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