mirror of
https://github.com/jerryscript-project/jerryscript.git
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d803c3bc82
JerryScript-DCO-1.0-Signed-off-by: Szilard Ledan szledan.u-szeged@partner.samsung.com JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
633 lines
21 KiB
C++
633 lines
21 KiB
C++
/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecma-alloc.h"
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#include "ecma-builtins.h"
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#include "ecma-gc.h"
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#include "ecma-globals.h"
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#include "ecma-helpers.h"
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#include "ecma-objects.h"
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#include "jrt-bit-fields.h"
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#define ECMA_BUILTINS_INTERNAL
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#include "ecma-builtins-internal.h"
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/** \addtogroup ecma ECMA
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* @{
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*
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* \addtogroup ecmabuiltins
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* @{
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*/
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static ecma_completion_value_t
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ecma_builtin_dispatch_routine (ecma_builtin_id_t builtin_object_id,
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uint16_t builtin_routine_id,
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ecma_value_t this_arg_value,
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const ecma_value_t arguments_list[],
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ecma_length_t arguments_number);
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static void ecma_instantiate_builtin (ecma_builtin_id_t id);
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/**
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* Pointer to instances of built-in objects
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*/
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static ecma_object_t* ecma_builtin_objects[ECMA_BUILTIN_ID__COUNT];
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/**
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* Check if passed object is the instance of specified built-in.
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*/
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bool
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ecma_builtin_is (ecma_object_t *obj_p, /**< pointer to an object */
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ecma_builtin_id_t builtin_id) /**< id of built-in to check on */
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{
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JERRY_ASSERT (obj_p != NULL && !ecma_is_lexical_environment (obj_p));
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JERRY_ASSERT (builtin_id < ECMA_BUILTIN_ID__COUNT);
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if (ecma_builtin_objects[builtin_id] == NULL)
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{
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/* If a built-in object is not instantiated,
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* the specified object cannot be the built-in object */
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return false;
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}
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else
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{
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return (obj_p == ecma_builtin_objects[builtin_id]);
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}
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} /* ecma_builtin_is */
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/**
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* Get reference to specified built-in object
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*
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* @return pointer to the object's instance
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*/
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ecma_object_t*
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ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on */
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{
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JERRY_ASSERT (builtin_id < ECMA_BUILTIN_ID__COUNT);
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if (unlikely (ecma_builtin_objects[builtin_id] == NULL))
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{
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ecma_instantiate_builtin (builtin_id);
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}
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ecma_ref_object (ecma_builtin_objects[builtin_id]);
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return ecma_builtin_objects[builtin_id];
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} /* ecma_builtin_get */
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/**
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* Initialize specified built-in object.
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*
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* Warning:
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* the routine should be called only from ecma_init_builtins
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*
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* @return pointer to the object
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*/
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static ecma_object_t*
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ecma_builtin_init_object (ecma_builtin_id_t obj_builtin_id, /**< built-in ID */
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ecma_object_t* prototype_obj_p, /**< prototype object */
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ecma_object_type_t obj_type, /**< object's type */
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bool is_extensible) /**< value of object's [[Extensible]] property */
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{
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ecma_object_t *object_obj_p = ecma_create_object (prototype_obj_p, is_extensible, obj_type);
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/*
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* [[Class]] property of built-in object is not stored explicitly.
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*
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* See also: ecma_object_get_class_name
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*/
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ecma_property_t *built_in_id_prop_p = ecma_create_internal_property (object_obj_p,
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ECMA_INTERNAL_PROPERTY_BUILT_IN_ID);
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built_in_id_prop_p->u.internal_property.value = obj_builtin_id;
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ecma_set_object_is_builtin (object_obj_p, true);
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/** Initializing [[PrimitiveValue]] properties of built-in prototype objects */
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switch (obj_builtin_id)
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{
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#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN
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case ECMA_BUILTIN_ID_STRING_PROTOTYPE:
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{
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ecma_string_t *prim_prop_str_value_p = ecma_get_magic_string (ECMA_MAGIC_STRING__EMPTY);
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ecma_property_t *prim_value_prop_p;
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prim_value_prop_p = ecma_create_internal_property (object_obj_p,
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ECMA_INTERNAL_PROPERTY_PRIMITIVE_STRING_VALUE);
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ECMA_SET_POINTER (prim_value_prop_p->u.internal_property.value, prim_prop_str_value_p);
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break;
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}
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#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_STRING_BUILTIN */
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#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN
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case ECMA_BUILTIN_ID_NUMBER_PROTOTYPE:
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{
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ecma_number_t *prim_prop_num_value_p = ecma_alloc_number ();
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*prim_prop_num_value_p = ECMA_NUMBER_ZERO;
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ecma_property_t *prim_value_prop_p;
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prim_value_prop_p = ecma_create_internal_property (object_obj_p,
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ECMA_INTERNAL_PROPERTY_PRIMITIVE_NUMBER_VALUE);
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ECMA_SET_POINTER (prim_value_prop_p->u.internal_property.value, prim_prop_num_value_p);
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break;
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}
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#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_NUMBER_BUILTIN */
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#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN
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case ECMA_BUILTIN_ID_BOOLEAN_PROTOTYPE:
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{
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ecma_property_t *prim_value_prop_p;
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prim_value_prop_p = ecma_create_internal_property (object_obj_p,
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ECMA_INTERNAL_PROPERTY_PRIMITIVE_BOOLEAN_VALUE);
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prim_value_prop_p->u.internal_property.value = ECMA_SIMPLE_VALUE_FALSE;
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break;
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}
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#endif /* !CONFIG_ECMA_COMPACT_PROFILE_DISABLE_BOOLEAN_BUILTIN */
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#ifndef CONFIG_ECMA_COMPACT_PROFILE_DISABLE_DATE_BUILTIN
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case ECMA_BUILTIN_ID_DATE_PROTOTYPE:
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{
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ecma_number_t *prim_prop_num_value_p = ecma_alloc_number ();
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*prim_prop_num_value_p = ECMA_NUMBER_ZERO;
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ecma_property_t *prim_value_prop_p;
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prim_value_prop_p = ecma_create_internal_property (object_obj_p,
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ECMA_INTERNAL_PROPERTY_PRIMITIVE_NUMBER_VALUE);
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ECMA_SET_POINTER (prim_value_prop_p->u.internal_property.value, prim_prop_num_value_p);
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break;
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}
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#endif /* CONFIG_ECMA_COMPACT_PROFILE_DISABLE_DATE_BUILTIN */
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default:
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{
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break;
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}
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}
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return object_obj_p;
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} /* ecma_builtin_init_object */
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/**
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* Initialize ECMA built-ins components
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*/
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void
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ecma_init_builtins (void)
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{
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for (ecma_builtin_id_t id = (ecma_builtin_id_t) 0;
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id < ECMA_BUILTIN_ID__COUNT;
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id = (ecma_builtin_id_t) (id + 1))
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{
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ecma_builtin_objects[id] = NULL;
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}
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} /* ecma_init_builtins */
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/**
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* Instantiate specified ECMA built-in object
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*/
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static void
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ecma_instantiate_builtin (ecma_builtin_id_t id) /**< built-in id */
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{
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switch (id)
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{
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#define BUILTIN(builtin_id, \
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object_type, \
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object_prototype_builtin_id, \
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is_extensible, \
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is_static, \
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lowercase_name) \
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case builtin_id: \
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{ \
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JERRY_ASSERT (ecma_builtin_objects[builtin_id] == NULL); \
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if (is_static) \
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{ \
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ecma_builtin_ ## lowercase_name ## _sort_property_names (); \
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} \
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\
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ecma_object_t *prototype_obj_p; \
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if (object_prototype_builtin_id == ECMA_BUILTIN_ID__COUNT) \
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{ \
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prototype_obj_p = NULL; \
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} \
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else \
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{ \
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if (ecma_builtin_objects[object_prototype_builtin_id] == NULL) \
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{ \
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ecma_instantiate_builtin (object_prototype_builtin_id); \
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} \
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prototype_obj_p = ecma_builtin_objects[object_prototype_builtin_id]; \
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JERRY_ASSERT (prototype_obj_p != NULL); \
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} \
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\
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ecma_object_t *builtin_obj_p = ecma_builtin_init_object (builtin_id, \
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prototype_obj_p, \
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object_type, \
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is_extensible); \
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ecma_builtin_objects[builtin_id] = builtin_obj_p; \
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\
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break; \
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}
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#include "ecma-builtins.inc.h"
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default:
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{
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JERRY_ASSERT (id < ECMA_BUILTIN_ID__COUNT);
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JERRY_UNIMPLEMENTED ("The built-in is not implemented.");
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}
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}
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} /* ecma_instantiate_builtin */
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/**
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* Finalize ECMA built-in objects
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*/
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void
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ecma_finalize_builtins (void)
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{
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for (ecma_builtin_id_t id = (ecma_builtin_id_t) 0;
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id < ECMA_BUILTIN_ID__COUNT;
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id = (ecma_builtin_id_t) (id + 1))
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{
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if (ecma_builtin_objects[id] != NULL)
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{
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ecma_deref_object (ecma_builtin_objects[id]);
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ecma_builtin_objects[id] = NULL;
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}
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}
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} /* ecma_finalize_builtins */
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/**
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* If the property's name is one of built-in properties of the object
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* that is not instantiated yet, instantiate the property and
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* return pointer to the instantiated property.
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*
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* @return pointer property, if one was instantiated,
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* NULL - otherwise.
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*/
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ecma_property_t*
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ecma_builtin_try_to_instantiate_property (ecma_object_t *object_p, /**< object */
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ecma_string_t *string_p) /**< property's name */
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{
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JERRY_ASSERT (ecma_get_object_is_builtin (object_p));
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ecma_property_t *built_in_id_prop_p = ecma_get_internal_property (object_p,
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ECMA_INTERNAL_PROPERTY_BUILT_IN_ID);
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ecma_builtin_id_t builtin_id = (ecma_builtin_id_t) built_in_id_prop_p->u.internal_property.value;
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JERRY_ASSERT (ecma_builtin_is (object_p, builtin_id));
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switch (builtin_id)
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{
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#define BUILTIN(builtin_id, \
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object_type, \
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object_prototype_builtin_id, \
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is_extensible, \
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is_static, \
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lowercase_name) \
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case builtin_id: \
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{ \
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return ecma_builtin_ ## lowercase_name ## _try_to_instantiate_property (object_p, \
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string_p); \
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}
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#include "ecma-builtins.inc.h"
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case ECMA_BUILTIN_ID__COUNT:
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{
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JERRY_UNREACHABLE ();
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}
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default:
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{
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#ifdef CONFIG_ECMA_COMPACT_PROFILE
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JERRY_UNREACHABLE ();
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#else /* CONFIG_ECMA_COMPACT_PROFILE */
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JERRY_UNIMPLEMENTED ("The built-in is not implemented.");
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#endif /* !CONFIG_ECMA_COMPACT_PROFILE */
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}
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}
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JERRY_UNREACHABLE ();
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} /* ecma_builtin_try_to_instantiate_property */
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/**
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* Construct a Function object for specified built-in routine
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*
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* See also: ECMA-262 v5, 15
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*
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* @return pointer to constructed Function object
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*/
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ecma_object_t*
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ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**< identifier of built-in object
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that initially contains property
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with the routine */
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uint16_t routine_id, /**< builtin-wide identifier of the built-in
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object's routine property */
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ecma_number_t length_prop_num_value) /**< ecma-number - value
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of 'length' property
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of function object to create */
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{
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ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
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ecma_object_t *func_obj_p = ecma_create_object (prototype_obj_p, true, ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION);
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ecma_deref_object (prototype_obj_p);
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ecma_set_object_is_builtin (func_obj_p, true);
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uint64_t packed_value = jrt_set_bit_field_value (0,
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builtin_id,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_POS,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_WIDTH);
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packed_value = jrt_set_bit_field_value (packed_value,
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routine_id,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_POS,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_WIDTH);
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ecma_property_t *routine_id_prop_p = ecma_create_internal_property (func_obj_p,
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ECMA_INTERNAL_PROPERTY_BUILT_IN_ROUTINE_ID);
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JERRY_ASSERT ((uint32_t) packed_value == packed_value);
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routine_id_prop_p->u.internal_property.value = (uint32_t) packed_value;
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ecma_string_t* magic_string_length_p = ecma_get_magic_string (ECMA_MAGIC_STRING_LENGTH);
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ecma_property_t *len_prop_p = ecma_create_named_data_property (func_obj_p,
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magic_string_length_p,
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false, false, false);
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ecma_deref_ecma_string (magic_string_length_p);
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ecma_number_t* len_p = ecma_alloc_number ();
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*len_p = length_prop_num_value;
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ecma_set_named_data_property_value (len_prop_p, ecma_make_number_value (len_p));
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return func_obj_p;
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} /* ecma_builtin_make_function_object_for_routine */
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/**
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* Handle calling [[Call]] of built-in object
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*
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* @return completion-value
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*/
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ecma_completion_value_t
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ecma_builtin_dispatch_call (ecma_object_t *obj_p, /**< built-in object */
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ecma_value_t this_arg_value, /**< 'this' argument value */
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const ecma_value_t *arguments_list_p, /**< arguments list */
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ecma_length_t arguments_list_len) /**< length of the arguments list */
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{
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JERRY_ASSERT (ecma_get_object_is_builtin (obj_p));
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JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
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if (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION)
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{
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ecma_property_t *id_prop_p = ecma_get_internal_property (obj_p,
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ECMA_INTERNAL_PROPERTY_BUILT_IN_ROUTINE_ID);
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uint64_t packed_built_in_and_routine_id = id_prop_p->u.internal_property.value;
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uint64_t built_in_id_field = jrt_extract_bit_field (packed_built_in_and_routine_id,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_POS,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_WIDTH);
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JERRY_ASSERT (built_in_id_field < ECMA_BUILTIN_ID__COUNT);
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uint64_t routine_id_field = jrt_extract_bit_field (packed_built_in_and_routine_id,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_POS,
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ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_WIDTH);
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JERRY_ASSERT ((uint16_t) routine_id_field == routine_id_field);
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ecma_builtin_id_t built_in_id = (ecma_builtin_id_t) built_in_id_field;
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uint16_t routine_id = (uint16_t) routine_id_field;
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return ecma_builtin_dispatch_routine (built_in_id,
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routine_id,
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this_arg_value,
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arguments_list_p,
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arguments_list_len);
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}
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else
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{
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JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_FUNCTION);
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ecma_property_t *built_in_id_prop_p = ecma_get_internal_property (obj_p,
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ECMA_INTERNAL_PROPERTY_BUILT_IN_ID);
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ecma_builtin_id_t builtin_id = (ecma_builtin_id_t) built_in_id_prop_p->u.internal_property.value;
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JERRY_ASSERT (ecma_builtin_is (obj_p, builtin_id));
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switch (builtin_id)
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{
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#define BUILTIN(builtin_id, \
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object_type, \
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object_prototype_builtin_id, \
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is_extensible, \
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is_static, \
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lowercase_name) \
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case builtin_id: \
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{ \
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if (object_type == ECMA_OBJECT_TYPE_FUNCTION) \
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{ \
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return ecma_builtin_ ## lowercase_name ## _dispatch_call (arguments_list_p, \
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arguments_list_len); \
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} \
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else \
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{ \
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JERRY_UNREACHABLE (); \
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} \
|
|
}
|
|
#include "ecma-builtins.inc.h"
|
|
|
|
case ECMA_BUILTIN_ID__COUNT:
|
|
{
|
|
JERRY_UNREACHABLE ();
|
|
}
|
|
|
|
default:
|
|
{
|
|
#ifdef CONFIG_ECMA_COMPACT_PROFILE
|
|
JERRY_UNREACHABLE ();
|
|
#else /* CONFIG_ECMA_COMPACT_PROFILE */
|
|
JERRY_UNIMPLEMENTED ("The built-in is not implemented.");
|
|
#endif /* !CONFIG_ECMA_COMPACT_PROFILE */
|
|
}
|
|
}
|
|
}
|
|
|
|
JERRY_UNREACHABLE ();
|
|
} /* ecma_builtin_dispatch_call */
|
|
|
|
/**
|
|
* Handle calling [[Construct]] of built-in object
|
|
*
|
|
* @return completion-value
|
|
*/
|
|
ecma_completion_value_t
|
|
ecma_builtin_dispatch_construct (ecma_object_t *obj_p, /**< built-in object */
|
|
const ecma_value_t *arguments_list_p, /**< arguments list */
|
|
ecma_length_t arguments_list_len) /**< length of the arguments list */
|
|
{
|
|
JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_FUNCTION);
|
|
|
|
JERRY_ASSERT (ecma_get_object_is_builtin (obj_p));
|
|
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
|
|
|
|
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;
|
|
|
|
JERRY_ASSERT (ecma_builtin_is (obj_p, builtin_id));
|
|
|
|
switch (builtin_id)
|
|
{
|
|
#define BUILTIN(builtin_id, \
|
|
object_type, \
|
|
object_prototype_builtin_id, \
|
|
is_extensible, \
|
|
is_static, \
|
|
lowercase_name) \
|
|
case builtin_id: \
|
|
{ \
|
|
if (object_type == ECMA_OBJECT_TYPE_FUNCTION) \
|
|
{ \
|
|
return ecma_builtin_ ## lowercase_name ## _dispatch_construct (arguments_list_p, \
|
|
arguments_list_len); \
|
|
} \
|
|
else \
|
|
{ \
|
|
JERRY_UNREACHABLE (); \
|
|
} \
|
|
}
|
|
#include "ecma-builtins.inc.h"
|
|
|
|
case ECMA_BUILTIN_ID__COUNT:
|
|
{
|
|
JERRY_UNREACHABLE ();
|
|
}
|
|
|
|
default:
|
|
{
|
|
#ifdef CONFIG_ECMA_COMPACT_PROFILE
|
|
JERRY_UNREACHABLE ();
|
|
#else /* CONFIG_ECMA_COMPACT_PROFILE */
|
|
JERRY_UNIMPLEMENTED ("The built-in is not implemented.");
|
|
#endif /* !CONFIG_ECMA_COMPACT_PROFILE */
|
|
}
|
|
}
|
|
|
|
JERRY_UNREACHABLE ();
|
|
} /* ecma_builtin_dispatch_construct */
|
|
|
|
/**
|
|
* Dispatcher of built-in routines
|
|
*
|
|
* @return completion-value
|
|
* Returned value must be freed with ecma_free_completion_value.
|
|
*/
|
|
static ecma_completion_value_t
|
|
ecma_builtin_dispatch_routine (ecma_builtin_id_t builtin_object_id, /**< built-in object' identifier */
|
|
uint16_t builtin_routine_id, /**< builtin-wide identifier
|
|
* of the built-in object's
|
|
* routine property */
|
|
ecma_value_t this_arg_value, /**< 'this' argument value */
|
|
const ecma_value_t arguments_list[], /**< list of arguments passed to routine */
|
|
ecma_length_t arguments_number) /**< length of arguments' list */
|
|
{
|
|
switch (builtin_object_id)
|
|
{
|
|
#define BUILTIN(builtin_id, \
|
|
object_type, \
|
|
object_prototype_builtin_id, \
|
|
is_extensible, \
|
|
is_static, \
|
|
lowercase_name) \
|
|
case builtin_id: \
|
|
{ \
|
|
return ecma_builtin_ ## lowercase_name ## _dispatch_routine (builtin_routine_id, \
|
|
this_arg_value, \
|
|
arguments_list, \
|
|
arguments_number); \
|
|
}
|
|
#include "ecma-builtins.inc.h"
|
|
|
|
case ECMA_BUILTIN_ID__COUNT:
|
|
{
|
|
JERRY_UNREACHABLE ();
|
|
}
|
|
|
|
default:
|
|
{
|
|
#ifdef CONFIG_ECMA_COMPACT_PROFILE
|
|
JERRY_UNREACHABLE ();
|
|
#else /* CONFIG_ECMA_COMPACT_PROFILE */
|
|
JERRY_UNIMPLEMENTED ("The built-in is not implemented.");
|
|
#endif /* !CONFIG_ECMA_COMPACT_PROFILE */
|
|
}
|
|
}
|
|
|
|
JERRY_UNREACHABLE ();
|
|
} /* ecma_builtin_dispatch_routine */
|
|
|
|
/**
|
|
* Binary search for magic string identifier in array.
|
|
*
|
|
* Warning:
|
|
* array should be sorted in ascending order
|
|
*
|
|
* @return index of identifier, if it is contained in array,
|
|
* -1 - otherwise.
|
|
*/
|
|
int32_t
|
|
ecma_builtin_bin_search_for_magic_string_id_in_array (const ecma_magic_string_id_t ids[], /**< array to search in */
|
|
ecma_length_t array_length, /**< number of elements
|
|
in the array */
|
|
ecma_magic_string_id_t key) /**< value to search for */
|
|
{
|
|
#ifndef JERRY_NDEBUG
|
|
/* For binary search the values should be sorted */
|
|
for (ecma_length_t id_index = 1;
|
|
id_index < array_length;
|
|
id_index++)
|
|
{
|
|
JERRY_ASSERT (ids[id_index - 1] < ids[id_index]);
|
|
}
|
|
#endif /* !JERRY_NDEBUG */
|
|
|
|
int32_t min = 0;
|
|
int32_t max = array_length - 1;
|
|
|
|
while (min <= max)
|
|
{
|
|
int32_t mid = (min + max) / 2;
|
|
|
|
if (ids[mid] == key)
|
|
{
|
|
return mid;
|
|
}
|
|
else if (ids[mid] > key)
|
|
{
|
|
max = mid - 1;
|
|
}
|
|
else
|
|
{
|
|
JERRY_ASSERT (ids[mid] < key);
|
|
|
|
min = mid + 1;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
} /* ecma_builtin_bin_search_for_magic_string_id_in_array */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|