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, const 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(const char *name, decl_type *type) {
  60         decl_typedef *t = calloc(1, 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(const char *name, unsigned pl, unsigned as) {
 104         decl_var *v = calloc(1, 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_struct_layout {
 117         size_t pos;
 118         size_t len;
 119 } decl_struct_layout;
 120
 121 static inline decl_struct_layout *init_decl_struct_layout(size_t pos, size_t len) {
 122         decl_struct_layout *l = calloc(1, sizeof(*l));
 123
 124         l->pos = pos;
 125         l->len = len;
 126         return l;
 127 }
 128
 129 static inline void free_decl_struct_layout(decl_struct_layout *l) {
 130         free(l);
 131 }
 132
 133 typedef struct decl_arg {
 134         decl_type *type;
 135         decl_var *var;
 136         decl_struct_layout *layout;
 137         struct let_stmt *let;
 138 } decl_arg;
 139
 140 static inline decl_arg *init_decl_arg(decl_type *type, decl_var *var) {
 141         decl_arg *arg = calloc(1, sizeof(*arg));
 142         arg->type = type;
 143         arg->var = var;
 144         return arg;
 145 }
 146
 147 static inline void free_decl_arg(decl_arg *arg) {
 148         free_decl_type(arg->type);
 149         free_decl_var(arg->var);
 150         if (arg->layout) {
 151                 free_decl_struct_layout(arg->layout);
 152         }
 153         free(arg);
 154 }
 155
 156 typedef struct decl_vars {
 157         decl_var **vars;
 158         size_t count;
 159 } decl_vars;
 160
 161 static inline decl_vars *init_decl_vars(decl_var *var) {
 162         decl_vars *vars = calloc(1, sizeof(*vars));
 163         if (var) {
 164                 vars->count = 1;
 165                 vars->vars = calloc(1, sizeof(*vars->vars));
 166                 vars->vars[0] = var;
 167         }
 168         return vars;
 169 }
 170
 171 static inline decl_vars *add_decl_var(decl_vars *vars, decl_var *var) {
 172         vars->vars = realloc(vars->vars, ++vars->count * sizeof(*vars->vars));
 173         vars->vars[vars->count-1] = var;
 174         return vars;
 175 }
 176
 177 static inline void free_decl_vars(decl_vars *vars) {
 178         size_t i;
 179
 180         for (i = 0; i < vars->count; ++i) {
 181                 free_decl_var(vars->vars[i]);
 182         }
 183         free(vars->vars);
 184         free(vars);
 185 }
 186
 187 typedef struct decl_args {
 188         decl_arg **args;
 189         size_t count;
 190 } decl_args;
 191
 192 static inline decl_args *init_decl_args(decl_arg *arg) {
 193         decl_args *args = calloc(1, sizeof(*args));
 194         if (arg) {
 195                 args->count = 1;
 196                 args->args = calloc(1, sizeof(*args->args));
 197                 args->args[0] = arg;
 198         }
 199         return args;
 200 }
 201
 202 static inline decl_args *add_decl_arg(decl_args *args, decl_arg *arg) {
 203         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 204         args->args[args->count-1] = arg;
 205         return args;
 206 }
 207
 208 static inline void free_decl_args(decl_args *args) {
 209         size_t i;
 210
 211         for (i = 0; i < args->count; ++i) {
 212                 free_decl_arg(args->args[i]);
 213         }
 214         free(args->args);
 215         free(args);
 216 }
 217
 218 typedef struct decl_abi {
 219         char *convention;
 220 } decl_abi;
 221
 222 static inline decl_abi *init_decl_abi(const char *convention) {
 223         decl_abi *abi = calloc(1, sizeof(*abi));
 224         abi->convention = strdup(convention);
 225         return abi;
 226 }
 227
 228 static inline void free_decl_abi(decl_abi *abi) {
 229         free(abi->convention);
 230         free(abi);
 231 }
 232
 233 typedef struct decl {
 234         decl_abi *abi;
 235         decl_arg *func;
 236         decl_args *args;
 237         void *dlptr;
 238 } decl;
 239
 240 static inline decl* init_decl(decl_abi *abi, decl_arg *func, decl_args *args) {
 241         decl *d = calloc(1, sizeof(*d));
 242         d->abi = abi;
 243         d->func = func;
 244         d->args = args;
 245         return d;
 246 }
 247
 248 static inline void free_decl(decl *d) {
 249         free_decl_abi(d->abi);
 250         free_decl_arg(d->func);
 251         if (d->args) {
 252                 free_decl_args(d->args);
 253         }
 254         free(d);
 255 }
 256
 257 typedef struct decls {
 258         size_t count;
 259         decl **list;
 260 } decls;
 261
 262 static inline decls *add_decl(decls *decls, decl *decl) {
 263         if (!decls) {
 264                 decls = calloc(1, sizeof(*decls));
 265         }
 266         decls->list = realloc(decls->list, ++decls->count * sizeof(*decls->list));
 267         decls->list[decls->count-1] = decl;
 268         return decls;
 269 }
 270
 271 static inline void free_decls(decls *decls) {
 272         size_t i;
 273
 274         for (i = 0; i < decls->count; ++i) {
 275                 free_decl(decls->list[i]);
 276         }
 277         free(decls->list);
 278         free(decls);
 279 }
 280
 281 typedef struct decl_struct {
 282         char *name;
 283         decl_args *args;
 284         size_t size;
 285 } decl_struct;
 286
 287 static inline decl_struct *init_decl_struct(const char *name, decl_args *args) {
 288         decl_struct *s = calloc(1, sizeof(*s));
 289         s->name = strdup(name);
 290         s->args = args;
 291         return s;
 292 }
 293
 294 static inline void free_decl_struct(decl_struct *s) {
 295         if (s->args) {
 296                 free_decl_args(s->args);
 297         }
 298         free(s->name);
 299         free(s);
 300 }
 301
 302 typedef struct decl_structs {
 303         size_t count;
 304         decl_struct **list;
 305 } decl_structs;
 306
 307 static inline decl_structs *add_decl_struct(decl_structs *ss, decl_struct *s) {
 308         if (!ss) {
 309                 ss = calloc(1, sizeof(*ss));
 310         }
 311         ss->list = realloc(ss->list, ++ss->count * sizeof(*ss->list));
 312         ss->list[ss->count-1] = s;
 313         return ss;
 314 }
 315
 316 static inline void free_decl_structs(decl_structs *ss) {
 317         size_t i;
 318
 319         for (i = 0; i < ss->count; ++i) {
 320                 free_decl_struct(ss->list[i]);
 321         }
 322         free(ss->list);
 323         free(ss);
 324 }
 325
 326 typedef union impl_val {
 327         char cval;
 328         int8_t i8;
 329         short sval;
 330         int16_t i16;
 331         int ival;
 332         int32_t i32;
 333         long lval;
 334         int64_t i64;
 335         float fval;
 336         double dval;
 337         union {
 338                 zend_bool bval;
 339                 zend_long lval;
 340                 zend_string *str;
 341         } zend;
 342         void *ptr;
 343         uint8_t _dbg[sizeof(void *)];
 344 } impl_val;
 345
 346 static inline impl_val *deref_impl_val(impl_val *ret_val, decl_var *var) {
 347         unsigned i;
 348
 349         if (var->arg->var != var) for (i = 0; i < var->pointer_level; ++i) {
 350                 ret_val = *(void **) ret_val;
 351         }
 352         return ret_val;
 353 }
 354
 355 static inline impl_val *enref_impl_val(void *ptr, decl_var *var) {
 356         impl_val *val, *val_ptr;
 357         unsigned i;
 358
 359         if (!var->pointer_level && real_decl_type(var->arg->type)->type != PSI_T_STRUCT) {
 360                 return ptr;
 361         }
 362         val = val_ptr = calloc(var->pointer_level, sizeof(void *));
 363         for (i = 1; i < var->pointer_level; ++i) {
 364                 val_ptr->ptr = (void **) val_ptr + 1;
 365                 val_ptr = val_ptr->ptr;
 366         }
 367         val_ptr->ptr = ptr;
 368         return val;
 369 }
 370 typedef struct impl_type {
 371         char *name;
 372         token_t type;
 373 } impl_type;
 374
 375 static inline impl_type *init_impl_type(token_t type, const char *name) {
 376         impl_type *t = calloc(1, sizeof(*t));
 377
 378         t->type = type;
 379         t->name = strdup(name);
 380         return t;
 381 }
 382
 383 static inline void free_impl_type(impl_type *type) {
 384         free(type->name);
 385         free(type);
 386 }
 387
 388 typedef struct impl_var {
 389         char *name;
 390         unsigned reference:1;
 391 } impl_var;
 392
 393 static inline impl_var *init_impl_var(const char *name, int is_reference) {
 394         impl_var *var = calloc(1, sizeof(*var));
 395         var->name = strdup(name);
 396         var->reference = is_reference;
 397         return var;
 398 }
 399
 400 static inline void free_impl_var(impl_var *var) {
 401         free(var->name);
 402         free(var);
 403 }
 404
 405 typedef struct impl_def_val {
 406         token_t type;
 407         char *text;
 408 } impl_def_val;
 409
 410 static inline impl_def_val *init_impl_def_val(token_t t, const char *text) {
 411         impl_def_val *def = calloc(1, sizeof(*def));
 412         def->type = t;
 413         def->text = strdup(text);
 414         return def;
 415 }
 416
 417 static inline void free_impl_def_val(impl_def_val *def) {
 418         free(def->text);
 419         free(def);
 420 }
 421
 422 typedef struct impl_arg {
 423         impl_type *type;
 424         impl_var *var;
 425         impl_def_val *def;
 426         impl_val val;
 427         zval *_zv;
 428 } impl_arg;
 429
 430 static inline impl_arg *init_impl_arg(impl_type *type, impl_var *var, impl_def_val *def) {
 431         impl_arg *arg = calloc(1, sizeof(*arg));
 432         arg->type = type;
 433         arg->var = var;
 434         arg->def = def;
 435         return arg;
 436 }
 437
 438 static inline void free_impl_arg(impl_arg *arg) {
 439         free_impl_type(arg->type);
 440         free_impl_var(arg->var);
 441         if (arg->def) {
 442                 free_impl_def_val(arg->def);
 443         }
 444         free(arg);
 445 }
 446
 447 typedef struct impl_args {
 448         impl_arg **args;
 449         size_t count;
 450 } impl_args;
 451
 452 static inline impl_args *init_impl_args(impl_arg *arg) {
 453         impl_args *args = calloc(1, sizeof(*args));
 454         if (arg) {
 455                 args->count = 1;
 456                 args->args = calloc(1, sizeof(*args->args));
 457                 args->args[0] = arg;
 458         }
 459         return args;
 460 }
 461
 462 static inline impl_args *add_impl_arg(impl_args *args, impl_arg *arg) {
 463         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 464         args->args[args->count-1] = arg;
 465         return args;
 466 }
 467
 468 static inline void free_impl_args(impl_args *args) {
 469         size_t i;
 470
 471         for (i = 0; i < args->count; ++i) {
 472                 free_impl_arg(args->args[i]);
 473         }
 474         free(args->args);
 475         free(args);
 476 }
 477
 478 typedef struct impl_func {
 479         char *name;
 480         impl_args *args;
 481         impl_type *return_type;
 482         unsigned return_reference:1;
 483 } impl_func;
 484
 485 static inline impl_func *init_impl_func(char *name, impl_args *args, impl_type *type, int ret_reference) {
 486         impl_func *func = calloc(1, sizeof(*func));
 487         func->name = strdup(name);
 488         func->args = args ? args : init_impl_args(NULL);
 489         func->return_type = type;
 490         func->return_reference = ret_reference;
 491         return func;
 492 }
 493
 494 static inline void free_impl_func(impl_func *f) {
 495         free_impl_type(f->return_type);
 496         free_impl_args(f->args);
 497         free(f->name);
 498         free(f);
 499 }
 500
 501 typedef struct let_calloc {
 502         size_t n;
 503         decl_type *type;
 504 } let_calloc;
 505
 506 static inline let_calloc *init_let_calloc(long n, decl_type *type) {
 507         let_calloc *alloc = calloc(1, sizeof(*alloc));
 508         alloc->n = n;
 509         alloc->type = type;
 510         return alloc;
 511 }
 512
 513 static inline void free_let_calloc(let_calloc *alloc) {
 514         free_decl_type(alloc->type);
 515         free(alloc);
 516 }
 517
 518 typedef struct let_func {
 519         token_t type;
 520         char *name;
 521         let_calloc *alloc;
 522 } let_func;
 523
 524 static inline let_func *init_let_func(token_t type, const char *name, let_calloc *alloc) {
 525         let_func *func = calloc(1, sizeof(*func));
 526         func->type = type;
 527         func->name = strdup(name);
 528         func->alloc = alloc;
 529         return func;
 530 }
 531
 532 static inline void free_let_func(let_func *func) {
 533         if (func->alloc) {
 534                 free_let_calloc(func->alloc);
 535         }
 536         free(func->name);
 537         free(func);
 538 }
 539
 540 typedef struct let_value {
 541         let_func *func;
 542         impl_var *var;
 543         unsigned is_reference:1;
 544 } let_value;
 545
 546 static inline let_value *init_let_value(let_func *func, impl_var *var, int is_reference) {
 547         let_value *val = calloc(1, sizeof(*val));
 548         val->is_reference = is_reference;
 549         val->func = func;
 550         val->var = var;
 551         return val;
 552 }
 553
 554 static inline void free_let_value(let_value *val) {
 555         if (val->func) {
 556                 free_let_func(val->func);
 557         }
 558         if (val->var) {
 559                 free_impl_var(val->var);
 560         }
 561         free(val);
 562 }
 563
 564 typedef struct let_stmt {
 565         decl_var *var;
 566         let_value *val;
 567         impl_arg *arg;
 568         impl_val out;
 569         void *ptr;
 570         void *mem;
 571 } let_stmt;
 572
 573 static inline let_stmt *init_let_stmt(decl_var *var, let_value *val) {
 574         let_stmt *let = calloc(1, sizeof(*let));
 575         let->var = var;
 576         let->val = val;
 577         return let;
 578 }
 579
 580 static inline void free_let_stmt(let_stmt *stmt) {
 581         free_decl_var(stmt->var);
 582         if (stmt->val) {
 583                 free_let_value(stmt->val);
 584         }
 585         free(stmt);
 586 }
 587
 588 struct set_value;
 589
 590 typedef struct set_func {
 591         token_t type;
 592         char *name;
 593         void (*handler)(zval *, token_t, impl_val *, struct set_value *set, decl_var *);
 594 } set_func;
 595
 596 static inline set_func *init_set_func(token_t type, const char *name) {
 597         set_func *func = calloc(1, sizeof(*func));
 598         func->type = type;
 599         func->name = strdup(name);
 600         return func;
 601 }
 602
 603 static inline void free_set_func(set_func *func) {
 604         free(func->name);
 605         free(func);
 606 }
 607
 608 typedef struct set_value {
 609         set_func *func;
 610         decl_vars *vars;
 611         struct set_value **inner;
 612         size_t count;
 613 } set_value;
 614
 615 static inline set_value *init_set_value(set_func *func, decl_vars *vars) {
 616         set_value *val = calloc(1, sizeof(*val));
 617         val->func = func;
 618         val->vars = vars;
 619         return val;
 620 }
 621 static inline set_value *add_inner_set_value(set_value *val, set_value *inner) {
 622         val->inner = realloc(val->inner, ++val->count * sizeof(*val->inner));
 623         val->inner[val->count-1] = inner;
 624         return val;
 625 }
 626
 627 static inline void free_set_value(set_value *val) {
 628         free_set_func(val->func);
 629         free_decl_vars(val->vars);
 630         if (val->inner) {
 631                 size_t i;
 632                 for (i = 0; i < val->count; ++i) {
 633                         free_set_value(val->inner[i]);
 634                 }
 635                 free(val->inner);
 636         }
 637         free(val);
 638 }
 639
 640 typedef struct set_stmt {
 641         impl_var *var;
 642         set_value *val;
 643         impl_arg *arg;
 644 } set_stmt;
 645
 646 static inline set_stmt *init_set_stmt(impl_var *var, set_value *val) {
 647         set_stmt *set = calloc(1, sizeof(*set));
 648         set->var = var;
 649         set->val = val;
 650         return set;
 651 }
 652
 653 static inline void free_set_stmt(set_stmt *set) {
 654         free_impl_var(set->var);
 655         free_set_value(set->val);
 656         free(set);
 657 }
 658
 659 typedef struct return_stmt {
 660         set_value *set;
 661         decl_arg *decl;
 662 } return_stmt;
 663
 664 static inline return_stmt *init_return_stmt(set_value *val) {
 665         return_stmt *ret = calloc(1, sizeof(*ret));
 666         ret->set = val;
 667         return ret;
 668 }
 669
 670 static inline void free_return_stmt(return_stmt *ret) {
 671         //free_set_func(ret->func);
 672         //free_decl_var(ret->decl);
 673         free_set_value(ret->set);
 674         free(ret);
 675 }
 676
 677 typedef struct free_stmt {
 678         decl_vars *vars;
 679 } free_stmt;
 680
 681 static inline free_stmt *init_free_stmt(decl_vars *vars) {
 682         free_stmt *free_ = calloc(1, sizeof(*free_));
 683         free_->vars = vars;
 684         return free_;
 685 }
 686
 687 static inline void free_free_stmt(free_stmt *free_) {
 688         free_decl_vars(free_->vars);
 689         free(free_);
 690 }
 691
 692 typedef struct impl_stmt {
 693         token_t type;
 694         union {
 695                 let_stmt *let;
 696                 set_stmt *set;
 697                 return_stmt *ret;
 698                 free_stmt *fre;
 699                 void *ptr;
 700         } s;
 701 } impl_stmt;
 702
 703 static inline impl_stmt *init_impl_stmt(token_t type, void *ptr) {
 704         impl_stmt *stmt = calloc(1, sizeof(*stmt));
 705         stmt->type = type;
 706         stmt->s.ptr = ptr;
 707         return stmt;
 708 }
 709
 710 static inline void free_impl_stmt(impl_stmt *stmt) {
 711         switch (stmt->type) {
 712         case PSI_T_LET:
 713                 free_let_stmt(stmt->s.let);
 714                 break;
 715         case PSI_T_SET:
 716                 free_set_stmt(stmt->s.set);
 717                 break;
 718         case PSI_T_RETURN:
 719                 free_return_stmt(stmt->s.ret);
 720                 break;
 721         case PSI_T_FREE:
 722                 free_free_stmt(stmt->s.fre);
 723                 break;
 724         }
 725         free(stmt);
 726 }
 727
 728 typedef struct impl_stmts {
 729         struct {
 730                 return_stmt **list;
 731                 size_t count;
 732         } ret;
 733         struct {
 734                 let_stmt **list;
 735                 size_t count;
 736         } let;
 737         struct {
 738                 set_stmt **list;
 739                 size_t count;
 740         } set;
 741         struct {
 742                 free_stmt **list;
 743                 size_t count;
 744         } fre;
 745 } impl_stmts;
 746
 747 static inline void *add_impl_stmt_ex(void *list, size_t count, void *stmt) {
 748         list = realloc(list, count * sizeof(list));
 749         ((void **)list)[count-1] = stmt;
 750         return list;
 751 }
 752
 753 static inline impl_stmts *add_impl_stmt(impl_stmts *stmts, impl_stmt *stmt) {
 754         switch (stmt->type) {
 755         case PSI_T_RETURN:
 756                 stmts->ret.list = add_impl_stmt_ex(stmts->ret.list, ++stmts->ret.count, stmt->s.ret);
 757                 break;
 758         case PSI_T_LET:
 759                 stmts->let.list = add_impl_stmt_ex(stmts->let.list, ++stmts->let.count, stmt->s.let);
 760                 break;
 761         case PSI_T_SET:
 762                 stmts->set.list = add_impl_stmt_ex(stmts->set.list, ++stmts->set.count, stmt->s.set);
 763                 break;
 764         case PSI_T_FREE:
 765                 stmts->fre.list = add_impl_stmt_ex(stmts->fre.list, ++stmts->fre.count, stmt->s.fre);
 766                 break;
 767         }
 768         free(stmt);
 769         return stmts;
 770 }
 771
 772 static inline impl_stmts *init_impl_stmts(impl_stmt *stmt) {
 773         impl_stmts *stmts = calloc(1, sizeof(*stmts));
 774         return add_impl_stmt(stmts, stmt);
 775 }
 776
 777 static inline void free_impl_stmts(impl_stmts *stmts) {
 778         size_t i;
 779
 780         for (i = 0; i < stmts->let.count; ++i) {
 781                 free_let_stmt(stmts->let.list[i]);
 782         }
 783         free(stmts->let.list);
 784         for (i = 0; i < stmts->ret.count; ++i) {
 785                 free_return_stmt(stmts->ret.list[i]);
 786         }
 787         free(stmts->ret.list);
 788         for (i = 0; i < stmts->set.count; ++i) {
 789                 free_set_stmt(stmts->set.list[i]);
 790         }
 791         free(stmts->set.list);
 792         for (i = 0; i < stmts->fre.count; ++i) {
 793                 free_free_stmt(stmts->fre.list[i]);
 794         }
 795         free(stmts->fre.list);
 796         free(stmts);
 797 }
 798
 799 typedef struct impl {
 800         impl_func *func;
 801         impl_stmts *stmts;
 802         decl *decl;
 803 } impl;
 804
 805 static inline impl *init_impl(impl_func *func, impl_stmts *stmts) {
 806         impl *i = calloc(1, sizeof(*i));
 807         i->func = func;
 808         i->stmts = stmts;
 809         return i;
 810 }
 811
 812 static inline void free_impl(impl *impl) {
 813         free_impl_func(impl->func);
 814         free_impl_stmts(impl->stmts);
 815         free(impl);
 816 }
 817
 818 typedef struct impls {
 819         size_t count;
 820         impl **list;
 821 } impls;
 822
 823 static inline impls *add_impl(impls *impls, impl *impl) {
 824         if (!impls) {
 825                 impls = calloc(1, sizeof(*impls));
 826         }
 827         impls->list = realloc(impls->list, ++impls->count * sizeof(*impls->list));
 828         impls->list[impls->count-1] = impl;
 829         return impls;
 830 }
 831
 832 static void free_impls(impls *impls) {
 833         size_t i;
 834
 835         for (i = 0; i < impls->count; ++i) {
 836                 free_impl(impls->list[i]);
 837         }
 838         free(impls->list);
 839         free(impls);
 840 }
 841
 842 typedef struct const_type {
 843         token_t type;
 844         char *name;
 845 } const_type;
 846
 847 static inline const_type *init_const_type(token_t type, const char *name) {
 848         const_type *ct = calloc(1, sizeof(*ct));
 849         ct->type = type;
 850         ct->name = strdup(name);
 851         return ct;
 852 }
 853
 854 static inline void free_const_type(const_type *type) {
 855         free(type->name);
 856         free(type);
 857 }
 858
 859 typedef struct constant {
 860         const_type *type;
 861         char *name;
 862         impl_def_val *val;
 863 } constant;
 864
 865 static inline constant *init_constant(const_type *type, const char *name, impl_def_val *val) {
 866         constant *c = calloc(1, sizeof(*c));
 867         c->type = type;
 868         c->name = strdup(name);
 869         c->val = val;
 870         return c;
 871 }
 872
 873 static inline void free_constant(constant *constant) {
 874         free_const_type(constant->type);
 875         free(constant->name);
 876         free_impl_def_val(constant->val);
 877         free(constant);
 878 }
 879
 880 typedef struct constants {
 881         size_t count;
 882         constant **list;
 883 } constants;
 884
 885 static inline constants *add_constant(constants *constants, constant *constant) {
 886         if (!constants) {
 887                 constants = calloc(1, sizeof(*constants));
 888         }
 889         constants->list = realloc(constants->list, ++constants->count * sizeof(*constants->list));
 890         constants->list[constants->count-1] = constant;
 891         return constants;
 892 }
 893
 894 static inline void free_constants(constants *c) {
 895         size_t i;
 896
 897         for (i = 0; i < c->count; ++i) {
 898                 free_constant(c->list[i]);
 899         }
 900         free(c->list);
 901         free(c);
 902 }
 903
 904 #define PSI_ERROR 16
 905 #define PSI_WARNING 32
 906 typedef void (*psi_error_cb)(int type, const char *msg, ...);
 907
 908 typedef struct decl_file {
 909         char *ln;
 910         char *fn;
 911 } decl_file;
 912
 913 static inline void free_decl_file(decl_file *file) {
 914         if (file->ln) {
 915                 free(file->ln);
 916         }
 917         if (file->fn) {
 918                 free(file->fn);
 919         }
 920         memset(file, 0, sizeof(*file));
 921 }
 922
 923 typedef struct decl_libs {
 924         void **dl;
 925         size_t count;
 926 } decl_libs;
 927
 928 static inline void free_decl_libs(decl_libs *libs) {
 929         if (libs->dl) {
 930                 size_t i;
 931                 for (i = 0; i < libs->count; ++i) {
 932                         if (libs->dl[i]) {
 933                                 dlclose(libs->dl[i]);
 934                         }
 935                 }
 936                 free(libs->dl);
 937         }
 938         memset(libs, 0, sizeof(*libs));
 939 }
 940
 941 static inline void add_decl_lib(decl_libs *libs, void *dlopened) {
 942         libs->dl = realloc(libs->dl, ++libs->count * sizeof(*libs->dl));
 943         libs->dl[libs->count-1] = dlopened;
 944 }
 945
 946 #define PSI_DATA(D) ((PSI_Data *) (D))
 947 #define PSI_DATA_MEMBERS \
 948         constants *consts; \
 949         decl_typedefs *defs; \
 950         decl_structs *structs; \
 951         decls *decls; \
 952         impls *impls; \
 953         union { \
 954                 decl_file file; \
 955                 decl_libs libs; \
 956         } psi; \
 957         psi_error_cb error
 958 typedef struct PSI_Data {
 959         PSI_DATA_MEMBERS;
 960 } PSI_Data;
 961
 962 static inline PSI_Data *PSI_DataExchange(PSI_Data *dest, PSI_Data *src) {
 963         if (!dest) {
 964                 dest = malloc(sizeof(*dest));
 965         }
 966         memcpy(dest, src, sizeof(*dest));
 967         memset(src, 0, sizeof(*src));
 968         return dest;
 969 }
 970
 971 static inline void PSI_DataDtor(PSI_Data *data) {
 972         if (data->consts) {
 973                 free_constants(data->consts);
 974         }
 975         if (data->defs) {
 976                 free_decl_typedefs(data->defs);
 977         }
 978         if (data->structs) {
 979                 free_decl_structs(data->structs);
 980         }
 981         if (data->decls) {
 982                 free_decls(data->decls);
 983         }
 984         if (data->impls) {
 985                 free_impls(data->impls);
 986         }
 987         free_decl_file(&data->psi.file);
 988 }
 989
 990 typedef struct PSI_Parser {
 991         PSI_DATA_MEMBERS;
 992         FILE *fp;
 993         unsigned flags;
 994         unsigned errors;
 995         void *proc;
 996         size_t line;
 997         token_t num;
 998         char *cur, *tok, *lim, *eof, *ctx, *mrk, buf[BSIZE];
 999 } PSI_Parser;
1000
1001 static inline PSI_Token *PSI_TokenAlloc(PSI_Parser *P) {
1002         PSI_Token *T;
1003         size_t token_len;
1004
1005         if (P->cur <= P->tok) {
1006                 return NULL;
1007         }
1008
1009         token_len = P->cur - P->tok;
1010
1011         T = calloc(1, sizeof(*T) + token_len);
1012         T->type = P->num;
1013         T->line = P->line;
1014         T->size = token_len;
1015         T->text[token_len] = 0;
1016         memcpy(T->text, P->tok, token_len);
1017
1018         return T;
1019 }
1020
1021 #define PSI_PARSER_DEBUG 0x1
1022
1023 PSI_Parser *PSI_ParserInit(PSI_Parser *P, const char *filename, psi_error_cb error, unsigned flags);
1024 void PSI_ParserSyntaxError(PSI_Parser *P, const char *fn, size_t ln, const char *msg, ...);
1025 size_t PSI_ParserFill(PSI_Parser *P, size_t n);
1026 token_t PSI_ParserScan(PSI_Parser *P);
1027 void PSI_ParserParse(PSI_Parser *P, PSI_Token *T);
1028 void PSI_ParserDtor(PSI_Parser *P);
1029 void PSI_ParserFree(PSI_Parser **P);
1030
1031 #endif