Move interface members traverse logic to BaseGenerator.

lib/dom/scripts/systemnative.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. 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 provides shared functionality for the systems to generate
 native binding from the IDL database."""
 
 import emitter
 import os
+import systembase
 from generator import *
-from systembase import *
 from systemhtml import DomToHtmlEvent, DomToHtmlEvents, HtmlSystemShared
 from systemhtml import HtmlElementConstructorInfos
 from systemhtml import EmitHtmlElementFactoryConstructors
 
-class NativeImplementationSystem(System):
+class NativeImplementationSystem(systembase.System):
 
   def __init__(self, templates, database, html_database, html_renames,
                emitters, output_dir):
     super(NativeImplementationSystem, self).__init__(
         templates, database, emitters, output_dir)
 
     self._html_renames = html_renames
     self._dom_impl_files = []
     self._cpp_header_files = []
     self._cpp_impl_files = []
@@ skipping 157 matching lines @@
       self._dom_impl_files.append(file_name)
       template = self._templates.Load('factoryprovider_%s.darttemplate' % name)
       file_emitter = self._emitters.FileEmitter(file_name)
       self._factory_provider_emitters[name] = file_emitter.Emit(template)
     return self._factory_provider_emitters[name]
 
   def DartImplementationFiles(self):
     return self._dom_impl_files
 
 
-class NativeImplementationGenerator(object):
+class NativeImplementationGenerator(systembase.BaseGenerator):
   """Generates Dart implementation for one DOM IDL interface."""
 
   def __init__(self, system, interface,
                dart_impl_emitter, cpp_header_emitter, cpp_impl_emitter,
                base_members, templates):
     """Generates Dart and C++ code for the given interface.
 
     Args:
       system: The NativeImplementationSystem.
       interface: an IDLInterface instance. It is assumed that all types have
           been converted to Dart types (e.g. int, String), unless they are in
           the same package as the interface.
       dart_impl_emitter: an Emitter for the file containing the Dart
          implementation class.
       cpp_header_emitter: an Emitter for the file containing the C++ header.
       cpp_impl_emitter: an Emitter for the file containing the C++
          implementation.
       base_members: a set of names of members defined in a base class.  This is
           used to avoid static member 'overriding' in the generated Dart code.
     """
+    super(NativeImplementationGenerator, self).__init__(system._database)
     self._system = system
     self._interface = interface
     self._dart_impl_emitter = dart_impl_emitter
     self._cpp_header_emitter = cpp_header_emitter
     self._cpp_impl_emitter = cpp_impl_emitter
     self._base_members = base_members
     self._templates = templates
     self._current_secondary_parent = None
     self._html_system = self._system._html_system
 
@@ skipping 819 matching lines @@
   for parent in interface.parents:
     parent_name = parent.type.id
     if not database.HasInterface(parent.type.id):
       continue
     parent_interface = database.GetInterface(parent.type.id)
     if callback(parent_interface):
       return parent_interface
     parent_interface = _FindParent(parent_interface, database, callback)
     if parent_interface:
       return parent_interface