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76fb02123f
1. use zend_string in key 2. use faster APIs 3. use ZVAL_COPY_VALUE instead of assignment (save u2 copy)
231 lines
6.5 KiB
Text
231 lines
6.5 KiB
Text
%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) 1997-2015 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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}
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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_dtor(&$$); } <value>
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%destructor { zend_string_release($$.key); zval_dtor(&$$.val); } <pair>
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%code {
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int php_json_yylex(union YYSTYPE *value, php_json_parser *parser);
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void php_json_yyerror(php_json_parser *parser, char const *msg);
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void php_json_parser_object_init(php_json_parser *parser, zval *object);
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void php_json_parser_object_update(php_json_parser *parser, zval *object, zend_string *key, zval *zvalue);
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void php_json_parser_array_init(zval *object);
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void php_json_parser_array_append(zval *array, zval *zvalue);
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#define PHP_JSON_DEPTH_DEC --parser->depth
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#define PHP_JSON_DEPTH_INC \
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if (parser->max_depth && parser->depth >= parser->max_depth) { \
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parser->scanner.errcode = PHP_JSON_ERROR_DEPTH; \
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YYERROR; \
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} \
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++parser->depth
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}
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%% /* Rules */
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start:
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value PHP_JSON_T_EOI { ZVAL_COPY_VALUE(&$$, &$1); ZVAL_COPY_VALUE(parser->return_value, &$1); PHP_JSON_USE($2); YYACCEPT; }
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| value errlex { PHP_JSON_USE_2($$, $1, $2); }
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;
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object:
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'{' { PHP_JSON_DEPTH_INC; } members object_end { PHP_JSON_DEPTH_DEC; $$ = $3; }
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;
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object_end:
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'}'
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| ']' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
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;
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members:
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/* empty */ { php_json_parser_object_init(parser, &$$); }
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| member
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;
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member:
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pair { php_json_parser_object_init(parser, &$$); php_json_parser_object_update(parser, &$$, $1.key, &$1.val); }
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| member ',' pair { php_json_parser_object_update(parser, &$1, $3.key, &$3.val); ZVAL_COPY_VALUE(&$$, &$1); }
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| member errlex { PHP_JSON_USE_2($$, $1, $2); }
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;
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pair:
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key ':' value { $$.key = Z_STR($1); ZVAL_COPY_VALUE(&$$.val, &$3); }
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| key errlex { PHP_JSON_USE_2($$, $1, $2); }
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;
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array:
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'[' { PHP_JSON_DEPTH_INC; } elements array_end { PHP_JSON_DEPTH_DEC; ZVAL_COPY_VALUE(&$$, &$3); }
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;
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array_end:
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']'
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| '}' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
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;
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elements:
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/* empty */ { php_json_parser_array_init(&$$); }
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| element
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;
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element:
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value { php_json_parser_array_init(&$$); php_json_parser_array_append(&$$, &$1); }
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| element ',' value { php_json_parser_array_append(&$1, &$3); ZVAL_COPY_VALUE(&$$, &$1); }
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| element errlex { PHP_JSON_USE_2($$, $1, $2); }
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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 { PHP_JSON_USE_1($$, $1); YYERROR; }
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;
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%% /* Functions */
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void php_json_parser_init(php_json_parser *parser, zval *return_value, char *str, size_t str_len, int options, int max_depth)
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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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}
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php_json_error_code php_json_parser_error_code(php_json_parser *parser)
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{
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return parser->scanner.errcode;
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}
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void php_json_parser_object_init(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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} else {
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object_init(object);
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}
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}
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void 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 (Z_TYPE_P(object) == IS_ARRAY/*parser->scanner.options & PHP_JSON_OBJECT_AS_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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/* ZEND_ASSERT(Z_TYPE_P(object) == IS_OBJECT); */
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if (key->len == 0) {
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zend_string_release(key);
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key = zend_string_init("_empty_", sizeof("_empty_") - 1, 0);
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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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if (Z_REFCOUNTED_P(zvalue)) {
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Z_DELREF_P(zvalue);
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}
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}
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zend_string_release(key);
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}
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void php_json_parser_array_init(zval *array)
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{
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array_init(array);
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}
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void php_json_parser_array_append(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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}
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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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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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