Mojo: Add support for constants to the IDL compiler.

mojo/public/tools/bindings/pylib/mojom/generate/module.py

 # Copyright 2013 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.
 
 # This module's classes provide an interface to mojo modules. Modules are
 # collections of interfaces and structs to be used by mojo ipc clients and
 # servers.
 #
 # A simple interface would be created this way:
 # module = mojom.generate.module.Module('Foo')
@@ skipping 42 matching lines @@
   DOUBLE,
   STRING,
   HANDLE,
   DCPIPE,
   DPPIPE,
   MSGPIPE,
   SHAREDBUFFER
 )
 
 
-class Constant(object):
-  def __init__(self, module, enum, field):
+class NamedValue(object):
+  def __init__(self, module, parent_kind, name):
     self.module = module
     self.namespace = module.namespace
-    self.parent_kind = enum.parent_kind
-    self.name = [enum.name, field.name]
+    self.parent_kind = parent_kind
+    self.name = name
     self.imported_from = None
 
   def GetSpec(self):
     return (self.namespace + '.' +
-        (self.parent_kind and (self.parent_kind.name + '.') or "") + \
-        self.name[1])
+        (self.parent_kind and (self.parent_kind.name + '.') or "") +
+        self.name)
+
+
+class EnumValue(NamedValue):
+  def __init__(self, module, enum, field):
+    NamedValue.__init__(self, module, enum.parent_kind, field.name)
+    self.enum_name = enum.name
+
+
+class Constant(object):
+  def __init__(self, name=None, kind=None, value=None):
+    self.name = name
+    self.kind = kind
+    self.value = value
 
 
 class Field(object):
   def __init__(self, name=None, kind=None, ordinal=None, default=None):
     self.name = name
     self.kind = kind
     self.ordinal = ordinal
     self.default = default
 
 
@@ skipping 99 matching lines @@
 
   def AddInterface(self, name):
     interface=Interface(name, module=self);
     self.interfaces.append(interface)
     return interface
 
   def AddStruct(self, name):
     struct=Struct(name, module=self)
     self.structs.append(struct)
     return struct