JSON Schema Compiler supports Enums as types.

tools/json_schema_compiler/h_generator.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.
 
 from code import Code
 from model import PropertyType
 import cpp_util
 import schema_util
 
 class HGenerator(object):
@@ skipping 171 matching lines @@
       if type_.description:
         c.Comment(type_.description)
       c.Append('typedef std::vector<%(item_type)s> %(classname)s;')
       c.Substitute({'classname': classname, 'item_type':
           self._cpp_type_generator.GetCompiledType(type_.item_type,
                                                    wrap_optional=True)})
     elif type_.type_ == PropertyType.STRING:
       if type_.description:
         c.Comment(type_.description)
       c.Append('typedef std::string %(classname)s;')
+    elif type_.type_ == PropertyType.ENUM:
+      if type_.description:
+        c.Comment(type_.description)
+      c.Sblock('enum %(classname)s {')
+      for value in type_.enum_values:
+        c.Append('%s_%s,' % (classname.upper(), value.upper()))
+      (c.Eblock('};')
+        .Append()
+        .Append('scoped_ptr<base::Value> CreateEnumValue(%s %s);' %
+                (classname, classname.lower()))
+      )
     else:
       if type_.description:
         c.Comment(type_.description)
       (c.Sblock('struct %(classname)s {')
           .Append('~%(classname)s();')
           .Append('%(classname)s();')
           .Append()
           .Concat(self._GeneratePropertyStructures(type_.properties.values()))
           .Concat(self._GenerateFields(type_.properties.values()))
       )
@@ skipping 146 matching lines @@
 
   def _GenerateFunctionResults(self, callback):
     """Generates namespace for passing a function's result back.
     """
     c = Code()
     (c.Sblock('namespace Results {')
         .Concat(self._GenerateCreateCallbackArguments(callback))
       .Eblock('};')
     )
     return c