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