1 /* 2 +----------------------------------------------------------------------+ 3 | Zend Engine | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) | 6 +----------------------------------------------------------------------+ 7 | This source file is subject to version 2.00 of the Zend license, | 8 | that is bundled with this package in the file LICENSE, and is | 9 | available through the world-wide-web at the following url: | 10 | http://www.zend.com/license/2_00.txt. | 11 | If you did not receive a copy of the Zend license and are unable to | 12 | obtain it through the world-wide-web, please send a note to | 13 | license@zend.com so we can mail you a copy immediately. | 14 +----------------------------------------------------------------------+ 15 | Authors: Andi Gutmans <andi@zend.com> | 16 | Zeev Suraski <zeev@zend.com> | 17 +----------------------------------------------------------------------+ 18 */ 19 20 /* $Id$ */ 21 22 #ifndef ZEND_COMPILE_H 23 #define ZEND_COMPILE_H 24 25 #include "zend.h" 26 27 #ifdef HAVE_STDARG_H 28 # include <stdarg.h> 29 #endif 30 31 #include "zend_llist.h" 32 33 #define DEBUG_ZEND 0 34 35 #define FREE_PNODE(znode) zval_dtor(&znode->u.constant); 36 37 #define SET_UNUSED(op) op ## _type = IS_UNUSED 38 39 #define INC_BPC(op_array) if (op_array->fn_flags & ZEND_ACC_INTERACTIVE) { (CG(context).backpatch_count++); } 40 #define DEC_BPC(op_array) if (op_array->fn_flags & ZEND_ACC_INTERACTIVE) { (CG(context).backpatch_count--); } 41 #define HANDLE_INTERACTIVE() if (CG(active_op_array)->fn_flags & ZEND_ACC_INTERACTIVE) { execute_new_code(TSRMLS_C); } 42 #define DO_TICKS() if (Z_LVAL(CG(declarables).ticks)) { zend_do_ticks(TSRMLS_C); } 43 44 #define RESET_DOC_COMMENT() \ 45 { \ 46 if (CG(doc_comment)) { \ 47 efree(CG(doc_comment)); \ 48 CG(doc_comment) = NULL; \ 49 } \ 50 CG(doc_comment_len) = 0; \ 51 } 52 53 typedef struct _zend_op_array zend_op_array; 54 typedef struct _zend_op zend_op; 55 56 typedef struct _zend_compiler_context { 57 zend_uint opcodes_size; 58 int vars_size; 59 int literals_size; 60 int current_brk_cont; 61 int backpatch_count; 62 HashTable *labels; 63 } zend_compiler_context; 64 65 typedef struct _zend_literal { 66 zval constant; 67 zend_ulong hash_value; 68 zend_uint cache_slot; 69 } zend_literal; 70 71 #define Z_HASH_P(zv) \ 72 (((zend_literal*)(zv))->hash_value) 73 74 typedef union _znode_op { 75 zend_uint constant; 76 zend_uint var; 77 zend_uint num; 78 zend_ulong hash; 79 zend_uint opline_num; /* Needs to be signed */ 80 zend_op *jmp_addr; 81 zval *zv; 82 zend_literal *literal; 83 void *ptr; /* Used for passing pointers from the compile to execution phase, currently used for traits */ 84 } znode_op; 85 86 typedef struct _znode { /* used only during compilation */ 87 int op_type; 88 union { 89 znode_op op; 90 zval constant; /* replaced by literal/zv */ 91 zend_op_array *op_array; 92 } u; 93 zend_uint EA; /* extended attributes */ 94 } znode; 95 96 typedef struct _zend_execute_data zend_execute_data; 97 98 #define ZEND_OPCODE_HANDLER_ARGS zend_execute_data *execute_data TSRMLS_DC 99 #define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU execute_data TSRMLS_CC 100 101 typedef int (*user_opcode_handler_t) (ZEND_OPCODE_HANDLER_ARGS); 102 typedef int (ZEND_FASTCALL *opcode_handler_t) (ZEND_OPCODE_HANDLER_ARGS); 103 104 extern ZEND_API opcode_handler_t *zend_opcode_handlers; 105 106 struct _zend_op { 107 opcode_handler_t handler; 108 znode_op op1; 109 znode_op op2; 110 znode_op result; 111 ulong extended_value; 112 uint lineno; 113 zend_uchar opcode; 114 zend_uchar op1_type; 115 zend_uchar op2_type; 116 zend_uchar result_type; 117 }; 118 119 120 typedef struct _zend_brk_cont_element { 121 int start; 122 int cont; 123 int brk; 124 int parent; 125 } zend_brk_cont_element; 126 127 typedef struct _zend_label { 128 int brk_cont; 129 zend_uint opline_num; 130 } zend_label; 131 132 typedef struct _zend_try_catch_element { 133 zend_uint try_op; 134 zend_uint catch_op; /* ketchup! */ 135 } zend_try_catch_element; 136 137 #if SIZEOF_LONG == 8 138 #define THIS_HASHVAL 210728972157UL 139 #else 140 #define THIS_HASHVAL 275574653UL 141 #endif 142 143 /* method flags (types) */ 144 #define ZEND_ACC_STATIC 0x01 145 #define ZEND_ACC_ABSTRACT 0x02 146 #define ZEND_ACC_FINAL 0x04 147 #define ZEND_ACC_IMPLEMENTED_ABSTRACT 0x08 148 149 /* class flags (types) */ 150 /* ZEND_ACC_IMPLICIT_ABSTRACT_CLASS is used for abstract classes (since it is set by any abstract method even interfaces MAY have it set, too). */ 151 /* ZEND_ACC_EXPLICIT_ABSTRACT_CLASS denotes that a class was explicitly defined as abstract by using the keyword. */ 152 #define ZEND_ACC_IMPLICIT_ABSTRACT_CLASS 0x10 153 #define ZEND_ACC_EXPLICIT_ABSTRACT_CLASS 0x20 154 #define ZEND_ACC_FINAL_CLASS 0x40 155 #define ZEND_ACC_INTERFACE 0x80 156 #define ZEND_ACC_TRAIT 0x120 157 158 /* op_array flags */ 159 #define ZEND_ACC_INTERACTIVE 0x10 160 161 /* method flags (visibility) */ 162 /* The order of those must be kept - public < protected < private */ 163 #define ZEND_ACC_PUBLIC 0x100 164 #define ZEND_ACC_PROTECTED 0x200 165 #define ZEND_ACC_PRIVATE 0x400 166 #define ZEND_ACC_PPP_MASK (ZEND_ACC_PUBLIC | ZEND_ACC_PROTECTED | ZEND_ACC_PRIVATE) 167 168 #define ZEND_ACC_CHANGED 0x800 169 #define ZEND_ACC_IMPLICIT_PUBLIC 0x1000 170 171 /* method flags (special method detection) */ 172 #define ZEND_ACC_CTOR 0x2000 173 #define ZEND_ACC_DTOR 0x4000 174 #define ZEND_ACC_CLONE 0x8000 175 176 /* method flag (bc only), any method that has this flag can be used statically and non statically. */ 177 #define ZEND_ACC_ALLOW_STATIC 0x10000 178 179 /* shadow of parent's private method/property */ 180 #define ZEND_ACC_SHADOW 0x20000 181 182 /* deprecation flag */ 183 #define ZEND_ACC_DEPRECATED 0x40000 184 185 /* class implement interface(s) flag */ 186 #define ZEND_ACC_IMPLEMENT_INTERFACES 0x80000 187 #define ZEND_ACC_IMPLEMENT_TRAITS 0x400000 188 189 /* class constants updated */ 190 #define ZEND_ACC_CONSTANTS_UPDATED 0x100000 191 192 /* user class has methods with static variables */ 193 #define ZEND_HAS_STATIC_IN_METHODS 0x800000 194 195 196 #define ZEND_ACC_CLOSURE 0x100000 197 198 /* function flag for internal user call handlers __call, __callstatic */ 199 #define ZEND_ACC_CALL_VIA_HANDLER 0x200000 200 201 /* disable inline caching */ 202 #define ZEND_ACC_NEVER_CACHE 0x400000 203 204 #define ZEND_ACC_PASS_REST_BY_REFERENCE 0x1000000 205 #define ZEND_ACC_PASS_REST_PREFER_REF 0x2000000 206 207 #define ZEND_ACC_RETURN_REFERENCE 0x4000000 208 #define ZEND_ACC_DONE_PASS_TWO 0x8000000 209 210 char *zend_visibility_string(zend_uint fn_flags); 211 212 213 typedef struct _zend_property_info { 214 zend_uint flags; 215 const char *name; 216 int name_length; 217 ulong h; 218 int offset; 219 const char *doc_comment; 220 int doc_comment_len; 221 zend_class_entry *ce; 222 } zend_property_info; 223 224 225 typedef struct _zend_arg_info { 226 const char *name; 227 zend_uint name_len; 228 const char *class_name; 229 zend_uint class_name_len; 230 zend_uchar type_hint; 231 zend_bool allow_null; 232 zend_bool pass_by_reference; 233 } zend_arg_info; 234 235 /* the following structure repeats the layout of zend_arg_info, 236 * but its fields have different meaning. It's used as the first element of 237 * arg_info array to define properties of internal functions. 238 */ 239 typedef struct _zend_internal_function_info { 240 const char *_name; 241 zend_uint _name_len; 242 const char *_class_name; 243 zend_uint required_num_args; 244 zend_uchar _type_hint; 245 zend_bool return_reference; 246 zend_bool pass_rest_by_reference; 247 } zend_internal_function_info; 248 249 typedef struct _zend_compiled_variable { 250 const char *name; 251 int name_len; 252 ulong hash_value; 253 } zend_compiled_variable; 254 255 struct _zend_op_array { 256 /* Common elements */ 257 zend_uchar type; 258 const char *function_name; 259 zend_class_entry *scope; 260 zend_uint fn_flags; 261 union _zend_function *prototype; 262 zend_uint num_args; 263 zend_uint required_num_args; 264 zend_arg_info *arg_info; 265 /* END of common elements */ 266 267 zend_uint *refcount; 268 269 zend_op *opcodes; 270 zend_uint last; 271 272 zend_compiled_variable *vars; 273 int last_var; 274 275 zend_uint T; 276 277 zend_brk_cont_element *brk_cont_array; 278 int last_brk_cont; 279 280 zend_try_catch_element *try_catch_array; 281 int last_try_catch; 282 283 /* static variables support */ 284 HashTable *static_variables; 285 286 zend_uint this_var; 287 288 const char *filename; 289 zend_uint line_start; 290 zend_uint line_end; 291 const char *doc_comment; 292 zend_uint doc_comment_len; 293 zend_uint early_binding; /* the linked list of delayed declarations */ 294 295 zend_literal *literals; 296 int last_literal; 297 298 void **run_time_cache; 299 int last_cache_slot; 300 301 void *reserved[ZEND_MAX_RESERVED_RESOURCES]; 302 }; 303 304 305 #define ZEND_RETURN_VALUE 0 306 #define ZEND_RETURN_REFERENCE 1 307 308 typedef struct _zend_internal_function { 309 /* Common elements */ 310 zend_uchar type; 311 const char * function_name; 312 zend_class_entry *scope; 313 zend_uint fn_flags; 314 union _zend_function *prototype; 315 zend_uint num_args; 316 zend_uint required_num_args; 317 zend_arg_info *arg_info; 318 /* END of common elements */ 319 320 void (*handler)(INTERNAL_FUNCTION_PARAMETERS); 321 struct _zend_module_entry *module; 322 } zend_internal_function; 323 324 #define ZEND_FN_SCOPE_NAME(function) ((function) && (function)->common.scope ? (function)->common.scope->name : "") 325 326 typedef union _zend_function { 327 zend_uchar type; /* MUST be the first element of this struct! */ 328 329 struct { 330 zend_uchar type; /* never used */ 331 const char *function_name; 332 zend_class_entry *scope; 333 zend_uint fn_flags; 334 union _zend_function *prototype; 335 zend_uint num_args; 336 zend_uint required_num_args; 337 zend_arg_info *arg_info; 338 } common; 339 340 zend_op_array op_array; 341 zend_internal_function internal_function; 342 } zend_function; 343 344 345 typedef struct _zend_function_state { 346 zend_function *function; 347 void **arguments; 348 } zend_function_state; 349 350 351 typedef struct _zend_switch_entry { 352 znode cond; 353 int default_case; 354 int control_var; 355 } zend_switch_entry; 356 357 358 typedef struct _list_llist_element { 359 znode var; 360 zend_llist dimensions; 361 znode value; 362 } list_llist_element; 363 364 union _temp_variable; 365 366 struct _zend_execute_data { 367 struct _zend_op *opline; 368 zend_function_state function_state; 369 zend_function *fbc; /* Function Being Called */ 370 zend_class_entry *called_scope; 371 zend_op_array *op_array; 372 zval *object; 373 union _temp_variable *Ts; 374 zval ***CVs; 375 HashTable *symbol_table; 376 struct _zend_execute_data *prev_execute_data; 377 zval *old_error_reporting; 378 zend_bool nested; 379 zval **original_return_value; 380 zend_class_entry *current_scope; 381 zend_class_entry *current_called_scope; 382 zval *current_this; 383 zval *current_object; 384 }; 385 386 #define EX(element) execute_data.element 387 388 389 #define IS_CONST (1<<0) 390 #define IS_TMP_VAR (1<<1) 391 #define IS_VAR (1<<2) 392 #define IS_UNUSED (1<<3) /* Unused variable */ 393 #define IS_CV (1<<4) /* Compiled variable */ 394 395 #define EXT_TYPE_UNUSED (1<<5) 396 397 #include "zend_globals.h" 398 399 BEGIN_EXTERN_C() 400 401 void init_compiler(TSRMLS_D); 402 void shutdown_compiler(TSRMLS_D); 403 void zend_init_compiler_data_structures(TSRMLS_D); 404 void zend_init_compiler_context(TSRMLS_D); 405 406 extern ZEND_API zend_op_array *(*zend_compile_file)(zend_file_handle *file_handle, int type TSRMLS_DC); 407 extern ZEND_API zend_op_array *(*zend_compile_string)(zval *source_string, char *filename TSRMLS_DC); 408 409 ZEND_API int lex_scan(zval *zendlval TSRMLS_DC); 410 void startup_scanner(TSRMLS_D); 411 void shutdown_scanner(TSRMLS_D); 412 413 ZEND_API char *zend_set_compiled_filename(const char *new_compiled_filename TSRMLS_DC); 414 ZEND_API void zend_restore_compiled_filename(char *original_compiled_filename TSRMLS_DC); 415 ZEND_API char *zend_get_compiled_filename(TSRMLS_D); 416 ZEND_API int zend_get_compiled_lineno(TSRMLS_D); 417 ZEND_API size_t zend_get_scanned_file_offset(TSRMLS_D); 418 419 void zend_resolve_non_class_name(znode *element_name, zend_bool check_namespace TSRMLS_DC); 420 void zend_resolve_class_name(znode *class_name, ulong fetch_type, int check_ns_name TSRMLS_DC); 421 ZEND_API const char* zend_get_compiled_variable_name(const zend_op_array *op_array, zend_uint var, int* name_len); 422 423 #ifdef ZTS 424 const char *zend_get_zendtext(TSRMLS_D); 425 int zend_get_zendleng(TSRMLS_D); 426 #endif 427 428 429 /* parser-driven code generators */ 430 void zend_do_binary_op(zend_uchar op, znode *result, const znode *op1, const znode *op2 TSRMLS_DC); 431 void zend_do_unary_op(zend_uchar op, znode *result, const znode *op1 TSRMLS_DC); 432 void zend_do_binary_assign_op(zend_uchar op, znode *result, const znode *op1, const znode *op2 TSRMLS_DC); 433 void zend_do_assign(znode *result, znode *variable, znode *value TSRMLS_DC); 434 void zend_do_assign_ref(znode *result, const znode *lvar, const znode *rvar TSRMLS_DC); 435 void fetch_simple_variable(znode *result, znode *varname, int bp TSRMLS_DC); 436 void fetch_simple_variable_ex(znode *result, znode *varname, int bp, zend_uchar op TSRMLS_DC); 437 void zend_do_indirect_references(znode *result, const znode *num_references, znode *variable TSRMLS_DC); 438 void zend_do_fetch_static_variable(znode *varname, const znode *static_assignment, int fetch_type TSRMLS_DC); 439 void zend_do_fetch_global_variable(znode *varname, const znode *static_assignment, int fetch_type TSRMLS_DC); 440 441 void fetch_array_begin(znode *result, znode *varname, znode *first_dim TSRMLS_DC); 442 void fetch_array_dim(znode *result, const znode *parent, const znode *dim TSRMLS_DC); 443 void fetch_string_offset(znode *result, const znode *parent, const znode *offset TSRMLS_DC); 444 void zend_do_fetch_static_member(znode *result, znode *class_znode TSRMLS_DC); 445 void zend_do_print(znode *result, const znode *arg TSRMLS_DC); 446 void zend_do_echo(const znode *arg TSRMLS_DC); 447 typedef int (*unary_op_type)(zval *, zval * TSRMLS_DC); 448 typedef int (*binary_op_type)(zval *, zval *, zval * TSRMLS_DC); 449 ZEND_API unary_op_type get_unary_op(int opcode); 450 ZEND_API binary_op_type get_binary_op(int opcode); 451 452 void zend_do_while_cond(const znode *expr, znode *close_bracket_token TSRMLS_DC); 453 void zend_do_while_end(const znode *while_token, const znode *close_bracket_token TSRMLS_DC); 454 void zend_do_do_while_begin(TSRMLS_D); 455 void zend_do_do_while_end(const znode *do_token, const znode *expr_open_bracket, const znode *expr TSRMLS_DC); 456 457 458 void zend_do_if_cond(const znode *cond, znode *closing_bracket_token TSRMLS_DC); 459 void zend_do_if_after_statement(const znode *closing_bracket_token, unsigned char initialize TSRMLS_DC); 460 void zend_do_if_end(TSRMLS_D); 461 462 void zend_do_for_cond(const znode *expr, znode *second_semicolon_token TSRMLS_DC); 463 void zend_do_for_before_statement(const znode *cond_start, const znode *second_semicolon_token TSRMLS_DC); 464 void zend_do_for_end(const znode *second_semicolon_token TSRMLS_DC); 465 466 void zend_do_pre_incdec(znode *result, const znode *op1, zend_uchar op TSRMLS_DC); 467 void zend_do_post_incdec(znode *result, const znode *op1, zend_uchar op TSRMLS_DC); 468 469 void zend_do_begin_variable_parse(TSRMLS_D); 470 void zend_do_end_variable_parse(znode *variable, int type, int arg_offset TSRMLS_DC); 471 472 void zend_check_writable_variable(const znode *variable); 473 474 void zend_do_free(znode *op1 TSRMLS_DC); 475 476 void zend_do_add_string(znode *result, const znode *op1, znode *op2 TSRMLS_DC); 477 void zend_do_add_variable(znode *result, const znode *op1, const znode *op2 TSRMLS_DC); 478 479 int zend_do_verify_access_types(const znode *current_access_type, const znode *new_modifier); 480 void zend_do_begin_function_declaration(znode *function_token, znode *function_name, int is_method, int return_reference, znode *fn_flags_znode TSRMLS_DC); 481 void zend_do_end_function_declaration(const znode *function_token TSRMLS_DC); 482 void zend_do_receive_arg(zend_uchar op, znode *varname, const znode *offset, const znode *initialization, znode *class_type, zend_bool pass_by_reference TSRMLS_DC); 483 int zend_do_begin_function_call(znode *function_name, zend_bool check_namespace TSRMLS_DC); 484 void zend_do_begin_method_call(znode *left_bracket TSRMLS_DC); 485 void zend_do_clone(znode *result, const znode *expr TSRMLS_DC); 486 void zend_do_begin_dynamic_function_call(znode *function_name, int prefix_len TSRMLS_DC); 487 void zend_do_fetch_class(znode *result, znode *class_name TSRMLS_DC); 488 void zend_do_build_full_name(znode *result, znode *prefix, znode *name, int is_class_member TSRMLS_DC); 489 int zend_do_begin_class_member_function_call(znode *class_name, znode *method_name TSRMLS_DC); 490 void zend_do_end_function_call(znode *function_name, znode *result, const znode *argument_list, int is_method, int is_dynamic_fcall TSRMLS_DC); 491 void zend_do_return(znode *expr, int do_end_vparse TSRMLS_DC); 492 void zend_do_handle_exception(TSRMLS_D); 493 494 void zend_do_begin_lambda_function_declaration(znode *result, znode *function_token, int return_reference, int is_static TSRMLS_DC); 495 void zend_do_fetch_lexical_variable(znode *varname, zend_bool is_ref TSRMLS_DC); 496 497 void zend_do_try(znode *try_token TSRMLS_DC); 498 void zend_do_begin_catch(znode *try_token, znode *catch_class, znode *catch_var, znode *first_catch TSRMLS_DC); 499 void zend_do_end_catch(const znode *try_token TSRMLS_DC); 500 void zend_do_throw(const znode *expr TSRMLS_DC); 501 502 ZEND_API int do_bind_function(const zend_op_array *op_array, zend_op *opline, HashTable *function_table, zend_bool compile_time); 503 ZEND_API zend_class_entry *do_bind_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_bool compile_time TSRMLS_DC); 504 ZEND_API zend_class_entry *do_bind_inherited_class(const zend_op_array *op_array, const zend_op *opline, HashTable *class_table, zend_class_entry *parent_ce, zend_bool compile_time TSRMLS_DC); 505 ZEND_API void zend_do_inherit_interfaces(zend_class_entry *ce, const zend_class_entry *iface TSRMLS_DC); 506 ZEND_API void zend_do_implement_interface(zend_class_entry *ce, zend_class_entry *iface TSRMLS_DC); 507 void zend_do_implements_interface(znode *interface_znode TSRMLS_DC); 508 509 /* Trait related functions */ 510 void zend_do_use_trait(znode *trait_znode TSRMLS_DC); 511 void zend_prepare_reference(znode *result, znode *class_name, znode *method_name TSRMLS_DC); 512 void zend_add_trait_precedence(znode *method_reference, znode *trait_list TSRMLS_DC); 513 void zend_add_trait_alias(znode *method_reference, znode *modifiers, znode *alias TSRMLS_DC); 514 515 ZEND_API void zend_do_implement_trait(zend_class_entry *ce, zend_class_entry *trait TSRMLS_DC); 516 ZEND_API void zend_do_bind_traits(zend_class_entry *ce TSRMLS_DC); 517 518 ZEND_API void zend_do_inheritance(zend_class_entry *ce, zend_class_entry *parent_ce TSRMLS_DC); 519 void zend_do_early_binding(TSRMLS_D); 520 ZEND_API void zend_do_delayed_early_binding(const zend_op_array *op_array TSRMLS_DC); 521 522 void zend_do_pass_param(znode *param, zend_uchar op, int offset TSRMLS_DC); 523 524 525 void zend_do_boolean_or_begin(znode *expr1, znode *op_token TSRMLS_DC); 526 void zend_do_boolean_or_end(znode *result, const znode *expr1, const znode *expr2, znode *op_token TSRMLS_DC); 527 void zend_do_boolean_and_begin(znode *expr1, znode *op_token TSRMLS_DC); 528 void zend_do_boolean_and_end(znode *result, const znode *expr1, const znode *expr2, const znode *op_token TSRMLS_DC); 529 530 void zend_do_brk_cont(zend_uchar op, const znode *expr TSRMLS_DC); 531 532 void zend_do_switch_cond(const znode *cond TSRMLS_DC); 533 void zend_do_switch_end(const znode *case_list TSRMLS_DC); 534 void zend_do_case_before_statement(const znode *case_list, znode *case_token, const znode *case_expr TSRMLS_DC); 535 void zend_do_case_after_statement(znode *result, const znode *case_token TSRMLS_DC); 536 void zend_do_default_before_statement(const znode *case_list, znode *default_token TSRMLS_DC); 537 538 void zend_do_begin_class_declaration(const znode *class_token, znode *class_name, const znode *parent_class_name TSRMLS_DC); 539 void zend_do_end_class_declaration(const znode *class_token, const znode *parent_token TSRMLS_DC); 540 void zend_do_declare_property(const znode *var_name, const znode *value, zend_uint access_type TSRMLS_DC); 541 void zend_do_declare_class_constant(znode *var_name, const znode *value TSRMLS_DC); 542 543 void zend_do_fetch_property(znode *result, znode *object, const znode *property TSRMLS_DC); 544 545 void zend_do_halt_compiler_register(TSRMLS_D); 546 547 void zend_do_push_object(const znode *object TSRMLS_DC); 548 void zend_do_pop_object(znode *object TSRMLS_DC); 549 550 551 void zend_do_begin_new_object(znode *new_token, znode *class_type TSRMLS_DC); 552 void zend_do_end_new_object(znode *result, const znode *new_token, const znode *argument_list TSRMLS_DC); 553 554 void zend_do_fetch_constant(znode *result, znode *constant_container, znode *constant_name, int mode, zend_bool check_namespace TSRMLS_DC); 555 556 void zend_do_shell_exec(znode *result, const znode *cmd TSRMLS_DC); 557 558 void zend_do_init_array(znode *result, const znode *expr, const znode *offset, zend_bool is_ref TSRMLS_DC); 559 void zend_do_add_array_element(znode *result, const znode *expr, const znode *offset, zend_bool is_ref TSRMLS_DC); 560 void zend_do_add_static_array_element(znode *result, znode *offset, const znode *expr); 561 void zend_do_list_init(TSRMLS_D); 562 void zend_do_list_end(znode *result, znode *expr TSRMLS_DC); 563 void zend_do_add_list_element(const znode *element TSRMLS_DC); 564 void zend_do_new_list_begin(TSRMLS_D); 565 void zend_do_new_list_end(TSRMLS_D); 566 567 /* Functions for a null terminated pointer list, used for traits parsing and compilation */ 568 void zend_init_list(void *result, void *item TSRMLS_DC); 569 void zend_add_to_list(void *result, void *item TSRMLS_DC); 570 571 572 void zend_do_cast(znode *result, const znode *expr, int type TSRMLS_DC); 573 void zend_do_include_or_eval(int type, znode *result, const znode *op1 TSRMLS_DC); 574 575 void zend_do_unset(const znode *variable TSRMLS_DC); 576 void zend_do_isset_or_isempty(int type, znode *result, znode *variable TSRMLS_DC); 577 578 void zend_do_instanceof(znode *result, const znode *expr, const znode *class_znode, int type TSRMLS_DC); 579 580 void zend_do_foreach_begin(znode *foreach_token, znode *open_brackets_token, znode *array, znode *as_token, int variable TSRMLS_DC); 581 void zend_do_foreach_cont(znode *foreach_token, const znode *open_brackets_token, const znode *as_token, znode *value, znode *key TSRMLS_DC); 582 void zend_do_foreach_end(const znode *foreach_token, const znode *as_token TSRMLS_DC); 583 584 void zend_do_declare_begin(TSRMLS_D); 585 void zend_do_declare_stmt(znode *var, znode *val TSRMLS_DC); 586 void zend_do_declare_end(const znode *declare_token TSRMLS_DC); 587 588 void zend_do_exit(znode *result, const znode *message TSRMLS_DC); 589 590 void zend_do_begin_silence(znode *strudel_token TSRMLS_DC); 591 void zend_do_end_silence(const znode *strudel_token TSRMLS_DC); 592 593 void zend_do_jmp_set(const znode *value, znode *jmp_token, znode *colon_token TSRMLS_DC); 594 void zend_do_jmp_set_else(znode *result, const znode *false_value, const znode *jmp_token, const znode *colon_token TSRMLS_DC); 595 596 void zend_do_begin_qm_op(const znode *cond, znode *qm_token TSRMLS_DC); 597 void zend_do_qm_true(const znode *true_value, znode *qm_token, znode *colon_token TSRMLS_DC); 598 void zend_do_qm_false(znode *result, const znode *false_value, const znode *qm_token, const znode *colon_token TSRMLS_DC); 599 600 void zend_do_extended_info(TSRMLS_D); 601 void zend_do_extended_fcall_begin(TSRMLS_D); 602 void zend_do_extended_fcall_end(TSRMLS_D); 603 604 void zend_do_ticks(TSRMLS_D); 605 606 void zend_do_abstract_method(const znode *function_name, znode *modifiers, const znode *body TSRMLS_DC); 607 608 void zend_do_declare_constant(znode *name, znode *value TSRMLS_DC); 609 void zend_do_build_namespace_name(znode *result, znode *prefix, znode *name TSRMLS_DC); 610 void zend_do_begin_namespace(const znode *name, zend_bool with_brackets TSRMLS_DC); 611 void zend_do_end_namespace(TSRMLS_D); 612 void zend_verify_namespace(TSRMLS_D); 613 void zend_do_use(znode *name, znode *new_name, int is_global TSRMLS_DC); 614 void zend_do_end_compilation(TSRMLS_D); 615 616 void zend_do_label(znode *label TSRMLS_DC); 617 void zend_do_goto(const znode *label TSRMLS_DC); 618 void zend_resolve_goto_label(zend_op_array *op_array, zend_op *opline, int pass2 TSRMLS_DC); 619 void zend_release_labels(int temporary TSRMLS_DC); 620 621 ZEND_API void function_add_ref(zend_function *function); 622 623 #define INITIAL_OP_ARRAY_SIZE 64 624 #define INITIAL_INTERACTIVE_OP_ARRAY_SIZE 8192 625 626 627 /* helper functions in zend_language_scanner.l */ 628 ZEND_API zend_op_array *compile_file(zend_file_handle *file_handle, int type TSRMLS_DC); 629 ZEND_API zend_op_array *compile_string(zval *source_string, char *filename TSRMLS_DC); 630 ZEND_API zend_op_array *compile_filename(int type, zval *filename TSRMLS_DC); 631 ZEND_API int zend_execute_scripts(int type TSRMLS_DC, zval **retval, int file_count, ...); 632 ZEND_API int open_file_for_scanning(zend_file_handle *file_handle TSRMLS_DC); 633 ZEND_API void init_op_array(zend_op_array *op_array, zend_uchar type, int initial_ops_size TSRMLS_DC); 634 ZEND_API void destroy_op_array(zend_op_array *op_array TSRMLS_DC); 635 ZEND_API void zend_destroy_file_handle(zend_file_handle *file_handle TSRMLS_DC); 636 ZEND_API int zend_cleanup_class_data(zend_class_entry **pce TSRMLS_DC); 637 ZEND_API int zend_cleanup_user_class_data(zend_class_entry **pce TSRMLS_DC); 638 ZEND_API void zend_cleanup_internal_class_data(zend_class_entry *ce TSRMLS_DC); 639 ZEND_API void zend_cleanup_internal_classes(TSRMLS_D); 640 ZEND_API int zend_cleanup_function_data(zend_function *function TSRMLS_DC); 641 ZEND_API int zend_cleanup_function_data_full(zend_function *function TSRMLS_DC); 642 ZEND_API int clean_non_persistent_function_full(zend_function *function TSRMLS_DC); 643 ZEND_API int clean_non_persistent_class_full(zend_class_entry **ce TSRMLS_DC); 644 645 ZEND_API void destroy_zend_function(zend_function *function TSRMLS_DC); 646 ZEND_API void zend_function_dtor(zend_function *function); 647 ZEND_API void destroy_zend_class(zend_class_entry **pce); 648 void zend_class_add_ref(zend_class_entry **ce); 649 650 ZEND_API void zend_mangle_property_name(char **dest, int *dest_length, const char *src1, int src1_length, const char *src2, int src2_length, int internal); 651 ZEND_API int zend_unmangle_property_name(const char *mangled_property, int mangled_property_len, const char **class_name, const char **prop_name); 652 653 #define ZEND_FUNCTION_DTOR (void (*)(void *)) zend_function_dtor 654 #define ZEND_CLASS_DTOR (void (*)(void *)) destroy_zend_class 655 656 zend_op *get_next_op(zend_op_array *op_array TSRMLS_DC); 657 void init_op(zend_op *op TSRMLS_DC); 658 int get_next_op_number(zend_op_array *op_array); 659 int print_class(zend_class_entry *class_entry TSRMLS_DC); 660 void print_op_array(zend_op_array *op_array, int optimizations); 661 ZEND_API int pass_two(zend_op_array *op_array TSRMLS_DC); 662 zend_brk_cont_element *get_next_brk_cont_element(zend_op_array *op_array); 663 void zend_do_first_catch(znode *open_parentheses TSRMLS_DC); 664 void zend_initialize_try_catch_element(const znode *try_token TSRMLS_DC); 665 void zend_do_mark_last_catch(const znode *first_catch, const znode *last_additional_catch TSRMLS_DC); 666 ZEND_API zend_bool zend_is_compiling(TSRMLS_D); 667 ZEND_API char *zend_make_compiled_string_description(const char *name TSRMLS_DC); 668 ZEND_API void zend_initialize_class_data(zend_class_entry *ce, zend_bool nullify_handlers TSRMLS_DC); 669 int zend_get_class_fetch_type(const char *class_name, uint class_name_len); 670 671 typedef zend_bool (*zend_auto_global_callback)(const char *name, uint name_len TSRMLS_DC); 672 typedef struct _zend_auto_global { 673 const char *name; 674 uint name_len; 675 zend_auto_global_callback auto_global_callback; 676 zend_bool jit; 677 zend_bool armed; 678 } zend_auto_global; 679 680 ZEND_API int zend_register_auto_global(const char *name, uint name_len, zend_bool jit, zend_auto_global_callback auto_global_callback TSRMLS_DC); 681 ZEND_API void zend_activate_auto_globals(TSRMLS_D); 682 ZEND_API zend_bool zend_is_auto_global(const char *name, uint name_len TSRMLS_DC); 683 ZEND_API zend_bool zend_is_auto_global_quick(const char *name, uint name_len, ulong hashval TSRMLS_DC); 684 ZEND_API size_t zend_dirname(char *path, size_t len); 685 686 int zendlex(znode *zendlval TSRMLS_DC); 687 688 int zend_add_literal(zend_op_array *op_array, const zval *zv TSRMLS_DC); 689 690 /* BEGIN: OPCODES */ 691 692 #include "zend_vm_opcodes.h" 693 694 #define ZEND_OP_DATA 137 695 696 /* END: OPCODES */ 697 698 /* class fetches */ 699 #define ZEND_FETCH_CLASS_DEFAULT 0 700 #define ZEND_FETCH_CLASS_SELF 1 701 #define ZEND_FETCH_CLASS_PARENT 2 702 #define ZEND_FETCH_CLASS_MAIN 3 703 #define ZEND_FETCH_CLASS_GLOBAL 4 704 #define ZEND_FETCH_CLASS_AUTO 5 705 #define ZEND_FETCH_CLASS_INTERFACE 6 706 #define ZEND_FETCH_CLASS_STATIC 7 707 #define ZEND_FETCH_CLASS_TRAIT 14 708 #define ZEND_FETCH_CLASS_MASK 0x0f 709 #define ZEND_FETCH_CLASS_NO_AUTOLOAD 0x80 710 #define ZEND_FETCH_CLASS_SILENT 0x0100 711 712 /* variable parsing type (compile-time) */ 713 #define ZEND_PARSED_MEMBER (1<<0) 714 #define ZEND_PARSED_METHOD_CALL (1<<1) 715 #define ZEND_PARSED_STATIC_MEMBER (1<<2) 716 #define ZEND_PARSED_FUNCTION_CALL (1<<3) 717 #define ZEND_PARSED_VARIABLE (1<<4) 718 #define ZEND_PARSED_REFERENCE_VARIABLE (1<<5) 719 #define ZEND_PARSED_NEW (1<<6) 720 721 722 /* unset types */ 723 #define ZEND_UNSET_REG 0 724 725 /* var status for backpatching */ 726 #define BP_VAR_R 0 727 #define BP_VAR_W 1 728 #define BP_VAR_RW 2 729 #define BP_VAR_IS 3 730 #define BP_VAR_NA 4 /* if not applicable */ 731 #define BP_VAR_FUNC_ARG 5 732 #define BP_VAR_UNSET 6 733 734 735 #define ZEND_INTERNAL_FUNCTION 1 736 #define ZEND_USER_FUNCTION 2 737 #define ZEND_OVERLOADED_FUNCTION 3 738 #define ZEND_EVAL_CODE 4 739 #define ZEND_OVERLOADED_FUNCTION_TEMPORARY 5 740 741 #define ZEND_INTERNAL_CLASS 1 742 #define ZEND_USER_CLASS 2 743 744 #define ZEND_EVAL (1<<0) 745 #define ZEND_INCLUDE (1<<1) 746 #define ZEND_INCLUDE_ONCE (1<<2) 747 #define ZEND_REQUIRE (1<<3) 748 #define ZEND_REQUIRE_ONCE (1<<4) 749 750 #define ZEND_CT (1<<0) 751 #define ZEND_RT (1<<1) 752 753 /* global/local fetches */ 754 #define ZEND_FETCH_GLOBAL 0x00000000 755 #define ZEND_FETCH_LOCAL 0x10000000 756 #define ZEND_FETCH_STATIC 0x20000000 757 #define ZEND_FETCH_STATIC_MEMBER 0x30000000 758 #define ZEND_FETCH_GLOBAL_LOCK 0x40000000 759 #define ZEND_FETCH_LEXICAL 0x50000000 760 761 #define ZEND_FETCH_TYPE_MASK 0x70000000 762 763 #define ZEND_FETCH_STANDARD 0x00000000 764 #define ZEND_FETCH_ADD_LOCK 0x08000000 765 #define ZEND_FETCH_MAKE_REF 0x04000000 766 767 #define ZEND_ISSET 0x02000000 768 #define ZEND_ISEMPTY 0x01000000 769 #define ZEND_ISSET_ISEMPTY_MASK (ZEND_ISSET | ZEND_ISEMPTY) 770 #define ZEND_QUICK_SET 0x00800000 771 772 #define ZEND_FETCH_ARG_MASK 0x000fffff 773 774 #define ZEND_FE_FETCH_BYREF 1 775 #define ZEND_FE_FETCH_WITH_KEY 2 776 777 #define ZEND_FE_RESET_VARIABLE (1<<0) 778 #define ZEND_FE_RESET_REFERENCE (1<<1) 779 #define EXT_TYPE_FREE_ON_RETURN (1<<2) 780 781 #define ZEND_MEMBER_FUNC_CALL 1<<0 782 783 #define ZEND_ARG_SEND_BY_REF (1<<0) 784 #define ZEND_ARG_COMPILE_TIME_BOUND (1<<1) 785 #define ZEND_ARG_SEND_FUNCTION (1<<2) 786 #define ZEND_ARG_SEND_SILENT (1<<3) 787 788 #define ZEND_SEND_BY_VAL 0 789 #define ZEND_SEND_BY_REF 1 790 #define ZEND_SEND_PREFER_REF 2 791 792 #define CHECK_ARG_SEND_TYPE(zf, arg_num, m1, m2) \ 793 ((zf) && \ 794 ((((zend_function*)(zf))->common.arg_info && \ 795 arg_num <= ((zend_function*)(zf))->common.num_args) ? \ 796 (((zend_function *)(zf))->common.arg_info[arg_num-1].pass_by_reference & (m1)) : \ 797 (((zend_function *)(zf))->common.fn_flags & (m2)))) 798 799 #define ARG_MUST_BE_SENT_BY_REF(zf, arg_num) \ 800 CHECK_ARG_SEND_TYPE(zf, arg_num, ZEND_SEND_BY_REF, ZEND_ACC_PASS_REST_BY_REFERENCE) 801 802 #define ARG_SHOULD_BE_SENT_BY_REF(zf, arg_num) \ 803 CHECK_ARG_SEND_TYPE(zf, arg_num, ZEND_SEND_BY_REF|ZEND_SEND_PREFER_REF, ZEND_ACC_PASS_REST_BY_REFERENCE|ZEND_ACC_PASS_REST_PREFER_REF) 804 805 #define ARG_MAY_BE_SENT_BY_REF(zf, arg_num) \ 806 CHECK_ARG_SEND_TYPE(zf, arg_num, ZEND_SEND_PREFER_REF, ZEND_ACC_PASS_REST_PREFER_REF) 807 808 #define ZEND_RETURN_VAL 0 809 #define ZEND_RETURN_REF 1 810 811 812 #define ZEND_RETURNS_FUNCTION 1<<0 813 #define ZEND_RETURNS_NEW 1<<1 814 815 END_EXTERN_C() 816 817 #define ZEND_CLONE_FUNC_NAME "__clone" 818 #define ZEND_CONSTRUCTOR_FUNC_NAME "__construct" 819 #define ZEND_DESTRUCTOR_FUNC_NAME "__destruct" 820 #define ZEND_GET_FUNC_NAME "__get" 821 #define ZEND_SET_FUNC_NAME "__set" 822 #define ZEND_UNSET_FUNC_NAME "__unset" 823 #define ZEND_ISSET_FUNC_NAME "__isset" 824 #define ZEND_CALL_FUNC_NAME "__call" 825 #define ZEND_CALLSTATIC_FUNC_NAME "__callstatic" 826 #define ZEND_TOSTRING_FUNC_NAME "__tostring" 827 #define ZEND_AUTOLOAD_FUNC_NAME "__autoload" 828 829 /* The following constants may be combined in CG(compiler_options) 830 * to change the default compiler behavior */ 831 832 /* generate extended debug information */ 833 #define ZEND_COMPILE_EXTENDED_INFO (1<<0) 834 835 /* call op_array handler of extendions */ 836 #define ZEND_COMPILE_HANDLE_OP_ARRAY (1<<1) 837 838 /* generate ZEND_DO_FCALL_BY_NAME for internal functions instead of ZEND_DO_FCALL */ 839 #define ZEND_COMPILE_IGNORE_INTERNAL_FUNCTIONS (1<<2) 840 841 /* don't perform early binding for classes inherited form internal ones; 842 * in namespaces assume that internal class that doesn't exist at compile-time 843 * may apper in run-time */ 844 #define ZEND_COMPILE_IGNORE_INTERNAL_CLASSES (1<<3) 845 846 /* generate ZEND_DECLARE_INHERITED_CLASS_DELAYED opcode to delay early binding */ 847 #define ZEND_COMPILE_DELAYED_BINDING (1<<4) 848 849 /* disable constant substitution at compile-time */ 850 #define ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION (1<<5) 851 852 /* The default value for CG(compiler_options) */ 853 #define ZEND_COMPILE_DEFAULT ZEND_COMPILE_HANDLE_OP_ARRAY 854 855 /* The default value for CG(compiler_options) during eval() */ 856 #define ZEND_COMPILE_DEFAULT_FOR_EVAL 0 857 858 #endif /* ZEND_COMPILE_H */ 859 860 /* 861 * Local variables: 862 * tab-width: 4 863 * c-basic-offset: 4 864 * indent-tabs-mode: t 865 * End: 866 */ 867
