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