peg$FAILED;\n                      if (peg$silentFails === 0) { peg$fail(peg$c105); }\n                    }\n                    if (s1 !== peg$FAILED) {\n                      peg$reportedPos = s0;\n                      s1 = peg$c106();\n                    }\n                    s0 = s1;\n                  }\n                }\n              }\n            }\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parsemultiplier() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 47) {\n        s1 = peg$c107;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c108); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsenumber();\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c109(s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.substr(peg$currPos, 2) === peg$c110) {\n          s1 = peg$c110;\n          peg$currPos += 2;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c111); }\n        }\n        if (s1 !== peg$FAILED) {\n          s2 = peg$parsenumber();\n          if (s2 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c109(s2);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n        if (s0 === peg$FAILED) {\n          s0 = peg$currPos;\n          if (input.substr(peg$currPos, 2) === peg$c112) {\n            s1 = peg$c112;\n            peg$currPos += 2;\n          } else {\n            s1 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c113); }\n          }\n          if (s1 !== peg$FAILED) {\n            s2 = peg$parsenumber();\n            if (s2 !== peg$FAILED) {\n              peg$reportedPos = s0;\n              s1 = peg$c114(s2);\n              s0 = s1;\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n          if (s0 === peg$FAILED) {\n            s0 = peg$currPos;\n            if (input.charCodeAt(peg$currPos) === 42) {\n              s1 = peg$c115;\n              peg$currPos++;\n            } else {\n              s1 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c116); }\n            }\n            if (s1 !== peg$FAILED) {\n              s2 = peg$parsenumber();\n              if (s2 !== peg$FAILED) {\n                peg$reportedPos = s0;\n                s1 = peg$c117(s2);\n                s0 = s1;\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n            } else {\n              peg$currPos = s0;\n              s0 = peg$c0;\n            }\n            if (s0 === peg$FAILED) {\n              s0 = peg$currPos;\n              if (input.substr(peg$currPos, 2) === peg$c118) {\n                s1 = peg$c118;\n                peg$currPos += 2;\n              } else {\n                s1 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c119); }\n              }\n              if (s1 !== peg$FAILED) {\n                s2 = peg$parsenumber();\n                if (s2 !== peg$FAILED) {\n                  peg$reportedPos = s0;\n                  s1 = peg$c117(s2);\n                  s0 = s1;\n                } else {\n                  peg$currPos = s0;\n                  s0 = peg$c0;\n                }\n              } else {\n                peg$currPos = s0;\n                s0 = peg$c0;\n              }\n              if (s0 === peg$FAILED) {\n                s0 = peg$currPos;\n                if (input.substr(peg$currPos, 2) === peg$c120) {\n                  s1 = peg$c120;\n                  peg$currPos += 2;\n                } else {\n                  s1 = peg$FAILED;\n                  if (peg$silentFails === 0) { peg$fail(peg$c121); }\n                }\n                if (s1 !== peg$FAILED) {\n                  s2 = peg$parsenumber();\n                  if (s2 !== peg$FAILED) {\n                    peg$reportedPos = s0;\n                    s1 = peg$c122(s2);\n                    s0 = s1;\n                  } else {\n                    peg$currPos = s0;\n                    s0 = peg$c0;\n                  }\n                } else {\n                  peg$currPos = s0;\n                  s0 = peg$c0;\n                }\n              }\n            }\n          }\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseconstantExpr() {\n      var s0, s1, s2;\n\n      s0 = peg$currPos;\n      if (input.charCodeAt(peg$currPos) === 45) {\n        s1 = peg$c42;\n        peg$currPos++;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c43); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = peg$parsenumber();\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c122(s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        if (input.charCodeAt(peg$currPos) === 43) {\n          s1 = peg$c76;\n          peg$currPos++;\n        } else {\n          s1 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c77); }\n        }\n        if (s1 !== peg$FAILED) {\n          s2 = peg$parsenumber();\n          if (s2 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c117(s2);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseviewNameRange() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = peg$currPos;\n      s2 = [];\n      if (peg$c123.test(input.charAt(peg$currPos))) {\n        s3 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s3 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c124); }\n      }\n      if (s3 !== peg$FAILED) {\n        while (s3 !== peg$FAILED) {\n          s2.push(s3);\n          if (peg$c123.test(input.charAt(peg$currPos))) {\n            s3 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s3 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c124); }\n          }\n        }\n      } else {\n        s2 = peg$c0;\n      }\n      if (s2 !== peg$FAILED) {\n        s2 = input.substring(s1, peg$currPos);\n      }\n      s1 = s2;\n      if (s1 !== peg$FAILED) {\n        s2 = peg$currPos;\n        s3 = [];\n        if (peg$c125.test(input.charAt(peg$currPos))) {\n          s4 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s4 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c126); }\n        }\n        while (s4 !== peg$FAILED) {\n          s3.push(s4);\n          if (peg$c125.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c126); }\n          }\n        }\n        if (s3 !== peg$FAILED) {\n          s3 = input.substring(s2, peg$currPos);\n        }\n        s2 = s3;\n        if (s2 !== peg$FAILED) {\n          s3 = peg$parserange();\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c127(s1, s2, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        s1 = peg$currPos;\n        s2 = [];\n        if (peg$c123.test(input.charAt(peg$currPos))) {\n          s3 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s3 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c124); }\n        }\n        if (s3 !== peg$FAILED) {\n          while (s3 !== peg$FAILED) {\n            s2.push(s3);\n            if (peg$c123.test(input.charAt(peg$currPos))) {\n              s3 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s3 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c124); }\n            }\n          }\n        } else {\n          s2 = peg$c0;\n        }\n        if (s2 !== peg$FAILED) {\n          s2 = input.substring(s1, peg$currPos);\n        }\n        s1 = s2;\n        if (s1 !== peg$FAILED) {\n          s2 = peg$currPos;\n          s3 = [];\n          if (peg$c125.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c126); }\n          }\n          while (s4 !== peg$FAILED) {\n            s3.push(s4);\n            if (peg$c125.test(input.charAt(peg$currPos))) {\n              s4 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s4 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c126); }\n            }\n          }\n          if (s3 !== peg$FAILED) {\n            s3 = input.substring(s2, peg$currPos);\n          }\n          s2 = s3;\n          if (s2 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c128(s1, s2);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      }\n\n      return s0;\n    }\n\n    function peg$parseviewName() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = peg$currPos;\n      s2 = [];\n      if (peg$c123.test(input.charAt(peg$currPos))) {\n        s3 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s3 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c124); }\n      }\n      if (s3 !== peg$FAILED) {\n        while (s3 !== peg$FAILED) {\n          s2.push(s3);\n          if (peg$c123.test(input.charAt(peg$currPos))) {\n            s3 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s3 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c124); }\n          }\n        }\n      } else {\n        s2 = peg$c0;\n      }\n      if (s2 !== peg$FAILED) {\n        s2 = input.substring(s1, peg$currPos);\n      }\n      s1 = s2;\n      if (s1 !== peg$FAILED) {\n        s2 = peg$currPos;\n        s3 = [];\n        if (peg$c125.test(input.charAt(peg$currPos))) {\n          s4 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s4 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c126); }\n        }\n        while (s4 !== peg$FAILED) {\n          s3.push(s4);\n          if (peg$c125.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c126); }\n          }\n        }\n        if (s3 !== peg$FAILED) {\n          s3 = input.substring(s2, peg$currPos);\n        }\n        s2 = s3;\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c128(s1, s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parserange() {\n      var s0, s1, s2, s3;\n\n      s0 = peg$currPos;\n      if (input.substr(peg$currPos, 2) === peg$c129) {\n        s1 = peg$c129;\n        peg$currPos += 2;\n      } else {\n        s1 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c130); }\n      }\n      if (s1 !== peg$FAILED) {\n        s2 = [];\n        if (peg$c71.test(input.charAt(peg$currPos))) {\n          s3 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s3 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c72); }\n        }\n        if (s3 !== peg$FAILED) {\n          while (s3 !== peg$FAILED) {\n            s2.push(s3);\n            if (peg$c71.test(input.charAt(peg$currPos))) {\n              s3 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s3 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c72); }\n            }\n          }\n        } else {\n          s2 = peg$c0;\n        }\n        if (s2 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c131(s2);\n          s0 = s1;\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n\n      return s0;\n    }\n\n    function peg$parsenumber() {\n      var s0, s1, s2, s3, s4;\n\n      s0 = peg$currPos;\n      s1 = [];\n      if (peg$c71.test(input.charAt(peg$currPos))) {\n        s2 = input.charAt(peg$currPos);\n        peg$currPos++;\n      } else {\n        s2 = peg$FAILED;\n        if (peg$silentFails === 0) { peg$fail(peg$c72); }\n      }\n      if (s2 !== peg$FAILED) {\n        while (s2 !== peg$FAILED) {\n          s1.push(s2);\n          if (peg$c71.test(input.charAt(peg$currPos))) {\n            s2 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s2 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c72); }\n          }\n        }\n      } else {\n        s1 = peg$c0;\n      }\n      if (s1 !== peg$FAILED) {\n        if (input.charCodeAt(peg$currPos) === 46) {\n          s2 = peg$c132;\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c133); }\n        }\n        if (s2 !== peg$FAILED) {\n          s3 = [];\n          if (peg$c71.test(input.charAt(peg$currPos))) {\n            s4 = input.charAt(peg$currPos);\n            peg$currPos++;\n          } else {\n            s4 = peg$FAILED;\n            if (peg$silentFails === 0) { peg$fail(peg$c72); }\n          }\n          if (s4 !== peg$FAILED) {\n            while (s4 !== peg$FAILED) {\n              s3.push(s4);\n              if (peg$c71.test(input.charAt(peg$currPos))) {\n                s4 = input.charAt(peg$currPos);\n                peg$currPos++;\n              } else {\n                s4 = peg$FAILED;\n                if (peg$silentFails === 0) { peg$fail(peg$c72); }\n              }\n            }\n          } else {\n            s3 = peg$c0;\n          }\n          if (s3 !== peg$FAILED) {\n            peg$reportedPos = s0;\n            s1 = peg$c134(s1, s3);\n            s0 = s1;\n          } else {\n            peg$currPos = s0;\n            s0 = peg$c0;\n          }\n        } else {\n          peg$currPos = s0;\n          s0 = peg$c0;\n        }\n      } else {\n        peg$currPos = s0;\n        s0 = peg$c0;\n      }\n      if (s0 === peg$FAILED) {\n        s0 = peg$currPos;\n        s1 = [];\n        if (peg$c71.test(input.charAt(peg$currPos))) {\n          s2 = input.charAt(peg$currPos);\n          peg$currPos++;\n        } else {\n          s2 = peg$FAILED;\n          if (peg$silentFails === 0) { peg$fail(peg$c72); }\n        }\n        if (s2 !== peg$FAILED) {\n          while (s2 !== peg$FAILED) {\n            s1.push(s2);\n            if (peg$c71.test(input.charAt(peg$currPos))) {\n              s2 = input.charAt(peg$currPos);\n              peg$currPos++;\n            } else {\n              s2 = peg$FAILED;\n              if (peg$silentFails === 0) { peg$fail(peg$c72); }\n            }\n          }\n        } else {\n          s1 = peg$c0;\n        }\n        if (s1 !== peg$FAILED) {\n          peg$reportedPos = s0;\n          s1 = peg$c135(s1);\n        }\n        s0 = s1;\n      }\n\n      return s0;\n    }\n\n\n      function extend(dst) {\n        for (var i = 1; i < arguments.length; i++) {\n          for (var k in arguments[i]) {\n            dst[k] = arguments[i][k];\n          }\n        }\n        return dst;\n      }\n\n\n    peg$result = peg$startRuleFunction();\n\n    if (peg$result !== peg$FAILED && peg$currPos === input.length) {\n      return peg$result;\n    } else {\n      if (peg$result !== peg$FAILED && peg$currPos < input.length) {\n        peg$fail({ type: \"end\", description: \"end of input\" });\n      }\n\n      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);\n    }\n  }\n\n  return {\n    SyntaxError: SyntaxError,\n    parse:       parse\n  };\n})();\n\nconst Orientation = {\n    HORIZONTAL: 1,\n    VERTICAL: 2,\n    ZINDEX: 4\n};\n\n/**\n * Helper function that inserts equal spacers (~).\n * @private\n */\nfunction _processEqualSpacer(context, stackView) {\n\n    // Determine unique name for the spacer\n    context.equalSpacerIndex = context.equalSpacerIndex || 1;\n    const name = '_~' + context.lineIndex + ':' + context.equalSpacerIndex + '~';\n    if (context.equalSpacerIndex > 1) {\n\n        // Ensure that all spacers have the same width/height\n        context.constraints.push({\n            view1: '_~' + context.lineIndex + ':1~',\n            attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n            relation: context.relation.relation || Relation.EQU,\n            view2: name,\n            attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n            priority: context.relation.priority\n        });\n    }\n    context.equalSpacerIndex++;\n\n    // Enforce view/proportional width/height\n    if (context.relation.view || (context.relation.multiplier && (context.relation.multiplier !== 1))) {\n        context.constraints.push({\n            view1: name,\n            attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n            relation: context.relation.relation || Relation.EQU,\n            view2: context.relation.view,\n            attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n            priority: context.relation.priority,\n            multiplier: context.relation.multiplier\n        });\n        context.relation.multiplier = undefined;\n    }\n    else if (context.relation.constant) {\n        context.constraints.push({\n            view1: name,\n            attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n            relation: Relation.EQU,\n            view2: null,\n            attr2: Attribute.CONST,\n            priority: context.relation.priority,\n            constant: context.relation.constant\n        });\n        context.relation.constant = undefined;\n    }\n\n    // Add constraint\n    for (var i = 0; i < context.prevViews.length; i++) {\n        const prevView = context.prevViews[i];\n        switch (context.orientation) {\n            case Orientation.HORIZONTAL:\n                context.prevAttr = (prevView !== stackView) ? Attribute.RIGHT : Attribute.LEFT;\n                context.curAttr = Attribute.LEFT;\n                break;\n            case Orientation.VERTICAL:\n                context.prevAttr = (prevView !== stackView) ? Attribute.BOTTOM : Attribute.TOP;\n                context.curAttr = Attribute.TOP;\n                break;\n            case Orientation.ZINDEX:\n                context.prevAttr = Attribute.ZINDEX;\n                context.curAttr = Attribute.ZINDEX;\n                context.relation.constant = (prevView !== stackView) ? 'default' : 0;\n                break;\n        }\n        context.constraints.push({\n            view1: prevView,\n            attr1: context.prevAttr,\n            relation: context.relation.relation,\n            view2: name,\n            attr2: context.curAttr,\n            priority: context.relation.priority\n        });\n    }\n    context.prevViews = [name];\n}\n\n/**\n * Helper function that inserts proportional spacers (-12%-).\n * @private\n */\nfunction _processProportionalSpacer(context, stackView) {\n    context.proportionalSpacerIndex = context.proportionalSpacerIndex || 1;\n    const name = '_-' + context.lineIndex + ':' + context.proportionalSpacerIndex + '-';\n    context.proportionalSpacerIndex++;\n    context.constraints.push({\n        view1: name,\n        attr1: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n        relation: context.relation.relation || Relation.EQU,\n        view2: context.relation.view, // or relative to the stackView... food for thought\n        attr2: context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT,\n        priority: context.relation.priority,\n        multiplier: context.relation.multiplier\n    });\n    context.relation.multiplier = undefined;\n\n    // Add constraint\n    for (var i = 0; i < context.prevViews.length; i++) {\n        const prevView = context.prevViews[i];\n        switch (context.orientation) {\n            case Orientation.HORIZONTAL:\n                context.prevAttr = (prevView !== stackView) ? Attribute.RIGHT : Attribute.LEFT;\n                context.curAttr = Attribute.LEFT;\n                break;\n            case Orientation.VERTICAL:\n                context.prevAttr = (prevView !== stackView) ? Attribute.BOTTOM : Attribute.TOP;\n                context.curAttr = Attribute.TOP;\n                break;\n            case Orientation.ZINDEX:\n                context.prevAttr = Attribute.ZINDEX;\n                context.curAttr = Attribute.ZINDEX;\n                context.relation.constant = (prevView !== stackView) ? 'default' : 0;\n                break;\n        }\n        context.constraints.push({\n            view1: prevView,\n            attr1: context.prevAttr,\n            relation: context.relation.relation,\n            view2: name,\n            attr2: context.curAttr,\n            priority: context.relation.priority\n        });\n    }\n    context.prevViews = [name];\n}\n\n/**\n * In case of a stack-view, set constraints for opposite orientations\n * @private\n */\nfunction _processStackView(context, name, subView) {\n    let viewName;\n    for (var orientation = 1; orientation <= 4; orientation *= 2) {\n        if ((subView.orientations & orientation) &&\n            (subView.stack.orientation !== orientation) &&\n            !(subView.stack.processedOrientations & orientation)) {\n            subView.stack.processedOrientations = subView.stack.processedOrientations | orientation;\n            viewName = viewName || {\n                name: name,\n                type: 'stack'\n            };\n            for (var i = 0, j = subView.stack.subViews.length; i < j; i++) {\n                if (orientation === Orientation.ZINDEX) {\n                    context.constraints.push({\n                        view1: viewName,\n                        attr1: Attribute.ZINDEX,\n                        relation: Relation.EQU,\n                        view2: subView.stack.subViews[i],\n                        attr2: Attribute.ZINDEX\n                    });\n                }\n                else {\n                    context.constraints.push({\n                        view1: viewName,\n                        attr1: (orientation === Orientation.VERTICAL) ? Attribute.HEIGHT : Attribute.WIDTH,\n                        relation: Relation.EQU,\n                        view2: subView.stack.subViews[i],\n                        attr2: (orientation === Orientation.VERTICAL) ? Attribute.HEIGHT : Attribute.WIDTH\n                    });\n                    context.constraints.push({\n                        view1: viewName,\n                        attr1: (orientation === Orientation.VERTICAL) ? Attribute.TOP : Attribute.LEFT,\n                        relation: Relation.EQU,\n                        view2: subView.stack.subViews[i],\n                        attr2: (orientation === Orientation.VERTICAL) ? Attribute.TOP : Attribute.LEFT\n                    });\n                }\n            }\n        }\n    }\n}\n\n/**\n * Recursive helper function converts a view-name and a range to a series\n * of view-names (e.g. [child1, child2, child3, ...]).\n * @private\n */\nfunction _getRange(name, range) {\n    if (range === true) {\n        range = name.match(/\\.\\.\\d+$/);\n        if (range) {\n            name = name.substring(0, name.length - range[0].length);\n            range = parseInt(range[0].substring(2));\n        }\n    }\n    if (!range) {\n        return [name];\n    }\n    var start = name.match(/\\d+$/);\n    var res = [];\n    var i;\n    if (start) {\n        name = name.substring(0, name.length - start[0].length);\n        for (i = parseInt(start); i <= range; i++) {\n            res.push(name + i);\n        }\n    }\n    else {\n        res.push(name);\n        for (i = 2; i <= range; i++) {\n            res.push(name + i);\n        }\n    }\n    return res;\n}\n\n/**\n * Recursive helper function that processes the cascaded data.\n * @private\n */\nfunction _processCascade(context, cascade, parentItem) {\n    const stackView = parentItem ? parentItem.view : null;\n    const subViews = [];\n    let curViews = [];\n    let subView;\n    if (stackView) {\n        cascade.push({view: stackView});\n        curViews.push(stackView);\n    }\n    for (var i = 0; i < cascade.length; i++) {\n        let item = cascade[i];\n        if ((!Array.isArray(item) && item.hasOwnProperty('view')) ||\n            (Array.isArray(item) && item[0].view && !item[0].relation)) {\n            const items = Array.isArray(item) ? item : [item];\n            for (var z = 0; z < items.length; z++) {\n                item = items[z];\n                const viewRange = (item === ',') ? [] : item.view ? _getRange(item.view, item.range) : [null];\n                for (var r = 0; r < viewRange.length; r++) {\n                    const curView = viewRange[r];\n                    curViews.push(curView);\n\n                    //\n                    // Add this view to the collection of subViews\n                    //\n                    if (curView !== stackView) {\n                        subViews.push(curView);\n                        subView = context.subViews[curView];\n                        if (!subView) {\n                            subView = {orientations: 0};\n                            context.subViews[curView] = subView;\n                        }\n                        subView.orientations = subView.orientations | context.orientation;\n                        if (subView.stack) {\n                            _processStackView(context, curView, subView);\n                        }\n                    }\n\n                    //\n                    // Process the relationship between this and the previous views\n                    //\n                    if ((context.prevViews !== undefined) && (curView !== undefined) && context.relation) {\n                        if (context.relation.relation !== 'none') {\n                            for (var p = 0; p < context.prevViews.length; p++) {\n                                const prevView = context.prevViews[p];\n                                switch (context.orientation) {\n                                    case Orientation.HORIZONTAL:\n                                        context.prevAttr = (prevView !== stackView) ? Attribute.RIGHT : Attribute.LEFT;\n                                        context.curAttr = (curView !== stackView) ? Attribute.LEFT : Attribute.RIGHT;\n                                        break;\n                                    case Orientation.VERTICAL:\n                                        context.prevAttr = (prevView !== stackView) ? Attribute.BOTTOM : Attribute.TOP;\n                                        context.curAttr = (curView !== stackView) ? Attribute.TOP : Attribute.BOTTOM;\n                                        break;\n                                    case Orientation.ZINDEX:\n                                        context.prevAttr = Attribute.ZINDEX;\n                                        context.curAttr = Attribute.ZINDEX;\n                                        context.relation.constant = !prevView ? 0 : (context.relation.constant || 'default');\n                                        break;\n                                }\n                                context.constraints.push({\n                                    view1: prevView,\n                                    attr1: context.prevAttr,\n                                    relation: context.relation.relation,\n                                    view2: curView,\n                                    attr2: context.curAttr,\n                                    multiplier: context.relation.multiplier,\n                                    constant: ((context.relation.constant === 'default') || !context.relation.constant) ? context.relation.constant : -context.relation.constant,\n                                    priority: context.relation.priority\n                                });\n                            }\n                        }\n                    }\n\n                    //\n                    // Process view size constraints\n                    //\n                    const constraints = item.constraints;\n                    if (constraints) {\n                        for (var n = 0; n < constraints.length; n++) {\n                            context.prevAttr = context.horizontal ? Attribute.WIDTH : Attribute.HEIGHT;\n                            context.curAttr = (constraints[n].view || constraints[n].multiplier) ?\n                                    (constraints[n].attribute || context.prevAttr) :\n                                    (constraints[n].variable ? Attribute.VARIABLE : Attribute.CONST);\n                            context.constraints.push({\n                                view1: curView,\n                                attr1: context.prevAttr,\n                                relation: constraints[n].relation,\n                                view2: constraints[n].view,\n                                attr2: context.curAttr,\n                                multiplier: constraints[n].multiplier,\n                                constant: constraints[n].constant,\n                                priority: constraints[n].priority\n                            });\n                        }\n                    }\n\n                    //\n                    // Process cascaded data (child stack-views)\n                    //\n                    if (item.cascade) {\n                        _processCascade(context, item.cascade, item);\n                    }\n                }\n            }\n        }\n        else if (item !== ',') {\n            context.prevViews = curViews;\n            curViews = [];\n            context.relation = item[0];\n            if (context.prevViews !== undefined) {\n                if (context.relation.equalSpacing) {\n                    _processEqualSpacer(context, stackView);\n                }\n                if (context.relation.multiplier) {\n                    _processProportionalSpacer(context, stackView);\n                }\n            }\n        }\n    }\n\n    if (stackView) {\n        subView = context.subViews[stackView];\n        if (!subView) {\n            subView = {orientations: context.orientation};\n            context.subViews[stackView] = subView;\n        }\n        else if (subView.stack) {\n            const err = new Error('A stack named \"' + stackView + '\" has already been created');\n            err.column = parentItem.$parserOffset + 1;\n            throw err;\n        }\n        subView.stack = {\n            orientation: context.orientation,\n            processedOrientations: context.orientation,\n            subViews: subViews\n        };\n        _processStackView(context, stackView, subView);\n    }\n}\n\nconst metaInfoCategories = [\n    'viewport',\n    'spacing',\n    'colors',\n    'shapes',\n    'widths',\n    'heights'\n];\n\n/**\n * VisualFormat\n *\n * @namespace VisualFormat\n */\nclass VisualFormat {\n\n    /**\n     * Parses a single line of vfl into an array of constraint definitions.\n     *\n     * When the visual-format could not be succesfully parsed an exception is thrown containing\n     * additional info about the parse error and column position.\n     *\n     * @param {String} visualFormat Visual format string (cannot contain line-endings!).\n     * @param {Object} [options] Configuration options.\n     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).\n     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).\n     * @param {Number} [options.lineIndex] Line-index used when auto generating equal-spacing constraints.\n     * @return {Array} Array of constraint definitions.\n     */\n    static parseLine(visualFormat, options) {\n        if ((visualFormat.length === 0) ||\n            (options && options.extended && (visualFormat.indexOf('//') === 0))) {\n            return [];\n        }\n        const res = (options && options.extended) ? parserExt.parse(visualFormat) : parser.parse(visualFormat);\n        if (options && options.outFormat === 'raw') {\n            return [res];\n        }\n        let context = {\n            constraints: [],\n            lineIndex: (options ? options.lineIndex : undefined) || 1,\n            subViews: (options ? options.subViews : undefined) || {}\n        };\n        if (res.type === 'attribute') {\n            for (let n = 0; n < res.attributes.length; n++) {\n                const attr = res.attributes[n];\n                for (let m = 0; m < attr.predicates.length; m++) {\n                    const predicate = attr.predicates[m];\n                    context.constraints.push({\n                      view1: res.view,\n                      attr1: attr.attr,\n                      relation: predicate.relation,\n                      view2: predicate.view,\n                      attr2: predicate.attribute || attr.attr,\n                      multiplier: predicate.multiplier,\n                      constant: predicate.constant,\n                      priority: predicate.priority\n                    });\n                }\n            }\n        } else {\n          switch (res.orientation) {\n            case 'horizontal':\n              context.orientation = Orientation.HORIZONTAL;\n              context.horizontal = true;\n              _processCascade(context, res.cascade, null);\n              break;\n            case 'vertical':\n              context.orientation = Orientation.VERTICAL;\n              _processCascade(context, res.cascade, null);\n              break;\n            case 'horzvert':\n              context.orientation = Orientation.HORIZONTAL;\n              context.horizontal = true;\n              _processCascade(context, res.cascade, null);\n              context = {\n                constraints: context.constraints,\n                lineIndex: context.lineIndex,\n                subViews: context.subViews,\n                orientation: Orientation.VERTICAL\n              };\n              _processCascade(context, res.cascade, null);\n              break;\n            case 'zIndex':\n              context.orientation = Orientation.ZINDEX;\n              _processCascade(context, res.cascade, null);\n              break;\n          }\n        }\n        return context.constraints;\n    }\n\n    /**\n     * Parses one or more visual format strings into an array of constraint definitions.\n     *\n     * When the visual-format could not be succesfully parsed an exception is thrown containing\n     * additional info about the parse error and column position.\n     *\n     * @param {String|Array} visualFormat One or more visual format strings.\n     * @param {Object} [options] Configuration options.\n     * @param {Boolean} [options.extended] When set to true uses the extended syntax (default: false).\n     * @param {Boolean} [options.strict] When set to false trims any leading/trailing spaces and ignores empty lines (default: true).\n     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\\n`).\n     * @param {String} [options.outFormat] Output format (`constraints` or `raw`) (default: `constraints`).\n     * @return {Array} Array of constraint definitions.\n     */\n    static parse(visualFormat, options) {\n        const lineSeparator = (options && options.lineSeparator) ? options.lineSeparator : '\\n';\n        if (!Array.isArray(visualFormat) && (visualFormat.indexOf(lineSeparator) < 0)) {\n            try {\n                return this.parseLine(visualFormat, options);\n            }\n            catch (err) {\n                err.source = visualFormat;\n                throw err;\n            }\n        }\n\n        // Decompose visual-format into an array of strings, and within those strings\n        // search for line-endings, and treat each line as a seperate visual-format.\n        visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];\n        let lines;\n        let constraints = [];\n        let lineIndex = 0;\n        let line;\n        const parseOptions = {\n            lineIndex: lineIndex,\n            extended: (options && options.extended),\n            strict: (options && (options.strict !== undefined)) ? options.strict : true,\n            outFormat: options ? options.outFormat : undefined,\n            subViews: {}\n        };\n        try {\n            for (var i = 0; i < visualFormat.length; i++) {\n                lines = visualFormat[i].split(lineSeparator);\n                for (var j = 0; j < lines.length; j++) {\n                    line = lines[j];\n                    lineIndex++;\n                    parseOptions.lineIndex = lineIndex;\n                    if (!parseOptions.strict) {\n                        line = line.trim();\n                    }\n                    if (parseOptions.strict || line.length) {\n                        constraints = constraints.concat(this.parseLine(line, parseOptions));\n                    }\n                }\n            }\n        }\n        catch (err) {\n            err.source = line;\n            err.line = lineIndex;\n            throw err;\n        }\n        return constraints;\n    }\n\n    /**\n     * Parses meta information from the comments in the VFL.\n     *\n     * Additional meta information can be specified in the comments\n     * for previewing and rendering purposes. For instance, the view-port\n     * aspect-ratio, sub-view widths and colors, can be specified. The\n     * following example renders three colored circles in the visual-format editor:\n     *\n     * ```vfl\n     * //viewport aspect-ratio:3/1 max-height:300\n     * //colors red:#FF0000 green:#00FF00 blue:#0000FF\n     * //shapes red:circle green:circle blue:circle\n     * H:|-[row:[red(green,blue)]-[green]-[blue]]-|\n     * V:|[row]|\n     * ```\n     *\n     * Supported categories and properties:\n     *\n     * |Category|Property|Example|\n     * |--------|--------|-------|\n     * |`viewport`|`aspect-ratio:{width}/{height}`|`//viewport aspect-ratio:16/9`|\n     * ||`width:[{number}/intrinsic]`|`//viewport width:10`|\n     * ||`height:[{number}/intrinsic]`|`//viewport height:intrinsic`|\n     * ||`min-width:{number}`|\n     * ||`max-width:{number}`|\n     * ||`min-height:{number}`|\n     * ||`max-height:{number}`|\n     * |`spacing`|`[{number}/array]`|`//spacing:8` or `//spacing:[10, 20, 5]`|\n     * |`widths`|`{view-name}:[{number}/intrinsic]`|`//widths subview1:100`|\n     * |`heights`|`{view-name}:[{number}/intrinsic]`|`//heights subview1:intrinsic`|\n     * |`colors`|`{view-name}:{color}`|`//colors redview:#FF0000 blueview:#00FF00`|\n     * |`shapes`|`{view-name}:[circle/square]`|`//shapes avatar:circle`|\n     *\n     * @param {String|Array} visualFormat One or more visual format strings.\n     * @param {Object} [options] Configuration options.\n     * @param {String} [options.lineSeparator] String that defines the end of a line (default `\\n`).\n     * @param {String} [options.prefix] When specified, also processes the categories using that prefix (e.g. \"-dev-viewport max-height:10\").\n     * @return {Object} meta-info\n     */\n    static parseMetaInfo(visualFormat, options) {\n        const lineSeparator = (options && options.lineSeparator) ? options.lineSeparator : '\\n';\n        const prefix = options ? options.prefix : undefined;\n        visualFormat = Array.isArray(visualFormat) ? visualFormat : [visualFormat];\n        const metaInfo = {};\n        var key;\n        for (var k = 0; k < visualFormat.length; k++) {\n            const lines = visualFormat[k].split(lineSeparator);\n            for (var i = 0; i < lines.length; i++) {\n                const line = lines[i];\n                for (var c = 0; c < metaInfoCategories.length; c++) {\n                    for (var s = 0; s < (prefix ? 2 : 1); s++) {\n                        const category = metaInfoCategories[c];\n                        const prefixedCategory = ((s === 0) ? '' : prefix) + category;\n                        if (line.indexOf('//' + prefixedCategory + ' ') === 0) {\n                            const items = line.substring(3 + prefixedCategory.length).split(' ');\n                            for (var j = 0; j < items.length; j++) {\n                                metaInfo[category] = metaInfo[category] || {};\n                                const item = items[j].split(':');\n                                const names = _getRange(item[0], true);\n                                for (var r = 0; r < names.length; r++) {\n                                    metaInfo[category][names[r]] = (item.length > 1) ? item[1] : '';\n                                }\n                            }\n                        }\n                        else if (line.indexOf('//' + prefixedCategory + ':') === 0) {\n                            metaInfo[category] = line.substring(3 + prefixedCategory.length);\n                        }\n                    }\n                }\n            }\n        }\n        if (metaInfo.viewport) {\n            const viewport = metaInfo.viewport;\n            var aspectRatio = viewport['aspect-ratio'];\n            if (aspectRatio) {\n                aspectRatio = aspectRatio.split('/');\n                viewport['aspect-ratio'] = parseInt(aspectRatio[0]) / parseInt(aspectRatio[1]);\n            }\n            if (viewport.height !== undefined) {\n                viewport.height = (viewport.height === 'intrinsic') ? true : parseInt(viewport.height);\n            }\n            if (viewport.width !== undefined) {\n                viewport.width = (viewport.width === 'intrinsic') ? true : parseInt(viewport.width);\n            }\n            if (viewport['max-height'] !== undefined) {\n                viewport['max-height'] = parseInt(viewport['max-height']);\n            }\n            if (viewport['max-width'] !== undefined) {\n                viewport['max-width'] = parseInt(viewport['max-width']);\n            }\n            if (viewport['min-height'] !== undefined) {\n                viewport['min-height'] = parseInt(viewport['min-height']);\n            }\n            if (viewport['min-width'] !== undefined) {\n                viewport['min-width'] = parseInt(viewport['min-width']);\n            }\n        }\n        if (metaInfo.widths) {\n            for (key in metaInfo.widths) {\n                const width = (metaInfo.widths[key] === 'intrinsic') ? true : parseInt(metaInfo.widths[key]);\n                metaInfo.widths[key] = width;\n                if ((width === undefined) || isNaN(width)) {\n                    delete metaInfo.widths[key];\n                }\n            }\n        }\n        if (metaInfo.heights) {\n            for (key in metaInfo.heights) {\n                const height = (metaInfo.heights[key] === 'intrinsic') ? true : parseInt(metaInfo.heights[key]);\n                metaInfo.heights[key] = height;\n                if ((height === undefined) || isNaN(height)) {\n                    delete metaInfo.heights[key];\n                }\n            }\n        }\n        if (metaInfo.spacing) {\n            const value = JSON.parse(metaInfo.spacing);\n            metaInfo.spacing = value;\n            if (Array.isArray(value)){\n              for (var sIdx = 0, len = value.length; sIdx < len; sIdx++) {\n                if (isNaN(value[sIdx])){\n                  delete metaInfo.spacing;\n                  break;\n                }\n              }\n            } else if (value === undefined || isNaN(value)){\n              delete metaInfo.spacing;\n            }\n        }\n        return metaInfo;\n    }\n}\n\n/**\n * A SubView is automatically generated when constraints are added to a View.\n *\n * @namespace SubView\n */\nclass SubView {\n    constructor(options) {\n        this._name = options.name;\n        this._type = options.type;\n        this._solver = options.solver;\n        this._attr = {};\n        if (!options.name) {\n            if (process.env.CASSOWARYJS) {\n                this._attr[Attribute.LEFT] = new c.Variable();\n                this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.LEFT], c.Strength.required));\n                this._attr[Attribute.TOP] = new c.Variable();\n                this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.TOP], c.Strength.required));\n                this._attr[Attribute.ZINDEX] = new c.Variable();\n                this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.ZINDEX], c.Strength.required));\n            }\n            else {\n                this._attr[Attribute.LEFT] = new kiwi.Variable();\n                this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.LEFT], kiwi.Operator.Eq, 0));\n                this._attr[Attribute.TOP] = new kiwi.Variable();\n                this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.TOP], kiwi.Operator.Eq, 0));\n                this._attr[Attribute.ZINDEX] = new kiwi.Variable();\n                this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.ZINDEX], kiwi.Operator.Eq, 0));\n            }\n        }\n    }\n    toJSON() {\n        return {\n            name: this.name,\n            left: this.left,\n            top: this.top,\n            width: this.width,\n            height: this.height\n        };\n    }\n    toString() {\n        JSON.stringify(this.toJSON(), undefined, 2);\n    }\n\n    /**\n     * Name of the sub-view.\n     * @readonly\n     * @type {String}\n     */\n    get name() {\n        return this._name;\n    }\n\n    /**\n     * Left value (`Attribute.LEFT`).\n     * @readonly\n     * @type {Number}\n     */\n    get left() {\n        return this._getAttrValue(Attribute.LEFT);\n    }\n\n    /**\n     * Right value (`Attribute.RIGHT`).\n     * @readonly\n     * @type {Number}\n     */\n    get right() {\n        return this._getAttrValue(Attribute.RIGHT);\n    }\n\n    /**\n     * Width value (`Attribute.WIDTH`).\n     * @type {Number}\n     */\n    get width() {\n        return this._getAttrValue(Attribute.WIDTH);\n    }\n\n    /**\n     * Height value (`Attribute.HEIGHT`).\n     * @readonly\n     * @type {Number}\n     */\n    get height() {\n        return this._getAttrValue(Attribute.HEIGHT);\n    }\n\n    /**\n     * Intrinsic width of the sub-view.\n     *\n     * Use this property to explicitely set the width of the sub-view, e.g.:\n     * ```javascript\n     * var view = new AutoLayout.View(AutoLayout.VisualFormat.parse('|[child1][child2]|'), {\n     *   width: 500\n     * });\n     * view.subViews.child1.intrinsicWidth = 100;\n     * console.log('child2 width: ' + view.subViews.child2.width); // 400\n     * ```\n     *\n     * @type {Number}\n     */\n    get intrinsicWidth() {\n        return this._intrinsicWidth;\n    }\n    set intrinsicWidth(value) {\n        if ((value !== undefined) && (value !== this._intrinsicWidth)) {\n            const attr = this._getAttr(Attribute.WIDTH);\n            if (this._intrinsicWidth === undefined) {\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));\n                }\n                else {\n                    this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));\n                }\n            }\n            this._intrinsicWidth = value;\n            this._solver.suggestValue(attr, value);\n            if (process.env.CASSOWARYJS) {\n                this._solver.resolve();\n            }\n            else {\n                this._solver.updateVariables();\n            }\n        }\n    }\n\n    /**\n     * Intrinsic height of the sub-view.\n     *\n     * See `intrinsicWidth`.\n     *\n     * @type {Number}\n     */\n    get intrinsicHeight() {\n        return this._intrinsicHeight;\n    }\n    set intrinsicHeight(value) {\n        if ((value !== undefined) && (value !== this._intrinsicHeight)) {\n            const attr = this._getAttr(Attribute.HEIGHT);\n            if (this._intrinsicHeight === undefined) {\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));\n                }\n                else {\n                    this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));\n                }\n            }\n            this._intrinsicHeight = value;\n            this._solver.suggestValue(attr, value);\n            if (process.env.CASSOWARYJS) {\n                this._solver.resolve();\n            }\n            else {\n                this._solver.updateVariables();\n            }\n        }\n    }\n\n    /**\n     * Top value (`Attribute.TOP`).\n     * @readonly\n     * @type {Number}\n     */\n    get top() {\n        return this._getAttrValue(Attribute.TOP);\n    }\n\n    /**\n     * Bottom value (`Attribute.BOTTOM`).\n     * @readonly\n     * @type {Number}\n     */\n    get bottom() {\n        return this._getAttrValue(Attribute.BOTTOM);\n    }\n\n    /**\n     * Horizontal center (`Attribute.CENTERX`).\n     * @readonly\n     * @type {Number}\n     */\n    get centerX() {\n        return this._getAttrValue(Attribute.CENTERX);\n    }\n\n    /**\n     * Vertical center (`Attribute.CENTERY`).\n     * @readonly\n     * @type {Number}\n     */\n    get centerY() {\n        return this._getAttrValue(Attribute.CENTERY);\n    }\n\n    /**\n     * Z-index (`Attribute.ZINDEX`).\n     * @readonly\n     * @type {Number}\n     */\n    get zIndex() {\n        return this._getAttrValue(Attribute.ZINDEX);\n    }\n\n    /**\n     * Returns the type of the sub-view.\n     * @readonly\n     * @type {String}\n     */\n    get type() {\n        return this._type;\n    }\n\n    /**\n     * Gets the value of one of the attributes.\n     *\n     * @param {String|Attribute} attr Attribute name (e.g. 'right', 'centerY', Attribute.TOP).\n     * @return {Number} value or `undefined`\n     */\n    getValue(attr) {\n        return this._attr[attr] ? this._attr[attr].value() : undefined;\n    }\n\n    /**\n     * @private\n     */\n    _getAttr(attr) {\n        if (this._attr[attr]) {\n            return this._attr[attr];\n        }\n        this._attr[attr] = process.env.CASSOWARYJS ? new c.Variable() : new kiwi.Variable();\n        switch (attr) {\n            case Attribute.RIGHT:\n                this._getAttr(Attribute.LEFT);\n                this._getAttr(Attribute.WIDTH);\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], this._attr[Attribute.WIDTH])));\n                }\n                else {\n                    this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH])));\n                }\n                break;\n            case Attribute.BOTTOM:\n                this._getAttr(Attribute.TOP);\n                this._getAttr(Attribute.HEIGHT);\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], this._attr[Attribute.HEIGHT])));\n                }\n                else {\n                    this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT])));\n                }\n                break;\n            case Attribute.CENTERX:\n                this._getAttr(Attribute.LEFT);\n                this._getAttr(Attribute.WIDTH);\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], c.divide(this._attr[Attribute.WIDTH], 2))));\n                }\n                else {\n                    this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH].divide(2))));\n                }\n                break;\n            case Attribute.CENTERY:\n                this._getAttr(Attribute.TOP);\n                this._getAttr(Attribute.HEIGHT);\n                if (process.env.CASSOWARYJS) {\n                    this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], c.divide(this._attr[Attribute.HEIGHT], 2))));\n                }\n                else {\n                    this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT].divide(2))));\n                }\n                break;\n        }\n        if (!process.env.CASSOWARYJS) {\n            this._solver.updateVariables();\n        }\n        return this._attr[attr];\n    }\n\n    /**\n     * @private\n     */\n    _getAttrValue(attr) {\n        if (process.env.CASSOWARYJS) {\n            return this._getAttr(attr).value;\n        }\n        else {\n            return this._getAttr(attr).value();\n        }\n    }\n}\n\nconst defaultPriorityStrength = process.env.CASSOWARYJS ? new c.Strength('defaultPriority', 0, 1000, 1000) : kiwi.Strength.create(0, 1000, 1000);\n\nfunction _getConst(name, value) {\n    if (process.env.CASSOWARYJS) {\n        const vr = new c.Variable({value: value});\n        this._solver.addConstraint(new c.StayConstraint(vr, c.Strength.required, 0));\n        return vr;\n    }\n    else {\n        const vr = new kiwi.Variable();\n        this._solver.addConstraint(new kiwi.Constraint(vr, kiwi.Operator.Eq, value));\n        return vr;\n    }\n}\n\nfunction _getSubView(viewName) {\n    if (!viewName) {\n        return this._parentSubView;\n    }\n    else if (viewName.name) {\n        this._subViews[viewName.name] = this._subViews[viewName.name] || new SubView({\n            name: viewName.name,\n            solver: this._solver\n        });\n        this._subViews[viewName.name]._type = this._subViews[viewName.name]._type || viewName.type;\n        return this._subViews[viewName.name];\n    }\n    else {\n        this._subViews[viewName] = this._subViews[viewName] || new SubView({\n            name: viewName,\n            solver: this._solver\n        });\n        return this._subViews[viewName];\n    }\n}\n\nfunction _getSpacing(constraint) {\n    let index = 4;\n    if (!constraint.view1 && (constraint.attr1 === 'left')) {\n        index = 3;\n    }\n    else if (!constraint.view1 && (constraint.attr1 === 'top')) {\n        index = 0;\n    }\n    else if (!constraint.view2 && (constraint.attr2 === 'right')) {\n        index = 1;\n    }\n    else if (!constraint.view2 && (constraint.attr2 === 'bottom')) {\n        index = 2;\n    }\n    else {\n        switch (constraint.attr1) {\n            case 'left':\n            case 'right':\n            case 'centerX':\n            case 'leading':\n            case 'trailing':\n                index = 4;\n                break;\n            case 'zIndex':\n                index = 6;\n                break;\n            default:\n                index = 5;\n        }\n    }\n    this._spacingVars = this._spacingVars || new Array(7);\n    this._spacingExpr = this._spacingExpr || new Array(7);\n    if (!this._spacingVars[index]) {\n        if (process.env.CASSOWARYJS) {\n            this._spacingVars[index] = new c.Variable();\n            this._solver.addEditVar(this._spacingVars[index]);\n            this._spacingExpr[index] = c.minus(0, this._spacingVars[index]);\n        }\n        else {\n            this._spacingVars[index] = new kiwi.Variable();\n            this._solver.addEditVariable(this._spacingVars[index], kiwi.Strength.create(999, 1000, 1000));\n            this._spacingExpr[index] = this._spacingVars[index].multiply(-1);\n        }\n        this._solver.suggestValue(this._spacingVars[index], this._spacing[index]);\n    }\n    return this._spacingExpr[index];\n}\n\nfunction _addConstraint(constraint) {\n    //this.constraints.push(constraint);\n    let relation;\n    const multiplier = (constraint.multiplier !== undefined) ? constraint.multiplier : 1;\n    let constant = (constraint.constant !== undefined) ? constraint.constant : 0;\n    if (constant === 'default') {\n        constant = _getSpacing.call(this, constraint);\n    }\n    const attr1 = _getSubView.call(this, constraint.view1)._getAttr(constraint.attr1);\n    let attr2;\n    if (process.env.CASSOWARYJS) {\n        if (constraint.attr2 === Attribute.CONST) {\n            attr2 = _getConst.call(this, undefined, constraint.constant);\n        }\n        else {\n            attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);\n            if ((multiplier !== 1) && constant) {\n                attr2 = c.plus(c.times(attr2, multiplier), constant);\n            }\n            else if (constant) {\n                attr2 = c.plus(attr2, constant);\n            }\n            else if (multiplier !== 1) {\n                attr2 = c.times(attr2, multiplier);\n            }\n        }\n        const strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? new c.Strength('priority', 0, constraint.priority, 1000) : defaultPriorityStrength;\n        switch (constraint.relation) {\n            case Relation.EQU:\n                relation = new c.Equation(attr1, attr2, strength);\n                break;\n            case Relation.GEQ:\n                relation = new c.Inequality(attr1, c.GEQ, attr2, strength);\n                break;\n            case Relation.LEQ:\n                relation = new c.Inequality(attr1, c.LEQ, attr2, strength);\n                break;\n            default:\n                throw 'Invalid relation specified: ' + constraint.relation;\n        }\n    }\n    else {\n        if (constraint.attr2 === Attribute.CONST) {\n            attr2 = _getConst.call(this, undefined, constraint.constant);\n        }\n        else {\n            attr2 = _getSubView.call(this, constraint.view2)._getAttr(constraint.attr2);\n            if ((multiplier !== 1) && constant) {\n                attr2 = attr2.multiply(multiplier).plus(constant);\n            }\n            else if (constant) {\n                attr2 = attr2.plus(constant);\n            }\n            else if (multiplier !== 1) {\n                attr2 = attr2.multiply(multiplier);\n            }\n        }\n        const strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? kiwi.Strength.create(0, constraint.priority, 1000) : defaultPriorityStrength;\n        switch (constraint.relation) {\n            case Relation.EQU:\n                relation = new kiwi.Constraint(attr1, kiwi.Operator.Eq, attr2, strength);\n                break;\n            case Relation.GEQ:\n                relation = new kiwi.Constraint(attr1, kiwi.Operator.Ge, attr2, strength);\n                break;\n            case Relation.LEQ:\n                relation = new kiwi.Constraint(attr1, kiwi.Operator.Le, attr2, strength);\n                break;\n            default:\n                throw 'Invalid relation specified: ' + constraint.relation;\n        }\n    }\n    this._solver.addConstraint(relation);\n}\n\nfunction _compareSpacing(old, newz) {\n    if (old === newz) {\n        return true;\n    }\n    if (!old || !newz) {\n        return false;\n    }\n    for (var i = 0; i < 7; i++) {\n        if (old[i] !== newz[i]) {\n            return false;\n        }\n    }\n    return true;\n}\n\n/**\n * AutoLayoutJS API reference.\n *\n * ### Index\n *\n * |Entity|Type|Description|\n * |---|---|---|\n * |[AutoLayout](#autolayout)|`namespace`|Top level AutoLayout object.|\n * |[VisualFormat](#autolayoutvisualformat--object)|`namespace`|Parses VFL into constraints.|\n * |[View](#autolayoutview)|`class`|Main entity for adding & evaluating constraints.|\n * |[SubView](#autolayoutsubview--object)|`class`|SubView's are automatically created when constraints are added to views. They give access to the evaluated results.|\n * |[Attribute](#autolayoutattribute--enum)|`enum`|Attribute types that are supported when adding constraints.|\n * |[Relation](#autolayoutrelation--enum)|`enum`|Relationship types that are supported when adding constraints.|\n * |[Priority](#autolayoutpriority--enum)|`enum`|Default priority values for when adding constraints.|\n *\n * ### AutoLayout\n *\n * @module AutoLayout\n */\nclass View {\n\n    /**\n     * @class View\n     * @param {Object} [options] Configuration options.\n     * @param {Number} [options.width] Initial width of the view.\n     * @param {Number} [options.height] Initial height of the view.\n     * @param {Number|Object} [options.spacing] Spacing for the view (default: 8) (see `setSpacing`).\n     * @param {Array} [options.constraints] One or more constraint definitions (see `addConstraints`).\n     */\n    constructor(options) {\n        this._solver = process.env.CASSOWARYJS ? new c.SimplexSolver() : new kiwi.Solver();\n        this._subViews = {};\n        //this._spacing = undefined;\n        this._parentSubView = new SubView({\n            solver: this._solver\n        });\n        this.setSpacing((options && (options.spacing !== undefined)) ? options.spacing : 8);\n        //this.constraints = [];\n        if (options) {\n            if ((options.width !== undefined) || (options.height !== undefined)) {\n                this.setSize(options.width, options.height);\n            }\n            if (options.constraints) {\n                this.addConstraints(options.constraints);\n            }\n        }\n    }\n\n    /**\n     * Sets the width and height of the view.\n     *\n     * @param {Number} width Width of the view.\n     * @param {Number} height Height of the view.\n     * @return {View} this\n     */\n    setSize(width, height /*, depth*/) {\n        this._parentSubView.intrinsicWidth = width;\n        this._parentSubView.intrinsicHeight = height;\n        return this;\n    }\n\n    /**\n     * Width that was set using `setSize`.\n     * @readonly\n     * @type {Number}\n     */\n    get width() {\n        return this._parentSubView.intrinsicWidth;\n    }\n\n    /**\n     * Height that was set using `setSize`.\n     * @readonly\n     * @type {Number}\n     */\n    get height() {\n        return this._parentSubView.intrinsicHeight;\n    }\n\n    /**\n     * Width that is calculated from the constraints and the `.intrinsicWidth` of\n     * the sub-views.\n     *\n     * When the width has been explicitely set using `setSize`, the fittingWidth\n     * will **always** be the same as the explicitely set width. To calculate the size\n     * based on the content, use:\n     * ```javascript\n     * var view = new AutoLayout.View({\n     *   constraints: VisualFormat.parse('|-[view1]-[view2]-'),\n     *   spacing: 20\n     * });\n     * view.subViews.view1.intrinsicWidth = 100;\n     * view.subViews.view2.intrinsicWidth = 100;\n     * console.log('fittingWidth: ' + view.fittingWidth); // 260\n     * ```\n     *\n     * @readonly\n     * @type {Number}\n     */\n    get fittingWidth() {\n        return this._parentSubView.width;\n    }\n\n    /**\n     * Height that is calculated from the constraints and the `.intrinsicHeight` of\n     * the sub-views.\n     *\n     * See `.fittingWidth`.\n     *\n     * @readonly\n     * @type {Number}\n     */\n    get fittingHeight() {\n        return this._parentSubView.height;\n    }\n\n    /**\n     * Sets the spacing for the view.\n     *\n     * The spacing can be set for 7 different variables:\n     * `top`, `right`, `bottom`, `left`, `width`, `height` and `zIndex`. The `left`-spacing is\n     * used when a spacer is used between the parent-view and a sub-view (e.g. `|-[subView]`).\n     * The same is true for the `right`, `top` and `bottom` spacers. The `width` and `height` are\n     * used for spacers in between sub-views (e.g. `[view1]-[view2]`).\n     *\n     * Instead of using the full spacing syntax, it is also possible to use shorthand notations:\n     *\n     * |Syntax|Type|Description|\n     * |---|---|---|\n     * |`[top, right, bottom, left, width, height, zIndex]`|Array(7)|Full syntax including z-index **(clockwise order)**.|\n     * |`[top, right, bottom, left, width, height]`|Array(6)|Full horizontal & vertical spacing syntax (no z-index) **(clockwise order)**.|\n     * |`[horizontal, vertical, zIndex]`|Array(3)|Horizontal = left, right, width, vertical = top, bottom, height.|\n     * |`[horizontal, vertical]`|Array(2)|Horizontal = left, right, width, vertical = top, bottom, height, z-index = 1.|\n     * |`spacing`|Number|Horizontal & vertical spacing are all the same, z-index = 1.|\n     *\n     * Examples:\n     * ```javascript\n     * view.setSpacing(10); // horizontal & vertical spacing 10\n     * view.setSpacing([10, 15, 2]); // horizontal spacing 10, vertical spacing 15, z-axis spacing 2\n     * view.setSpacing([10, 20, 10, 20, 5, 5]); // top, right, bottom, left, horizontal, vertical\n     * view.setSpacing([10, 20, 10, 20, 5, 5, 1]); // top, right, bottom, left, horizontal, vertical, z\n     * ```\n     *\n     * @param {Number|Array} spacing\n     * @return {View} this\n     */\n    setSpacing(spacing) {\n        // convert spacing into array: [top, right, bottom, left, horz, vert, z-index]\n        switch (Array.isArray(spacing) ? spacing.length : -1) {\n            case -1: spacing = [spacing, spacing, spacing, spacing, spacing, spacing, 1]; break;\n            case 1: spacing = [spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], spacing[0], 1]; break;\n            case 2: spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], 1]; break;\n            case 3: spacing = [spacing[1], spacing[0], spacing[1], spacing[0], spacing[0], spacing[1], spacing[2]]; break;\n            case 6: spacing = [spacing[0], spacing[1], spacing[2], spacing[3], spacing[4], spacing[5], 1]; break;\n            case 7: break;\n            default: throw 'Invalid spacing syntax';\n        }\n        if (!_compareSpacing(this._spacing, spacing)) {\n            this._spacing = spacing;\n            // update spacing variables\n            if (this._spacingVars) {\n                for (var i = 0; i < this._spacingVars.length; i++) {\n                    if (this._spacingVars[i]) {\n                        this._solver.suggestValue(this._spacingVars[i], this._spacing[i]);\n                    }\n                }\n                if (process.env.CASSOWARYJS) {\n                    this._solver.resolve();\n                }\n                else {\n                    this._solver.updateVariables();\n                }\n            }\n        }\n        return this;\n    }\n\n    /**\n     * Adds a constraint definition.\n     *\n     * A constraint definition has the following format:\n     *\n     * ```javascript\n     * constraint: {\n     *   view1: {String},\n     *   attr1: {AutoLayout.Attribute},\n     *   relation: {AutoLayout.Relation},\n     *   view2: {String},\n     *   attr2: {AutoLayout.Attribute},\n     *   multiplier: {Number},\n     *   constant: {Number},\n     *   priority: {Number}(0..1000)\n     * }\n     * ```\n     * @param {Object} constraint Constraint definition.\n     * @return {View} this\n     */\n    addConstraint(constraint) {\n        _addConstraint.call(this, constraint);\n        if (!process.env.CASSOWARYJS) {\n            this._solver.updateVariables();\n        }\n        return this;\n    }\n\n    /**\n     * Adds one or more constraint definitions.\n     *\n     * A constraint definition has the following format:\n     *\n     * ```javascript\n     * constraint: {\n     *   view1: {String},\n     *   attr1: {AutoLayout.Attribute},\n     *   relation: {AutoLayout.Relation},\n     *   view2: {String},\n     *   attr2: {AutoLayout.Attribute},\n     *   multiplier: {Number},\n     *   constant: {Number},\n     *   priority: {Number}(0..1000)\n     * }\n     * ```\n     * @param {Array} constraints One or more constraint definitions.\n     * @return {View} this\n     */\n    addConstraints(constraints) {\n        for (var j = 0; j < constraints.length; j++) {\n            _addConstraint.call(this, constraints[j]);\n        }\n        if (!process.env.CASSOWARYJS) {\n            this._solver.updateVariables();\n        }\n        return this;\n    }\n\n    /**\n     * Dictionary of `SubView` objects that have been created when adding constraints.\n     * @readonly\n     * @type {Object.SubView}\n     */\n    get subViews() {\n        return this._subViews;\n    }\n\n    /**\n     * Checks whether the constraints incompletely specify the location\n     * of the subViews.\n     * @private\n     */\n    //get hasAmbiguousLayout() {\n        // Todo\n    //}\n}\n\n//import DOM from './DOM';\n\n/**\n * AutoLayout.\n *\n * @namespace AutoLayout\n * @property {Attribute} Attribute\n * @property {Relation} Relation\n * @property {Priority} Priority\n * @property {VisualFormat} VisualFormat\n * @property {View} View\n * @property {SubView} SubView\n */\nvar AutoLayout = {\n    Attribute: Attribute,\n    Relation: Relation,\n    Priority: Priority,\n    VisualFormat: VisualFormat,\n    View: View,\n    SubView: SubView\n    //DOM: DOM\n};\n\nmodule.exports = AutoLayout;","/**\n * Parts Copyright (C) 2011-2012, Alex Russell (slightlyoff@chromium.org)\n * Parts Copyright (C) Copyright (C) 1998-2000 Greg J. Badros\n *\n * Use of this source code is governed by the LGPL, which can be found in the\n * COPYING.LGPL file.\n *\n * This is a compiled version of Cassowary/JS. 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a.inherit({\"extends\":a.Error,initialize:function(){a.Error.apply(this,arguments)},_name:b||\"\",_description:c||\"\"})};a.ConstraintNotFound=b(\"c.ConstraintNotFound\",\"Tried to remove a constraint never added to the tableu\"),a.InternalError=b(\"c.InternalError\"),a.NonExpression=b(\"c.NonExpression\",\"The resulting expression would be non\"),a.NotEnoughStays=b(\"c.NotEnoughStays\",\"There are not enough stays to give specific values to every variable\"),a.RequiredFailure=b(\"c.RequiredFailure\",\"A required constraint cannot be satisfied\"),a.TooDifficult=b(\"c.TooDifficult\",\"The constraints are too difficult to solve\")}(this.c||module.parent.exports||{}),function(a){\"use strict\";var b=1e3;a.SymbolicWeight=a.inherit({_t:\"c.SymbolicWeight\",initialize:function(){this.value=0;for(var a=1,c=arguments.length-1;c>=0;--c)this.value+=arguments[c]*a,a*=b},toJSON:function(){return{_t:this._t,value:this.value}}})}(this.c||module.parent.exports||{}),function(a){a.Strength=a.inherit({initialize:function(b,c,d,e){this.name=b,this.symbolicWeight=c instanceof a.SymbolicWeight?c:new a.SymbolicWeight(c,d,e)},get required(){return this===a.Strength.required},toString:function(){return this.name+(this.isRequired?\"\":\":\"+this.symbolicWeight)}}),a.Strength.required=new a.Strength(\"<Required>\",1e3,1e3,1e3),a.Strength.strong=new a.Strength(\"strong\",1,0,0),a.Strength.medium=new a.Strength(\"medium\",0,1,0),a.Strength.weak=new a.Strength(\"weak\",0,0,1)}(this.c||(\"undefined\"!=typeof module?module.parent.exports.c:{})),function(a){\"use strict\";a.AbstractVariable=a.inherit({isDummy:!1,isExternal:!1,isPivotable:!1,isRestricted:!1,_init:function(b,c){this.hashCode=a._inc(),this.name=(c||\"\")+this.hashCode,b&&(b.name!==void 0&&(this.name=b.name),b.value!==void 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c=a.Variable._map;c&&(c[this.name]=this)},isExternal:!0}),a.DummyVariable=a.inherit({_t:\"c.DummyVariable\",\"extends\":a.AbstractVariable,initialize:function(a){this._init(a,\"d\")},isDummy:!0,isRestricted:!0,value:\"dummy\"}),a.ObjectiveVariable=a.inherit({_t:\"c.ObjectiveVariable\",\"extends\":a.AbstractVariable,initialize:function(a){this._init(a,\"o\")},value:\"obj\"}),a.SlackVariable=a.inherit({_t:\"c.SlackVariable\",\"extends\":a.AbstractVariable,initialize:function(a){this._init(a,\"s\")},isPivotable:!0,isRestricted:!0,value:\"slack\"})}(this.c||module.parent.exports||{}),function(a){\"use strict\";a.Point=a.inherit({initialize:function(b,c,d){if(b instanceof a.Variable)this._x=b;else{var e={value:b};d&&(e.name=\"x\"+d),this._x=new a.Variable(e)}if(c instanceof a.Variable)this._y=c;else{var f={value:c};d&&(f.name=\"y\"+d),this._y=new a.Variable(f)}},get x(){return this._x},set x(b){b instanceof a.Variable?this._x=b:this._x.value=b},get y(){return this._y},set y(b){b instanceof a.Variable?this._y=b:this._y.value=b},toString:function(){return\"(\"+this.x+\", \"+this.y+\")\"}})}(this.c||module.parent.exports||{}),function(a){\"use strict\";a.Expression=a.inherit({initialize:function(b,c,d){a.GC&&console.log(\"new c.Expression\"),this.constant=\"number\"!=typeof d||isNaN(d)?0:d,this.terms=new a.HashTable,b instanceof a.AbstractVariable?this.setVariable(b,\"number\"==typeof c?c:1):\"number\"==typeof b&&(isNaN(b)?console.trace():this.constant=b)},initializeFromHash:function(b,c){return a.verbose&&(console.log(\"*******************************\"),console.log(\"clone c.initializeFromHash\"),console.log(\"*******************************\")),a.GC&&console.log(\"clone c.Expression\"),this.constant=b,this.terms=c.clone(),this},multiplyMe:function(a){this.constant*=a;var b=this.terms;return b.each(function(c,d){b.set(c,d*a)}),this},clone:function(){a.verbose&&(console.log(\"*******************************\"),console.log(\"clone c.Expression\"),console.log(\"*******************************\"));var b=new a.Expression;return b.initializeFromHash(this.constant,this.terms),b},times:function(b){if(\"number\"==typeof b)return this.clone().multiplyMe(b);if(this.isConstant)return b.times(this.constant);if(b.isConstant)return this.times(b.constant);throw new a.NonExpression},plus:function(b){return b instanceof a.Expression?this.clone().addExpression(b,1):b instanceof a.Variable?this.clone().addVariable(b,1):void 0},minus:function(b){return b instanceof a.Expression?this.clone().addExpression(b,-1):b instanceof a.Variable?this.clone().addVariable(b,-1):void 0},divide:function(b){if(\"number\"==typeof b){if(a.approx(b,0))throw new a.NonExpression;return this.times(1/b)}if(b instanceof a.Expression){if(!b.isConstant)throw new a.NonExpression;return this.times(1/b.constant)}},addExpression:function(b,c,d,e){return b instanceof a.AbstractVariable&&(b=new a.Expression(b),a.trace&&console.log(\"addExpression: Had to cast a var to an expression\")),c=c||1,this.constant+=c*b.constant,b.terms.each(function(a,b){this.addVariable(a,b*c,d,e)},this),this},addVariable:function(b,c,d,e){null==c&&(c=1),a.trace&&console.log(\"c.Expression::addVariable():\",b,c);var f=this.terms.get(b);if(f){var g=f+c;0==g||a.approx(g,0)?(e&&e.noteRemovedVariable(b,d),this.terms.delete(b)):this.setVariable(b,g)}else a.approx(c,0)||(this.setVariable(b,c),e&&e.noteAddedVariable(b,d));return this},setVariable:function(a,b){return this.terms.set(a,b),this},anyPivotableVariable:function(){if(this.isConstant)throw new a.InternalError(\"anyPivotableVariable called on a constant\");var b=this.terms.escapingEach(function(a){return a.isPivotable?{retval:a}:void 0});return b&&void 0!==b.retval?b.retval:null},substituteOut:function(b,c,d,e){a.trace&&(a.fnenterprint(\"CLE:substituteOut: \"+b+\", \"+c+\", \"+d+\", ...\"),a.traceprint(\"this = \"+this));var f=this.setVariable.bind(this),g=this.terms,h=g.get(b);g.delete(b),this.constant+=h*c.constant,c.terms.each(function(b,c){var i=g.get(b);if(i){var j=i+h*c;a.approx(j,0)?(e.noteRemovedVariable(b,d),g.delete(b)):f(b,j)}else f(b,h*c),e&&e.noteAddedVariable(b,d)}),a.trace&&a.traceprint(\"Now this is \"+this)},changeSubject:function(a,b){this.setVariable(a,this.newSubject(b))},newSubject:function(b){a.trace&&a.fnenterprint(\"newSubject:\"+b);var c=1/this.terms.get(b);return this.terms.delete(b),this.multiplyMe(-c),c},coefficientFor:function(a){return this.terms.get(a)||0},get isConstant(){return 0==this.terms.size},toString:function(){var b=\"\",c=!1;if(!a.approx(this.constant,0)||this.isConstant){if(b+=this.constant,this.isConstant)return b;c=!0}return this.terms.each(function(a,d){c&&(b+=\" + \"),b+=d+\"*\"+a,c=!0}),b},equals:function(b){return b===this?!0:b instanceof a.Expression&&b.constant===this.constant&&b.terms.equals(this.terms)},Plus:function(a,b){return a.plus(b)},Minus:function(a,b){return a.minus(b)},Times:function(a,b){return a.times(b)},Divide:function(a,b){return a.divide(b)}})}(this.c||module.parent.exports||{}),function(a){\"use strict\";a.AbstractConstraint=a.inherit({initialize:function(b,c){this.hashCode=a._inc(),this.strength=b||a.Strength.required,this.weight=c||1},isEditConstraint:!1,isInequality:!1,isStayConstraint:!1,get required(){return this.strength===a.Strength.required},toString:function(){return this.strength+\" {\"+this.weight+\"} (\"+this.expression+\")\"}});var b=a.AbstractConstraint.prototype.toString,c=function(b,c,d){a.AbstractConstraint.call(this,c||a.Strength.strong,d),this.variable=b,this.expression=new a.Expression(b,-1,b.value)};a.EditConstraint=a.inherit({\"extends\":a.AbstractConstraint,initialize:function(){c.apply(this,arguments)},isEditConstraint:!0,toString:function(){return\"edit:\"+b.call(this)}}),a.StayConstraint=a.inherit({\"extends\":a.AbstractConstraint,initialize:function(){c.apply(this,arguments)},isStayConstraint:!0,toString:function(){return\"stay:\"+b.call(this)}});var d=a.Constraint=a.inherit({\"extends\":a.AbstractConstraint,initialize:function(b,c,d){a.AbstractConstraint.call(this,c,d),this.expression=b}});a.Inequality=a.inherit({\"extends\":a.Constraint,_cloneOrNewCle:function(b){return b.clone?b.clone():new a.Expression(b)},initialize:function(b,c,e,f,g){var h=b instanceof a.Expression,i=e instanceof a.Expression,j=b instanceof a.AbstractVariable,k=e instanceof a.AbstractVariable,l=\"number\"==typeof b,m=\"number\"==typeof e;if((h||l)&&k){var n=b,o=c,p=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(n),q,r),o==a.LEQ)this.expression.multiplyMe(-1),this.expression.addVariable(p);else{if(o!=a.GEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");this.expression.addVariable(p,-1)}}else if(j&&(i||m)){var n=e,o=c,p=b,q=f,r=g;if(d.call(this,this._cloneOrNewCle(n),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addVariable(p);else{if(o!=a.LEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");this.expression.addVariable(p,-1)}}else{if(h&&m){var s=b,o=c,t=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(s),q,r),o==a.LEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(t));else{if(o!=a.GEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");this.expression.addExpression(this._cloneOrNewCle(t),-1)}return this}if(l&&i){var s=e,o=c,t=b,q=f,r=g;if(d.call(this,this._cloneOrNewCle(s),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(t));else{if(o!=a.LEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");this.expression.addExpression(this._cloneOrNewCle(t),-1)}return this}if(h&&i){var s=b,o=c,t=e,q=f,r=g;if(d.call(this,this._cloneOrNewCle(t),q,r),o==a.GEQ)this.expression.multiplyMe(-1),this.expression.addExpression(this._cloneOrNewCle(s));else{if(o!=a.LEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");this.expression.addExpression(this._cloneOrNewCle(s),-1)}}else{if(h)return d.call(this,b,c,e);if(c==a.GEQ)d.call(this,new a.Expression(e),f,g),this.expression.multiplyMe(-1),this.expression.addVariable(b);else{if(c!=a.LEQ)throw new a.InternalError(\"Invalid operator in c.Inequality constructor\");d.call(this,new a.Expression(e),f,g),this.expression.addVariable(b,-1)}}}},isInequality:!0,toString:function(){return d.prototype.toString.call(this)+\" >= 0) id: \"+this.hashCode}}),a.Equation=a.inherit({\"extends\":a.Constraint,initialize:function(b,c,e,f){if(b instanceof a.Expression&&!c||c instanceof a.Strength)d.call(this,b,c,e);else if(b instanceof a.AbstractVariable&&c instanceof a.Expression){var g=b,h=c,i=e,j=f;d.call(this,h.clone(),i,j),this.expression.addVariable(g,-1)}else if(b instanceof a.AbstractVariable&&\"number\"==typeof c){var g=b,k=c,i=e,j=f;d.call(this,new a.Expression(k),i,j),this.expression.addVariable(g,-1)}else if(b instanceof a.Expression&&c instanceof a.AbstractVariable){var h=b,g=c,i=e,j=f;d.call(this,h.clone(),i,j),this.expression.addVariable(g,-1)}else{if(!(b instanceof a.Expression||b instanceof a.AbstractVariable||\"number\"==typeof b)||!(c instanceof a.Expression||c instanceof a.AbstractVariable||\"number\"==typeof c))throw\"Bad initializer to c.Equation\";b=b instanceof a.Expression?b.clone():new a.Expression(b),c=c instanceof a.Expression?c.clone():new a.Expression(c),d.call(this,b,e,f),this.expression.addExpression(c,-1)}a.assert(this.strength instanceof a.Strength,\"_strength not set\")},toString:function(){return d.prototype.toString.call(this)+\" = 0)\"}})}(this.c||module.parent.exports||{}),function(a){\"use strict\";a.EditInfo=a.inherit({initialize:function(a,b,c,d,e){this.constraint=a,this.editPlus=b,this.editMinus=c,this.prevEditConstant=d,this.index=e},toString:function(){return\"<cn=\"+this.constraint+\", ep=\"+this.editPlus+\", em=\"+this.editMinus+\", pec=\"+this.prevEditConstant+\", index=\"+this.index+\">\"}})}(this.c||module.parent.exports||{}),function(a){\"use strict\";a.Tableau=a.inherit({initialize:function(){this.columns=new a.HashTable,this.rows=new a.HashTable,this._infeasibleRows=new a.HashSet,this._externalRows=new a.HashSet,this._externalParametricVars=new a.HashSet},noteRemovedVariable:function(b,c){a.trace&&console.log(\"c.Tableau::noteRemovedVariable: \",b,c);var d=this.columns.get(b);c&&d&&d.delete(c)},noteAddedVariable:function(a,b){b&&this.insertColVar(a,b)},getInternalInfo:function(){var a=\"Tableau Information:\\n\";return a+=\"Rows: \"+this.rows.size,a+=\" (= \"+(this.rows.size-1)+\" constraints)\",a+=\"\\nColumns: \"+this.columns.size,a+=\"\\nInfeasible Rows: \"+this._infeasibleRows.size,a+=\"\\nExternal basic variables: \"+this._externalRows.size,a+=\"\\nExternal parametric variables: \",a+=this._externalParametricVars.size,a+=\"\\n\"},toString:function(){var a=\"Tableau:\\n\";return this.rows.each(function(b,c){a+=b,a+=\" <==> \",a+=c,a+=\"\\n\"}),a+=\"\\nColumns:\\n\",a+=this.columns,a+=\"\\nInfeasible rows: \",a+=this._infeasibleRows,a+=\"External basic variables: \",a+=this._externalRows,a+=\"External parametric variables: \",a+=this._externalParametricVars},insertColVar:function(b,c){var d=this.columns.get(b);d||(d=new a.HashSet,this.columns.set(b,d)),d.add(c)},addRow:function(b,c){a.trace&&a.fnenterprint(\"addRow: \"+b+\", \"+c),this.rows.set(b,c),c.terms.each(function(a){this.insertColVar(a,b),a.isExternal&&this._externalParametricVars.add(a)},this),b.isExternal&&this._externalRows.add(b),a.trace&&a.traceprint(\"\"+this)},removeColumn:function(b){a.trace&&a.fnenterprint(\"removeColumn:\"+b);var c=this.columns.get(b);c?(this.columns.delete(b),c.each(function(a){var c=this.rows.get(a);c.terms.delete(b)},this)):a.trace&&console.log(\"Could not find var\",b,\"in columns\"),b.isExternal&&(this._externalRows.delete(b),this._externalParametricVars.delete(b))},removeRow:function(b){a.trace&&a.fnenterprint(\"removeRow:\"+b);var c=this.rows.get(b);return a.assert(null!=c),c.terms.each(function(c){var e=this.columns.get(c);null!=e&&(a.trace&&console.log(\"removing from varset:\",b),e.delete(b))},this),this._infeasibleRows.delete(b),b.isExternal&&this._externalRows.delete(b),this.rows.delete(b),a.trace&&a.fnexitprint(\"returning \"+c),c},substituteOut:function(b,c){a.trace&&a.fnenterprint(\"substituteOut:\"+b+\", \"+c),a.trace&&a.traceprint(\"\"+this);var d=this.columns.get(b);d.each(function(a){var d=this.rows.get(a);d.substituteOut(b,c,a,this),a.isRestricted&&0>d.constant&&this._infeasibleRows.add(a)},this),b.isExternal&&(this._externalRows.add(b),this._externalParametricVars.delete(b)),this.columns.delete(b)},columnsHasKey:function(a){return!!this.columns.get(a)}})}(this.c||module.parent.exports||{}),function(a){var b=a.Tableau,c=b.prototype,d=1e-8,e=a.Strength.weak;a.SimplexSolver=a.inherit({\"extends\":a.Tableau,initialize:function(){a.Tableau.call(this),this._stayMinusErrorVars=[],this._stayPlusErrorVars=[],this._errorVars=new a.HashTable,this._markerVars=new a.HashTable,this._objective=new a.ObjectiveVariable({name:\"Z\"}),this._editVarMap=new a.HashTable,this._editVarList=[],this._slackCounter=0,this._artificialCounter=0,this._dummyCounter=0,this.autoSolve=!0,this._fNeedsSolving=!1,this._optimizeCount=0,this.rows.set(this._objective,new a.Expression),this._stkCedcns=[0],a.trace&&a.traceprint(\"objective expr == \"+this.rows.get(this._objective))},addLowerBound:function(b,c){var d=new a.Inequality(b,a.GEQ,new a.Expression(c));return this.addConstraint(d)},addUpperBound:function(b,c){var d=new a.Inequality(b,a.LEQ,new a.Expression(c));return this.addConstraint(d)},addBounds:function(a,b,c){return this.addLowerBound(a,b),this.addUpperBound(a,c),this},add:function(){for(var a=0;arguments.length>a;a++)this.addConstraint(arguments[a]);return this},addConstraint:function(b){a.trace&&a.fnenterprint(\"addConstraint: \"+b);var c=Array(2),d=Array(1),e=this.newExpression(b,c,d);if(d=d[0],this.tryAddingDirectly(e)||this.addWithArtificialVariable(e),this._fNeedsSolving=!0,b.isEditConstraint){var f=this._editVarMap.size,g=c[0],h=c[1];!g instanceof a.SlackVariable&&console.warn(\"cvEplus not a slack variable =\",g),!h instanceof a.SlackVariable&&console.warn(\"cvEminus not a slack variable =\",h),a.debug&&console.log(\"new c.EditInfo(\"+b+\", \"+g+\", \"+h+\", \"+d+\", \"+f+\")\");var i=new a.EditInfo(b,g,h,d,f);this._editVarMap.set(b.variable,i),this._editVarList[f]={v:b.variable,info:i}}return this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},addConstraintNoException:function(b){a.trace&&a.fnenterprint(\"addConstraintNoException: \"+b);try{return this.addConstraint(b),!0}catch(c){return!1}},addEditVar:function(b,c){return a.trace&&a.fnenterprint(\"addEditVar: \"+b+\" @ \"+c),this.addConstraint(new a.EditConstraint(b,c||a.Strength.strong))},beginEdit:function(){return a.assert(this._editVarMap.size>0,\"_editVarMap.size > 0\"),this._infeasibleRows.clear(),this._resetStayConstants(),this._stkCedcns.push(this._editVarMap.size),this},endEdit:function(){return a.assert(this._editVarMap.size>0,\"_editVarMap.size > 0\"),this.resolve(),this._stkCedcns.pop(),this.removeEditVarsTo(this._stkCedcns[this._stkCedcns.length-1]),this},removeAllEditVars:function(){return this.removeEditVarsTo(0)},removeEditVarsTo:function(b){try{for(var c=this._editVarList.length,d=b;c>d;d++)this._editVarList[d]&&this.removeConstraint(this._editVarMap.get(this._editVarList[d].v).constraint);return this._editVarList.length=b,a.assert(this._editVarMap.size==b,\"_editVarMap.size == n\"),this}catch(e){throw new a.InternalError(\"Constraint not found in removeEditVarsTo\")}},addPointStays:function(b){return a.trace&&console.log(\"addPointStays\",b),b.forEach(function(a,b){this.addStay(a.x,e,Math.pow(2,b)),this.addStay(a.y,e,Math.pow(2,b))},this),this},addStay:function(b,c,d){var f=new a.StayConstraint(b,c||e,d||1);return this.addConstraint(f)},removeConstraint:function(a){return this.removeConstraintInternal(a),this},removeConstraintInternal:function(b){a.trace&&a.fnenterprint(\"removeConstraintInternal: \"+b),a.trace&&a.traceprint(\"\"+this),this._fNeedsSolving=!0,this._resetStayConstants();var c=this.rows.get(this._objective),d=this._errorVars.get(b);a.trace&&a.traceprint(\"eVars == \"+d),null!=d&&d.each(function(e){var f=this.rows.get(e);null==f?c.addVariable(e,-b.weight*b.strength.symbolicWeight.value,this._objective,this):c.addExpression(f,-b.weight*b.strength.symbolicWeight.value,this._objective,this),a.trace&&a.traceprint(\"now eVars == \"+d)},this);var e=this._markerVars.get(b);if(this._markerVars.delete(b),null==e)throw new a.InternalError(\"Constraint not found in removeConstraintInternal\");if(a.trace&&a.traceprint(\"Looking to remove var \"+e),null==this.rows.get(e)){var f=this.columns.get(e);a.trace&&a.traceprint(\"Must pivot -- columns are \"+f);var g=null,h=0;f.each(function(b){if(b.isRestricted){var c=this.rows.get(b),d=c.coefficientFor(e);if(a.trace&&a.traceprint(\"Marker \"+e+\"'s coefficient in \"+c+\" is \"+d),0>d){var f=-c.constant/d;(null==g||h>f||a.approx(f,h)&&b.hashCode<g.hashCode)&&(h=f,g=b)}}},this),null==g&&(a.trace&&a.traceprint(\"exitVar is still null\"),f.each(function(a){if(a.isRestricted){var b=this.rows.get(a),c=b.coefficientFor(e),d=b.constant/c;(null==g||h>d)&&(h=d,g=a)}},this)),null==g&&(0==f.size?this.removeColumn(e):f.escapingEach(function(a){return a!=this._objective?(g=a,{brk:!0}):void 0},this)),null!=g&&this.pivot(e,g)}if(null!=this.rows.get(e)&&this.removeRow(e),null!=d&&d.each(function(a){a!=e&&this.removeColumn(a)},this),b.isStayConstraint){if(null!=d)for(var j=0;this._stayPlusErrorVars.length>j;j++)d.delete(this._stayPlusErrorVars[j]),d.delete(this._stayMinusErrorVars[j])}else if(b.isEditConstraint){a.assert(null!=d,\"eVars != null\");var k=this._editVarMap.get(b.variable);this.removeColumn(k.editMinus),this._editVarMap.delete(b.variable)}return null!=d&&this._errorVars.delete(d),this.autoSolve&&(this.optimize(this._objective),this._setExternalVariables()),this},reset:function(){throw a.trace&&a.fnenterprint(\"reset\"),new a.InternalError(\"reset not implemented\")},resolveArray:function(b){a.trace&&a.fnenterprint(\"resolveArray\"+b);var c=b.length;this._editVarMap.each(function(a,d){var e=d.index;c>e&&this.suggestValue(a,b[e])},this),this.resolve()},resolvePair:function(a,b){this.suggestValue(this._editVarList[0].v,a),this.suggestValue(this._editVarList[1].v,b),this.resolve()},resolve:function(){a.trace&&a.fnenterprint(\"resolve()\"),this.dualOptimize(),this._setExternalVariables(),this._infeasibleRows.clear(),this._resetStayConstants()},suggestValue:function(b,c){a.trace&&console.log(\"suggestValue(\"+b+\", \"+c+\")\");var d=this._editVarMap.get(b);if(!d)throw new a.Error(\"suggestValue for variable \"+b+\", but var is not an edit variable\");var e=c-d.prevEditConstant;return d.prevEditConstant=c,this.deltaEditConstant(e,d.editPlus,d.editMinus),this},solve:function(){return this._fNeedsSolving&&(this.optimize(this._objective),this._setExternalVariables()),this},setEditedValue:function(b,c){if(!this.columnsHasKey(b)&&null==this.rows.get(b))return b.value=c,this;if(!a.approx(c,b.value)){this.addEditVar(b),this.beginEdit();try{this.suggestValue(b,c)}catch(d){throw new a.InternalError(\"Error in setEditedValue\")}this.endEdit()}return this},addVar:function(b){if(!this.columnsHasKey(b)&&null==this.rows.get(b)){try{this.addStay(b)}catch(c){throw new a.InternalError(\"Error in addVar -- required failure is impossible\")}a.trace&&a.traceprint(\"added initial stay on \"+b)}return this},getInternalInfo:function(){var a=c.getInternalInfo.call(this);return a+=\"\\nSolver info:\\n\",a+=\"Stay Error Variables: \",a+=this._stayPlusErrorVars.length+this._stayMinusErrorVars.length,a+=\" (\"+this._stayPlusErrorVars.length+\" +, \",a+=this._stayMinusErrorVars.length+\" -)\\n\",a+=\"Edit Variables: \"+this._editVarMap.size,a+=\"\\n\"},getDebugInfo:function(){return\"\"+this+this.getInternalInfo()+\"\\n\"},toString:function(){var a=c.getInternalInfo.call(this);return a+=\"\\n_stayPlusErrorVars: \",a+=\"[\"+this._stayPlusErrorVars+\"]\",a+=\"\\n_stayMinusErrorVars: \",a+=\"[\"+this._stayMinusErrorVars+\"]\",a+=\"\\n\",a+=\"_editVarMap:\\n\"+this._editVarMap,a+=\"\\n\"},getConstraintMap:function(){return this._markerVars},addWithArtificialVariable:function(b){a.trace&&a.fnenterprint(\"addWithArtificialVariable: \"+b);var c=new a.SlackVariable({value:++this._artificialCounter,prefix:\"a\"}),d=new a.ObjectiveVariable({name:\"az\"}),e=b.clone();a.trace&&a.traceprint(\"before addRows:\\n\"+this),this.addRow(d,e),this.addRow(c,b),a.trace&&a.traceprint(\"after addRows:\\n\"+this),this.optimize(d);var f=this.rows.get(d);if(a.trace&&a.traceprint(\"azTableauRow.constant == \"+f.constant),!a.approx(f.constant,0))throw this.removeRow(d),this.removeColumn(c),new a.RequiredFailure;var g=this.rows.get(c);if(null!=g){if(g.isConstant)return this.removeRow(c),this.removeRow(d),void 0;var h=g.anyPivotableVariable();this.pivot(h,c)}a.assert(null==this.rows.get(c),\"rowExpression(av) == null\"),this.removeColumn(c),this.removeRow(d)},tryAddingDirectly:function(b){a.trace&&a.fnenterprint(\"tryAddingDirectly: \"+b);var c=this.chooseSubject(b);return null==c?(a.trace&&a.fnexitprint(\"returning false\"),!1):(b.newSubject(c),this.columnsHasKey(c)&&this.substituteOut(c,b),this.addRow(c,b),a.trace&&a.fnexitprint(\"returning true\"),!0)},chooseSubject:function(b){a.trace&&a.fnenterprint(\"chooseSubject: \"+b);var c=null,d=!1,e=!1,f=b.terms,g=f.escapingEach(function(a,b){if(d){if(!a.isRestricted&&!this.columnsHasKey(a))return{retval:a}}else if(a.isRestricted){if(!e&&!a.isDummy&&0>b){var f=this.columns.get(a);(null==f||1==f.size&&this.columnsHasKey(this._objective))&&(c=a,e=!0)}}else c=a,d=!0},this);if(g&&void 0!==g.retval)return g.retval;if(null!=c)return c;var h=0,g=f.escapingEach(function(a,b){return a.isDummy?(this.columnsHasKey(a)||(c=a,h=b),void 0):{retval:null}},this);if(g&&void 0!==g.retval)return g.retval;if(!a.approx(b.constant,0))throw new a.RequiredFailure;return h>0&&b.multiplyMe(-1),c},deltaEditConstant:function(b,c,d){a.trace&&a.fnenterprint(\"deltaEditConstant :\"+b+\", \"+c+\", \"+d);var e=this.rows.get(c);if(null!=e)return e.constant+=b,0>e.constant&&this._infeasibleRows.add(c),void 0;var f=this.rows.get(d);if(null!=f)return f.constant+=-b,0>f.constant&&this._infeasibleRows.add(d),void 0;var g=this.columns.get(d);g||console.log(\"columnVars is null -- tableau is:\\n\"+this),g.each(function(a){var c=this.rows.get(a),e=c.coefficientFor(d);c.constant+=e*b,a.isRestricted&&0>c.constant&&this._infeasibleRows.add(a)},this)},dualOptimize:function(){a.trace&&a.fnenterprint(\"dualOptimize:\");for(var b=this.rows.get(this._objective);this._infeasibleRows.size;){var c=this._infeasibleRows.values()[0];this._infeasibleRows.delete(c);var d=null,e=this.rows.get(c);if(e&&0>e.constant){var g,f=Number.MAX_VALUE,h=e.terms;if(h.each(function(c,e){if(e>0&&c.isPivotable){var h=b.coefficientFor(c);g=h/e,(f>g||a.approx(g,f)&&c.hashCode<d.hashCode)&&(d=c,f=g)}}),f==Number.MAX_VALUE)throw new a.InternalError(\"ratio == nil (MAX_VALUE) in dualOptimize\");this.pivot(d,c)}}},newExpression:function(b,c,d){a.trace&&(a.fnenterprint(\"newExpression: \"+b),a.traceprint(\"cn.isInequality == \"+b.isInequality),a.traceprint(\"cn.required == \"+b.required));var e=b.expression,f=new a.Expression(e.constant),g=new a.SlackVariable,h=new a.DummyVariable,i=new a.SlackVariable,j=new a.SlackVariable,k=e.terms;if(k.each(function(a,b){var c=this.rows.get(a);c?f.addExpression(c,b):f.addVariable(a,b)},this),b.isInequality){if(a.trace&&a.traceprint(\"Inequality, adding slack\"),++this._slackCounter,g=new a.SlackVariable({value:this._slackCounter,prefix:\"s\"}),f.setVariable(g,-1),this._markerVars.set(b,g),!b.required){++this._slackCounter,i=new a.SlackVariable({value:this._slackCounter,prefix:\"em\"}),f.setVariable(i,1);\nvar l=this.rows.get(this._objective);l.setVariable(i,b.strength.symbolicWeight.value*b.weight),this.insertErrorVar(b,i),this.noteAddedVariable(i,this._objective)}}else if(b.required)a.trace&&a.traceprint(\"Equality, required\"),++this._dummyCounter,h=new a.DummyVariable({value:this._dummyCounter,prefix:\"d\"}),f.setVariable(h,1),this._markerVars.set(b,h),a.trace&&a.traceprint(\"Adding dummyVar == d\"+this._dummyCounter);else{a.trace&&a.traceprint(\"Equality, not required\"),++this._slackCounter,j=new a.SlackVariable({value:this._slackCounter,prefix:\"ep\"}),i=new a.SlackVariable({value:this._slackCounter,prefix:\"em\"}),f.setVariable(j,-1),f.setVariable(i,1),this._markerVars.set(b,j);var l=this.rows.get(this._objective);a.trace&&console.log(l);var m=b.strength.symbolicWeight.value*b.weight;0==m&&(a.trace&&a.traceprint(\"cn == \"+b),a.trace&&a.traceprint(\"adding \"+j+\" and \"+i+\" with swCoeff == \"+m)),l.setVariable(j,m),this.noteAddedVariable(j,this._objective),l.setVariable(i,m),this.noteAddedVariable(i,this._objective),this.insertErrorVar(b,i),this.insertErrorVar(b,j),b.isStayConstraint?(this._stayPlusErrorVars.push(j),this._stayMinusErrorVars.push(i)):b.isEditConstraint&&(c[0]=j,c[1]=i,d[0]=e.constant)}return 0>f.constant&&f.multiplyMe(-1),a.trace&&a.fnexitprint(\"returning \"+f),f},optimize:function(b){a.trace&&a.fnenterprint(\"optimize: \"+b),a.trace&&a.traceprint(\"\"+this),this._optimizeCount++;var c=this.rows.get(b);a.assert(null!=c,\"zRow != null\");for(var g,h,e=null,f=null;;){if(g=0,h=c.terms,h.escapingEach(function(a,b){return a.isPivotable&&g>b?(g=b,e=a,{brk:1}):void 0},this),g>=-d)return;a.trace&&console.log(\"entryVar:\",e,\"objectiveCoeff:\",g);var i=Number.MAX_VALUE,j=this.columns.get(e),k=0;if(j.each(function(b){if(a.trace&&a.traceprint(\"Checking \"+b),b.isPivotable){var c=this.rows.get(b),d=c.coefficientFor(e);a.trace&&a.traceprint(\"pivotable, coeff = 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diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..b7d9d75
--- /dev/null
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+    "webpack-log": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
+      "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
+      "dev": true,
+      "requires": {
+        "ansi-colors": "^3.0.0",
+        "uuid": "^3.3.2"
+      }
+    },
+    "webpack-sources": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
+      "integrity": "sha512-OiVgSrbGu7NEnEvQJJgdSFPl2qWKkWq5lHMhgiToIiN9w34EBnjYzSYs+VbL5KoYiLNtFFa7BZIKxRED3I32pA==",
+      "dev": true,
+      "requires": {
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
+    "which": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
+    },
+    "which-module": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+      "dev": true
+    },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
+    "window-size": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
+      "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
+      "dev": true
+    },
+    "wordwrap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
+    },
+    "worker-farm": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
+      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
+      "dev": true,
+      "requires": {
+        "errno": "~0.1.7"
+      }
+    },
+    "wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "dev": true,
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        }
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    },
+    "write": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      }
+    },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
+    },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
+    "yallist": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
+      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+      "dev": true
+    },
+    "yargs": {
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+      "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
+      "dev": true,
+      "requires": {
+        "camelcase": "^1.0.2",
+        "cliui": "^2.1.0",
+        "decamelize": "^1.0.0",
+        "window-size": "0.1.0"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-1.2.1.tgz",
+          "integrity": "sha1-m7UwTS4LVmmLLHWLCKPqqdqlijk=",
+          "dev": true
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      },
+      "dependencies": {
+        "cliui": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+          "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
+          "dev": true,
+          "requires": {
+            "string-width": "^2.1.1",
+            "strip-ansi": "^4.0.0",
+            "wrap-ansi": "^2.0.0"
+          }
+        },
+        "yargs": {
+          "version": "12.0.5",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+          "dev": true,
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^3.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^11.1.1"
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
index b581316..5c55887 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
     "url": "git://github.com/IjzerenHein/autolayout.js.git"
   },
   "main": "dist/autolayout.js",
+  "types": "dist/autolayout.d.ts",
   "author": {
     "name": "Hein Rutjes <hrutjes@gmail.com>"
   },
@@ -37,33 +38,31 @@
     "LICENSE"
   ],
   "devDependencies": {
-    "babel-eslint": "^7.1.1",
-    "babel-preset-es2015": "^6.18.0",
-    "babelify": "^7.3.0",
     "benchmark": "^2.1.3",
     "browserify": "^13.3.0",
     "chai": "^3.5.0",
     "combined-stream": "^1.0.5",
-    "envify": "^4.0.0",
-    "esperanto": "^0.7.5",
-    "grunt": "^1.0.1",
-    "grunt-contrib-concat": "^1.0.1",
-    "grunt-eslint": "^19.0.0",
-    "grunt-exec": "^1.0.1",
-    "grunt-jscs": "^3.0.1",
-    "grunt-jsdoc-to-markdown": "^2.0.0",
-    "grunt-peg": "1.5.0",
-    "kiwi.js": "^1.0.1",
+    "copy-webpack-plugin": "^5.0.0",
+    "eslint": "^5.14.1",
     "lodash": "^4.17.4",
     "minifyify": "^7.3.4",
     "minimist": "^1.2.0",
-    "mocha": "^3.2.0",
-    "platform": "^1.3.1"
+    "mocha": "^6.0.0",
+    "platform": "^1.3.1",
+    "webpack": "^4.29.5",
+    "webpack-cli": "^3.2.3",
+    "webpack-conditional-loader": "^1.0.12"
   },
   "dependencies": {
-    "cassowary": "0.0.2"
+    "cassowary": "0.0.2",
+    "kiwi.js": "^1.1.0"
   },
   "scripts": {
-    "test": "mocha"
+    "test": "mocha",
+    "build-dev-kiwi": "npx webpack --mode development",
+    "build-prod-kiwi": "npx webpack --mode production",
+    "build-dev-cassowary": "npx webpack --mode development --env.CASSOWARYJS",
+    "build-prod-cassowary": "npx webpack --mode production --env.CASSOWARYJS",
+    "release": "npm run build-prod-kiwi && npm run build-prod-cassowary"
   }
 }
diff --git a/src/AutoLayout.js b/src/AutoLayout.js
index 9315413..0543c9f 100644
--- a/src/AutoLayout.js
+++ b/src/AutoLayout.js
@@ -1,30 +1,7 @@
-import Attribute from './Attribute';
-import Relation from './Relation';
-import Priority from './Priority';
-import VisualFormat from './VisualFormat';
-import View from './View';
-import SubView from './SubView';
+export {default as Attribute} from './Attribute';
+export {default as Relation} from './Relation';
+export {default as Priority} from './Priority';
+export {default as VisualFormat} from './VisualFormat';
+export {default as View} from './View';
+export {default as SubView} from './SubView';
 //import DOM from './DOM';
-
-/**
- * AutoLayout.
- *
- * @namespace AutoLayout
- * @property {Attribute} Attribute
- * @property {Relation} Relation
- * @property {Priority} Priority
- * @property {VisualFormat} VisualFormat
- * @property {View} View
- * @property {SubView} SubView
- */
-var AutoLayout = {
-    Attribute: Attribute,
-    Relation: Relation,
-    Priority: Priority,
-    VisualFormat: VisualFormat,
-    View: View,
-    SubView: SubView
-    //DOM: DOM
-};
-
-export default AutoLayout;
diff --git a/src/SubView.js b/src/SubView.js
index fe5ed7d..b752266 100644
--- a/src/SubView.js
+++ b/src/SubView.js
@@ -1,5 +1,10 @@
-import c from 'cassowary/bin/c';
-//import kiwi from 'kiwi.js';
+// #if process.env.CASSOWARYJS
+    import c from 'cassowary/bin/c';
+// #endif
+
+// #if !process.env.CASSOWARYJS
+    import * as kiwi from 'kiwi.js';
+// #endif
 import Attribute from './Attribute';
 
 /**
@@ -14,22 +19,23 @@ class SubView {
         this._solver = options.solver;
         this._attr = {};
         if (!options.name) {
-            if (process.env.CASSOWARYJS) {
+            // #if process.env.CASSOWARYJS
                 this._attr[Attribute.LEFT] = new c.Variable();
                 this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.LEFT], c.Strength.required));
                 this._attr[Attribute.TOP] = new c.Variable();
                 this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.TOP], c.Strength.required));
                 this._attr[Attribute.ZINDEX] = new c.Variable();
                 this._solver.addConstraint(new c.StayConstraint(this._attr[Attribute.ZINDEX], c.Strength.required));
-            }
-            else {
+            // #endif
+
+            // #if !process.env.CASSOWARYJS
                 this._attr[Attribute.LEFT] = new kiwi.Variable();
                 this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.LEFT], kiwi.Operator.Eq, 0));
                 this._attr[Attribute.TOP] = new kiwi.Variable();
                 this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.TOP], kiwi.Operator.Eq, 0));
                 this._attr[Attribute.ZINDEX] = new kiwi.Variable();
                 this._solver.addConstraint(new kiwi.Constraint(this._attr[Attribute.ZINDEX], kiwi.Operator.Eq, 0));
-            }
+            // #endif
         }
     }
     toJSON() {
@@ -110,21 +116,23 @@ class SubView {
         if ((value !== undefined) && (value !== this._intrinsicWidth)) {
             const attr = this._getAttr(Attribute.WIDTH);
             if (this._intrinsicWidth === undefined) {
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-                }
+                // #endif
             }
             this._intrinsicWidth = value;
             this._solver.suggestValue(attr, value);
-            if (process.env.CASSOWARYJS) {
+            // #if process.env.CASSOWARYJS
                 this._solver.resolve();
-            }
-            else {
+            // #endif
+
+            // #if !process.env.CASSOWARYJS
                 this._solver.updateVariables();
-            }
+            // #endif
         }
     }
 
@@ -142,21 +150,24 @@ class SubView {
         if ((value !== undefined) && (value !== this._intrinsicHeight)) {
             const attr = this._getAttr(Attribute.HEIGHT);
             if (this._intrinsicHeight === undefined) {
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addEditVar(attr, new c.Strength('required', this._name ? 998 : 999, 1000, 1000));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addEditVariable(attr, kiwi.Strength.create(this._name ? 998 : 999, 1000, 1000));
-                }
+                // #endif
             }
             this._intrinsicHeight = value;
             this._solver.suggestValue(attr, value);
-            if (process.env.CASSOWARYJS) {
+
+            // #if process.env.CASSOWARYJS
                 this._solver.resolve();
-            }
-            else {
+            // #endif
+
+            // #if !process.env.CASSOWARYJS
                 this._solver.updateVariables();
-            }
+            // #endif
         }
     }
 
@@ -231,52 +242,64 @@ class SubView {
         if (this._attr[attr]) {
             return this._attr[attr];
         }
-        this._attr[attr] = process.env.CASSOWARYJS ? new c.Variable() : new kiwi.Variable();
+        // #if process.env.CASSOWARYJS
+            this._attr[attr] = new c.Variable();
+        // #endif
+
+        // #if !process.env.CASSOWARYJS
+            this._attr[attr] = new kiwi.Variable();
+        // #endif
+
         switch (attr) {
             case Attribute.RIGHT:
                 this._getAttr(Attribute.LEFT);
                 this._getAttr(Attribute.WIDTH);
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], this._attr[Attribute.WIDTH])));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH])));
-                }
+                // #endif
                 break;
             case Attribute.BOTTOM:
                 this._getAttr(Attribute.TOP);
                 this._getAttr(Attribute.HEIGHT);
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], this._attr[Attribute.HEIGHT])));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT])));
-                }
+                // #endif
                 break;
             case Attribute.CENTERX:
                 this._getAttr(Attribute.LEFT);
                 this._getAttr(Attribute.WIDTH);
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.LEFT], c.divide(this._attr[Attribute.WIDTH], 2))));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.LEFT].plus(this._attr[Attribute.WIDTH].divide(2))));
-                }
+                // #endif
                 break;
             case Attribute.CENTERY:
                 this._getAttr(Attribute.TOP);
                 this._getAttr(Attribute.HEIGHT);
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.addConstraint(new c.Equation(this._attr[attr], c.plus(this._attr[Attribute.TOP], c.divide(this._attr[Attribute.HEIGHT], 2))));
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.addConstraint(new kiwi.Constraint(this._attr[attr], kiwi.Operator.Eq, this._attr[Attribute.TOP].plus(this._attr[Attribute.HEIGHT].divide(2))));
-                }
+                // #endif
                 break;
         }
-        if (!process.env.CASSOWARYJS) {
+        // #if !process.env.CASSOWARYJS
             this._solver.updateVariables();
-        }
+        // #endif
+
         return this._attr[attr];
     }
 
@@ -284,12 +307,16 @@ class SubView {
      * @private
      */
     _getAttrValue(attr) {
-        if (process.env.CASSOWARYJS) {
-            return this._getAttr(attr).value;
-        }
-        else {
-            return this._getAttr(attr).value();
-        }
+        let value;
+        // #if process.env.CASSOWARYJS
+            value = this._getAttr(attr).value;
+        // #endif
+
+        // #if !process.env.CASSOWARYJS
+            value = this._getAttr(attr).value();
+        // #endif
+
+        return value;
     }
 }
 
diff --git a/src/View.js b/src/View.js
index 30e0d00..693298d 100644
--- a/src/View.js
+++ b/src/View.js
@@ -1,22 +1,35 @@
-import c from 'cassowary/bin/c';
-//import kiwi from 'kiwi.js';
+// #if process.env.CASSOWARYJS
+    import c from 'cassowary/bin/c';
+// #endif
+
+// #if !process.env.CASSOWARYJS
+    import * as kiwi from 'kiwi.js';
+// #endif
 import Attribute from './Attribute';
 import Relation from './Relation';
 import SubView from './SubView';
 
-const defaultPriorityStrength = process.env.CASSOWARYJS ? new c.Strength('defaultPriority', 0, 1000, 1000) : kiwi.Strength.create(0, 1000, 1000);
+let defaultPriorityStrength;
+// #if process.env.CASSOWARYJS
+    defaultPriorityStrength =  new c.Strength('defaultPriority', 0, 1000, 1000);
+// #endif
+// #if !process.env.CASSOWARYJS
+    defaultPriorityStrength = kiwi.Strength.create(0, 1000, 1000);
+// #endif
 
 function _getConst(name, value) {
-    if (process.env.CASSOWARYJS) {
-        const vr = new c.Variable({value: value});
+    let vr;
+    // #if process.env.CASSOWARYJS
+        vr = new c.Variable({value: value});
         this._solver.addConstraint(new c.StayConstraint(vr, c.Strength.required, 0));
-        return vr;
-    }
-    else {
-        const vr = new kiwi.Variable();
+    // #endif
+
+    // #if !process.env.CASSOWARYJS
+        vr = new kiwi.Variable();
         this._solver.addConstraint(new kiwi.Constraint(vr, kiwi.Operator.Eq, value));
-        return vr;
-    }
+    // #endif
+
+    return vr;
 }
 
 function _getSubView(viewName) {
@@ -73,16 +86,17 @@ function _getSpacing(constraint) {
     this._spacingVars = this._spacingVars || new Array(7);
     this._spacingExpr = this._spacingExpr || new Array(7);
     if (!this._spacingVars[index]) {
-        if (process.env.CASSOWARYJS) {
+        // #if process.env.CASSOWARYJS
             this._spacingVars[index] = new c.Variable();
             this._solver.addEditVar(this._spacingVars[index]);
             this._spacingExpr[index] = c.minus(0, this._spacingVars[index]);
-        }
-        else {
+        // #endif
+
+        // #if !process.env.CASSOWARYJS
             this._spacingVars[index] = new kiwi.Variable();
             this._solver.addEditVariable(this._spacingVars[index], kiwi.Strength.create(999, 1000, 1000));
             this._spacingExpr[index] = this._spacingVars[index].multiply(-1);
-        }
+        // #endif
         this._solver.suggestValue(this._spacingVars[index], this._spacing[index]);
     }
     return this._spacingExpr[index];
@@ -97,8 +111,8 @@ function _addConstraint(constraint) {
         constant = _getSpacing.call(this, constraint);
     }
     const attr1 = _getSubView.call(this, constraint.view1)._getAttr(constraint.attr1);
-    let attr2;
-    if (process.env.CASSOWARYJS) {
+    let attr2, strength;
+    // #if process.env.CASSOWARYJS
         if (constraint.attr2 === Attribute.CONST) {
             attr2 = _getConst.call(this, undefined, constraint.constant);
         }
@@ -114,7 +128,7 @@ function _addConstraint(constraint) {
                 attr2 = c.times(attr2, multiplier);
             }
         }
-        const strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? new c.Strength('priority', 0, constraint.priority, 1000) : defaultPriorityStrength;
+        strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? new c.Strength('priority', 0, constraint.priority, 1000) : defaultPriorityStrength;
         switch (constraint.relation) {
             case Relation.EQU:
                 relation = new c.Equation(attr1, attr2, strength);
@@ -128,8 +142,9 @@ function _addConstraint(constraint) {
             default:
                 throw 'Invalid relation specified: ' + constraint.relation;
         }
-    }
-    else {
+    // #endif
+
+    // #if !process.env.CASSOWARYJS
         if (constraint.attr2 === Attribute.CONST) {
             attr2 = _getConst.call(this, undefined, constraint.constant);
         }
@@ -145,7 +160,7 @@ function _addConstraint(constraint) {
                 attr2 = attr2.multiply(multiplier);
             }
         }
-        const strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? kiwi.Strength.create(0, constraint.priority, 1000) : defaultPriorityStrength;
+        strength = ((constraint.priority !== undefined) && (constraint.priority < 1000)) ? kiwi.Strength.create(0, constraint.priority, 1000) : defaultPriorityStrength;
         switch (constraint.relation) {
             case Relation.EQU:
                 relation = new kiwi.Constraint(attr1, kiwi.Operator.Eq, attr2, strength);
@@ -159,7 +174,7 @@ function _addConstraint(constraint) {
             default:
                 throw 'Invalid relation specified: ' + constraint.relation;
         }
-    }
+    // #endif
     this._solver.addConstraint(relation);
 }
 
@@ -208,7 +223,14 @@ class View {
      * @param {Array} [options.constraints] One or more constraint definitions (see `addConstraints`).
      */
     constructor(options) {
-        this._solver = process.env.CASSOWARYJS ? new c.SimplexSolver() : new kiwi.Solver();
+        // #if process.env.CASSOWARYJS
+            this._solver = new c.SimplexSolver();
+        // #endif
+
+        // #if !process.env.CASSOWARYJS
+            this._solver = new kiwi.Solver();
+        // #endif
+
         this._subViews = {};
         //this._spacing = undefined;
         this._parentSubView = new SubView({
@@ -344,12 +366,13 @@ class View {
                         this._solver.suggestValue(this._spacingVars[i], this._spacing[i]);
                     }
                 }
-                if (process.env.CASSOWARYJS) {
+                // #if process.env.CASSOWARYJS
                     this._solver.resolve();
-                }
-                else {
+                // #endif
+
+                // #if !process.env.CASSOWARYJS
                     this._solver.updateVariables();
-                }
+                // #endif
             }
         }
         return this;
@@ -377,9 +400,9 @@ class View {
      */
     addConstraint(constraint) {
         _addConstraint.call(this, constraint);
-        if (!process.env.CASSOWARYJS) {
+        // #if !process.env.CASSOWARYJS
             this._solver.updateVariables();
-        }
+        // #endif
         return this;
     }
 
@@ -407,9 +430,9 @@ class View {
         for (var j = 0; j < constraints.length; j++) {
             _addConstraint.call(this, constraints[j]);
         }
-        if (!process.env.CASSOWARYJS) {
+        // #if !process.env.CASSOWARYJS
             this._solver.updateVariables();
-        }
+        // #endif
         return this;
     }
 
diff --git a/src/autolayout.d.ts b/src/autolayout.d.ts
new file mode 100644
index 0000000..8d1648a
--- /dev/null
+++ b/src/autolayout.d.ts
@@ -0,0 +1,295 @@
+
+declare module 'autolayout'
+{
+    /**
+     * [top, right, bottom, left, width, height, zIndex] Full syntax including z-index (clockwise order).
+     * [top, right, bottom, left, width, height] Full horizontal & vertical spacing syntax (no z-index) (clockwise order).
+     * [horizontal, vertical, zIndex] Horizontal = left, right, width, vertical = top, bottom, height.
+     * [horizontal, vertical] 	Array(2) Horizontal = left, right, width, vertical = top, bottom, height, z-index = 1.
+     * spacing Number Horizontal & vertical spacing are all the same, z-index = 1.
+     */
+    type Spacing = number | [number,number] | [number,number,number] | [number,number,number,number,number,number] | [number,number,number,number,number,number,number];
+
+    /**
+     * Layout attributes.
+     */
+    enum Attribute
+    {
+        CONST,
+        NOTANATTRIBUTE,
+        VARIABLE,
+        LEFT,
+        RIGHT,
+        TOP,
+        BOTTOM,
+        WIDTH,
+        HEIGHT,
+        CENTERX,
+        CENTERY,
+        ZINDEX,
+    }
+
+    /**
+     * Relation types.
+     */
+    enum Relation
+    {
+        LEQ,
+        EQU,
+        GEQ
+    }
+
+    /**
+     * Layout priorities.
+     */
+    enum Priority
+    {
+        REQUIRED,
+        DEFAULTHIGH ,
+        DEFAULTLOW
+    }
+
+    type ConstraintDef = {
+        view1: {String},
+        attr1: Attribute,
+        relation: Relation,
+        view2: string,
+        attr2: Attribute,
+        multiplier: number,
+        constant: number,
+        priority: number
+    };
+
+    class View
+    {
+        /** @private */
+        _solver:any;
+
+        /**
+         * @param options Configuration options.
+         * @param options.width Initial width of the view.
+         * @param options.height Initial height of the view.
+         * @param options.spacing Spacing for the view (default: 8).
+         * @param options.constraints One or more constraint definitions.
+         * @see setSpacing
+         * @see addConstraints
+         */
+        constructor(options?:{width?:number, height?:number, spacing?:Spacing, constraints?:Array<ConstraintDef>});
+
+        /**
+         * Width that was set using setSize.
+         */
+        readonly width : number;
+
+        /**
+         * Height that was set using setSize.
+         */
+        readonly height: number;
+
+        /**
+         * Width that is calculated from the constraints and the .intrinsicWidth of the sub-views.
+         *  When the width has been explicitely set using setSize, the fittingWidth will always be the same as the explicitely set width. To calculate the size based on the content, use:
+         * ```js
+         * var view = new AutoLayout.View({
+         * constraints: VisualFormat.parse('|-[view1]-[view2]-'),
+         * spacing: 20
+         * });
+         * view.subViews.view1.intrinsicWidth = 100;
+         * view.subViews.view2.intrinsicWidth = 100;
+         * console.log('fittingWidth: ' + view.fittingWidth); // 260
+         * ```
+         */
+        readonly fittingWidth:number;
+
+        /**
+         * Height that is calculated from the constraints and the .intrinsicHeight of the sub-views.
+         * @see fittingWidth.
+         */
+        readonly fittingHeight:number;
+
+        /**
+         * Dictionary of SubView objects that have been created when adding constraints.
+         */
+        readonly subViews: {[k:string]:SubView};
+
+        /**
+         * Sets the width and height of the view.
+         * @param width
+         * @param height
+         * @returns this
+         */
+        setSize(width:number, height:number):View;
+
+        /**
+         * Sets the spacing for the view.
+         * The spacing can be set for 7 different variables: top, right, bottom, left, width, height and zIndex.
+         * The left-spacing is used when a spacer is used between the parent-view and a sub-view (e.g. |-[subView]).
+         * The same is true for the right, top and bottom spacers.
+         * The width and height are used for spacers in between sub-views (e.g. [view1]-[view2]).
+         * Examples:
+         * ```js
+         * view.setSpacing(10); // horizontal & vertical spacing 10
+         * view.setSpacing([10, 15, 2]); // horizontal spacing 10, vertical spacing 15, z-axis spacing 2
+         * view.setSpacing([10, 20, 10, 20, 5, 5]); // top, right, bottom, left, horizontal, vertical
+         * view.setSpacing([10, 20, 10, 20, 5, 5, 1]); // top, right, bottom, left, horizontal, vertical, z
+         * ```
+         * @param spacing
+         * @returns this
+         */
+        setSpacing(spacing: Spacing):View;
+
+        /**
+         * Adds a constraint definition.
+         * @param constraint
+         * @returns this
+         */
+        addConstraint(constraint: ConstraintDef) : View;
+
+        /**
+         * Adds one or more constraint definitions.
+         * @param constraints
+         * @returns this
+         */
+        addConstraints(constraints: ReadonlyArray<ConstraintDef>) : View;
+    }
+
+    /**
+     * A SubView is automatically generated when constraints are added to a View.
+     */
+    class SubView
+    {
+        /** @private */
+        _solver:any;
+
+        /** @private */
+        _getAttr(attr:string) : Attribute;
+
+        /**
+         * Name of the sub-view.
+         */
+        readonly name : string;
+
+        /**
+         * Left value (Attribute.LEFT).
+         */
+        readonly left : number;
+
+        /**
+         * Right value (Attribute.RIGHT).
+         */
+        readonly right : number;
+
+        /**
+         * Width value (Attribute.WIDTH).
+         */
+        readonly width : number;
+
+        /**
+         * Height value (Attribute.HEIGHT).
+         */
+        readonly height : number;
+
+        /**
+         * Intrinsic width of the sub-view.
+         * Use this property to explicitely set the width of the sub-view, e.g.:
+         * ```js
+         * let view = new AutoLayout.View(AutoLayout.VisualFormat.parse('|[child1][child2]|'), {
+         *     width: 500
+         * });
+         * view.subViews.child1.intrinsicWidth = 100;
+         * console.log('child2 width: ' + view.subViews.child2.width); // 400
+         * ```
+         * */
+        intrinsicWidth : number;
+
+        /**
+         * Intrinsic height of the sub-view.
+         * @see intrinsicWidth.
+         */
+        intrinsicHeight : number;
+
+        /**
+         * Top value (Attribute.TOP).
+         */
+        readonly top : number;
+
+        /**
+         * Bottom value (Attribute.BOTTOM).
+         */
+        readonly bottom : number;
+
+        /**
+         * Horizontal center (Attribute.CENTERX).
+         */
+        readonly centerX : number;
+
+        /**
+         * Vertical center (Attribute.CENTERY).
+         */
+        readonly centerY : number;
+
+        /**
+         * Z-index (Attribute.ZINDEX).
+         */
+        readonly zIndex : number;
+
+        /**
+         * Returns the type of the sub-view.
+         */
+        readonly type : string;
+
+        /**
+         * Gets the value of one of the attributes.
+         * @param attr Attribute name (e.g. 'right', 'centerY', Attribute.TOP).
+         */
+        getValue(attr: string | Attribute): number;
+    }
+
+    module VisualFormat
+    {
+        /**
+         * Parses a single line of vfl into an array of constraint definitions.
+         * When the visual-format could not be succesfully parsed an exception is thrown containing additional info about the parse error and column position.
+         * @param visualFormat 	Visual format string (cannot contain line-endings!).
+         * @param options Configuration options.
+         * @param options.extended When set to true uses the extended syntax (default: false).
+         * @param options.outFormat Output format (constraints or raw) (default: constraints).
+         * @param options.lineIndex Line-index used when auto generating equal-spacing constraints.
+         * @returns Array of constraint definitions.
+         */
+        function parseLine(visualFormat: string | Array<string>, options?:{extended?:boolean, outFormat?:'constraints'|'raw', lineIndex?:number}): Array<ConstraintDef>;
+
+        /**
+         * Parses one or more visual format strings into an array of constraint definitions.
+         * When the visual-format could not be succesfully parsed an exception is thrown containing additional info about the parse error and column position.
+         * @param visualFormat One or more visual format strings.
+         * @param options Object Configuration options.
+         * @param options.extended When set to true uses the extended syntax (default: false).
+         * @param options.strict When set to false trims any leading/trailing spaces and ignores empty lines (default: true).
+         * @param options.lineSeparator String that defines the end of a line (default \n).
+         * @param options.outFormat Output format (constraints or raw) (default: constraints).
+         * @returns  Array of constraint definitions.
+         */
+        function parse(visualFormat: string | Array<string>, options?:{extended?: boolean, strict?:boolean, lineSeparator?:string, outFormat?: 'constraints'|'raw'}): Array<ConstraintDef>;
+
+        /**
+         * Parses meta information from the comments in the VFL.
+         * Additional meta information can be specified in the comments for previewing and rendering purposes. For instance, the view-port aspect-ratio, sub-view widths and colors, can be specified. The following example renders three colored circles in the visual-format editor:
+         * ```js
+         * //viewport aspect-ratio:3/1 max-height:300
+         * //colors red:#FF0000 green:#00FF00 blue:#0000FF
+         * //shapes red:circle green:circle blue:circle
+         * H:|-[row:[red(green,blue)]-[green]-[blue]]-|
+         * V:|[row]|
+         * ```
+         * @param visualFormat 	String | Array 	One or more visual format strings.
+         * @param options Configuration options.
+         * @param options.lineSeparator String that defines the end of a line (default \n).
+         * @param options.prefix When specified, also processes the categories using that prefix (e.g. "-dev-viewport max-height:10").
+         * @returns  meta-info
+         */
+        function parseMetaInfo(visualFormat: string | Array<string>, options?: {lineSparator?: string, prefix?: string}): Object;
+    }
+
+}
+
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 0000000..cfe4361
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,30 @@
+const path = require('path');
+const CopyWebpackPlugin = require('copy-webpack-plugin');
+
+module.exports = (env,{mode})=> {
+
+    process.env.CASSOWARYJS = env ? env.CASSOWARYJS : '';
+    const postfix = (env && env.CASSOWARYJS) ? '.cassowary' : '';
+
+    return {
+        entry: './src/AutoLayout.js',
+        output: {
+            path: path.resolve(__dirname, 'dist'),
+            filename: `autolayout${postfix}.js`,
+            libraryTarget:'umd',
+            library: 'autolayout',
+            globalObject: 'this'
+        },
+        devtool:'source-map',
+        module:{
+            rules: [{
+                test: /\.js$/,
+                use: ['webpack-conditional-loader']
+            }]
+        },
+        plugins: [
+            new CopyWebpackPlugin([
+                {from:'./src/autolayout.d.ts', to:'./'},
+            ])]
+    }
+};