forked from company-mode/company-mode
-
Notifications
You must be signed in to change notification settings - Fork 0
/
company-nxml.el
142 lines (121 loc) · 5.59 KB
/
company-nxml.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
;;; company-nxml.el --- company-mode completion backend for nxml-mode -*- lexical-binding: t -*-
;; Copyright (C) 2009-2011, 2013-2015, 2017-2018, 2023 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; In Emacs >= 26, company-capf is used instead.
;;; Code:
(require 'company)
(require 'cl-lib)
(defvar rng-open-elements)
(defvar rng-validate-mode)
(defvar rng-in-attribute-regex)
(defvar rng-in-attribute-value-regex)
(declare-function rng-set-state-after "rng-nxml")
(declare-function rng-match-possible-start-tag-names "rng-match")
(declare-function rng-adjust-state-for-attribute "rng-nxml")
(declare-function rng-match-possible-attribute-names "rng-match")
(declare-function rng-adjust-state-for-attribute-value "rng-nxml")
(declare-function rng-match-possible-value-strings "rng-match")
(defconst company-nxml-token-regexp
"\\(?:[_[:alpha:]][-._[:alnum:]]*\\_>\\)")
(defvar company-nxml-in-attribute-value-regexp
(replace-regexp-in-string "w" company-nxml-token-regexp
"<w\\(?::w\\)?\
\\(?:[ \t\r\n]+w\\(?::w\\)?[ \t\r\n]*=\
\[ \t\r\n]*\\(?:\"[^\"]*\"\\|'[^']*'\\)\\)*\
\[ \t\r\n]+\\(w\\(:w\\)?\\)[ \t\r\n]*=[ \t\r\n]*\
\\(\"\\([^\"]*\\>\\)\\|'\\([^']*\\>\\)\\)\\="
t t))
(defvar company-nxml-in-tag-name-regexp
(replace-regexp-in-string "w" company-nxml-token-regexp
"<\\(/?w\\(?::w?\\)?\\)?\\=" t t))
(defun company-nxml-all-completions (prefix alist)
(let ((candidates (mapcar 'cdr alist))
(case-fold-search nil)
filtered)
(when (cdar rng-open-elements)
(push (concat "/" (cdar rng-open-elements)) candidates))
(setq candidates (sort (all-completions prefix candidates) 'string<))
(while candidates
(unless (equal (car candidates) (car filtered))
(push (car candidates) filtered))
(pop candidates))
(nreverse filtered)))
(defmacro company-nxml-prepared (&rest body)
(declare (indent 0) (debug t))
`(let ((lt-pos (save-excursion (search-backward "<" nil t))))
(when (and lt-pos (= (rng-set-state-after lt-pos) lt-pos))
,@body)))
(defun company-nxml-tag (command &optional arg &rest _ignored)
(cl-case command
(prefix (and (derived-mode-p 'nxml-mode)
rng-validate-mode
(company-grab company-nxml-in-tag-name-regexp 1)))
(candidates (company-nxml-prepared
(company-nxml-all-completions
arg (rng-match-possible-start-tag-names))))
(sorted t)))
(defun company-nxml-attribute (command &optional arg &rest _ignored)
(cl-case command
(prefix (and (derived-mode-p 'nxml-mode)
rng-validate-mode
(memq (char-after) '(?\ ?\t ?\n)) ;; outside word
(company-grab rng-in-attribute-regex 1)))
(candidates (company-nxml-prepared
(and (rng-adjust-state-for-attribute
lt-pos (- (point) (length arg)))
(company-nxml-all-completions
arg (rng-match-possible-attribute-names)))))
(sorted t)))
(defun company-nxml-attribute-value (command &optional arg &rest _ignored)
(cl-case command
(prefix (and (derived-mode-p 'nxml-mode)
rng-validate-mode
(and (memq (char-after) '(?' ?\" ?\ ?\t ?\n)) ;; outside word
(looking-back company-nxml-in-attribute-value-regexp nil)
(or (match-string-no-properties 4)
(match-string-no-properties 5)
""))))
(candidates (company-nxml-prepared
(let (attr-start attr-end colon)
(and (looking-back rng-in-attribute-value-regex lt-pos)
(setq colon (match-beginning 2)
attr-start (match-beginning 1)
attr-end (match-end 1))
(rng-adjust-state-for-attribute lt-pos attr-start)
(rng-adjust-state-for-attribute-value
attr-start colon attr-end)
(all-completions
arg (rng-match-possible-value-strings))))))))
;;;###autoload
(defun company-nxml (command &optional arg &rest _ignored)
"`company-mode' completion backend for `nxml-mode'."
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-nxml))
(prefix (or (company-nxml-tag 'prefix)
(company-nxml-attribute 'prefix)
(company-nxml-attribute-value 'prefix)))
(candidates (cond
((company-nxml-tag 'prefix)
(company-nxml-tag 'candidates arg))
((company-nxml-attribute 'prefix)
(company-nxml-attribute 'candidates arg))
((company-nxml-attribute-value 'prefix)
(sort (company-nxml-attribute-value 'candidates arg)
'string<))))
(sorted t)))
(provide 'company-nxml)
;;; company-nxml.el ends here