forked from bukka/php-jsond
-
Notifications
You must be signed in to change notification settings - Fork 0
/
jsond_parser.y
242 lines (202 loc) · 6.78 KB
/
jsond_parser.y
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
%code top {
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jakub Zelenka <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "php_jsond.h"
#include "php_jsond_parser.h"
#define YYDEBUG 0
#if YYDEBUG
int json_yydebug = 1;
#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)
}
%pure-parser
%name-prefix "php_json_yy"
%lex-param { php_json_parser *parser }
%parse-param { php_json_parser *parser }
%union {
zval value;
struct {
zval key;
zval val;
} pair;
HashTable *ht;
}
%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 <ht> members member elements element
%type <pair> pair
%destructor { zval_dtor(&$$); } <value>
%destructor { zend_hash_destroy($$); FREE_HASHTABLE($$); } <ht>
%destructor { zval_dtor(&$$.key); zval_dtor(&$$.val); } <pair>
%code {
int php_json_yylex(union YYSTYPE *value, php_json_parser *parser);
void php_json_yyerror(php_json_parser *parser, char const *msg);
void php_json_parser_object_to_zval(php_json_parser *parser, zval *zv, HashTable *ht);
void php_json_parser_array_to_zval(zval *zv, HashTable *ht);
void php_json_parser_ht_init(HashTable **ht, uint nSize);
void php_json_parser_ht_update(php_json_parser *parser, HashTable *ht, zval *zkey, zval *zvalue);
void php_json_parser_ht_append(HashTable *ht, zval *zvalue);
#define PHP_JSON_DEPTH_DEC --parser->depth
#define PHP_JSON_DEPTH_INC \
if (parser->max_depth && parser->depth >= parser->max_depth) { \
parser->scanner.errcode = PHP_JSON_ERROR_DEPTH; \
YYERROR; \
} \
++parser->depth
}
%% /* Rules */
start:
value PHP_JSON_T_EOI { $$ = $1; INIT_PZVAL_COPY(parser->return_value, &$1); PHP_JSON_USE($2); YYACCEPT; }
| value errlex { PHP_JSON_USE_2($$, $1, $2); }
;
object:
'{' { PHP_JSON_DEPTH_INC; } members object_end { PHP_JSON_DEPTH_DEC; php_json_parser_object_to_zval(parser, &$$, $3); }
;
object_end:
'}'
| ']' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
;
members:
/* empty */ { php_json_parser_ht_init(&$$, 0); }
| member
;
member:
pair { php_json_parser_ht_init(&$$, 4); php_json_parser_ht_update(parser, $$, &$1.key, &$1.val); }
| member ',' pair { php_json_parser_ht_update(parser, $1, &$3.key, &$3.val); $$ = $1; }
| member errlex { PHP_JSON_USE_2($$, $1, $2); }
;
pair:
key ':' value { $$.key = $1; $$.val = $3; }
| key errlex { PHP_JSON_USE_2($$, $1, $2); }
;
array:
'[' { PHP_JSON_DEPTH_INC; } elements array_end { PHP_JSON_DEPTH_DEC; php_json_parser_array_to_zval(&$$, $3); }
;
array_end:
']'
| '}' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
;
elements:
/* empty */ { php_json_parser_ht_init(&$$, 0); }
| element
;
element:
value { php_json_parser_ht_init(&$$, 4); php_json_parser_ht_append($$, &$1); }
| element ',' value { php_json_parser_ht_append($1, &$3); $$ = $1; }
| element errlex { PHP_JSON_USE_2($$, $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 */
void php_json_parser_init(php_json_parser *parser, zval *return_value, char *str, int str_len, long options, long max_depth TSRMLS_DC)
{
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;
TSRMLS_SET_CTX(parser->zts_ctx);
}
php_json_error_code php_json_parser_error_code(php_json_parser *parser)
{
return parser->scanner.errcode;
}
void php_json_parser_object_to_zval(php_json_parser *parser, zval *zv, HashTable *ht)
{
TSRMLS_FETCH_FROM_CTX(parser->zts_ctx);
if (parser->scanner.options & PHP_JSON_OBJECT_AS_ARRAY) {
php_json_parser_array_to_zval(zv, ht);
} else {
object_and_properties_init(zv, zend_standard_class_def, ht);
}
}
void php_json_parser_array_to_zval(zval *zv, HashTable *ht)
{
Z_TYPE_P(zv) = IS_ARRAY;
Z_ARRVAL_P(zv) = ht;
}
void php_json_parser_ht_init(HashTable **ht, uint nSize)
{
ALLOC_HASHTABLE(*ht);
zend_hash_init(*ht, nSize, NULL, ZVAL_PTR_DTOR, 0);
}
void php_json_parser_ht_update(php_json_parser *parser, HashTable *ht, zval *zkey, zval *zvalue)
{
zval *data;
char *key = Z_STRVAL_P(zkey);
int key_len = Z_STRLEN_P(zkey)+1;
MAKE_STD_ZVAL(data);
ZVAL_ZVAL(data, zvalue, 0, 0);
if (parser->scanner.options & PHP_JSON_OBJECT_AS_ARRAY) {
zend_symtable_update(ht, key, key_len, &data, sizeof(zval *), NULL);
} else {
if (key_len == 1) {
key = "_empty_";
key_len = sizeof("_empty_");
}
zend_hash_update(ht, key, key_len, &data, sizeof(zval *), NULL);
}
zval_dtor(zkey);
}
void php_json_parser_ht_append(HashTable *ht, zval *zvalue)
{
zval *data;
MAKE_STD_ZVAL(data);
ZVAL_ZVAL(data, zvalue, 0, 0);
zend_hash_next_index_insert(ht, &data, sizeof(zval *), NULL);
}
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;
}
void php_json_yyerror(php_json_parser *parser, char const *msg)
{
if (!parser->scanner.errcode) {
parser->scanner.errcode = PHP_JSON_ERROR_SYNTAX;
}
}