dom: Recognize __getter__ indexers

tools/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
 import logging
@@ skipping 856 matching lines @@
       self._members_emitter.Emit('\n  // From $WHERE\n', WHERE=interface.id)
 
   def HasIndexedGetter(self):
     ext_attrs = self._interface.ext_attrs
     has_indexed_getter = 'CustomIndexedGetter' in ext_attrs
     for operation in self._interface.operations:
       if operation.id == 'item' and 'getter' in operation.specials \
           and not self._OperationRequiresConversions(operation):
         has_indexed_getter = True
         break
+      if operation.id == '__getter__' and 'getter' in operation.specials \
+          and not self._OperationRequiresConversions(operation):
+        has_indexed_getter = True
+        break
     return has_indexed_getter
 
   def AddIndexer(self, element_type, nullable):
     """Adds all the methods required to complete implementation of List."""
     # We would like to simply inherit the implementation of everything except
     # length, [], and maybe []=.  It is possible to extend from a base
     # array implementation class only when there is no other implementation
     # inheritance.  There might be no implementation inheritance other than
     # DOMBaseWrapper for many classes, but there might be some where the
     # array-ness is introduced by a non-root interface:
@@ skipping 497 matching lines @@
 
   def AddFile(self, basename, library_name, path):
     self._libraries[library_name].AddFile(path)
 
   def AddTypeEntry(self, library_name, idl_name, dart_name):
     self._libraries[library_name].AddTypeEntry(idl_name, dart_name)
 
   def Emit(self, emitter, auxiliary_dir):
     for lib in self._libraries.values():
       lib.Emit(emitter, auxiliary_dir)