git.m6w6.name Git - m6w6/ext-psi/blob - src/parser.h

   1 #ifndef _PSI_PARSER_H
   2 #define _PSI_PARSER_H
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <stdarg.h>
   7 #include <string.h>
   8
   9 #include <Zend/zend_types.h>
  10
  11 #include "parser_proc.h"
  12
  13 #define BSIZE 256
  14
  15 typedef int token_t;
  16
  17 /* in php_psi.h */
  18 size_t psi_t_alignment(token_t);
  19 size_t psi_t_size(token_t);
  20
  21 typedef struct PSI_Token {
  22         token_t type;
  23         unsigned line;
  24         size_t size;
  25         char text[1];
  26 } PSI_Token;
  27
  28 typedef struct decl_type {
  29         char *name;
  30         token_t type;
  31         struct decl_type *real;
  32         struct decl_struct *strct;
  33 } decl_type;
  34
  35 static inline decl_type *init_decl_type(token_t type, char *name) {
  36         decl_type *t = calloc(1, sizeof(*t));
  37         t->type = type;
  38         t->name = strdup(name);
  39         return t;
  40 }
  41
  42 static inline decl_type *real_decl_type(decl_type *type) {
  43         while (type->real) {
  44                 type = type->real;
  45         }
  46         return type;
  47 }
  48
  49 static inline void free_decl_type(decl_type *type) {
  50         free(type->name);
  51         free(type);
  52 }
  53
  54 typedef struct decl_typedef {
  55         char *alias;
  56         decl_type *type;
  57 } decl_typedef;
  58
  59 static inline decl_typedef *init_decl_typedef(char *name, decl_type *type) {
  60         decl_typedef *t = malloc(sizeof(*t));
  61         t->alias = strdup(name);
  62         t->type = type;
  63         return t;
  64 }
  65
  66 static inline void free_decl_typedef(decl_typedef *t) {
  67         free(t->alias);
  68         free_decl_type(t->type);
  69         free(t);
  70 }
  71
  72 typedef struct decl_typedefs {
  73         size_t count;
  74         decl_typedef **list;
  75 } decl_typedefs;
  76
  77 static inline decl_typedefs *add_decl_typedef(decl_typedefs *defs, decl_typedef *def) {
  78         if (!defs) {
  79                 defs = calloc(1, sizeof(*defs));
  80         }
  81         defs->list = realloc(defs->list, ++defs->count * sizeof(*defs->list));
  82         defs->list[defs->count-1] = def;
  83         return defs;
  84 }
  85
  86 static void free_decl_typedefs(decl_typedefs *defs) {
  87         size_t i;
  88
  89         for (i = 0; i < defs->count; ++i) {
  90                 free_decl_typedef(defs->list[i]);
  91         }
  92         free(defs->list);
  93         free(defs);
  94 }
  95
  96 typedef struct decl_var {
  97         char *name;
  98         unsigned pointer_level;
  99         unsigned array_size;
 100         struct decl_arg *arg;
 101 } decl_var;
 102
 103 static inline decl_var *init_decl_var(char *name, unsigned pl, unsigned as) {
 104         decl_var *v = malloc(sizeof(*v));
 105         v->name = (char *) strdup((const char *) name);
 106         v->pointer_level = pl;
 107         v->array_size = as;
 108         return v;
 109 }
 110
 111 static inline void free_decl_var(decl_var *var) {
 112         free(var->name);
 113         free(var);
 114 }
 115
 116 typedef struct decl_arg {
 117         decl_type *type;
 118         decl_var *var;
 119         struct let_stmt *let;
 120 } decl_arg;
 121
 122 static inline decl_arg *init_decl_arg(decl_type *type, decl_var *var) {
 123         decl_arg *arg = malloc(sizeof(*arg));
 124         arg->type = type;
 125         arg->var = var;
 126         arg->let = NULL;
 127         return arg;
 128 }
 129
 130 static inline void free_decl_arg(decl_arg *arg) {
 131         free_decl_type(arg->type);
 132         free_decl_var(arg->var);
 133         free(arg);
 134 }
 135
 136 typedef struct decl_vars {
 137         decl_var **vars;
 138         size_t count;
 139 } decl_vars;
 140
 141 static inline decl_vars *init_decl_vars(decl_var *var) {
 142         decl_vars *vars = malloc(sizeof(*vars));
 143         vars->count = 1;
 144         vars->vars = malloc(sizeof(*vars->vars));
 145         vars->vars[0] = var;
 146         return vars;
 147 }
 148
 149 static inline decl_vars *add_decl_var(decl_vars *vars, decl_var *var) {
 150         vars->vars = realloc(vars->vars, ++vars->count * sizeof(*vars->vars));
 151         vars->vars[vars->count-1] = var;
 152         return vars;
 153 }
 154
 155 static inline void free_decl_vars(decl_vars *vars) {
 156         size_t i;
 157
 158         for (i = 0; i < vars->count; ++i) {
 159                 free_decl_var(vars->vars[i]);
 160         }
 161         free(vars->vars);
 162         free(vars);
 163 }
 164
 165 typedef struct decl_args {
 166         decl_arg **args;
 167         size_t count;
 168 } decl_args;
 169
 170 static inline decl_args *init_decl_args(decl_arg *arg) {
 171         decl_args *args = malloc(sizeof(*args));
 172         args->count = 1;
 173         args->args = malloc(sizeof(*args->args));
 174         args->args[0] = arg;
 175         return args;
 176 }
 177
 178 static inline decl_args *add_decl_arg(decl_args *args, decl_arg *arg) {
 179         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 180         args->args[args->count-1] = arg;
 181         return args;
 182 }
 183
 184 static inline void free_decl_args(decl_args *args) {
 185         size_t i;
 186
 187         for (i = 0; i < args->count; ++i) {
 188                 free_decl_arg(args->args[i]);
 189         }
 190         free(args->args);
 191         free(args);
 192 }
 193
 194 typedef struct decl_abi {
 195         char *convention;
 196 } decl_abi;
 197
 198 static inline decl_abi *init_decl_abi(char *convention) {
 199         decl_abi *abi = malloc(sizeof(*abi));
 200         abi->convention = strdup(convention);
 201         return abi;
 202 }
 203
 204 static inline void free_decl_abi(decl_abi *abi) {
 205         free(abi->convention);
 206         free(abi);
 207 }
 208
 209 typedef struct decl {
 210         decl_abi *abi;
 211         decl_arg *func;
 212         decl_args *args;
 213         void *dlptr;
 214 } decl;
 215
 216 static inline decl* init_decl(decl_abi *abi, decl_arg *func, decl_args *args) {
 217         decl *d = malloc(sizeof(*d));
 218         d->abi = abi;
 219         d->func = func;
 220         d->args = args;
 221         return d;
 222 }
 223
 224 static inline void free_decl(decl *d) {
 225         free_decl_abi(d->abi);
 226         free_decl_arg(d->func);
 227         if (d->args) {
 228                 free_decl_args(d->args);
 229         }
 230         free(d);
 231 }
 232
 233 typedef struct decls {
 234         size_t count;
 235         decl **list;
 236 } decls;
 237
 238 static inline decls *add_decl(decls *decls, decl *decl) {
 239         if (!decls) {
 240                 decls = calloc(1, sizeof(*decls));
 241         }
 242         decls->list = realloc(decls->list, ++decls->count * sizeof(*decls->list));
 243         decls->list[decls->count-1] = decl;
 244         return decls;
 245 }
 246
 247 static inline void free_decls(decls *decls) {
 248         size_t i;
 249
 250         for (i = 0; i < decls->count; ++i) {
 251                 free_decl(decls->list[i]);
 252         }
 253         free(decls->list);
 254         free(decls);
 255 }
 256
 257 typedef struct decl_struct_layout {
 258         size_t pos;
 259         size_t len;
 260 } decl_struct_layout;
 261
 262 typedef struct decl_struct {
 263         char *name;
 264         decl_args *args;
 265         decl_struct_layout *layout;
 266 } decl_struct;
 267
 268 static inline decl_struct *init_decl_struct(char *name, decl_args *args) {
 269         decl_struct *s = calloc(1, sizeof(*s));
 270         s->name = strdup(name);
 271         s->args = args;
 272         return s;
 273 }
 274
 275 static inline void free_decl_struct(decl_struct *s) {
 276         if (s->args) {
 277                 free_decl_args(s->args);
 278         }
 279         free(s->name);
 280         free(s);
 281 }
 282
 283 static inline size_t decl_struct_size(decl_struct *s) {
 284         size_t c = s->args->count - 1;
 285         decl_type *type = real_decl_type(s->args->args[c]->type);
 286         return s->layout[c].pos + psi_t_alignment(type->type);
 287 }
 288
 289 typedef struct decl_structs {
 290         size_t count;
 291         decl_struct **list;
 292 } decl_structs;
 293
 294 static inline decl_structs *add_decl_struct(decl_structs *ss, decl_struct *s) {
 295         if (!ss) {
 296                 ss = calloc(1, sizeof(*ss));
 297         }
 298         ss->list = realloc(ss->list, ++ss->count * sizeof(*ss->list));
 299         ss->list[ss->count-1] = s;
 300         return ss;
 301 }
 302
 303 static inline void free_decl_structs(decl_structs *ss) {
 304         size_t i;
 305
 306         for (i = 0; i < ss->count; ++i) {
 307                 free_decl_struct(ss->list[i]);
 308         }
 309         free(ss->list);
 310         free(ss);
 311 }
 312
 313 typedef union impl_val {
 314         unsigned char bval;
 315         char cval;
 316         short sval;
 317         int ival;
 318         float fval;
 319         double dval;
 320         zend_long lval;
 321         zend_string *str;
 322         void *ptr;
 323 } impl_val;
 324
 325 static inline impl_val *deref_impl_val(unsigned level, impl_val *ret_val, decl_arg *darg) {
 326         unsigned i;
 327
 328         for (i = level; i < darg->var->pointer_level && ret_val->ptr; ++i) {
 329                 ret_val = *(void **)ret_val;
 330         }
 331         return ret_val;
 332 }
 333
 334 typedef struct impl_type {
 335         char *name;
 336         token_t type;
 337 } impl_type;
 338
 339 static inline impl_type *init_impl_type(token_t type, char *name) {
 340         impl_type *t = malloc(sizeof(*t));
 341
 342         t->type = type;
 343         t->name = (char *) strdup((const char *) name);
 344         return t;
 345 }
 346
 347 static inline void free_impl_type(impl_type *type) {
 348         free(type->name);
 349         free(type);
 350 }
 351
 352 typedef struct impl_var {
 353         char *name;
 354         unsigned reference:1;
 355 } impl_var;
 356
 357 static inline impl_var *init_impl_var(char *name, int is_reference) {
 358         impl_var *var = malloc(sizeof(*var));
 359         var->name = (char *) strdup((const char *) name);
 360         var->reference = is_reference;
 361         return var;
 362 }
 363
 364 static inline void free_impl_var(impl_var *var) {
 365         free(var->name);
 366         free(var);
 367 }
 368
 369 typedef struct impl_def_val {
 370         token_t type;
 371         char *text;
 372 } impl_def_val;
 373
 374 static inline impl_def_val *init_impl_def_val(PSI_Token *T) {
 375         impl_def_val *def = malloc(sizeof(*def));
 376         def->type = T->type;
 377         def->text = strdup(T->text);
 378         return def;
 379 }
 380
 381 static inline void free_impl_def_val(impl_def_val *def) {
 382         free(def->text);
 383         free(def);
 384 }
 385
 386 typedef struct impl_arg {
 387         impl_type *type;
 388         impl_var *var;
 389         impl_def_val *def;
 390         impl_val val;
 391         zval *_zv;
 392 } impl_arg;
 393
 394 static inline impl_arg *init_impl_arg(impl_type *type, impl_var *var, impl_def_val *def) {
 395         impl_arg *arg = malloc(sizeof(*arg));
 396         arg->type = type;
 397         arg->var = var;
 398         arg->def = def;
 399         return arg;
 400 }
 401
 402 static inline void free_impl_arg(impl_arg *arg) {
 403         free_impl_type(arg->type);
 404         free_impl_var(arg->var);
 405         if (arg->def) {
 406                 free_impl_def_val(arg->def);
 407         }
 408         free(arg);
 409 }
 410
 411 typedef struct impl_args {
 412         impl_arg **args;
 413         size_t count;
 414 } impl_args;
 415
 416 static inline impl_args *init_impl_args(impl_arg *arg) {
 417         impl_args *args = malloc(sizeof(*args));
 418         args->args = malloc(sizeof(*args->args));
 419         if (arg) {
 420                 args->count = 1;
 421                 args->args[0] = arg;
 422         } else {
 423                 args->count = 0;
 424                 args->args = NULL;
 425         }
 426         return args;
 427 }
 428
 429 static inline impl_args *add_impl_arg(impl_args *args, impl_arg *arg) {
 430         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 431         args->args[args->count-1] = arg;
 432         return args;
 433 }
 434
 435 static inline void free_impl_args(impl_args *args) {
 436         size_t i;
 437
 438         for (i = 0; i < args->count; ++i) {
 439                 free_impl_arg(args->args[i]);
 440         }
 441         free(args->args);
 442         free(args);
 443 }
 444
 445 typedef struct impl_func {
 446         char *name;
 447         impl_args *args;
 448         impl_type *return_type;
 449         unsigned return_reference:1;
 450 } impl_func;
 451
 452 static inline impl_func *init_impl_func(char *name, impl_args *args, impl_type *type, int ret_reference) {
 453         impl_func *func = malloc(sizeof(*func));
 454         func->name = strdup(name);
 455         func->args = args ? args : init_impl_args(NULL);
 456         func->return_type = type;
 457         func->return_reference = ret_reference;
 458         return func;
 459 }
 460
 461 static inline void free_impl_func(impl_func *f) {
 462         free_impl_type(f->return_type);
 463         free_impl_args(f->args);
 464         free(f->name);
 465         free(f);
 466 }
 467
 468 typedef struct let_func {
 469         token_t type;
 470         char *name;
 471         size_t size;
 472 } let_func;
 473
 474 static inline let_func *init_let_func(token_t type, char *name, size_t size) {
 475         let_func *func = malloc(sizeof(*func));
 476         func->type = type;
 477         func->name = strdup(name);
 478         func->size = size;
 479         return func;
 480 }
 481
 482 static inline void free_let_func(let_func *func) {
 483         free(func->name);
 484         free(func);
 485 }
 486
 487 typedef struct let_value {
 488         let_func *func;
 489         impl_var *var;
 490         unsigned is_reference:1;
 491 } let_value;
 492
 493 static inline let_value *init_let_value(let_func *func, impl_var *var, int is_reference) {
 494         let_value *val = malloc(sizeof(*val));
 495         val->is_reference = is_reference;
 496         val->func = func;
 497         val->var = var;
 498         return val;
 499 }
 500
 501 static inline void free_let_value(let_value *val) {
 502         if (val->func) {
 503                 free_let_func(val->func);
 504         }
 505         if (val->var) {
 506                 free_impl_var(val->var);
 507         }
 508         free(val);
 509 }
 510
 511 typedef struct let_stmt {
 512         decl_var *var;
 513         let_value *val;
 514         impl_arg *arg;
 515         impl_val out;
 516         void *ptr;
 517         void *mem;
 518 } let_stmt;
 519
 520 static inline let_stmt *init_let_stmt(decl_var *var, let_value *val) {
 521         let_stmt *let = calloc(1, sizeof(*let));
 522         let->var = var;
 523         let->val = val;
 524         return let;
 525 }
 526
 527 static inline void free_let_stmt(let_stmt *stmt) {
 528         free_decl_var(stmt->var);
 529         if (stmt->val) {
 530                 free_let_value(stmt->val);
 531         }
 532         free(stmt);
 533 }
 534
 535 typedef struct set_func {
 536         token_t type;
 537         char *name;
 538 } set_func;
 539
 540 static inline set_func *init_set_func(token_t type, char *name) {
 541         set_func *func = malloc(sizeof(*func));
 542         func->type = type;
 543         func->name = (char *) strdup((const char *) name);
 544         return func;
 545 }
 546
 547 static inline void free_set_func(set_func *func) {
 548         free(func->name);
 549         free(func);
 550 }
 551
 552 typedef struct set_value {
 553         set_func *func;
 554         decl_vars *vars;
 555 } set_value;
 556
 557 static inline set_value *init_set_value(set_func *func, decl_vars *vars) {
 558         set_value *val = malloc(sizeof(*val));
 559         val->func = func;
 560         val->vars = vars;
 561         return val;
 562 }
 563
 564 static inline void free_set_value(set_value *val) {
 565         free_set_func(val->func);
 566         free_decl_vars(val->vars);
 567         free(val);
 568 }
 569
 570 typedef struct set_stmt {
 571         impl_var *var;
 572         set_value *val;
 573         impl_arg *arg;
 574 } set_stmt;
 575
 576 static inline set_stmt *init_set_stmt(impl_var *var, set_value *val) {
 577         set_stmt *set = malloc(sizeof(*set));
 578         set->var = var;
 579         set->val = val;
 580         return set;
 581 }
 582
 583 static inline void free_set_stmt(set_stmt *set) {
 584         free_impl_var(set->var);
 585         free_set_value(set->val);
 586         free(set);
 587 }
 588
 589 typedef struct return_stmt {
 590         set_func *func;
 591         decl_var *decl;
 592 } return_stmt;
 593
 594 static inline return_stmt *init_return_stmt(set_func *func, decl_var *decl) {
 595         return_stmt *ret = malloc(sizeof(*ret));
 596         ret->func = func;
 597         ret->decl = decl;
 598         return ret;
 599 }
 600
 601 static inline void free_return_stmt(return_stmt *ret) {
 602         free_set_func(ret->func);
 603         free_decl_var(ret->decl);
 604         free(ret);
 605 }
 606
 607 typedef struct free_stmt {
 608         decl_vars *vars;
 609 } free_stmt;
 610
 611 static inline free_stmt *init_free_stmt(decl_vars *vars) {
 612         free_stmt *free_ = malloc(sizeof(*free_));
 613         free_->vars = vars;
 614         return free_;
 615 }
 616
 617 static inline void free_free_stmt(free_stmt *free_) {
 618         free_decl_vars(free_->vars);
 619         free(free_);
 620 }
 621
 622 typedef struct impl_stmt {
 623         token_t type;
 624         union {
 625                 let_stmt *let;
 626                 set_stmt *set;
 627                 return_stmt *ret;
 628                 free_stmt *fre;
 629                 void *ptr;
 630         } s;
 631 } impl_stmt;
 632
 633 static inline impl_stmt *init_impl_stmt(token_t type, void *ptr) {
 634         impl_stmt *stmt = malloc(sizeof(*stmt));
 635         stmt->type = type;
 636         stmt->s.ptr = ptr;
 637         return stmt;
 638 }
 639
 640 static inline void free_impl_stmt(impl_stmt *stmt) {
 641         switch (stmt->type) {
 642         case PSI_T_LET:
 643                 free_let_stmt(stmt->s.let);
 644                 break;
 645         case PSI_T_SET:
 646                 free_set_stmt(stmt->s.set);
 647                 break;
 648         case PSI_T_RETURN:
 649                 free_return_stmt(stmt->s.ret);
 650                 break;
 651         case PSI_T_FREE:
 652                 free_free_stmt(stmt->s.fre);
 653                 break;
 654         }
 655         free(stmt);
 656 }
 657
 658 typedef struct impl_stmts {
 659         struct {
 660                 return_stmt **list;
 661                 size_t count;
 662         } ret;
 663         struct {
 664                 let_stmt **list;
 665                 size_t count;
 666         } let;
 667         struct {
 668                 set_stmt **list;
 669                 size_t count;
 670         } set;
 671         struct {
 672                 free_stmt **list;
 673                 size_t count;
 674         } fre;
 675 } impl_stmts;
 676
 677 static inline void *add_impl_stmt_ex(void *list, size_t count, void *stmt) {
 678         list = realloc(list, count * sizeof(list));
 679         ((void **)list)[count-1] = stmt;
 680         return list;
 681 }
 682
 683 static inline impl_stmts *add_impl_stmt(impl_stmts *stmts, impl_stmt *stmt) {
 684         switch (stmt->type) {
 685         case PSI_T_RETURN:
 686                 stmts->ret.list = add_impl_stmt_ex(stmts->ret.list, ++stmts->ret.count, stmt->s.ret);
 687                 break;
 688         case PSI_T_LET:
 689                 stmts->let.list = add_impl_stmt_ex(stmts->let.list, ++stmts->let.count, stmt->s.let);
 690                 break;
 691         case PSI_T_SET:
 692                 stmts->set.list = add_impl_stmt_ex(stmts->set.list, ++stmts->set.count, stmt->s.set);
 693                 break;
 694         case PSI_T_FREE:
 695                 stmts->fre.list = add_impl_stmt_ex(stmts->fre.list, ++stmts->fre.count, stmt->s.fre);
 696                 break;
 697         }
 698         free(stmt);
 699         return stmts;
 700 }
 701
 702 static inline impl_stmts *init_impl_stmts(impl_stmt *stmt) {
 703         impl_stmts *stmts = calloc(1, sizeof(*stmts));
 704         return add_impl_stmt(stmts, stmt);
 705 }
 706
 707 static inline void free_impl_stmts(impl_stmts *stmts) {
 708         size_t i;
 709
 710         for (i = 0; i < stmts->let.count; ++i) {
 711                 free_let_stmt(stmts->let.list[i]);
 712         }
 713         free(stmts->let.list);
 714         for (i = 0; i < stmts->ret.count; ++i) {
 715                 free_return_stmt(stmts->ret.list[i]);
 716         }
 717         free(stmts->ret.list);
 718         for (i = 0; i < stmts->set.count; ++i) {
 719                 free_set_stmt(stmts->set.list[i]);
 720         }
 721         free(stmts->set.list);
 722         for (i = 0; i < stmts->fre.count; ++i) {
 723                 free_free_stmt(stmts->fre.list[i]);
 724         }
 725         free(stmts->fre.list);
 726         free(stmts);
 727 }
 728
 729 typedef struct impl {
 730         impl_func *func;
 731         impl_stmts *stmts;
 732         decl *decl;
 733 } impl;
 734
 735 static inline impl *init_impl(impl_func *func, impl_stmts *stmts) {
 736         impl *i = malloc(sizeof(*i));
 737         i->func = func;
 738         i->stmts = stmts;
 739         return i;
 740 }
 741
 742 static inline void free_impl(impl *impl) {
 743         free_impl_func(impl->func);
 744         free_impl_stmts(impl->stmts);
 745         free(impl);
 746 }
 747
 748 typedef struct impls {
 749         size_t count;
 750         impl **list;
 751 } impls;
 752
 753 static inline impls *add_impl(impls *impls, impl *impl) {
 754         if (!impls) {
 755                 impls = calloc(1, sizeof(*impls));
 756         }
 757         impls->list = realloc(impls->list, ++impls->count * sizeof(*impls->list));
 758         impls->list[impls->count-1] = impl;
 759         return impls;
 760 }
 761
 762 static void free_impls(impls *impls) {
 763         size_t i;
 764
 765         for (i = 0; i < impls->count; ++i) {
 766                 free_impl(impls->list[i]);
 767         }
 768         free(impls->list);
 769         free(impls);
 770 }
 771
 772 typedef struct const_type {
 773         token_t type;
 774         char *name;
 775 } const_type;
 776
 777 static inline const_type *init_const_type(token_t type, const char *name) {
 778         const_type *ct = malloc(sizeof(*ct));
 779         ct->type = type;
 780         ct->name = strdup(name);
 781         return ct;
 782 }
 783
 784 static inline void free_const_type(const_type *type) {
 785         free(type->name);
 786         free(type);
 787 }
 788
 789 typedef struct constant {
 790         const_type *type;
 791         char *name;
 792         impl_def_val *val;
 793 } constant;
 794
 795 static inline constant *init_constant(const_type *type, char *name, impl_def_val *val) {
 796         constant *c = malloc(sizeof(*c));
 797         c->type = type;
 798         c->name = strdup(name);
 799         c->val = val;
 800         return c;
 801 }
 802
 803 static inline void free_constant(constant *constant) {
 804         free_const_type(constant->type);
 805         free(constant->name);
 806         free_impl_def_val(constant->val);
 807         free(constant);
 808 }
 809
 810 typedef struct constants {
 811         size_t count;
 812         constant **list;
 813 } constants;
 814
 815 static inline constants *add_constant(constants *constants, constant *constant) {
 816         if (!constants) {
 817                 constants = calloc(1, sizeof(*constants));
 818         }
 819         constants->list = realloc(constants->list, ++constants->count * sizeof(*constants->list));
 820         constants->list[constants->count-1] = constant;
 821         return constants;
 822 }
 823
 824 static inline void free_constants(constants *c) {
 825         size_t i;
 826
 827         for (i = 0; i < c->count; ++i) {
 828                 free_constant(c->list[i]);
 829         }
 830         free(c->list);
 831         free(c);
 832 }
 833
 834 #define PSI_ERROR 16
 835 #define PSI_WARNING 32
 836 typedef void (*psi_error_cb)(int type, const char *msg, ...);
 837
 838 #define PSI_DATA_MEMBERS \
 839         constants *consts; \
 840         decl_typedefs *defs; \
 841         decl_structs *structs; \
 842         decls *decls; \
 843         impls *impls; \
 844         char *lib; \
 845         char *fn; \
 846         psi_error_cb error
 847 typedef struct PSI_Data {
 848         PSI_DATA_MEMBERS;
 849 } PSI_Data;
 850
 851 static inline void PSI_DataExchange(PSI_Data *dest, PSI_Data *src) {
 852         memcpy(dest, src, sizeof(*dest));
 853         memset(src, 0, sizeof(*src));
 854 }
 855
 856 static inline void PSI_DataDtor(PSI_Data *data) {
 857         if (data->consts) {
 858                 free_constants(data->consts);
 859         }
 860         if (data->defs) {
 861                 free_decl_typedefs(data->defs);
 862         }
 863         if (data->structs) {
 864                 free_decl_structs(data->structs);
 865         }
 866         if (data->decls) {
 867                 free_decls(data->decls);
 868         }
 869         if (data->impls) {
 870                 free_impls(data->impls);
 871         }
 872         if (data->lib) {
 873                 free(data->lib);
 874         }
 875         if (data->fn) {
 876                 free(data->fn);
 877         }
 878 }
 879
 880 typedef struct PSI_Parser {
 881         PSI_DATA_MEMBERS;
 882         FILE *fp;
 883         unsigned flags;
 884         unsigned errors;
 885         void *proc;
 886         size_t line;
 887         token_t num;
 888         char *cur, *tok, *lim, *eof, *ctx, *mrk, buf[BSIZE];
 889 } PSI_Parser;
 890
 891 static inline PSI_Token *PSI_TokenAlloc(PSI_Parser *P) {
 892         PSI_Token *T;
 893         size_t token_len;
 894
 895         if (P->cur <= P->tok) {
 896                 return NULL;
 897         }
 898
 899         token_len = P->cur - P->tok;
 900
 901         T = malloc(sizeof(*T) + token_len);
 902         T->type = P->num;
 903         T->line = P->line;
 904         T->size = token_len;
 905         T->text[token_len] = 0;
 906         memcpy(T->text, P->tok, token_len);
 907
 908         return T;
 909 }
 910
 911 #define PSI_PARSER_DEBUG 0x1
 912
 913 PSI_Parser *PSI_ParserInit(PSI_Parser *P, const char *filename, psi_error_cb error, unsigned flags);
 914 void PSI_ParserSyntaxError(PSI_Parser *P, const char *fn, size_t ln, const char *msg, ...);
 915 size_t PSI_ParserFill(PSI_Parser *P, size_t n);
 916 token_t PSI_ParserScan(PSI_Parser *P);
 917 void PSI_ParserParse(PSI_Parser *P, PSI_Token *T);
 918 void PSI_ParserDtor(PSI_Parser *P);
 919 void PSI_ParserFree(PSI_Parser **P);
 920
 921 #endif