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/* 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-symbol-object.h"
#include "ecma-alloc.h"
#include "ecma-builtins.h"
#include "ecma-exceptions.h"
#include "ecma-gc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "ecma-objects-general.h"
#include "ecma-objects.h"
#include "lit-char-helpers.h"
#if JERRY_ESNEXT
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmasymbolobject ECMA Symbol object related routines
* @{
*/
/**
* Symbol creation operation.
*
* See also: ECMA-262 v6, 6.1.5.1
*
* @return ecma value
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
ecma_op_create_symbol (const ecma_value_t *arguments_list_p, /**< list of arguments */
uint32_t arguments_list_len) /**< length of the arguments' list */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
ecma_value_t string_desc;
/* 1-3. */
if (arguments_list_len == 0 || ecma_is_value_undefined (arguments_list_p[0]))
{
string_desc = ECMA_VALUE_UNDEFINED;
}
else
{
ecma_string_t *str_p = ecma_op_to_string (arguments_list_p[0]);
/* 4. */
if (JERRY_UNLIKELY (str_p == NULL))
{
return ECMA_VALUE_ERROR;
}
string_desc = ecma_make_string_value (str_p);
}
/* 5. */
return ecma_make_symbol_value (ecma_new_symbol_from_descriptor_string (string_desc));
} /* ecma_op_create_symbol */
/**
* Symbol object creation operation.
*
* See also: ECMA-262 v6, 19.4.1
*
* @return ecma value
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
ecma_op_create_symbol_object (const ecma_value_t value) /**< symbol value */
{
JERRY_ASSERT (ecma_is_value_symbol (value));
ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_SYMBOL_PROTOTYPE);
ecma_object_t *object_p =
ecma_create_object (prototype_obj_p, sizeof (ecma_extended_object_t), ECMA_OBJECT_TYPE_CLASS);
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
ext_object_p->u.cls.type = ECMA_OBJECT_CLASS_SYMBOL;
ext_object_p->u.cls.u3.value = ecma_copy_value (value);
return ecma_make_object_value (object_p);
} /* ecma_op_create_symbol_object */
/**
* Get the symbol descriptor ecma-string from an ecma-symbol
*
* @return pointer to ecma-string descriptor
*/
ecma_value_t
ecma_get_symbol_description (ecma_string_t *symbol_p) /**< ecma-symbol */
{
JERRY_ASSERT (symbol_p != NULL);
JERRY_ASSERT (ecma_prop_name_is_symbol (symbol_p));
return ((ecma_extended_string_t *) symbol_p)->u.symbol_descriptor;
} /* ecma_get_symbol_description */
/**
* Get the descriptive string of the Symbol.
*
* See also: ECMA-262 v6, 19.4.3.2.1
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_get_symbol_descriptive_string (ecma_value_t symbol_value) /**< symbol to stringify */
{
/* 1. */
JERRY_ASSERT (ecma_is_value_symbol (symbol_value));
/* 2 - 3. */
ecma_string_t *symbol_p = ecma_get_symbol_from_value (symbol_value);
ecma_value_t string_desc = ecma_get_symbol_description (symbol_p);
ecma_stringbuilder_t builder = ecma_stringbuilder_create_raw ((lit_utf8_byte_t *) ("Symbol("), 7);
if (!ecma_is_value_undefined (string_desc))
{
ecma_string_t *string_desc_p = ecma_get_string_from_value (string_desc);
ecma_stringbuilder_append (&builder, string_desc_p);
}
ecma_stringbuilder_append_byte (&builder, LIT_CHAR_RIGHT_PAREN);
return ecma_make_string_value (ecma_stringbuilder_finalize (&builder));
} /* ecma_get_symbol_descriptive_string */
/**
* thisSymbolValue abstract operation
*
* See also:
* ECMA-262 v11, 19.4.3
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_symbol_this_value (ecma_value_t this_arg) /**< this argument value */
{
/* 1. */
if (ecma_is_value_symbol (this_arg))
{
return this_arg;
}
/* 2. */
if (ecma_is_value_object (this_arg))
{
ecma_object_t *object_p = ecma_get_object_from_value (this_arg);
if (ecma_object_class_is (object_p, ECMA_OBJECT_CLASS_SYMBOL))
{
return ((ecma_extended_object_t *) object_p)->u.cls.u3.value;
}
}
/* 3. */
return ecma_raise_type_error (ECMA_ERR_ARGUMENT_THIS_NOT_SYMBOL);
} /* ecma_symbol_this_value */
#endif /* JERRY_ESNEXT */
/**
* @}
* @}
*/
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