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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-alloc.h"
#include "ecma-conversion.h"
#include "ecma-exceptions.h"
#include "ecma-eval.h"
#include "ecma-gc.h"
#include "ecma-function-object.h"
#include "ecma-lex-env.h"
#include "ecma-try-catch-macro.h"
#include "js-parser.h"
#include "lit-magic-strings.h"
#ifdef JERRY_ENABLE_LINE_INFO
#include "jcontext.h"
#endif /* JERRY_ENABLE_LINE_INFO */
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
#define BUILTIN_INC_HEADER_NAME "ecma-builtin-function.inc.h"
#define BUILTIN_UNDERSCORED_ID function
#include "ecma-builtin-internal-routines-template.inc.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup function ECMA Function object built-in
* @{
*/
/**
* Handle calling [[Call]] of built-in Function object
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_function_dispatch_call (const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
return ecma_builtin_function_dispatch_construct (arguments_list_p, arguments_list_len);
} /* ecma_builtin_function_dispatch_call */
/**
* Helper method to count and convert the arguments for the Function constructor call.
*
* Performs the operation described in ECMA 262 v5.1 15.3.2.1 steps 5.a-d
*
*
* @return ecma value - concatenated arguments as a string.
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_function_helper_get_function_arguments (const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
if (arguments_list_len <= 1)
{
return ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
}
ecma_value_t final_str = ecma_op_to_string (arguments_list_p[0]);
if (arguments_list_len == 2 || ECMA_IS_VALUE_ERROR (final_str))
{
return final_str;
}
for (ecma_length_t idx = 1; idx < arguments_list_len - 1; idx++)
{
ecma_value_t new_str = ecma_op_to_string (arguments_list_p[idx]);
if (ECMA_IS_VALUE_ERROR (new_str))
{
ecma_free_value (final_str);
/* Return with the error. */
final_str = new_str;
break;
}
ecma_string_t *final_str_p = ecma_get_string_from_value (final_str);
final_str_p = ecma_append_magic_string_to_string (final_str_p,
LIT_MAGIC_STRING_COMMA_CHAR);
ecma_string_t *new_str_p = ecma_get_string_from_value (new_str);
final_str_p = ecma_concat_ecma_strings (final_str_p, new_str_p);
ecma_deref_ecma_string (new_str_p);
final_str = ecma_make_string_value (final_str_p);
}
return final_str;
} /* ecma_builtin_function_helper_get_function_arguments */
/**
* Handle calling [[Construct]] of built-in Function object
*
* See also:
* ECMA-262 v5, 15.3.
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_function_dispatch_construct (const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
ecma_value_t arguments_value = ecma_builtin_function_helper_get_function_arguments (arguments_list_p,
arguments_list_len);
if (ECMA_IS_VALUE_ERROR (arguments_value))
{
return arguments_value;
}
ecma_value_t function_body_value;
if (arguments_list_len > 0)
{
function_body_value = ecma_op_to_string (arguments_list_p[arguments_list_len - 1]);
if (ECMA_IS_VALUE_ERROR (function_body_value))
{
ecma_free_value (arguments_value);
return function_body_value;
}
}
else
{
/* Very unlikely code path, not optimized. */
function_body_value = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
}
ecma_string_t *arguments_str_p = ecma_get_string_from_value (arguments_value);
ecma_string_t *function_body_str_p = ecma_get_string_from_value (function_body_value);
ECMA_STRING_TO_UTF8_STRING (arguments_str_p, arguments_buffer_p, arguments_buffer_size);
ECMA_STRING_TO_UTF8_STRING (function_body_str_p, function_body_buffer_p, function_body_buffer_size);
#ifdef JERRY_ENABLE_LINE_INFO
JERRY_CONTEXT (resource_name) = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
#endif /* JERRY_ENABLE_LINE_INFO */
ecma_compiled_code_t *bytecode_data_p = NULL;
ecma_value_t ret_value = parser_parse_script (arguments_buffer_p,
arguments_buffer_size,
function_body_buffer_p,
function_body_buffer_size,
ECMA_PARSE_NO_OPTS,
&bytecode_data_p);
if (!ECMA_IS_VALUE_ERROR (ret_value))
{
JERRY_ASSERT (ecma_is_value_true (ret_value));
ecma_object_t *func_obj_p = ecma_op_create_function_object (ecma_get_global_environment (),
bytecode_data_p);
ecma_bytecode_deref (bytecode_data_p);
ret_value = ecma_make_object_value (func_obj_p);
}
ECMA_FINALIZE_UTF8_STRING (function_body_buffer_p, function_body_buffer_size);
ECMA_FINALIZE_UTF8_STRING (arguments_buffer_p, arguments_buffer_size);
ecma_deref_ecma_string (arguments_str_p);
ecma_deref_ecma_string (function_body_str_p);
return ret_value;
} /* ecma_builtin_function_dispatch_construct */
/**
* @}
* @}
* @}
*/
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