feat: Parse struct constructor initializer list using clang CLI (#19)

At this time, only parse the struct constructors, but not the assign
constructors, and move constructors.

cxx-parser/__integration_test__/cxx_parser.integration.test.ts

@@ -4,7 +4,8 @@ import path from 'path';
 
 import { TerraContext } from '@agoraio-extensions/terra-core';
 
-import { dumpCXXAstJson } from '../src/cxx_parser';
+import { CXXParser, dumpCXXAstJson } from '../src/cxx_parser';
+import { CXXFile, Struct } from '../src/cxx_terra_node';
 
 describe('cxx_parser', () => {
   let tmpDir: string = '';
@@ -27,8 +28,8 @@ describe('cxx_parser', () => {
         file1Path,
         `
 struct AAA {
-    int a;
-}
+  int a;
+};
 `
       );
 
@@ -85,4 +86,55 @@ struct AAA {
       expect(JSON.parse(json)).toEqual(JSON.parse(expectedJson));
     });
   });
+
+  describe('CXXParser', () => {
+    it('parse Struct with constructor initializer list', () => {
+      let file1Name = 'file1.h';
+      let file1Path = path.join(tmpDir, file1Name);
+
+      fs.writeFileSync(
+        file1Path,
+        `
+#pragma once
+
+namespace ns1 {
+  struct AAA {
+      int aaa_;
+
+      AAA(): aaa_(0) {}
+      AAA(int aaa): aaa_(aaa) {}
+  };
+}
+`
+      );
+
+      let args = {
+        includeHeaderDirs: [],
+        definesMacros: [],
+        parseFiles: { include: [file1Name] },
+        customHeaders: [],
+      };
+
+      let parseResult = CXXParser(
+        new TerraContext(tmpDir, tmpDir),
+        args,
+        undefined
+      )!;
+
+      let s = (parseResult.nodes[0] as CXXFile).nodes[0] as Struct;
+      expect(s.constructors.length).toBe(2);
+
+      expect(s.constructors[0].initializerList.length).toBe(1);
+      expect(s.constructors[0].initializerList[0].kind).toEqual('Value');
+      expect(s.constructors[0].initializerList[0].name).toEqual('aaa_');
+      expect(s.constructors[0].initializerList[0].type).toEqual('int');
+      expect(s.constructors[0].initializerList[0].values).toEqual(['0']);
+
+      expect(s.constructors[1].initializerList.length).toBe(1);
+      expect(s.constructors[1].initializerList[0].kind).toEqual('Parameter');
+      expect(s.constructors[1].initializerList[0].name).toEqual('aaa_');
+      expect(s.constructors[1].initializerList[0].type).toEqual('int');
+      expect(s.constructors[1].initializerList[0].values).toEqual(['aaa']);
+    });
+  });
 });