git.m6w6.name Git - m6w6/ext-psi/blob - src/context.c

   1 #include <sys/param.h>
   2 #include <dlfcn.h>
   3 #include <dirent.h>
   4 #include <fnmatch.h>
   5 #include <errno.h>
   6
   7 #ifdef HAVE_CONFIG_H
   8 # include "config.h"
   9 #endif
  10
  11 #include "php.h"
  12 #include "php_scandir.h"
  13 #include "php_psi.h"
  14 #include "context.h"
  15 #include "parser.h"
  16
  17 #define psi_predef_count(of) ((sizeof(psi_predef ##of## s)/sizeof(psi_predef ##of))-1)
  18 typedef struct psi_predef_type {
  19         token_t type_tag;
  20         const char *type_name;
  21         const char *alias;
  22 } psi_predef_type;
  23 static const psi_predef_type psi_predef_types[] = {
  24         PHP_PSI_TYPES{0}
  25 };
  26 #define psi_predef_type_count() psi_predef_count(_type)
  27
  28 typedef struct psi_predef_const {
  29         token_t type_tag;
  30         const char *type_name;
  31         const char *name;
  32         const char *val_text;
  33         token_t val_type_tag;
  34 } psi_predef_const;
  35 static const psi_predef_const psi_predef_consts[] = {
  36         PHP_PSI_CONSTS{0}
  37 };
  38 #define psi_predef_const_count() psi_predef_count(_const)
  39
  40 typedef struct psi_predef_struct_member {
  41         token_t type_tag;
  42         const char *type_name;
  43         const char *name;
  44         size_t off;
  45         size_t len;
  46         size_t pointer_level;
  47         size_t array_size;
  48 } psi_predef_struct_member;
  49 #define PSI_PREDEF_STRUCT_MEMBERS 32
  50 typedef struct psi_predef_struct {
  51         const char *name;
  52         size_t size;
  53         psi_predef_struct_member members[PSI_PREDEF_STRUCT_MEMBERS];
  54 } psi_predef_struct;
  55 static const psi_predef_struct psi_predef_structs[] = {
  56         PHP_PSI_STRUCTS{0}
  57 };
  58 #define psi_predef_struct_count() psi_predef_count(_struct)
  59
  60 static int validate_lib(PSI_Data *data, void **dlopened) {
  61         char lib[MAXPATHLEN];
  62         const char *ptr = data->psi.file.ln;
  63         size_t len;
  64
  65         if (!ptr) {
  66                 /* FIXME: assume stdlib */
  67                 return 1;
  68         } else if (!strchr(ptr, '/')) {
  69 #ifdef DARWIN
  70                 len = snprintf(lib, MAXPATHLEN, "lib%s.dylib", ptr);
  71 #else
  72                 len = snprintf(lib, MAXPATHLEN, "lib%s.so", ptr);
  73 #endif
  74                 if (MAXPATHLEN == len) {
  75                         data->error(PSI_WARNING, "Library name too long: '%s'", ptr);
  76                 }
  77                 lib[len] = 0;
  78                 ptr = lib;
  79         }
  80         if (!(*dlopened = dlopen(ptr, RTLD_LAZY|RTLD_LOCAL))) {
  81                 data->error(PSI_WARNING, "Could not open library '%s': %s.",
  82                                 data->psi.file.ln, dlerror());
  83                 return 0;
  84         }
  85         return 1;
  86 }
  87
  88 static inline int locate_decl_type_alias(decl_typedefs *defs, decl_type *type) {
  89         size_t i;
  90
  91         if (type->real) {
  92                 return 1;
  93         }
  94         for (i = 0; i < defs->count; ++i) {
  95                 if (!strcmp(defs->list[i]->alias, type->name)) {
  96                         type->real = defs->list[i]->type;
  97                         return 1;
  98                 }
  99         }
 100         return 0;
 101 }
 102 static inline int locate_decl_type_struct(decl_structs *structs, decl_type *type) {
 103         size_t i;
 104
 105         if (type->strct) {
 106                 return 1;
 107         }
 108         for (i = 0; i < structs->count; ++i) {
 109                 if (!strcmp(structs->list[i]->name, type->name)) {
 110                         type->strct = structs->list[i];
 111                         return 1;
 112                 }
 113         }
 114         return 0;
 115 }
 116
 117 static inline int validate_decl_type(PSI_Data *data, decl_type *type) {
 118         switch (type->type) {
 119         case PSI_T_NAME:
 120                 if (!data->defs || !locate_decl_type_alias(data->defs, type)) {
 121                         return 0;
 122                 }
 123                 return validate_decl_type(data, type->real);
 124         case PSI_T_STRUCT:
 125                 if (!data->structs || !locate_decl_type_struct(data->structs, type)) {
 126                         return 0;
 127                 }
 128                 break;
 129         }
 130         return 1;
 131 }
 132 static inline int validate_decl_typedef(PSI_Data *data, decl_typedef *def) {
 133         if (!validate_decl_type(data, def->type)) {
 134                 data->error(PSI_WARNING, "Type '%s' cannot be aliased to '%s'",
 135                         def->type->name, def->alias);
 136                 return 0;
 137         }
 138         /* FIXME: check def->alias */
 139         return 1;
 140 }
 141
 142 static inline int validate_constant(PSI_Data *data, constant *c) {
 143         /* FIXME */
 144         return 1;
 145 }
 146
 147 static inline int validate_decl_arg(PSI_Data *data, decl_arg *arg) {
 148         if (!validate_decl_type(data, arg->type)) {
 149                 data->error(PSI_WARNING, "Cannot use '%s' as type for '%s'",
 150                         arg->type->name, arg->var->name);
 151                 return 0;
 152         }
 153         return 1;
 154 }
 155
 156 static inline int validate_decl_struct(PSI_Data *data, decl_struct *s) {
 157         size_t i;
 158
 159         for (i = 0; i < s->args->count; ++i) {
 160                 if (!validate_decl_arg(data, s->args->args[i])) {
 161                         return 0;
 162                 }
 163         }
 164
 165         for (i = 0; i < s->args->count; ++i) {
 166                 decl_arg *darg = s->args->args[i];
 167
 168                 if (!validate_decl_arg(data, darg)) {
 169                         return 0;
 170                 }
 171
 172                 ZEND_ASSERT(!darg->var->arg);
 173                 darg->var->arg = darg;
 174
 175                 if (!darg->layout) {
 176                         token_t t;
 177
 178                         if (darg->var->pointer_level && (!darg->var->array_size || darg->var->pointer_level == 1)) {
 179                                 t = PSI_T_POINTER;
 180                         } else {
 181                                 t = real_decl_type(darg->type)->type;
 182                         }
 183
 184                         if (i) {
 185                                 decl_arg *last = s->args->args[i-1];
 186                                 darg->layout = init_decl_struct_layout(
 187                                                 psi_t_align(t, last->layout->pos + last->layout->len),
 188                                                 psi_t_size(t) * darg->var->array_size);
 189                         } else {
 190                                 darg->layout = init_decl_struct_layout(0, psi_t_size(t));
 191                         }
 192                 }
 193                 if (s->size < darg->layout->pos + darg->layout->len) {
 194                         s->size = darg->layout->pos + darg->layout->len;
 195                 }
 196         }
 197         return 1;
 198 }
 199
 200 static const char * const abi_ccs[] = {
 201                 "default", /* \                 */
 202                 "extern",  /*  > - all the same */
 203                 "cdecl",   /* /                 */
 204                 "stdcall",
 205                 "fastcall",
 206 };
 207 static inline int validate_decl_abi(PSI_Data *data, decl_abi *abi) {
 208         size_t i;
 209
 210         for (i = 0; i < sizeof(abi_ccs)/sizeof(char*); ++i) {
 211                 if (strcasecmp(abi->convention, abi_ccs[i])) {
 212                         return 1;
 213                 }
 214         }
 215         data->error(PSI_WARNING, "Invalid calling convention: '%s'", abi->convention);
 216         return 0;
 217 }
 218 static inline int validate_decl_func(PSI_Data *data, void *dl, decl *decl, decl_arg *func)
 219 {
 220         if (!strcmp(func->var->name, "dlsym")) {
 221                 data->error(PSI_WARNING, "Cannot dlsym dlsym (sic!)");
 222                 return 0;
 223         }
 224
 225         if (!validate_decl_arg(data, func)) {
 226                 return 0;
 227         }
 228 #ifndef RTLD_NEXT
 229 # define RTLD_NEXT ((void *) -1l)
 230 #endif
 231         decl->dlptr = dlsym(dl ?: RTLD_NEXT, func->var->name);
 232         if (!decl->dlptr) {
 233                 data->error(PSI_WARNING, "Failed to locate symbol '%s': %s",
 234                         func->var->name, dlerror());
 235         }
 236         return 1;
 237 }
 238
 239 static inline int validate_decl(PSI_Data *data, void *dl, decl *decl) {
 240         if (!validate_decl_abi(data, decl->abi)) {
 241                 return 0;
 242         }
 243         if (!validate_decl_func(data, dl, decl, decl->func)) {
 244                 return 0;
 245         }
 246         if (decl->args) {
 247                 size_t i;
 248
 249                 for (i = 0; i < decl->args->count; ++i) {
 250                         if (!validate_decl_arg(data, decl->args->args[i])) {
 251                                 return 0;
 252                         }
 253                 }
 254         }
 255         return 1;
 256 }
 257
 258 static inline decl *locate_impl_decl(decls *decls, return_stmt *ret) {
 259         size_t i;
 260
 261         for (i = 0; i < decls->count; ++i) {
 262                 if (!strcmp(decls->list[i]->func->var->name, ret->decl->name)) {
 263                         ret->decl->arg = decls->list[i]->func;
 264                         return decls->list[i];
 265                 }
 266         }
 267         return NULL;
 268 }
 269 static inline int validate_impl_ret_stmt(PSI_Data *data, impl *impl) {
 270         /* we must have exactly one ret stmt delcaring the native func to call */
 271         /* and which type cast to apply */
 272         if (impl->stmts->ret.count != 1) {
 273                 if (impl->stmts->ret.count > 1) {
 274                         data->error(PSI_WARNING, "Too many `return` statements for implmentation %s;"
 275                                         " found %zu, exactly one is needed",
 276                                         impl->func->name, impl->stmts->ret.count);
 277                 } else {
 278                         data->error(PSI_WARNING, "Missing `return` statement for implementation %s",
 279                                         impl->func->name);
 280                 }
 281                 return 0;
 282         }
 283         if (!(impl->decl = locate_impl_decl(data->decls, impl->stmts->ret.list[0]))) {
 284                 data->error(PSI_WARNING, "Missing declaration for implementation %s",
 285                                 impl->func->name);
 286                 return 0;
 287         }
 288
 289         return 1;
 290 }
 291 static inline int validate_impl_let_stmts(PSI_Data *data, impl *impl) {
 292         size_t i, j;
 293         /* we can have multiple let stmts */
 294         /* check that we have a let stmt for every decl arg */
 295         if (impl->decl->args) for (i = 0; i < impl->decl->args->count; ++i) {
 296                 decl_arg *darg = impl->decl->args->args[i];
 297                 int check = 0;
 298
 299                 for (j = 0; j < impl->stmts->let.count; ++j) {
 300                         let_stmt *let = impl->stmts->let.list[j];
 301
 302                         if (!strcmp(let->var->name, darg->var->name)) {
 303                                 darg->let = let;
 304                                 check = 1;
 305                                 break;
 306                         }
 307                 }
 308                 if (!check) {
 309                         data->error(PSI_WARNING, "Missing `let` statement for arg '%s %.*s%s'"
 310                                         " of declaration '%s' for implementation '%s'",
 311                                         darg->type->name, (int) darg->var->pointer_level, "*****",
 312                                         darg->var->name, impl->decl->func->var->name, impl->func->name);
 313                         return 0;
 314                 }
 315         }
 316         /* check that the let_value references a known variable or NULL */
 317         for (i = 0; i < impl->stmts->let.count; ++i) {
 318                 let_stmt *let = impl->stmts->let.list[i];
 319                 int check = 0;
 320
 321                 if (let->val && let->val->func && let->val->func->alloc) {
 322                         if (!validate_decl_type(data, let->val->func->alloc->type)) {
 323                                 data->error(PSI_WARNING, "Cannot use '%s' as type for calloc in `let` statement",
 324                                         let->val->func->alloc->type->name);
 325                                 return 0;
 326                         }
 327                 }
 328                 if (let->val && let->val->var) {
 329                         if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
 330                                 impl_arg *iarg = impl->func->args->args[j];
 331
 332                                 if (!strcmp(let->val->var->name, iarg->var->name)) {
 333                                         let->arg = iarg;
 334                                         check = 1;
 335                                         break;
 336                                 }
 337                         }
 338                         if (!check) {
 339                                 data->error(PSI_WARNING, "Unknown value '$%s' of `let` statement"
 340                                                 " for variable '%s' of implementation '%s'",
 341                                                 let->val->var->name, let->var->name, impl->func->name);
 342                                 return 0;
 343                         }
 344                 }
 345         }
 346         return 1;
 347 }
 348 static inline int validate_impl_set_stmts(PSI_Data *data, impl *impl) {
 349         size_t i, j, k;
 350         /* we can have any count of set stmts; processing out vars */
 351         /* check that set stmts reference known variables */
 352         for (i = 0; i < impl->stmts->set.count; ++i) {
 353                 set_stmt *set = impl->stmts->set.list[i];
 354                 int check = 0;
 355
 356                 if (impl->func->args) for (j = 0; j < impl->func->args->count; ++j) {
 357                         impl_arg *iarg = impl->func->args->args[j];
 358
 359                         if (!strcmp(set->var->name, iarg->var->name)) {
 360                                 set->arg = iarg;
 361                                 check = 1;
 362                                 break;
 363                         }
 364                 }
 365                 if (!check) {
 366                         data->error(PSI_WARNING, "Unknown variable '$%s' of `set` statement"
 367                                         " of implementation '%s'",
 368                                         set->var->name, impl->func->name);
 369                         return 0;
 370                 }
 371
 372                 for (j = 0; j < set->val->vars->count; ++j) {
 373                         decl_var *set_var = set->val->vars->vars[j];
 374
 375                         check = 0;
 376                         if (impl->decl->args) for (k = 0; k < impl->decl->args->count; ++k) {
 377                                 decl_arg *set_arg = impl->decl->args->args[k];
 378
 379                                 if (!strcmp(set_var->name, set_arg->var->name)) {
 380                                         check = 1;
 381                                         set_var->arg = set_arg;
 382                                         break;
 383                                 }
 384                         }
 385
 386                         if (!check) {
 387                                 data->error(PSI_WARNING, "Unknown value '%s' of `set` statement"
 388                                                 " for variable '$%s' of implementation '%s'",
 389                                                 set_var->name, set->arg->var->name, impl->func->name);
 390                                 return 0;
 391                         }
 392                 }
 393         }
 394         return 1;
 395 }
 396 static inline int validate_impl_free_stmts(PSI_Data *data, impl *impl) {
 397         size_t i, j, k;
 398         /* we can have any count of free stmts; freeing any out vars */
 399         for (i = 0; i < impl->stmts->fre.count; ++i) {
 400                 free_stmt *fre = impl->stmts->fre.list[i];
 401
 402                 for (j = 0; j < fre->vars->count; ++j) {
 403                         decl_var *free_var = fre->vars->vars[j];
 404                         int check = 0;
 405
 406                         if (!strcmp(free_var->name, impl->decl->func->var->name)) {
 407                                 continue;
 408                         }
 409                         if (impl->decl->args) for (k = 0; k < impl->decl->args->count; ++k) {
 410                                 decl_arg *free_arg = impl->decl->args->args[k];
 411
 412                                 if (!strcmp(free_var->name, free_arg->var->name)) {
 413                                         check = 1;
 414                                         free_var->arg = free_arg;
 415                                         break;
 416                                 }
 417                         }
 418
 419                         if (!check) {
 420                                 data->error(PSI_WARNING, "Unknown variable '%s' of `free` statement"
 421                                                 " of implementation '%s'",
 422                                                 free_var->name, impl->func->name);
 423                                 return 0;
 424                         }
 425                 }
 426         }
 427         return 1;
 428 }
 429 static inline int validate_impl_stmts(PSI_Data *data, impl *impl) {
 430         if (!impl->stmts) {
 431                 data->error(PSI_WARNING, "Missing body for implementation %s!",
 432                                 impl->func->name);
 433                 return 0;
 434         }
 435
 436         if (!validate_impl_ret_stmt(data, impl)) {
 437                 return 0;
 438         }
 439
 440         if (!validate_impl_let_stmts(data, impl)) {
 441                 return 0;
 442         }
 443         if (!validate_impl_set_stmts(data, impl)) {
 444                 return 0;
 445         }
 446         if (!validate_impl_free_stmts(data, impl)) {
 447                 return 0;
 448         }
 449
 450         return 1;
 451 }
 452
 453 PSI_Context *PSI_ContextInit(PSI_Context *C, PSI_ContextOps *ops, PSI_ContextErrorFunc error)
 454 {
 455         size_t i, j;
 456         PSI_Data T;
 457
 458         if (!C) {
 459                 C = malloc(sizeof(*C));
 460         }
 461         memset(C, 0, sizeof(*C));
 462
 463         C->error = error;
 464         C->ops = ops;
 465         ops->init(C);
 466
 467         /* build up predefs in a temporary PSI_Data for validation */
 468         memset(&T, 0, sizeof(T));
 469         T.error = error;
 470
 471         for (i = 0; i < psi_predef_type_count(); ++i) {
 472                 const psi_predef_type *pre = &psi_predef_types[i];
 473                 decl_type *type = init_decl_type(pre->type_tag, pre->type_name);
 474                 decl_typedef *def = init_decl_typedef(pre->alias, type);
 475
 476                 T.defs = add_decl_typedef(T.defs, def);
 477         }
 478         for (i = 0; i < psi_predef_const_count(); ++i) {
 479                 const psi_predef_const *pre = &psi_predef_consts[i];
 480                 impl_def_val *val = init_impl_def_val(pre->val_type_tag, pre->val_text);
 481                 const_type *type = init_const_type(pre->type_tag, pre->type_name);
 482                 constant *constant = init_constant(type, pre->name, val);
 483
 484                 T.consts = add_constant(T.consts, constant);
 485         }
 486         for (i = 0; i < psi_predef_struct_count(); ++i) {
 487                 const psi_predef_struct *pre = &psi_predef_structs[i];
 488                 decl_args *dargs = init_decl_args(NULL);
 489                 decl_struct *dstruct;
 490
 491                 for (j = 0; j < PSI_PREDEF_STRUCT_MEMBERS; ++j) {
 492                         const psi_predef_struct_member *member = &pre->members[j];
 493                         decl_type *type;
 494                         decl_var *dvar;
 495                         decl_arg *darg;
 496
 497                         if (!member->name) {
 498                                 break;
 499                         }
 500
 501                         type = init_decl_type(member->type_tag, member->type_name);
 502                         dvar = init_decl_var(member->name, member->pointer_level, member->array_size);
 503                         darg = init_decl_arg(type, dvar);
 504                         darg->layout = init_decl_struct_layout(member->off, member->len);
 505                         dargs = add_decl_arg(dargs, darg);
 506                 }
 507
 508                 dstruct = init_decl_struct(pre->name, dargs);
 509                 dstruct->size = pre->size;
 510                 T.structs = add_decl_struct(T.structs, dstruct);
 511         }
 512
 513         for (i = 0; i < psi_predef_type_count(); ++i) {
 514                 decl_typedef *def = T.defs->list[i];
 515
 516                 if (validate_decl_typedef(&T, def)) {
 517                         C->defs = add_decl_typedef(C->defs, def);
 518                 }
 519         }
 520
 521         for (i = 0; i < psi_predef_const_count(); ++i) {
 522                 constant *constant = T.consts->list[i];
 523
 524                 if (validate_constant(&T, constant)) {
 525                         C->consts = add_constant(C->consts, constant);
 526                 }
 527         }
 528
 529         for (i = 0; i < psi_predef_struct_count(); ++i) {
 530                 decl_struct *dstruct = T.structs->list[i];
 531
 532                 if (validate_decl_struct(&T, dstruct)) {
 533                         C->structs = add_decl_struct(C->structs, dstruct);
 534                 }
 535         }
 536
 537         C->count = 1;
 538         C->data = malloc(sizeof(*C->data));
 539         PSI_DataExchange(C->data, &T);
 540
 541         return C;
 542 }
 543
 544 int PSI_ContextValidate(PSI_Context *C, PSI_Parser *P)
 545 {
 546         PSI_Data *D;
 547         void *dlopened = NULL;
 548         size_t count = C->count++;
 549
 550         C->data = realloc(C->data, C->count * sizeof(*C->data));
 551         D = PSI_DataExchange(&C->data[count], PSI_DATA(P));
 552
 553         if (D->defs) {
 554                 size_t i;
 555
 556                 for (i = 0; i < D->defs->count; ++i) {
 557                         if (validate_decl_typedef(PSI_DATA(C), D->defs->list[i])) {
 558                                 C->defs = add_decl_typedef(C->defs, D->defs->list[i]);
 559                         }
 560                 }
 561         }
 562         if (D->structs) {
 563                 size_t i;
 564
 565                 for (i = 0; i < D->structs->count; ++i) {
 566                         if (validate_decl_struct(PSI_DATA(C), D->structs->list[i])) {
 567                                 C->structs = add_decl_struct(C->structs, D->structs->list[i]);
 568                         }
 569                 }
 570         }
 571         if (D->consts) {
 572                 size_t i;
 573
 574                 for (i = 0; i < D->consts->count; ++i) {
 575                         if (validate_constant(PSI_DATA(C), D->consts->list[i])) {
 576                                 C->consts = add_constant(C->consts, D->consts->list[i]);
 577                         }
 578                 }
 579         }
 580
 581         if (!validate_lib(D, &dlopened)) {
 582                 return 0;
 583         }
 584
 585         add_decl_lib(&C->psi.libs, dlopened);
 586
 587         if (D->decls) {
 588                 size_t i;
 589
 590                 for (i = 0; i < D->decls->count; ++i) {
 591                         if (validate_decl(PSI_DATA(C), dlopened, D->decls->list[i])) {
 592                                 C->decls = add_decl(C->decls, D->decls->list[i]);
 593                         }
 594                 }
 595         }
 596         if (D->impls) {
 597                 size_t i;
 598
 599                 for (i = 0; i < D->impls->count; ++i) {
 600                         if (validate_impl_stmts(PSI_DATA(C), D->impls->list[i])) {
 601                                 C->impls = add_impl(C->impls, D->impls->list[i]);
 602                         }
 603                 }
 604         }
 605
 606         return 1;
 607 }
 608
 609 static int psi_select_dirent(const struct dirent *entry)
 610 {
 611 #ifndef FNM_CASEFOLD
 612 #define FNM_CASEFOLD 0
 613 #endif
 614         return 0 == fnmatch("*.psi", entry->d_name, FNM_CASEFOLD);
 615 }
 616
 617 void PSI_ContextBuild(PSI_Context *C, const char *path)
 618 {
 619         int i, n;
 620         struct dirent **entries = NULL;
 621
 622         n = php_scandir(path, &entries, psi_select_dirent, alphasort);
 623
 624         if (n < 0) {
 625                 return;
 626         } else for (i = 0; i < n; ++i) {
 627                 char psi[MAXPATHLEN];
 628                 PSI_Parser P;
 629
 630                 if (MAXPATHLEN <= slprintf(psi, MAXPATHLEN, "%s/%s", path, entries[i]->d_name)) {
 631                         C->error(PSI_WARNING, "Path to PSI file too long: %s/%s",
 632                                 path, entries[i]->d_name);
 633                 }
 634                 if (!PSI_ParserInit(&P, psi, C->error, 0)) {
 635                         C->error(PSI_WARNING, "Failed to init PSI parser (%s): %s",
 636                                 psi, strerror(errno));
 637                         continue;
 638                 }
 639
 640                 while (-1 != PSI_ParserScan(&P)) {
 641                         PSI_ParserParse(&P, PSI_TokenAlloc(&P));
 642                 };
 643                 PSI_ParserParse(&P, NULL);
 644                 PSI_ContextValidate(C, &P);
 645                 PSI_ParserDtor(&P);
 646         }
 647
 648         if (PSI_ContextCompile(C) && SUCCESS != zend_register_functions(NULL, C->closures, NULL, MODULE_PERSISTENT)) {
 649                 C->error(PSI_WARNING, "Failed to register functions!");
 650         }
 651
 652         if (entries) {
 653                 for (i = 0; i < n; ++i) {
 654                         free(entries[i]);
 655                 }
 656                 free(entries);
 657         }
 658
 659 }
 660
 661 zend_function_entry *PSI_ContextCompile(PSI_Context *C)
 662 {
 663         size_t i;
 664
 665         if (C->consts) {
 666                 zend_constant zc;
 667
 668                 zc.flags = CONST_PERSISTENT|CONST_CS;
 669                 zc.module_number = EG(current_module)->module_number;
 670
 671                 for (i = 0; i < C->consts->count; ++i) {
 672                         constant *c = C->consts->list[i];
 673
 674                         zc.name = zend_string_init(c->name + (c->name[0] == '\\'), strlen(c->name) - (c->name[0] == '\\'), 1);
 675                         ZVAL_NEW_STR(&zc.value, zend_string_init(c->val->text, strlen(c->val->text), 1));
 676
 677                         switch (c->type->type) {
 678                         case PSI_T_BOOL:
 679                                 convert_to_boolean(&zc.value);
 680                                 break;
 681                         case PSI_T_INT:
 682                                 convert_to_long(&zc.value);
 683                                 break;
 684                         case PSI_T_FLOAT:
 685                                 convert_to_double(&zc.value);
 686                                 break;
 687                         }
 688                         zend_register_constant(&zc);
 689                 }
 690         }
 691
 692
 693         return C->closures = C->ops->compile(C);
 694 }
 695
 696 void PSI_ContextDtor(PSI_Context *C)
 697 {
 698         size_t i;
 699
 700         C->ops->dtor(C);
 701
 702         free_decl_libs(&C->psi.libs);
 703
 704         for (i = 0; i < C->count; ++i) {
 705                 PSI_DataDtor(&C->data[i]);
 706         }
 707
 708         free(C->data);
 709         free(C->closures);
 710
 711         if (C->consts) {
 712                 if (C->consts->list) {
 713                         free(C->consts->list);
 714                 }
 715                 free(C->consts);
 716         }
 717         if (C->defs) {
 718                 if (C->defs->list) {
 719                         free(C->defs->list);
 720                 }
 721                 free(C->defs);
 722         }
 723         if (C->structs) {
 724                 if (C->structs->list) {
 725                         free(C->structs->list);
 726                 }
 727                 free(C->structs);
 728         }
 729         if (C->decls) {
 730                 if (C->decls->list) {
 731                         free(C->decls->list);
 732                 }
 733                 free(C->decls);
 734         }
 735         if (C->impls) {
 736                 if (C->impls->list) {
 737                         free(C->impls->list);
 738                 }
 739                 free(C->impls);
 740         }
 741
 742         memset(C, 0, sizeof(*C));
 743 }
 744
 745 void PSI_ContextFree(PSI_Context **C)
 746 {
 747         if (*C) {
 748                 PSI_ContextDtor(*C);
 749                 free(*C);
 750                 *C = NULL;
 751         }
 752 }