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

   1 %include {
   2 #include <assert.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <stdarg.h>
   6
   7         static void syntax_error(const char *fn, size_t ln, const char *msg, ...) {
   8                 fprintf(stderr, "WARNING: Syntax error on line %zu in '%s'%s", ln, fn, msg ? ": ": "\n");
   9                 if (msg) {
  10                         va_list argv;
  11
  12                         va_start(argv, msg);
  13                         vfprintf(stderr, msg, argv);
  14                         va_end(argv);
  15                 }
  16         }
  17 }
  18
  19 %name PSI_ParserProc
  20 %token_prefix PSI_T_
  21 %token_type {PSI_Token *}
  22 %token_destructor {free($$);}
  23 %extra_argument {PSI_Lexer *L}
  24 /* TOKEN is defined inside syntax_error */
  25 %syntax_error {
  26         syntax_error(L->fn, L->line, "Unexpected token '%s'.\n", TOKEN->text);
  27 }
  28 file ::= blocks.
  29
  30 blocks ::= block.
  31 blocks ::= blocks block.
  32
  33 block ::= COMMENT.
  34
  35 block ::= LIB(T) QUOTED_STRING(libname) EOS. {
  36         if (L->lib) {
  37                 syntax_error(L->fn, T->line, "Extra 'lib %s' statement has no effect.\n", libname->text);
  38         } else {
  39                 L->lib = strndup(libname->text + 1, libname->size - 2);
  40         }
  41         free(libname);
  42         free(T);
  43 }
  44
  45 block ::= decl(decl). {
  46         L->decls = add_decl(L->decls, decl);
  47 }
  48 block ::= impl(impl). {
  49         L->impls = add_impl(L->impls, impl);
  50 }
  51 block ::= decl_typedef(def). {
  52         L->defs = add_decl_typedef(L->defs, def);
  53 }
  54
  55 %type decl_typedef {decl_typedef*}
  56 decl_typedef(def) ::= TYPEDEF NAME(ALIAS) decl_type(type) EOS. {
  57         def = init_decl_typedef(ALIAS->text, type);
  58         free(ALIAS);
  59 }
  60
  61 %type decl {decl*}
  62 decl(decl) ::= decl_abi(abi) decl_arg(func) LPAREN decl_args(args) RPAREN EOS. {
  63         decl = init_decl(abi, func, args);
  64 }
  65
  66 %type decl_abi {decl_abi*}
  67 decl_abi(abi) ::= NAME(T). {
  68         abi = init_decl_abi(T->text);
  69 }
  70
  71 %type decl_var {decl_var*}
  72 decl_var(var) ::= NAME(T). {
  73         var = init_decl_var(T->text, 0);
  74         free(T);
  75 }
  76 decl_var(var) ::= pointers(p) NAME(T). {
  77         var = init_decl_var(T->text, p);
  78         free(T);
  79 }
  80
  81 %type decl_vars {decl_vars*}
  82 decl_vars(vars) ::= decl_var(var). {
  83         vars = init_decl_vars(var);
  84 }
  85 decl_vars(vars) ::= decl_vars(vars_) COMMA decl_var(var). {
  86         vars = add_decl_var(vars_, var);
  87 }
  88
  89 %type decl_arg {decl_arg*}
  90 decl_arg(arg) ::= decl_type(type) decl_var(var). {
  91         arg = init_decl_arg(type, var);
  92 }
  93
  94 %type decl_args {decl_args*}
  95 decl_args(args) ::= decl_arg(arg). {
  96         args = init_decl_args(arg);
  97 }
  98 decl_args(args) ::= decl_args(args_) COMMA decl_arg(arg). {
  99         args = add_decl_arg(args_, arg);
 100 }
 101
 102 %type decl_type {decl_type*}
 103 decl_type(type_) ::= VOID(T). {
 104         type_ = init_decl_type(T->type, T->text);
 105         free(T);
 106 }
 107 decl_type(type_) ::= INT(T). {
 108         type_ = init_decl_type(T->type, T->text);
 109         free(T);
 110 }
 111 decl_type(type_) ::= FLOAT(T). {
 112         type_ = init_decl_type(T->type, T->text);
 113         free(T);
 114 }
 115 decl_type(type_) ::= DOUBLE(T). {
 116         type_ = init_decl_type(T->type, T->text);
 117         free(T);
 118 }
 119 decl_type(type_) ::= SINT8(T). {
 120         type_ = init_decl_type(T->type, T->text);
 121         free(T);
 122 }
 123 decl_type(type_) ::= UINT8(T). {
 124         type_ = init_decl_type(T->type, T->text);
 125         free(T);
 126 }
 127 decl_type(type_) ::= SINT16(T). {
 128         type_ = init_decl_type(T->type, T->text);
 129         free(T);
 130 }
 131 decl_type(type_) ::= UINT16(T). {
 132         type_ = init_decl_type(T->type, T->text);
 133         free(T);
 134 }
 135 decl_type(type_) ::= SINT32(T). {
 136         type_ = init_decl_type(T->type, T->text);
 137         free(T);
 138 }
 139 decl_type(type_) ::= UINT32(T). {
 140         type_ = init_decl_type(T->type, T->text);
 141         free(T);
 142 }
 143 decl_type(type_) ::= SINT64(T). {
 144         type_ = init_decl_type(T->type, T->text);
 145         free(T);
 146 }
 147 decl_type(type_) ::= UINT64(T). {
 148         type_ = init_decl_type(T->type, T->text);
 149         free(T);
 150 }
 151 decl_type(type_) ::= NAME(T). {
 152         type_ = init_decl_type(T->type, T->text);
 153         free(T);
 154 }
 155
 156 %type impl {impl*}
 157 impl(impl) ::= impl_func(func) LBRACE impl_stmts(stmts) RBRACE. {
 158         impl = init_impl(func, stmts);
 159 }
 160
 161 %type impl_func {impl_func*}
 162 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN impl_args(args) RPAREN COLON impl_type(type). {
 163         func = init_impl_func(NAME->text, args, type);
 164         free(NAME);
 165 }
 166 impl_func(func) ::= FUNCTION NSNAME(NAME) LPAREN RPAREN COLON impl_type(type). {
 167         func = init_impl_func(NAME->text, NULL, type);
 168         free(NAME);
 169 }
 170
 171 %type impl_def_val {impl_def_val*}
 172 impl_def_val(def) ::= NULL. {
 173         /* FIXME */
 174         def = init_impl_def_val();
 175 }
 176 impl_def_val(def) ::= number. {
 177         /* FIXME */
 178         def = init_impl_def_val();
 179 }
 180
 181 %type impl_var {impl_var*}
 182 impl_var(var) ::= DOLLAR NAME(T). {
 183         var = init_impl_var(T->text, 0);
 184         free(T);
 185 }
 186 impl_var(var) ::= REFERENCE DOLLAR NAME(T). {
 187         var = init_impl_var(T->text, 1);
 188         free(T);
 189 }
 190
 191 %type impl_arg {impl_arg*}
 192 impl_arg(arg) ::= impl_type(type) impl_var(var). {
 193         arg = init_impl_arg(type, var, NULL);
 194 }
 195 impl_arg(arg) ::= impl_type(type) impl_var(var) EQUALS impl_def_val(def). {
 196         arg = init_impl_arg(type, var, def);
 197 }
 198
 199 %type impl_args {impl_args*}
 200 impl_args(args) ::= impl_arg(arg). {
 201         args = init_impl_args(arg);
 202 }
 203 impl_args(args) ::= impl_args(args_) COMMA impl_arg(arg). {
 204         args = add_impl_arg(args_, arg);
 205 }
 206
 207 %type impl_stmts {impl_stmts*}
 208 impl_stmts(stmts) ::= impl_stmt(stmt). {
 209         stmts = init_impl_stmts(stmt);
 210 }
 211 impl_stmts(stmts) ::= impl_stmts(stmts_) impl_stmt(stmt). {
 212         stmts = add_impl_stmt(stmts_, stmt);
 213 }
 214
 215 %type impl_stmt {impl_stmt*}
 216 impl_stmt(stmt) ::= let_stmt(let). {
 217         stmt = init_impl_stmt(PSI_T_LET, let);
 218 }
 219 impl_stmt(stmt) ::= set_stmt(set). {
 220         stmt = init_impl_stmt(PSI_T_SET, set);
 221 }
 222 impl_stmt(stmt) ::= ret_stmt(ret). {
 223         stmt = init_impl_stmt(PSI_T_RET, ret);
 224 }
 225
 226 %type let_stmt {let_stmt*}
 227 let_stmt(let) ::= LET decl_var(var) EQUALS let_value(val) EOS. {
 228         let = init_let_stmt(var, val);
 229 }
 230
 231 %type let_value {let_value*}
 232 let_value(val) ::= let_func(func) LPAREN impl_var(var) RPAREN. {
 233         val = init_let_value(func, var, 0);
 234 }
 235 let_value(val) ::= REFERENCE NULL. {
 236         val = init_let_value(NULL, NULL, 1);
 237 }
 238 let_value(val) ::= NULL. {
 239         val = init_let_value(NULL, NULL, 0);
 240 }
 241
 242 %type let_func {let_func*}
 243 let_func(func) ::= STRVAL(T). {
 244         func = init_let_func(T->type, T->text);
 245         free(T);
 246 }
 247 let_func(func) ::= INTVAL(T). {
 248         func = init_let_func(T->type, T->text);
 249         free(T);
 250 }
 251 let_func(func) ::= FLOATVAL(T). {
 252         func = init_let_func(T->type, T->text);
 253         free(T);
 254 }
 255 let_func(func) ::= BOOLVAL(T). {
 256         func = init_let_func(T->type, T->text);
 257         free(T);
 258 }
 259
 260 %type set_stmt {set_stmt*}
 261 set_stmt(set) ::= SET impl_var(var) EQUALS set_value(val) EOS. {
 262         set = init_set_stmt(var, val);
 263 }
 264
 265 %type set_value {set_value*}
 266 set_value(val) ::= set_func(func) LPAREN decl_vars(vars) RPAREN. {
 267         val = init_set_value(func, vars);
 268 }
 269
 270 %type set_func {set_func*}
 271 set_func(func) ::= TO_STRING(T). {
 272         func = init_set_func(T->type, T->text);
 273         free(T);
 274 }
 275 set_func(func) ::= TO_INT(T). {
 276         func = init_set_func(T->type, T->text);
 277         free(T);
 278 }
 279 set_func(func) ::= TO_FLOAT(T). {
 280         func = init_set_func(T->type, T->text);
 281         free(T);
 282 }
 283 set_func(func) ::= TO_BOOL(T). {
 284         func = init_set_func(T->type, T->text);
 285         free(T);
 286 }
 287
 288 %type ret_stmt {ret_stmt*}
 289 ret_stmt(ret) ::= RET set_func(func) LPAREN decl_var(var) RPAREN EOS. {
 290         ret = init_ret_stmt(func, var);
 291 }
 292
 293 %type impl_type {impl_type*}
 294 impl_type(type_) ::= VOID(T). {
 295         type_ = init_impl_type(T->type, T->text);
 296         free(T);
 297 }
 298 impl_type(type_) ::= MIXED(T). {
 299         type_ = init_impl_type(T->type, T->text);
 300         free(T);
 301 }
 302 impl_type(type_) ::= BOOL(T). {
 303         type_ = init_impl_type(T->type, T->text);
 304         free(T);
 305 }
 306 impl_type(type_) ::= INT(T). {
 307         type_ = init_impl_type(T->type, T->text);
 308         free(T);
 309 }
 310 impl_type(type_) ::= FLOAT(T). {
 311         type_ = init_impl_type(T->type, T->text);
 312         free(T);
 313 }
 314 impl_type(type_) ::= STRING(T). {
 315         type_ = init_impl_type(T->type, T->text);
 316         free(T);
 317 }
 318 impl_type(type_) ::= ARRAY(T). {
 319         type_ = init_impl_type(T->type, T->text);
 320         free(T);
 321 }
 322
 323 digits ::= DIGIT.
 324 digits ::= digits DIGIT.
 325 decimals ::= digits DOT digits.
 326 decimals ::= DOT digits.
 327 decimals ::= digits DOT.
 328 number ::= digits.
 329 number ::= PLUS digits.
 330 number ::= MINUS digits.
 331 number ::= decimals.
 332 number ::= MINUS decimals.
 333 number ::= PLUS decimals.
 334
 335 %type pointers {unsigned}
 336 pointers(p) ::= POINTER. {++p;}
 337 pointers(p) ::= pointers(P) POINTER. {p = ++P;}