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