mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
248 lines
6.9 KiB
C
248 lines
6.9 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 "lit-strings.h"
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#include "ecma-alloc.h"
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#include "ecma-builtins.h"
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#include "ecma-conversion.h"
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#include "ecma-exceptions.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 "ecma-string-object.h"
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#if ENABLED (JERRY_ES2015)
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#include "ecma-symbol-object.h"
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#endif /* ENABLED (JERRY_ES2015) */
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#include "ecma-try-catch-macro.h"
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#include "jrt.h"
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#if ENABLED (JERRY_BUILTIN_STRING)
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#define ECMA_BUILTINS_INTERNAL
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#include "ecma-builtins-internal.h"
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#define BUILTIN_INC_HEADER_NAME "ecma-builtin-string.inc.h"
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#define BUILTIN_UNDERSCORED_ID string
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#include "ecma-builtin-internal-routines-template.inc.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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* \addtogroup string ECMA String object built-in
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* @{
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*/
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/**
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* The String object's 'fromCharCode' routine
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*
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* See also:
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* ECMA-262 v5, 15.5.3.2
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value.
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*/
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static ecma_value_t
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ecma_builtin_string_object_from_char_code (ecma_value_t this_arg, /**< 'this' argument */
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const ecma_value_t args[], /**< arguments list */
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ecma_length_t args_number) /**< number of arguments */
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{
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JERRY_UNUSED (this_arg);
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if (args_number == 0)
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{
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return ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
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}
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ecma_value_t ret_value = ECMA_VALUE_EMPTY;
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ecma_string_t *ret_string_p = NULL;
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lit_utf8_size_t utf8_buf_size = args_number * LIT_CESU8_MAX_BYTES_IN_CODE_UNIT;
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JMEM_DEFINE_LOCAL_ARRAY (utf8_buf_p,
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utf8_buf_size,
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lit_utf8_byte_t);
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lit_utf8_size_t utf8_buf_used = 0;
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for (ecma_length_t arg_index = 0;
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arg_index < args_number && ecma_is_value_empty (ret_value);
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arg_index++)
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{
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ECMA_OP_TO_NUMBER_TRY_CATCH (arg_num, args[arg_index], ret_value);
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uint32_t uint32_char_code = ecma_number_to_uint32 (arg_num);
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ecma_char_t code_unit = (uint16_t) uint32_char_code;
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JERRY_ASSERT (utf8_buf_used <= utf8_buf_size - LIT_UTF8_MAX_BYTES_IN_CODE_UNIT);
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utf8_buf_used += lit_code_unit_to_utf8 (code_unit, utf8_buf_p + utf8_buf_used);
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JERRY_ASSERT (utf8_buf_used <= utf8_buf_size);
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ECMA_OP_TO_NUMBER_FINALIZE (arg_num);
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}
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if (ecma_is_value_empty (ret_value))
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{
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ret_string_p = ecma_new_ecma_string_from_utf8 (utf8_buf_p, utf8_buf_used);
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}
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JMEM_FINALIZE_LOCAL_ARRAY (utf8_buf_p);
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if (ecma_is_value_empty (ret_value))
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{
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ret_value = ecma_make_string_value (ret_string_p);
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}
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return ret_value;
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} /* ecma_builtin_string_object_from_char_code */
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#if ENABLED (JERRY_ES2015)
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/**
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* The String object's 'fromCodePoint' routine
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*
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* See also:
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* ECMA-262 v6, 21.1.2.2
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value.
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*/
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static ecma_value_t
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ecma_builtin_string_object_from_code_point (ecma_value_t this_arg, /**< 'this' argument */
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const ecma_value_t args[], /**< arguments list */
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ecma_length_t args_number) /**< number of arguments */
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{
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JERRY_UNUSED (this_arg);
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if (args_number == 0)
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{
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return ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
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}
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ecma_stringbuilder_t builder = ecma_stringbuilder_create ();
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for (ecma_length_t index = 0; index < args_number; index++)
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{
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ecma_value_t to_number_value = ecma_op_to_number (args[index]);
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if (ECMA_IS_VALUE_ERROR (to_number_value))
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{
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ecma_stringbuilder_destroy (&builder);
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return to_number_value;
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}
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ecma_number_t to_number_num = ecma_get_number_from_value (to_number_value);
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ecma_free_value (to_number_value);
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ecma_number_t to_int_num;
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ecma_value_t to_int_value = ecma_op_to_integer (to_number_value, &to_int_num);
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if (ECMA_IS_VALUE_ERROR (to_int_value))
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{
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ecma_stringbuilder_destroy (&builder);
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return to_int_value;
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}
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if (to_number_num != to_int_num || to_int_num < 0 || to_int_num > LIT_UNICODE_CODE_POINT_MAX)
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{
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ecma_stringbuilder_destroy (&builder);
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return ecma_raise_range_error (ECMA_ERR_MSG ("Error: Invalid code point"));
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}
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lit_code_point_t code_point = (uint32_t) to_int_num;
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ecma_char_t converted_cp[2];
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uint8_t encoded_size = lit_utf16_encode_code_point (code_point, converted_cp);
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for (uint8_t i = 0; i < encoded_size; i++)
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{
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ecma_stringbuilder_append_char (&builder, converted_cp[i]);
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}
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}
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ecma_string_t *ret_str_p = ecma_stringbuilder_finalize (&builder);
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return ecma_make_string_value (ret_str_p);
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} /* ecma_builtin_string_object_from_code_point */
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#endif /* ENABLED (JERRY_ES2015) */
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/**
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* Handle calling [[Call]] of built-in String object
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*
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* See also:
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* ECMA-262 v6, 21.1.1.1
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*
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* @return ecma value
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*/
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ecma_value_t
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ecma_builtin_string_dispatch_call (const ecma_value_t *arguments_list_p, /**< arguments list */
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ecma_length_t arguments_list_len) /**< number of arguments */
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{
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JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
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ecma_value_t ret_value = ECMA_VALUE_EMPTY;
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/* 1. */
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if (arguments_list_len == 0)
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{
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ret_value = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
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}
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#if ENABLED (JERRY_ES2015)
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/* 2.a */
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else if (ecma_is_value_symbol (arguments_list_p[0]))
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{
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ret_value = ecma_get_symbol_descriptive_string (arguments_list_p[0]);
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}
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#endif /* ENABLED (JERRY_ES2015) */
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/* 2.b */
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else
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{
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ecma_string_t *str_p = ecma_op_to_string (arguments_list_p[0]);
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if (JERRY_UNLIKELY (str_p == NULL))
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{
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return ECMA_VALUE_ERROR;
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}
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ret_value = ecma_make_string_value (str_p);
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}
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return ret_value;
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} /* ecma_builtin_string_dispatch_call */
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/**
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* Handle calling [[Construct]] of built-in String object
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*
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* @return ecma value
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*/
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ecma_value_t
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ecma_builtin_string_dispatch_construct (const ecma_value_t *arguments_list_p, /**< arguments list */
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ecma_length_t arguments_list_len) /**< number of arguments */
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{
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JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
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return ecma_op_create_string_object (arguments_list_p, arguments_list_len);
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} /* ecma_builtin_string_dispatch_construct */
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/**
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* @}
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* @}
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* @}
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*/
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#endif /* ENABLED (JERRY_BUILTIN_STRING) */
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