Add WebIDL compliant parser plus tests

tools/idl_parser/idl_parser_test.py

+#!/usr/bin/env python
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import glob
+import unittest
+
+from idl_lexer import IDLLexer
+from idl_parser import IDLParser, ParseFile
+
+def ParseCommentTest(comment):
+  comment = comment.strip()
+  comments = comment.split(None, 1)
+  return comments[0], comments[1]
+
+
+class WebIDLParser(unittest.TestCase):
+  def setUp(self):
+    self.parser = IDLParser(IDLLexer(), mute_error=True)
+    self.filenames = glob.glob('test_parser/*.idl')
+
+  def _TestNode(self, node):
+    comments = node.GetListOf('Comment')
+    for comment in comments:
+      check, value = ParseCommentTest(comment.GetName())
+      if check == 'BUILD':
+        msg = 'Expecting %s, but found %s.\n' % (value, str(node))
+        self.assertEqual(value, str(node), msg)
+
+      if check == 'ERROR':
+        msg = node.GetLogLine('Expecting\n\t%s\nbut found \n\t%s\n' % (
+                              value, str(node)))
+        self.assertEqual(value, node.GetName(), msg)
+
+      if check == 'PROP':
+        key, expect = value.split('=')
+        actual = str(node.GetProperty(key))
+        msg = 'Mismatched property %s: %s vs %s.\n' % (key, expect, actual)
+        self.assertEqual(expect, actual, msg)
+
+      if check == 'TREE':
+        quick = '\n'.join(node.Tree())
+        lineno = node.GetProperty('LINENO')
+        msg = 'Mismatched tree at line %d:\n%sVS\n%s' % (lineno, value, quick)
+        self.assertEqual(value, quick, msg)
+
+  def testExpectedNodes(self):
+    for filename in self.filenames:
+      filenode = ParseFile(self.parser, filename)
+      children = filenode.GetChildren()
+      self.assertTrue(len(children) > 2, 'Expecting children in %s.' %
+                      filename)
+
+      for node in filenode.GetChildren()[2:]:
+        self._TestNode(node)
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)
+