Generate ax enums from idl.

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 PropertyType
@@ skipping 92 matching lines @@
   """Appends a space to |var| if it ends with a >, so that it can be compiled
   within generic types.
   """
   return ('%s ' % var) if var.endswith('>') else var
 
 
 def OpenNamespace(namespace):
   """Get opening root namespace declarations.
   """
   c = Code()
+  # In lieu of GYP supporting None for the namespace variable the '' namespace
+  # implies there is no root namespace.
+  if namespace == '':
+    return c
   for component in namespace.split('::'):
     c.Append('namespace %s {' % component)
   return c
 
 
 def CloseNamespace(namespace):
   """Get closing root namespace declarations.
   """
   c = Code()
+  # In lieu of GYP supporting None for the namespace variable the '' namespace
+  # implies there is no root namespace.
+  if namespace == '':
+    return c
   for component in reversed(namespace.split('::')):
     c.Append('}  // namespace %s' % component)
   return c
 
 
 def ConstantName(feature_name):
   """Returns a kName for a feature's name.
   """
   return ('k' + ''.join(word[0].upper() + word[1:]
       for word in feature_name.replace('.', ' ').split()))
 
 
 def CamelCase(unix_name):
   return ''.join(word.capitalize() for word in unix_name.split('_'))
 
 
 def ClassName(filepath):
   return CamelCase(os.path.split(filepath)[1])