Allow more objects to be treated as ArrayBuffer and ArrayBufferView.

tools/dom/scripts/htmldartgenerator.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
 from generator import AnalyzeOperation, ConstantOutputOrder, \
@@ skipping 213 matching lines @@
       version[0] += 1
       generate_call(stmts_emitter, call_emitter,
           version[0], signature_index, argument_count)
 
     def GenerateChecksAndCall(signature_index, argument_count):
       checks = []
       for i in range(0, argument_count):
         argument = signatures[signature_index][i]
         parameter_name = parameter_names[i]
         test_type = self._DartType(argument.type.id)
+        # TODO(antonm): temporary ugly hack.

[Mads Ager (google), 2013/03/11 14:13:18]

Let's expand on the comment?

Temporary ugly hack to be able to work with existing typed array types as well
as dart:typeddata types until the transition to dart:typeddata is complete for
both dart2js and dartium.

[Anton Muhin, 2013/03/11 14:35:27]

Done.

+        from systemnative import DartiumBackend
+        if isinstance(self, DartiumBackend):
+          if argument.type.id == 'ArrayBufferView':
+            checks.append(
+                '(%(name)s is ArrayBufferView '
+                '|| %(name)s is _typeddata.TypedData '
+                '|| %(name)s == null)' % {'name': parameter_name})
+            continue
+          if argument.type.id == 'ArrayBuffer':
+            checks.append(
+                '(%(name)s is ArrayBuffer '
+                '|| %(name)s is _typeddata.ByteBuffer '
+                '|| %(name)s == null)' % {'name': parameter_name})
+            continue
+        # end of ugly hack.
         if test_type in ['dynamic', 'Object']:
           checks.append('?%s' % parameter_name)
         elif not can_omit_type_check(test_type, i):
           checks.append('(%s is %s || %s == null)' % (
               parameter_name, test_type, parameter_name))
       # There can be multiple presence checks.  We need them all since a later
       # optional argument could have been passed by name, leaving 'holes'.
       checks.extend(['!?%s' % name for name in parameter_names[argument_count:]])
 
       GenerateCall(signature_index, argument_count, checks)
@@ skipping 359 matching lines @@
         walk(interface.parents)
       else:
         walk(interface.parents[1:])
     return result
 
   def _DartType(self, type_name):
     return self._type_registry.DartType(type_name)
 
   def _IsPrivate(self, name):
     return name.startswith('_')