mirror of
https://github.com/php/php-src.git
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362 lines
7.8 KiB
Plaintext
362 lines
7.8 KiB
Plaintext
%code top {
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/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2018 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Jakub Zelenka <bukka@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include "php_json.h"
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#include "php_json_parser.h"
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#define YYDEBUG 0
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#if YYDEBUG
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int json_yydebug = 1;
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#endif
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#ifdef _MSC_VER
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#define YYMALLOC malloc
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#define YYFREE free
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#endif
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#define PHP_JSON_USE(uv) ((void) (uv))
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#define PHP_JSON_USE_1(uvr, uv1) PHP_JSON_USE(uvr); PHP_JSON_USE(uv1)
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#define PHP_JSON_USE_2(uvr, uv1, uv2) PHP_JSON_USE(uvr); PHP_JSON_USE(uv1); PHP_JSON_USE(uv2)
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#define PHP_JSON_DEPTH_DEC --parser->depth
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#define PHP_JSON_DEPTH_INC \
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if (parser->max_depth && parser->depth >= parser->max_depth) { \
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parser->scanner.errcode = PHP_JSON_ERROR_DEPTH; \
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YYERROR; \
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} \
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++parser->depth
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}
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%pure-parser
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%name-prefix "php_json_yy"
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%lex-param { php_json_parser *parser }
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%parse-param { php_json_parser *parser }
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%union {
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zval value;
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struct {
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zend_string *key;
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zval val;
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} pair;
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}
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%token <value> PHP_JSON_T_NUL
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%token <value> PHP_JSON_T_TRUE
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%token <value> PHP_JSON_T_FALSE
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%token <value> PHP_JSON_T_INT
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%token <value> PHP_JSON_T_DOUBLE
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%token <value> PHP_JSON_T_STRING
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%token <value> PHP_JSON_T_ESTRING
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%token <value> PHP_JSON_T_EOI
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%token <value> PHP_JSON_T_ERROR
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%type <value> start object key value array errlex
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%type <value> members member elements element
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%type <pair> pair
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%destructor { zval_ptr_dtor_nogc(&$$); } <value>
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%destructor { zend_string_release_ex($$.key, 0); zval_ptr_dtor_nogc(&$$.val); } <pair>
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%code {
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static int php_json_yylex(union YYSTYPE *value, php_json_parser *parser);
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static void php_json_yyerror(php_json_parser *parser, char const *msg);
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}
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%% /* Rules */
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start:
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value PHP_JSON_T_EOI
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{
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ZVAL_COPY_VALUE(&$$, &$1);
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ZVAL_COPY_VALUE(parser->return_value, &$1);
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PHP_JSON_USE($2); YYACCEPT;
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}
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| value errlex
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{
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PHP_JSON_USE_2($$, $1, $2);
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}
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;
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object:
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'{'
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{
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PHP_JSON_DEPTH_INC;
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if (parser->methods.object_start && FAILURE == parser->methods.object_start(parser)) {
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YYERROR;
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}
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}
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members object_end
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{
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ZVAL_COPY_VALUE(&$$, &$3);
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PHP_JSON_DEPTH_DEC;
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if (parser->methods.object_end && FAILURE == parser->methods.object_end(parser, &$$)) {
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YYERROR;
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}
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}
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;
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object_end:
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'}'
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| ']'
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{
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parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH;
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YYERROR;
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}
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;
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members:
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/* empty */
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{
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parser->methods.object_create(parser, &$$);
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}
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| member
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;
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member:
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pair
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{
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parser->methods.object_create(parser, &$$);
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if (parser->methods.object_update(parser, &$$, $1.key, &$1.val) == FAILURE) {
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YYERROR;
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}
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}
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| member ',' pair
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{
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if (parser->methods.object_update(parser, &$1, $3.key, &$3.val) == FAILURE) {
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YYERROR;
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}
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ZVAL_COPY_VALUE(&$$, &$1);
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}
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| member errlex
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{
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PHP_JSON_USE_2($$, $1, $2);
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}
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;
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pair:
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key ':' value
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{
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$$.key = Z_STR($1);
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ZVAL_COPY_VALUE(&$$.val, &$3);
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}
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| key errlex
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{
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PHP_JSON_USE_2($$, $1, $2);
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}
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;
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array:
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'['
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{
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PHP_JSON_DEPTH_INC;
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if (parser->methods.array_start && FAILURE == parser->methods.array_start(parser)) {
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YYERROR;
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}
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}
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elements array_end
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{
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ZVAL_COPY_VALUE(&$$, &$3);
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PHP_JSON_DEPTH_DEC;
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if (parser->methods.array_end && FAILURE == parser->methods.array_end(parser, &$$)) {
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YYERROR;
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}
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}
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;
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array_end:
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']'
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| '}'
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{
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parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH;
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YYERROR;
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}
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;
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elements:
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/* empty */
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{
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parser->methods.array_create(parser, &$$);
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}
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| element
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;
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element:
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value
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{
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parser->methods.array_create(parser, &$$);
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parser->methods.array_append(parser, &$$, &$1);
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}
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| element ',' value
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{
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parser->methods.array_append(parser, &$1, &$3);
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ZVAL_COPY_VALUE(&$$, &$1);
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}
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| element errlex
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{
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PHP_JSON_USE_2($$, $1, $2);
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}
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;
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key:
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PHP_JSON_T_STRING
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| PHP_JSON_T_ESTRING
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;
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value:
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object
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| array
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| PHP_JSON_T_STRING
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| PHP_JSON_T_ESTRING
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| PHP_JSON_T_INT
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| PHP_JSON_T_DOUBLE
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| PHP_JSON_T_NUL
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| PHP_JSON_T_TRUE
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| PHP_JSON_T_FALSE
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| errlex
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;
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errlex:
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PHP_JSON_T_ERROR
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{
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PHP_JSON_USE_1($$, $1);
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YYERROR;
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}
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;
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%% /* Functions */
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static int php_json_parser_array_create(php_json_parser *parser, zval *array)
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{
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array_init(array);
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return SUCCESS;
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}
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static int php_json_parser_array_append(php_json_parser *parser, zval *array, zval *zvalue)
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{
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zend_hash_next_index_insert(Z_ARRVAL_P(array), zvalue);
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return SUCCESS;
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}
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static int php_json_parser_object_create(php_json_parser *parser, zval *object)
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{
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if (parser->scanner.options & PHP_JSON_OBJECT_AS_ARRAY) {
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array_init(object);
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return SUCCESS;
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} else {
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return object_init(object);
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}
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}
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static int php_json_parser_object_update(php_json_parser *parser, zval *object, zend_string *key, zval *zvalue)
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{
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/* if JSON_OBJECT_AS_ARRAY is set */
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if (Z_TYPE_P(object) == IS_ARRAY) {
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zend_symtable_update(Z_ARRVAL_P(object), key, zvalue);
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} else {
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zval zkey;
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if (ZSTR_LEN(key) > 0 && ZSTR_VAL(key)[0] == '\0') {
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parser->scanner.errcode = PHP_JSON_ERROR_INVALID_PROPERTY_NAME;
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zend_string_release_ex(key, 0);
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zval_ptr_dtor_nogc(zvalue);
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zval_ptr_dtor_nogc(object);
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return FAILURE;
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}
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ZVAL_NEW_STR(&zkey, key);
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zend_std_write_property(object, &zkey, zvalue, NULL);
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Z_TRY_DELREF_P(zvalue);
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}
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zend_string_release_ex(key, 0);
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return SUCCESS;
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}
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static int php_json_yylex(union YYSTYPE *value, php_json_parser *parser)
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{
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int token = php_json_scan(&parser->scanner);
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value->value = parser->scanner.value;
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return token;
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}
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static void php_json_yyerror(php_json_parser *parser, char const *msg)
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{
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if (!parser->scanner.errcode) {
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parser->scanner.errcode = PHP_JSON_ERROR_SYNTAX;
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}
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}
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PHP_JSON_API php_json_error_code php_json_parser_error_code(const php_json_parser *parser)
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{
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return parser->scanner.errcode;
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}
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static const php_json_parser_methods default_parser_methods =
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{
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php_json_parser_array_create,
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php_json_parser_array_append,
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NULL,
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NULL,
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php_json_parser_object_create,
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php_json_parser_object_update,
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NULL,
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NULL,
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};
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PHP_JSON_API void php_json_parser_init_ex(php_json_parser *parser,
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zval *return_value,
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char *str,
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size_t str_len,
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int options,
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int max_depth,
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const php_json_parser_methods *parser_methods)
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{
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memset(parser, 0, sizeof(php_json_parser));
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php_json_scanner_init(&parser->scanner, str, str_len, options);
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parser->depth = 1;
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parser->max_depth = max_depth;
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parser->return_value = return_value;
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memcpy(&parser->methods, parser_methods, sizeof(php_json_parser_methods));
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}
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PHP_JSON_API void php_json_parser_init(php_json_parser *parser,
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zval *return_value,
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char *str,
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size_t str_len,
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int options,
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int max_depth)
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{
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php_json_parser_init_ex(
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parser,
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return_value,
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str,
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str_len,
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options,
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max_depth,
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&default_parser_methods);
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}
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PHP_JSON_API int php_json_parse(php_json_parser *parser)
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{
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return php_json_yyparse(parser);
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}
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