Import chrome idl into third_party

third_party/chrome/tools/json_parse.py

+# Copyright (c) 2012 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 json
+import logging
+import os
+import sys
+
+_FILE_PATH = os.path.dirname(os.path.realpath(__file__))
+_SYS_PATH = sys.path[:]
+try:
+  _COMMENT_EATER_PATH = os.path.join(_FILE_PATH, os.pardir)
+  sys.path.insert(0, _COMMENT_EATER_PATH)
+  import json_comment_eater
+finally:
+  sys.path = _SYS_PATH
+
+try:
+  from collections import OrderedDict
+
+  # Successfully imported, so we're running Python >= 2.7, and json.loads
+  # supports object_pairs_hook.
+  def Parse(json_str):
+    return json.loads(json_comment_eater.Nom(json_str),
+                      object_pairs_hook=OrderedDict)
+
+except ImportError:
+  # Failed to import, so we're running Python < 2.7, and json.loads doesn't
+  # support object_pairs_hook. simplejson however does, but it's slow.
+  #
+  # TODO(cduvall/kalman): Refuse to start the docs server in this case, but
+  # let json-schema-compiler do its thing.
+  #logging.warning('Using simplejson to parse, this might be slow! Upgrade to '
+  #                'Python 2.7.')
+
+  _SYS_PATH = sys.path[:]
+  try:
+    _SIMPLE_JSON_PATH = os.path.join(_FILE_PATH,
+                                     os.pardir,
+                                     os.pardir,
+                                     'third_party')
+    sys.path.insert(0, _SIMPLE_JSON_PATH)
+    # Add this path in case this is being used in the docs server.
+    sys.path.insert(0, os.path.join(_FILE_PATH,
+                                    os.pardir,
+                                    os.pardir,
+                                    'third_party',
+                                    'json_schema_compiler'))
+    import simplejson
+    from simplejson import OrderedDict
+  finally:
+    sys.path = _SYS_PATH
+
+  def Parse(json_str):
+    return simplejson.loads(json_comment_eater.Nom(json_str),
+                            object_pairs_hook=OrderedDict)
+
+def IsDict(item):
+  return isinstance(item, (dict, OrderedDict))