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f580f7f424bb70a8fd3d9fcd0a9ee9900539a55c
[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_WCHAR_H
81 # include <wchar.h>
82 #endif
83
84 #ifdef HAVE_DIRENT_H
85 # include <dirent.h>
86 # define NAMLEN(dirent) strlen ((dirent)->d_name)
87 #else
88 # define dirent direct
89 # define NAMLEN(dirent) ((dirent)->d_namlen)
90 # ifdef HAVE_SYS_NDIR_H
91 # include <sys/ndir.h>
92 # endif
93 # ifdef HAVE_SYS_DIR_H
94 # include <sys/dir.h>
95 # endif
96 # ifdef HAVE_NDIR_H
97 # include <ndir.h>
98 # endif
99 #endif
100
101 #include <sys/param.h>
102 #include <dlfcn.h>
103 #include <fnmatch.h>
104
105 #include "php.h"
106 #include "php_scandir.h"
107 #include "php_psi.h"
108
109 #include "libjit.h"
110 #include "libffi.h"
111
112 static struct psi_std_type {
113 token_t type_tag;
114 const char *type_name;
115 } psi_std_types[] = {
116 {PSI_T_FLOAT, "float"},
117 {PSI_T_DOUBLE, "double"},
118 {PSI_T_INT8, "int8_t"},
119 {PSI_T_INT16, "int16_t"},
120 {PSI_T_INT32, "int32_t"},
121 {PSI_T_INT64, "int64_t"},
122 {PSI_T_UINT8, "uint8_t"},
123 {PSI_T_UINT16, "uint16_t"},
124 {PSI_T_UINT32, "uint32_t"},
125 {PSI_T_UINT64, "uint64_t"},
126 {0}
127 };
128
129 static struct psi_predef_type {
130 token_t type_tag;
131 const char *type_name;
132 const char *alias;
133 } psi_predef_types[] = {
134 PSI_TYPES
135 {0}
136 };
137
138 static struct psi_predef_const {
139 token_t type_tag;
140 const char *type_name;
141 const char *var_name;
142 const char *val_text;
143 token_t val_type_tag;
144 } psi_predef_consts[] = {
145 PSI_CONSTS
146 {0}
147 };
148
149 PSI_MACROS
150
151 int psi_glob(const char *pattern, int flags,
152 int (*errfunc) (const char *epath, int eerrno),
153 glob_t *pglob) {
154 size_t offs = flags & GLOB_DOOFFS ? pglob->gl_offs : 0;
155 int rv = glob(pattern, flags, errfunc, pglob);
156 if (pglob->gl_pathv) {
157 while (offs--) {
158 pglob->gl_pathv[offs] = NULL;
159 }
160 }
161 return rv;
162 }
163
164 int psi_printf(const char *fmt, ...) {
165 int rs;
166 char *a1;
167 va_list ap1, ap2;
168
169 va_start(ap1, fmt);
170 va_copy(ap2, ap1);
171 a1 = va_arg(ap2, char *);
172 rs = vprintf(fmt, ap1);
173 va_end(ap1);
174 va_end(ap2);
175 return rs;
176 }
177
178 static struct psi_func_redir {
179 const char *name;
180 void (*func)(void);
181 } psi_func_redirs[] = {
182 {"glob", (void (*)(void)) psi_glob},
183 {"printf", (void (*)(void)) psi_printf},
184 PSI_REDIRS
185 {0}
186 };
187
188 static struct psi_predef_decl {
189 token_t type_tag;
190 const char *type_name;
191 const char *var_name;
192 size_t pointer_level;
193 size_t array_size;
194 } psi_predef_decls[] = {
195 PSI_DECLS
196 {0}
197 };
198
199 static struct psi_predef_struct {
200 token_t type_tag;
201 const char *type_name;
202 const char *var_name;
203 size_t offset;
204 size_t size;
205 size_t pointer_level;
206 size_t array_size;
207 } psi_predef_structs[] = {
208 PSI_STRUCTS
209 {0}
210 };
211
212 static int validate_lib(PSI_Data *data, void **dlopened) {
213 char lib[MAXPATHLEN];
214 const char *ptr = data->psi.file.ln;
215 size_t len;
216
217 if (!ptr) {
218 /* FIXME: assume stdlib */
219 return 1;
220 } else if (!strchr(ptr, '/')) {
221 len = snprintf(lib, MAXPATHLEN, "lib%s.%s", ptr, PHP_PSI_SHLIB_SUFFIX);
222 if (MAXPATHLEN == len) {
223 data->error(PSI_WARNING, "Library name too long: '%s'", ptr);
224 }
225 lib[len] = 0;
226 ptr = lib;
227 }
228 if (!(*dlopened = dlopen(ptr, RTLD_LAZY|RTLD_LOCAL))) {
229 data->error(PSI_WARNING, "Could not open library '%s': %s.",
230 data->psi.file.ln, dlerror());
231 return 0;
232 }
233 return 1;
234 }
235
236 static inline int locate_decl_type_alias(decl_typedefs *defs, decl_type *type) {
237 size_t i;
238 struct psi_std_type *stdtyp;
239
240 if (type->real) {
241 return 1;
242 }
243 for (i = 0; i < defs->count; ++i) {
244 decl_typedef *def = defs->list[i];
245
246 if (def->type->type != type->type && !strcmp(def->alias, type->name)) {
247 type->real = def->type;
248 return 1;
249 }
250 }
251 for (stdtyp = &psi_std_types[0]; stdtyp->type_tag; ++stdtyp) {
252 if (!strcmp(type->name, stdtyp->type_name)) {
253 type->type = stdtyp->type_tag;
254 return 1;
255 }
256 }
257
258 return 0;
259 }
260 static inline int locate_decl_type_struct(decl_structs *structs, decl_type *type) {
261 size_t i;
262
263 if (type->strct) {
264 return 1;
265 }
266 for (i = 0; i < structs->count; ++i) {
267 if (!strcmp(structs->list[i]->name, type->name)) {
268 type->strct = structs->list[i];
269 return 1;
270 }
271 }
272 return 0;
273 }
274
275 static inline int validate_decl_type(PSI_Data *data, decl_type *type) {
276 switch (type->type) {
277 case PSI_T_NAME:
278 if (!data->defs || !locate_decl_type_alias(data->defs, type)) {
279 return 0;
280 }
281 if (type->real) {
282 return validate_decl_type(data, type->real);
283 }
284 return 1;
285 case PSI_T_STRUCT:
286 if (!data->structs || !locate_decl_type_struct(data->structs, type)) {
287 return 0;
288 }
289 break;
290 }
291 return 1;
292 }
293 static inline int validate_decl_typedef(PSI_Data *data, decl_typedef *def) {
294 if (!validate_decl_type(data, def->type)) {
295 data->error(PSI_WARNING, "Type '%s' cannot be aliased to %s'%s'",
296 def->type->name, def->type->type == PSI_T_STRUCT?"struct ":"",def->alias);
297 return 0;
298 }
299 /* FIXME: check def->alias */
300 return 1;
301 }
302
303 static inline int validate_constant(PSI_Data *data, constant *c) {
304 /* FIXME */
305 return 1;
306 }
307
308 static inline int validate_decl_arg(PSI_Data *data, decl_arg *arg) {
309 if (!validate_decl_type(data, arg->type)) {
310 data->error(PSI_WARNING, "Cannot use '%s'(%d) as type for decl var '%s'"
311 " in %s on line %zu at col %zu",
312 arg->type->name, arg->type->type, arg->var->name,
313 arg->type->token->file, arg->type->token->line, arg->type->token->col);
314 return 0;
315 }
316 return 1;
317 }
318
319 static inline int validate_decl_struct(PSI_Data *data, decl_struct *s) {
320 size_t i;
321
322 for (i = 0; i < s->args->count; ++i) {
323 if (!validate_decl_arg(data, s->args->args[i])) {
324 return 0;
325 }
326 }
327
328 for (i = 0; i < s->args->count; ++i) {
329 decl_arg *darg = s->args->args[i];
330
331 if (!validate_decl_arg(data, darg)) {
332 return 0;
333 }
334
335 ZEND_ASSERT(!darg->var->arg || darg->var->arg == darg);
336 darg->var->arg = darg;
337
338 if (!darg->layout) {
339 token_t t;
340
341 if (darg->var->pointer_level && (!darg->var->array_size || darg->var->pointer_level == 1)) {
342 t = PSI_T_POINTER;
343 } else {
344 t = real_decl_type(darg->type)->type;
345 }
346
347 if (i) {
348 decl_arg *last = s->args->args[i-1];
349 darg->layout = init_decl_struct_layout(
350 psi_t_align(t, last->layout->pos + last->layout->len),
351 psi_t_size(t) * darg->var->array_size);
352 } else {
353 darg->layout = init_decl_struct_layout(0, psi_t_size(t));
354 }
355 }
356 if (s->size < darg->layout->pos + darg->layout->len) {
357 s->size = darg->layout->pos + darg->layout->len;
358 }
359 }
360 return 1;
361 }
362
363 static const char * const abi_ccs[] = {
364 "default", /* \ */
365 "extern", /* > - all the same */
366 "cdecl", /* / */
367 "stdcall",
368 "fastcall",
369 };
370 static inline int validate_decl_abi(PSI_Data *data, decl_abi *abi) {
371 size_t i;
372
373 for (i = 0; i < sizeof(abi_ccs)/sizeof(char*); ++i) {
374 if (strcasecmp(abi->convention, abi_ccs[i])) {
375 return 1;
376 }
377 }
378 data->error(PSI_WARNING, "Invalid calling convention: '%s'", abi->convention);
379 return 0;
380 }
381 static inline int validate_decl_func(PSI_Data *data, void *dl, decl *decl, decl_arg *func)
382 {
383 struct psi_func_redir *redir;
384
385 if (!strcmp(func->var->name, "dlsym")) {
386 data->error(PSI_WARNING, "Cannot dlsym dlsym (sic!)");
387 return 0;
388 }
389
390 if (!validate_decl_arg(data, func)) {
391 return 0;
392 }
393 for (redir = &psi_func_redirs[0]; redir->name; ++redir) {
394 if (!strcmp(func->var->name, redir->name)) {
395 decl->call.sym = redir->func;
396 }
397 }
398 if (!decl->call.sym) {
399 #ifndef RTLD_NEXT
400 # define RTLD_NEXT ((void *) -1l)
401 #endif
402 decl->call.sym = dlsym(dl ?: RTLD_NEXT, func->var->name);
403 if (!decl->call.sym) {
404 data->error(PSI_WARNING, "Failed to locate symbol '%s': %s",
405 func->var->name, dlerror());
406 }
407 }
408 return 1;
409 }
410
411 static inline int validate_decl(PSI_Data *data, void *dl, decl *decl) {
412 if (!validate_decl_abi(data, decl->abi)) {
413 return 0;
414 }
415 if (!validate_decl_func(data, dl, decl, decl->func)) {
416 return 0;
417 }
418 if (decl->args) {
419 size_t i;
420
421 for (i = 0; i < decl->args->count; ++i) {
422 if (!validate_decl_arg(data, decl->args->args[i])) {
423 return 0;
424 }
425 }
426 }
427 return 1;
428 }
429 static inline decl_arg *locate_decl_var_arg(decl_var *var, decl_args *args, decl_arg *func) {
430 size_t i;
431
432 for (i = 0; i < args->count; ++i) {
433 decl_arg *arg = args->args[i];
434
435 if (!strcmp(var->name, arg->var->name)) {
436 ZEND_ASSERT(!var->arg || var->arg == arg);
437 return var->arg = arg;
438 }
439 }
440 if (func && !strcmp(var->name, func->var->name)) {
441 return var->arg = func;
442 }
443
444 return NULL;
445 }
446 static inline decl_arg *locate_struct_member(decl_struct *s, decl_var *var) {
447 if (s->args) {
448 return locate_decl_var_arg(var, s->args, NULL);
449 }
450
451 return NULL;
452 }
453 static inline constant *locate_num_exp_constant(num_exp *exp, constants *consts) {
454 size_t i;
455
456 for (i = 0; i < consts->count; ++i) {
457 constant *cnst = consts->list[i];
458
459 if (!strcmp(cnst->name, exp->u.numb)) {
460 free(exp->u.numb);
461 return exp->u.cnst = cnst;
462 }
463 }
464
465 return NULL;
466 }
467 static inline int validate_num_exp(PSI_Data *data, decl_args *dargs, decl_arg *func, num_exp *exp) {
468 if (exp->operand) {
469 switch (exp->operator) {
470 case PSI_T_PLUS:
471 exp->calculator = psi_calc_add;
472 break;
473 case PSI_T_MINUS:
474 exp->calculator = psi_calc_sub;
475 break;
476 case PSI_T_ASTERISK:
477 exp->calculator = psi_calc_mul;
478 break;
479 case PSI_T_SLASH:
480 exp->calculator = psi_calc_div;
481 break;
482 EMPTY_SWITCH_DEFAULT_CASE();
483 }
484 if (!validate_num_exp(data, dargs, func, exp->operand)) {
485 return 0;
486 }
487 }
488 switch (exp->t) {
489 case PSI_T_NAME:
490 if (!locate_decl_var_arg(exp->u.dvar, dargs, func)) {
491 data->error(PSI_WARNING, "Unknown variable '%s' in numeric expression",
492 exp->u.dvar->name);
493 return 0;
494 }
495 return 1;
496 case PSI_T_NSNAME:
497 if (!locate_num_exp_constant(exp, data->consts)) {
498 data->error(PSI_WARNING, "Unknown constant '%s' in numeric expression",
499 exp->u.numb);
500 return 0;
501 }
502 return 1;
503 case PSI_T_NUMBER:
504 return 1;
505 default:
506 return 0;
507 }
508 }
509 static inline int validate_set_value_handler(set_value *set) {
510 switch (set->func->type) {
511 case PSI_T_TO_BOOL:
512 set->func->handler = psi_to_bool;
513 break;
514 case PSI_T_TO_INT:
515 set->func->handler = psi_to_int;
516 break;
517 case PSI_T_TO_FLOAT:
518 set->func->handler = psi_to_double;
519 break;
520 case PSI_T_TO_STRING:
521 set->func->handler = psi_to_string;
522 break;
523 case PSI_T_TO_ARRAY:
524 set->func->handler = psi_to_array;
525 break;
526 case PSI_T_TO_OBJECT:
527 set->func->handler = psi_to_object;
528 break;
529 case PSI_T_VOID:
530 set->func->handler = psi_to_void;
531 break;
532 default:
533 return 0;
534 }
535 return 1;
536 }
537 static inline void decl_var_arg_v(decl_args *args, va_list argp) {
538 int argc;
539 decl_arg **argv;
540
541 memset(args, 0, sizeof(*args));
542
543 while ((argc = va_arg(argp, int))) {
544 argv = va_arg(argp, decl_arg **);
545 while (argc--) {
546 add_decl_arg(args, *argv++);
547 }
548 }
549 }
550 static inline int validate_set_value_ex(PSI_Data *data, set_value *set, decl_arg *ref, decl_args *ref_list) {
551 size_t i;
552 decl_type *ref_type;
553 decl_var *set_var = set->vars->vars[0];
554
555 if (!validate_set_value_handler(set)) {
556 data->error(PSI_WARNING, "Invalid cast '%s'", set->func->name);
557 return 0;
558 }
559
560 for (i = 0; i < set->vars->count; ++i) {
561 decl_var *svar = set->vars->vars[i];
562 if (!svar->arg && !locate_decl_var_arg(svar, ref_list, NULL)) {
563 data->error(PSI_WARNING, "Unknown variable '%s'", svar->name);
564 return 0;
565 }
566 }
567
568 if (!ref) {
569 ref = set_var->arg;
570 }
571 ref_type = real_decl_type(ref->type);
572
573 if (set->count) {
574 int is_to_array = (set->func->type == PSI_T_TO_ARRAY);
575 int is_pointer_to_struct = (ref_type->type == PSI_T_STRUCT && ref->var->pointer_level);
576
577 if (!is_to_array && !is_pointer_to_struct) {
578 data->error(E_WARNING, "Inner `set` statement casts only work with "
579 "to_array() casts on structs or pointers: %s(%s...", set->func->name, set->vars->vars[0]->name);
580 return 0;
581 }
582 }
583 if (set->num) {
584 if (!validate_num_exp(data, ref_list, ref, set->num)) {
585 return 0;
586 }
587 }
588
589 if (ref_type->type == PSI_T_STRUCT) {
590 /* to_array(struct, to_...) */
591 for (i = 0; i < set->count; ++i) {
592 decl_var *sub_var = set->inner[i]->vars->vars[0];
593 decl_arg *sub_ref = locate_struct_member(ref_type->strct, sub_var);
594
595 set->inner[i]->outer.set = set;
596 if (sub_ref) {
597 if (!validate_set_value_ex(data, set->inner[i], sub_ref, ref_type->strct->args)) {
598 return 0;
599 }
600 }
601 }
602 } else if (set->count == 1) {
603 /* to_array(ptr, to_string(*ptr)) */
604 decl_var *sub_var = set->inner[0]->vars->vars[0];
605 decl_arg *sub_ref = locate_decl_var_arg(sub_var, ref_list, ref);
606
607 set->inner[0]->outer.set = set;
608 if (sub_ref) {
609 if (strcmp(sub_var->name, set_var->name)) {
610 data->error(E_WARNING, "Inner `set` statement casts on pointers must reference the same variable");
611 return 0;
612 }
613 if (!validate_set_value_ex(data, set->inner[0], sub_ref, ref_list)) {
614 return 0;
615 }
616 }
617 } else if (set->count > 1) {
618 data->error(E_WARNING, "Inner `set` statement casts on pointers may only occur once");
619 return 0;
620 }
621
622 return 1;
623 }
624 static inline int validate_set_value(PSI_Data *data, set_value *set, ...) {
625 va_list argp;
626 decl_args args = {0};
627 int check;
628
629 va_start(argp, set);
630 decl_var_arg_v(&args, argp);
631 va_end(argp);
632
633 check = validate_set_value_ex(data, set, NULL, &args);
634 if (args.args) {
635 free(args.args);
636 }
637 return check;
638 }
639 static inline decl *locate_impl_decl(decls *decls, return_stmt *ret) {
640 if (decls) {
641 size_t i;
642
643 for (i = 0; i < decls->count; ++i) {
644 if (!strcmp(decls->list[i]->func->var->name, ret->set->vars->vars[0]->name)) {
645 ret->decl = decls->list[i]->func;
646 return decls->list[i];
647 }
648 }
649 }
650
651 return NULL;
652 }
653 static inline int validate_impl_ret_stmt(PSI_Data *data, impl *impl) {
654 return_stmt *ret;
655
656 /* we must have exactly one ret stmt delcaring the native func to call */
657 /* and which type cast to apply */
658 if (impl->stmts->ret.count != 1) {
659 if (impl->stmts->ret.count > 1) {
660 data->error(PSI_WARNING, "Too many `return` statements for implmentation %s;"
661 " found %zu, exactly one is needed",
662 impl->func->name, impl->stmts->ret.count);
663 } else {
664 data->error(PSI_WARNING, "Missing `return` statement for implementation %s",
665 impl->func->name);
666 }
667 return 0;
668 }
669
670 ret = impl->stmts->ret.list[0];
671
672 if (!(impl->decl = locate_impl_decl(data->decls, ret))) {
673 data->error(PSI_WARNING, "Missing declaration for implementation %s",
674 impl->func->name);
675 return 0;
676 }
677
678 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)) {
679 return 0;
680 }
681
682 impl->decl->impl = impl;
683
684 return 1;
685 }
686
687 static inline int validate_impl_let_stmts(PSI_Data *data, impl *impl) {
688 size_t i, j;
689 /* we can have multiple let stmts */
690
691 /* check that we have a decl arg for every let stmt */
692 for (i = 0; i < impl->stmts->let.count; ++i) {
693 let_stmt *let = impl->stmts->let.list[i];
694 decl_var *let_var;
695 int check = 0;
696
697 if (let->val && let->val->kind == PSI_LET_TMP) {
698 let_var = let->val->data.var;
699 } else {
700 let_var = let->var;
701 }
702
703 if (!locate_decl_var_arg(let_var, impl->decl->args, impl->decl->func)) {
704 data->error(PSI_WARNING, "Unknown variable '%s' in `let` statement"
705 " of implementation '%s'", let_var->name, impl->func->name);
706 return 0;
707 }
708
709 switch (let->val->kind) {
710 case PSI_LET_NULL:
711 break;
712 case PSI_LET_TMP:
713 /* e.g. let bar = &strval($bar); // decl_arg(char **bar) */
714 /* e.g. let foo = *bar; */
715 let->var->pointer_level = let->val->data.var->pointer_level;
716 let->var->arg = init_decl_arg(
717 init_decl_type(
718 real_decl_type(let->val->data.var->arg->type)->type,
719 real_decl_type(let->val->data.var->arg->type)->name),
720 init_decl_var(
721 let->var->name,
722 let->var->pointer_level,
723 let->var->array_size));
724 break;
725 case PSI_LET_NUMEXP:
726 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.num)) {
727 return 0;
728 }
729 break;
730 case PSI_LET_CALLOC:
731 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->nmemb)) {
732 return 0;
733 }
734 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->size)) {
735 return 0;
736 }
737 break;
738 case PSI_LET_FUNC:
739 if (impl->func->args) {
740 for (j = 0; j < impl->func->args->count; ++j) {
741 impl_arg *iarg = impl->func->args->args[j];
742
743 if (!strcmp(let->val->data.func->var->name, iarg->var->name)) {
744 let->val->data.func->arg = iarg;
745 check = 1;
746 break;
747 }
748 }
749 }
750 if (!check) {
751 data->error(PSI_WARNING, "Unknown value '$%s' of `let` statement"
752 " for variable '%s' of implementation '%s'",
753 let->val->data.func->var->name, let->var->name, impl->func->name);
754 return 0;
755 }
756 break;
757 }
758 }
759
760 /* check that we have a let stmt for every decl arg */
761 if (impl->decl->args) for (i = 0; i < impl->decl->args->count; ++i) {
762 decl_arg *darg = impl->decl->args->args[i];
763 int check = 0;
764
765 for (j = 0; j < impl->stmts->let.count; ++j) {
766 let_stmt *let = impl->stmts->let.list[j];
767
768 if (!strcmp(let->var->name, darg->var->name)) {
769 darg->let = let;
770 check = 1;
771 break;
772 }
773 }
774 if (!check) {
775 data->error(PSI_WARNING, "Missing `let` statement for arg '%s %.*s%s'"
776 " of declaration '%s' for implementation '%s'",
777 darg->type->name, (int) darg->var->pointer_level, "*****",
778 darg->var->name, impl->decl->func->var->name, impl->func->name);
779 return 0;
780 }
781 }
782
783 return 1;
784 }
785 static inline int validate_impl_set_stmts(PSI_Data *data, impl *impl) {
786 size_t i, j, k;
787 /* we can have any count of set stmts; processing out vars */
788 /* check that set stmts reference known variables */
789 for (i = 0; i < impl->stmts->set.count; ++i) {
790 set_stmt *set = impl->stmts->set.list[i];
791 int check = 0;
792
793 if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
794 impl_arg *iarg = impl->func->args->args[j];
795
796 if (!strcmp(set->var->name, iarg->var->name)) {
797 set->arg = iarg;
798 check = 1;
799 break;
800 }
801 }
802 if (!check) {
803 data->error(PSI_WARNING, "Unknown variable '$%s' of `set` statement"
804 " of implementation '%s'",
805 set->var->name, impl->func->name);
806 return 0;
807 }
808
809 for (j = 0; j < set->val->vars->count; ++j) {
810 decl_var *set_var = set->val->vars->vars[j];
811
812 check = 0;
813 if (impl->decl->args) {
814 for (k = 0; k < impl->decl->args->count; ++k) {
815 decl_arg *set_arg = impl->decl->args->args[k];
816
817 if (!strcmp(set_var->name, set_arg->var->name)) {
818 check = 1;
819 set_var->arg = set_arg;
820 if (!validate_set_value(data, set->val, 1, &set_arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
821 return 0;
822 }
823 break;
824 }
825 }
826 }
827 if (!check) {
828 for (k = 0; k < impl->stmts->let.count; ++k) {
829 let_stmt *let = impl->stmts->let.list[k];
830
831 /* check temp vars */
832 if (let->val && let->val->kind == PSI_LET_TMP) {
833 if (!strcmp(set_var->name, let->var->name)) {
834 check = 1;
835 set_var->arg = let->var->arg;
836 if (!validate_set_value(data, set->val, 1, &set_var->arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
837 return 0;
838 }
839 break;
840 }
841 }
842 }
843 }
844
845 if (!check) {
846 data->error(PSI_WARNING, "Unknown value '%s' of `set` statement"
847 " for variable '$%s' of implementation '%s'",
848 set_var->name, set->arg->var->name, impl->func->name);
849 return 0;
850 }
851 }
852 }
853 return 1;
854 }
855 static inline decl *locate_free_decl(decls *decls, free_call *f) {
856 if (decls) {
857 size_t i;
858
859 for (i = 0; i < decls->count; ++i) {
860 if (!strcmp(decls->list[i]->func->var->name, f->func)) {
861 f->decl = decls->list[i];
862 return decls->list[i];
863 }
864 }
865 }
866
867 return NULL;
868 }
869 static inline int validate_impl_free_stmts(PSI_Data *data, impl *impl) {
870 size_t i, j, k, l;
871 /* we can have any count of free stmts; freeing any out vars */
872 for (i = 0; i < impl->stmts->fre.count; ++i) {
873 free_stmt *fre = impl->stmts->fre.list[i];
874
875 for (j = 0; j < fre->calls->count; ++j) {
876 free_call *free_call = fre->calls->list[j];
877
878 /* first find the decl of the free func */
879 if (!locate_free_decl(data->decls, free_call)) {
880 data->error(PSI_WARNING, "Unknown function '%s' in `free` statement"
881 " of implementation '%s'", free_call->func, impl->func->name);
882 return 0;
883 }
884 if (!impl->decl->args) {
885 data->error(PSI_WARNING, "Declaration '%s' of implementation '%s'"
886 " does not have any arguments to free",
887 impl->decl->func->var->name, impl->func->name);
888 }
889
890 /* now check for known vars */
891 for (l = 0; l < free_call->vars->count; ++l) {
892 int check = 0;
893 decl_var *free_var = free_call->vars->vars[l];
894
895 for (k = 0; k < impl->decl->args->count; ++k) {
896 decl_arg *free_arg = impl->decl->args->args[k];
897
898 if (!strcmp(free_var->name, free_arg->var->name)) {
899 check = 1;
900 free_var->arg = free_arg;
901 break;
902 }
903 }
904
905 if (!check) {
906 data->error(PSI_WARNING, "Unknown variable '%s' of `free` statement"
907 " of implementation '%s'",
908 free_var->name, impl->func->name);
909 return 0;
910 }
911 }
912 }
913 }
914 return 1;
915 }
916 static inline int validate_impl_stmts(PSI_Data *data, impl *impl) {
917 if (!impl->stmts) {
918 data->error(PSI_WARNING, "Missing body for implementation %s!",
919 impl->func->name);
920 return 0;
921 }
922
923 if (!validate_impl_ret_stmt(data, impl)) {
924 return 0;
925 }
926
927 if (!validate_impl_let_stmts(data, impl)) {
928 return 0;
929 }
930 if (!validate_impl_set_stmts(data, impl)) {
931 return 0;
932 }
933 if (!validate_impl_free_stmts(data, impl)) {
934 return 0;
935 }
936
937 return 1;
938 }
939
940 PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
941 {
942 size_t i;
943 PSI_Data T;
944 struct psi_predef_type *predef_type;
945 struct psi_predef_const *predef_const;
946 struct psi_predef_struct *predef_struct;
947 struct psi_predef_decl *predef_decl;
948
949 if (!C) {
950 C = malloc(sizeof(*C));
951 }
952 memset(C, 0, sizeof(*C));
953
954 C->error = error;
955 C->ops = ops;
956
957 if (ops->init) {
958 ops->init(C);
959 }
960
961 ZEND_ASSERT(ops->call != NULL);
962 ZEND_ASSERT(ops->compile != NULL);
963
964 /* build up predefs in a temporary PSI_Data for validation */
965 memset(&T, 0, sizeof(T));
966 T.error = error;
967
968 for (predef_type = &psi_predef_types[0]; predef_type->type_tag; ++predef_type) {
969 decl_type *type = init_decl_type(predef_type->type_tag, predef_type->type_name);
970 decl_typedef *def = init_decl_typedef(predef_type->alias, type);
971
972 T.defs = add_decl_typedef(T.defs, def);
973 }
974 for (predef_const = &psi_predef_consts[0]; predef_const->type_tag; ++predef_const) {
975 impl_def_val *val = init_impl_def_val(predef_const->val_type_tag, predef_const->val_text);
976 const_type *type = init_const_type(predef_const->type_tag, predef_const->type_name);
977 constant *constant = init_constant(type, predef_const->var_name, val);
978
979 T.consts = add_constant(T.consts, constant);
980 }
981 for (predef_struct = &psi_predef_structs[0]; predef_struct->type_tag; ++predef_struct) {
982 struct psi_predef_struct *member;
983 decl_args *dargs = init_decl_args(NULL);
984 decl_struct *dstruct = init_decl_struct(predef_struct->var_name, dargs);
985
986 dstruct->size = predef_struct->size;
987 for (member = &predef_struct[1]; member->type_tag; ++member) {
988 decl_type *type;
989 decl_var *dvar;
990 decl_arg *darg;
991
992 type = init_decl_type(member->type_tag, member->type_name);
993 dvar = init_decl_var(member->var_name, member->pointer_level, member->array_size);
994 darg = init_decl_arg(type, dvar);
995 darg->layout = init_decl_struct_layout(member->offset, member->size);
996 dargs = add_decl_arg(dargs, darg);
997 }
998
999 T.structs = add_decl_struct(T.structs, dstruct);
1000 predef_struct = member;
1001 }
1002 for (predef_decl = &psi_predef_decls[0]; predef_decl->type_tag; ++predef_decl) {
1003 struct psi_predef_decl *farg;
1004 decl_type *ftype = init_decl_type(predef_decl->type_tag, predef_decl->type_name);
1005 decl_var *fname = init_decl_var(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
1006 decl_arg *func = init_decl_arg(ftype, fname);
1007 decl_args *args = init_decl_args(NULL);
1008 decl *decl = init_decl(init_decl_abi("default"), func, args);
1009
1010
1011 for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
1012 decl_type *arg_type = init_decl_type(farg->type_tag, farg->type_name);
1013 decl_var *arg_var = init_decl_var(farg->var_name, farg->pointer_level, farg->array_size);
1014 decl_arg *darg = init_decl_arg(arg_type, arg_var);
1015 args = add_decl_arg(args, darg);
1016 }
1017
1018 T.decls = add_decl(T.decls, decl);
1019 predef_decl = farg;
1020 }
1021
1022 for (i = 0; i < T.defs->count; ++i) {
1023 decl_typedef *def = T.defs->list[i];
1024
1025 if (validate_decl_typedef(&T, def)) {
1026 C->defs = add_decl_typedef(C->defs, def);
1027 }
1028 }
1029
1030 for (i = 0; i < T.consts->count; ++i) {
1031 constant *constant = T.consts->list[i];
1032
1033 if (validate_constant(&T, constant)) {
1034 C->consts = add_constant(C->consts, constant);
1035 }
1036 }
1037
1038 for (i = 0; i < T.structs->count; ++i) {
1039 decl_struct *dstruct = T.structs->list[i];
1040
1041 if (validate_decl_struct(&T, dstruct)) {
1042 C->structs = add_decl_struct(C->structs, dstruct);
1043 }
1044 }
1045
1046 for (i = 0; i < T.decls->count; ++i) {
1047 decl *decl = T.decls->list[i];
1048
1049 if (validate_decl(&T, NULL, decl)) {
1050 C->decls = add_decl(C->decls, decl);
1051 }
1052 }
1053
1054 C->count = 1;
1055 C->data = malloc(sizeof(*C->data));
1056 PSI_DataExchange(C->data, &T);
1057
1058 return C;
1059 }
1060
1061 int PSI_ContextValidate(PSI_Context *C, PSI_Parser *P)
1062 {
1063 PSI_Data *D;
1064 void *dlopened = NULL;
1065 size_t count = C->count++;
1066
1067 C->data = realloc(C->data, C->count * sizeof(*C->data));
1068 D = PSI_DataExchange(&C->data[count], PSI_DATA(P));
1069
1070 if (D->defs) {
1071 size_t i;
1072
1073 for (i = 0; i < D->defs->count; ++i) {
1074 if (validate_decl_typedef(PSI_DATA(C), D->defs->list[i])) {
1075 C->defs = add_decl_typedef(C->defs, D->defs->list[i]);
1076 }
1077 }
1078 }
1079 if (D->structs) {
1080 size_t i;
1081
1082 for (i = 0; i < D->structs->count; ++i) {
1083 if (validate_decl_struct(PSI_DATA(C), D->structs->list[i])) {
1084 C->structs = add_decl_struct(C->structs, D->structs->list[i]);
1085 }
1086 }
1087 }
1088 if (D->consts) {
1089 size_t i;
1090
1091 for (i = 0; i < D->consts->count; ++i) {
1092 if (validate_constant(PSI_DATA(C), D->consts->list[i])) {
1093 C->consts = add_constant(C->consts, D->consts->list[i]);
1094 }
1095 }
1096 }
1097
1098 if (!validate_lib(D, &dlopened)) {
1099 return 0;
1100 }
1101
1102 add_decl_lib(&C->psi.libs, dlopened);
1103
1104 if (D->decls) {
1105 size_t i;
1106
1107 for (i = 0; i < D->decls->count; ++i) {
1108 if (validate_decl(PSI_DATA(C), dlopened, D->decls->list[i])) {
1109 C->decls = add_decl(C->decls, D->decls->list[i]);
1110 }
1111 }
1112 }
1113 if (D->impls) {
1114 size_t i;
1115
1116 for (i = 0; i < D->impls->count; ++i) {
1117 if (validate_impl_stmts(PSI_DATA(C), D->impls->list[i])) {
1118 C->impls = add_impl(C->impls, D->impls->list[i]);
1119 }
1120 }
1121 }
1122
1123 return 1;
1124 }
1125
1126 static int psi_select_dirent(const struct dirent *entry)
1127 {
1128 #ifndef FNM_CASEFOLD
1129 #define FNM_CASEFOLD 0
1130 #endif
1131 return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
1132 }
1133
1134 void PSI_ContextBuild(PSI_Context *C, const char *paths)
1135 {
1136 int i, n, flags = psi_check_env("PSI_DEBUG") ? PSI_PARSER_DEBUG : 0;
1137 char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
1138 struct dirent **entries = NULL;
1139
1140
1141 do {
1142 sep = strchr(ptr, ':');
1143
1144 if (sep) {
1145 *sep = 0;
1146 }
1147
1148 n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
1149
1150 if (n > 0) {
1151 for (i = 0; i < n; ++i) {
1152 char psi[MAXPATHLEN];
1153 PSI_Parser P;
1154
1155 if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", ptr, entries[i]->d_name)) {
1156 C->error(PSI_WARNING, "Path to PSI file too long: %s/%s",
1157 ptr, entries[i]->d_name);
1158 }
1159 if (!PSI_ParserInit(&P, psi, C->error, flags)) {
1160 C->error(PSI_WARNING, "Failed to init PSI parser (%s): %s",
1161 psi, strerror(errno));
1162 continue;
1163 }
1164
1165 while (0 < PSI_ParserScan(&P)) {
1166 PSI_ParserParse(&P, PSI_TokenAlloc(&P));
1167 if (P.num == PSI_T_EOF) {
1168 break;
1169 }
1170 }
1171
1172 PSI_ParserParse(&P, NULL);
1173 PSI_ContextValidate(C, &P);
1174 PSI_ParserDtor(&P);
1175 }
1176 }
1177
1178 if (entries) {
1179 for (i = 0; i < n; ++i) {
1180 free(entries[i]);
1181 }
1182 free(entries);
1183 }
1184
1185 ptr = sep + 1;
1186 } while (sep);
1187
1188
1189 if (PSI_ContextCompile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
1190 C->error(PSI_WARNING, "Failed to register functions!");
1191 }
1192
1193 free(cpy);
1194
1195 }
1196
1197 zend_function_entry *PSI_ContextCompile(PSI_Context *C)
1198 {
1199 size_t i;
1200
1201 if (C->consts) {
1202 zend_constant zc;
1203
1204 zc.flags = CONST_PERSISTENT|CONST_CS;
1205 zc.module_number = EG(current_module)->module_number;
1206
1207 for (i = 0; i < C->consts->count; ++i) {
1208 constant *c = C->consts->list[i];
1209
1210 zc.name = zend_string_init(c->name + (c->name[0] == '\\'), strlen(c->name) - (c->name[0] == '\\'), 1);
1211 ZVAL_NEW_STR(&zc.value, zend_string_init(c->val->text, strlen(c->val->text), 1));
1212
1213 switch (c->type->type) {
1214 case PSI_T_BOOL:
1215 convert_to_boolean(&zc.value);
1216 break;
1217 case PSI_T_INT:
1218 convert_to_long(&zc.value);
1219 break;
1220 case PSI_T_FLOAT:
1221 convert_to_double(&zc.value);
1222 break;
1223 }
1224 zend_register_constant(&zc);
1225 }
1226 }
1227
1228 return C->closures = C->ops->compile(C);
1229 }
1230
1231
1232 void PSI_ContextCall(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va)
1233 {
1234 C->ops->call(C, decl_call, va);
1235 }
1236
1237 static inline void dump_decl_type(int fd, decl_type *t) {
1238 const char *pre;
1239
1240 switch (t->type) {
1241 case PSI_T_STRUCT:
1242 pre = "struct ";
1243 break;
1244 default:
1245 pre = "";
1246 }
1247 dprintf(fd, "%s%s", pre, t->name);
1248 }
1249 static inline void dump_decl_var(int fd, decl_var *v) {
1250 dprintf(fd, "%.*s%s", v->pointer_level-!!v->array_size, "**********", v->name);
1251 if (v->array_size) {
1252 dprintf(fd, "[%u]", v->array_size);
1253 }
1254 }
1255 static inline void dump_decl_arg(int fd, decl_arg *a) {
1256 dump_decl_type(fd, a->type);
1257 dprintf(fd, " ");
1258 dump_decl_var(fd, a->var);
1259 }
1260 static inline void dump_level(int fd, unsigned level) {
1261 dprintf(fd, "%.*s", level, "\t\t\t\t\t\t\t\t\t");
1262 }
1263 static inline void dump_num_exp(int fd, num_exp *exp) {
1264 while (exp) {
1265 switch (exp->t) {
1266 case PSI_T_NUMBER:
1267 dprintf(fd, "%s", exp->u.numb);
1268 break;
1269 case PSI_T_NSNAME:
1270 dprintf(fd, "%s", exp->u.cnst->name);
1271 break;
1272 case PSI_T_NAME:
1273 dump_decl_var(fd, exp->u.dvar);
1274 break;
1275 EMPTY_SWITCH_DEFAULT_CASE();
1276 }
1277 if (exp->operand) {
1278 char op;
1279
1280 switch (exp->operator) {
1281 case PSI_T_PLUS: op = '+'; break;
1282 case PSI_T_MINUS: op = '-'; break;
1283 case PSI_T_ASTERISK:op = '*'; break;
1284 case PSI_T_SLASH: op = '/'; break;
1285 EMPTY_SWITCH_DEFAULT_CASE();
1286 }
1287 dprintf(fd, " %c ", op);
1288 }
1289 exp = exp->operand;
1290 }
1291 }
1292 static inline void dump_impl_set_value(int fd, set_value *set, unsigned level) {
1293 size_t i;
1294
1295 if (level > 1) {
1296 /* only if not directly after `set ...` */
1297 dump_level(fd, level);
1298 }
1299 dprintf(fd, "%s(", set->func->name);
1300
1301 for (i = 0; i < set->vars->count; ++i) {
1302 decl_var *svar = set->vars->vars[i];
1303 if (i) {
1304 dprintf(fd, ", ");
1305 }
1306 dump_decl_var(fd, svar);
1307 }
1308 if (set->num) {
1309 dprintf(fd, ", ");
1310 dump_num_exp(fd, set->num);
1311 }
1312 if (set->inner) {
1313 dprintf(fd, ",\n");
1314 for (i = 0; i < set->count; ++i) {
1315 dump_impl_set_value(fd, set->inner[i], level+1);
1316 }
1317 /* only if inner stmts, i.e. with new lines, were dumped */
1318 dump_level(fd, level);
1319 }
1320 if (level > 1) {
1321 dprintf(fd, "),\n");
1322 } else {
1323 dprintf(fd, ");\n");
1324 }
1325 }
1326 void PSI_ContextDump(PSI_Context *C, int fd)
1327 {
1328 size_t i, j, k, l;
1329
1330 #ifdef HAVE_LIBJIT
1331 if (C->ops == PSI_Libjit()) {
1332 dprintf(fd, "// psi.engine=jit\n");
1333 }
1334 #endif
1335 #ifdef HAVE_LIBFFI
1336 if (C->ops == PSI_Libffi()) {
1337 dprintf(fd, "// psi.engine=ffi\n");
1338 }
1339 #endif
1340 dprintf(fd, "\n");
1341
1342 if (C->defs) {
1343 for (i = 0; i < C->defs->count; ++i) {
1344 decl_typedef *tdef = C->defs->list[i];
1345
1346 dprintf(fd, "typedef ");
1347 dump_decl_type(fd, tdef->type);
1348 dprintf(fd, " %s;\n", tdef->alias);
1349 }
1350 dprintf(fd, "\n");
1351 }
1352
1353 if (C->structs) {
1354 for (i = 0; i < C->structs->count; ++i) {
1355 decl_struct *strct = C->structs->list[i];
1356
1357 dprintf(fd, "struct %s::(%zu) {\n", strct->name, strct->size);
1358 if (strct->args) for (j = 0; j < strct->args->count; ++j) {
1359 decl_arg *sarg = strct->args->args[j];
1360
1361 dprintf(fd, "\t");
1362 dump_decl_arg(fd, sarg);
1363 dprintf(fd, "::(%zu, %zu);\n", sarg->layout->pos, sarg->layout->len);
1364 }
1365 dprintf(fd, "}\n");
1366 }
1367 dprintf(fd, "\n");
1368 }
1369 if (C->consts) {
1370 for (i = 0; i < C->consts->count; ++i) {
1371 constant *cnst = C->consts->list[i];
1372
1373 dprintf(fd, "const %s %s = ", cnst->type->name, cnst->name);
1374 if (cnst->val->type == PSI_T_QUOTED_STRING) {
1375 dprintf(fd, "\"%s\";\n", cnst->val->text);
1376 } else {
1377 dprintf(fd, "%s;\n", cnst->val->text);
1378 }
1379 }
1380 dprintf(fd, "\n");
1381 }
1382 if (C->decls) {
1383 for (i = 0; i < C->decls->count; ++i) {
1384 decl *decl = C->decls->list[i];
1385
1386 dprintf(fd, "%s ", decl->abi->convention);
1387 dump_decl_arg(fd, decl->func);
1388 dprintf(fd, "(");
1389 if (decl->args) {
1390 for (j = 0; j < decl->args->count; ++j) {
1391 if (j) {
1392 dprintf(fd, ", ");
1393 }
1394 dump_decl_arg(fd, decl->args->args[j]);
1395 }
1396 if (decl->args->varargs) {
1397 dprintf(fd, ", ...");
1398 }
1399 }
1400 dprintf(fd, ");\n");
1401 }
1402 dprintf(fd, "\n");
1403 }
1404 if (C->impls) {
1405 for (i = 0; i < C->impls->count; ++i) {
1406 impl *impl = C->impls->list[i];
1407
1408 dprintf(fd, "function %s(", impl->func->name);
1409 if (impl->func->args) {
1410 for (j = 0; j < impl->func->args->count; ++j) {
1411 impl_arg *iarg = impl->func->args->args[j];
1412
1413 dprintf(fd, "%s%s %s$%s",
1414 j ? ", " : "",
1415 iarg->type->name,
1416 iarg->var->reference ? "&" : "",
1417 iarg->var->name);
1418 if (iarg->def) {
1419 dprintf(fd, " = %s", iarg->def->text);
1420 }
1421 }
1422 if (impl->func->args->vararg.name) {
1423 impl_arg *vararg = impl->func->args->vararg.name;
1424
1425 dprintf(fd, ", %s %s...$%s",
1426 vararg->type->name,
1427 vararg->var->reference ? "&" : "",
1428 vararg->var->name);
1429 }
1430 }
1431 dprintf(fd, ") : %s%s {\n",
1432 impl->func->return_reference ? "&":"",
1433 impl->func->return_type->name);
1434 if (impl->stmts) {
1435 for (j = 0; j < impl->stmts->let.count; ++j) {
1436 let_stmt *let = impl->stmts->let.list[j];
1437
1438 dprintf(fd, "\tlet %s", let->var->name);
1439 if (let->val) {
1440 dprintf(fd, " = %s", let->val->flags.one.is_reference ? "&" : "");
1441 switch (let->val->kind) {
1442 case PSI_LET_NULL:
1443 dprintf(fd, "NULL");
1444 break;
1445 case PSI_LET_TMP:
1446 dump_decl_var(fd, let->val->data.var);
1447 break;
1448 case PSI_LET_CALLOC:
1449 dprintf(fd, "calloc(");
1450 dump_num_exp(fd, let->val->data.alloc->nmemb);
1451 dprintf(fd, ", ");
1452 dump_num_exp(fd, let->val->data.alloc->size);
1453 dprintf(fd, ")");
1454 break;
1455 case PSI_LET_FUNC:
1456 dprintf(fd, "%s($%s)", let->val->data.func->name,
1457 let->val->data.func->var->name);
1458 break;
1459
1460 EMPTY_SWITCH_DEFAULT_CASE();
1461 }
1462 dprintf(fd, ";\n");
1463 }
1464 }
1465 for (j = 0; j < impl->stmts->ret.count; ++j) {
1466 return_stmt *ret = impl->stmts->ret.list[j];
1467
1468 dprintf(fd, "\treturn ");
1469 dump_impl_set_value(fd, ret->set, 1);
1470 }
1471 for (j = 0; j < impl->stmts->set.count; ++j) {
1472 set_stmt *set = impl->stmts->set.list[j];
1473
1474 dprintf(fd, "\tset $%s = ", set->var->name);
1475 dump_impl_set_value(fd, set->val, 1);
1476 }
1477 for (j = 0; j < impl->stmts->fre.count; ++j) {
1478 free_stmt *fre = impl->stmts->fre.list[j];
1479
1480 dprintf(fd, "\tfree ");
1481 for (k = 0; k < fre->calls->count; ++k) {
1482 free_call *call = fre->calls->list[k];
1483
1484 if (k) {
1485 dprintf(fd, ", ");
1486 }
1487 dprintf(fd, "%s(", call->func);
1488 for (l = 0; l < call->vars->count; ++l) {
1489 decl_var *fvar = call->vars->vars[l];
1490
1491 dump_decl_var(fd, fvar);
1492 }
1493 dprintf(fd, ");\n");
1494 }
1495 }
1496 }
1497 dprintf(fd, "}\n");
1498 }
1499 dprintf(fd, "\n");
1500 }
1501 }
1502
1503 void PSI_ContextDtor(PSI_Context *C)
1504 {
1505 size_t i;
1506 zend_function_entry *zfe;
1507
1508 if (C->ops->dtor) {
1509 C->ops->dtor(C);
1510 }
1511
1512 free_decl_libs(&C->psi.libs);
1513
1514 if (C->data) {
1515 for (i = 0; i < C->count; ++i) {
1516 PSI_DataDtor(&C->data[i]);
1517 }
1518 free(C->data);
1519 }
1520
1521 if (C->closures) {
1522 for (zfe = C->closures; zfe->fname; ++zfe) {
1523 free((void *) zfe->arg_info);
1524 }
1525 free(C->closures);
1526 }
1527
1528 if (C->consts) {
1529 if (C->consts->list) {
1530 free(C->consts->list);
1531 }
1532 free(C->consts);
1533 }
1534 if (C->defs) {
1535 if (C->defs->list) {
1536 free(C->defs->list);
1537 }
1538 free(C->defs);
1539 }
1540 if (C->structs) {
1541 if (C->structs->list) {
1542 free(C->structs->list);
1543 }
1544 free(C->structs);
1545 }
1546 if (C->decls) {
1547 if (C->decls->list) {
1548 free(C->decls->list);
1549 }
1550 free(C->decls);
1551 }
1552 if (C->impls) {
1553 if (C->impls->list) {
1554 free(C->impls->list);
1555 }
1556 free(C->impls);
1557 }
1558
1559 memset(C, 0, sizeof(*C));
1560 }
1561
1562 void PSI_ContextFree(PSI_Context **C)
1563 {
1564 if (*C) {
1565 PSI_ContextDtor(*C);
1566 free(*C);
1567 *C = NULL;
1568 }
1569 }
PHP System Interface / POSIX Standard Interface