mirror of
https://github.com/jerryscript-project/jerryscript.git
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1163 lines
34 KiB
C
1163 lines
34 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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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-gc.h"
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#include "ecma-globals.h"
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#include "ecma-helpers.h"
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#include "jrt.h"
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#include "jrt-bit-fields.h"
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#include "vm-defines.h"
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#include "ecma-function-object.h"
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JERRY_STATIC_ASSERT (ECMA_TYPE___MAX <= ECMA_VALUE_TYPE_MASK,
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ecma_types_must_be_less_than_mask);
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JERRY_STATIC_ASSERT ((ECMA_VALUE_TYPE_MASK + 1) == (1 << ECMA_VALUE_SHIFT),
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ecma_value_part_must_start_after_flags);
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JERRY_STATIC_ASSERT (ECMA_VALUE_SHIFT <= JMEM_ALIGNMENT_LOG,
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ecma_value_shift_must_be_less_than_or_equal_than_mem_alignment_log);
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JERRY_STATIC_ASSERT (sizeof (jmem_cpointer_t) <= sizeof (ecma_value_t),
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size_of_jmem_cpointer_t_must_be_less_or_equal_to_the_size_of_ecma_value_t);
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#ifdef ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY
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JERRY_STATIC_ASSERT (sizeof (uintptr_t) <= sizeof (ecma_value_t),
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uintptr_t_must_fit_in_ecma_value_t);
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#else /* !ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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JERRY_STATIC_ASSERT (sizeof (uintptr_t) > sizeof (ecma_value_t),
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uintptr_t_must_not_fit_in_ecma_value_t);
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#endif /* ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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JERRY_STATIC_ASSERT ((ECMA_VALUE_FALSE | (1 << ECMA_DIRECT_SHIFT)) == ECMA_VALUE_TRUE
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&& ECMA_VALUE_FALSE != ECMA_VALUE_TRUE,
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only_the_lowest_bit_must_be_different_for_simple_value_true_and_false);
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/** \addtogroup ecma ECMA
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* @{
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*
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* \addtogroup ecmahelpers Helpers for operations with ECMA data types
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* @{
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*/
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/**
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* Get type field of ecma value
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*
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* @return type field
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*/
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extern inline ecma_type_t JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_get_value_type_field (ecma_value_t value) /**< ecma value */
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{
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return value & ECMA_VALUE_TYPE_MASK;
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} /* ecma_get_value_type_field */
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/**
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* Convert a pointer into an ecma value.
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*
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* @return ecma value
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*/
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static inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
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ecma_pointer_to_ecma_value (const void *ptr) /**< pointer */
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{
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#ifdef ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY
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JERRY_ASSERT (ptr != NULL);
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uintptr_t uint_ptr = (uintptr_t) ptr;
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JERRY_ASSERT ((uint_ptr & ECMA_VALUE_TYPE_MASK) == 0);
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return (ecma_value_t) uint_ptr;
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#else /* !ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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jmem_cpointer_t ptr_cp;
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ECMA_SET_NON_NULL_POINTER (ptr_cp, ptr);
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return ((ecma_value_t) ptr_cp) << ECMA_VALUE_SHIFT;
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#endif /* ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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} /* ecma_pointer_to_ecma_value */
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/**
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* Get a pointer from an ecma value
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*
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* @return pointer
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*/
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static inline void * JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
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ecma_get_pointer_from_ecma_value (ecma_value_t value) /**< value */
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{
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#ifdef ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY
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void *ptr = (void *) (uintptr_t) ((value) & ~ECMA_VALUE_TYPE_MASK);
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JERRY_ASSERT (ptr != NULL);
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return ptr;
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#else /* !ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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return ECMA_GET_NON_NULL_POINTER (void, value >> ECMA_VALUE_SHIFT);
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#endif /* ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
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} /* ecma_get_pointer_from_ecma_value */
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/**
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* Check if the value is direct ecma-value.
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*
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* @return true - if the value is a direct value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_direct (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT);
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} /* ecma_is_value_direct */
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/**
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* Check if the value is simple ecma-value.
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*
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* @return true - if the value is a simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_simple (ecma_value_t value) /**< ecma value */
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{
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return (value & ECMA_DIRECT_TYPE_MASK) == ECMA_DIRECT_TYPE_SIMPLE_VALUE;
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} /* ecma_is_value_simple */
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/**
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* Check whether the value is a given simple value.
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*
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* @return true - if the value is equal to the given simple value,
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* false - otherwise
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*/
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static inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_equal_to_simple_value (ecma_value_t value, /**< ecma value */
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ecma_value_t simple_value) /**< simple value */
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{
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return value == simple_value;
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} /* ecma_is_value_equal_to_simple_value */
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/**
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* Check if the value is empty.
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*
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* @return true - if the value contains implementation-defined empty simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_empty (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_EMPTY);
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} /* ecma_is_value_empty */
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/**
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* Check if the value is undefined.
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*
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* @return true - if the value contains ecma-undefined simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_undefined (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_UNDEFINED);
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} /* ecma_is_value_undefined */
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/**
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* Check if the value is null.
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*
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* @return true - if the value contains ecma-null simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_null (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_NULL);
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} /* ecma_is_value_null */
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/**
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* Check if the value is boolean.
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*
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* @return true - if the value contains ecma-true or ecma-false simple values,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_boolean (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_true (value | (1 << ECMA_DIRECT_SHIFT));
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} /* ecma_is_value_boolean */
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/**
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* Check if the value is true.
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*
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* @return true - if the value contains ecma-true simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_true (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_TRUE);
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} /* ecma_is_value_true */
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/**
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* Check if the value is false.
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*
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* @return true - if the value contains ecma-false simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_false (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_FALSE);
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} /* ecma_is_value_false */
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/**
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* Check if the value is not found.
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*
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* @return true - if the value contains ecma-not-found simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_found (ecma_value_t value) /**< ecma value */
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{
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return value != ECMA_VALUE_NOT_FOUND;
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} /* ecma_is_value_found */
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/**
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* Check if the value is array hole.
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*
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* @return true - if the value contains ecma-array-hole simple value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_array_hole (ecma_value_t value) /**< ecma value */
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{
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return ecma_is_value_equal_to_simple_value (value, ECMA_VALUE_ARRAY_HOLE);
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} /* ecma_is_value_array_hole */
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/**
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* Check if the value is integer ecma-number.
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*
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* @return true - if the value contains an integer ecma-number value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_integer_number (ecma_value_t value) /**< ecma value */
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{
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return (value & ECMA_DIRECT_TYPE_MASK) == ECMA_DIRECT_TYPE_INTEGER_VALUE;
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} /* ecma_is_value_integer_number */
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/**
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* Check if both values are integer ecma-numbers.
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*
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* @return true - if both values contain integer ecma-number values,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_are_values_integer_numbers (ecma_value_t first_value, /**< first ecma value */
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ecma_value_t second_value) /**< second ecma value */
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{
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JERRY_STATIC_ASSERT (ECMA_DIRECT_TYPE_INTEGER_VALUE == 0,
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ecma_direct_type_integer_value_must_be_zero);
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return ((first_value | second_value) & ECMA_DIRECT_TYPE_MASK) == ECMA_DIRECT_TYPE_INTEGER_VALUE;
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} /* ecma_are_values_integer_numbers */
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/**
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* Check if the value is floating-point ecma-number.
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*
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* @return true - if the value contains a floating-point ecma-number value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_float_number (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_FLOAT);
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} /* ecma_is_value_float_number */
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/**
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* Check if the value is ecma-number.
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*
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* @return true - if the value contains ecma-number value,
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* false - otherwise
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*/
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extern inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_number (ecma_value_t value) /**< ecma value */
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{
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return (ecma_is_value_integer_number (value)
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|| ecma_is_value_float_number (value));
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} /* ecma_is_value_number */
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JERRY_STATIC_ASSERT ((ECMA_TYPE_STRING | 0x4) == ECMA_TYPE_DIRECT_STRING,
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ecma_type_string_and_direct_string_must_have_one_bit_difference);
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/**
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* Check if the value is ecma-string.
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*
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* @return true - if the value contains ecma-string value,
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* false - otherwise
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*/
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extern inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_string (ecma_value_t value) /**< ecma value */
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{
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return ((value & (ECMA_VALUE_TYPE_MASK - 0x4)) == ECMA_TYPE_STRING);
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} /* ecma_is_value_string */
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#if ENABLED (JERRY_ES2015)
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/**
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* Check if the value is symbol.
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*
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* @return true - if the value contains symbol value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_symbol (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_SYMBOL);
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} /* ecma_is_value_symbol */
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#endif /* ENABLED (JERRY_ES2015) */
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/**
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* Check if the value can be property name.
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*
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* @return true - if the value can be property name value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_prop_name (ecma_value_t value) /**< ecma value */
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{
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#if ENABLED (JERRY_ES2015)
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return ecma_is_value_string (value) || ecma_is_value_symbol (value);
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#else /* !ENABLED (JERRY_ES2015) */
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return ecma_is_value_string (value);
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#endif /* ENABLED (JERRY_ES2015) */
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} /* ecma_is_value_prop_name */
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/**
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* Check if the value is direct ecma-string.
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*
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* @return true - if the value contains direct ecma-string value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_direct_string (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT_STRING);
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} /* ecma_is_value_direct_string */
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/**
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* Check if the value is non-direct ecma-string.
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*
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* @return true - if the value contains non-direct ecma-string value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_non_direct_string (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_STRING);
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} /* ecma_is_value_non_direct_string */
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/**
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* Check if the value is object.
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*
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* @return true - if the value contains object value,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_object (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_OBJECT);
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} /* ecma_is_value_object */
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/**
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* Check if the value is error reference.
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*
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* @return true - if the value contains an error reference,
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_error_reference (ecma_value_t value) /**< ecma value */
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{
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return (ecma_get_value_type_field (value) == ECMA_TYPE_ERROR);
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} /* ecma_is_value_error_reference */
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/**
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* Debug assertion that specified value's type is one of ECMA-defined
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* script-visible types, i.e.: undefined, null, boolean, number, string, object.
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*/
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void
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ecma_check_value_type_is_spec_defined (ecma_value_t value) /**< ecma value */
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{
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JERRY_ASSERT (ecma_is_value_undefined (value)
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|| ecma_is_value_null (value)
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|| ecma_is_value_boolean (value)
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|| ecma_is_value_number (value)
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|| ecma_is_value_string (value)
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|| ECMA_ASSERT_VALUE_IS_SYMBOL (value)
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|| ecma_is_value_object (value));
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} /* ecma_check_value_type_is_spec_defined */
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/**
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* Checks if the given argument is an array or not.
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*
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* @return true - if the given argument is an array object
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* false - otherwise
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*/
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inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_is_value_array (ecma_value_t arg) /**< argument */
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{
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return (ecma_is_value_object (arg)
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&& ecma_get_object_type (ecma_get_object_from_value (arg)) == ECMA_OBJECT_TYPE_ARRAY);
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} /* ecma_is_value_array */
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/**
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* Creates an ecma value from the given raw boolean.
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*
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* @return boolean ecma_value
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*/
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inline ecma_value_t JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_make_boolean_value (bool boolean_value) /**< raw bool value from which the ecma value will be created */
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{
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return boolean_value ? ECMA_VALUE_TRUE : ECMA_VALUE_FALSE;
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} /* ecma_make_boolean_value */
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/**
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* Encode an integer number into an ecma-value without allocating memory
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*
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* Note:
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* The value must fit into the range of allowed ecma integer values
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*
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* @return ecma-value
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*/
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inline ecma_value_t JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
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ecma_make_integer_value (ecma_integer_value_t integer_value) /**< integer number to be encoded */
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{
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JERRY_ASSERT (ECMA_IS_INTEGER_NUMBER (integer_value));
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return (((ecma_value_t) integer_value) << ECMA_DIRECT_SHIFT) | ECMA_DIRECT_TYPE_INTEGER_VALUE;
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} /* ecma_make_integer_value */
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/**
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* Allocate and initialize a new float number without checks.
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*
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* @return ecma-value
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*/
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static ecma_value_t
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ecma_create_float_number (ecma_number_t ecma_number) /**< value of the float number */
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{
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ecma_number_t *ecma_num_p = ecma_alloc_number ();
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|
|
*ecma_num_p = ecma_number;
|
|
|
|
return ecma_pointer_to_ecma_value (ecma_num_p) | ECMA_TYPE_FLOAT;
|
|
} /* ecma_create_float_number */
|
|
|
|
/**
|
|
* Encode float number without checks.
|
|
*
|
|
* @return ecma-value
|
|
*/
|
|
ecma_value_t
|
|
ecma_make_float_value (ecma_number_t *ecma_num_p) /**< pointer to the float number */
|
|
{
|
|
return ecma_pointer_to_ecma_value (ecma_num_p) | ECMA_TYPE_FLOAT;
|
|
} /* ecma_make_float_value */
|
|
|
|
/**
|
|
* Create a new NaN value.
|
|
*
|
|
* @return ecma-value
|
|
*/
|
|
extern inline ecma_value_t JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_nan_value (void)
|
|
{
|
|
return ecma_create_float_number (ecma_number_make_nan ());
|
|
} /* ecma_make_nan_value */
|
|
|
|
/**
|
|
* Checks whether the passed number is +0.0
|
|
*
|
|
* @return true, if it is +0.0, false otherwise
|
|
*/
|
|
static inline bool JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_is_number_equal_to_positive_zero (ecma_number_t ecma_number) /**< number */
|
|
{
|
|
ecma_number_accessor_t u;
|
|
u.as_ecma_number_t = ecma_number;
|
|
#if !ENABLED (JERRY_NUMBER_TYPE_FLOAT64)
|
|
return u.as_uint32_t == 0;
|
|
#else /* ENABLED (JERRY_NUMBER_TYPE_FLOAT64) */
|
|
return u.as_uint64_t == 0;
|
|
#endif /* !ENABLED (JERRY_NUMBER_TYPE_FLOAT64) */
|
|
} /* ecma_is_number_equal_to_positive_zero */
|
|
|
|
/**
|
|
* Encode a number into an ecma-value
|
|
*
|
|
* @return ecma-value
|
|
*/
|
|
ecma_value_t
|
|
ecma_make_number_value (ecma_number_t ecma_number) /**< number to be encoded */
|
|
{
|
|
ecma_integer_value_t integer_value = (ecma_integer_value_t) ecma_number;
|
|
|
|
if ((ecma_number_t) integer_value == ecma_number
|
|
&& ((integer_value == 0) ? ecma_is_number_equal_to_positive_zero (ecma_number)
|
|
: ECMA_IS_INTEGER_NUMBER (integer_value)))
|
|
{
|
|
return ecma_make_integer_value (integer_value);
|
|
}
|
|
|
|
return ecma_create_float_number (ecma_number);
|
|
} /* ecma_make_number_value */
|
|
|
|
/**
|
|
* Encode an int32 number into an ecma-value
|
|
*
|
|
* @return ecma-value
|
|
*/
|
|
ecma_value_t
|
|
ecma_make_int32_value (int32_t int32_number) /**< int32 number to be encoded */
|
|
{
|
|
if (ECMA_IS_INTEGER_NUMBER (int32_number))
|
|
{
|
|
return ecma_make_integer_value ((ecma_integer_value_t) int32_number);
|
|
}
|
|
|
|
return ecma_create_float_number ((ecma_number_t) int32_number);
|
|
} /* ecma_make_int32_value */
|
|
|
|
/**
|
|
* Encode an unsigned int32 number into an ecma-value
|
|
*
|
|
* @return ecma-value
|
|
*/
|
|
ecma_value_t
|
|
ecma_make_uint32_value (uint32_t uint32_number) /**< uint32 number to be encoded */
|
|
{
|
|
if (uint32_number <= ECMA_INTEGER_NUMBER_MAX)
|
|
{
|
|
return ecma_make_integer_value ((ecma_integer_value_t) uint32_number);
|
|
}
|
|
|
|
return ecma_create_float_number ((ecma_number_t) uint32_number);
|
|
} /* ecma_make_uint32_value */
|
|
|
|
/**
|
|
* String value constructor
|
|
*
|
|
* @return ecma-value representation of the string argument
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_string_value (const ecma_string_t *ecma_string_p) /**< string to reference in value */
|
|
{
|
|
JERRY_ASSERT (ecma_string_p != NULL);
|
|
#if ENABLED (JERRY_ES2015)
|
|
JERRY_ASSERT (!ecma_prop_name_is_symbol ((ecma_string_t *) ecma_string_p));
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
|
|
if ((((uintptr_t) ecma_string_p) & ECMA_VALUE_TYPE_MASK) != 0)
|
|
{
|
|
return (ecma_value_t) (uintptr_t) ecma_string_p;
|
|
}
|
|
|
|
return ecma_pointer_to_ecma_value (ecma_string_p) | ECMA_TYPE_STRING;
|
|
} /* ecma_make_string_value */
|
|
|
|
#if ENABLED (JERRY_ES2015)
|
|
/**
|
|
* Symbol value constructor
|
|
*
|
|
* @return ecma-value representation of the string argument
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_symbol_value (const ecma_string_t *ecma_symbol_p) /**< symbol to reference in value */
|
|
{
|
|
JERRY_ASSERT (ecma_symbol_p != NULL);
|
|
JERRY_ASSERT (ecma_prop_name_is_symbol ((ecma_string_t *) ecma_symbol_p));
|
|
|
|
return ecma_pointer_to_ecma_value (ecma_symbol_p) | ECMA_TYPE_SYMBOL;
|
|
} /* ecma_make_symbol_value */
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
|
|
/**
|
|
* Property-name value constructor
|
|
*
|
|
* @return ecma-value representation of a property name argument
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_prop_name_value (const ecma_string_t *ecma_prop_name_p) /**< property name to reference in value */
|
|
{
|
|
JERRY_ASSERT (ecma_prop_name_p != NULL);
|
|
|
|
#if ENABLED (JERRY_ES2015)
|
|
if (ecma_prop_name_is_symbol ((ecma_string_t *) ecma_prop_name_p))
|
|
{
|
|
return ecma_make_symbol_value (ecma_prop_name_p);
|
|
}
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
|
|
return ecma_make_string_value (ecma_prop_name_p);
|
|
} /* ecma_make_prop_name_value */
|
|
|
|
/**
|
|
* String value constructor
|
|
*
|
|
* @return ecma-value representation of the string argument
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_magic_string_value (lit_magic_string_id_t id) /**< magic string id */
|
|
{
|
|
return (ecma_value_t) ECMA_CREATE_DIRECT_STRING (ECMA_DIRECT_STRING_MAGIC, (uintptr_t) id);
|
|
} /* ecma_make_magic_string_value */
|
|
|
|
/**
|
|
* Object value constructor
|
|
*
|
|
* @return ecma-value representation of the object argument
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_object_value (const ecma_object_t *object_p) /**< object to reference in value */
|
|
{
|
|
JERRY_ASSERT (object_p != NULL);
|
|
|
|
return ecma_pointer_to_ecma_value (object_p) | ECMA_TYPE_OBJECT;
|
|
} /* ecma_make_object_value */
|
|
|
|
/**
|
|
* Error reference constructor
|
|
*
|
|
* @return ecma-value representation of the Error reference
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_make_error_reference_value (const ecma_error_reference_t *error_ref_p) /**< error reference */
|
|
{
|
|
JERRY_ASSERT (error_ref_p != NULL);
|
|
|
|
return ecma_pointer_to_ecma_value (error_ref_p) | ECMA_TYPE_ERROR;
|
|
} /* ecma_make_error_reference_value */
|
|
|
|
/**
|
|
* Get integer value from an integer ecma value
|
|
*
|
|
* @return integer value
|
|
*/
|
|
inline ecma_integer_value_t JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_integer_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_integer_number (value));
|
|
|
|
return ((ecma_integer_value_t) value) >> ECMA_DIRECT_SHIFT;
|
|
} /* ecma_get_integer_from_value */
|
|
|
|
/**
|
|
* Get floating point value from an ecma value
|
|
*
|
|
* @return floating point value
|
|
*/
|
|
inline ecma_number_t JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_float_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_FLOAT);
|
|
|
|
return *(ecma_number_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_float_from_value */
|
|
|
|
/**
|
|
* Get floating point value pointer from an ecma value
|
|
*
|
|
* @return floating point value
|
|
*/
|
|
inline ecma_number_t * JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_pointer_from_float_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_FLOAT);
|
|
|
|
return (ecma_number_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_pointer_from_float_value */
|
|
|
|
/**
|
|
* Get floating point value from an ecma value
|
|
*
|
|
* @return floating point value
|
|
*/
|
|
ecma_number_t JERRY_ATTR_PURE
|
|
ecma_get_number_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
if (ecma_is_value_integer_number (value))
|
|
{
|
|
return (ecma_number_t) ecma_get_integer_from_value (value);
|
|
}
|
|
|
|
return ecma_get_float_from_value (value);
|
|
} /* ecma_get_number_from_value */
|
|
|
|
/**
|
|
* Get pointer to ecma-string from ecma value
|
|
*
|
|
* @return the string pointer
|
|
*/
|
|
inline ecma_string_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_string_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_string (value));
|
|
|
|
if ((value & ECMA_VALUE_TYPE_MASK) == ECMA_TYPE_DIRECT_STRING)
|
|
{
|
|
return (ecma_string_t *) (uintptr_t) value;
|
|
}
|
|
|
|
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_string_from_value */
|
|
|
|
#if ENABLED (JERRY_ES2015)
|
|
/**
|
|
* Get pointer to ecma-string from ecma value
|
|
*
|
|
* @return the string pointer
|
|
*/
|
|
inline ecma_string_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_symbol_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_symbol (value));
|
|
|
|
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_symbol_from_value */
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
|
|
/**
|
|
* Get pointer to a property name from ecma value
|
|
*
|
|
* @return the string pointer
|
|
*/
|
|
inline ecma_string_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_prop_name_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_prop_name (value));
|
|
|
|
if ((value & ECMA_VALUE_TYPE_MASK) == ECMA_TYPE_DIRECT_STRING)
|
|
{
|
|
return (ecma_string_t *) (uintptr_t) value;
|
|
}
|
|
|
|
return (ecma_string_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_prop_name_from_value */
|
|
|
|
/**
|
|
* Get pointer to ecma-object from ecma value
|
|
*
|
|
* @return the pointer
|
|
*/
|
|
inline ecma_object_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_object_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_object (value));
|
|
|
|
return (ecma_object_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_object_from_value */
|
|
|
|
/**
|
|
* Get pointer to error reference from ecma value
|
|
*
|
|
* @return the pointer
|
|
*/
|
|
inline ecma_error_reference_t *JERRY_ATTR_PURE JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_get_error_reference_from_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_ERROR);
|
|
|
|
return (ecma_error_reference_t *) ecma_get_pointer_from_ecma_value (value);
|
|
} /* ecma_get_error_reference_from_value */
|
|
|
|
/**
|
|
* Invert a boolean value
|
|
*
|
|
* @return ecma value
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_CONST JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_invert_boolean_value (ecma_value_t value) /**< ecma value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_boolean (value));
|
|
|
|
return (value ^ (1 << ECMA_DIRECT_SHIFT));
|
|
} /* ecma_invert_boolean_value */
|
|
|
|
/**
|
|
* Copy ecma value.
|
|
*
|
|
* @return copy of the given value
|
|
*/
|
|
ecma_value_t
|
|
ecma_copy_value (ecma_value_t value) /**< value description */
|
|
{
|
|
switch (ecma_get_value_type_field (value))
|
|
{
|
|
case ECMA_TYPE_FLOAT:
|
|
{
|
|
ecma_number_t *num_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (value);
|
|
|
|
return ecma_create_float_number (*num_p);
|
|
}
|
|
case ECMA_TYPE_STRING:
|
|
{
|
|
ecma_ref_ecma_string (ecma_get_string_from_value (value));
|
|
return value;
|
|
}
|
|
#if ENABLED (JERRY_ES2015)
|
|
case ECMA_TYPE_SYMBOL:
|
|
{
|
|
ecma_ref_ecma_string (ecma_get_symbol_from_value (value));
|
|
return value;
|
|
}
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
case ECMA_TYPE_OBJECT:
|
|
{
|
|
ecma_ref_object (ecma_get_object_from_value (value));
|
|
return value;
|
|
}
|
|
default:
|
|
{
|
|
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT
|
|
|| ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT_STRING);
|
|
|
|
return value;
|
|
}
|
|
}
|
|
} /* ecma_copy_value */
|
|
|
|
/**
|
|
* Copy ecma value.
|
|
*
|
|
* Note:
|
|
* this function is similar to ecma_copy_value, but it is
|
|
* faster for direct values since no function call is performed.
|
|
* It also increases the binary size so it is recommended for
|
|
* critical code paths only.
|
|
*
|
|
* @return copy of the given value
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_fast_copy_value (ecma_value_t value) /**< value description */
|
|
{
|
|
return (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT) ? value : ecma_copy_value (value);
|
|
} /* ecma_fast_copy_value */
|
|
|
|
/**
|
|
* Copy the ecma value if not an object
|
|
*
|
|
* @return copy of the given value
|
|
*/
|
|
inline ecma_value_t JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_copy_value_if_not_object (ecma_value_t value) /**< value description */
|
|
{
|
|
if (!ecma_is_value_object (value))
|
|
{
|
|
return ecma_copy_value (value);
|
|
}
|
|
|
|
return value;
|
|
} /* ecma_copy_value_if_not_object */
|
|
|
|
/**
|
|
* Increase reference counter of a value if it is an object.
|
|
*/
|
|
inline void JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_ref_if_object (ecma_value_t value) /**< value description */
|
|
{
|
|
if (ecma_is_value_object (value))
|
|
{
|
|
ecma_ref_object (ecma_get_object_from_value (value));
|
|
}
|
|
} /* ecma_ref_if_object */
|
|
|
|
/**
|
|
* Decrease reference counter of a value if it is an object.
|
|
*/
|
|
inline void JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_deref_if_object (ecma_value_t value) /**< value description */
|
|
{
|
|
if (ecma_is_value_object (value))
|
|
{
|
|
ecma_deref_object (ecma_get_object_from_value (value));
|
|
}
|
|
} /* ecma_deref_if_object */
|
|
|
|
/**
|
|
* Assign a new value to an ecma-value
|
|
*
|
|
* Note:
|
|
* value previously stored in the property is freed
|
|
*/
|
|
void
|
|
ecma_value_assign_value (ecma_value_t *value_p, /**< [in, out] ecma value */
|
|
ecma_value_t ecma_value) /**< value to assign */
|
|
{
|
|
JERRY_STATIC_ASSERT (ECMA_TYPE_DIRECT == 0,
|
|
ecma_type_direct_must_be_zero_for_the_next_check);
|
|
|
|
if (*value_p == ecma_value)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (ecma_get_value_type_field (ecma_value || *value_p) == ECMA_TYPE_DIRECT)
|
|
{
|
|
*value_p = ecma_value;
|
|
}
|
|
else if (ecma_is_value_float_number (ecma_value)
|
|
&& ecma_is_value_float_number (*value_p))
|
|
{
|
|
const ecma_number_t *num_src_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (ecma_value);
|
|
ecma_number_t *num_dst_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (*value_p);
|
|
|
|
*num_dst_p = *num_src_p;
|
|
}
|
|
else
|
|
{
|
|
ecma_free_value_if_not_object (*value_p);
|
|
*value_p = ecma_copy_value_if_not_object (ecma_value);
|
|
}
|
|
} /* ecma_value_assign_value */
|
|
|
|
/**
|
|
* Update the value of a float number to a new value
|
|
*
|
|
* Note:
|
|
* The original value is destroyed.
|
|
*
|
|
* @return updated ecma value
|
|
*/
|
|
ecma_value_t
|
|
ecma_update_float_number (ecma_value_t float_value, /**< original float value */
|
|
ecma_number_t new_number) /**< updated number value */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_float_number (float_value));
|
|
|
|
ecma_integer_value_t integer_number = (ecma_integer_value_t) new_number;
|
|
ecma_number_t *number_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (float_value);
|
|
|
|
if ((ecma_number_t) integer_number == new_number
|
|
&& ((integer_number == 0) ? ecma_is_number_equal_to_positive_zero (new_number)
|
|
: ECMA_IS_INTEGER_NUMBER (integer_number)))
|
|
{
|
|
ecma_dealloc_number (number_p);
|
|
return ecma_make_integer_value (integer_number);
|
|
}
|
|
|
|
*number_p = new_number;
|
|
return float_value;
|
|
} /* ecma_update_float_number */
|
|
|
|
/**
|
|
* Assign a float number to an ecma-value
|
|
*
|
|
* Note:
|
|
* value previously stored in the property is freed
|
|
*/
|
|
static void
|
|
ecma_value_assign_float_number (ecma_value_t *value_p, /**< [in, out] ecma value */
|
|
ecma_number_t ecma_number) /**< number to assign */
|
|
{
|
|
if (ecma_is_value_float_number (*value_p))
|
|
{
|
|
ecma_number_t *num_dst_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (*value_p);
|
|
|
|
*num_dst_p = ecma_number;
|
|
return;
|
|
}
|
|
|
|
if (ecma_get_value_type_field (*value_p) != ECMA_TYPE_DIRECT
|
|
&& ecma_get_value_type_field (*value_p) != ECMA_TYPE_OBJECT)
|
|
{
|
|
ecma_free_value (*value_p);
|
|
}
|
|
|
|
*value_p = ecma_create_float_number (ecma_number);
|
|
} /* ecma_value_assign_float_number */
|
|
|
|
/**
|
|
* Assign a number to an ecma-value
|
|
*
|
|
* Note:
|
|
* value previously stored in the property is freed
|
|
*/
|
|
void
|
|
ecma_value_assign_number (ecma_value_t *value_p, /**< [in, out] ecma value */
|
|
ecma_number_t ecma_number) /**< number to assign */
|
|
{
|
|
ecma_integer_value_t integer_value = (ecma_integer_value_t) ecma_number;
|
|
|
|
if ((ecma_number_t) integer_value == ecma_number
|
|
&& ((integer_value == 0) ? ecma_is_number_equal_to_positive_zero (ecma_number)
|
|
: ECMA_IS_INTEGER_NUMBER (integer_value)))
|
|
{
|
|
if (ecma_get_value_type_field (*value_p) != ECMA_TYPE_DIRECT
|
|
&& ecma_get_value_type_field (*value_p) != ECMA_TYPE_OBJECT)
|
|
{
|
|
ecma_free_value (*value_p);
|
|
}
|
|
*value_p = ecma_make_integer_value (integer_value);
|
|
return;
|
|
}
|
|
|
|
ecma_value_assign_float_number (value_p, ecma_number);
|
|
} /* ecma_value_assign_number */
|
|
|
|
/**
|
|
* Free the ecma value
|
|
*/
|
|
void
|
|
ecma_free_value (ecma_value_t value) /**< value description */
|
|
{
|
|
switch (ecma_get_value_type_field (value))
|
|
{
|
|
case ECMA_TYPE_FLOAT:
|
|
{
|
|
ecma_number_t *number_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (value);
|
|
ecma_dealloc_number (number_p);
|
|
break;
|
|
}
|
|
|
|
case ECMA_TYPE_STRING:
|
|
{
|
|
ecma_string_t *string_p = ecma_get_string_from_value (value);
|
|
ecma_deref_ecma_string (string_p);
|
|
break;
|
|
}
|
|
#if ENABLED (JERRY_ES2015)
|
|
case ECMA_TYPE_SYMBOL:
|
|
{
|
|
ecma_deref_ecma_string (ecma_get_symbol_from_value (value));
|
|
break;
|
|
}
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
case ECMA_TYPE_OBJECT:
|
|
{
|
|
ecma_deref_object (ecma_get_object_from_value (value));
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
JERRY_ASSERT (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT
|
|
|| ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT_STRING);
|
|
|
|
/* no memory is allocated */
|
|
break;
|
|
}
|
|
}
|
|
} /* ecma_free_value */
|
|
|
|
/**
|
|
* Free the ecma value
|
|
*
|
|
* Note:
|
|
* this function is similar to ecma_free_value, but it is
|
|
* faster for direct values since no function call is performed.
|
|
* It also increases the binary size so it is recommended for
|
|
* critical code paths only.
|
|
*/
|
|
inline void JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_fast_free_value (ecma_value_t value) /**< value description */
|
|
{
|
|
if (ecma_get_value_type_field (value) != ECMA_TYPE_DIRECT)
|
|
{
|
|
ecma_free_value (value);
|
|
}
|
|
} /* ecma_fast_free_value */
|
|
|
|
/**
|
|
* Free the ecma value if not an object
|
|
*/
|
|
void
|
|
ecma_free_value_if_not_object (ecma_value_t value) /**< value description */
|
|
{
|
|
if (ecma_get_value_type_field (value) != ECMA_TYPE_OBJECT)
|
|
{
|
|
ecma_free_value (value);
|
|
}
|
|
} /* ecma_free_value_if_not_object */
|
|
|
|
/**
|
|
* Free an ecma-value number
|
|
*/
|
|
inline void JERRY_ATTR_ALWAYS_INLINE
|
|
ecma_free_number (ecma_value_t value) /**< value description */
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_number (value));
|
|
|
|
if (ecma_is_value_float_number (value))
|
|
{
|
|
ecma_number_t *number_p = (ecma_number_t *) ecma_get_pointer_from_ecma_value (value);
|
|
ecma_dealloc_number (number_p);
|
|
}
|
|
} /* ecma_free_number */
|
|
|
|
/**
|
|
* Get the literal id associated with the given ecma_value type.
|
|
* This operation is equivalent to the JavaScript 'typeof' operator.
|
|
*
|
|
* @returns one of the following value:
|
|
* - LIT_MAGIC_STRING_UNDEFINED
|
|
* - LIT_MAGIC_STRING_OBJECT
|
|
* - LIT_MAGIC_STRING_BOOLEAN
|
|
* - LIT_MAGIC_STRING_NUMBER
|
|
* - LIT_MAGIC_STRING_STRING
|
|
* - LIT_MAGIC_STRING_FUNCTION
|
|
*/
|
|
lit_magic_string_id_t
|
|
ecma_get_typeof_lit_id (ecma_value_t value) /**< input ecma value */
|
|
{
|
|
lit_magic_string_id_t ret_value = LIT_MAGIC_STRING__EMPTY;
|
|
|
|
if (ecma_is_value_undefined (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_UNDEFINED;
|
|
}
|
|
else if (ecma_is_value_null (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_OBJECT;
|
|
}
|
|
else if (ecma_is_value_boolean (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_BOOLEAN;
|
|
}
|
|
else if (ecma_is_value_number (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_NUMBER;
|
|
}
|
|
else if (ecma_is_value_string (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_STRING;
|
|
}
|
|
#if ENABLED (JERRY_ES2015)
|
|
else if (ecma_is_value_symbol (value))
|
|
{
|
|
ret_value = LIT_MAGIC_STRING_SYMBOL;
|
|
}
|
|
#endif /* ENABLED (JERRY_ES2015) */
|
|
else
|
|
{
|
|
JERRY_ASSERT (ecma_is_value_object (value));
|
|
|
|
ret_value = ecma_op_is_callable (value) ? LIT_MAGIC_STRING_FUNCTION : LIT_MAGIC_STRING_OBJECT;
|
|
}
|
|
|
|
JERRY_ASSERT (ret_value != LIT_MAGIC_STRING__EMPTY);
|
|
|
|
return ret_value;
|
|
} /* ecma_get_typeof_lit_id */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|