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 #define PSI_T_POINTER PSI_T_ASTERISK
  16 typedef int token_t;
  17
  18 /* in php_psi.h */
  19 size_t psi_t_alignment(token_t);
  20 size_t psi_t_size(token_t);
  21
  22 typedef struct PSI_Token {
  23         token_t type;
  24         unsigned line;
  25         size_t size;
  26         char text[1];
  27 } PSI_Token;
  28
  29 typedef union impl_val {
  30         char cval;
  31         int8_t i8;
  32         uint8_t u8;
  33         short sval;
  34         int16_t i16;
  35         uint16_t u16;
  36         int ival;
  37         int32_t i32;
  38         uint32_t u32;
  39         long lval;
  40         int64_t i64;
  41         uint64_t u64;
  42         float fval;
  43         double dval;
  44         union {
  45                 zend_bool bval;
  46                 zend_long lval;
  47                 zend_string *str;
  48         } zend;
  49         void *ptr;
  50         uint8_t _dbg[sizeof(void *)];
  51 } impl_val;
  52
  53 typedef struct decl_type {
  54         char *name;
  55         token_t type;
  56         struct decl_type *real;
  57         struct decl_struct *strct;
  58 } decl_type;
  59
  60 static inline decl_type *init_decl_type(token_t type, const char *name) {
  61         decl_type *t = calloc(1, sizeof(*t));
  62         t->type = type;
  63         t->name = strdup(name);
  64         return t;
  65 }
  66
  67 static inline decl_type *real_decl_type(decl_type *type) {
  68         while (type->real) {
  69                 type = type->real;
  70         }
  71         return type;
  72 }
  73
  74 static inline void free_decl_type(decl_type *type) {
  75         free(type->name);
  76         free(type);
  77 }
  78
  79 typedef struct decl_typedef {
  80         char *alias;
  81         decl_type *type;
  82 } decl_typedef;
  83
  84 static inline decl_typedef *init_decl_typedef(const char *name, decl_type *type) {
  85         decl_typedef *t = calloc(1, sizeof(*t));
  86         t->alias = strdup(name);
  87         t->type = type;
  88         return t;
  89 }
  90
  91 static inline void free_decl_typedef(decl_typedef *t) {
  92         free(t->alias);
  93         free_decl_type(t->type);
  94         free(t);
  95 }
  96
  97 typedef struct decl_typedefs {
  98         size_t count;
  99         decl_typedef **list;
 100 } decl_typedefs;
 101
 102 static inline decl_typedefs *add_decl_typedef(decl_typedefs *defs, decl_typedef *def) {
 103         if (!defs) {
 104                 defs = calloc(1, sizeof(*defs));
 105         }
 106         defs->list = realloc(defs->list, ++defs->count * sizeof(*defs->list));
 107         defs->list[defs->count-1] = def;
 108         return defs;
 109 }
 110
 111 static void free_decl_typedefs(decl_typedefs *defs) {
 112         size_t i;
 113
 114         for (i = 0; i < defs->count; ++i) {
 115                 free_decl_typedef(defs->list[i]);
 116         }
 117         free(defs->list);
 118         free(defs);
 119 }
 120
 121 typedef struct decl_var {
 122         char *name;
 123         unsigned pointer_level;
 124         unsigned array_size;
 125         struct decl_arg *arg;
 126 } decl_var;
 127
 128 static inline decl_var *init_decl_var(const char *name, unsigned pl, unsigned as) {
 129         decl_var *v = calloc(1, sizeof(*v));
 130         v->name = (char *) strdup((const char *) name);
 131         v->pointer_level = pl;
 132         v->array_size = as;
 133         return v;
 134 }
 135
 136 static inline void free_decl_var(decl_var *var) {
 137         free(var->name);
 138         free(var);
 139 }
 140
 141 typedef struct decl_struct_layout {
 142         size_t pos;
 143         size_t len;
 144 } decl_struct_layout;
 145
 146 static inline decl_struct_layout *init_decl_struct_layout(size_t pos, size_t len) {
 147         decl_struct_layout *l = calloc(1, sizeof(*l));
 148
 149         l->pos = pos;
 150         l->len = len;
 151         return l;
 152 }
 153
 154 static inline void free_decl_struct_layout(decl_struct_layout *l) {
 155         free(l);
 156 }
 157
 158 typedef struct decl_arg {
 159         decl_type *type;
 160         decl_var *var;
 161         decl_struct_layout *layout;
 162         struct let_stmt *let;
 163         impl_val val;
 164         void *ptr;
 165         void *mem;
 166 } decl_arg;
 167
 168 static inline decl_arg *init_decl_arg(decl_type *type, decl_var *var) {
 169         decl_arg *arg = calloc(1, sizeof(*arg));
 170         arg->type = type;
 171         arg->var = var;
 172         var->arg = arg;
 173         arg->ptr = &arg->val;
 174         return arg;
 175 }
 176
 177 static inline void free_decl_arg(decl_arg *arg) {
 178         free_decl_type(arg->type);
 179         free_decl_var(arg->var);
 180         if (arg->layout) {
 181                 free_decl_struct_layout(arg->layout);
 182         }
 183         free(arg);
 184 }
 185
 186 typedef struct decl_vars {
 187         decl_var **vars;
 188         size_t count;
 189 } decl_vars;
 190
 191 static inline decl_vars *init_decl_vars(decl_var *var) {
 192         decl_vars *vars = calloc(1, sizeof(*vars));
 193         if (var) {
 194                 vars->count = 1;
 195                 vars->vars = calloc(1, sizeof(*vars->vars));
 196                 vars->vars[0] = var;
 197         }
 198         return vars;
 199 }
 200
 201 static inline decl_vars *add_decl_var(decl_vars *vars, decl_var *var) {
 202         vars->vars = realloc(vars->vars, ++vars->count * sizeof(*vars->vars));
 203         vars->vars[vars->count-1] = var;
 204         return vars;
 205 }
 206
 207 static inline void free_decl_vars(decl_vars *vars) {
 208         size_t i;
 209
 210         for (i = 0; i < vars->count; ++i) {
 211                 free_decl_var(vars->vars[i]);
 212         }
 213         free(vars->vars);
 214         free(vars);
 215 }
 216
 217 typedef struct decl_args {
 218         decl_arg **args;
 219         size_t count;
 220 } decl_args;
 221
 222 static inline decl_args *init_decl_args(decl_arg *arg) {
 223         decl_args *args = calloc(1, sizeof(*args));
 224         if (arg) {
 225                 args->count = 1;
 226                 args->args = calloc(1, sizeof(*args->args));
 227                 args->args[0] = arg;
 228         }
 229         return args;
 230 }
 231
 232 static inline decl_args *add_decl_arg(decl_args *args, decl_arg *arg) {
 233         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 234         args->args[args->count-1] = arg;
 235         return args;
 236 }
 237
 238 static inline void free_decl_args(decl_args *args) {
 239         size_t i;
 240
 241         for (i = 0; i < args->count; ++i) {
 242                 free_decl_arg(args->args[i]);
 243         }
 244         free(args->args);
 245         free(args);
 246 }
 247
 248 typedef struct decl_abi {
 249         char *convention;
 250 } decl_abi;
 251
 252 static inline decl_abi *init_decl_abi(const char *convention) {
 253         decl_abi *abi = calloc(1, sizeof(*abi));
 254         abi->convention = strdup(convention);
 255         return abi;
 256 }
 257
 258 static inline void free_decl_abi(decl_abi *abi) {
 259         free(abi->convention);
 260         free(abi);
 261 }
 262
 263 typedef struct decl {
 264         decl_abi *abi;
 265         decl_arg *func;
 266         decl_args *args;
 267         struct impl *impl;
 268         struct {
 269                 void *sym;
 270                 void *info;
 271                 void **args;
 272         } call;
 273 } decl;
 274
 275 static inline decl* init_decl(decl_abi *abi, decl_arg *func, decl_args *args) {
 276         decl *d = calloc(1, sizeof(*d));
 277         d->abi = abi;
 278         d->func = func;
 279         d->args = args;
 280         return d;
 281 }
 282
 283 static inline void free_decl(decl *d) {
 284         free_decl_abi(d->abi);
 285         free_decl_arg(d->func);
 286         if (d->args) {
 287                 free_decl_args(d->args);
 288         }
 289         free(d);
 290 }
 291
 292 typedef struct decls {
 293         size_t count;
 294         decl **list;
 295 } decls;
 296
 297 static inline decls *add_decl(decls *decls, decl *decl) {
 298         if (!decls) {
 299                 decls = calloc(1, sizeof(*decls));
 300         }
 301         decls->list = realloc(decls->list, ++decls->count * sizeof(*decls->list));
 302         decls->list[decls->count-1] = decl;
 303         return decls;
 304 }
 305
 306 static inline void free_decls(decls *decls) {
 307         size_t i;
 308
 309         for (i = 0; i < decls->count; ++i) {
 310                 free_decl(decls->list[i]);
 311         }
 312         free(decls->list);
 313         free(decls);
 314 }
 315
 316 typedef struct decl_struct {
 317         char *name;
 318         decl_args *args;
 319         size_t size;
 320 } decl_struct;
 321
 322 static inline decl_struct *init_decl_struct(const char *name, decl_args *args) {
 323         decl_struct *s = calloc(1, sizeof(*s));
 324         s->name = strdup(name);
 325         s->args = args;
 326         return s;
 327 }
 328
 329 static inline void free_decl_struct(decl_struct *s) {
 330         if (s->args) {
 331                 free_decl_args(s->args);
 332         }
 333         free(s->name);
 334         free(s);
 335 }
 336
 337 typedef struct decl_structs {
 338         size_t count;
 339         decl_struct **list;
 340 } decl_structs;
 341
 342 static inline decl_structs *add_decl_struct(decl_structs *ss, decl_struct *s) {
 343         if (!ss) {
 344                 ss = calloc(1, sizeof(*ss));
 345         }
 346         ss->list = realloc(ss->list, ++ss->count * sizeof(*ss->list));
 347         ss->list[ss->count-1] = s;
 348         return ss;
 349 }
 350
 351 static inline void free_decl_structs(decl_structs *ss) {
 352         size_t i;
 353
 354         for (i = 0; i < ss->count; ++i) {
 355                 free_decl_struct(ss->list[i]);
 356         }
 357         free(ss->list);
 358         free(ss);
 359 }
 360
 361 typedef struct impl_type {
 362         char *name;
 363         token_t type;
 364 } impl_type;
 365
 366 static inline impl_type *init_impl_type(token_t type, const char *name) {
 367         impl_type *t = calloc(1, sizeof(*t));
 368
 369         t->type = type;
 370         t->name = strdup(name);
 371         return t;
 372 }
 373
 374 static inline void free_impl_type(impl_type *type) {
 375         free(type->name);
 376         free(type);
 377 }
 378
 379 typedef struct impl_var {
 380         char *name;
 381         unsigned reference:1;
 382 } impl_var;
 383
 384 static inline impl_var *init_impl_var(const char *name, int is_reference) {
 385         impl_var *var = calloc(1, sizeof(*var));
 386         var->name = strdup(name);
 387         var->reference = is_reference;
 388         return var;
 389 }
 390
 391 static inline void free_impl_var(impl_var *var) {
 392         free(var->name);
 393         free(var);
 394 }
 395
 396 typedef struct impl_def_val {
 397         token_t type;
 398         char *text;
 399 } impl_def_val;
 400
 401 static inline impl_def_val *init_impl_def_val(token_t t, const char *text) {
 402         impl_def_val *def = calloc(1, sizeof(*def));
 403         def->type = t;
 404         def->text = strdup(text);
 405         return def;
 406 }
 407
 408 static inline void free_impl_def_val(impl_def_val *def) {
 409         free(def->text);
 410         free(def);
 411 }
 412
 413 typedef struct const_type {
 414         token_t type;
 415         char *name;
 416 } const_type;
 417
 418 static inline const_type *init_const_type(token_t type, const char *name) {
 419         const_type *ct = calloc(1, sizeof(*ct));
 420         ct->type = type;
 421         ct->name = strdup(name);
 422         return ct;
 423 }
 424
 425 static inline void free_const_type(const_type *type) {
 426         free(type->name);
 427         free(type);
 428 }
 429
 430 typedef struct constant {
 431         const_type *type;
 432         char *name;
 433         impl_def_val *val;
 434 } constant;
 435
 436 static inline constant *init_constant(const_type *type, const char *name, impl_def_val *val) {
 437         constant *c = calloc(1, sizeof(*c));
 438         c->type = type;
 439         c->name = strdup(name);
 440         c->val = val;
 441         return c;
 442 }
 443
 444 static inline void free_constant(constant *constant) {
 445         free_const_type(constant->type);
 446         free(constant->name);
 447         free_impl_def_val(constant->val);
 448         free(constant);
 449 }
 450
 451 typedef struct constants {
 452         size_t count;
 453         constant **list;
 454 } constants;
 455
 456 static inline constants *add_constant(constants *constants, constant *constant) {
 457         if (!constants) {
 458                 constants = calloc(1, sizeof(*constants));
 459         }
 460         constants->list = realloc(constants->list, ++constants->count * sizeof(*constants->list));
 461         constants->list[constants->count-1] = constant;
 462         return constants;
 463 }
 464
 465 static inline void free_constants(constants *c) {
 466         size_t i;
 467
 468         for (i = 0; i < c->count; ++i) {
 469                 free_constant(c->list[i]);
 470         }
 471         free(c->list);
 472         free(c);
 473 }
 474
 475 typedef struct impl_arg {
 476         impl_type *type;
 477         impl_var *var;
 478         impl_def_val *def;
 479         impl_val val;
 480         zval *_zv;
 481 } impl_arg;
 482
 483 static inline impl_arg *init_impl_arg(impl_type *type, impl_var *var, impl_def_val *def) {
 484         impl_arg *arg = calloc(1, sizeof(*arg));
 485         arg->type = type;
 486         arg->var = var;
 487         arg->def = def;
 488         return arg;
 489 }
 490
 491 static inline void free_impl_arg(impl_arg *arg) {
 492         free_impl_type(arg->type);
 493         free_impl_var(arg->var);
 494         if (arg->def) {
 495                 free_impl_def_val(arg->def);
 496         }
 497         free(arg);
 498 }
 499
 500 typedef struct impl_args {
 501         impl_arg **args;
 502         size_t count;
 503 } impl_args;
 504
 505 static inline impl_args *init_impl_args(impl_arg *arg) {
 506         impl_args *args = calloc(1, sizeof(*args));
 507         if (arg) {
 508                 args->count = 1;
 509                 args->args = calloc(1, sizeof(*args->args));
 510                 args->args[0] = arg;
 511         }
 512         return args;
 513 }
 514
 515 static inline impl_args *add_impl_arg(impl_args *args, impl_arg *arg) {
 516         args->args = realloc(args->args, ++args->count * sizeof(*args->args));
 517         args->args[args->count-1] = arg;
 518         return args;
 519 }
 520
 521 static inline void free_impl_args(impl_args *args) {
 522         size_t i;
 523
 524         for (i = 0; i < args->count; ++i) {
 525                 free_impl_arg(args->args[i]);
 526         }
 527         free(args->args);
 528         free(args);
 529 }
 530
 531 typedef struct impl_func {
 532         char *name;
 533         impl_args *args;
 534         impl_type *return_type;
 535         unsigned return_reference:1;
 536 } impl_func;
 537
 538 static inline impl_func *init_impl_func(char *name, impl_args *args, impl_type *type, int ret_reference) {
 539         impl_func *func = calloc(1, sizeof(*func));
 540         func->name = strdup(name);
 541         func->args = args ? args : init_impl_args(NULL);
 542         func->return_type = type;
 543         func->return_reference = ret_reference;
 544         return func;
 545 }
 546
 547 static inline void free_impl_func(impl_func *f) {
 548         free_impl_type(f->return_type);
 549         free_impl_args(f->args);
 550         free(f->name);
 551         free(f);
 552 }
 553
 554 typedef struct num_exp {
 555         token_t t;
 556         union {
 557                 char *numb;
 558                 constant *cnst;
 559                 decl_var *dvar;
 560         } u;
 561         token_t operator;
 562         int (*calculator)(int t1, impl_val *v1, int t2, impl_val *v2, impl_val *res);
 563         struct num_exp *operand;
 564 } num_exp;
 565
 566 static inline num_exp *init_num_exp(token_t t, void *num) {
 567         num_exp *exp = calloc(1, sizeof(*exp));
 568         switch (exp->t = t) {
 569         case PSI_T_NUMBER:
 570         case PSI_T_NSNAME:
 571                 exp->u.numb = strdup(num);
 572                 break;
 573         case PSI_T_NAME:
 574                 exp->u.dvar = num;
 575                 break;
 576         EMPTY_SWITCH_DEFAULT_CASE();
 577         }
 578         return exp;
 579 }
 580
 581 static inline void free_num_exp(num_exp *exp) {
 582         switch (exp->t) {
 583         case PSI_T_NUMBER:
 584                 free(exp->u.numb);
 585                 break;
 586         case PSI_T_NSNAME:
 587                 break;
 588         case PSI_T_NAME:
 589                 free_decl_var(exp->u.dvar);
 590                 break;
 591         EMPTY_SWITCH_DEFAULT_CASE();
 592         }
 593         if (exp->operand) {
 594                 free_num_exp(exp->operand);
 595         }
 596         free(exp);
 597 }
 598
 599 typedef struct let_calloc {
 600         num_exp *nmemb;
 601         num_exp *size;
 602 } let_calloc;
 603
 604 static inline let_calloc *init_let_calloc(num_exp *nmemb, num_exp *size) {
 605         let_calloc *alloc = calloc(1, sizeof(*alloc));
 606         alloc->nmemb = nmemb;
 607         alloc->size = size;
 608         return alloc;
 609 }
 610
 611 static inline void free_let_calloc(let_calloc *alloc) {
 612         free_num_exp(alloc->nmemb);
 613         free_num_exp(alloc->size);
 614         free(alloc);
 615 }
 616
 617 typedef struct let_func {
 618         token_t type;
 619         char *name;
 620         let_calloc *alloc;
 621 } let_func;
 622
 623 static inline let_func *init_let_func(token_t type, const char *name, let_calloc *alloc) {
 624         let_func *func = calloc(1, sizeof(*func));
 625         func->type = type;
 626         func->name = strdup(name);
 627         func->alloc = alloc;
 628         return func;
 629 }
 630
 631 static inline void free_let_func(let_func *func) {
 632         if (func->alloc) {
 633                 free_let_calloc(func->alloc);
 634         }
 635         free(func->name);
 636         free(func);
 637 }
 638
 639 typedef struct let_value {
 640         let_func *func;
 641         impl_var *var;
 642         num_exp *num;
 643         unsigned is_reference:1;
 644 } let_value;
 645
 646 static inline let_value *init_let_value(let_func *func, impl_var *var, int is_reference) {
 647         let_value *val = calloc(1, sizeof(*val));
 648         val->is_reference = is_reference;
 649         val->func = func;
 650         val->var = var;
 651         return val;
 652 }
 653
 654 static inline void free_let_value(let_value *val) {
 655         if (val->func) {
 656                 free_let_func(val->func);
 657         }
 658         if (val->var) {
 659                 free_impl_var(val->var);
 660         }
 661         free(val);
 662 }
 663
 664 typedef struct let_stmt {
 665         decl_var *var;
 666         let_value *val;
 667         impl_arg *arg;
 668         void *ptr;
 669 } let_stmt;
 670
 671 static inline let_stmt *init_let_stmt(decl_var *var, let_value *val) {
 672         let_stmt *let = calloc(1, sizeof(*let));
 673         let->var = var;
 674         let->val = val;
 675         return let;
 676 }
 677
 678 static inline void free_let_stmt(let_stmt *stmt) {
 679         free_decl_var(stmt->var);
 680         if (stmt->val) {
 681                 free_let_value(stmt->val);
 682         }
 683         free(stmt);
 684 }
 685
 686 struct set_value;
 687
 688 typedef struct set_func {
 689         token_t type;
 690         char *name;
 691         void (*handler)(zval *, struct set_value *set, impl_val *ret_val);
 692 } set_func;
 693
 694 static inline set_func *init_set_func(token_t type, const char *name) {
 695         set_func *func = calloc(1, sizeof(*func));
 696         func->type = type;
 697         func->name = strdup(name);
 698         return func;
 699 }
 700
 701 static inline void free_set_func(set_func *func) {
 702         free(func->name);
 703         free(func);
 704 }
 705
 706 typedef struct set_value {
 707         set_func *func;
 708         decl_vars *vars;
 709         num_exp *num;
 710         struct {
 711                 struct set_value *set;
 712                 impl_val *val;
 713         } outer;
 714         struct set_value **inner;
 715         size_t count;
 716 } set_value;
 717
 718 static inline set_value *init_set_value(set_func *func, decl_vars *vars) {
 719         set_value *val = calloc(1, sizeof(*val));
 720         val->func = func;
 721         val->vars = vars;
 722         return val;
 723 }
 724 static inline set_value *add_inner_set_value(set_value *val, set_value *inner) {
 725         val->inner = realloc(val->inner, ++val->count * sizeof(*val->inner));
 726         val->inner[val->count-1] = inner;
 727         return val;
 728 }
 729
 730 static inline void free_set_value(set_value *val) {
 731         free_set_func(val->func);
 732         free_decl_vars(val->vars);
 733         if (val->inner) {
 734                 size_t i;
 735                 for (i = 0; i < val->count; ++i) {
 736                         free_set_value(val->inner[i]);
 737                 }
 738                 free(val->inner);
 739         }
 740         free(val);
 741 }
 742
 743 typedef struct set_stmt {
 744         impl_var *var;
 745         set_value *val;
 746         impl_arg *arg;
 747 } set_stmt;
 748
 749 static inline set_stmt *init_set_stmt(impl_var *var, set_value *val) {
 750         set_stmt *set = calloc(1, sizeof(*set));
 751         set->var = var;
 752         set->val = val;
 753         return set;
 754 }
 755
 756 static inline void free_set_stmt(set_stmt *set) {
 757         free_impl_var(set->var);
 758         free_set_value(set->val);
 759         free(set);
 760 }
 761
 762 typedef struct return_stmt {
 763         set_value *set;
 764         decl_arg *decl;
 765 } return_stmt;
 766
 767 static inline return_stmt *init_return_stmt(set_value *val) {
 768         return_stmt *ret = calloc(1, sizeof(*ret));
 769         ret->set = val;
 770         return ret;
 771 }
 772
 773 static inline void free_return_stmt(return_stmt *ret) {
 774         //free_set_func(ret->func);
 775         //free_decl_var(ret->decl);
 776         free_set_value(ret->set);
 777         free(ret);
 778 }
 779
 780 typedef struct free_call {
 781         char *func;
 782         decl_vars *vars;
 783         decl *decl;
 784 } free_call;
 785
 786 static inline free_call *init_free_call(const char *func, decl_vars *vars) {
 787         free_call *f = calloc(1, sizeof(*f));
 788         f->func = strdup(func);
 789         f->vars = vars;
 790         return f;
 791 }
 792
 793 static inline void free_free_call(free_call *f) {
 794         free(f->func);
 795         free(f);
 796 }
 797
 798 typedef struct free_calls {
 799         free_call **list;
 800         size_t count;
 801 } free_calls;
 802
 803 static inline free_calls *init_free_calls(free_call *f) {
 804         free_calls *fcs = calloc(1, sizeof(*fcs));
 805         if (f) {
 806                 fcs->count = 1;
 807                 fcs->list = calloc(1, sizeof(*fcs->list));
 808                 fcs->list[0] = f;
 809         }
 810         return fcs;
 811 }
 812
 813 static inline void free_free_calls(free_calls *fcs) {
 814         size_t i;
 815
 816         for (i = 0; i < fcs->count; ++i) {
 817                 free_free_call(fcs->list[i]);
 818         }
 819         free(fcs->list);
 820         free(fcs);
 821 }
 822
 823 static inline free_calls *add_free_call(free_calls *fcs, free_call *f) {
 824         fcs->list = realloc(fcs->list, ++fcs->count * sizeof(*fcs->list));
 825         fcs->list[fcs->count-1] = f;
 826         return fcs;
 827 }
 828
 829 typedef struct free_stmt {
 830         free_calls *calls;
 831 } free_stmt;
 832
 833 static inline free_stmt *init_free_stmt(free_calls *calls) {
 834         free_stmt *f = calloc(1, sizeof(*f));
 835         f->calls = calls;
 836         return f;
 837 }
 838
 839 static inline void free_free_stmt(free_stmt *f) {
 840         free_free_calls(f->calls);
 841         free(f);
 842 }
 843
 844 typedef struct impl_stmt {
 845         token_t type;
 846         union {
 847                 let_stmt *let;
 848                 set_stmt *set;
 849                 return_stmt *ret;
 850                 free_stmt *fre;
 851                 void *ptr;
 852         } s;
 853 } impl_stmt;
 854
 855 static inline impl_stmt *init_impl_stmt(token_t type, void *ptr) {
 856         impl_stmt *stmt = calloc(1, sizeof(*stmt));
 857         stmt->type = type;
 858         stmt->s.ptr = ptr;
 859         return stmt;
 860 }
 861
 862 static inline void free_impl_stmt(impl_stmt *stmt) {
 863         switch (stmt->type) {
 864         case PSI_T_LET:
 865                 free_let_stmt(stmt->s.let);
 866                 break;
 867         case PSI_T_SET:
 868                 free_set_stmt(stmt->s.set);
 869                 break;
 870         case PSI_T_RETURN:
 871                 free_return_stmt(stmt->s.ret);
 872                 break;
 873         case PSI_T_FREE:
 874                 free_free_stmt(stmt->s.fre);
 875                 break;
 876         }
 877         free(stmt);
 878 }
 879
 880 typedef struct impl_stmts {
 881         struct {
 882                 return_stmt **list;
 883                 size_t count;
 884         } ret;
 885         struct {
 886                 let_stmt **list;
 887                 size_t count;
 888         } let;
 889         struct {
 890                 set_stmt **list;
 891                 size_t count;
 892         } set;
 893         struct {
 894                 free_stmt **list;
 895                 size_t count;
 896         } fre;
 897 } impl_stmts;
 898
 899 static inline void *add_impl_stmt_ex(void *list, size_t count, void *stmt) {
 900         list = realloc(list, count * sizeof(list));
 901         ((void **)list)[count-1] = stmt;
 902         return list;
 903 }
 904
 905 static inline impl_stmts *add_impl_stmt(impl_stmts *stmts, impl_stmt *stmt) {
 906         switch (stmt->type) {
 907         case PSI_T_RETURN:
 908                 stmts->ret.list = add_impl_stmt_ex(stmts->ret.list, ++stmts->ret.count, stmt->s.ret);
 909                 break;
 910         case PSI_T_LET:
 911                 stmts->let.list = add_impl_stmt_ex(stmts->let.list, ++stmts->let.count, stmt->s.let);
 912                 break;
 913         case PSI_T_SET:
 914                 stmts->set.list = add_impl_stmt_ex(stmts->set.list, ++stmts->set.count, stmt->s.set);
 915                 break;
 916         case PSI_T_FREE:
 917                 stmts->fre.list = add_impl_stmt_ex(stmts->fre.list, ++stmts->fre.count, stmt->s.fre);
 918                 break;
 919         }
 920         free(stmt);
 921         return stmts;
 922 }
 923
 924 static inline impl_stmts *init_impl_stmts(impl_stmt *stmt) {
 925         impl_stmts *stmts = calloc(1, sizeof(*stmts));
 926         return add_impl_stmt(stmts, stmt);
 927 }
 928
 929 static inline void free_impl_stmts(impl_stmts *stmts) {
 930         size_t i;
 931
 932         for (i = 0; i < stmts->let.count; ++i) {
 933                 free_let_stmt(stmts->let.list[i]);
 934         }
 935         free(stmts->let.list);
 936         for (i = 0; i < stmts->ret.count; ++i) {
 937                 free_return_stmt(stmts->ret.list[i]);
 938         }
 939         free(stmts->ret.list);
 940         for (i = 0; i < stmts->set.count; ++i) {
 941                 free_set_stmt(stmts->set.list[i]);
 942         }
 943         free(stmts->set.list);
 944         for (i = 0; i < stmts->fre.count; ++i) {
 945                 free_free_stmt(stmts->fre.list[i]);
 946         }
 947         free(stmts->fre.list);
 948         free(stmts);
 949 }
 950
 951 typedef struct impl {
 952         impl_func *func;
 953         impl_stmts *stmts;
 954         decl *decl;
 955 } impl;
 956
 957 static inline impl *init_impl(impl_func *func, impl_stmts *stmts) {
 958         impl *i = calloc(1, sizeof(*i));
 959         i->func = func;
 960         i->stmts = stmts;
 961         return i;
 962 }
 963
 964 static inline void free_impl(impl *impl) {
 965         free_impl_func(impl->func);
 966         free_impl_stmts(impl->stmts);
 967         free(impl);
 968 }
 969
 970 typedef struct impls {
 971         size_t count;
 972         impl **list;
 973 } impls;
 974
 975 static inline impls *add_impl(impls *impls, impl *impl) {
 976         if (!impls) {
 977                 impls = calloc(1, sizeof(*impls));
 978         }
 979         impls->list = realloc(impls->list, ++impls->count * sizeof(*impls->list));
 980         impls->list[impls->count-1] = impl;
 981         return impls;
 982 }
 983
 984 static void free_impls(impls *impls) {
 985         size_t i;
 986
 987         for (i = 0; i < impls->count; ++i) {
 988                 free_impl(impls->list[i]);
 989         }
 990         free(impls->list);
 991         free(impls);
 992 }
 993
 994 typedef struct decl_file {
 995         char *ln;
 996         char *fn;
 997 } decl_file;
 998
 999 static inline void free_decl_file(decl_file *file) {
1000         if (file->ln) {
1001                 free(file->ln);
1002         }
1003         if (file->fn) {
1004                 free(file->fn);
1005         }
1006         memset(file, 0, sizeof(*file));
1007 }
1008
1009 typedef struct decl_libs {
1010         void **dl;
1011         size_t count;
1012 } decl_libs;
1013
1014 static inline void free_decl_libs(decl_libs *libs) {
1015         if (libs->dl) {
1016                 size_t i;
1017                 for (i = 0; i < libs->count; ++i) {
1018                         if (libs->dl[i]) {
1019                                 dlclose(libs->dl[i]);
1020                         }
1021                 }
1022                 free(libs->dl);
1023         }
1024         memset(libs, 0, sizeof(*libs));
1025 }
1026
1027 static inline void add_decl_lib(decl_libs *libs, void *dlopened) {
1028         libs->dl = realloc(libs->dl, ++libs->count * sizeof(*libs->dl));
1029         libs->dl[libs->count-1] = dlopened;
1030 }
1031
1032 static inline impl_val *deref_impl_val(impl_val *ret_val, decl_var *var) {
1033         unsigned i;
1034
1035         if (var->arg->var != var) for (i = 1; i < var->pointer_level; ++i) {
1036                 ret_val = *(void **) ret_val;
1037         }
1038         return ret_val;
1039 }
1040
1041 static inline impl_val *enref_impl_val(void *ptr, decl_var *var) {
1042         impl_val *val, *val_ptr;
1043         unsigned i;
1044
1045         if (!var->pointer_level && real_decl_type(var->arg->type)->type != PSI_T_STRUCT) {
1046                 return ptr;
1047         }
1048         val = val_ptr = calloc(var->pointer_level + 1, sizeof(void *));
1049         for (i = 1; i < var->pointer_level; ++i) {
1050                 val_ptr->ptr = (void **) val_ptr + 1;
1051                 val_ptr = val_ptr->ptr;
1052         }
1053         val_ptr->ptr = ptr;
1054         return val;
1055 }
1056
1057 static inline impl_val *struct_member_ref(decl_arg *set_arg, impl_val *struct_ptr, impl_val **to_free) {
1058         void *ptr = (char *) struct_ptr->ptr + set_arg->layout->pos;
1059         impl_val *val = enref_impl_val(ptr, set_arg->var);
1060
1061         if (val != ptr) {
1062                 *to_free = val;
1063         }
1064
1065         return val;
1066 }
1067
1068 #define PSI_ERROR 16
1069 #define PSI_WARNING 32
1070 typedef void (*psi_error_cb)(int type, const char *msg, ...);
1071
1072 #define PSI_DATA(D) ((PSI_Data *) (D))
1073 #define PSI_DATA_MEMBERS \
1074         constants *consts; \
1075         decl_typedefs *defs; \
1076         decl_structs *structs; \
1077         decls *decls; \
1078         impls *impls; \
1079         union { \
1080                 decl_file file; \
1081                 decl_libs libs; \
1082         } psi; \
1083         psi_error_cb error
1084 typedef struct PSI_Data {
1085         PSI_DATA_MEMBERS;
1086 } PSI_Data;
1087
1088 static inline PSI_Data *PSI_DataExchange(PSI_Data *dest, PSI_Data *src) {
1089         if (!dest) {
1090                 dest = malloc(sizeof(*dest));
1091         }
1092         memcpy(dest, src, sizeof(*dest));
1093         memset(src, 0, sizeof(*src));
1094         return dest;
1095 }
1096
1097 static inline void PSI_DataDtor(PSI_Data *data) {
1098         if (data->consts) {
1099                 free_constants(data->consts);
1100         }
1101         if (data->defs) {
1102                 free_decl_typedefs(data->defs);
1103         }
1104         if (data->structs) {
1105                 free_decl_structs(data->structs);
1106         }
1107         if (data->decls) {
1108                 free_decls(data->decls);
1109         }
1110         if (data->impls) {
1111                 free_impls(data->impls);
1112         }
1113         free_decl_file(&data->psi.file);
1114 }
1115
1116 typedef struct PSI_Parser {
1117         PSI_DATA_MEMBERS;
1118         FILE *fp;
1119         unsigned flags;
1120         unsigned errors;
1121         void *proc;
1122         size_t line;
1123         token_t num;
1124         char *cur, *tok, *lim, *eof, *ctx, *mrk, buf[BSIZE];
1125 } PSI_Parser;
1126
1127 static inline PSI_Token *PSI_TokenAlloc(PSI_Parser *P) {
1128         PSI_Token *T;
1129         size_t token_len;
1130
1131         if (P->cur < P->tok) {
1132                 return NULL;
1133         }
1134
1135         token_len = P->cur - P->tok;
1136
1137         T = calloc(1, sizeof(*T) + token_len);
1138         T->type = P->num;
1139         T->line = P->line;
1140         T->size = token_len;
1141         T->text[token_len] = 0;
1142         memcpy(T->text, P->tok, token_len);
1143
1144         return T;
1145 }
1146
1147 #define PSI_PARSER_DEBUG 0x1
1148
1149 PSI_Parser *PSI_ParserInit(PSI_Parser *P, const char *filename, psi_error_cb error, unsigned flags);
1150 void PSI_ParserSyntaxError(PSI_Parser *P, const char *fn, size_t ln, const char *msg, ...);
1151 size_t PSI_ParserFill(PSI_Parser *P, size_t n);
1152 token_t PSI_ParserScan(PSI_Parser *P);
1153 void PSI_ParserParse(PSI_Parser *P, PSI_Token *T);
1154 void PSI_ParserDtor(PSI_Parser *P);
1155 void PSI_ParserFree(PSI_Parser **P);
1156
1157 #endif