IDL clean-up: Rename is_nullable_simple => is_implicit_nullable

Source/bindings/scripts/v8_attributes.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 96 matching lines @@
         'is_custom_element_callbacks': is_custom_element_callbacks,
         'is_expose_js_accessors': 'ExposeJSAccessors' in extended_attributes,
         'is_getter_raises_exception':  # [RaisesException]
             'RaisesException' in extended_attributes and
             extended_attributes['RaisesException'] in (None, 'Getter'),
         'is_implemented_in_private_script': is_implemented_in_private_script,
         'is_initialized_by_event_constructor':
             'InitializedByEventConstructor' in extended_attributes,
         'is_keep_alive_for_gc': is_keep_alive_for_gc(interface, attribute),
         'is_nullable': idl_type.is_nullable,
-        'is_nullable_simple': idl_type.is_nullable_simple,
+        'is_explicit_nullable': idl_type.is_explicit_nullable,
         'is_partial_interface_member':
             'PartialInterfaceImplementedAs' in extended_attributes,
         'is_per_world_bindings': 'PerWorldBindings' in extended_attributes,
         'is_read_only': attribute.is_read_only,
         'is_reflect': is_reflect,
         'is_replaceable': 'Replaceable' in attribute.extended_attributes,
         'is_static': attribute.is_static,
         'is_url': 'URL' in extended_attributes,
         'is_unforgeable': 'Unforgeable' in extended_attributes,
         'measure_as': v8_utilities.measure_as(attribute),  # [MeasureAs]
@@ skipping 48 matching lines @@
     if 'ImplementedInPrivateScript' in extended_attributes:
         if (not idl_type.is_wrapper_type and
             not idl_type.is_basic_type):
             raise Exception('Private scripts supports only primitive types and DOM wrappers.')
 
         context['cpp_value_original'] = cpp_value
         cpp_value = 'result'
         # EventHandler has special handling
         if base_idl_type != 'EventHandler':
             release = idl_type.release
-    elif ((idl_type.is_nullable and not context['is_nullable_simple']) or
+    elif (idl_type.is_explicit_nullable or
         base_idl_type == 'EventHandler' or
         'CachedAttribute' in extended_attributes or
         'LogPreviousValue' in extended_attributes or
         'ReflectOnly' in extended_attributes or
         context['is_keep_alive_for_gc'] or
         context['is_getter_raises_exception']):
         context['cpp_value_original'] = cpp_value
         cpp_value = 'cppValue'
         # EventHandler has special handling
         if base_idl_type != 'EventHandler':
@@ skipping 24 matching lines @@
         arguments.append('impl')
         arguments.append('&result')
     arguments.extend(v8_utilities.call_with_arguments(
         attribute.extended_attributes.get('CallWith')))
     # Members of IDL partial interface definitions are implemented in C++ as
     # static member functions, which for instance members (non-static members)
     # take *impl as their first argument
     if ('PartialInterfaceImplementedAs' in attribute.extended_attributes and
         not attribute.is_static):
         arguments.append('*impl')
-    if attribute.idl_type.is_nullable and not context['is_nullable_simple']:
+    if attribute.idl_type.is_explicit_nullable:
         arguments.append('isNull')
     if context['is_getter_raises_exception']:
         arguments.append('exceptionState')
     return '%s(%s)' % (getter_name, ', '.join(arguments))
 
 
 CONTENT_ATTRIBUTE_GETTER_NAMES = {
     'boolean': 'fastHasAttribute',
     'long': 'getIntegralAttribute',
     'unsigned long': 'getUnsignedIntegralAttribute',
@@ skipping 224 matching lines @@
     lambda self: strip_suffix(self.base_type, 'Constructor'))
 
 
 def is_constructor_attribute(attribute):
     # FIXME: replace this with [ConstructorAttribute] extended attribute
     return attribute.idl_type.base_type.endswith('Constructor')
 
 
 def constructor_getter_context(interface, attribute, context):
     context['needs_constructor_getter_callback'] = context['measure_as'] or context['deprecate_as']