Restructure handling of list type extended attributes

Source/bindings/scripts/idl_definitions.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 619 matching lines @@
 
 
 ################################################################################
 # Extended attributes
 ################################################################################
 
 def ext_attributes_node_to_extended_attributes(idl_name, node):
     """
     Returns:
       Dictionary of {ExtAttributeName: ExtAttributeValue}.
-      Value is usually a string, with three exceptions:
+      Value is usually a string, with these exceptions:
       Constructors: value is a list of Arguments nodes, corresponding to
         possible signatures of the constructor.
       CustomConstructors: value is a list of Arguments nodes, corresponding to
         possible signatures of the custom constructor.
       NamedConstructor: value is a Call node, corresponding to the single
         signature of the named constructor.
+      SetWrapperReferenceTo: value is an Arguments node.
     """
     # Primarily just make a dictionary from the children.
     # The only complexity is handling various types of constructors:
     # Constructors and Custom Constructors can have duplicate entries due to
     # overloading, and thus are stored in temporary lists.
     # However, Named Constructors cannot be overloaded, and thus do not have
     # a list.
     # FIXME: move Constructor logic into separate function, instead of modifying
     #        extended attributes in-place.
     constructors = []
@@ skipping 157 matching lines @@
     child_class = child.GetClass()
     if child_class != 'Type':
         raise ValueError('Unrecognized node class: %s' % child_class)
     return type_node_to_type(child)
 
 
 def union_type_node_to_idl_union_type(node):
     member_types = [type_node_to_type(member_type_node)
                     for member_type_node in node.GetChildren()]
     return IdlUnionType(member_types)