Convert snakecase enum names to camelcase when stringified.

tools/json_schema_compiler/cc_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 re
 import schema_util
 import util_cc_helper
 
 class CCGenerator(object):
   def __init__(self, type_generator, cpp_namespace):
     self._type_generator = type_generator
     self._cpp_namespace = cpp_namespace
 
   def Generate(self, namespace):
     return _Generator(namespace,
@@ skipping 865 matching lines @@
     classname = cpp_util.Classname(schema_util.StripNamespace(type_.name))
 
     if cpp_namespace is not None:
       c.Append('// static')
     maybe_namespace = '' if cpp_namespace is None else '%s::' % cpp_namespace
 
     c.Sblock('std::string %sToString(%s enum_param) {' %
                  (maybe_namespace, classname))
     c.Sblock('switch (enum_param) {')
     for enum_value in self._type_helper.FollowRef(type_).enum_values:
+      name = enum_value.name
+      if 'camel_case_enum_to_string' in self._namespace.compiler_options:
+        name = re.sub("_\S",

[not at google - send to devlin, 2014/05/13 18:36:35]

I don't know the re library well enough to tell what this means. Generally I
like to avoid use of re because it's rather esoteric, and simple mechanical
operations like this are achievable using standard string operations.

could you add a comment? what transformation are you making? why?

[David Tseng, 2014/05/13 20:10:17]

I re-wrote this without re. Hopefully that's clearer.

+                      lambda m: m.string[m.start() + 1 : m.end()].upper(),
+                      enum_value.name)
       (c.Append('case %s: ' % self._type_helper.GetEnumValue(type_, enum_value))
-        .Append('  return "%s";' % enum_value.name))
+        .Append('  return "%s";' % name))
     (c.Append('case %s:' % self._type_helper.GetEnumNoneValue(type_))
       .Append('  return "";')
       .Eblock('}')
       .Append('NOTREACHED();')
       .Append('return "";')
       .Eblock('}')
     )
     return c
 
   def _GenerateEnumFromString(self, cpp_namespace, type_):
@@ skipping 105 matching lines @@
     if self._generate_error_messages:
       params = list(params) + ['base::string16* error']
     return ', '.join(str(p) for p in params)
 
   def _GenerateArgs(self, args):
     """Builds the argument list for a function, given an array of arguments.
     """
     if self._generate_error_messages:
       args = list(args) + ['error']
     return ', '.join(str(a) for a in args)