bindings: Make some value iterator properties aliases to Array.prototype functions

third_party/WebKit/Source/bindings/scripts/v8_interface.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 # coding=utf-8
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 361 matching lines @@
 
     # Window.idl in Blink has indexed properties, but the spec says Window
     # interface doesn't have indexed properties, instead the WindowProxy exotic
     # object has indexed properties.  Thus, Window interface must not support
     # iterators.
     has_array_iterator = (not interface.is_partial and
                           interface.has_indexed_elements and
                           interface.name != 'Window')
     context.update({
         'has_array_iterator': has_array_iterator,
+        'iterable': interface.iterable,
     })
 
     # Conditionally enabled members
     has_conditional_attributes_on_prototype = any(  # pylint: disable=invalid-name
         (attribute['exposed_test'] or attribute['secure_context_test']) and attribute['on_prototype']
         for attribute in attributes)
     context.update({
         'has_conditional_attributes_on_prototype':
             has_conditional_attributes_on_prototype,
     })
@@ skipping 146 matching lines @@
                 extended_attributes=used_extended_attributes,
                 implemented_as=implemented_as)
 
         if not interface.has_indexed_elements:
             iterator_method = generated_iterator_method('iterator', implemented_as='iterator')
 
         if interface.iterable or interface.maplike or interface.setlike:
             non_overridable_methods = []
             overridable_methods = []
 
-            non_overridable_methods.extend([
-                generated_iterator_method('keys'),
-                generated_iterator_method('values'),
-                generated_iterator_method('entries'),
+            is_value_iterator = interface.iterable and interface.iterable.key_type is None
 
-                # void forEach(Function callback, [Default=Undefined] optional any thisArg)
-                generated_method(IdlType('void'), 'forEach',
-                                 arguments=[generated_argument(IdlType('Function'), 'callback'),
-                                            generated_argument(IdlType('any'), 'thisArg',
-                                                               is_optional=True,
-                                                               extended_attributes={'Default': 'Undefined'})],
-                                 extended_attributes=forEach_extended_attributes),
-            ])
+            # For value iterators, the |entries|, |forEach|, |keys| and |values| are originally set
+            # to corresponding properties in %ArrayPrototype%.
+            if not is_value_iterator:
+                non_overridable_methods.extend([
+                    generated_iterator_method('keys'),
+                    generated_iterator_method('values'),
+                    generated_iterator_method('entries'),
+
+                    # void forEach(Function callback, [Default=Undefined] optional any thisArg)
+                    generated_method(IdlType('void'), 'forEach',
+                                     arguments=[generated_argument(IdlType('Function'), 'callback'),
+                                                generated_argument(IdlType('any'), 'thisArg',
+                                                                   is_optional=True,
+                                                                   extended_attributes={'Default': 'Undefined'})],
+                                     extended_attributes=forEach_extended_attributes),
+                ])
 
             if interface.maplike:
                 key_argument = generated_argument(interface.maplike.key_type, 'key')
                 value_argument = generated_argument(interface.maplike.value_type, 'value')
 
                 non_overridable_methods.extend([
                     generated_method(IdlType('boolean'), 'has',
                                      arguments=[key_argument],
                                      extended_attributes=used_extended_attributes),
                     generated_method(IdlType('any'), 'get',
@@ skipping 908 matching lines @@
     extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     is_ce_reactions = 'CEReactions' in extended_attributes
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_ce_reactions': is_ce_reactions,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }