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[m6w6/ext-psi] / src / context.c
1 #ifdef HAVE_CONFIG_H
2 # include "config.h"
3 #endif
4
5 #include "php.h"
6
7 #include <stdio.h>
8 #ifdef HAVE_SYS_TYPES_H
9 # include <sys/types.h>
10 #endif
11 #ifdef HAVE_SYS_STAT_H
12 # include <sys/stat.h>
13 #endif
14 #ifdef STDC_HEADERS
15 # include <stdlib.h>
16 # include <stddef.h>
17 #else
18 # ifdef HAVE_STDLIB_H
19 # include <stdlib.h>
20 # endif
21 #endif
22 #ifdef HAVE_STRING_H
23 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
24 # include <memory.h>
25 # endif
26 # include <string.h>
27 #endif
28 #ifdef HAVE_STRINGS_H
29 # include <strings.h>
30 #endif
31 #ifdef HAVE_INTTYPES_H
32 # include <inttypes.h>
33 #endif
34 #ifdef HAVE_STDINT_H
35 # include <stdint.h>
36 #endif
37 #ifdef HAVE_UNISTD_H
38 # include <unistd.h>
39 #endif
40
41 #ifdef HAVE_ERRNO_H
42 # include <errno.h>
43 #endif
44 #ifdef HAVE_GLOB_H
45 # include <glob.h>
46 #endif
47 #ifdef HAVE_NETINET_IN_H
48 # include <netinet/in.h>
49 #endif
50 #ifdef HAVE_ARPA_NAMESER_H
51 # include <arpa/nameser.h>
52 #endif
53 #ifdef HAVE_NETDB_H
54 # include <netdb.h>
55 #endif
56 #ifdef HAVE_RESOLV_H
57 # include <resolv.h>
58 #endif
59 #ifdef HAVE_SYS_SELECT_H
60 # include <sys/select.h>
61 #endif
62 #ifdef HAVE_SYS_SOCKET_H
63 # include <sys/socket.h>
64 #endif
65 #ifdef HAVE_SYS_TIME_H
66 # include <sys/time.h>
67 #endif
68 #ifdef HAVE_SYS_TIMES_H
69 # include <sys/times.h>
70 #endif
71 #ifdef HAVE_SYS_UIO_H
72 # include <sys/uio.h>
73 #endif
74 #ifdef HAVE_SYS_UTSNAME_H
75 # include <sys/utsname.h>
76 #endif
77 #ifdef HAVE_TIME_H
78 # include <time.h>
79 #endif
80 #ifdef HAVE_SYSLOG_H
81 # include <syslog.h>
82 #endif
83 #ifdef HAVE_WCHAR_H
84 # include <wchar.h>
85 #endif
86
87 #ifdef HAVE_DIRENT_H
88 # include <dirent.h>
89 # define NAMLEN(dirent) strlen ((dirent)->d_name)
90 #else
91 # define dirent direct
92 # define NAMLEN(dirent) ((dirent)->d_namlen)
93 # ifdef HAVE_SYS_NDIR_H
94 # include <sys/ndir.h>
95 # endif
96 # ifdef HAVE_SYS_DIR_H
97 # include <sys/dir.h>
98 # endif
99 # ifdef HAVE_NDIR_H
100 # include <ndir.h>
101 # endif
102 #endif
103
104 #include <sys/param.h>
105 #include <dlfcn.h>
106 #include <fnmatch.h>
107
108 #include "php.h"
109 #include "php_scandir.h"
110 #include "php_psi.h"
111
112 #include "libjit.h"
113 #include "libffi.h"
114
115 static struct psi_std_type {
116 token_t type_tag;
117 const char *type_name;
118 } psi_std_types[] = {
119 {PSI_T_FLOAT, "float"},
120 {PSI_T_DOUBLE, "double"},
121 {PSI_T_INT8, "int8_t"},
122 {PSI_T_INT16, "int16_t"},
123 {PSI_T_INT32, "int32_t"},
124 {PSI_T_INT64, "int64_t"},
125 {PSI_T_UINT8, "uint8_t"},
126 {PSI_T_UINT16, "uint16_t"},
127 {PSI_T_UINT32, "uint32_t"},
128 {PSI_T_UINT64, "uint64_t"},
129 {0}
130 };
131
132 static struct psi_predef_type {
133 token_t type_tag;
134 const char *type_name;
135 const char *alias;
136 } psi_predef_types[] = {
137 PSI_TYPES
138 {0}
139 };
140
141 static struct psi_predef_const {
142 token_t type_tag;
143 const char *type_name;
144 const char *var_name;
145 const char *val_text;
146 token_t val_type_tag;
147 } psi_predef_consts[] = {
148 PSI_CONSTS
149 {0}
150 };
151
152 PSI_MACROS
153
154 int psi_glob(const char *pattern, int flags,
155 int (*errfunc) (const char *epath, int eerrno),
156 glob_t *pglob) {
157 size_t offs = flags & GLOB_DOOFFS ? pglob->gl_offs : 0;
158 int rv = glob(pattern, flags, errfunc, pglob);
159 if (pglob->gl_pathv) {
160 while (offs--) {
161 pglob->gl_pathv[offs] = NULL;
162 }
163 }
164 return rv;
165 }
166
167 static struct psi_func_redir {
168 const char *name;
169 void (*func)(void);
170 } psi_func_redirs[] = {
171 {"glob", (void (*)(void)) psi_glob},
172 PSI_REDIRS
173 {0}
174 };
175
176 static struct psi_predef_decl {
177 token_t type_tag;
178 const char *type_name;
179 const char *var_name;
180 size_t pointer_level;
181 size_t array_size;
182 } psi_predef_decls[] = {
183 PSI_DECLS
184 {0}
185 };
186 static struct psi_predef_decl psi_predef_vararg_decls[] = {
187 PSI_VA_DECLS
188 {0}
189 };
190
191 static struct psi_predef_struct {
192 token_t type_tag;
193 const char *type_name;
194 const char *var_name;
195 size_t offset;
196 size_t size;
197 size_t pointer_level;
198 size_t array_size;
199 } psi_predef_structs[] = {
200 PSI_STRUCTS
201 {0}
202 };
203
204 static int validate_lib(PSI_Data *data, void **dlopened) {
205 char lib[MAXPATHLEN];
206 const char *ptr = data->psi.file.ln;
207 size_t len;
208
209 if (!ptr) {
210 /* FIXME: assume stdlib */
211 return 1;
212 } else if (!strchr(ptr, '/')) {
213 len = snprintf(lib, MAXPATHLEN, "lib%s.%s", ptr, PHP_PSI_SHLIB_SUFFIX);
214 if (MAXPATHLEN == len) {
215 data->error(PSI_WARNING, "Library name too long: '%s'", ptr);
216 }
217 lib[len] = 0;
218 ptr = lib;
219 }
220 if (!(*dlopened = dlopen(ptr, RTLD_LAZY|RTLD_LOCAL))) {
221 data->error(PSI_WARNING, "Could not open library '%s': %s.",
222 data->psi.file.ln, dlerror());
223 return 0;
224 }
225 return 1;
226 }
227
228 static inline int locate_decl_type_alias(decl_typedefs *defs, decl_type *type) {
229 size_t i;
230 struct psi_std_type *stdtyp;
231
232 if (type->real) {
233 return 1;
234 }
235 for (i = 0; i < defs->count; ++i) {
236 decl_typedef *def = defs->list[i];
237
238 if (def->type->type != type->type && !strcmp(def->alias, type->name)) {
239 type->real = def->type;
240 return 1;
241 }
242 }
243 for (stdtyp = &psi_std_types[0]; stdtyp->type_tag; ++stdtyp) {
244 if (!strcmp(type->name, stdtyp->type_name)) {
245 type->type = stdtyp->type_tag;
246 return 1;
247 }
248 }
249
250 return 0;
251 }
252 static inline int locate_decl_type_struct(decl_structs *structs, decl_type *type) {
253 size_t i;
254
255 if (type->strct) {
256 return 1;
257 }
258 for (i = 0; i < structs->count; ++i) {
259 if (!strcmp(structs->list[i]->name, type->name)) {
260 type->strct = structs->list[i];
261 return 1;
262 }
263 }
264 return 0;
265 }
266
267 static inline int validate_decl_type(PSI_Data *data, decl_type *type) {
268 switch (type->type) {
269 case PSI_T_NAME:
270 if (!data->defs || !locate_decl_type_alias(data->defs, type)) {
271 return 0;
272 }
273 if (type->real) {
274 return validate_decl_type(data, type->real);
275 }
276 return 1;
277 case PSI_T_STRUCT:
278 if (!data->structs || !locate_decl_type_struct(data->structs, type)) {
279 return 0;
280 }
281 break;
282 }
283 return 1;
284 }
285 static inline int validate_decl_typedef(PSI_Data *data, decl_typedef *def) {
286 if (!validate_decl_type(data, def->type)) {
287 data->error(PSI_WARNING, "Type '%s' cannot be aliased to %s'%s'",
288 def->type->name, def->type->type == PSI_T_STRUCT?"struct ":"",def->alias);
289 return 0;
290 }
291 /* FIXME: check def->alias */
292 return 1;
293 }
294
295 static inline int validate_constant(PSI_Data *data, constant *c) {
296 /* FIXME */
297 return 1;
298 }
299
300 static inline int validate_decl_arg(PSI_Data *data, decl_arg *arg) {
301 if (!validate_decl_type(data, arg->type)) {
302 data->error(PSI_WARNING, "Cannot use '%s'(%d) as type for decl var '%s'"
303 " in %s on line %zu at col %zu",
304 arg->type->name, arg->type->type, arg->var->name,
305 arg->type->token->file, arg->type->token->line, arg->type->token->col);
306 return 0;
307 }
308 return 1;
309 }
310
311 static inline int validate_decl_struct(PSI_Data *data, decl_struct *s) {
312 size_t i;
313
314 for (i = 0; i < s->args->count; ++i) {
315 if (!validate_decl_arg(data, s->args->args[i])) {
316 return 0;
317 }
318 }
319
320 for (i = 0; i < s->args->count; ++i) {
321 decl_arg *darg = s->args->args[i];
322
323 if (!validate_decl_arg(data, darg)) {
324 return 0;
325 }
326
327 ZEND_ASSERT(!darg->var->arg || darg->var->arg == darg);
328 darg->var->arg = darg;
329
330 if (!darg->layout) {
331 token_t t;
332
333 if (darg->var->pointer_level && (!darg->var->array_size || darg->var->pointer_level == 1)) {
334 t = PSI_T_POINTER;
335 } else {
336 t = real_decl_type(darg->type)->type;
337 }
338
339 if (i) {
340 decl_arg *last = s->args->args[i-1];
341 darg->layout = init_decl_struct_layout(
342 psi_t_align(t, last->layout->pos + last->layout->len),
343 psi_t_size(t) * darg->var->array_size);
344 } else {
345 darg->layout = init_decl_struct_layout(0, psi_t_size(t));
346 }
347 }
348 if (s->size < darg->layout->pos + darg->layout->len) {
349 s->size = darg->layout->pos + darg->layout->len;
350 }
351 }
352 return 1;
353 }
354
355 static const char * const abi_ccs[] = {
356 "default", /* \ */
357 "extern", /* > - all the same */
358 "cdecl", /* / */
359 "stdcall",
360 "fastcall",
361 };
362 static inline int validate_decl_abi(PSI_Data *data, decl_abi *abi) {
363 size_t i;
364
365 for (i = 0; i < sizeof(abi_ccs)/sizeof(char*); ++i) {
366 if (strcasecmp(abi->convention, abi_ccs[i])) {
367 return 1;
368 }
369 }
370 data->error(PSI_WARNING, "Invalid calling convention: '%s'", abi->convention);
371 return 0;
372 }
373 static inline int validate_decl_func(PSI_Data *data, void *dl, decl *decl, decl_arg *func)
374 {
375 struct psi_func_redir *redir;
376
377 if (!strcmp(func->var->name, "dlsym")) {
378 data->error(PSI_WARNING, "Cannot dlsym dlsym (sic!)");
379 return 0;
380 }
381
382 if (!validate_decl_arg(data, func)) {
383 return 0;
384 }
385 for (redir = &psi_func_redirs[0]; redir->name; ++redir) {
386 if (!strcmp(func->var->name, redir->name)) {
387 decl->call.sym = redir->func;
388 }
389 }
390 if (!decl->call.sym) {
391 #ifndef RTLD_NEXT
392 # define RTLD_NEXT ((void *) -1l)
393 #endif
394 decl->call.sym = dlsym(dl ?: RTLD_NEXT, func->var->name);
395 if (!decl->call.sym) {
396 data->error(PSI_WARNING, "Failed to locate symbol '%s': %s",
397 func->var->name, dlerror());
398 }
399 }
400 return 1;
401 }
402
403 static inline int validate_decl(PSI_Data *data, void *dl, decl *decl) {
404 if (!validate_decl_abi(data, decl->abi)) {
405 return 0;
406 }
407 if (!validate_decl_func(data, dl, decl, decl->func)) {
408 return 0;
409 }
410 if (decl->args) {
411 size_t i;
412
413 for (i = 0; i < decl->args->count; ++i) {
414 if (!validate_decl_arg(data, decl->args->args[i])) {
415 return 0;
416 }
417 }
418 }
419 return 1;
420 }
421 static inline decl_arg *locate_decl_var_arg(decl_var *var, decl_args *args, decl_arg *func) {
422 size_t i;
423
424 for (i = 0; i < args->count; ++i) {
425 decl_arg *arg = args->args[i];
426
427 if (!strcmp(var->name, arg->var->name)) {
428 ZEND_ASSERT(!var->arg || var->arg == arg);
429 return var->arg = arg;
430 }
431 }
432 if (func && !strcmp(var->name, func->var->name)) {
433 return var->arg = func;
434 }
435
436 return NULL;
437 }
438 static inline decl_arg *locate_struct_member(decl_struct *s, decl_var *var) {
439 if (s->args) {
440 return locate_decl_var_arg(var, s->args, NULL);
441 }
442
443 return NULL;
444 }
445 static inline constant *locate_num_exp_constant(num_exp *exp, constants *consts) {
446 size_t i;
447
448 for (i = 0; i < consts->count; ++i) {
449 constant *cnst = consts->list[i];
450
451 if (!strcmp(cnst->name, exp->u.numb)) {
452 free(exp->u.numb);
453 return exp->u.cnst = cnst;
454 }
455 }
456
457 return NULL;
458 }
459 static inline int validate_num_exp(PSI_Data *data, decl_args *dargs, decl_arg *func, num_exp *exp) {
460 if (exp->operand) {
461 switch (exp->operator) {
462 case PSI_T_PLUS:
463 exp->calculator = psi_calc_add;
464 break;
465 case PSI_T_MINUS:
466 exp->calculator = psi_calc_sub;
467 break;
468 case PSI_T_ASTERISK:
469 exp->calculator = psi_calc_mul;
470 break;
471 case PSI_T_SLASH:
472 exp->calculator = psi_calc_div;
473 break;
474 EMPTY_SWITCH_DEFAULT_CASE();
475 }
476 if (!validate_num_exp(data, dargs, func, exp->operand)) {
477 return 0;
478 }
479 }
480 switch (exp->t) {
481 case PSI_T_NAME:
482 if (!locate_decl_var_arg(exp->u.dvar, dargs, func)) {
483 data->error(PSI_WARNING, "Unknown variable '%s' in numeric expression",
484 exp->u.dvar->name);
485 return 0;
486 }
487 return 1;
488 case PSI_T_NSNAME:
489 if (!locate_num_exp_constant(exp, data->consts)) {
490 data->error(PSI_WARNING, "Unknown constant '%s' in numeric expression",
491 exp->u.numb);
492 return 0;
493 }
494 return 1;
495 case PSI_T_NUMBER:
496 return 1;
497 default:
498 return 0;
499 }
500 }
501 static inline int validate_set_value_handler(set_value *set) {
502 switch (set->func->type) {
503 case PSI_T_TO_BOOL:
504 set->func->handler = psi_to_bool;
505 break;
506 case PSI_T_TO_INT:
507 set->func->handler = psi_to_int;
508 break;
509 case PSI_T_TO_FLOAT:
510 set->func->handler = psi_to_double;
511 break;
512 case PSI_T_TO_STRING:
513 set->func->handler = psi_to_string;
514 break;
515 case PSI_T_TO_ARRAY:
516 set->func->handler = psi_to_array;
517 break;
518 case PSI_T_TO_OBJECT:
519 set->func->handler = psi_to_object;
520 break;
521 case PSI_T_VOID:
522 set->func->handler = psi_to_void;
523 break;
524 default:
525 return 0;
526 }
527 return 1;
528 }
529 static inline void decl_var_arg_v(decl_args *args, va_list argp) {
530 int argc;
531 decl_arg **argv;
532
533 memset(args, 0, sizeof(*args));
534
535 while ((argc = va_arg(argp, int))) {
536 argv = va_arg(argp, decl_arg **);
537 while (argc--) {
538 add_decl_arg(args, *argv++);
539 }
540 }
541 }
542 static inline int validate_set_value_ex(PSI_Data *data, set_value *set, decl_arg *ref, decl_args *ref_list) {
543 size_t i;
544 decl_type *ref_type;
545 decl_var *set_var = set->vars->vars[0];
546
547 if (!validate_set_value_handler(set)) {
548 data->error(PSI_WARNING, "Invalid cast '%s'", set->func->name);
549 return 0;
550 }
551
552 for (i = 0; i < set->vars->count; ++i) {
553 decl_var *svar = set->vars->vars[i];
554 if (!svar->arg && !locate_decl_var_arg(svar, ref_list, NULL)) {
555 data->error(PSI_WARNING, "Unknown variable '%s'", svar->name);
556 return 0;
557 }
558 }
559
560 if (!ref) {
561 ref = set_var->arg;
562 }
563 ref_type = real_decl_type(ref->type);
564
565 if (set->count) {
566 int is_to_array = (set->func->type == PSI_T_TO_ARRAY);
567 int is_pointer_to_struct = (ref_type->type == PSI_T_STRUCT && ref->var->pointer_level);
568
569 if (!is_to_array && !is_pointer_to_struct) {
570 data->error(E_WARNING, "Inner `set` statement casts only work with "
571 "to_array() casts on structs or pointers: %s(%s...", set->func->name, set->vars->vars[0]->name);
572 return 0;
573 }
574 }
575 if (set->num) {
576 if (!validate_num_exp(data, ref_list, ref, set->num)) {
577 return 0;
578 }
579 }
580
581 if (ref_type->type == PSI_T_STRUCT) {
582 /* to_array(struct, to_...) */
583 for (i = 0; i < set->count; ++i) {
584 decl_var *sub_var = set->inner[i]->vars->vars[0];
585 decl_arg *sub_ref = locate_struct_member(ref_type->strct, sub_var);
586
587 set->inner[i]->outer.set = set;
588 if (sub_ref) {
589 if (!validate_set_value_ex(data, set->inner[i], sub_ref, ref_type->strct->args)) {
590 return 0;
591 }
592 }
593 }
594 } else if (set->count == 1) {
595 /* to_array(ptr, to_string(*ptr)) */
596 decl_var *sub_var = set->inner[0]->vars->vars[0];
597 decl_arg *sub_ref = locate_decl_var_arg(sub_var, ref_list, ref);
598
599 set->inner[0]->outer.set = set;
600 if (sub_ref) {
601 if (strcmp(sub_var->name, set_var->name)) {
602 data->error(E_WARNING, "Inner `set` statement casts on pointers must reference the same variable");
603 return 0;
604 }
605 if (!validate_set_value_ex(data, set->inner[0], sub_ref, ref_list)) {
606 return 0;
607 }
608 }
609 } else if (set->count > 1) {
610 data->error(E_WARNING, "Inner `set` statement casts on pointers may only occur once");
611 return 0;
612 }
613
614 return 1;
615 }
616 static inline int validate_set_value(PSI_Data *data, set_value *set, ...) {
617 va_list argp;
618 decl_args args = {0};
619 int check;
620
621 va_start(argp, set);
622 decl_var_arg_v(&args, argp);
623 va_end(argp);
624
625 check = validate_set_value_ex(data, set, NULL, &args);
626 if (args.args) {
627 free(args.args);
628 }
629 return check;
630 }
631 static inline decl *locate_impl_decl(decls *decls, return_stmt *ret) {
632 if (decls) {
633 size_t i;
634
635 for (i = 0; i < decls->count; ++i) {
636 if (!strcmp(decls->list[i]->func->var->name, ret->set->vars->vars[0]->name)) {
637 ret->decl = decls->list[i]->func;
638 return decls->list[i];
639 }
640 }
641 }
642
643 return NULL;
644 }
645 static inline int validate_impl_ret_stmt(PSI_Data *data, impl *impl) {
646 return_stmt *ret;
647
648 /* we must have exactly one ret stmt delcaring the native func to call */
649 /* and which type cast to apply */
650 if (impl->stmts->ret.count != 1) {
651 if (impl->stmts->ret.count > 1) {
652 data->error(PSI_WARNING, "Too many `return` statements for implmentation %s;"
653 " found %zu, exactly one is needed",
654 impl->func->name, impl->stmts->ret.count);
655 } else {
656 data->error(PSI_WARNING, "Missing `return` statement for implementation %s",
657 impl->func->name);
658 }
659 return 0;
660 }
661
662 ret = impl->stmts->ret.list[0];
663
664 if (!(impl->decl = locate_impl_decl(data->decls, ret))) {
665 data->error(PSI_WARNING, "Missing declaration for implementation %s",
666 impl->func->name);
667 return 0;
668 }
669
670 if (!validate_set_value(data, ret->set, 1, &ret->decl, impl->decl->args ? (int) impl->decl->args->count : 0, impl->decl->args ? impl->decl->args->args : NULL, 0)) {
671 return 0;
672 }
673
674 impl->decl->impl = impl;
675
676 return 1;
677 }
678
679 static inline int validate_impl_let_stmts(PSI_Data *data, impl *impl) {
680 size_t i, j;
681 /* we can have multiple let stmts */
682
683 /* check that we have a decl arg for every let stmt */
684 for (i = 0; i < impl->stmts->let.count; ++i) {
685 let_stmt *let = impl->stmts->let.list[i];
686 decl_var *let_var;
687 int check = 0;
688
689 if (let->val && let->val->kind == PSI_LET_TMP) {
690 let_var = let->val->data.var;
691 } else {
692 let_var = let->var;
693 }
694
695 if (!locate_decl_var_arg(let_var, impl->decl->args, impl->decl->func)) {
696 data->error(PSI_WARNING, "Unknown variable '%s' in `let` statement"
697 " of implementation '%s'", let_var->name, impl->func->name);
698 return 0;
699 }
700
701 switch (let->val->kind) {
702 case PSI_LET_NULL:
703 break;
704 case PSI_LET_TMP:
705 /* e.g. let bar = &strval($bar); // decl_arg(char **bar) */
706 /* e.g. let foo = *bar; */
707 let->var->pointer_level = let->val->data.var->pointer_level;
708 let->var->arg = init_decl_arg(
709 init_decl_type(
710 real_decl_type(let->val->data.var->arg->type)->type,
711 real_decl_type(let->val->data.var->arg->type)->name),
712 init_decl_var(
713 let->var->name,
714 let->var->pointer_level,
715 let->var->array_size));
716 break;
717 case PSI_LET_NUMEXP:
718 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.num)) {
719 return 0;
720 }
721 break;
722 case PSI_LET_CALLOC:
723 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->nmemb)) {
724 return 0;
725 }
726 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->size)) {
727 return 0;
728 }
729 break;
730 case PSI_LET_FUNC:
731 if (impl->func->args) {
732 for (j = 0; j < impl->func->args->count; ++j) {
733 impl_arg *iarg = impl->func->args->args[j];
734
735 if (!strcmp(let->val->data.func->var->name, iarg->var->name)) {
736 let->val->data.func->arg = iarg;
737 check = 1;
738 break;
739 }
740 }
741 }
742 if (!check) {
743 data->error(PSI_WARNING, "Unknown value '$%s' of `let` statement"
744 " for variable '%s' of implementation '%s'",
745 let->val->data.func->var->name, let->var->name, impl->func->name);
746 return 0;
747 }
748 break;
749 }
750 }
751
752 /* check that we have a let stmt for every decl arg */
753 if (impl->decl->args) for (i = 0; i < impl->decl->args->count; ++i) {
754 decl_arg *darg = impl->decl->args->args[i];
755 int check = 0;
756
757 for (j = 0; j < impl->stmts->let.count; ++j) {
758 let_stmt *let = impl->stmts->let.list[j];
759
760 if (!strcmp(let->var->name, darg->var->name)) {
761 darg->let = let;
762 check = 1;
763 break;
764 }
765 }
766 if (!check) {
767 data->error(PSI_WARNING, "Missing `let` statement for arg '%s %.*s%s'"
768 " of declaration '%s' for implementation '%s'",
769 darg->type->name, (int) darg->var->pointer_level, "*****",
770 darg->var->name, impl->decl->func->var->name, impl->func->name);
771 return 0;
772 }
773 }
774
775 return 1;
776 }
777 static inline int validate_impl_set_stmts(PSI_Data *data, impl *impl) {
778 size_t i, j, k;
779 /* we can have any count of set stmts; processing out vars */
780 /* check that set stmts reference known variables */
781 for (i = 0; i < impl->stmts->set.count; ++i) {
782 set_stmt *set = impl->stmts->set.list[i];
783 int check = 0;
784
785 if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
786 impl_arg *iarg = impl->func->args->args[j];
787
788 if (!strcmp(set->var->name, iarg->var->name)) {
789 set->arg = iarg;
790 check = 1;
791 break;
792 }
793 }
794 if (!check) {
795 data->error(PSI_WARNING, "Unknown variable '$%s' of `set` statement"
796 " of implementation '%s'",
797 set->var->name, impl->func->name);
798 return 0;
799 }
800
801 for (j = 0; j < set->val->vars->count; ++j) {
802 decl_var *set_var = set->val->vars->vars[j];
803
804 check = 0;
805 if (impl->decl->args) {
806 for (k = 0; k < impl->decl->args->count; ++k) {
807 decl_arg *set_arg = impl->decl->args->args[k];
808
809 if (!strcmp(set_var->name, set_arg->var->name)) {
810 check = 1;
811 set_var->arg = set_arg;
812 if (!validate_set_value(data, set->val, 1, &set_arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
813 return 0;
814 }
815 break;
816 }
817 }
818 }
819 if (!check) {
820 for (k = 0; k < impl->stmts->let.count; ++k) {
821 let_stmt *let = impl->stmts->let.list[k];
822
823 /* check temp vars */
824 if (let->val && let->val->kind == PSI_LET_TMP) {
825 if (!strcmp(set_var->name, let->var->name)) {
826 check = 1;
827 set_var->arg = let->var->arg;
828 if (!validate_set_value(data, set->val, 1, &set_var->arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
829 return 0;
830 }
831 break;
832 }
833 }
834 }
835 }
836
837 if (!check) {
838 data->error(PSI_WARNING, "Unknown value '%s' of `set` statement"
839 " for variable '$%s' of implementation '%s'",
840 set_var->name, set->arg->var->name, impl->func->name);
841 return 0;
842 }
843 }
844 }
845 return 1;
846 }
847 static inline decl *locate_free_decl(decls *decls, free_call *f) {
848 if (decls) {
849 size_t i;
850
851 for (i = 0; i < decls->count; ++i) {
852 if (!strcmp(decls->list[i]->func->var->name, f->func)) {
853 f->decl = decls->list[i];
854 return decls->list[i];
855 }
856 }
857 }
858
859 return NULL;
860 }
861 static inline int validate_impl_free_stmts(PSI_Data *data, impl *impl) {
862 size_t i, j, k, l;
863 /* we can have any count of free stmts; freeing any out vars */
864 for (i = 0; i < impl->stmts->fre.count; ++i) {
865 free_stmt *fre = impl->stmts->fre.list[i];
866
867 for (j = 0; j < fre->calls->count; ++j) {
868 free_call *free_call = fre->calls->list[j];
869
870 /* first find the decl of the free func */
871 if (!locate_free_decl(data->decls, free_call)) {
872 data->error(PSI_WARNING, "Unknown function '%s' in `free` statement"
873 " of implementation '%s'", free_call->func, impl->func->name);
874 return 0;
875 }
876 if (!impl->decl->args) {
877 data->error(PSI_WARNING, "Declaration '%s' of implementation '%s'"
878 " does not have any arguments to free",
879 impl->decl->func->var->name, impl->func->name);
880 }
881
882 /* now check for known vars */
883 for (l = 0; l < free_call->vars->count; ++l) {
884 int check = 0;
885 decl_var *free_var = free_call->vars->vars[l];
886
887 for (k = 0; k < impl->decl->args->count; ++k) {
888 decl_arg *free_arg = impl->decl->args->args[k];
889
890 if (!strcmp(free_var->name, free_arg->var->name)) {
891 check = 1;
892 free_var->arg = free_arg;
893 break;
894 }
895 }
896
897 if (!check) {
898 data->error(PSI_WARNING, "Unknown variable '%s' of `free` statement"
899 " of implementation '%s'",
900 free_var->name, impl->func->name);
901 return 0;
902 }
903 }
904 }
905 }
906 return 1;
907 }
908 static inline int validate_impl_stmts(PSI_Data *data, impl *impl) {
909 if (!impl->stmts) {
910 data->error(PSI_WARNING, "Missing body for implementation %s!",
911 impl->func->name);
912 return 0;
913 }
914
915 if (!validate_impl_ret_stmt(data, impl)) {
916 return 0;
917 }
918
919 if (!validate_impl_let_stmts(data, impl)) {
920 return 0;
921 }
922 if (!validate_impl_set_stmts(data, impl)) {
923 return 0;
924 }
925 if (!validate_impl_free_stmts(data, impl)) {
926 return 0;
927 }
928
929 return 1;
930 }
931
932 PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
933 {
934 size_t i;
935 PSI_Data T;
936 struct psi_predef_type *predef_type;
937 struct psi_predef_const *predef_const;
938 struct psi_predef_struct *predef_struct;
939 struct psi_predef_decl *predef_decl;
940
941 if (!C) {
942 C = malloc(sizeof(*C));
943 }
944 memset(C, 0, sizeof(*C));
945
946 C->error = error;
947 C->ops = ops;
948
949 if (ops->init) {
950 ops->init(C);
951 }
952
953 ZEND_ASSERT(ops->call != NULL);
954 ZEND_ASSERT(ops->compile != NULL);
955
956 /* build up predefs in a temporary PSI_Data for validation */
957 memset(&T, 0, sizeof(T));
958 T.error = error;
959
960 for (predef_type = &psi_predef_types[0]; predef_type->type_tag; ++predef_type) {
961 decl_type *type = init_decl_type(predef_type->type_tag, predef_type->type_name);
962 decl_typedef *def = init_decl_typedef(predef_type->alias, type);
963
964 T.defs = add_decl_typedef(T.defs, def);
965 }
966 for (predef_const = &psi_predef_consts[0]; predef_const->type_tag; ++predef_const) {
967 impl_def_val *val = init_impl_def_val(predef_const->val_type_tag, predef_const->val_text);
968 const_type *type = init_const_type(predef_const->type_tag, predef_const->type_name);
969 constant *constant = init_constant(type, predef_const->var_name, val);
970
971 T.consts = add_constant(T.consts, constant);
972 }
973 for (predef_struct = &psi_predef_structs[0]; predef_struct->type_tag; ++predef_struct) {
974 struct psi_predef_struct *member;
975 decl_args *dargs = init_decl_args(NULL);
976 decl_struct *dstruct = init_decl_struct(predef_struct->var_name, dargs);
977
978 dstruct->size = predef_struct->size;
979 for (member = &predef_struct[1]; member->type_tag; ++member) {
980 decl_type *type;
981 decl_var *dvar;
982 decl_arg *darg;
983
984 type = init_decl_type(member->type_tag, member->type_name);
985 dvar = init_decl_var(member->var_name, member->pointer_level, member->array_size);
986 darg = init_decl_arg(type, dvar);
987 darg->layout = init_decl_struct_layout(member->offset, member->size);
988 dargs = add_decl_arg(dargs, darg);
989 }
990
991 T.structs = add_decl_struct(T.structs, dstruct);
992 predef_struct = member;
993 }
994 for (predef_decl = &psi_predef_decls[0]; predef_decl->type_tag; ++predef_decl) {
995 struct psi_predef_decl *farg;
996 decl_type *ftype = init_decl_type(predef_decl->type_tag, predef_decl->type_name);
997 decl_var *fname = init_decl_var(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
998 decl_arg *func = init_decl_arg(ftype, fname);
999 decl_args *args = init_decl_args(NULL);
1000 decl *decl = init_decl(init_decl_abi("default"), func, args);
1001
1002 for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
1003 decl_type *arg_type = init_decl_type(farg->type_tag, farg->type_name);
1004 decl_var *arg_var = init_decl_var(farg->var_name, farg->pointer_level, farg->array_size);
1005 decl_arg *darg = init_decl_arg(arg_type, arg_var);
1006 args = add_decl_arg(args, darg);
1007 }
1008
1009 T.decls = add_decl(T.decls, decl);
1010 predef_decl = farg;
1011 }
1012
1013 for (predef_decl = &psi_predef_vararg_decls[0]; predef_decl->type_tag; ++predef_decl) {
1014 struct psi_predef_decl *farg;
1015 decl_type *ftype = init_decl_type(predef_decl->type_tag, predef_decl->type_name);
1016 decl_var *fname = init_decl_var(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
1017 decl_arg *func = init_decl_arg(ftype, fname);
1018 decl_args *args = init_decl_args(NULL);
1019 decl *decl = init_decl(init_decl_abi("default"), func, args);
1020
1021 for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
1022 decl_type *arg_type = init_decl_type(farg->type_tag, farg->type_name);
1023 decl_var *arg_var = init_decl_var(farg->var_name, farg->pointer_level, farg->array_size);
1024 decl_arg *darg = init_decl_arg(arg_type, arg_var);
1025 args = add_decl_arg(args, darg);
1026 }
1027 args->varargs = 1;
1028
1029 T.decls = add_decl(T.decls, decl);
1030 predef_decl = farg;
1031 }
1032
1033 for (i = 0; i < T.defs->count; ++i) {
1034 decl_typedef *def = T.defs->list[i];
1035
1036 if (validate_decl_typedef(&T, def)) {
1037 C->defs = add_decl_typedef(C->defs, def);
1038 }
1039 }
1040
1041 for (i = 0; i < T.consts->count; ++i) {
1042 constant *constant = T.consts->list[i];
1043
1044 if (validate_constant(&T, constant)) {
1045 C->consts = add_constant(C->consts, constant);
1046 }
1047 }
1048
1049 for (i = 0; i < T.structs->count; ++i) {
1050 decl_struct *dstruct = T.structs->list[i];
1051
1052 if (validate_decl_struct(&T, dstruct)) {
1053 C->structs = add_decl_struct(C->structs, dstruct);
1054 }
1055 }
1056
1057 for (i = 0; i < T.decls->count; ++i) {
1058 decl *decl = T.decls->list[i];
1059
1060 if (validate_decl(&T, NULL, decl)) {
1061 C->decls = add_decl(C->decls, decl);
1062 }
1063 }
1064
1065 C->count = 1;
1066 C->data = malloc(sizeof(*C->data));
1067 PSI_DataExchange(C->data, &T);
1068
1069 return C;
1070 }
1071
1072 int PSI_ContextValidate(PSI_Context *C, PSI_Parser *P)
1073 {
1074 PSI_Data *D;
1075 void *dlopened = NULL;
1076 size_t count = C->count++;
1077
1078 C->data = realloc(C->data, C->count * sizeof(*C->data));
1079 D = PSI_DataExchange(&C->data[count], PSI_DATA(P));
1080
1081 if (D->defs) {
1082 size_t i;
1083
1084 for (i = 0; i < D->defs->count; ++i) {
1085 if (validate_decl_typedef(PSI_DATA(C), D->defs->list[i])) {
1086 C->defs = add_decl_typedef(C->defs, D->defs->list[i]);
1087 }
1088 }
1089 }
1090 if (D->structs) {
1091 size_t i;
1092
1093 for (i = 0; i < D->structs->count; ++i) {
1094 if (validate_decl_struct(PSI_DATA(C), D->structs->list[i])) {
1095 C->structs = add_decl_struct(C->structs, D->structs->list[i]);
1096 }
1097 }
1098 }
1099 if (D->consts) {
1100 size_t i;
1101
1102 for (i = 0; i < D->consts->count; ++i) {
1103 if (validate_constant(PSI_DATA(C), D->consts->list[i])) {
1104 C->consts = add_constant(C->consts, D->consts->list[i]);
1105 }
1106 }
1107 }
1108
1109 if (!validate_lib(D, &dlopened)) {
1110 return 0;
1111 }
1112
1113 add_decl_lib(&C->psi.libs, dlopened);
1114
1115 if (D->decls) {
1116 size_t i;
1117
1118 for (i = 0; i < D->decls->count; ++i) {
1119 if (validate_decl(PSI_DATA(C), dlopened, D->decls->list[i])) {
1120 C->decls = add_decl(C->decls, D->decls->list[i]);
1121 }
1122 }
1123 }
1124 if (D->impls) {
1125 size_t i;
1126
1127 for (i = 0; i < D->impls->count; ++i) {
1128 if (validate_impl_stmts(PSI_DATA(C), D->impls->list[i])) {
1129 C->impls = add_impl(C->impls, D->impls->list[i]);
1130 }
1131 }
1132 }
1133
1134 return 1;
1135 }
1136
1137 static int psi_select_dirent(const struct dirent *entry)
1138 {
1139 #ifndef FNM_CASEFOLD
1140 #define FNM_CASEFOLD 0
1141 #endif
1142 return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
1143 }
1144
1145 void PSI_ContextBuild(PSI_Context *C, const char *paths)
1146 {
1147 int i, n, flags = psi_check_env("PSI_DEBUG") ? PSI_PARSER_DEBUG : 0;
1148 char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
1149 struct dirent **entries = NULL;
1150
1151
1152 do {
1153 sep = strchr(ptr, ':');
1154
1155 if (sep) {
1156 *sep = 0;
1157 }
1158
1159 n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
1160
1161 if (n > 0) {
1162 for (i = 0; i < n; ++i) {
1163 char psi[MAXPATHLEN];
1164 PSI_Parser P;
1165
1166 if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", ptr, entries[i]->d_name)) {
1167 C->error(PSI_WARNING, "Path to PSI file too long: %s/%s",
1168 ptr, entries[i]->d_name);
1169 }
1170 if (!PSI_ParserInit(&P, psi, C->error, flags)) {
1171 C->error(PSI_WARNING, "Failed to init PSI parser (%s): %s",
1172 psi, strerror(errno));
1173 continue;
1174 }
1175
1176 while (0 < PSI_ParserScan(&P)) {
1177 PSI_ParserParse(&P, PSI_TokenAlloc(&P));
1178 if (P.num == PSI_T_EOF) {
1179 break;
1180 }
1181 }
1182
1183 PSI_ParserParse(&P, NULL);
1184 PSI_ContextValidate(C, &P);
1185 PSI_ParserDtor(&P);
1186 }
1187 }
1188
1189 if (entries) {
1190 for (i = 0; i < n; ++i) {
1191 free(entries[i]);
1192 }
1193 free(entries);
1194 }
1195
1196 ptr = sep + 1;
1197 } while (sep);
1198
1199
1200 if (PSI_ContextCompile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
1201 C->error(PSI_WARNING, "Failed to register functions!");
1202 }
1203
1204 free(cpy);
1205
1206 }
1207
1208 zend_function_entry *PSI_ContextCompile(PSI_Context *C)
1209 {
1210 size_t i;
1211
1212 if (C->consts) {
1213 zend_constant zc;
1214
1215 zc.flags = CONST_PERSISTENT|CONST_CS;
1216 zc.module_number = EG(current_module)->module_number;
1217
1218 for (i = 0; i < C->consts->count; ++i) {
1219 constant *c = C->consts->list[i];
1220
1221 zc.name = zend_string_init(c->name + (c->name[0] == '\\'), strlen(c->name) - (c->name[0] == '\\'), 1);
1222 ZVAL_NEW_STR(&zc.value, zend_string_init(c->val->text, strlen(c->val->text), 1));
1223
1224 switch (c->type->type) {
1225 case PSI_T_BOOL:
1226 convert_to_boolean(&zc.value);
1227 break;
1228 case PSI_T_INT:
1229 convert_to_long(&zc.value);
1230 break;
1231 case PSI_T_FLOAT:
1232 convert_to_double(&zc.value);
1233 break;
1234 }
1235 zend_register_constant(&zc);
1236 }
1237 }
1238
1239 return C->closures = C->ops->compile(C);
1240 }
1241
1242
1243 void PSI_ContextCall(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va)
1244 {
1245 C->ops->call(C, decl_call, va);
1246 }
1247
1248 static inline void dump_decl_type(int fd, decl_type *t) {
1249 const char *pre;
1250
1251 switch (t->type) {
1252 case PSI_T_STRUCT:
1253 pre = "struct ";
1254 break;
1255 default:
1256 pre = "";
1257 }
1258 dprintf(fd, "%s%s", pre, t->name);
1259 }
1260 static inline void dump_decl_var(int fd, decl_var *v) {
1261 dprintf(fd, "%.*s%s", v->pointer_level-!!v->array_size, "**********", v->name);
1262 if (v->array_size) {
1263 dprintf(fd, "[%u]", v->array_size);
1264 }
1265 }
1266 static inline void dump_decl_arg(int fd, decl_arg *a) {
1267 dump_decl_type(fd, a->type);
1268 dprintf(fd, " ");
1269 dump_decl_var(fd, a->var);
1270 }
1271 static inline void dump_level(int fd, unsigned level) {
1272 dprintf(fd, "%.*s", level, "\t\t\t\t\t\t\t\t\t");
1273 }
1274 static inline void dump_num_exp(int fd, num_exp *exp) {
1275 while (exp) {
1276 switch (exp->t) {
1277 case PSI_T_NUMBER:
1278 dprintf(fd, "%s", exp->u.numb);
1279 break;
1280 case PSI_T_NSNAME:
1281 dprintf(fd, "%s", exp->u.cnst->name);
1282 break;
1283 case PSI_T_NAME:
1284 dump_decl_var(fd, exp->u.dvar);
1285 break;
1286 EMPTY_SWITCH_DEFAULT_CASE();
1287 }
1288 if (exp->operand) {
1289 char op;
1290
1291 switch (exp->operator) {
1292 case PSI_T_PLUS: op = '+'; break;
1293 case PSI_T_MINUS: op = '-'; break;
1294 case PSI_T_ASTERISK:op = '*'; break;
1295 case PSI_T_SLASH: op = '/'; break;
1296 EMPTY_SWITCH_DEFAULT_CASE();
1297 }
1298 dprintf(fd, " %c ", op);
1299 }
1300 exp = exp->operand;
1301 }
1302 }
1303 static inline void dump_impl_set_value(int fd, set_value *set, unsigned level) {
1304 size_t i;
1305
1306 if (level > 1) {
1307 /* only if not directly after `set ...` */
1308 dump_level(fd, level);
1309 }
1310 dprintf(fd, "%s(", set->func->name);
1311
1312 for (i = 0; i < set->vars->count; ++i) {
1313 decl_var *svar = set->vars->vars[i];
1314 if (i) {
1315 dprintf(fd, ", ");
1316 }
1317 dump_decl_var(fd, svar);
1318 }
1319 if (set->num) {
1320 dprintf(fd, ", ");
1321 dump_num_exp(fd, set->num);
1322 }
1323 if (set->inner) {
1324 dprintf(fd, ",\n");
1325 for (i = 0; i < set->count; ++i) {
1326 dump_impl_set_value(fd, set->inner[i], level+1);
1327 }
1328 /* only if inner stmts, i.e. with new lines, were dumped */
1329 dump_level(fd, level);
1330 }
1331 if (level > 1) {
1332 dprintf(fd, "),\n");
1333 } else {
1334 dprintf(fd, ");\n");
1335 }
1336 }
1337 void PSI_ContextDump(PSI_Context *C, int fd)
1338 {
1339 size_t i, j, k, l;
1340
1341 #ifdef HAVE_LIBJIT
1342 if (C->ops == PSI_Libjit()) {
1343 dprintf(fd, "// psi.engine=jit\n");
1344 }
1345 #endif
1346 #ifdef HAVE_LIBFFI
1347 if (C->ops == PSI_Libffi()) {
1348 dprintf(fd, "// psi.engine=ffi\n");
1349 }
1350 #endif
1351 dprintf(fd, "\n");
1352
1353 if (C->defs) {
1354 for (i = 0; i < C->defs->count; ++i) {
1355 decl_typedef *tdef = C->defs->list[i];
1356
1357 dprintf(fd, "typedef ");
1358 dump_decl_type(fd, tdef->type);
1359 dprintf(fd, " %s;\n", tdef->alias);
1360 }
1361 dprintf(fd, "\n");
1362 }
1363
1364 if (C->structs) {
1365 for (i = 0; i < C->structs->count; ++i) {
1366 decl_struct *strct = C->structs->list[i];
1367
1368 dprintf(fd, "struct %s::(%zu) {\n", strct->name, strct->size);
1369 if (strct->args) for (j = 0; j < strct->args->count; ++j) {
1370 decl_arg *sarg = strct->args->args[j];
1371
1372 dprintf(fd, "\t");
1373 dump_decl_arg(fd, sarg);
1374 dprintf(fd, "::(%zu, %zu);\n", sarg->layout->pos, sarg->layout->len);
1375 }
1376 dprintf(fd, "}\n");
1377 }
1378 dprintf(fd, "\n");
1379 }
1380 if (C->consts) {
1381 for (i = 0; i < C->consts->count; ++i) {
1382 constant *cnst = C->consts->list[i];
1383
1384 dprintf(fd, "const %s %s = ", cnst->type->name, cnst->name);
1385 if (cnst->val->type == PSI_T_QUOTED_STRING) {
1386 dprintf(fd, "\"%s\";\n", cnst->val->text);
1387 } else {
1388 dprintf(fd, "%s;\n", cnst->val->text);
1389 }
1390 }
1391 dprintf(fd, "\n");
1392 }
1393 if (C->decls) {
1394 for (i = 0; i < C->decls->count; ++i) {
1395 decl *decl = C->decls->list[i];
1396
1397 dprintf(fd, "%s ", decl->abi->convention);
1398 dump_decl_arg(fd, decl->func);
1399 dprintf(fd, "(");
1400 if (decl->args) {
1401 for (j = 0; j < decl->args->count; ++j) {
1402 if (j) {
1403 dprintf(fd, ", ");
1404 }
1405 dump_decl_arg(fd, decl->args->args[j]);
1406 }
1407 if (decl->args->varargs) {
1408 dprintf(fd, ", ...");
1409 }
1410 }
1411 dprintf(fd, ");\n");
1412 }
1413 dprintf(fd, "\n");
1414 }
1415 if (C->impls) {
1416 for (i = 0; i < C->impls->count; ++i) {
1417 impl *impl = C->impls->list[i];
1418
1419 dprintf(fd, "function %s(", impl->func->name);
1420 if (impl->func->args) {
1421 for (j = 0; j < impl->func->args->count; ++j) {
1422 impl_arg *iarg = impl->func->args->args[j];
1423
1424 dprintf(fd, "%s%s %s$%s",
1425 j ? ", " : "",
1426 iarg->type->name,
1427 iarg->var->reference ? "&" : "",
1428 iarg->var->name);
1429 if (iarg->def) {
1430 dprintf(fd, " = %s", iarg->def->text);
1431 }
1432 }
1433 if (impl->func->args->vararg.name) {
1434 impl_arg *vararg = impl->func->args->vararg.name;
1435
1436 dprintf(fd, ", %s %s...$%s",
1437 vararg->type->name,
1438 vararg->var->reference ? "&" : "",
1439 vararg->var->name);
1440 }
1441 }
1442 dprintf(fd, ") : %s%s {\n",
1443 impl->func->return_reference ? "&":"",
1444 impl->func->return_type->name);
1445 if (impl->stmts) {
1446 for (j = 0; j < impl->stmts->let.count; ++j) {
1447 let_stmt *let = impl->stmts->let.list[j];
1448
1449 dprintf(fd, "\tlet %s", let->var->name);
1450 if (let->val) {
1451 dprintf(fd, " = %s", let->val->flags.one.is_reference ? "&" : "");
1452 switch (let->val->kind) {
1453 case PSI_LET_NULL:
1454 dprintf(fd, "NULL");
1455 break;
1456 case PSI_LET_TMP:
1457 dump_decl_var(fd, let->val->data.var);
1458 break;
1459 case PSI_LET_CALLOC:
1460 dprintf(fd, "calloc(");
1461 dump_num_exp(fd, let->val->data.alloc->nmemb);
1462 dprintf(fd, ", ");
1463 dump_num_exp(fd, let->val->data.alloc->size);
1464 dprintf(fd, ")");
1465 break;
1466 case PSI_LET_FUNC:
1467 dprintf(fd, "%s($%s)", let->val->data.func->name,
1468 let->val->data.func->var->name);
1469 break;
1470
1471 EMPTY_SWITCH_DEFAULT_CASE();
1472 }
1473 dprintf(fd, ";\n");
1474 }
1475 }
1476 for (j = 0; j < impl->stmts->ret.count; ++j) {
1477 return_stmt *ret = impl->stmts->ret.list[j];
1478
1479 dprintf(fd, "\treturn ");
1480 dump_impl_set_value(fd, ret->set, 1);
1481 }
1482 for (j = 0; j < impl->stmts->set.count; ++j) {
1483 set_stmt *set = impl->stmts->set.list[j];
1484
1485 dprintf(fd, "\tset $%s = ", set->var->name);
1486 dump_impl_set_value(fd, set->val, 1);
1487 }
1488 for (j = 0; j < impl->stmts->fre.count; ++j) {
1489 free_stmt *fre = impl->stmts->fre.list[j];
1490
1491 dprintf(fd, "\tfree ");
1492 for (k = 0; k < fre->calls->count; ++k) {
1493 free_call *call = fre->calls->list[k];
1494
1495 if (k) {
1496 dprintf(fd, ", ");
1497 }
1498 dprintf(fd, "%s(", call->func);
1499 for (l = 0; l < call->vars->count; ++l) {
1500 decl_var *fvar = call->vars->vars[l];
1501
1502 dump_decl_var(fd, fvar);
1503 }
1504 dprintf(fd, ");\n");
1505 }
1506 }
1507 }
1508 dprintf(fd, "}\n");
1509 }
1510 dprintf(fd, "\n");
1511 }
1512 }
1513
1514 void PSI_ContextDtor(PSI_Context *C)
1515 {
1516 size_t i;
1517 zend_function_entry *zfe;
1518
1519 if (C->ops->dtor) {
1520 C->ops->dtor(C);
1521 }
1522
1523 free_decl_libs(&C->psi.libs);
1524
1525 if (C->data) {
1526 for (i = 0; i < C->count; ++i) {
1527 PSI_DataDtor(&C->data[i]);
1528 }
1529 free(C->data);
1530 }
1531
1532 if (C->closures) {
1533 for (zfe = C->closures; zfe->fname; ++zfe) {
1534 free((void *) zfe->arg_info);
1535 }
1536 free(C->closures);
1537 }
1538
1539 if (C->consts) {
1540 if (C->consts->list) {
1541 free(C->consts->list);
1542 }
1543 free(C->consts);
1544 }
1545 if (C->defs) {
1546 if (C->defs->list) {
1547 free(C->defs->list);
1548 }
1549 free(C->defs);
1550 }
1551 if (C->structs) {
1552 if (C->structs->list) {
1553 free(C->structs->list);
1554 }
1555 free(C->structs);
1556 }
1557 if (C->decls) {
1558 if (C->decls->list) {
1559 free(C->decls->list);
1560 }
1561 free(C->decls);
1562 }
1563 if (C->impls) {
1564 if (C->impls->list) {
1565 free(C->impls->list);
1566 }
1567 free(C->impls);
1568 }
1569
1570 memset(C, 0, sizeof(*C));
1571 }
1572
1573 void PSI_ContextFree(PSI_Context **C)
1574 {
1575 if (*C) {
1576 PSI_ContextDtor(*C);
1577 free(*C);
1578 *C = NULL;
1579 }
1580 }
PHP System Interface / POSIX Standard Interface