Support WebIDL's ExtendedAttributeIdentList in the Blink parser

Source/bindings/scripts/v8_utilities.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # 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
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 42 matching lines @@
     'XSLT',
 ]
 
 
 ################################################################################
 # Extended attribute parsing
 ################################################################################
 
 def extended_attribute_value_contains(extended_attribute_value, value):
     return (extended_attribute_value and
-            value in re.split('[|&]', extended_attribute_value))
+            value in re.split('[|,]', extended_attribute_value))
 
 
 def has_extended_attribute(definition_or_member, extended_attribute_list):
     return any(extended_attribute in definition_or_member.extended_attributes
                for extended_attribute in extended_attribute_list)
 
 
 def has_extended_attribute_value(definition_or_member, name, value):
     extended_attributes = definition_or_member.extended_attributes
     return (name in extended_attributes and
@@ skipping 122 matching lines @@
 
 def call_with_arguments(call_with_values):
     if not call_with_values:
         return []
     return [CALL_WITH_ARGUMENTS[value]
             for value in CALL_WITH_VALUES
             if extended_attribute_value_contains(call_with_values, value)]
 
 
 # [Conditional]
+DELIMITER_TO_OPERATOR = {
+    '|': '||',
+    ',': '&&',
+}
+
+
 def conditional_string(definition_or_member):
     extended_attributes = definition_or_member.extended_attributes
     if 'Conditional' not in extended_attributes:
         return None
     conditional = extended_attributes['Conditional']
-    for operator in '&|':
-        if operator in conditional:
-            conditions = conditional.split(operator)
-            operator_separator = ' %s%s ' % (operator, operator)
+    for delimiter in ',|':
+        if delimiter in conditional:
+            conditions = conditional.split(delimiter)
+            operator_separator = ' %s ' % DELIMITER_TO_OPERATOR[delimiter]
             return operator_separator.join('ENABLE(%s)' % expression for expression in sorted(conditions))
     return 'ENABLE(%s)' % conditional
 
 
 # [DeprecateAs]
 def deprecate_as(member):
     extended_attributes = member.extended_attributes
     if 'DeprecateAs' not in extended_attributes:
         return None
     includes.add('core/frame/UseCounter.h')
@@ skipping 42 matching lines @@
 
     The returned function checks if a method/attribute is enabled.
     Given extended attribute RuntimeEnabled=FeatureName, return:
         RuntimeEnabledFeatures::{featureName}Enabled
     """
     extended_attributes = definition_or_member.extended_attributes
     if 'RuntimeEnabled' not in extended_attributes:
         return None
     feature_name = extended_attributes['RuntimeEnabled']
     return 'RuntimeEnabledFeatures::%sEnabled' % uncapitalize(feature_name)