Typed array constructors with optional buffer offset and length.

lib/dom/scripts/systeminterface.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 providesfunctionality for systems to generate
 Dart interfaces from the IDL database."""
 
 import os
 import systembase
@@ skipping 130 matching lines @@
           PARAMS=constructor_info.ParametersInterfaceDeclaration());
 
     element_type = MaybeTypedArrayElementType(self._interface)
     if element_type:
       self._members_emitter.Emit(
           '\n'
           '  $CTOR(int length);\n'
           '\n'
           '  $CTOR.fromList(List<$TYPE> list);\n'
           '\n'
-          '  $CTOR.fromBuffer(ArrayBuffer buffer);\n',
+          '  $CTOR.fromBuffer(ArrayBuffer buffer,'
+                            ' [int byteOffset, int length]);\n',
           CTOR=self._interface.id,
           TYPE=DartType(element_type))
 
 
   def FinishInterface(self):
     # TODO(vsm): Use typedef if / when that is supported in Dart.
     # Define variant as subtype.
     if (self._super_interface and
         self._interface.id is not self._super_interface):
       consts_emitter = self._top_level_emitter.Emit(
@@ skipping 46 matching lines @@
                                TYPE=info.type_name,
                                NAME=info.name,
                                PARAMS=info.ParametersInterfaceDeclaration())
 
   # Interfaces get secondary members directly via the superinterfaces.
   def AddSecondaryAttribute(self, interface, getter, setter):
     pass
 
   def AddSecondaryOperation(self, interface, attr):
     pass