IDL: Add toRestricted{Float,Double}() helpers to V8Binding.h

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 1157 matching lines @@
             getter, 'Custom', 'PropertyQuery'),
         'is_enumerable': 'NotEnumerable' not in extended_attributes,
         'is_null_expression': is_null_expression(idl_type),
         'is_raises_exception': is_raises_exception,
         'name': cpp_name(getter),
         'use_output_parameter_for_result': use_output_parameter_for_result,
         'v8_set_return_value': idl_type.v8_set_return_value('result', extended_attributes=extended_attributes, script_wrappable='impl', release=idl_type.release),
     }
 
 
-def property_setter(setter):
+def property_setter(interface, setter):
     idl_type = setter.arguments[1].idl_type
     extended_attributes = setter.extended_attributes
     is_raises_exception = 'RaisesException' in extended_attributes
+    restricted_float = (
+        has_extended_attribute_value(interface, 'TypeChecking', 'Unrestricted') or
+        has_extended_attribute_value(setter, 'TypeChecking', 'Unrestricted'))
     return {
         'has_type_checking_interface':
+            # FIXME: check interface's [TypeChecking] attribute too.
             has_extended_attribute_value(setter, 'TypeChecking', 'Interface') and
             idl_type.is_wrapper_type,
         'idl_type': idl_type.base_type,
         'is_custom': 'Custom' in extended_attributes,
         'has_exception_state': (is_raises_exception or
                                 idl_type.v8_conversion_needs_exception_state),
         'is_raises_exception': is_raises_exception,
         'name': cpp_name(setter),
         'v8_value_to_local_cpp_value': idl_type.v8_value_to_local_cpp_value(
-            extended_attributes, 'v8Value', 'propertyValue'),
+            extended_attributes, 'v8Value', 'propertyValue', restricted_float),
     }
 
 
 def property_deleter(deleter):
     idl_type = deleter.idl_type
     if str(idl_type) != 'boolean':
         raise Exception(
             'Only deleters with boolean type are allowed, but type is "%s"' %
             idl_type)
     extended_attributes = deleter.extended_attributes
@@ skipping 31 matching lines @@
         # setter RETURN_TYPE [OPTIONAL_IDENTIFIER](unsigned long ARG1, ARG_TYPE ARG2)
         setter = next(
             method
             for method in interface.operations
             if ('setter' in method.specials and
                 len(method.arguments) == 2 and
                 str(method.arguments[0].idl_type) == 'unsigned long'))
     except StopIteration:
         return None
 
-    return property_setter(setter)
+    return property_setter(interface, setter)
 
 
 def indexed_property_deleter(interface):
     try:
         # Find indexed property deleter, if present; has form:
         # deleter TYPE [OPTIONAL_IDENTIFIER](unsigned long ARG)
         deleter = next(
             method
             for method in interface.operations
             if ('deleter' in method.specials and
@@ skipping 33 matching lines @@
         # setter RETURN_TYPE [OPTIONAL_IDENTIFIER](DOMString ARG1, ARG_TYPE ARG2)
         setter = next(
             method
             for method in interface.operations
             if ('setter' in method.specials and
                 len(method.arguments) == 2 and
                 str(method.arguments[0].idl_type) == 'DOMString'))
     except StopIteration:
         return None
 
-    return property_setter(setter)
+    return property_setter(interface, setter)
 
 
 def named_property_deleter(interface):
     try:
         # Find named property deleter, if present; has form:
         # deleter TYPE [OPTIONAL_IDENTIFIER](DOMString ARG)
         deleter = next(
             method
             for method in interface.operations
             if ('deleter' in method.specials and
                 len(method.arguments) == 1 and
                 str(method.arguments[0].idl_type) == 'DOMString'))
     except StopIteration:
         return None
 
     return property_deleter(deleter)