git.m6w6.name Git - m6w6/ext-psi/blob - src/parser_proc.y

   1 %include {
   2 #include <assert.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "parser.h"
   7
   8 }
   9
  10 %name PSI_ParserProc
  11 %token_prefix PSI_T_
  12 %token_type {PSI_Token *}
  13 %token_destructor {free($$);}
  14 %default_destructor {(void)P;}
  15 %extra_argument {PSI_Parser *P}
  16 /* TOKEN is defined inside syntax_error */
  17 %syntax_error {
  18         PSI_ParserSyntaxError(P, P->fn, P->line, "Unexpected token '%s'", TOKEN->text);
  19 }
  20 file ::= blocks.
  21
  22 blocks ::= block.
  23 blocks ::= blocks block.
  24
  25 block ::= COMMENT.
  26
  27 block ::= LIB(T) QUOTED_STRING(libname) EOS. {
  28         if (P->lib) {
  29                 PSI_ParserSyntaxError(P, P->fn, T->line, "Extra 'lib %s' statement has no effect", libname->text);
  30         } else {
  31                 P->lib = strndup(libname->text + 1, libname->size - 2);
  32         }
  33         free(libname);
  34         free(T);
  35 }
  36
  37 block ::= decl(decl). {
  38         P->decls = add_decl(P->decls, decl);
  39 }
  40 block ::= impl(impl). {
  41         P->impls = add_impl(P->impls, impl);
  42 }
  43 block ::= decl_typedef(def). {
  44         P->defs = add_decl_typedef(P->defs, def);
  45 }
  46 block ::= constant(constant). {
  47         P->consts = add_constant(P->consts, constant);
  48 }
  49 block ::= decl_struct(strct). {
  50         P->structs = add_decl_struct(P->structs, strct);
  51 }
  52
  53 %type decl_struct {decl_struct*}
  54 decl_struct(strct) ::= STRUCT NAME(N) LBRACE struct_args(args) RBRACE. {
  55         strct = init_decl_struct(N->text, args);
  56 }
  57
  58 %type const_type {const_type*}
  59 const_type(type_) ::= BOOL(T). {
  60         type_ = init_const_type(T->type, T->text);
  61         free(T);
  62 }
  63 const_type(type_) ::= INT(T). {
  64         type_ = init_const_type(T->type, T->text);
  65         free(T);
  66 }
  67 const_type(type_) ::= FLOAT(T). {
  68         type_ = init_const_type(T->type, T->text);
  69         free(T);
  70 }
  71 const_type(type_) ::= STRING(T). {
  72         type_ = init_const_type(T->type, T->text);
  73         free(T);
  74 }
  75 %type constant {constant*}
  76 constant(constant) ::= CONST const_type(type) NSNAME(T) EQUALS impl_def_val(val) EOS. {
  77         constant = init_constant(type, T->text, val);
  78         free(T);
  79 }
  80
  81 %type decl_typedef {decl_typedef*}
  82 decl_typedef(def) ::= TYPEDEF decl_type(type) NAME(ALIAS) EOS. {
  83         def = init_decl_typedef(ALIAS->text, type);
  84         free(ALIAS);
  85 }
  86 decl_typedef(def) ::= TYPEDEF STRUCT(S) NAME(N) NAME(ALIAS) EOS. {
  87         def = init_decl_typedef(ALIAS->text, init_decl_type(S->type, N->text));
  88         free(ALIAS);
  89         free(S);
  90         free(N);
  91 }
  92
  93 %type decl {decl*}
  94 decl(decl) ::= decl_abi(abi) decl_arg(func) LPAREN decl_args(args) RPAREN EOS. {
  95         decl = init_decl(abi, func, args);
  96 }
  97
  98 %type decl_abi {decl_abi*}
  99 decl_abi(abi) ::= NAME(T). {
 100         abi = init_decl_abi(T->text);
 101         free(T);
 102 }
 103
 104 %type decl_var {decl_var*}
 105 decl_var(var) ::= NAME(T). {
 106         var = init_decl_var(T->text, 0, 0);
 107         free(T);
 108 }
 109 decl_var(var) ::= pointers(p) NAME(T). {
 110         var = init_decl_var(T->text, p, 0);
 111         free(T);
 112 }
 113 decl_var(var) ::= NAME(T) LBRACKET NUMBER(D) RBRACKET. {
 114         var = init_decl_var(T->text, 1, atol(D->text));
 115         free(T);
 116         free(D);
 117 }
 118 decl_var(var) ::= pointers(p) NAME(T) LBRACKET NUMBER(D) RBRACKET. {
 119         var = init_decl_var(T->text, p+1, atol(D->text));
 120         free(T);
 121         free(D);
 122 }
 123
 124 %type decl_vars {decl_vars*}
 125 decl_vars(vars) ::= decl_var(var). {
 126         vars = init_decl_vars(var);
 127 }
 128 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
 129         vars = add_decl_var(vars_, var);
 130 }
 131
 132 %type decl_arg {decl_arg*}
 133 decl_arg(arg) ::= decl_type(type) decl_var(var). {
 134         arg = init_decl_arg(type, var);
 135 }
 136
 137 %type decl_args {decl_args*}
 138 decl_args ::= VOID.
 139 decl_args(args) ::= decl_arg(arg). {
 140         args = init_decl_args(arg);
 141 }
 142 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
 143         args = add_decl_arg(args_, arg);
 144 }
 145 %type struct_args {decl_args*}
 146 struct_args(args) ::= decl_arg(arg) EOS. {
 147         args = init_decl_args(arg);
 148 }
 149 struct_args(args) ::= struct_args(args_) decl_arg(arg) EOS. {
 150         args = add_decl_arg(args_, arg);
 151 }
 152
 153 %type decl_type {decl_type*}
 154 decl_type(type_) ::= VOID(T). {
 155         type_ = init_decl_type(T->type, T->text);
 156         free(T);
 157 }
 158 decl_type(type_) ::= CHAR(T). {
 159         type_ = init_decl_type(T->type, T->text);
 160         free(T);
 161 }
 162 decl_type(type_) ::= SHORT(T). {
 163         type_ = init_decl_type(T->type, T->text);
 164         free(T);
 165 }
 166 decl_type(type_) ::= INT(T). {
 167         type_ = init_decl_type(T->type, T->text);
 168         free(T);
 169 }
 170 decl_type(type_) ::= LONG(T). {
 171         type_ = init_decl_type(T->type, T->text);
 172         free(T);
 173 }
 174 decl_type(type_) ::= FLOAT(T). {
 175         type_ = init_decl_type(T->type, T->text);
 176         free(T);
 177 }
 178 decl_type(type_) ::= DOUBLE(T). {
 179         type_ = init_decl_type(T->type, T->text);
 180         free(T);
 181 }
 182 decl_type(type_) ::= SINT8(T). {
 183         type_ = init_decl_type(T->type, T->text);
 184         free(T);
 185 }
 186 decl_type(type_) ::= UINT8(T). {
 187         type_ = init_decl_type(T->type, T->text);
 188         free(T);
 189 }
 190 decl_type(type_) ::= SINT16(T). {
 191         type_ = init_decl_type(T->type, T->text);
 192         free(T);
 193 }
 194 decl_type(type_) ::= UINT16(T). {
 195         type_ = init_decl_type(T->type, T->text);
 196         free(T);
 197 }
 198 decl_type(type_) ::= SINT32(T). {
 199         type_ = init_decl_type(T->type, T->text);
 200         free(T);
 201 }
 202 decl_type(type_) ::= UINT32(T). {
 203         type_ = init_decl_type(T->type, T->text);
 204         free(T);
 205 }
 206 decl_type(type_) ::= SINT64(T). {
 207         type_ = init_decl_type(T->type, T->text);
 208         free(T);
 209 }
 210 decl_type(type_) ::= UINT64(T). {
 211         type_ = init_decl_type(T->type, T->text);
 212         free(T);
 213 }
 214 decl_type(type_) ::= NAME(T). {
 215         type_ = init_decl_type(T->type, T->text);
 216         free(T);
 217 }
 218
 219 %type impl {impl*}
 220 %destructor impl {free_impl($$);}
 221 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 222         impl = init_impl(func, stmts);
 223 }
 224
 225 %type impl_func {impl_func*}
 226 impl_func(func) ::= FUNCTION NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 227         func = init_impl_func(NAME->text, args, type, 0);
 228         free(NAME);
 229 }
 230 impl_func(func) ::= FUNCTION REFERENCE NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 231         func = init_impl_func(NAME->text, args, type, 1);
 232         free(NAME);
 233 }
 234
 235 %type impl_def_val {impl_def_val*}
 236 impl_def_val(def) ::= NULL(T). {
 237         def = init_impl_def_val(T);
 238         free(T);
 239 }
 240 impl_def_val(def) ::= NUMBER(T). {
 241         def = init_impl_def_val(T);
 242         free(T);
 243 }
 244 impl_def_val(def) ::= TRUE(T). {
 245         def = init_impl_def_val(T);
 246         free(T);
 247 }
 248 impl_def_val(def) ::= FALSE(T). {
 249         def = init_impl_def_val(T);
 250         free(T);
 251 }
 252 impl_def_val(def) ::= QUOTED_STRING(T). {
 253         def = init_impl_def_val(T);
 254         free(T);
 255 }
 256
 257 %type impl_var {impl_var*}
 258 impl_var(var) ::= DOLLAR NAME(T). {
 259         var = init_impl_var(T->text, 0);
 260         free(T);
 261 }
 262 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 263         var = init_impl_var(T->text, 1);
 264         free(T);
 265 }
 266
 267 %type impl_arg {impl_arg*}
 268 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 269         arg = init_impl_arg(type, var, NULL);
 270 }
 271 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 272         arg = init_impl_arg(type, var, def);
 273 }
 274
 275 %type impl_args {impl_args*}
 276 impl_args(args) ::= LPAREN RPAREN. {
 277         args = NULL;
 278 }
 279 impl_args(args) ::= LPAREN impl_arg_list(args_) RPAREN. {
 280         args = args_;
 281 }
 282 %type impl_arg_list {impl_args*}
 283 impl_arg_list(args) ::= impl_arg(arg). {
 284         args = init_impl_args(arg);
 285 }
 286 impl_arg_list(args) ::= impl_arg_list(args_) COMMA impl_arg(arg). {
 287         args = add_impl_arg(args_, arg);
 288 }
 289
 290 %type impl_stmts {impl_stmts*}
 291 %destructor impl_stmts {free_impl_stmts($$);}
 292 impl_stmts(stmts) ::= impl_stmt(stmt). {
 293         stmts = init_impl_stmts(stmt);
 294 }
 295 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 296         stmts = add_impl_stmt(stmts_, stmt);
 297 }
 298
 299 %type impl_stmt {impl_stmt*}
 300 %destructor impl_stmt {free_impl_stmt($$);}
 301 impl_stmt(stmt) ::= let_stmt(let). {
 302         stmt = init_impl_stmt(PSI_T_LET, let);
 303 }
 304 impl_stmt(stmt) ::= set_stmt(set). {
 305         stmt = init_impl_stmt(PSI_T_SET, set);
 306 }
 307 impl_stmt(stmt) ::= return_stmt(ret). {
 308         stmt = init_impl_stmt(PSI_T_RETURN, ret);
 309 }
 310 impl_stmt(stmt) ::= free_stmt(free). {
 311         stmt = init_impl_stmt(PSI_T_FREE, free);
 312 }
 313
 314 %type let_stmt {let_stmt*}
 315 let_stmt(let) ::= LET decl_var(var) EOS. {
 316         let = init_let_stmt(var, NULL);
 317 }
 318 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 319         let = init_let_stmt(var, val);
 320 }
 321
 322 %type let_value {let_value*}
 323 let_value(val) ::= CALLOC(F) LPAREN NUMBER(N) COMMA decl_type(t) RPAREN. {
 324         val = init_let_value(
 325                 init_let_func(F->type, F->text,
 326                         atol(N->text) * psi_t_size(real_decl_type(t)->type)
 327                 ), NULL, 0
 328         );
 329         free_decl_type(t);
 330         free(F);
 331         free(N);
 332 }
 333 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 334         val = init_let_value(func, var, 0);
 335 }
 336 let_value(val) ::= REFERENCE let_func(func) LPAREN impl_var(var) RPAREN. {
 337         val = init_let_value(func, var, 1);
 338 }
 339 let_value(val) ::= REFERENCE NULL. {
 340         val = init_let_value(NULL, NULL, 1);
 341 }
 342 let_value(val) ::= NULL. {
 343         val = init_let_value(NULL, NULL, 0);
 344 }
 345
 346 %type let_func {let_func*}
 347 let_func(func) ::= STRLEN(T). {
 348         func = init_let_func(T->type, T->text, 0);
 349         free(T);
 350 }
 351 let_func(func) ::= STRVAL(T). {
 352         func = init_let_func(T->type, T->text, 0);
 353         free(T);
 354 }
 355 let_func(func) ::= INTVAL(T). {
 356         func = init_let_func(T->type, T->text, 0);
 357         free(T);
 358 }
 359 let_func(func) ::= FLOATVAL(T). {
 360         func = init_let_func(T->type, T->text, 0);
 361         free(T);
 362 }
 363 let_func(func) ::= BOOLVAL(T). {
 364         func = init_let_func(T->type, T->text, 0);
 365         free(T);
 366 }
 367
 368 %type set_stmt {set_stmt*}
 369 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 370         set = init_set_stmt(var, val);
 371 }
 372
 373 %type set_value {set_value*}
 374 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 375         val = init_set_value(func, vars);
 376 }
 377
 378 %type set_func {set_func*}
 379 set_func(func) ::= TO_ARRAY(T). {
 380         func = init_set_func(T->type, T->text);
 381         free(T);
 382 }
 383 set_func(func) ::= TO_STRING(T). {
 384         func = init_set_func(T->type, T->text);
 385         free(T);
 386 }
 387 set_func(func) ::= TO_INT(T). {
 388         func = init_set_func(T->type, T->text);
 389         free(T);
 390 }
 391 set_func(func) ::= TO_FLOAT(T). {
 392         func = init_set_func(T->type, T->text);
 393         free(T);
 394 }
 395 set_func(func) ::= TO_BOOL(T). {
 396         func = init_set_func(T->type, T->text);
 397         free(T);
 398 }
 399 set_func(func) ::= VOID(T). {
 400         func = init_set_func(T->type, T->text);
 401         free(T);
 402 }
 403
 404 %type return_stmt {return_stmt*}
 405 return_stmt(ret) ::= RETURN set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 406         ret = init_return_stmt(func, var);
 407 }
 408
 409 %type free_stmt {free_stmt*}
 410 free_stmt(free) ::= FREE decl_vars(vars) EOS. {
 411         free = init_free_stmt(vars);
 412 }
 413
 414 %type impl_type {impl_type*}
 415 impl_type(type_) ::= VOID(T). {
 416         type_ = init_impl_type(T->type, T->text);
 417         free(T);
 418 }
 419 impl_type(type_) ::= MIXED(T). {
 420         type_ = init_impl_type(T->type, T->text);
 421         free(T);
 422 }
 423 impl_type(type_) ::= BOOL(T). {
 424         type_ = init_impl_type(T->type, T->text);
 425         free(T);
 426 }
 427 impl_type(type_) ::= INT(T). {
 428         type_ = init_impl_type(T->type, T->text);
 429         free(T);
 430 }
 431 impl_type(type_) ::= FLOAT(T). {
 432         type_ = init_impl_type(T->type, T->text);
 433         free(T);
 434 }
 435 impl_type(type_) ::= STRING(T). {
 436         type_ = init_impl_type(T->type, T->text);
 437         free(T);
 438 }
 439 impl_type(type_) ::= ARRAY(T). {
 440         type_ = init_impl_type(T->type, T->text);
 441         free(T);
 442 }
 443
 444 %type pointers {unsigned}
 445 pointers(p) ::= POINTER. {++p;}
 446 pointers(p) ::= pointers(P) POINTER. {p = P+1;}