Add support for type checking of floating point attributes

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 58 matching lines @@
         extended_attributes['RaisesException'] in [None, 'Setter'])
     # [TypeChecking]
     has_type_checking_interface = (
         (has_extended_attribute_value(interface, 'TypeChecking', 'Interface') or
          has_extended_attribute_value(attribute, 'TypeChecking', 'Interface')) and
         idl_type.is_wrapper_type)
     has_type_checking_nullable = (
         (has_extended_attribute_value(interface, 'TypeChecking', 'Nullable') or
          has_extended_attribute_value(attribute, 'TypeChecking', 'Nullable')) and
          idl_type.is_wrapper_type)
+    has_type_checking_unrestricted = (
+        (has_extended_attribute_value(interface, 'TypeChecking', 'Unrestricted') or
+         has_extended_attribute_value(attribute, 'TypeChecking', 'Unrestricted')) and
+         idl_type.name in ('Float', 'Double'))
 
     if (base_idl_type == 'EventHandler' and
         interface.name in ['Window', 'WorkerGlobalScope'] and
         attribute.name == 'onerror'):
         includes.add('bindings/v8/V8ErrorHandler.h')
 
     contents = {
         'access_control_list': access_control_list(attribute),
         'activity_logging_world_list_for_getter': v8_utilities.activity_logging_world_list(attribute, 'Getter'),  # [ActivityLogging]
         'activity_logging_world_list_for_setter': v8_utilities.activity_logging_world_list(attribute, 'Setter'),  # [ActivityLogging]
         'cached_attribute_validation_method': extended_attributes.get('CachedAttribute'),
         'conditional_string': v8_utilities.conditional_string(attribute),
         'constructor_type': idl_type.constructor_type_name
                             if is_constructor_attribute(attribute) else None,
         'cpp_name': cpp_name(attribute),
         'cpp_type': idl_type.cpp_type,
         'deprecate_as': v8_utilities.deprecate_as(attribute),  # [DeprecateAs]
         'enum_validation_expression': idl_type.enum_validation_expression,
         'has_custom_getter': has_custom_getter,
         'has_custom_setter': has_custom_setter,
+        'has_setter_exception_state':
+            is_setter_raises_exception or has_type_checking_interface or
+            has_type_checking_nullable or has_type_checking_unrestricted or
+            idl_type.is_integer_type,
         'has_type_checking_interface': has_type_checking_interface,
         'has_type_checking_nullable': has_type_checking_nullable,
+        'has_type_checking_unrestricted': has_type_checking_unrestricted,
         'idl_type': str(idl_type),  # need trailing [] on array for Dictionary::ConversionContext::setConversionType
         'is_call_with_execution_context': v8_utilities.has_extended_attribute_value(attribute, 'CallWith', 'ExecutionContext'),
         'is_call_with_script_state': v8_utilities.has_extended_attribute_value(attribute, 'CallWith', 'ScriptState'),
         'is_check_security_for_node': is_check_security_for_node,
         'is_custom_element_callbacks': is_custom_element_callbacks,
         'is_expose_js_accessors': 'ExposeJSAccessors' in extended_attributes,
-        'is_getter_raises_exception': (  # [RaisesException]
+        'is_getter_raises_exception':  # [RaisesException]
             'RaisesException' in extended_attributes and
-            extended_attributes['RaisesException'] in [None, 'Getter']),
+            extended_attributes['RaisesException'] in (None, 'Getter'),
         'is_initialized_by_event_constructor':
             'InitializedByEventConstructor' in extended_attributes,
         'is_keep_alive_for_gc': is_keep_alive_for_gc(interface, attribute),
         'is_nullable': attribute.idl_type.is_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_setter_call_with_execution_context': v8_utilities.has_extended_attribute_value(attribute, 'SetterCallWith', 'ExecutionContext'),
         'is_setter_raises_exception': is_setter_raises_exception,
-        'has_setter_exception_state': (
-            is_setter_raises_exception or has_type_checking_interface or
-            has_type_checking_nullable or idl_type.is_integer_type),
         '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]
         'name': attribute.name,
         'per_context_enabled_function': v8_utilities.per_context_enabled_function_name(attribute),  # [PerContextEnabled]
         'property_attributes': property_attributes(attribute),
         'put_forwards': 'PutForwards' in extended_attributes,
         'reflect_empty': extended_attributes.get('ReflectEmpty'),
         'reflect_invalid': extended_attributes.get('ReflectInvalid', ''),
@@ skipping 275 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 generate_constructor_getter(interface, attribute, contents):
     contents['needs_constructor_getter_callback'] = contents['measure_as'] or contents['deprecate_as']