Introduce TypeRegistry class.

lib/dom/scripts/systemhtml.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 system to generate
 Dart:html APIs from the IDL database."""
 
 import emitter
 
@@ skipping 739 matching lines @@
 
     if events or interface.id in _html_explicit_event_classes:
       return True, events
     else:
       return False, None
 
   def IsPrivate(self, name):
     return name.startswith('_')
 
   def DartType(self, idl_type):
-    type_info = GetIDLTypeInfo(idl_type)
+    type_info = TypeRegistry().TypeInfo(idl_type)
     return self._HTMLInterfaceName(type_info.dart_type())
 
 class HtmlSystem(System):
 
-  def __init__(self, templates, database, emitters, output_dir):
-    super(HtmlSystem, self).__init__(
-        templates, database, emitters, output_dir)
-    self._shared = HtmlSystemShared(database)
+  def __init__(self, options):
+    super(HtmlSystem, self).__init__(options)
+    self._shared = HtmlSystemShared(self._database)
 
 class HtmlInterfacesSystem(HtmlSystem):
 
-  def __init__(self, templates, database, emitters, output_dir, backend):
-    super(HtmlInterfacesSystem, self).__init__(
-        templates, database, emitters, output_dir)
+  def __init__(self, options, backend):
+    super(HtmlInterfacesSystem, self).__init__(options)
     self._backend = backend
     self._dart_interface_file_paths = []
     self._elements_factory_emitter = None
 
   def ProcessInterface(self, interface):
     HtmlDartInterfaceGenerator(self, interface).Generate()
 
   def ProcessCallback(self, interface, info):
     """Generates a typedef for the callback interface."""
     interface_name = interface.id
@@ skipping 564 matching lines @@
               lambda type_name: self._NarrowInputType(type_name)))
 
   def _HasCustomImplementation(self, member_name):
     member_name = '%s.%s' % (self._html_interface_name, member_name)
     return member_name in _js_custom_members
 
 # ------------------------------------------------------------------------------
 
 class HtmlFrogSystem(HtmlSystem):
 
-  def __init__(self, templates, database, emitters, output_dir):
-    super(HtmlFrogSystem, self).__init__(
-        templates, database, emitters, output_dir)
+  def __init__(self, options):
+    super(HtmlFrogSystem, self).__init__(options)
 
   def ImplementationGenerator(self, interface):
     return HtmlFrogClassGenerator(self, interface)
 
   def GenerateLibraries(self, dart_files):
     self._GenerateLibFile(
         'html_frog.darttemplate',
         os.path.join(self._output_dir, 'html_frog.dart'),
         dart_files)
 
@@ skipping 18 matching lines @@
             Collect(database.GetInterface(parent.type.id),
                     seen, collected)
 
   inheritance_closure = {}
   for interface in database.GetInterfaces():
     seen = set()
     collected = []
     Collect(interface, seen, collected)
     inheritance_closure[interface.id] = collected
   return inheritance_closure