mirror of
https://github.com/jerryscript-project/jerryscript.git
synced 2025-12-15 16:29:21 +00:00
1841 lines
50 KiB
C
1841 lines
50 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-array-object.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-function-object.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-builtin-helpers.h"
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#include "ecma-objects.h"
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#include "ecma-objects-general.h"
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#include "ecma-try-catch-macro.h"
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#include "jrt.h"
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#include "jrt-libc-includes.h"
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#include "lit-char-helpers.h"
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#include "lit-globals.h"
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#ifndef CONFIG_DISABLE_JSON_BUILTIN
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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-json.inc.h"
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#define BUILTIN_UNDERSCORED_ID json
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#include "ecma-builtin-internal-routines-template.inc.h"
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/**
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* The number of expected hexidecimal characters in a hex escape sequence
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*/
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#define ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH (4)
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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 json ECMA JSON object built-in
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* @{
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*/
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/**
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* JSON token type
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*/
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typedef enum
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{
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invalid_token, /**< error token */
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end_token, /**< end of stream reached */
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number_token, /**< JSON number */
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string_token, /**< JSON string */
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null_token, /**< JSON null primitive value */
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true_token, /**< JSON true primitive value */
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false_token, /**< JSON false primitive value */
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left_brace_token, /**< JSON left brace */
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right_brace_token, /**< JSON right brace */
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left_square_token, /**< JSON left square bracket */
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comma_token, /**< JSON comma */
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colon_token /**< JSON colon */
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} ecma_json_token_type_t;
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/**
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* JSON token
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*/
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typedef struct
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{
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ecma_json_token_type_t type; /**< type of the current token */
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const lit_utf8_byte_t *current_p; /**< current position of the string processed by the parser */
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const lit_utf8_byte_t *end_p; /**< end of the string processed by the parser */
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/**
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* Fields depending on type.
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*/
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union
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{
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ecma_string_t *string_p; /**< when type is string_token it contains the string */
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ecma_number_t number; /**< when type is number_token, it contains the value of the number */
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} u;
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} ecma_json_token_t;
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/**
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* Compare the string with an ID.
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*
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* @return true if the match is successful
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*/
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static bool
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ecma_builtin_json_check_id (const lit_utf8_byte_t *string_p, /**< start position */
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const lit_utf8_byte_t *end_p, /**< input end */
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const char *string_id_p) /**< string identifier */
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{
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/*
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* String comparison must not depend on lit_utf8_byte_t definition.
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*/
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JERRY_ASSERT (*string_p == *string_id_p);
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string_p++;
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string_id_p++;
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while (string_p < end_p)
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{
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if (*string_id_p == LIT_CHAR_NULL)
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{
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/* JSON lexer accepts input strings such as falsenull and
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* returns with multiple tokens (false and null in this case).
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* This is different from normal lexers, whose return with a
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* single identifier. The falsenull input will still cause an
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* error eventually, since a separator must always be present
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* between two JSON values regardless of the current expression
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* type. */
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return true;
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}
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if (*string_p != *string_id_p)
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{
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return false;
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}
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string_p++;
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string_id_p++;
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}
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return (*string_id_p == LIT_CHAR_NULL);
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} /* ecma_builtin_json_check_id */
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/**
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* Parse and extract string token.
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*/
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static void
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ecma_builtin_json_parse_string (ecma_json_token_t *token_p) /**< token argument */
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{
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const lit_utf8_byte_t *current_p = token_p->current_p;
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const lit_utf8_byte_t *end_p = token_p->end_p;
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bool has_escape_sequence = false;
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lit_utf8_size_t buffer_size = 0;
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/* First step: syntax checking. */
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while (true)
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{
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if (current_p >= end_p || *current_p <= 0x1f)
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{
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return;
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}
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if (*current_p == LIT_CHAR_DOUBLE_QUOTE)
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{
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break;
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}
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if (*current_p == LIT_CHAR_BACKSLASH)
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{
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current_p++;
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has_escape_sequence = true;
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/* If there is an escape sequence but there's no escapable character just return */
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if (current_p >= end_p)
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{
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return;
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}
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switch (*current_p)
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{
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case LIT_CHAR_DOUBLE_QUOTE:
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case LIT_CHAR_SLASH:
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case LIT_CHAR_BACKSLASH:
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case LIT_CHAR_LOWERCASE_B:
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case LIT_CHAR_LOWERCASE_F:
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case LIT_CHAR_LOWERCASE_N:
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case LIT_CHAR_LOWERCASE_R:
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case LIT_CHAR_LOWERCASE_T:
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{
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break;
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}
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case LIT_CHAR_LOWERCASE_U:
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{
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if ((end_p - current_p <= ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH))
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{
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return;
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}
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ecma_char_t code_unit;
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if (!(lit_read_code_unit_from_hex (current_p + 1, ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH, &code_unit)))
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{
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return;
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}
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current_p += ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH + 1;
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lit_utf8_byte_t char_buffer[LIT_UTF8_MAX_BYTES_IN_CODE_UNIT];
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buffer_size += lit_code_unit_to_utf8 (code_unit, char_buffer);
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continue;
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}
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default:
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{
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return;
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}
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}
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}
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buffer_size++;
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current_p++;
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}
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token_p->type = string_token;
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if (!has_escape_sequence)
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{
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token_p->u.string_p = ecma_new_ecma_string_from_utf8 (token_p->current_p, buffer_size);
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token_p->current_p = current_p + 1;
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return;
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}
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JMEM_DEFINE_LOCAL_ARRAY (buffer_p, buffer_size, lit_utf8_byte_t);
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lit_utf8_byte_t *write_p = buffer_p;
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current_p = token_p->current_p;
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while (*current_p != LIT_CHAR_DOUBLE_QUOTE)
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{
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if (*current_p == LIT_CHAR_BACKSLASH)
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{
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current_p++;
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lit_utf8_byte_t special_character;
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switch (*current_p)
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{
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case LIT_CHAR_LOWERCASE_B:
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{
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special_character = LIT_CHAR_BS;
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break;
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}
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case LIT_CHAR_LOWERCASE_F:
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{
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special_character = LIT_CHAR_FF;
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break;
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}
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case LIT_CHAR_LOWERCASE_N:
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{
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special_character = LIT_CHAR_LF;
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break;
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}
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case LIT_CHAR_LOWERCASE_R:
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{
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special_character = LIT_CHAR_CR;
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break;
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}
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case LIT_CHAR_LOWERCASE_T:
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{
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special_character = LIT_CHAR_TAB;
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break;
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}
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case LIT_CHAR_LOWERCASE_U:
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{
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ecma_char_t code_unit;
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lit_read_code_unit_from_hex (current_p + 1, ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH, &code_unit);
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current_p += ECMA_JSON_HEX_ESCAPE_SEQUENCE_LENGTH + 1;
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write_p += lit_code_unit_to_utf8 (code_unit, write_p);
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continue;
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}
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default:
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{
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special_character = *current_p;
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break;
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}
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}
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*write_p++ = special_character;
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current_p++;
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continue;
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}
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*write_p++ = *current_p++;
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}
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JERRY_ASSERT (write_p == buffer_p + buffer_size);
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token_p->u.string_p = ecma_new_ecma_string_from_utf8 (buffer_p, buffer_size);
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JMEM_FINALIZE_LOCAL_ARRAY (buffer_p);
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token_p->current_p = current_p + 1;
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} /* ecma_builtin_json_parse_string */
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/**
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* Parse and extract string token.
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*/
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static void
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ecma_builtin_json_parse_number (ecma_json_token_t *token_p) /**< token argument */
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{
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const lit_utf8_byte_t *current_p = token_p->current_p;
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const lit_utf8_byte_t *end_p = token_p->end_p;
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const lit_utf8_byte_t *start_p = current_p;
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JERRY_ASSERT (current_p < end_p);
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if (*current_p == LIT_CHAR_MINUS)
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{
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current_p++;
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}
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if (current_p >= end_p)
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{
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return;
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}
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if (*current_p == LIT_CHAR_0)
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{
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current_p++;
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if (current_p < end_p && lit_char_is_decimal_digit (*current_p))
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{
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return;
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}
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}
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else if (lit_char_is_decimal_digit (*current_p))
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{
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do
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{
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current_p++;
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}
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while (current_p < end_p && lit_char_is_decimal_digit (*current_p));
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}
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if (current_p < end_p && *current_p == LIT_CHAR_DOT)
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{
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current_p++;
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if (current_p >= end_p || !lit_char_is_decimal_digit (*current_p))
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{
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return;
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}
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do
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{
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current_p++;
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}
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while (current_p < end_p && lit_char_is_decimal_digit (*current_p));
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}
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if (current_p < end_p && (*current_p == LIT_CHAR_LOWERCASE_E || *current_p == LIT_CHAR_UPPERCASE_E))
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{
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current_p++;
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if (current_p < end_p && (*current_p == LIT_CHAR_PLUS || *current_p == LIT_CHAR_MINUS))
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{
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current_p++;
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}
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if (current_p >= end_p || !lit_char_is_decimal_digit (*current_p))
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{
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return;
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}
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do
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{
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current_p++;
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}
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while (current_p < end_p && lit_char_is_decimal_digit (*current_p));
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}
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token_p->type = number_token;
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token_p->u.number = ecma_utf8_string_to_number (start_p, (lit_utf8_size_t) (current_p - start_p));
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token_p->current_p = current_p;
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} /* ecma_builtin_json_parse_number */
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/**
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* Parse next token.
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*
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* The function fills the fields of the ecma_json_token_t
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* argument and advances the string pointer.
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*/
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static void
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ecma_builtin_json_parse_next_token (ecma_json_token_t *token_p, /**< token argument */
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bool parse_string) /**< strings are allowed to parse */
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{
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const lit_utf8_byte_t *current_p = token_p->current_p;
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const lit_utf8_byte_t *end_p = token_p->end_p;
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token_p->type = invalid_token;
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while (current_p < end_p
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&& (*current_p == LIT_CHAR_SP
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|| *current_p == LIT_CHAR_CR
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|| *current_p == LIT_CHAR_LF
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|| *current_p == LIT_CHAR_TAB))
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{
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current_p++;
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}
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if (current_p == end_p)
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{
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token_p->type = end_token;
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return;
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}
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switch (*current_p)
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{
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case LIT_CHAR_LEFT_BRACE:
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{
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token_p->type = left_brace_token;
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token_p->current_p = current_p + 1;
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return;
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}
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case LIT_CHAR_RIGHT_BRACE:
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{
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token_p->type = right_brace_token;
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token_p->current_p = current_p + 1;
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return;
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}
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case LIT_CHAR_LEFT_SQUARE:
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{
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token_p->type = left_square_token;
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token_p->current_p = current_p + 1;
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return;
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}
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case LIT_CHAR_COMMA:
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{
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token_p->type = comma_token;
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token_p->current_p = current_p + 1;
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return;
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}
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case LIT_CHAR_COLON:
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{
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token_p->type = colon_token;
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token_p->current_p = current_p + 1;
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return;
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}
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case LIT_CHAR_DOUBLE_QUOTE:
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{
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if (parse_string)
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{
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token_p->current_p = current_p + 1;
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ecma_builtin_json_parse_string (token_p);
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}
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return;
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}
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case LIT_CHAR_LOWERCASE_N:
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{
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if (ecma_builtin_json_check_id (current_p, token_p->end_p, "null"))
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{
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token_p->type = null_token;
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token_p->current_p = current_p + 4;
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return;
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}
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break;
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}
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case LIT_CHAR_LOWERCASE_T:
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{
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if (ecma_builtin_json_check_id (current_p, token_p->end_p, "true"))
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{
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token_p->type = true_token;
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token_p->current_p = current_p + 4;
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return;
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}
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break;
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}
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case LIT_CHAR_LOWERCASE_F:
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{
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if (ecma_builtin_json_check_id (current_p, token_p->end_p, "false"))
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{
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token_p->type = false_token;
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token_p->current_p = current_p + 5;
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return;
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}
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break;
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}
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default:
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{
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if (*current_p == LIT_CHAR_MINUS || lit_char_is_decimal_digit (*current_p))
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{
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token_p->current_p = current_p;
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ecma_builtin_json_parse_number (token_p);
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return;
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}
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break;
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}
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}
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} /* ecma_builtin_json_parse_next_token */
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|
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/**
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* Checks whether the next token is right square token.
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*
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* @return true if it is.
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*
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* Always skips white spaces regardless the next token.
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*/
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static bool
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ecma_builtin_json_check_right_square_token (ecma_json_token_t *token_p) /**< token argument */
|
|
{
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const lit_utf8_byte_t *current_p = token_p->current_p;
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const lit_utf8_byte_t *end_p = token_p->end_p;
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|
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/*
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* No need for end check since the string is zero terminated.
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*/
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while (current_p < end_p
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&& (*current_p == LIT_CHAR_SP
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|| *current_p == LIT_CHAR_CR
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|| *current_p == LIT_CHAR_LF
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|| *current_p == LIT_CHAR_TAB))
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{
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current_p++;
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}
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token_p->current_p = current_p;
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if (current_p < end_p && *current_p == LIT_CHAR_RIGHT_SQUARE)
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{
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token_p->current_p = current_p + 1;
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return true;
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}
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|
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return false;
|
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} /* ecma_builtin_json_check_right_square_token */
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|
|
/**
|
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* Utility for defining properties.
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|
*
|
|
* It silently ignores all errors.
|
|
*/
|
|
static void
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ecma_builtin_json_define_value_property (ecma_object_t *obj_p, /**< this object */
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|
ecma_string_t *property_name_p, /**< property name */
|
|
ecma_value_t value) /**< value */
|
|
{
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|
ecma_value_t completion_value = ecma_builtin_helper_def_prop (obj_p,
|
|
property_name_p,
|
|
value,
|
|
true, /* Writable */
|
|
true, /* Enumerable */
|
|
true, /* Configurable */
|
|
false); /* Failure handling */
|
|
|
|
JERRY_ASSERT (ecma_is_value_boolean (completion_value));
|
|
} /* ecma_builtin_json_define_value_property */
|
|
|
|
/**
|
|
* Parse next value.
|
|
*
|
|
* The function fills the fields of the ecma_json_token_t
|
|
* argument and advances the string pointer.
|
|
*
|
|
* @return ecma_value with the property value
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_parse_value (ecma_json_token_t *token_p) /**< token argument */
|
|
{
|
|
ecma_builtin_json_parse_next_token (token_p, true);
|
|
|
|
switch (token_p->type)
|
|
{
|
|
case number_token:
|
|
{
|
|
return ecma_make_number_value (token_p->u.number);
|
|
}
|
|
case string_token:
|
|
{
|
|
return ecma_make_string_value (token_p->u.string_p);
|
|
}
|
|
case null_token:
|
|
{
|
|
return ECMA_VALUE_NULL;
|
|
}
|
|
case true_token:
|
|
{
|
|
return ECMA_VALUE_TRUE;
|
|
}
|
|
case false_token:
|
|
{
|
|
return ECMA_VALUE_FALSE;
|
|
}
|
|
case left_brace_token:
|
|
{
|
|
bool parse_comma = false;
|
|
ecma_object_t *object_p = ecma_op_create_object_object_noarg ();
|
|
|
|
while (true)
|
|
{
|
|
ecma_builtin_json_parse_next_token (token_p, !parse_comma);
|
|
|
|
if (token_p->type == right_brace_token)
|
|
{
|
|
return ecma_make_object_value (object_p);
|
|
}
|
|
|
|
if (parse_comma)
|
|
{
|
|
if (token_p->type != comma_token)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ecma_builtin_json_parse_next_token (token_p, true);
|
|
}
|
|
|
|
if (token_p->type != string_token)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ecma_string_t *name_p = token_p->u.string_p;
|
|
|
|
ecma_builtin_json_parse_next_token (token_p, false);
|
|
|
|
if (token_p->type != colon_token)
|
|
{
|
|
ecma_deref_ecma_string (name_p);
|
|
break;
|
|
}
|
|
|
|
ecma_value_t value = ecma_builtin_json_parse_value (token_p);
|
|
|
|
if (ecma_is_value_undefined (value))
|
|
{
|
|
ecma_deref_ecma_string (name_p);
|
|
break;
|
|
}
|
|
|
|
ecma_builtin_json_define_value_property (object_p, name_p, value);
|
|
ecma_deref_ecma_string (name_p);
|
|
ecma_free_value (value);
|
|
|
|
parse_comma = true;
|
|
}
|
|
|
|
/*
|
|
* Parse error occured.
|
|
*/
|
|
ecma_deref_object (object_p);
|
|
return ECMA_VALUE_UNDEFINED;
|
|
}
|
|
case left_square_token:
|
|
{
|
|
bool parse_comma = false;
|
|
uint32_t length = 0;
|
|
|
|
ecma_value_t array_construction = ecma_op_create_array_object (NULL, 0, false);
|
|
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (array_construction));
|
|
|
|
ecma_object_t *array_p = ecma_get_object_from_value (array_construction);
|
|
|
|
while (true)
|
|
{
|
|
if (ecma_builtin_json_check_right_square_token (token_p))
|
|
{
|
|
return ecma_make_object_value (array_p);
|
|
}
|
|
|
|
if (parse_comma)
|
|
{
|
|
ecma_builtin_json_parse_next_token (token_p, false);
|
|
|
|
if (token_p->type != comma_token)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
ecma_value_t value = ecma_builtin_json_parse_value (token_p);
|
|
|
|
if (ecma_is_value_undefined (value))
|
|
{
|
|
break;
|
|
}
|
|
|
|
ecma_string_t *index_str_p = ecma_new_ecma_string_from_uint32 (length);
|
|
|
|
ecma_value_t completion = ecma_builtin_helper_def_prop (array_p,
|
|
index_str_p,
|
|
value,
|
|
true, /* Writable */
|
|
true, /* Enumerable */
|
|
true, /* Configurable */
|
|
false); /* Failure handling */
|
|
|
|
JERRY_ASSERT (ecma_is_value_true (completion));
|
|
|
|
ecma_deref_ecma_string (index_str_p);
|
|
|
|
ecma_free_value (value);
|
|
|
|
length++;
|
|
parse_comma = true;
|
|
}
|
|
|
|
/*
|
|
* Parse error occured.
|
|
*/
|
|
ecma_deref_object (array_p);
|
|
return ECMA_VALUE_UNDEFINED;
|
|
}
|
|
default:
|
|
{
|
|
return ECMA_VALUE_UNDEFINED;
|
|
}
|
|
}
|
|
} /* ecma_builtin_json_parse_value */
|
|
|
|
/**
|
|
* Abstract operation Walk defined in 15.12.2
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.2
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_walk (ecma_object_t *reviver_p, /**< reviver function */
|
|
ecma_object_t *holder_p, /**< holder object */
|
|
ecma_string_t *name_p) /**< property name */
|
|
{
|
|
JERRY_ASSERT (reviver_p);
|
|
JERRY_ASSERT (holder_p);
|
|
JERRY_ASSERT (name_p);
|
|
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
ECMA_TRY_CATCH (value_get,
|
|
ecma_op_object_get (holder_p, name_p),
|
|
ret_value);
|
|
|
|
if (ecma_is_value_object (value_get))
|
|
{
|
|
ecma_object_t *object_p = ecma_get_object_from_value (value_get);
|
|
|
|
ecma_collection_header_t *props_p = ecma_op_object_get_property_names (object_p, false, true, false);
|
|
|
|
ecma_value_t *ecma_value_p = ecma_collection_iterator_init (props_p);
|
|
|
|
while (ecma_value_p != NULL && ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_string_t *property_name_p = ecma_get_string_from_value (*ecma_value_p);
|
|
ecma_value_p = ecma_collection_iterator_next (ecma_value_p);
|
|
|
|
ECMA_TRY_CATCH (value_walk,
|
|
ecma_builtin_json_walk (reviver_p,
|
|
object_p,
|
|
property_name_p),
|
|
ret_value);
|
|
|
|
/*
|
|
* We cannot optimize this function since any members
|
|
* can be changed (deleted) by the reviver function.
|
|
*/
|
|
if (ecma_is_value_undefined (value_walk))
|
|
{
|
|
ecma_value_t delete_val = ecma_op_general_object_delete (object_p,
|
|
property_name_p,
|
|
false);
|
|
JERRY_ASSERT (ecma_is_value_boolean (delete_val));
|
|
}
|
|
else
|
|
{
|
|
ecma_builtin_json_define_value_property (object_p,
|
|
property_name_p,
|
|
value_walk);
|
|
}
|
|
|
|
ECMA_FINALIZE (value_walk);
|
|
}
|
|
|
|
ecma_free_values_collection (props_p, 0);
|
|
}
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_value_t arguments_list[2];
|
|
|
|
arguments_list[0] = ecma_make_string_value (name_p);
|
|
arguments_list[1] = value_get;
|
|
|
|
/*
|
|
* The completion value can be anything including exceptions.
|
|
*/
|
|
ret_value = ecma_op_function_call (reviver_p,
|
|
ecma_make_object_value (holder_p),
|
|
arguments_list,
|
|
2);
|
|
}
|
|
else
|
|
{
|
|
JERRY_ASSERT (ECMA_IS_VALUE_ERROR (ret_value));
|
|
}
|
|
|
|
ECMA_FINALIZE (value_get);
|
|
|
|
return ret_value;
|
|
} /* ecma_builtin_json_walk */
|
|
|
|
/**
|
|
* Function to set a string token from the given arguments, fills its fields and advances the string pointer.
|
|
*
|
|
* @return ecma_value_t containing an object or an error massage
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
ecma_value_t
|
|
ecma_builtin_json_parse_buffer (const lit_utf8_byte_t * str_start_p, /**< String to parse */
|
|
lit_utf8_size_t string_size) /**< size of the string */
|
|
{
|
|
ecma_json_token_t token;
|
|
token.current_p = str_start_p;
|
|
token.end_p = str_start_p + string_size;
|
|
|
|
ecma_value_t final_result = ecma_builtin_json_parse_value (&token);
|
|
|
|
if (!ecma_is_value_undefined (final_result))
|
|
{
|
|
ecma_builtin_json_parse_next_token (&token, false);
|
|
|
|
if (token.type != end_token)
|
|
{
|
|
ecma_free_value (final_result);
|
|
final_result = ECMA_VALUE_UNDEFINED;
|
|
}
|
|
}
|
|
return final_result;
|
|
} /*ecma_builtin_json_parse_buffer*/
|
|
|
|
/**
|
|
* The JSON object's 'parse' routine
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.2
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_parse (ecma_value_t this_arg, /**< 'this' argument */
|
|
ecma_value_t arg1, /**< string argument */
|
|
ecma_value_t arg2) /**< reviver argument */
|
|
{
|
|
JERRY_UNUSED (this_arg);
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
ECMA_TRY_CATCH (string,
|
|
ecma_op_to_string (arg1),
|
|
ret_value);
|
|
|
|
const ecma_string_t *string_p = ecma_get_string_from_value (string);
|
|
|
|
ECMA_STRING_TO_UTF8_STRING (string_p, str_start_p, string_size);
|
|
|
|
ecma_value_t final_result = ecma_builtin_json_parse_buffer (str_start_p, string_size);
|
|
|
|
if (ecma_is_value_undefined (final_result))
|
|
{
|
|
ret_value = ecma_raise_syntax_error (ECMA_ERR_MSG ("JSON string parse error."));
|
|
}
|
|
else
|
|
{
|
|
if (ecma_op_is_callable (arg2))
|
|
{
|
|
ecma_object_t *object_p = ecma_op_create_object_object_noarg ();
|
|
|
|
ecma_property_value_t *prop_value_p;
|
|
prop_value_p = ecma_create_named_data_property (object_p,
|
|
ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY),
|
|
ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE_WRITABLE,
|
|
NULL);
|
|
|
|
ecma_named_data_property_assign_value (object_p, prop_value_p, final_result);
|
|
ecma_free_value (final_result);
|
|
|
|
ret_value = ecma_builtin_json_walk (ecma_get_object_from_value (arg2),
|
|
object_p,
|
|
ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY));
|
|
ecma_deref_object (object_p);
|
|
}
|
|
else
|
|
{
|
|
ret_value = final_result;
|
|
}
|
|
}
|
|
|
|
ECMA_FINALIZE_UTF8_STRING (str_start_p, string_size);
|
|
|
|
ECMA_FINALIZE (string);
|
|
return ret_value;
|
|
} /* ecma_builtin_json_parse */
|
|
|
|
static ecma_value_t
|
|
ecma_builtin_json_str (ecma_string_t *key_p, ecma_object_t *holder_p, ecma_json_stringify_context_t *context_p);
|
|
|
|
static ecma_value_t
|
|
ecma_builtin_json_object (ecma_object_t *obj_p, ecma_json_stringify_context_t *context_p);
|
|
|
|
static ecma_value_t
|
|
ecma_builtin_json_array (ecma_object_t *obj_p, ecma_json_stringify_context_t *context_p);
|
|
|
|
/**
|
|
* Helper function to stringify an object in JSON format representing an ecma_value.
|
|
*
|
|
* @return ecma_value_t string created from an abject formating by a given context
|
|
* Returned value must be freed with ecma_free_value.
|
|
*
|
|
*/
|
|
static ecma_value_t ecma_builtin_json_str_helper (const ecma_value_t arg1, /**< object argument */
|
|
ecma_json_stringify_context_t context) /**< context argument */
|
|
{
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
ecma_object_t *obj_wrapper_p = ecma_op_create_object_object_noarg ();
|
|
ecma_string_t *empty_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
ecma_value_t put_comp_val = ecma_op_object_put (obj_wrapper_p,
|
|
empty_str_p,
|
|
arg1,
|
|
false);
|
|
JERRY_ASSERT (ecma_is_value_true (put_comp_val));
|
|
ecma_free_value (put_comp_val);
|
|
ECMA_TRY_CATCH (str_val,
|
|
ecma_builtin_json_str (empty_str_p, obj_wrapper_p, &context),
|
|
ret_value);
|
|
ret_value = ecma_copy_value (str_val);
|
|
ECMA_FINALIZE (str_val);
|
|
ecma_free_value (put_comp_val);
|
|
ecma_deref_ecma_string (empty_str_p);
|
|
ecma_deref_object (obj_wrapper_p);
|
|
|
|
return ret_value;
|
|
} /* ecma_builtin_json_str_helper */
|
|
|
|
/**
|
|
* Function to create a json formated string from an object
|
|
*
|
|
* @return ecma_value_t containing a json string
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
ecma_value_t
|
|
ecma_builtin_json_string_from_object (const ecma_value_t arg1) /**< object argument */
|
|
{
|
|
ecma_json_stringify_context_t context;
|
|
context.occurence_stack_last_p = NULL;
|
|
context.indent_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
context.property_list_p = ecma_new_values_collection ();
|
|
context.replacer_function_p = NULL;
|
|
context.gap_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
|
|
ecma_value_t ret_value = ecma_builtin_json_str_helper (arg1, context);
|
|
|
|
ecma_deref_ecma_string (context.gap_str_p);
|
|
ecma_deref_ecma_string (context.indent_str_p);
|
|
ecma_free_values_collection (context.property_list_p, 0);
|
|
return ret_value;
|
|
} /*ecma_builtin_json_string_from_object*/
|
|
|
|
/**
|
|
* The JSON object's 'stringify' routine
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.3
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_stringify (ecma_value_t this_arg, /**< 'this' argument */
|
|
ecma_value_t arg1, /**< value */
|
|
ecma_value_t arg2, /**< replacer */
|
|
ecma_value_t arg3) /**< space */
|
|
{
|
|
JERRY_UNUSED (this_arg);
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
ecma_json_stringify_context_t context;
|
|
|
|
/* 1. */
|
|
context.occurence_stack_last_p = NULL;
|
|
|
|
/* 2. */
|
|
context.indent_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
|
|
/* 3. */
|
|
context.property_list_p = ecma_new_values_collection ();
|
|
|
|
context.replacer_function_p = NULL;
|
|
|
|
/* 4. */
|
|
if (ecma_is_value_object (arg2))
|
|
{
|
|
ecma_object_t *obj_p = ecma_get_object_from_value (arg2);
|
|
|
|
/* 4.a */
|
|
if (ecma_op_is_callable (arg2))
|
|
{
|
|
context.replacer_function_p = obj_p;
|
|
}
|
|
/* 4.b */
|
|
else if (ecma_object_get_class_name (obj_p) == LIT_MAGIC_STRING_ARRAY_UL)
|
|
{
|
|
ECMA_TRY_CATCH (array_length,
|
|
ecma_op_object_get_by_magic_id (obj_p, LIT_MAGIC_STRING_LENGTH),
|
|
ret_value);
|
|
|
|
ECMA_OP_TO_NUMBER_TRY_CATCH (array_length_num,
|
|
array_length,
|
|
ret_value);
|
|
|
|
uint32_t index = 0;
|
|
|
|
/* 4.b.ii */
|
|
while ((index < ecma_number_to_uint32 (array_length_num)) && ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_string_t *index_str_p = ecma_new_ecma_string_from_uint32 (index);
|
|
|
|
ECMA_TRY_CATCH (value,
|
|
ecma_op_object_get (obj_p, index_str_p),
|
|
ret_value);
|
|
|
|
/* 4.b.ii.1 */
|
|
ecma_value_t item = ECMA_VALUE_UNDEFINED;
|
|
|
|
/* 4.b.ii.2 */
|
|
if (ecma_is_value_string (value))
|
|
{
|
|
item = ecma_copy_value (value);
|
|
}
|
|
/* 4.b.ii.3 */
|
|
else if (ecma_is_value_number (value))
|
|
{
|
|
ECMA_TRY_CATCH (str_val,
|
|
ecma_op_to_string (value),
|
|
ret_value);
|
|
|
|
item = ecma_copy_value (str_val);
|
|
|
|
ECMA_FINALIZE (str_val);
|
|
}
|
|
/* 4.b.ii.4 */
|
|
else if (ecma_is_value_object (value))
|
|
{
|
|
ecma_object_t *obj_val_p = ecma_get_object_from_value (value);
|
|
lit_magic_string_id_t class_name = ecma_object_get_class_name (obj_val_p);
|
|
|
|
/* 4.b.ii.4.a */
|
|
if (class_name == LIT_MAGIC_STRING_NUMBER_UL
|
|
|| class_name == LIT_MAGIC_STRING_STRING_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_string (value),
|
|
ret_value);
|
|
|
|
item = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
}
|
|
|
|
/* 4.b.ii.5 */
|
|
if (!ecma_is_value_undefined (item))
|
|
{
|
|
if (!ecma_has_string_value_in_collection (context.property_list_p, item))
|
|
{
|
|
ecma_append_to_values_collection (context.property_list_p, item, 0);
|
|
ecma_deref_ecma_string (ecma_get_string_from_value (item));
|
|
}
|
|
else
|
|
{
|
|
ecma_free_value (item);
|
|
}
|
|
}
|
|
|
|
ECMA_FINALIZE (value);
|
|
|
|
ecma_deref_ecma_string (index_str_p);
|
|
|
|
index++;
|
|
}
|
|
|
|
ECMA_OP_TO_NUMBER_FINALIZE (array_length_num);
|
|
ECMA_FINALIZE (array_length);
|
|
}
|
|
}
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_value_t space = ecma_copy_value (arg3);
|
|
|
|
/* 5. */
|
|
if (ecma_is_value_object (arg3))
|
|
{
|
|
ecma_object_t *obj_p = ecma_get_object_from_value (arg3);
|
|
lit_magic_string_id_t class_name = ecma_object_get_class_name (obj_p);
|
|
|
|
/* 5.a */
|
|
if (class_name == LIT_MAGIC_STRING_NUMBER_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_number (arg3),
|
|
ret_value);
|
|
|
|
ecma_free_value (space);
|
|
space = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
/* 5.b */
|
|
else if (class_name == LIT_MAGIC_STRING_STRING_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_string (arg3),
|
|
ret_value);
|
|
|
|
ecma_free_value (space);
|
|
space = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
}
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
/* 6. */
|
|
if (ecma_is_value_number (space))
|
|
{
|
|
ECMA_OP_TO_NUMBER_TRY_CATCH (array_length_num,
|
|
arg3,
|
|
ret_value);
|
|
|
|
/* 6.a */
|
|
int32_t num_of_spaces = ecma_number_to_int32 (array_length_num);
|
|
num_of_spaces = (num_of_spaces > 10) ? 10 : num_of_spaces;
|
|
|
|
/* 6.b */
|
|
if (num_of_spaces < 1)
|
|
{
|
|
context.gap_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
}
|
|
else
|
|
{
|
|
JMEM_DEFINE_LOCAL_ARRAY (space_buff, num_of_spaces, char);
|
|
|
|
for (int32_t i = 0; i < num_of_spaces; i++)
|
|
{
|
|
space_buff[i] = LIT_CHAR_SP;
|
|
}
|
|
|
|
context.gap_str_p = ecma_new_ecma_string_from_utf8 ((lit_utf8_byte_t *) space_buff,
|
|
(lit_utf8_size_t) num_of_spaces);
|
|
|
|
JMEM_FINALIZE_LOCAL_ARRAY (space_buff);
|
|
}
|
|
|
|
ECMA_OP_TO_NUMBER_FINALIZE (array_length_num);
|
|
}
|
|
/* 7. */
|
|
else if (ecma_is_value_string (space))
|
|
{
|
|
ecma_string_t *space_str_p = ecma_get_string_from_value (space);
|
|
ecma_length_t num_of_chars = ecma_string_get_length (space_str_p);
|
|
|
|
if (num_of_chars < 10)
|
|
{
|
|
ecma_ref_ecma_string (space_str_p);
|
|
context.gap_str_p = space_str_p;
|
|
}
|
|
else
|
|
{
|
|
context.gap_str_p = ecma_string_substr (space_str_p, 0, 10);
|
|
}
|
|
}
|
|
/* 8. */
|
|
else
|
|
{
|
|
context.gap_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
|
|
}
|
|
}
|
|
|
|
ecma_free_value (space);
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
/* 9. */
|
|
ret_value = ecma_builtin_json_str_helper (arg1, context);
|
|
}
|
|
|
|
ecma_deref_ecma_string (context.gap_str_p);
|
|
}
|
|
|
|
ecma_deref_ecma_string (context.indent_str_p);
|
|
|
|
ecma_free_values_collection (context.property_list_p, 0);
|
|
|
|
return ret_value;
|
|
} /* ecma_builtin_json_stringify */
|
|
|
|
/**
|
|
* Abstract operation 'Quote' defined in 15.12.3
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.3
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_quote (ecma_string_t *string_p) /**< string that should be quoted*/
|
|
{
|
|
ECMA_STRING_TO_UTF8_STRING (string_p, string_buff, string_buff_size);
|
|
const lit_utf8_byte_t *str_p = string_buff;
|
|
const lit_utf8_byte_t *str_end_p = str_p + string_buff_size;
|
|
size_t n_bytes = 2; /* Start with 2 for surrounding quotes. */
|
|
|
|
while (str_p < str_end_p)
|
|
{
|
|
lit_utf8_byte_t c = *str_p++;
|
|
|
|
if (c == LIT_CHAR_BACKSLASH || c == LIT_CHAR_DOUBLE_QUOTE)
|
|
{
|
|
n_bytes += 2;
|
|
}
|
|
else if (c >= LIT_CHAR_SP && c < LIT_UTF8_1_BYTE_CODE_POINT_MAX)
|
|
{
|
|
n_bytes++;
|
|
}
|
|
else if (c > LIT_UTF8_1_BYTE_CODE_POINT_MAX)
|
|
{
|
|
lit_utf8_size_t sz = lit_get_unicode_char_size_by_utf8_first_byte (c);
|
|
n_bytes += sz;
|
|
str_p += sz - 1;
|
|
}
|
|
else
|
|
{
|
|
switch (c)
|
|
{
|
|
case LIT_CHAR_BS:
|
|
case LIT_CHAR_FF:
|
|
case LIT_CHAR_LF:
|
|
case LIT_CHAR_CR:
|
|
case LIT_CHAR_TAB:
|
|
{
|
|
n_bytes += 2;
|
|
break;
|
|
}
|
|
default: /* Hexadecimal. */
|
|
{
|
|
n_bytes += 2 + 4;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
lit_utf8_byte_t *buf_begin = jmem_heap_alloc_block (n_bytes);
|
|
JERRY_ASSERT (buf_begin != NULL);
|
|
lit_utf8_byte_t *buf = buf_begin;
|
|
str_p = string_buff;
|
|
|
|
*buf++ = LIT_CHAR_DOUBLE_QUOTE;
|
|
|
|
while (str_p < str_end_p)
|
|
{
|
|
lit_utf8_byte_t c = *str_p++;
|
|
|
|
if (c == LIT_CHAR_BACKSLASH || c == LIT_CHAR_DOUBLE_QUOTE)
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = c;
|
|
}
|
|
else if (c >= LIT_CHAR_SP && c < LIT_UTF8_1_BYTE_CODE_POINT_MAX)
|
|
{
|
|
*buf++ = c;
|
|
}
|
|
else if (c > LIT_UTF8_1_BYTE_CODE_POINT_MAX)
|
|
{
|
|
str_p--;
|
|
ecma_char_t current_char = lit_utf8_read_next (&str_p);
|
|
buf += lit_code_unit_to_utf8 (current_char, (lit_utf8_byte_t *) buf);
|
|
}
|
|
else
|
|
{
|
|
switch (c)
|
|
{
|
|
case LIT_CHAR_BS:
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_B;
|
|
break;
|
|
}
|
|
case LIT_CHAR_FF:
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_F;
|
|
break;
|
|
}
|
|
case LIT_CHAR_LF:
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_N;
|
|
break;
|
|
}
|
|
case LIT_CHAR_CR:
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_R;
|
|
break;
|
|
}
|
|
case LIT_CHAR_TAB:
|
|
{
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_T;
|
|
break;
|
|
}
|
|
default: /* Hexadecimal. */
|
|
{
|
|
JERRY_ASSERT (c < 0x9f);
|
|
*buf++ = LIT_CHAR_BACKSLASH;
|
|
*buf++ = LIT_CHAR_LOWERCASE_U;
|
|
*buf++ = LIT_CHAR_0;
|
|
*buf++ = LIT_CHAR_0;
|
|
*buf++ = (lit_utf8_byte_t) (LIT_CHAR_0 + (c >> 4)); /* Max range 0-9, hex digits unnecessary. */
|
|
lit_utf8_byte_t c2 = (c & 0xf);
|
|
*buf++ = (lit_utf8_byte_t) (c2 + ((c2 <= 9) ? LIT_CHAR_0 : (LIT_CHAR_LOWERCASE_A - 10)));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*buf++ = LIT_CHAR_DOUBLE_QUOTE;
|
|
|
|
/* Make sure we didn't run off the end or allocated more than we actually wanted. */
|
|
JERRY_ASSERT ((size_t) (buf - buf_begin) == n_bytes);
|
|
|
|
ecma_string_t *product_str_p = ecma_new_ecma_string_from_utf8 ((const lit_utf8_byte_t *) buf_begin,
|
|
(lit_utf8_size_t) (buf - buf_begin));
|
|
jmem_heap_free_block (buf_begin, n_bytes);
|
|
ECMA_FINALIZE_UTF8_STRING (string_buff, string_buff_size);
|
|
|
|
return ecma_make_string_value (product_str_p);
|
|
} /* ecma_builtin_json_quote */
|
|
|
|
/**
|
|
* Abstract operation 'Str' defined in 15.12.3
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.3
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_str (ecma_string_t *key_p, /**< property key*/
|
|
ecma_object_t *holder_p, /**< the object*/
|
|
ecma_json_stringify_context_t *context_p) /**< context*/
|
|
{
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
/* 1. */
|
|
ECMA_TRY_CATCH (value,
|
|
ecma_op_object_get (holder_p, key_p),
|
|
ret_value);
|
|
|
|
ecma_value_t my_val = ecma_copy_value (value);
|
|
|
|
/* 2. */
|
|
if (ecma_is_value_object (my_val))
|
|
{
|
|
ecma_object_t *value_obj_p = ecma_get_object_from_value (my_val);
|
|
|
|
/* 2.a */
|
|
ECMA_TRY_CATCH (toJSON,
|
|
ecma_op_object_get_by_magic_id (value_obj_p, LIT_MAGIC_STRING_TO_JSON_UL),
|
|
ret_value);
|
|
|
|
/* 2.b */
|
|
if (ecma_op_is_callable (toJSON))
|
|
{
|
|
ecma_value_t key_value = ecma_make_string_value (key_p);
|
|
ecma_value_t call_args[] = { key_value };
|
|
ecma_object_t *toJSON_obj_p = ecma_get_object_from_value (toJSON);
|
|
|
|
ECMA_TRY_CATCH (func_ret_val,
|
|
ecma_op_function_call (toJSON_obj_p, my_val, call_args, 1),
|
|
ret_value);
|
|
|
|
ecma_free_value (my_val);
|
|
my_val = ecma_copy_value (func_ret_val);
|
|
|
|
ECMA_FINALIZE (func_ret_val);
|
|
}
|
|
|
|
ECMA_FINALIZE (toJSON);
|
|
}
|
|
|
|
/* 3. */
|
|
if (context_p->replacer_function_p && ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_value_t holder_value = ecma_make_object_value (holder_p);
|
|
ecma_value_t key_value = ecma_make_string_value (key_p);
|
|
ecma_value_t call_args[] = { key_value, my_val };
|
|
|
|
ECMA_TRY_CATCH (func_ret_val,
|
|
ecma_op_function_call (context_p->replacer_function_p, holder_value, call_args, 2),
|
|
ret_value);
|
|
|
|
ecma_free_value (my_val);
|
|
my_val = ecma_copy_value (func_ret_val);
|
|
|
|
ECMA_FINALIZE (func_ret_val);
|
|
}
|
|
|
|
/* 4. */
|
|
if (ecma_is_value_object (my_val) && ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_object_t *obj_p = ecma_get_object_from_value (my_val);
|
|
lit_magic_string_id_t class_name = ecma_object_get_class_name (obj_p);
|
|
|
|
/* 4.a */
|
|
if (class_name == LIT_MAGIC_STRING_NUMBER_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_number (my_val),
|
|
ret_value);
|
|
|
|
ecma_free_value (my_val);
|
|
my_val = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
/* 4.b */
|
|
else if (class_name == LIT_MAGIC_STRING_STRING_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_string (my_val),
|
|
ret_value);
|
|
|
|
ecma_free_value (my_val);
|
|
my_val = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
/* 4.c */
|
|
else if (class_name == LIT_MAGIC_STRING_BOOLEAN_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_op_to_primitive (my_val, ECMA_PREFERRED_TYPE_NO),
|
|
ret_value);
|
|
|
|
ecma_free_value (my_val);
|
|
my_val = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
}
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
/* 5. - 7. */
|
|
if (ecma_is_value_null (my_val) || ecma_is_value_boolean (my_val))
|
|
{
|
|
ret_value = ecma_op_to_string (my_val);
|
|
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (ret_value));
|
|
}
|
|
/* 8. */
|
|
else if (ecma_is_value_string (my_val))
|
|
{
|
|
ecma_string_t *value_str_p = ecma_get_string_from_value (my_val);
|
|
ret_value = ecma_builtin_json_quote (value_str_p);
|
|
}
|
|
/* 9. */
|
|
else if (ecma_is_value_number (my_val))
|
|
{
|
|
ecma_number_t num_value_p = ecma_get_number_from_value (my_val);
|
|
|
|
/* 9.a */
|
|
if (!ecma_number_is_nan (num_value_p) && !ecma_number_is_infinity (num_value_p))
|
|
{
|
|
ret_value = ecma_op_to_string (my_val);
|
|
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (ret_value));
|
|
}
|
|
else
|
|
{
|
|
/* 9.b */
|
|
ret_value = ecma_make_magic_string_value (LIT_MAGIC_STRING_NULL);
|
|
}
|
|
}
|
|
/* 10. */
|
|
else if (ecma_is_value_object (my_val) && !ecma_op_is_callable (my_val))
|
|
{
|
|
ecma_object_t *obj_p = ecma_get_object_from_value (my_val);
|
|
lit_magic_string_id_t class_name = ecma_object_get_class_name (obj_p);
|
|
|
|
/* 10.a */
|
|
if (class_name == LIT_MAGIC_STRING_ARRAY_UL)
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_builtin_json_array (obj_p, context_p),
|
|
ret_value);
|
|
|
|
ret_value = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
/* 10.b */
|
|
else
|
|
{
|
|
ECMA_TRY_CATCH (val,
|
|
ecma_builtin_json_object (obj_p, context_p),
|
|
ret_value);
|
|
|
|
ret_value = ecma_copy_value (val);
|
|
|
|
ECMA_FINALIZE (val);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* 11. */
|
|
ret_value = ECMA_VALUE_UNDEFINED;
|
|
}
|
|
}
|
|
|
|
ecma_free_value (my_val);
|
|
ECMA_FINALIZE (value);
|
|
|
|
return ret_value;
|
|
} /* ecma_builtin_json_str */
|
|
|
|
/**
|
|
* Abstract operation 'JO' defined in 15.12.3
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.3
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_object (ecma_object_t *obj_p, /**< the object*/
|
|
ecma_json_stringify_context_t *context_p) /**< context*/
|
|
{
|
|
/* 1. */
|
|
if (ecma_json_has_object_in_stack (context_p->occurence_stack_last_p, obj_p))
|
|
{
|
|
return ecma_raise_type_error (ECMA_ERR_MSG ("The structure is cyclical."));
|
|
}
|
|
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
/* 2. */
|
|
ecma_json_occurence_stack_item_t stack_item;
|
|
stack_item.next_p = context_p->occurence_stack_last_p;
|
|
stack_item.object_p = obj_p;
|
|
context_p->occurence_stack_last_p = &stack_item;
|
|
|
|
/* 3. */
|
|
ecma_string_t *stepback_p = context_p->indent_str_p;
|
|
|
|
/* 4. */
|
|
ecma_ref_ecma_string (stepback_p);
|
|
context_p->indent_str_p = ecma_concat_ecma_strings (stepback_p, context_p->gap_str_p);
|
|
|
|
ecma_collection_header_t *property_keys_p;
|
|
|
|
/* 5. */
|
|
if (context_p->property_list_p->item_count > 0)
|
|
{
|
|
property_keys_p = context_p->property_list_p;
|
|
}
|
|
/* 6. */
|
|
else
|
|
{
|
|
property_keys_p = ecma_new_values_collection ();
|
|
|
|
ecma_collection_header_t *props_p = ecma_op_object_get_property_names (obj_p, false, true, false);
|
|
|
|
ecma_value_t *ecma_value_p = ecma_collection_iterator_init (props_p);
|
|
|
|
while (ecma_value_p != NULL)
|
|
{
|
|
ecma_string_t *property_name_p = ecma_get_string_from_value (*ecma_value_p);
|
|
|
|
ecma_property_t property = ecma_op_object_get_own_property (obj_p,
|
|
property_name_p,
|
|
NULL,
|
|
ECMA_PROPERTY_GET_NO_OPTIONS);
|
|
|
|
JERRY_ASSERT (ecma_is_property_enumerable (property));
|
|
|
|
if (ECMA_PROPERTY_GET_TYPE (property) == ECMA_PROPERTY_TYPE_NAMEDDATA
|
|
|| ECMA_PROPERTY_GET_TYPE (property) == ECMA_PROPERTY_TYPE_VIRTUAL)
|
|
{
|
|
ecma_append_to_values_collection (property_keys_p, *ecma_value_p, 0);
|
|
}
|
|
|
|
ecma_value_p = ecma_collection_iterator_next (ecma_value_p);
|
|
}
|
|
|
|
ecma_free_values_collection (props_p, 0);
|
|
}
|
|
|
|
/* 7. */
|
|
ecma_collection_header_t *partial_p = ecma_new_values_collection ();
|
|
|
|
/* 8. */
|
|
ecma_value_t *ecma_value_p = ecma_collection_iterator_init (property_keys_p);
|
|
|
|
while (ecma_value_p != NULL && ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_string_t *key_p = ecma_get_string_from_value (*ecma_value_p);
|
|
ecma_value_p = ecma_collection_iterator_next (ecma_value_p);
|
|
|
|
/* 8.a */
|
|
ECMA_TRY_CATCH (str_val,
|
|
ecma_builtin_json_str (key_p, obj_p, context_p),
|
|
ret_value);
|
|
|
|
/* 8.b */
|
|
if (!ecma_is_value_undefined (str_val))
|
|
{
|
|
ecma_string_t *value_str_p = ecma_get_string_from_value (str_val);
|
|
|
|
/* 8.b.i */
|
|
ecma_value_t str_comp_val = ecma_builtin_json_quote (key_p);
|
|
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (str_comp_val));
|
|
|
|
ecma_string_t *member_str_p = ecma_get_string_from_value (str_comp_val);
|
|
|
|
/* 8.b.ii */
|
|
member_str_p = ecma_append_magic_string_to_string (member_str_p, LIT_MAGIC_STRING_COLON_CHAR);
|
|
|
|
/* 8.b.iii */
|
|
if (!ecma_string_is_empty (context_p->gap_str_p))
|
|
{
|
|
member_str_p = ecma_append_magic_string_to_string (member_str_p, LIT_MAGIC_STRING_SPACE_CHAR);
|
|
}
|
|
|
|
/* 8.b.iv */
|
|
member_str_p = ecma_concat_ecma_strings (member_str_p, value_str_p);
|
|
|
|
/* 8.b.v */
|
|
ecma_value_t member_value = ecma_make_string_value (member_str_p);
|
|
ecma_append_to_values_collection (partial_p, member_value, 0);
|
|
ecma_deref_ecma_string (member_str_p);
|
|
}
|
|
|
|
ECMA_FINALIZE (str_val);
|
|
}
|
|
|
|
if (context_p->property_list_p->item_count == 0)
|
|
{
|
|
ecma_free_values_collection (property_keys_p, 0);
|
|
}
|
|
|
|
if (!ecma_is_value_empty (ret_value))
|
|
{
|
|
ecma_free_values_collection (partial_p, 0);
|
|
ecma_deref_ecma_string (stepback_p);
|
|
return ret_value;
|
|
}
|
|
|
|
/* 9. */
|
|
if (partial_p->item_count == 0)
|
|
{
|
|
lit_utf8_byte_t chars[2] = { LIT_CHAR_LEFT_BRACE, LIT_CHAR_RIGHT_BRACE };
|
|
|
|
ecma_string_t *final_str_p = ecma_new_ecma_string_from_utf8 (chars, 2);
|
|
ret_value = ecma_make_string_value (final_str_p);
|
|
}
|
|
/* 10. */
|
|
else
|
|
{
|
|
/* 10.a */
|
|
if (ecma_string_is_empty (context_p->gap_str_p))
|
|
{
|
|
ret_value = ecma_builtin_helper_json_create_non_formatted_json (LIT_CHAR_LEFT_BRACE,
|
|
LIT_CHAR_RIGHT_BRACE,
|
|
partial_p);
|
|
}
|
|
/* 10.b */
|
|
else
|
|
{
|
|
ret_value = ecma_builtin_helper_json_create_formatted_json (LIT_CHAR_LEFT_BRACE,
|
|
LIT_CHAR_RIGHT_BRACE,
|
|
stepback_p,
|
|
partial_p,
|
|
context_p);
|
|
}
|
|
}
|
|
|
|
ecma_free_values_collection (partial_p, 0);
|
|
|
|
/* 11. */
|
|
context_p->occurence_stack_last_p = stack_item.next_p;
|
|
|
|
/* 12. */
|
|
ecma_deref_ecma_string (context_p->indent_str_p);
|
|
context_p->indent_str_p = stepback_p;
|
|
|
|
/* 13. */
|
|
return ret_value;
|
|
} /* ecma_builtin_json_object */
|
|
|
|
/**
|
|
* Abstract operation 'JA' defined in 15.12.3
|
|
*
|
|
* See also:
|
|
* ECMA-262 v5, 15.12.3
|
|
*
|
|
* @return ecma value
|
|
* Returned value must be freed with ecma_free_value.
|
|
*/
|
|
static ecma_value_t
|
|
ecma_builtin_json_array (ecma_object_t *obj_p, /**< the array object*/
|
|
ecma_json_stringify_context_t *context_p) /**< context*/
|
|
{
|
|
/* 1. */
|
|
if (ecma_json_has_object_in_stack (context_p->occurence_stack_last_p, obj_p))
|
|
{
|
|
return ecma_raise_type_error (ECMA_ERR_MSG ("The structure is cyclical."));
|
|
}
|
|
|
|
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
|
|
|
|
/* 2. */
|
|
ecma_json_occurence_stack_item_t stack_item;
|
|
stack_item.next_p = context_p->occurence_stack_last_p;
|
|
stack_item.object_p = obj_p;
|
|
context_p->occurence_stack_last_p = &stack_item;
|
|
|
|
/* 3. */
|
|
ecma_string_t *stepback_p = context_p->indent_str_p;
|
|
|
|
/* 4. */
|
|
ecma_ref_ecma_string (stepback_p);
|
|
context_p->indent_str_p = ecma_concat_ecma_strings (stepback_p, context_p->gap_str_p);
|
|
|
|
/* 5. */
|
|
ecma_collection_header_t *partial_p = ecma_new_values_collection ();
|
|
|
|
/* 6. */
|
|
ECMA_TRY_CATCH (array_length,
|
|
ecma_op_object_get_by_magic_id (obj_p, LIT_MAGIC_STRING_LENGTH),
|
|
ret_value);
|
|
|
|
ECMA_OP_TO_NUMBER_TRY_CATCH (array_length_num,
|
|
array_length,
|
|
ret_value);
|
|
|
|
/* 7. - 8. */
|
|
for (uint32_t index = 0;
|
|
index < ecma_number_to_uint32 (array_length_num) && ecma_is_value_empty (ret_value);
|
|
index++)
|
|
{
|
|
|
|
/* 8.a */
|
|
ecma_string_t *index_str_p = ecma_new_ecma_string_from_uint32 (index);
|
|
|
|
ECMA_TRY_CATCH (str_val,
|
|
ecma_builtin_json_str (index_str_p, obj_p, context_p),
|
|
ret_value);
|
|
|
|
/* 8.b */
|
|
if (ecma_is_value_undefined (str_val))
|
|
{
|
|
ecma_append_to_values_collection (partial_p, ecma_make_magic_string_value (LIT_MAGIC_STRING_NULL), 0);
|
|
}
|
|
/* 8.c */
|
|
else
|
|
{
|
|
ecma_append_to_values_collection (partial_p, str_val, 0);
|
|
}
|
|
|
|
ECMA_FINALIZE (str_val);
|
|
ecma_deref_ecma_string (index_str_p);
|
|
}
|
|
|
|
if (ecma_is_value_empty (ret_value))
|
|
{
|
|
/* 9. */
|
|
if (partial_p->item_count == 0)
|
|
{
|
|
lit_utf8_byte_t chars[2] = { LIT_CHAR_LEFT_SQUARE, LIT_CHAR_RIGHT_SQUARE };
|
|
|
|
ecma_string_t *final_str_p = ecma_new_ecma_string_from_utf8 (chars, 2);
|
|
ret_value = ecma_make_string_value (final_str_p);
|
|
}
|
|
/* 10. */
|
|
else
|
|
{
|
|
/* 10.a */
|
|
if (ecma_string_is_empty (context_p->gap_str_p))
|
|
{
|
|
ret_value = ecma_builtin_helper_json_create_non_formatted_json (LIT_CHAR_LEFT_SQUARE,
|
|
LIT_CHAR_RIGHT_SQUARE,
|
|
partial_p);
|
|
}
|
|
/* 10.b */
|
|
else
|
|
{
|
|
ret_value = ecma_builtin_helper_json_create_formatted_json (LIT_CHAR_LEFT_SQUARE,
|
|
LIT_CHAR_RIGHT_SQUARE,
|
|
stepback_p,
|
|
partial_p,
|
|
context_p);
|
|
}
|
|
}
|
|
}
|
|
|
|
ECMA_OP_TO_NUMBER_FINALIZE (array_length_num);
|
|
ECMA_FINALIZE (array_length);
|
|
|
|
ecma_free_values_collection (partial_p, 0);
|
|
|
|
/* 11. */
|
|
context_p->occurence_stack_last_p = stack_item.next_p;
|
|
|
|
/* 12. */
|
|
ecma_deref_ecma_string (context_p->indent_str_p);
|
|
context_p->indent_str_p = stepback_p;
|
|
|
|
/* 13. */
|
|
return ret_value;
|
|
} /* ecma_builtin_json_array */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
* @}
|
|
*/
|
|
|
|
#endif /* !CONFIG_DISABLE_JSON_BUILTIN */
|