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573b460 @andigutmans Zend Library
andigutmans authored
1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998, 1999 Andi Gutmans, Zeev Suraski |
6 +----------------------------------------------------------------------+
7 | This source file is subject to the Zend license, that is bundled |
8 | with this package in the file LICENSE. If you did not receive a |
9 | copy of the Zend license, please mail us at zend@zend.com so we can |
10 | send you a copy immediately. |
11 +----------------------------------------------------------------------+
12 | Authors: Andi Gutmans <andi@zend.com> |
13 | Zeev Suraski <zeev@zend.com> |
14 +----------------------------------------------------------------------+
15 */
16
17 #ifndef _COMPILE_H
18 #define _COMPILE_H
19
20 #include "zend.h"
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21
22 #if HAVE_STDARG_H
23 #include <stdarg.h>
24 #endif
25
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26 #include "zend_llist.h"
27 #define YYSTYPE znode
28 #include "zend-parser.h"
29
30 #define DEBUG_ZEND 0
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31
32 #ifndef ZTS
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33 #define SUPPORT_INTERACTIVE 1
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34 #else
35 #define SUPPORT_INTERACTIVE 0
36 #endif
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37
38 #define FREE_PNODE(znode) zval_dtor(&znode->u.constant);
39 #define FREE_OP(op, should_free) if (should_free) zval_dtor(&Ts[(op)->u.var].tmp_var);
40
41
42 #if SUPPORT_INTERACTIVE
43 #define INC_BPC(op_array) ((op_array)->backpatch_count++)
44 #define DEC_BPC(op_array) ((op_array)->backpatch_count--)
45 #define HANDLE_INTERACTIVE() if (EG(interactive)) { execute_new_code(CLS_C); }
46 #else
47 #define INC_BPC(op_array)
48 #define DEC_BPC(op_array)
49 #define HANDLE_INTERACTIVE()
50 #endif
51
52 typedef struct _zend_op_array zend_op_array;
53
54 typedef struct {
55 int op_type;
56 union {
57 zval constant;
58
59 int var;
60 int opline_num;
61 zend_op_array *op_array;
62 struct {
63 int var; /* dummy */
64 int type;
65 } EA;
66 } u;
67 } znode;
68
69
70 typedef struct _zend_op {
71 int opcode;
72 znode result;
73 znode op1;
74 znode op2;
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75 ulong extended_value;
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76 char *filename;
77 uint lineno;
78 } zend_op;
79
80
81 typedef struct {
82 int cont;
83 int brk;
84 int parent;
85 } zend_brk_cont_element;
86
87
88 struct _zend_op_array {
89 int type; /* MUST be the first element of this struct! */
90
91 unsigned char *arg_types; /* MUST be the second element of this struct! */
92
93 int *refcount;
94
95 zend_op *opcodes;
96 int last, size;
97
98 int T;
99
100 char *function_name;
101
102 zend_brk_cont_element *brk_cont_array;
103 int last_brk_cont;
104 int current_brk_cont;
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105 unsigned char initialized_globals;
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106
107 /* static variables support */
108 HashTable *static_variables;
109
110 #if SUPPORT_INTERACTIVE
111 int start_op_number, end_op_number;
112 int last_executed_op_number;
113 int backpatch_count;
114 #endif
115
116 void *reserved[4];
117 };
118
119
120 typedef struct {
121 int type; /* MUST be the first element of this struct! */
122
123 unsigned char *arg_types; /* MUST be the second element of this struct */
124
125 void (*handler)(INTERNAL_FUNCTION_PARAMETERS);
126 char *function_name;
127 } zend_internal_function;
128
129
130 typedef union {
131 int type; /* MUST be the first element of this struct! */
132 struct {
133 int type; /* never used */
134 unsigned char *arg_types;
135 } common;
136
137 zend_op_array op_array;
138 zend_internal_function internal_function;
139 } zend_function;
140
141
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142 typedef struct _zend_function_state {
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143 HashTable *function_symbol_table;
144 zend_function *function;
145 void *reserved[4];
146 } zend_function_state;
147
148
149 typedef struct {
150 znode cond;
151 int default_case;
152 int control_var;
153 } zend_switch_entry;
154
155
156 typedef struct {
157 znode var;
158 zend_llist dimensions;
159 znode value;
160 } list_llist_element;
161
162
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163 typedef struct _zend_file_handle {
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164 int type;
165 char *filename;
166 union {
167 int fd;
168 FILE *fp;
169 #ifdef __cplusplus
170 istream *is;
171 #endif
172 } handle;
173 } zend_file_handle;
174
175
176 #include "zend_globals.h"
177
178 #define IS_CONST (1<<0)
179 #define IS_TMP_VAR (1<<1)
180 #define IS_VAR (1<<2)
181 #define IS_UNUSED (1<<3) /* Unused variable */
182
183
184 #define EXT_TYPE_UNUSED (1<<0)
185
186 void init_compiler(CLS_D ELS_DC);
187 void shutdown_compiler(CLS_D);
188
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189 BEGIN_EXTERN_C()
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190 extern ZEND_API zend_op_array *(*zend_compile_files)(int mark_as_ref CLS_DC, int file_count, ...);
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191
192 int lex_scan(zval *zendlval CLS_DC);
193 void startup_scanner(CLS_D);
194 void shutdown_scanner(CLS_D);
195
196 ZEND_API void zend_set_compiled_filename(char *new_compiled_filename);
197 ZEND_API void zend_restore_compiled_filename(char *original_compiled_filename);
198 ZEND_API char *zend_get_compiled_filename();
199
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200 #ifdef ZTS
201 const char *zend_get_zendtext(CLS_D);
202 int zend_get_zendleng(CLS_D);
203 #endif
204
205 END_EXTERN_C()
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206
207 /* parser-driven code generators */
208 void do_binary_op(int op, znode *result, znode *op1, znode *op2 CLS_DC);
209 void do_unary_op(int op, znode *result, znode *op1 CLS_DC);
210 void do_binary_assign_op(int op, znode *result, znode *op1, znode *op2 CLS_DC);
211 void do_assign(znode *result, znode *variable, znode *value CLS_DC);
212 void do_assign_ref(znode *result, znode *lvar, znode *rvar CLS_DC);
213 void fetch_simple_variable(znode *result, znode *varname, int bp CLS_DC);
214 void do_indirect_references(znode *result, znode *num_references, znode *variable CLS_DC);
215 void do_fetch_global_or_static_variable(znode *varname, znode *static_assignment, int fetch_type CLS_DC);
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216 void do_fetch_globals(znode *varname CLS_DC);
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217
218 void fetch_array_begin(znode *result, znode *varname, znode *first_dim CLS_DC);
219 void fetch_array_dim(znode *result, znode *parent, znode *dim CLS_DC);
220 void do_print(znode *result, znode *arg CLS_DC);
221 void do_echo(znode *arg CLS_DC);
222 ZEND_API void *get_unary_op(int opcode);
223 ZEND_API void *get_binary_op(int opcode);
224
225 void do_while_cond(znode *expr, znode *close_bracket_token CLS_DC);
226 void do_while_end(znode *while_token, znode *close_bracket_token CLS_DC);
227 void do_do_while_begin(CLS_D);
228 void do_do_while_end(znode *do_token, znode *expr CLS_DC);
229
230
231 void do_if_cond(znode *cond, znode *closing_bracket_token CLS_DC);
232 void do_if_after_statement(znode *closing_bracket_token, unsigned char initialize CLS_DC);
233 void do_if_end(CLS_D);
234
235 void do_for_cond(znode *expr, znode *second_semicolon_token CLS_DC);
236 void do_for_before_statement(znode *cond_start, znode *second_semicolon_token CLS_DC);
237 void do_for_end(znode *second_semicolon_token CLS_DC);
238
239 void do_pre_incdec(znode *result, znode *op1, int op CLS_DC);
240 void do_post_incdec(znode *result, znode *op1, int op CLS_DC);
241
242 void do_begin_variable_parse(CLS_D);
243 void do_end_variable_parse(int type CLS_DC);
244
245 void do_free(znode *op1 CLS_DC);
246
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247 void do_init_string(znode *result CLS_DC);
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248 void do_add_char(znode *result, znode *op1, znode *op2 CLS_DC);
249 void do_add_string(znode *result, znode *op1, znode *op2 CLS_DC);
250 void do_add_variable(znode *result, znode *op1, znode *op2 CLS_DC);
251
252 void do_begin_function_declaration(znode *function_token, znode *function_name, int is_method CLS_DC);
253 void do_end_function_declaration(znode *function_token CLS_DC);
254 void do_receive_arg(int op, znode *var, znode *offset, znode *initialization, unsigned char pass_type CLS_DC);
255 void do_begin_function_call(znode *function_name CLS_DC);
256 void do_begin_dynamic_function_call(znode *function_name CLS_DC);
257 void do_begin_class_member_function_call(znode *class_name, znode *function_name CLS_DC);
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258 void do_end_function_call(znode *function_name, znode *result, znode *argument_list, int is_method CLS_DC);
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259 void do_return(znode *expr CLS_DC);
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260 ZEND_API void do_bind_function_or_class(zend_op *opline, HashTable *function_table, HashTable *class_table);
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261 void do_early_binding(CLS_D);
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262
263 void do_pass_param(znode *param, int op, int offset CLS_DC);
264
265
266 void do_boolean_or_begin(znode *expr1, znode *op_token CLS_DC);
267 void do_boolean_or_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC);
268 void do_boolean_and_begin(znode *expr1, znode *op_token CLS_DC);
269 void do_boolean_and_end(znode *result, znode *expr1, znode *expr2, znode *op_token CLS_DC);
270
271 void do_brk_cont(int op, znode *expr CLS_DC);
272
273 void do_switch_cond(znode *cond CLS_DC);
274 void do_switch_end(znode *case_list CLS_DC);
275 void do_case_before_statement(znode *case_list, znode *case_token, znode *case_expr CLS_DC);
276 void do_case_after_statement(znode *result, znode *case_token CLS_DC);
277 void do_default_before_statement(znode *case_list, znode *default_token CLS_DC);
278
279 void do_begin_class_declaration(znode *class_name, znode *parent_class_name CLS_DC);
280 void do_end_class_declaration(CLS_D);
281 void do_declare_property(znode *var_name, znode *value CLS_DC);
282
283 void do_fetch_property(znode *result, znode *object, znode *property CLS_DC);
284
285
286 void do_push_object(znode *object CLS_DC);
287 void do_pop_object(znode *object CLS_DC);
288
289
290 void do_begin_new_object(znode *result, znode *variable, znode *new_token, znode *class_name CLS_DC);
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291 void do_end_new_object(znode *class_name, znode *new_token, znode *argument_list CLS_DC);
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292
293 void do_fetch_constant(znode *result, znode *constant_name, int mode CLS_DC);
294
295 void do_shell_exec(znode *result, znode *cmd CLS_DC);
296
297 void do_init_array(znode *result, znode *expr, znode *offset CLS_DC);
298 void do_add_array_element(znode *result, znode *expr, znode *offset CLS_DC);
299 void do_add_static_array_element(znode *result, znode *expr, znode *offset);
300 void do_list_init();
301 void do_list_end(znode *result, znode *expr CLS_DC);
302 void do_add_list_element(znode *element CLS_DC);
303 void do_new_list_begin(CLS_D);
304 void do_new_list_end(CLS_D);
305
306 void do_cast(znode *result, znode *expr, int type CLS_DC);
307 void do_include_or_eval(int type, znode *result, znode *op1 CLS_DC);
308
309 void do_unset(znode *variable CLS_DC);
310 void do_isset_or_isempty(int type, znode *result, znode *variable CLS_DC);
311
312 void do_foreach_begin(znode *foreach_token, znode *array, znode *open_brackets_token, znode *as_token CLS_DC);
313 void do_foreach_cont(znode *value, znode *key, znode *as_token CLS_DC);
314 void do_foreach_end(znode *foreach_token, znode *open_brackets_token CLS_DC);
315
316 void do_end_heredoc(CLS_D);
317
318 void do_exit(znode *result, znode *message CLS_DC);
319
320 void do_begin_silence(znode *strudel_token CLS_DC);
321 void do_end_silence(znode *strudel_token CLS_DC);
322
323 void do_begin_qm_op(znode *cond, znode *qm_token CLS_DC);
324 void do_qm_true(znode *true_value, znode *qm_token, znode *colon_token CLS_DC);
325 void do_qm_false(znode *result, znode *false_value, znode *qm_token, znode *colon_token CLS_DC);
326
327 void do_extended_info(CLS_D);
328 void do_extended_fcall_begin(CLS_D);
329 void do_extended_fcall_end(CLS_D);
330
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331 #define INITIAL_OP_ARRAY_SIZE 64
332
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333
334 /* helper functions in zend-scanner.l */
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335 BEGIN_EXTERN_C()
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336 ZEND_API int require_file(zend_file_handle *file_handle CLS_DC);
337 ZEND_API int require_filename(char *filename CLS_DC);
338 ZEND_API zend_op_array *compile_files(int mark_as_ref CLS_DC, int file_count, ...);
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339 ZEND_API zend_op_array *v_compile_files(int mark_as_ref CLS_DC, int file_count, va_list files);
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340 ZEND_API zend_op_array *compile_string(zval *source_string CLS_DC);
341 ZEND_API zend_op_array *compile_filename(zval *filename CLS_DC);
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342 ZEND_API inline int open_file_for_scanning(zend_file_handle *file_handle CLS_DC);
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343 ZEND_API void init_op_array(zend_op_array *op_array, int initial_ops_size);
344 ZEND_API void destroy_op_array(zend_op_array *op_array);
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345 ZEND_API void zend_close_file_handle(zend_file_handle *file_handle);
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346 END_EXTERN_C()
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347
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348 ZEND_API void destroy_zend_function(zend_function *function);
349 ZEND_API void destroy_zend_class(zend_class_entry *ce);
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350 void zend_class_add_ref(zend_class_entry *ce);
351
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352 zend_op *get_next_op(zend_op_array *op_array CLS_DC);
353 int get_next_op_number(zend_op_array *op_array);
354 int print_class(zend_class_entry *class_entry);
355 void print_op_array(zend_op_array *op_array, int optimizations);
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356 BEGIN_EXTERN_C()
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357 int pass_two(zend_op_array *op_array);
358 void pass_include_eval(zend_op_array *op_array);
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359 END_EXTERN_C()
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360 zend_brk_cont_element *get_next_brk_cont_element(zend_op_array *op_array);
361
362
363 int zendlex(znode *zendlval CLS_DC);
364
365
366 #define ZEND_NOP 0
367
368 #define ZEND_ADD 1
369 #define ZEND_SUB 2
370 #define ZEND_MUL 3
371 #define ZEND_DIV 4
372 #define ZEND_MOD 5
373 #define ZEND_SL 6
374 #define ZEND_SR 7
375 #define ZEND_CONCAT 8
376 #define ZEND_BW_OR 9
377 #define ZEND_BW_AND 10
378 #define ZEND_BW_XOR 11
379 #define ZEND_BW_NOT 12
380 #define ZEND_BOOL_NOT 13
381 #define ZEND_BOOL_XOR 14
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382 #define ZEND_IS_EQUAL 15
383 #define ZEND_IS_NOT_EQUAL 16
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384 #define ZEND_IS_SMALLER 17
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385 #define ZEND_IS_SMALLER_OR_EQUAL 18
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386 #define ZEND_CAST 19
387 #define ZEND_QM_ASSIGN 20
388
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389 #define ZEND_ASSIGN_ADD 21
390 #define ZEND_ASSIGN_SUB 22
391 #define ZEND_ASSIGN_MUL 23
392 #define ZEND_ASSIGN_DIV 24
393 #define ZEND_ASSIGN_MOD 25
394 #define ZEND_ASSIGN_SL 26
395 #define ZEND_ASSIGN_SR 27
396 #define ZEND_ASSIGN_CONCAT 28
397 #define ZEND_ASSIGN_BW_OR 29
398 #define ZEND_ASSIGN_BW_AND 30
399 #define ZEND_ASSIGN_BW_XOR 31
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400
401 #define ZEND_PRE_INC 32
402 #define ZEND_PRE_DEC 33
403 #define ZEND_POST_INC 34
404 #define ZEND_POST_DEC 35
405
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406 #define ZEND_ASSIGN 36
407 #define ZEND_ASSIGN_REF 37
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408
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409 #define ZEND_ECHO 38
410 #define ZEND_PRINT 39
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411
412 #define ZEND_JMP 40
413 #define ZEND_JMPZ 41
414 #define ZEND_JMPNZ 42
415 #define ZEND_JMPZNZ 43
416 #define ZEND_JMPZ_EX 44
417 #define ZEND_JMPNZ_EX 45
418 #define ZEND_CASE 46
419 #define ZEND_BRK 47
420 #define ZEND_CONT 48
421 #define ZEND_BOOL 49
422
423 #define ZEND_INIT_STRING 50
424 #define ZEND_ADD_CHAR 51
425 #define ZEND_ADD_STRING 52
426 #define ZEND_ADD_VAR 53
427
428 #define ZEND_BEGIN_SILENCE 54
429 #define ZEND_END_SILENCE 55
430
431 #define ZEND_INIT_FCALL 56
432 #define ZEND_INIT_FCALL_BY_NAME 57
433 #define ZEND_DO_FCALL 58
434 #define ZEND_RETURN 59
435
436 #define ZEND_RECV 60
437 #define ZEND_RECV_INIT 61
438
439 #define ZEND_SEND_VAL 62
440 #define ZEND_SEND_VAR 63
441 #define ZEND_SEND_REF 64
442
443 #define ZEND_NEW 65
444 #define ZEND_JMP_NO_CTOR 66
445 #define ZEND_FREE 67
446
447 #define ZEND_INIT_ARRAY 68
448 #define ZEND_ADD_ARRAY_ELEMENT 69
449
450 #define ZEND_INCLUDE_OR_EVAL 70
451
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452 #define ZEND_UNSET_VAR 71
453 #define ZEND_UNSET_DIM_OBJ 72
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454 #define ZEND_ISSET_ISEMPTY 73
455
456 #define ZEND_FE_RESET 74
457 #define ZEND_FE_FETCH 75
458
459 #define ZEND_EXIT 76
460
461
462 /* the following 12 opcodes are 4 groups of 3 opcodes each, and must
463 * remain in that order!
464 */
465 #define ZEND_FETCH_R 77
466 #define ZEND_FETCH_DIM_R 78
467 #define ZEND_FETCH_OBJ_R 79
468 #define ZEND_FETCH_W 80
469 #define ZEND_FETCH_DIM_W 81
470 #define ZEND_FETCH_OBJ_W 82
471 #define ZEND_FETCH_RW 83
472 #define ZEND_FETCH_DIM_RW 84
473 #define ZEND_FETCH_OBJ_RW 85
474 #define ZEND_FETCH_IS 86
475 #define ZEND_FETCH_DIM_IS 87
476 #define ZEND_FETCH_OBJ_IS 88
477
478 #define ZEND_FETCH_DIM_TMP_VAR 89
479 #define ZEND_FETCH_CONSTANT 90
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480
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481 #define ZEND_DECLARE_FUNCTION_OR_CLASS 91
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482
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483 #define ZEND_INIT_GLOBALS 92
484
485 #define ZEND_EXT_STMT 93
486 #define ZEND_EXT_FCALL_BEGIN 94
487 #define ZEND_EXT_FCALL_END 95
488 #define ZEND_EXT_NOP 96
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489
490 /* end of block */
491
492
493
494
495 /* global/local fetches */
496 #define ZEND_FETCH_GLOBAL 0
497 #define ZEND_FETCH_LOCAL 1
498 #define ZEND_FETCH_STATIC 2
499
500 /* var status for backpatching */
501 #define BP_VAR_R 0
502 #define BP_VAR_W 1
503 #define BP_VAR_RW 2
504 #define BP_VAR_IS 3
505 #define BP_VAR_NA 4 /* if not applicable */
506
507
508 #define ZEND_INTERNAL_FUNCTION 1
509 #define ZEND_USER_FUNCTION 2
510 #define ZEND_OVERLOADED_FUNCTION 3
2493f68 @zsuraski * Fix debugger+interactive mode bug
zsuraski authored
511 #define ZEND_EVAL_CODE 4
573b460 @andigutmans Zend Library
andigutmans authored
512
513 #define ZEND_INTERNAL_CLASS 1
514 #define ZEND_USER_CLASS 2
515
516 #define ZEND_EVAL (1<<0)
517 #define ZEND_INCLUDE (1<<1)
518
519 #define ZEND_ISSET (1<<0)
520 #define ZEND_ISEMPTY (1<<1)
521
522 #define ZEND_CT (1<<0)
523 #define ZEND_RT (1<<1)
524
525
526 #define ZEND_HANDLE_FILENAME 0
527 #define ZEND_HANDLE_FD 1
528 #define ZEND_HANDLE_FP 2
529 #define ZEND_HANDLE_ISTREAM 3
530
b0bfa45 @zsuraski * Fix all hash checks that checked Bucket.arKey for NULL, when it was ch...
zsuraski authored
531 #define ZEND_DECLARE_CLASS 1
532 #define ZEND_DECLARE_FUNCTION 2
533
573b460 @andigutmans Zend Library
andigutmans authored
534 #endif /* _COMPILE_H */
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