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Fixing retrieval of [[Class]] properties for built-in function objects, optimizing memory related to [[Class]] property.

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- introduced ecma_object_get_class_name interface;
 - removed creation of [[Class]] internal property for types of objects that unambiguously determine the [[Class]] value.

Related issue: #112

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-05-28 20:49:55 +03:00
parent bc7c28ce12
commit da7e9d9871
18 changed files with 284 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/ecma/operations/ecma-objects.cpp
+198 -2
View File
@@ -504,8 +504,6 @@ ecma_op_object_has_instance (ecma_object_t *obj_p, /**< the object */
JERRY_UNREACHABLE ();
} /* ecma_op_object_has_instance */
/**
* Object's isPrototypeOf operation
*
@@ -533,6 +531,204 @@ ecma_op_object_is_prototype_of (ecma_object_t *base_p, /** < base object */
} while (true);
} /* ecma_op_object_is_prototype_of */
/**
* Get [[Class]] string of specified object
*
* @return class name magic string
*/
ecma_magic_string_id_t
ecma_object_get_class_name (ecma_object_t *obj_p) /**< object */
{
ecma_object_type_t type = ecma_get_object_type (obj_p);
switch (type)
{
case ECMA_OBJECT_TYPE_ARRAY:
{
return ECMA_MAGIC_STRING_ARRAY_UL;
}
case ECMA_OBJECT_TYPE_STRING:
{
return ECMA_MAGIC_STRING_STRING_UL;
}
case ECMA_OBJECT_TYPE_ARGUMENTS:
{
return ECMA_MAGIC_STRING_ARGUMENTS_UL;
}
case ECMA_OBJECT_TYPE_EXTENSION:
{
return ECMA_MAGIC_STRING_OBJECT_UL;
}
case ECMA_OBJECT_TYPE_FUNCTION:
{
ecma_magic_string_id_t class_name;
if (ecma_get_object_is_builtin (obj_p))
{
ecma_property_t *built_in_id_prop_p = ecma_get_internal_property (obj_p,
ECMA_INTERNAL_PROPERTY_BUILT_IN_ID);
ecma_builtin_id_t builtin_id = (ecma_builtin_id_t) built_in_id_prop_p->u.internal_property.value;
switch (builtin_id)
{
case ECMA_BUILTIN_ID_OBJECT:
{
class_name = ECMA_MAGIC_STRING_OBJECT_UL;
break;
}
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN
case ECMA_BUILTIN_ID_ARRAY:
{
class_name = ECMA_MAGIC_STRING_ARRAY_UL;
break;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ARRAY_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN
case ECMA_BUILTIN_ID_STRING:
{
class_name = ECMA_MAGIC_STRING_STRING_UL;
break;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN
case ECMA_BUILTIN_ID_BOOLEAN:
{
class_name = ECMA_MAGIC_STRING_BOOLEAN_UL;
break;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN
case ECMA_BUILTIN_ID_NUMBER:
{
class_name = ECMA_MAGIC_STRING_NUMBER_UL;
break;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN */
case ECMA_BUILTIN_ID_FUNCTION:
{
class_name = ECMA_MAGIC_STRING_FUNCTION_UL;
break;
}
#ifdef CONFIG_ECMA_COMPACT_PROFILE
case ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR:
{
class_name = ECMA_MAGIC_STRING_COMPACT_PROFILE_ERROR_UL;
break;
}
#endif /* CONFIG_ECMA_COMPACT_PROFILE */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS
case ECMA_BUILTIN_ID_ERROR:
case ECMA_BUILTIN_ID_EVAL_ERROR:
case ECMA_BUILTIN_ID_RANGE_ERROR:
case ECMA_BUILTIN_ID_REFERENCE_ERROR:
case ECMA_BUILTIN_ID_SYNTAX_ERROR:
case ECMA_BUILTIN_ID_TYPE_ERROR:
case ECMA_BUILTIN_ID_URI_ERROR:
{
class_name = ECMA_MAGIC_STRING_ERROR_UL;
break;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS */
default:
{
JERRY_ASSERT (builtin_id == ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
class_name = ECMA_MAGIC_STRING_FUNCTION_UL;
break;
}
}
}
else
{
class_name = ECMA_MAGIC_STRING_FUNCTION_UL;
}
return class_name;
}
case ECMA_OBJECT_TYPE_BOUND_FUNCTION:
case ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION:
case ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION:
{
return ECMA_MAGIC_STRING_FUNCTION_UL;
}
default:
{
JERRY_ASSERT (type == ECMA_OBJECT_TYPE_GENERAL);
if (ecma_get_object_is_builtin (obj_p))
{
ecma_property_t *built_in_id_prop_p = ecma_get_internal_property (obj_p,
ECMA_INTERNAL_PROPERTY_BUILT_IN_ID);
ecma_builtin_id_t builtin_id = (ecma_builtin_id_t) built_in_id_prop_p->u.internal_property.value;
switch (builtin_id)
{
case ECMA_BUILTIN_ID_OBJECT_PROTOTYPE:
{
return ECMA_MAGIC_STRING_OBJECT_UL;
}
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN
case ECMA_BUILTIN_ID_STRING_PROTOTYPE:
{
return ECMA_MAGIC_STRING_STRING_UL;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN
case ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE:
{
return ECMA_MAGIC_STRING_BOOLEAN_UL;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN
case ECMA_BUILTIN_ID_NUMBER_PROTOTYPE:
{
return ECMA_MAGIC_STRING_NUMBER_UL;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_MATH_BUILTIN
case ECMA_BUILTIN_ID_MATH:
{
return ECMA_MAGIC_STRING_MATH_UL;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_MATH_BUILTIN */
#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS
case ECMA_BUILTIN_ID_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_EVAL_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_RANGE_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_REFERENCE_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_SYNTAX_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_TYPE_ERROR_PROTOTYPE:
case ECMA_BUILTIN_ID_URI_ERROR_PROTOTYPE:
{
return ECMA_MAGIC_STRING_ERROR_UL;
}
#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_ERROR_BUILTINS */
default:
{
JERRY_ASSERT (ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_GLOBAL)
|| ecma_builtin_is (obj_p, ECMA_BUILTIN_ID_JERRY));
return ECMA_MAGIC_STRING_OBJECT_UL;
}
}
}
else
{
ecma_property_t *class_name_prop_p = ecma_find_internal_property (obj_p,
ECMA_INTERNAL_PROPERTY_CLASS);
if (class_name_prop_p == NULL)
{
return ECMA_MAGIC_STRING_OBJECT_UL;
}
else
{
return (ecma_magic_string_id_t) class_name_prop_p->u.internal_property.value;
}
}
}
}
} /* ecma_object_get_class_name */
/**
* @}