Support proper parsing of sequence<T>.

lib/html/scripts/generator.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 systems to generate
 Dart APIs from the IDL database."""
 
 import copy
 import re
@@ skipping 73 matching lines @@
   for parent in interface.parents:
     if database.HasInterface(parent.type.id):
       parent_interface = database.GetInterface(parent.type.id)
       (element_type, _) = ListImplementationInfo(parent_interface, database)
       if element_type:
         return (element_type, False)
 
   return (None, None)
 
 
-def MaybeListElementTypeName(type_name):
-  """Returns the List element type T from string of form "List<T>", or None."""
-  match = re.match(r'sequence<(\w*)>$', type_name)
-  if match:
-    return match.group(1)
-  return None
-
 def MaybeListElementType(interface):
   """Returns the List element type T, or None in interface does not implement
   List<T>.
   """
   for parent in interface.parents:
-    element_type = MaybeListElementTypeName(parent.type.id)
-    if element_type:
-      return element_type
+    match = re.match(r'sequence<(\w*)>$', parent.type.id)
+    if match:
+      return match.group(1)
   return None
 
 def MaybeTypedArrayElementType(interface):
   """Returns the typed array element type, or None in interface is not a
   TypedArray.
   """
   # Typed arrays implement ArrayBufferView and List<T>.
   for parent in interface.parents:
     if parent.type.id == 'ArrayBufferView':
       return MaybeListElementType(interface)
@@ skipping 749 matching lines @@
     if match:
       if type_name == 'DOMString[]':
         return DOMStringArrayTypeInfo(TypeData('Sequence'), self.TypeInfo('DOMString'))
       item_info = self.TypeInfo(match.group(1) or match.group(2))
       return SequenceIDLTypeInfo(type_name, TypeData('Sequence'), item_info)
     if not type_name in _idl_type_registry:
       return InterfaceIDLTypeInfo(type_name, TypeData('Interface'))
     type_data = _idl_type_registry.get(type_name)
     class_name = '%sIDLTypeInfo' % type_data.clazz
     return globals()[class_name](type_name, type_data)