Initial code generation for features.

tools/json_schema_compiler/cpp_util.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.
 
 """Utilies and constants specific to Chromium C++ code.
 """
 
 from code import Code
 from datetime import datetime
 from model import Property, PropertyType, Type
 import os
 import re
 
 CHROMIUM_LICENSE = (
 """// Copyright (c) %d 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.""" % datetime.now().year
 )
 GENERATED_FILE_MESSAGE = """// GENERATED FROM THE API DEFINITION IN
 //   %s
 // DO NOT EDIT.
 """
 GENERATED_BUNDLE_FILE_MESSAGE = """// GENERATED FROM THE API DEFINITIONS IN
 //   %s
 // DO NOT EDIT.
 """
+GENERATED_FEATURE_MESSAGE = """// GENERATED FROM THE FEATURE DEFINITIONS IN
+//   %s
+// DO NOT EDIT.
+"""
 
 def Classname(s):
   """Translates a namespace name or function name into something more
   suited to C++.
 
   eg experimental.downloads -> Experimental_Downloads
   updateAll -> UpdateAll.
   """
   return '_'.join([x[0].upper() + x[1:] for x in re.split('\W', s)])
 
@@ skipping 67 matching lines @@
     c.Append('namespace %s {' % component)
   return c
 
 def CloseNamespace(namespace):
   """Get closing root namespace declarations.
   """
   c = Code()
   for component in reversed(namespace.split('::')):
     c.Append('}  // namespace %s' % component)
   return c
+
+def RemoveFeatureDuplicates(feature_list):
+  """Return a "set" of features where any feature with the same name is tossed.

[not at google - send to devlin, 2013/09/12 16:20:43]

this method returns a list not a set.

[dhnishi (use Chromium), 2013/09/13 17:36:42]

Done.

+  """
+  feature_set = set()
+  return [feature for feature in feature_list if feature.name not in
+          feature_set and not feature_set.add(feature.name)]