Generate ax enums from idl.

tools/json_schema_compiler/cpp_util.py

Index: tools/json_schema_compiler/cpp_util.py
diff --git a/tools/json_schema_compiler/cpp_util.py b/tools/json_schema_compiler/cpp_util.py
index 1e7c3707883bccdce8fd80279e210ad0620bee36..64ac9b05c187bd609671467dbe466de0fecdf536 100644
--- a/tools/json_schema_compiler/cpp_util.py
+++ b/tools/json_schema_compiler/cpp_util.py
@@ -110,6 +110,8 @@ def OpenNamespace(namespace):
   """Get opening root namespace declarations.
   """
   c = Code()
+  if namespace == '':
+    return c

[not at google - send to devlin, 2014/01/23 16:07:12]

why do you need these changes?

[David Tseng, 2014/01/23 17:44:42]

Check out ui/accessibility/accessibility.gyp and ax:root_namespace.

The namespace generated by the tool is root_namespace + namespace of the idl.

Unfortunately, if root namespace is empty, the tool generates an anonymous
namespace in the header file which isn't what we ever want I think.

For the existing ui/accessibility files, everything's placed under the ui
namespace, so we're forced to use ui.idl and namespace it into ui with an empty
namespace.

Would love to hear any alternatives to achieve the above.

[not at google - send to devlin, 2014/01/23 18:01:23]

I see. Can you leave out the root_namespace from the gyp file, or set it to None
or something? Having it as empty-string seems wrong if this is the intention.

[David Tseng, 2014/01/23 18:18:25]

Agreed. However, root_namespace is required and gyp doesn't like root_namespace
set to None (complains about Type error for NoneType).

   for component in namespace.split('::'):
     c.Append('namespace %s {' % component)
   return c
@@ -119,6 +121,8 @@ def CloseNamespace(namespace):
   """Get closing root namespace declarations.
   """
   c = Code()
+  if namespace == '':
+    return c
   for component in reversed(namespace.split('::')):
     c.Append('}  // namespace %s' % component)
   return c