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
  50 %type const_type {const_type*}
  51 const_type(type_) ::= BOOL(T). {
  52         type_ = init_const_type(T->type, T->text);
  53         free(T);
  54 }
  55 const_type(type_) ::= INT(T). {
  56         type_ = init_const_type(T->type, T->text);
  57         free(T);
  58 }
  59 const_type(type_) ::= FLOAT(T). {
  60         type_ = init_const_type(T->type, T->text);
  61         free(T);
  62 }
  63 const_type(type_) ::= STRING(T). {
  64         type_ = init_const_type(T->type, T->text);
  65         free(T);
  66 }
  67 %type constant {constant*}
  68 constant(constant) ::= CONST const_type(type) NSNAME(T) EQUALS impl_def_val(val) EOS. {
  69         constant = init_constant(type, T->text, val);
  70         free(T);
  71 }
  72
  73 %type decl_typedef {decl_typedef*}
  74 decl_typedef(def) ::= TYPEDEF NAME(ALIAS) decl_type(type) EOS. {
  75         def = init_decl_typedef(ALIAS->text, type);
  76         free(ALIAS);
  77 }
  78
  79 %type decl {decl*}
  80 decl(decl) ::= decl_abi(abi) decl_arg(func) LPAREN decl_args(args) RPAREN EOS. {
  81         decl = init_decl(abi, func, args);
  82 }
  83
  84 %type decl_abi {decl_abi*}
  85 decl_abi(abi) ::= NAME(T). {
  86         abi = init_decl_abi(T->text);
  87         free(T);
  88 }
  89
  90 %type decl_var {decl_var*}
  91 decl_var(var) ::= NAME(T). {
  92         var = init_decl_var(T->text, 0);
  93         free(T);
  94 }
  95 decl_var(var) ::= pointers(p) NAME(T). {
  96         var = init_decl_var(T->text, p);
  97         free(T);
  98 }
  99
 100 %type decl_vars {decl_vars*}
 101 decl_vars(vars) ::= decl_var(var). {
 102         vars = init_decl_vars(var);
 103 }
 104 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
 105         vars = add_decl_var(vars_, var);
 106 }
 107
 108 %type decl_arg {decl_arg*}
 109 decl_arg(arg) ::= decl_type(type) decl_var(var). {
 110         arg = init_decl_arg(type, var);
 111 }
 112
 113 %type decl_args {decl_args*}
 114 decl_args ::= VOID.
 115 decl_args(args) ::= decl_arg(arg). {
 116         args = init_decl_args(arg);
 117 }
 118 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
 119         args = add_decl_arg(args_, arg);
 120 }
 121
 122 %type decl_type {decl_type*}
 123 decl_type(type_) ::= VOID(T). {
 124         type_ = init_decl_type(T->type, T->text);
 125         free(T);
 126 }
 127 decl_type(type_) ::= CHAR(T). {
 128         type_ = init_decl_type(T->type, T->text);
 129         free(T);
 130 }
 131 decl_type(type_) ::= SHORT(T). {
 132         type_ = init_decl_type(T->type, T->text);
 133         free(T);
 134 }
 135 decl_type(type_) ::= INT(T). {
 136         type_ = init_decl_type(T->type, T->text);
 137         free(T);
 138 }
 139 decl_type(type_) ::= LONG(T). {
 140         type_ = init_decl_type(T->type, T->text);
 141         free(T);
 142 }
 143 decl_type(type_) ::= FLOAT(T). {
 144         type_ = init_decl_type(T->type, T->text);
 145         free(T);
 146 }
 147 decl_type(type_) ::= DOUBLE(T). {
 148         type_ = init_decl_type(T->type, T->text);
 149         free(T);
 150 }
 151 decl_type(type_) ::= SINT8(T). {
 152         type_ = init_decl_type(T->type, T->text);
 153         free(T);
 154 }
 155 decl_type(type_) ::= UINT8(T). {
 156         type_ = init_decl_type(T->type, T->text);
 157         free(T);
 158 }
 159 decl_type(type_) ::= SINT16(T). {
 160         type_ = init_decl_type(T->type, T->text);
 161         free(T);
 162 }
 163 decl_type(type_) ::= UINT16(T). {
 164         type_ = init_decl_type(T->type, T->text);
 165         free(T);
 166 }
 167 decl_type(type_) ::= SINT32(T). {
 168         type_ = init_decl_type(T->type, T->text);
 169         free(T);
 170 }
 171 decl_type(type_) ::= UINT32(T). {
 172         type_ = init_decl_type(T->type, T->text);
 173         free(T);
 174 }
 175 decl_type(type_) ::= SINT64(T). {
 176         type_ = init_decl_type(T->type, T->text);
 177         free(T);
 178 }
 179 decl_type(type_) ::= UINT64(T). {
 180         type_ = init_decl_type(T->type, T->text);
 181         free(T);
 182 }
 183 decl_type(type_) ::= NAME(T). {
 184         type_ = init_decl_type(T->type, T->text);
 185         free(T);
 186 }
 187
 188 %type impl {impl*}
 189 %destructor impl {free_impl($$);}
 190 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 191         impl = init_impl(func, stmts);
 192 }
 193
 194 %type impl_func {impl_func*}
 195 impl_func(func) ::= FUNCTION NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 196         func = init_impl_func(NAME->text, args, type, 0);
 197         free(NAME);
 198 }
 199 impl_func(func) ::= FUNCTION REFERENCE NSNAME(NAME) impl_args(args) COLON impl_type(type). {
 200         func = init_impl_func(NAME->text, args, type, 1);
 201         free(NAME);
 202 }
 203
 204 %type impl_def_val {impl_def_val*}
 205 impl_def_val(def) ::= NULL(T). {
 206         def = init_impl_def_val(T);
 207         free(T);
 208 }
 209 impl_def_val(def) ::= NUMBER(T). {
 210         def = init_impl_def_val(T);
 211         free(T);
 212 }
 213 impl_def_val(def) ::= TRUE(T). {
 214         def = init_impl_def_val(T);
 215         free(T);
 216 }
 217 impl_def_val(def) ::= FALSE(T). {
 218         def = init_impl_def_val(T);
 219         free(T);
 220 }
 221 impl_def_val(def) ::= QUOTED_STRING(T). {
 222         def = init_impl_def_val(T);
 223         free(T);
 224 }
 225
 226 %type impl_var {impl_var*}
 227 impl_var(var) ::= DOLLAR NAME(T). {
 228         var = init_impl_var(T->text, 0);
 229         free(T);
 230 }
 231 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 232         var = init_impl_var(T->text, 1);
 233         free(T);
 234 }
 235
 236 %type impl_arg {impl_arg*}
 237 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 238         arg = init_impl_arg(type, var, NULL);
 239 }
 240 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 241         arg = init_impl_arg(type, var, def);
 242 }
 243
 244 %type impl_args {impl_args*}
 245 impl_args(args) ::= LPAREN RPAREN. {
 246         args = NULL;
 247 }
 248 impl_args(args) ::= LPAREN impl_arg_list(args_) RPAREN. {
 249         args = args_;
 250 }
 251 %type impl_arg_list {impl_args*}
 252 impl_arg_list(args) ::= impl_arg(arg). {
 253         args = init_impl_args(arg);
 254 }
 255 impl_arg_list(args) ::= impl_arg_list(args_) COMMA impl_arg(arg). {
 256         args = add_impl_arg(args_, arg);
 257 }
 258
 259 %type impl_stmts {impl_stmts*}
 260 %destructor impl_stmts {free_impl_stmts($$);}
 261 impl_stmts(stmts) ::= impl_stmt(stmt). {
 262         stmts = init_impl_stmts(stmt);
 263 }
 264 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 265         stmts = add_impl_stmt(stmts_, stmt);
 266 }
 267
 268 %type impl_stmt {impl_stmt*}
 269 %destructor impl_stmt {free_impl_stmt($$);}
 270 impl_stmt(stmt) ::= let_stmt(let). {
 271         stmt = init_impl_stmt(PSI_T_LET, let);
 272 }
 273 impl_stmt(stmt) ::= set_stmt(set). {
 274         stmt = init_impl_stmt(PSI_T_SET, set);
 275 }
 276 impl_stmt(stmt) ::= return_stmt(ret). {
 277         stmt = init_impl_stmt(PSI_T_RETURN, ret);
 278 }
 279 impl_stmt(stmt) ::= free_stmt(free). {
 280         stmt = init_impl_stmt(PSI_T_FREE, free);
 281 }
 282
 283 %type let_stmt {let_stmt*}
 284 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 285         let = init_let_stmt(var, val);
 286 }
 287
 288 %type let_value {let_value*}
 289 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 290         val = init_let_value(func, var, 0);
 291 }
 292 let_value(val) ::= REFERENCE let_func(func) LPAREN impl_var(var) RPAREN. {
 293         val = init_let_value(func, var, 1);
 294 }
 295 let_value(val) ::= REFERENCE NULL. {
 296         val = init_let_value(NULL, NULL, 1);
 297 }
 298 let_value(val) ::= NULL. {
 299         val = init_let_value(NULL, NULL, 0);
 300 }
 301
 302 %type let_func {let_func*}
 303 let_func(func) ::= STRLEN(T). {
 304         func = init_let_func(T->type, T->text);
 305         free(T);
 306 }
 307 let_func(func) ::= STRVAL(T). {
 308         func = init_let_func(T->type, T->text);
 309         free(T);
 310 }
 311 let_func(func) ::= INTVAL(T). {
 312         func = init_let_func(T->type, T->text);
 313         free(T);
 314 }
 315 let_func(func) ::= FLOATVAL(T). {
 316         func = init_let_func(T->type, T->text);
 317         free(T);
 318 }
 319 let_func(func) ::= BOOLVAL(T). {
 320         func = init_let_func(T->type, T->text);
 321         free(T);
 322 }
 323
 324 %type set_stmt {set_stmt*}
 325 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 326         set = init_set_stmt(var, val);
 327 }
 328
 329 %type set_value {set_value*}
 330 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 331         val = init_set_value(func, vars);
 332 }
 333
 334 %type set_func {set_func*}
 335 set_func(func) ::= TO_STRING(T). {
 336         func = init_set_func(T->type, T->text);
 337         free(T);
 338 }
 339 set_func(func) ::= TO_INT(T). {
 340         func = init_set_func(T->type, T->text);
 341         free(T);
 342 }
 343 set_func(func) ::= TO_FLOAT(T). {
 344         func = init_set_func(T->type, T->text);
 345         free(T);
 346 }
 347 set_func(func) ::= TO_BOOL(T). {
 348         func = init_set_func(T->type, T->text);
 349         free(T);
 350 }
 351 set_func(func) ::= VOID(T). {
 352         func = init_set_func(T->type, T->text);
 353         free(T);
 354 }
 355
 356 %type return_stmt {return_stmt*}
 357 return_stmt(ret) ::= RETURN set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 358         ret = init_return_stmt(func, var);
 359 }
 360
 361 %type free_stmt {free_stmt*}
 362 free_stmt(free) ::= FREE decl_vars(vars) EOS. {
 363         free = init_free_stmt(vars);
 364 }
 365
 366 %type impl_type {impl_type*}
 367 impl_type(type_) ::= VOID(T). {
 368         type_ = init_impl_type(T->type, T->text);
 369         free(T);
 370 }
 371 impl_type(type_) ::= MIXED(T). {
 372         type_ = init_impl_type(T->type, T->text);
 373         free(T);
 374 }
 375 impl_type(type_) ::= BOOL(T). {
 376         type_ = init_impl_type(T->type, T->text);
 377         free(T);
 378 }
 379 impl_type(type_) ::= INT(T). {
 380         type_ = init_impl_type(T->type, T->text);
 381         free(T);
 382 }
 383 impl_type(type_) ::= FLOAT(T). {
 384         type_ = init_impl_type(T->type, T->text);
 385         free(T);
 386 }
 387 impl_type(type_) ::= STRING(T). {
 388         type_ = init_impl_type(T->type, T->text);
 389         free(T);
 390 }
 391 impl_type(type_) ::= ARRAY(T). {
 392         type_ = init_impl_type(T->type, T->text);
 393         free(T);
 394 }
 395
 396 %type pointers {unsigned}
 397 pointers(p) ::= POINTER. {++p;}
 398 pointers(p) ::= pointers(P) POINTER. {p = P+1;}