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jerryscript/jerry-core/ecma/operations/ecma-spread-object.c
T
Robert Fancsik 6f83da4c0b Implement the spread operator for array initialization (#3265)
JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2019-11-04 16:36:58 +01:00

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2.7 KiB
C

/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ecma-spread-object.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "ecma-objects.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmaspreadeanobject ECMA Spread object related routines
* @{
*/
/**
* Spread object creation operation.
*
* @return pseudo array object as an ecma value
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
ecma_op_create_spread_object (ecma_value_t element) /**< value to spread */
{
ecma_object_t *object_p = ecma_create_object (NULL,
sizeof (ecma_extended_object_t),
ECMA_OBJECT_TYPE_PSEUDO_ARRAY);
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
ext_object_p->u.pseudo_array.type = ECMA_PSEUDO_SPREAD_OBJECT;
ext_object_p->u.pseudo_array.u2.spread_value = ecma_copy_value_if_not_object (element);
return ecma_make_object_value (object_p);
} /* ecma_op_create_spread_object */
/**
* Spread object creation operation.
*
* @return true - if the argument is a spread object
* false, otherwise
*/
bool
ecma_op_is_spread_object (ecma_value_t value) /**< value to check */
{
if (ecma_is_value_object (value))
{
ecma_object_t *object_p = ecma_get_object_from_value (value);
if (ecma_get_object_type (object_p) == ECMA_OBJECT_TYPE_PSEUDO_ARRAY)
{
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
return ext_object_p->u.pseudo_array.type == ECMA_PSEUDO_SPREAD_OBJECT;
}
}
return false;
} /* ecma_op_is_spread_object */
/**
* Get the referenced element by the spread object
*
* @return element referenced by the spread object as an ecma-value
*/
ecma_value_t
ecma_op_spread_object_get_spreaded_element (ecma_object_t *object_p) /**< spread object */
{
JERRY_ASSERT (ecma_op_is_spread_object (ecma_make_object_value (object_p)));
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
return ecma_copy_value (ext_object_p->u.pseudo_array.u2.spread_value);
} /* ecma_op_spread_object_get_spreaded_element */
/**
* @}
* @}
*/