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3d2092064af0c087e68ff6fdf81d423a75a6f4e2
[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(NULL, 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(NULL, 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(def->token, PSI_WARNING,
288 "Type '%s' cannot be aliased to %s'%s'",
289 def->type->name, def->type->type == PSI_T_STRUCT?"struct ":"",def->alias);
290 return 0;
291 }
292 /* FIXME: check def->alias */
293 return 1;
294 }
295
296 static inline int validate_constant(PSI_Data *data, constant *c) {
297 /* FIXME */
298 return 1;
299 }
300
301 static inline int validate_decl_arg(PSI_Data *data, decl_arg *arg) {
302 if (!validate_decl_type(data, arg->type)) {
303 data->error(arg->type->token, PSI_WARNING,
304 "Cannot use '%s'(%d) as type for decl var '%s'",
305 arg->type->name, arg->type->type, arg->var->name);
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 "mscdecl",
360 "stdcall",
361 "fastcall",
362 };
363 static inline int validate_decl_abi(PSI_Data *data, decl_abi *abi) {
364 size_t i;
365
366 for (i = 0; i < sizeof(abi_ccs)/sizeof(char*); ++i) {
367 if (strcasecmp(abi->convention, abi_ccs[i])) {
368 return 1;
369 }
370 }
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(func->token, 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(func->token, PSI_WARNING,
397 "Failed to locate symbol '%s': %s",
398 func->var->name, dlerror());
399 }
400 }
401 return 1;
402 }
403
404 static inline int validate_decl(PSI_Data *data, void *dl, decl *decl) {
405 if (!validate_decl_abi(data, decl->abi)) {
406 data->error(decl->abi->token, PSI_WARNING,
407 "Invalid calling convention: '%s'", decl->abi->token->text);
408 return 0;
409 }
410 if (!validate_decl_func(data, dl, decl, decl->func)) {
411 return 0;
412 }
413 if (decl->args) {
414 size_t i;
415
416 for (i = 0; i < decl->args->count; ++i) {
417 if (!validate_decl_arg(data, decl->args->args[i])) {
418 return 0;
419 }
420 }
421 }
422 return 1;
423 }
424 static inline decl_arg *locate_decl_var_arg(decl_var *var, decl_args *args, decl_arg *func) {
425 size_t i;
426
427 for (i = 0; i < args->count; ++i) {
428 decl_arg *arg = args->args[i];
429
430 if (!strcmp(var->name, arg->var->name)) {
431 ZEND_ASSERT(!var->arg || var->arg == arg);
432 return var->arg = arg;
433 }
434 }
435 if (func && !strcmp(var->name, func->var->name)) {
436 return var->arg = func;
437 }
438
439 return NULL;
440 }
441 static inline decl_arg *locate_struct_member(decl_struct *s, decl_var *var) {
442 if (s->args) {
443 return locate_decl_var_arg(var, s->args, NULL);
444 }
445
446 return NULL;
447 }
448 static inline constant *locate_num_exp_constant(num_exp *exp, constants *consts) {
449 size_t i;
450
451 for (i = 0; i < consts->count; ++i) {
452 constant *cnst = consts->list[i];
453
454 if (!strcmp(cnst->name, exp->u.numb)) {
455 free(exp->u.numb);
456 return exp->u.cnst = cnst;
457 }
458 }
459
460 return NULL;
461 }
462 static inline int validate_num_exp(PSI_Data *data, decl_args *dargs, decl_arg *func, num_exp *exp) {
463 if (exp->operand) {
464 switch (exp->operator) {
465 case PSI_T_PLUS:
466 exp->calculator = psi_calc_add;
467 break;
468 case PSI_T_MINUS:
469 exp->calculator = psi_calc_sub;
470 break;
471 case PSI_T_ASTERISK:
472 exp->calculator = psi_calc_mul;
473 break;
474 case PSI_T_SLASH:
475 exp->calculator = psi_calc_div;
476 break;
477 EMPTY_SWITCH_DEFAULT_CASE();
478 }
479 if (!validate_num_exp(data, dargs, func, exp->operand)) {
480 return 0;
481 }
482 }
483 switch (exp->t) {
484 case PSI_T_NAME:
485 if (!locate_decl_var_arg(exp->u.dvar, dargs, func)) {
486 data->error(exp->token, PSI_WARNING, "Unknown variable '%s' in numeric expression",
487 exp->u.dvar->name);
488 return 0;
489 }
490 return 1;
491 case PSI_T_NSNAME:
492 if (!locate_num_exp_constant(exp, data->consts)) {
493 data->error(exp->token, PSI_WARNING, "Unknown constant '%s' in numeric expression",
494 exp->u.numb);
495 return 0;
496 }
497 return 1;
498 case PSI_T_NUMBER:
499 return 1;
500 default:
501 return 0;
502 }
503 }
504 static inline int validate_set_value_handler(set_value *set) {
505 switch (set->func->type) {
506 case PSI_T_TO_BOOL:
507 set->func->handler = psi_to_bool;
508 break;
509 case PSI_T_TO_INT:
510 set->func->handler = psi_to_int;
511 break;
512 case PSI_T_TO_FLOAT:
513 set->func->handler = psi_to_double;
514 break;
515 case PSI_T_TO_STRING:
516 set->func->handler = psi_to_string;
517 break;
518 case PSI_T_TO_ARRAY:
519 set->func->handler = psi_to_array;
520 break;
521 case PSI_T_TO_OBJECT:
522 set->func->handler = psi_to_object;
523 break;
524 case PSI_T_VOID:
525 set->func->handler = psi_to_void;
526 break;
527 default:
528 return 0;
529 }
530 return 1;
531 }
532 static inline void decl_var_arg_v(decl_args *args, va_list argp) {
533 int argc;
534 decl_arg **argv;
535
536 memset(args, 0, sizeof(*args));
537
538 while ((argc = va_arg(argp, int))) {
539 argv = va_arg(argp, decl_arg **);
540 while (argc--) {
541 add_decl_arg(args, *argv++);
542 }
543 }
544 }
545 static inline int validate_set_value_ex(PSI_Data *data, set_value *set, decl_arg *ref, decl_args *ref_list) {
546 size_t i;
547 decl_type *ref_type;
548 decl_var *set_var = set->vars->vars[0];
549
550 if (!validate_set_value_handler(set)) {
551 data->error(set->func->token, PSI_WARNING, "Invalid cast '%s'", set->func->name);
552 return 0;
553 }
554
555 for (i = 0; i < set->vars->count; ++i) {
556 decl_var *svar = set->vars->vars[i];
557 if (!svar->arg && !locate_decl_var_arg(svar, ref_list, NULL)) {
558 data->error(svar->token, PSI_WARNING, "Unknown variable '%s'", svar->name);
559 return 0;
560 }
561 }
562
563 if (!ref) {
564 ref = set_var->arg;
565 }
566 ref_type = real_decl_type(ref->type);
567
568 if (set->count) {
569 int is_to_array = (set->func->type == PSI_T_TO_ARRAY);
570 int is_pointer_to_struct = (ref_type->type == PSI_T_STRUCT && ref->var->pointer_level);
571
572 if (!is_to_array && !is_pointer_to_struct) {
573 data->error(set->func->token, E_WARNING, "Inner `set` statement casts only work with "
574 "to_array() casts on structs or pointers: %s(%s...", set->func->name, set->vars->vars[0]->name);
575 return 0;
576 }
577 }
578 if (set->num) {
579 if (!validate_num_exp(data, ref_list, ref, set->num)) {
580 return 0;
581 }
582 }
583
584 if (ref_type->type == PSI_T_STRUCT) {
585 /* to_array(struct, to_...) */
586 for (i = 0; i < set->count; ++i) {
587 decl_var *sub_var = set->inner[i]->vars->vars[0];
588 decl_arg *sub_ref = locate_struct_member(ref_type->strct, sub_var);
589
590 set->inner[i]->outer.set = set;
591 if (sub_ref) {
592 if (!validate_set_value_ex(data, set->inner[i], sub_ref, ref_type->strct->args)) {
593 return 0;
594 }
595 }
596 }
597 } else if (set->count == 1) {
598 /* to_array(ptr, to_string(*ptr)) */
599 decl_var *sub_var = set->inner[0]->vars->vars[0];
600 decl_arg *sub_ref = locate_decl_var_arg(sub_var, ref_list, ref);
601
602 set->inner[0]->outer.set = set;
603 if (sub_ref) {
604 if (strcmp(sub_var->name, set_var->name)) {
605 data->error(sub_var->token, E_WARNING, "Inner `set` statement casts on pointers must reference the same variable");
606 return 0;
607 }
608 if (!validate_set_value_ex(data, set->inner[0], sub_ref, ref_list)) {
609 return 0;
610 }
611 }
612 } else if (set->count > 1) {
613 data->error(set->func->token, E_WARNING, "Inner `set` statement casts on pointers may only occur once");
614 return 0;
615 }
616
617 return 1;
618 }
619 static inline int validate_set_value(PSI_Data *data, set_value *set, ...) {
620 va_list argp;
621 decl_args args = {0};
622 int check;
623
624 va_start(argp, set);
625 decl_var_arg_v(&args, argp);
626 va_end(argp);
627
628 check = validate_set_value_ex(data, set, NULL, &args);
629 if (args.args) {
630 free(args.args);
631 }
632 return check;
633 }
634 static inline decl *locate_impl_decl(decls *decls, return_stmt *ret) {
635 if (decls) {
636 size_t i;
637
638 for (i = 0; i < decls->count; ++i) {
639 if (!strcmp(decls->list[i]->func->var->name, ret->set->vars->vars[0]->name)) {
640 ret->decl = decls->list[i]->func;
641 return decls->list[i];
642 }
643 }
644 }
645
646 return NULL;
647 }
648 static inline int validate_impl_ret_stmt(PSI_Data *data, impl *impl) {
649 return_stmt *ret;
650
651 /* we must have exactly one ret stmt delcaring the native func to call */
652 /* and which type cast to apply */
653 if (impl->stmts->ret.count != 1) {
654 if (impl->stmts->ret.count > 1) {
655 data->error(impl->stmts->ret.list[1]->token, PSI_WARNING,
656 "Too many `return` statements for implmentation %s;"
657 " found %zu, exactly one is needed",
658 impl->func->name, impl->stmts->ret.count);
659 } else {
660 data->error(impl->func->token, PSI_WARNING,
661 "Missing `return` statement for implementation %s",
662 impl->func->name);
663 }
664 return 0;
665 }
666
667 ret = impl->stmts->ret.list[0];
668
669 if (!(impl->decl = locate_impl_decl(data->decls, ret))) {
670 data->error(ret->token, PSI_WARNING,
671 "Missing declaration '%s' for `return` statment for implementation %s",
672 ret->set->vars->vars[0]->name, impl->func->name);
673 return 0;
674 }
675
676 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)) {
677 return 0;
678 }
679
680 impl->decl->impl = impl;
681
682 return 1;
683 }
684
685 static inline int validate_impl_let_stmts(PSI_Data *data, impl *impl) {
686 size_t i, j;
687 /* we can have multiple let stmts */
688
689 /* check that we have a decl arg for every let stmt */
690 for (i = 0; i < impl->stmts->let.count; ++i) {
691 let_stmt *let = impl->stmts->let.list[i];
692 decl_var *let_var;
693 int check = 0;
694
695 if (let->val && let->val->kind == PSI_LET_TMP) {
696 let_var = let->val->data.var;
697 } else {
698 let_var = let->var;
699 }
700
701 if (!locate_decl_var_arg(let_var, impl->decl->args, impl->decl->func)) {
702 data->error(let_var->token, PSI_WARNING, "Unknown variable '%s' in `let` statement"
703 " of implementation '%s'", let_var->name, impl->func->name);
704 return 0;
705 }
706
707 switch (let->val->kind) {
708 case PSI_LET_NULL:
709 break;
710 case PSI_LET_TMP:
711 /* e.g. let bar = &strval($bar); // decl_arg(char **bar) */
712 /* e.g. let foo = *bar; */
713 let->var->pointer_level = let->val->data.var->pointer_level;
714 let->var->arg = init_decl_arg(
715 init_decl_type(
716 real_decl_type(let->val->data.var->arg->type)->type,
717 real_decl_type(let->val->data.var->arg->type)->name),
718 init_decl_var(
719 let->var->name,
720 let->var->pointer_level,
721 let->var->array_size));
722 break;
723 case PSI_LET_NUMEXP:
724 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.num)) {
725 return 0;
726 }
727 break;
728 case PSI_LET_CALLOC:
729 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->nmemb)) {
730 return 0;
731 }
732 if (!validate_num_exp(data, impl->decl->args, impl->decl->func, let->val->data.alloc->size)) {
733 return 0;
734 }
735 break;
736 case PSI_LET_FUNC:
737 if (impl->func->args) {
738 for (j = 0; j < impl->func->args->count; ++j) {
739 impl_arg *iarg = impl->func->args->args[j];
740
741 if (!strcmp(let->val->data.func->var->name, iarg->var->name)) {
742 let->val->data.func->arg = iarg;
743 check = 1;
744 break;
745 }
746 }
747 }
748 if (!check) {
749 data->error(let->var->token, PSI_WARNING, "Unknown value '$%s' of `let` statement"
750 " for variable '%s' of implementation '%s'",
751 let->val->data.func->var->name, let->var->name, impl->func->name);
752 return 0;
753 }
754 break;
755 }
756 }
757
758 /* check that we have a let stmt for every decl arg */
759 if (impl->decl->args) for (i = 0; i < impl->decl->args->count; ++i) {
760 decl_arg *darg = impl->decl->args->args[i];
761 int check = 0;
762
763 for (j = 0; j < impl->stmts->let.count; ++j) {
764 let_stmt *let = impl->stmts->let.list[j];
765
766 if (!strcmp(let->var->name, darg->var->name)) {
767 darg->let = let;
768 check = 1;
769 break;
770 }
771 }
772 if (!check) {
773 data->error(impl->func->token, PSI_WARNING,
774 "Missing `let` statement for arg '%s %.*s%s'"
775 " of declaration '%s' for implementation '%s'",
776 darg->type->name, (int) darg->var->pointer_level, "*****",
777 darg->var->name, impl->decl->func->var->name, impl->func->name);
778 return 0;
779 }
780 }
781
782 return 1;
783 }
784 static inline int validate_impl_set_stmts(PSI_Data *data, impl *impl) {
785 size_t i, j, k;
786 /* we can have any count of set stmts; processing out vars */
787 /* check that set stmts reference known variables */
788 for (i = 0; i < impl->stmts->set.count; ++i) {
789 set_stmt *set = impl->stmts->set.list[i];
790 int check = 0;
791
792 if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
793 impl_arg *iarg = impl->func->args->args[j];
794
795 if (!strcmp(set->var->name, iarg->var->name)) {
796 set->arg = iarg;
797 check = 1;
798 break;
799 }
800 }
801 if (!check) {
802 data->error(set->var->token, PSI_WARNING, "Unknown variable '$%s' of `set` statement"
803 " of implementation '%s'",
804 set->var->name, impl->func->name);
805 return 0;
806 }
807
808 for (j = 0; j < set->val->vars->count; ++j) {
809 decl_var *set_var = set->val->vars->vars[j];
810
811 check = 0;
812 if (impl->decl->args) {
813 for (k = 0; k < impl->decl->args->count; ++k) {
814 decl_arg *set_arg = impl->decl->args->args[k];
815
816 if (!strcmp(set_var->name, set_arg->var->name)) {
817 check = 1;
818 set_var->arg = set_arg;
819 if (!validate_set_value(data, set->val, 1, &set_arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
820 return 0;
821 }
822 break;
823 }
824 }
825 }
826 if (!check) {
827 for (k = 0; k < impl->stmts->let.count; ++k) {
828 let_stmt *let = impl->stmts->let.list[k];
829
830 /* check temp vars */
831 if (let->val && let->val->kind == PSI_LET_TMP) {
832 if (!strcmp(set_var->name, let->var->name)) {
833 check = 1;
834 set_var->arg = let->var->arg;
835 if (!validate_set_value(data, set->val, 1, &set_var->arg, 1, &impl->decl->func, impl->decl->args->count, impl->decl->args->args, 0)) {
836 return 0;
837 }
838 break;
839 }
840 }
841 }
842 }
843
844 if (!check) {
845 data->error(set_var->token, PSI_WARNING, "Unknown value '%s' of `set` statement"
846 " for variable '$%s' of implementation '%s'",
847 set_var->name, set->arg->var->name, impl->func->name);
848 return 0;
849 }
850 }
851 }
852 return 1;
853 }
854 static inline decl *locate_free_decl(decls *decls, free_call *f) {
855 if (decls) {
856 size_t i;
857
858 for (i = 0; i < decls->count; ++i) {
859 if (!strcmp(decls->list[i]->func->var->name, f->func)) {
860 f->decl = decls->list[i];
861 return decls->list[i];
862 }
863 }
864 }
865
866 return NULL;
867 }
868 static inline int validate_impl_free_stmts(PSI_Data *data, impl *impl) {
869 size_t i, j, k, l;
870 /* we can have any count of free stmts; freeing any out vars */
871 for (i = 0; i < impl->stmts->fre.count; ++i) {
872 free_stmt *fre = impl->stmts->fre.list[i];
873
874 for (j = 0; j < fre->calls->count; ++j) {
875 free_call *free_call = fre->calls->list[j];
876
877 /* first find the decl of the free func */
878 if (!locate_free_decl(data->decls, free_call)) {
879 data->error(free_call->token, PSI_WARNING,
880 "Missing declaration '%s' in `free` statement"
881 " of implementation '%s'",
882 free_call->func, impl->func->name);
883 return 0;
884 }
885 if (!impl->decl->args) {
886 data->error(free_call->token, PSI_WARNING,
887 "Declaration '%s' of implementation '%s'"
888 " does not have any arguments to free",
889 impl->decl->func->var->name, impl->func->name);
890 }
891
892 /* now check for known vars */
893 for (l = 0; l < free_call->vars->count; ++l) {
894 int check = 0;
895 decl_var *free_var = free_call->vars->vars[l];
896
897 for (k = 0; k < impl->decl->args->count; ++k) {
898 decl_arg *free_arg = impl->decl->args->args[k];
899
900 if (!strcmp(free_var->name, free_arg->var->name)) {
901 check = 1;
902 free_var->arg = free_arg;
903 break;
904 }
905 }
906
907 if (!check) {
908 data->error(free_var->token, PSI_WARNING,
909 "Unknown variable '%s' of `free` statement"
910 " of implementation '%s'",
911 free_var->name, impl->func->name);
912 return 0;
913 }
914 }
915 }
916 }
917 return 1;
918 }
919 static inline int validate_impl_stmts(PSI_Data *data, impl *impl) {
920 if (!impl->stmts) {
921 data->error(impl->func->token, PSI_WARNING,
922 "Missing body for implementation %s!",
923 impl->func->name);
924 return 0;
925 }
926
927 if (!validate_impl_ret_stmt(data, impl)) {
928 return 0;
929 }
930
931 if (!validate_impl_let_stmts(data, impl)) {
932 return 0;
933 }
934 if (!validate_impl_set_stmts(data, impl)) {
935 return 0;
936 }
937 if (!validate_impl_free_stmts(data, impl)) {
938 return 0;
939 }
940
941 return 1;
942 }
943
944 PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
945 {
946 size_t i;
947 PSI_Data T;
948 struct psi_predef_type *predef_type;
949 struct psi_predef_const *predef_const;
950 struct psi_predef_struct *predef_struct;
951 struct psi_predef_decl *predef_decl;
952
953 if (!C) {
954 C = malloc(sizeof(*C));
955 }
956 memset(C, 0, sizeof(*C));
957
958 C->error = error;
959 C->ops = ops;
960
961 if (ops->init) {
962 ops->init(C);
963 }
964
965 ZEND_ASSERT(ops->call != NULL);
966 ZEND_ASSERT(ops->compile != NULL);
967
968 /* build up predefs in a temporary PSI_Data for validation */
969 memset(&T, 0, sizeof(T));
970 T.error = error;
971
972 for (predef_type = &psi_predef_types[0]; predef_type->type_tag; ++predef_type) {
973 decl_type *type = init_decl_type(predef_type->type_tag, predef_type->type_name);
974 decl_typedef *def = init_decl_typedef(predef_type->alias, type);
975
976 T.defs = add_decl_typedef(T.defs, def);
977 }
978 for (predef_const = &psi_predef_consts[0]; predef_const->type_tag; ++predef_const) {
979 impl_def_val *val = init_impl_def_val(predef_const->val_type_tag, predef_const->val_text);
980 const_type *type = init_const_type(predef_const->type_tag, predef_const->type_name);
981 constant *constant = init_constant(type, predef_const->var_name, val);
982
983 T.consts = add_constant(T.consts, constant);
984 }
985 for (predef_struct = &psi_predef_structs[0]; predef_struct->type_tag; ++predef_struct) {
986 struct psi_predef_struct *member;
987 decl_args *dargs = init_decl_args(NULL);
988 decl_struct *dstruct = init_decl_struct(predef_struct->var_name, dargs);
989
990 dstruct->size = predef_struct->size;
991 for (member = &predef_struct[1]; member->type_tag; ++member) {
992 decl_type *type;
993 decl_var *dvar;
994 decl_arg *darg;
995
996 type = init_decl_type(member->type_tag, member->type_name);
997 dvar = init_decl_var(member->var_name, member->pointer_level, member->array_size);
998 darg = init_decl_arg(type, dvar);
999 darg->layout = init_decl_struct_layout(member->offset, member->size);
1000 dargs = add_decl_arg(dargs, darg);
1001 }
1002
1003 T.structs = add_decl_struct(T.structs, dstruct);
1004 predef_struct = member;
1005 }
1006 for (predef_decl = &psi_predef_decls[0]; predef_decl->type_tag; ++predef_decl) {
1007 struct psi_predef_decl *farg;
1008 decl_type *ftype = init_decl_type(predef_decl->type_tag, predef_decl->type_name);
1009 decl_var *fname = init_decl_var(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
1010 decl_arg *func = init_decl_arg(ftype, fname);
1011 decl_args *args = init_decl_args(NULL);
1012 decl *decl = init_decl(init_decl_abi("default"), func, args);
1013
1014 for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
1015 decl_type *arg_type = init_decl_type(farg->type_tag, farg->type_name);
1016 decl_var *arg_var = init_decl_var(farg->var_name, farg->pointer_level, farg->array_size);
1017 decl_arg *darg = init_decl_arg(arg_type, arg_var);
1018 args = add_decl_arg(args, darg);
1019 }
1020
1021 T.decls = add_decl(T.decls, decl);
1022 predef_decl = farg;
1023 }
1024
1025 for (predef_decl = &psi_predef_vararg_decls[0]; predef_decl->type_tag; ++predef_decl) {
1026 struct psi_predef_decl *farg;
1027 decl_type *ftype = init_decl_type(predef_decl->type_tag, predef_decl->type_name);
1028 decl_var *fname = init_decl_var(predef_decl->var_name, predef_decl->pointer_level, predef_decl->array_size);
1029 decl_arg *func = init_decl_arg(ftype, fname);
1030 decl_args *args = init_decl_args(NULL);
1031 decl *decl = init_decl(init_decl_abi("default"), func, args);
1032
1033 for (farg = &predef_decl[1]; farg->type_tag; ++farg) {
1034 decl_type *arg_type = init_decl_type(farg->type_tag, farg->type_name);
1035 decl_var *arg_var = init_decl_var(farg->var_name, farg->pointer_level, farg->array_size);
1036 decl_arg *darg = init_decl_arg(arg_type, arg_var);
1037 args = add_decl_arg(args, darg);
1038 }
1039 args->varargs = 1;
1040
1041 T.decls = add_decl(T.decls, decl);
1042 predef_decl = farg;
1043 }
1044
1045 for (i = 0; i < T.defs->count; ++i) {
1046 decl_typedef *def = T.defs->list[i];
1047
1048 if (validate_decl_typedef(&T, def)) {
1049 C->defs = add_decl_typedef(C->defs, def);
1050 }
1051 }
1052
1053 for (i = 0; i < T.consts->count; ++i) {
1054 constant *constant = T.consts->list[i];
1055
1056 if (validate_constant(&T, constant)) {
1057 C->consts = add_constant(C->consts, constant);
1058 }
1059 }
1060
1061 for (i = 0; i < T.structs->count; ++i) {
1062 decl_struct *dstruct = T.structs->list[i];
1063
1064 if (validate_decl_struct(&T, dstruct)) {
1065 C->structs = add_decl_struct(C->structs, dstruct);
1066 }
1067 }
1068
1069 for (i = 0; i < T.decls->count; ++i) {
1070 decl *decl = T.decls->list[i];
1071
1072 if (validate_decl(&T, NULL, decl)) {
1073 C->decls = add_decl(C->decls, decl);
1074 }
1075 }
1076
1077 C->count = 1;
1078 C->data = malloc(sizeof(*C->data));
1079 PSI_DataExchange(C->data, &T);
1080
1081 return C;
1082 }
1083
1084 int PSI_ContextValidate(PSI_Context *C, PSI_Parser *P)
1085 {
1086 PSI_Data *D;
1087 void *dlopened = NULL;
1088 size_t count = C->count++;
1089
1090 C->data = realloc(C->data, C->count * sizeof(*C->data));
1091 D = PSI_DataExchange(&C->data[count], PSI_DATA(P));
1092
1093 if (D->defs) {
1094 size_t i;
1095
1096 for (i = 0; i < D->defs->count; ++i) {
1097 if (validate_decl_typedef(PSI_DATA(C), D->defs->list[i])) {
1098 C->defs = add_decl_typedef(C->defs, D->defs->list[i]);
1099 }
1100 }
1101 }
1102 if (D->structs) {
1103 size_t i;
1104
1105 for (i = 0; i < D->structs->count; ++i) {
1106 if (validate_decl_struct(PSI_DATA(C), D->structs->list[i])) {
1107 C->structs = add_decl_struct(C->structs, D->structs->list[i]);
1108 }
1109 }
1110 }
1111 if (D->consts) {
1112 size_t i;
1113
1114 for (i = 0; i < D->consts->count; ++i) {
1115 if (validate_constant(PSI_DATA(C), D->consts->list[i])) {
1116 C->consts = add_constant(C->consts, D->consts->list[i]);
1117 }
1118 }
1119 }
1120
1121 if (!validate_lib(D, &dlopened)) {
1122 return 0;
1123 }
1124
1125 add_decl_lib(&C->psi.libs, dlopened);
1126
1127 if (D->decls) {
1128 size_t i;
1129
1130 for (i = 0; i < D->decls->count; ++i) {
1131 if (validate_decl(PSI_DATA(C), dlopened, D->decls->list[i])) {
1132 C->decls = add_decl(C->decls, D->decls->list[i]);
1133 }
1134 }
1135 }
1136 if (D->impls) {
1137 size_t i;
1138
1139 for (i = 0; i < D->impls->count; ++i) {
1140 if (validate_impl_stmts(PSI_DATA(C), D->impls->list[i])) {
1141 C->impls = add_impl(C->impls, D->impls->list[i]);
1142 }
1143 }
1144 }
1145
1146 return 1;
1147 }
1148
1149 static int psi_select_dirent(const struct dirent *entry)
1150 {
1151 #ifndef FNM_CASEFOLD
1152 #define FNM_CASEFOLD 0
1153 #endif
1154 return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
1155 }
1156
1157 void PSI_ContextBuild(PSI_Context *C, const char *paths)
1158 {
1159 int i, n, flags = psi_check_env("PSI_DEBUG") ? PSI_PARSER_DEBUG : 0;
1160 char *sep = NULL, *cpy = strdup(paths), *ptr = cpy;
1161 struct dirent **entries = NULL;
1162
1163
1164 do {
1165 sep = strchr(ptr, ':');
1166
1167 if (sep) {
1168 *sep = 0;
1169 }
1170
1171 n = php_scandir(ptr, &entries, psi_select_dirent, alphasort);
1172
1173 if (n > 0) {
1174 for (i = 0; i < n; ++i) {
1175 char psi[MAXPATHLEN];
1176 PSI_Parser P;
1177
1178 if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", ptr, entries[i]->d_name)) {
1179 C->error(NULL, PSI_WARNING, "Path to PSI file too long: %s/%s",
1180 ptr, entries[i]->d_name);
1181 }
1182 if (!PSI_ParserInit(&P, psi, C->error, flags)) {
1183 C->error(NULL, PSI_WARNING, "Failed to init PSI parser (%s): %s",
1184 psi, strerror(errno));
1185 continue;
1186 }
1187
1188 while (0 < PSI_ParserScan(&P)) {
1189 PSI_ParserParse(&P, PSI_TokenAlloc(&P));
1190 if (P.num == PSI_T_EOF) {
1191 break;
1192 }
1193 }
1194
1195 PSI_ParserParse(&P, NULL);
1196 PSI_ContextValidate(C, &P);
1197 PSI_ParserDtor(&P);
1198 }
1199 }
1200
1201 if (entries) {
1202 for (i = 0; i < n; ++i) {
1203 free(entries[i]);
1204 }
1205 free(entries);
1206 }
1207
1208 ptr = sep + 1;
1209 } while (sep);
1210
1211
1212 if (PSI_ContextCompile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
1213 C->error(NULL, PSI_WARNING, "Failed to register functions!");
1214 }
1215
1216 free(cpy);
1217
1218 }
1219
1220 zend_function_entry *PSI_ContextCompile(PSI_Context *C)
1221 {
1222 size_t i;
1223
1224 if (C->consts) {
1225 zend_constant zc;
1226
1227 zc.flags = CONST_PERSISTENT|CONST_CS;
1228 zc.module_number = EG(current_module)->module_number;
1229
1230 for (i = 0; i < C->consts->count; ++i) {
1231 constant *c = C->consts->list[i];
1232
1233 zc.name = zend_string_init(c->name + (c->name[0] == '\\'), strlen(c->name) - (c->name[0] == '\\'), 1);
1234 ZVAL_NEW_STR(&zc.value, zend_string_init(c->val->text, strlen(c->val->text), 1));
1235
1236 switch (c->type->type) {
1237 case PSI_T_BOOL:
1238 convert_to_boolean(&zc.value);
1239 break;
1240 case PSI_T_INT:
1241 convert_to_long(&zc.value);
1242 break;
1243 case PSI_T_FLOAT:
1244 convert_to_double(&zc.value);
1245 break;
1246 }
1247 zend_register_constant(&zc);
1248 }
1249 }
1250
1251 return C->closures = C->ops->compile(C);
1252 }
1253
1254
1255 void PSI_ContextCall(PSI_Context *C, decl_callinfo *decl_call, impl_vararg *va)
1256 {
1257 C->ops->call(C, decl_call, va);
1258 }
1259
1260 static inline void dump_decl_type(int fd, decl_type *t) {
1261 const char *pre;
1262
1263 switch (t->type) {
1264 case PSI_T_STRUCT:
1265 pre = "struct ";
1266 break;
1267 default:
1268 pre = "";
1269 }
1270 dprintf(fd, "%s%s", pre, t->name);
1271 }
1272 static inline void dump_decl_var(int fd, decl_var *v) {
1273 dprintf(fd, "%.*s%s", v->pointer_level-!!v->array_size, "**********", v->name);
1274 if (v->array_size) {
1275 dprintf(fd, "[%u]", v->array_size);
1276 }
1277 }
1278 static inline void dump_decl_arg(int fd, decl_arg *a) {
1279 dump_decl_type(fd, a->type);
1280 dprintf(fd, " ");
1281 dump_decl_var(fd, a->var);
1282 }
1283 static inline void dump_level(int fd, unsigned level) {
1284 dprintf(fd, "%.*s", level, "\t\t\t\t\t\t\t\t\t");
1285 }
1286 static inline void dump_num_exp(int fd, num_exp *exp) {
1287 while (exp) {
1288 switch (exp->t) {
1289 case PSI_T_NUMBER:
1290 dprintf(fd, "%s", exp->u.numb);
1291 break;
1292 case PSI_T_NSNAME:
1293 dprintf(fd, "%s", exp->u.cnst->name);
1294 break;
1295 case PSI_T_NAME:
1296 dump_decl_var(fd, exp->u.dvar);
1297 break;
1298 EMPTY_SWITCH_DEFAULT_CASE();
1299 }
1300 if (exp->operand) {
1301 char op;
1302
1303 switch (exp->operator) {
1304 case PSI_T_PLUS: op = '+'; break;
1305 case PSI_T_MINUS: op = '-'; break;
1306 case PSI_T_ASTERISK:op = '*'; break;
1307 case PSI_T_SLASH: op = '/'; break;
1308 EMPTY_SWITCH_DEFAULT_CASE();
1309 }
1310 dprintf(fd, " %c ", op);
1311 }
1312 exp = exp->operand;
1313 }
1314 }
1315 static inline void dump_impl_set_value(int fd, set_value *set, unsigned level) {
1316 size_t i;
1317
1318 if (level > 1) {
1319 /* only if not directly after `set ...` */
1320 dump_level(fd, level);
1321 }
1322 dprintf(fd, "%s(", set->func->name);
1323
1324 for (i = 0; i < set->vars->count; ++i) {
1325 decl_var *svar = set->vars->vars[i];
1326 if (i) {
1327 dprintf(fd, ", ");
1328 }
1329 dump_decl_var(fd, svar);
1330 }
1331 if (set->num) {
1332 dprintf(fd, ", ");
1333 dump_num_exp(fd, set->num);
1334 }
1335 if (set->inner) {
1336 dprintf(fd, ",\n");
1337 for (i = 0; i < set->count; ++i) {
1338 dump_impl_set_value(fd, set->inner[i], level+1);
1339 }
1340 /* only if inner stmts, i.e. with new lines, were dumped */
1341 dump_level(fd, level);
1342 }
1343 if (level > 1) {
1344 dprintf(fd, "),\n");
1345 } else {
1346 dprintf(fd, ");\n");
1347 }
1348 }
1349 void PSI_ContextDump(PSI_Context *C, int fd)
1350 {
1351 size_t i, j, k, l;
1352
1353 #ifdef HAVE_LIBJIT
1354 if (C->ops == PSI_Libjit()) {
1355 dprintf(fd, "// psi.engine=jit\n");
1356 }
1357 #endif
1358 #ifdef HAVE_LIBFFI
1359 if (C->ops == PSI_Libffi()) {
1360 dprintf(fd, "// psi.engine=ffi\n");
1361 }
1362 #endif
1363 dprintf(fd, "\n");
1364
1365 if (C->defs) {
1366 for (i = 0; i < C->defs->count; ++i) {
1367 decl_typedef *tdef = C->defs->list[i];
1368
1369 dprintf(fd, "typedef ");
1370 dump_decl_type(fd, tdef->type);
1371 dprintf(fd, " %s;\n", tdef->alias);
1372 }
1373 dprintf(fd, "\n");
1374 }
1375
1376 if (C->structs) {
1377 for (i = 0; i < C->structs->count; ++i) {
1378 decl_struct *strct = C->structs->list[i];
1379
1380 dprintf(fd, "struct %s::(%zu) {\n", strct->name, strct->size);
1381 if (strct->args) for (j = 0; j < strct->args->count; ++j) {
1382 decl_arg *sarg = strct->args->args[j];
1383
1384 dprintf(fd, "\t");
1385 dump_decl_arg(fd, sarg);
1386 dprintf(fd, "::(%zu, %zu);\n", sarg->layout->pos, sarg->layout->len);
1387 }
1388 dprintf(fd, "}\n");
1389 }
1390 dprintf(fd, "\n");
1391 }
1392 if (C->consts) {
1393 for (i = 0; i < C->consts->count; ++i) {
1394 constant *cnst = C->consts->list[i];
1395
1396 dprintf(fd, "const %s %s = ", cnst->type->name, cnst->name);
1397 if (cnst->val->type == PSI_T_QUOTED_STRING) {
1398 dprintf(fd, "\"%s\";\n", cnst->val->text);
1399 } else {
1400 dprintf(fd, "%s;\n", cnst->val->text);
1401 }
1402 }
1403 dprintf(fd, "\n");
1404 }
1405 if (C->decls) {
1406 for (i = 0; i < C->decls->count; ++i) {
1407 decl *decl = C->decls->list[i];
1408
1409 dprintf(fd, "%s ", decl->abi->convention);
1410 dump_decl_arg(fd, decl->func);
1411 dprintf(fd, "(");
1412 if (decl->args) {
1413 for (j = 0; j < decl->args->count; ++j) {
1414 if (j) {
1415 dprintf(fd, ", ");
1416 }
1417 dump_decl_arg(fd, decl->args->args[j]);
1418 }
1419 if (decl->args->varargs) {
1420 dprintf(fd, ", ...");
1421 }
1422 }
1423 dprintf(fd, ");\n");
1424 }
1425 dprintf(fd, "\n");
1426 }
1427 if (C->impls) {
1428 for (i = 0; i < C->impls->count; ++i) {
1429 impl *impl = C->impls->list[i];
1430
1431 dprintf(fd, "function %s(", impl->func->name);
1432 if (impl->func->args) {
1433 for (j = 0; j < impl->func->args->count; ++j) {
1434 impl_arg *iarg = impl->func->args->args[j];
1435
1436 dprintf(fd, "%s%s %s$%s",
1437 j ? ", " : "",
1438 iarg->type->name,
1439 iarg->var->reference ? "&" : "",
1440 iarg->var->name);
1441 if (iarg->def) {
1442 dprintf(fd, " = %s", iarg->def->text);
1443 }
1444 }
1445 if (impl->func->args->vararg.name) {
1446 impl_arg *vararg = impl->func->args->vararg.name;
1447
1448 dprintf(fd, ", %s %s...$%s",
1449 vararg->type->name,
1450 vararg->var->reference ? "&" : "",
1451 vararg->var->name);
1452 }
1453 }
1454 dprintf(fd, ") : %s%s {\n",
1455 impl->func->return_reference ? "&":"",
1456 impl->func->return_type->name);
1457 if (impl->stmts) {
1458 for (j = 0; j < impl->stmts->let.count; ++j) {
1459 let_stmt *let = impl->stmts->let.list[j];
1460
1461 dprintf(fd, "\tlet %s", let->var->name);
1462 if (let->val) {
1463 dprintf(fd, " = %s", let->val->flags.one.is_reference ? "&" : "");
1464 switch (let->val->kind) {
1465 case PSI_LET_NULL:
1466 dprintf(fd, "NULL");
1467 break;
1468 case PSI_LET_TMP:
1469 dump_decl_var(fd, let->val->data.var);
1470 break;
1471 case PSI_LET_CALLOC:
1472 dprintf(fd, "calloc(");
1473 dump_num_exp(fd, let->val->data.alloc->nmemb);
1474 dprintf(fd, ", ");
1475 dump_num_exp(fd, let->val->data.alloc->size);
1476 dprintf(fd, ")");
1477 break;
1478 case PSI_LET_FUNC:
1479 dprintf(fd, "%s($%s)", let->val->data.func->name,
1480 let->val->data.func->var->name);
1481 break;
1482
1483 EMPTY_SWITCH_DEFAULT_CASE();
1484 }
1485 dprintf(fd, ";\n");
1486 }
1487 }
1488 for (j = 0; j < impl->stmts->ret.count; ++j) {
1489 return_stmt *ret = impl->stmts->ret.list[j];
1490
1491 dprintf(fd, "\treturn ");
1492 dump_impl_set_value(fd, ret->set, 1);
1493 }
1494 for (j = 0; j < impl->stmts->set.count; ++j) {
1495 set_stmt *set = impl->stmts->set.list[j];
1496
1497 dprintf(fd, "\tset $%s = ", set->var->name);
1498 dump_impl_set_value(fd, set->val, 1);
1499 }
1500 for (j = 0; j < impl->stmts->fre.count; ++j) {
1501 free_stmt *fre = impl->stmts->fre.list[j];
1502
1503 dprintf(fd, "\tfree ");
1504 for (k = 0; k < fre->calls->count; ++k) {
1505 free_call *call = fre->calls->list[k];
1506
1507 if (k) {
1508 dprintf(fd, ", ");
1509 }
1510 dprintf(fd, "%s(", call->func);
1511 for (l = 0; l < call->vars->count; ++l) {
1512 decl_var *fvar = call->vars->vars[l];
1513
1514 dump_decl_var(fd, fvar);
1515 }
1516 dprintf(fd, ");\n");
1517 }
1518 }
1519 }
1520 dprintf(fd, "}\n");
1521 }
1522 dprintf(fd, "\n");
1523 }
1524 }
1525
1526 void PSI_ContextDtor(PSI_Context *C)
1527 {
1528 size_t i;
1529 zend_function_entry *zfe;
1530
1531 if (C->ops->dtor) {
1532 C->ops->dtor(C);
1533 }
1534
1535 free_decl_libs(&C->psi.libs);
1536
1537 if (C->data) {
1538 for (i = 0; i < C->count; ++i) {
1539 PSI_DataDtor(&C->data[i]);
1540 }
1541 free(C->data);
1542 }
1543
1544 if (C->closures) {
1545 for (zfe = C->closures; zfe->fname; ++zfe) {
1546 free((void *) zfe->arg_info);
1547 }
1548 free(C->closures);
1549 }
1550
1551 if (C->consts) {
1552 if (C->consts->list) {
1553 free(C->consts->list);
1554 }
1555 free(C->consts);
1556 }
1557 if (C->defs) {
1558 if (C->defs->list) {
1559 free(C->defs->list);
1560 }
1561 free(C->defs);
1562 }
1563 if (C->structs) {
1564 if (C->structs->list) {
1565 free(C->structs->list);
1566 }
1567 free(C->structs);
1568 }
1569 if (C->decls) {
1570 if (C->decls->list) {
1571 free(C->decls->list);
1572 }
1573 free(C->decls);
1574 }
1575 if (C->impls) {
1576 if (C->impls->list) {
1577 free(C->impls->list);
1578 }
1579 free(C->impls);
1580 }
1581
1582 memset(C, 0, sizeof(*C));
1583 }
1584
1585 void PSI_ContextFree(PSI_Context **C)
1586 {
1587 if (*C) {
1588 PSI_ContextDtor(*C);
1589 free(*C);
1590 *C = NULL;
1591 }
1592 }
PHP System Interface / POSIX Standard Interface