| 1 | /* YACC parser for Pascal expressions, for GDB. |
| 2 | Copyright (C) 2000-2014 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | /* This file is derived from c-exp.y */ |
| 20 | |
| 21 | /* Parse a Pascal expression from text in a string, |
| 22 | and return the result as a struct expression pointer. |
| 23 | That structure contains arithmetic operations in reverse polish, |
| 24 | with constants represented by operations that are followed by special data. |
| 25 | See expression.h for the details of the format. |
| 26 | What is important here is that it can be built up sequentially |
| 27 | during the process of parsing; the lower levels of the tree always |
| 28 | come first in the result. |
| 29 | |
| 30 | Note that malloc's and realloc's in this file are transformed to |
| 31 | xmalloc and xrealloc respectively by the same sed command in the |
| 32 | makefile that remaps any other malloc/realloc inserted by the parser |
| 33 | generator. Doing this with #defines and trying to control the interaction |
| 34 | with include files (<malloc.h> and <stdlib.h> for example) just became |
| 35 | too messy, particularly when such includes can be inserted at random |
| 36 | times by the parser generator. */ |
| 37 | |
| 38 | /* Known bugs or limitations: |
| 39 | - pascal string operations are not supported at all. |
| 40 | - there are some problems with boolean types. |
| 41 | - Pascal type hexadecimal constants are not supported |
| 42 | because they conflict with the internal variables format. |
| 43 | Probably also lots of other problems, less well defined PM. */ |
| 44 | %{ |
| 45 | |
| 46 | #include "defs.h" |
| 47 | #include <string.h> |
| 48 | #include <ctype.h> |
| 49 | #include "expression.h" |
| 50 | #include "value.h" |
| 51 | #include "parser-defs.h" |
| 52 | #include "language.h" |
| 53 | #include "p-lang.h" |
| 54 | #include "bfd.h" /* Required by objfiles.h. */ |
| 55 | #include "symfile.h" /* Required by objfiles.h. */ |
| 56 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols. */ |
| 57 | #include "block.h" |
| 58 | #include "completer.h" |
| 59 | |
| 60 | #define parse_type builtin_type (parse_gdbarch) |
| 61 | |
| 62 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), |
| 63 | as well as gratuitiously global symbol names, so we can have multiple |
| 64 | yacc generated parsers in gdb. Note that these are only the variables |
| 65 | produced by yacc. If other parser generators (bison, byacc, etc) produce |
| 66 | additional global names that conflict at link time, then those parser |
| 67 | generators need to be fixed instead of adding those names to this list. */ |
| 68 | |
| 69 | #define yymaxdepth pascal_maxdepth |
| 70 | #define yyparse pascal_parse |
| 71 | #define yylex pascal_lex |
| 72 | #define yyerror pascal_error |
| 73 | #define yylval pascal_lval |
| 74 | #define yychar pascal_char |
| 75 | #define yydebug pascal_debug |
| 76 | #define yypact pascal_pact |
| 77 | #define yyr1 pascal_r1 |
| 78 | #define yyr2 pascal_r2 |
| 79 | #define yydef pascal_def |
| 80 | #define yychk pascal_chk |
| 81 | #define yypgo pascal_pgo |
| 82 | #define yyact pascal_act |
| 83 | #define yyexca pascal_exca |
| 84 | #define yyerrflag pascal_errflag |
| 85 | #define yynerrs pascal_nerrs |
| 86 | #define yyps pascal_ps |
| 87 | #define yypv pascal_pv |
| 88 | #define yys pascal_s |
| 89 | #define yy_yys pascal_yys |
| 90 | #define yystate pascal_state |
| 91 | #define yytmp pascal_tmp |
| 92 | #define yyv pascal_v |
| 93 | #define yy_yyv pascal_yyv |
| 94 | #define yyval pascal_val |
| 95 | #define yylloc pascal_lloc |
| 96 | #define yyreds pascal_reds /* With YYDEBUG defined */ |
| 97 | #define yytoks pascal_toks /* With YYDEBUG defined */ |
| 98 | #define yyname pascal_name /* With YYDEBUG defined */ |
| 99 | #define yyrule pascal_rule /* With YYDEBUG defined */ |
| 100 | #define yylhs pascal_yylhs |
| 101 | #define yylen pascal_yylen |
| 102 | #define yydefred pascal_yydefred |
| 103 | #define yydgoto pascal_yydgoto |
| 104 | #define yysindex pascal_yysindex |
| 105 | #define yyrindex pascal_yyrindex |
| 106 | #define yygindex pascal_yygindex |
| 107 | #define yytable pascal_yytable |
| 108 | #define yycheck pascal_yycheck |
| 109 | #define yyss pascal_yyss |
| 110 | #define yysslim pascal_yysslim |
| 111 | #define yyssp pascal_yyssp |
| 112 | #define yystacksize pascal_yystacksize |
| 113 | #define yyvs pascal_yyvs |
| 114 | #define yyvsp pascal_yyvsp |
| 115 | |
| 116 | #ifndef YYDEBUG |
| 117 | #define YYDEBUG 1 /* Default to yydebug support */ |
| 118 | #endif |
| 119 | |
| 120 | #define YYFPRINTF parser_fprintf |
| 121 | |
| 122 | int yyparse (void); |
| 123 | |
| 124 | static int yylex (void); |
| 125 | |
| 126 | void yyerror (char *); |
| 127 | |
| 128 | static char *uptok (const char *, int); |
| 129 | %} |
| 130 | |
| 131 | /* Although the yacc "value" of an expression is not used, |
| 132 | since the result is stored in the structure being created, |
| 133 | other node types do have values. */ |
| 134 | |
| 135 | %union |
| 136 | { |
| 137 | LONGEST lval; |
| 138 | struct { |
| 139 | LONGEST val; |
| 140 | struct type *type; |
| 141 | } typed_val_int; |
| 142 | struct { |
| 143 | DOUBLEST dval; |
| 144 | struct type *type; |
| 145 | } typed_val_float; |
| 146 | struct symbol *sym; |
| 147 | struct type *tval; |
| 148 | struct stoken sval; |
| 149 | struct ttype tsym; |
| 150 | struct symtoken ssym; |
| 151 | int voidval; |
| 152 | struct block *bval; |
| 153 | enum exp_opcode opcode; |
| 154 | struct internalvar *ivar; |
| 155 | |
| 156 | struct type **tvec; |
| 157 | int *ivec; |
| 158 | } |
| 159 | |
| 160 | %{ |
| 161 | /* YYSTYPE gets defined by %union */ |
| 162 | static int parse_number (const char *, int, int, YYSTYPE *); |
| 163 | |
| 164 | static struct type *current_type; |
| 165 | static struct internalvar *intvar; |
| 166 | static int leftdiv_is_integer; |
| 167 | static void push_current_type (void); |
| 168 | static void pop_current_type (void); |
| 169 | static int search_field; |
| 170 | %} |
| 171 | |
| 172 | %type <voidval> exp exp1 type_exp start normal_start variable qualified_name |
| 173 | %type <tval> type typebase |
| 174 | /* %type <bval> block */ |
| 175 | |
| 176 | /* Fancy type parsing. */ |
| 177 | %type <tval> ptype |
| 178 | |
| 179 | %token <typed_val_int> INT |
| 180 | %token <typed_val_float> FLOAT |
| 181 | |
| 182 | /* Both NAME and TYPENAME tokens represent symbols in the input, |
| 183 | and both convey their data as strings. |
| 184 | But a TYPENAME is a string that happens to be defined as a typedef |
| 185 | or builtin type name (such as int or char) |
| 186 | and a NAME is any other symbol. |
| 187 | Contexts where this distinction is not important can use the |
| 188 | nonterminal "name", which matches either NAME or TYPENAME. */ |
| 189 | |
| 190 | %token <sval> STRING |
| 191 | %token <sval> FIELDNAME |
| 192 | %token <voidval> COMPLETE |
| 193 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ |
| 194 | %token <tsym> TYPENAME |
| 195 | %type <sval> name |
| 196 | %type <ssym> name_not_typename |
| 197 | |
| 198 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, |
| 199 | but which would parse as a valid number in the current input radix. |
| 200 | E.g. "c" when input_radix==16. Depending on the parse, it will be |
| 201 | turned into a name or into a number. */ |
| 202 | |
| 203 | %token <ssym> NAME_OR_INT |
| 204 | |
| 205 | %token STRUCT CLASS SIZEOF COLONCOLON |
| 206 | %token ERROR |
| 207 | |
| 208 | /* Special type cases, put in to allow the parser to distinguish different |
| 209 | legal basetypes. */ |
| 210 | |
| 211 | %token <voidval> VARIABLE |
| 212 | |
| 213 | |
| 214 | /* Object pascal */ |
| 215 | %token THIS |
| 216 | %token <lval> TRUEKEYWORD FALSEKEYWORD |
| 217 | |
| 218 | %left ',' |
| 219 | %left ABOVE_COMMA |
| 220 | %right ASSIGN |
| 221 | %left NOT |
| 222 | %left OR |
| 223 | %left XOR |
| 224 | %left ANDAND |
| 225 | %left '=' NOTEQUAL |
| 226 | %left '<' '>' LEQ GEQ |
| 227 | %left LSH RSH DIV MOD |
| 228 | %left '@' |
| 229 | %left '+' '-' |
| 230 | %left '*' '/' |
| 231 | %right UNARY INCREMENT DECREMENT |
| 232 | %right ARROW '.' '[' '(' |
| 233 | %left '^' |
| 234 | %token <ssym> BLOCKNAME |
| 235 | %type <bval> block |
| 236 | %left COLONCOLON |
| 237 | |
| 238 | \f |
| 239 | %% |
| 240 | |
| 241 | start : { current_type = NULL; |
| 242 | intvar = NULL; |
| 243 | search_field = 0; |
| 244 | leftdiv_is_integer = 0; |
| 245 | } |
| 246 | normal_start {} |
| 247 | ; |
| 248 | |
| 249 | normal_start : |
| 250 | exp1 |
| 251 | | type_exp |
| 252 | ; |
| 253 | |
| 254 | type_exp: type |
| 255 | { write_exp_elt_opcode(OP_TYPE); |
| 256 | write_exp_elt_type($1); |
| 257 | write_exp_elt_opcode(OP_TYPE); |
| 258 | current_type = $1; } ; |
| 259 | |
| 260 | /* Expressions, including the comma operator. */ |
| 261 | exp1 : exp |
| 262 | | exp1 ',' exp |
| 263 | { write_exp_elt_opcode (BINOP_COMMA); } |
| 264 | ; |
| 265 | |
| 266 | /* Expressions, not including the comma operator. */ |
| 267 | exp : exp '^' %prec UNARY |
| 268 | { write_exp_elt_opcode (UNOP_IND); |
| 269 | if (current_type) |
| 270 | current_type = TYPE_TARGET_TYPE (current_type); } |
| 271 | ; |
| 272 | |
| 273 | exp : '@' exp %prec UNARY |
| 274 | { write_exp_elt_opcode (UNOP_ADDR); |
| 275 | if (current_type) |
| 276 | current_type = TYPE_POINTER_TYPE (current_type); } |
| 277 | ; |
| 278 | |
| 279 | exp : '-' exp %prec UNARY |
| 280 | { write_exp_elt_opcode (UNOP_NEG); } |
| 281 | ; |
| 282 | |
| 283 | exp : NOT exp %prec UNARY |
| 284 | { write_exp_elt_opcode (UNOP_LOGICAL_NOT); } |
| 285 | ; |
| 286 | |
| 287 | exp : INCREMENT '(' exp ')' %prec UNARY |
| 288 | { write_exp_elt_opcode (UNOP_PREINCREMENT); } |
| 289 | ; |
| 290 | |
| 291 | exp : DECREMENT '(' exp ')' %prec UNARY |
| 292 | { write_exp_elt_opcode (UNOP_PREDECREMENT); } |
| 293 | ; |
| 294 | |
| 295 | |
| 296 | field_exp : exp '.' %prec UNARY |
| 297 | { search_field = 1; } |
| 298 | ; |
| 299 | |
| 300 | exp : field_exp FIELDNAME |
| 301 | { write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 302 | write_exp_string ($2); |
| 303 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 304 | search_field = 0; |
| 305 | if (current_type) |
| 306 | { |
| 307 | while (TYPE_CODE (current_type) |
| 308 | == TYPE_CODE_PTR) |
| 309 | current_type = |
| 310 | TYPE_TARGET_TYPE (current_type); |
| 311 | current_type = lookup_struct_elt_type ( |
| 312 | current_type, $2.ptr, 0); |
| 313 | } |
| 314 | } |
| 315 | ; |
| 316 | |
| 317 | |
| 318 | exp : field_exp name |
| 319 | { write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 320 | write_exp_string ($2); |
| 321 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 322 | search_field = 0; |
| 323 | if (current_type) |
| 324 | { |
| 325 | while (TYPE_CODE (current_type) |
| 326 | == TYPE_CODE_PTR) |
| 327 | current_type = |
| 328 | TYPE_TARGET_TYPE (current_type); |
| 329 | current_type = lookup_struct_elt_type ( |
| 330 | current_type, $2.ptr, 0); |
| 331 | } |
| 332 | } |
| 333 | ; |
| 334 | exp : field_exp name COMPLETE |
| 335 | { mark_struct_expression (); |
| 336 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 337 | write_exp_string ($2); |
| 338 | write_exp_elt_opcode (STRUCTOP_STRUCT); } |
| 339 | ; |
| 340 | exp : field_exp COMPLETE |
| 341 | { struct stoken s; |
| 342 | mark_struct_expression (); |
| 343 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 344 | s.ptr = ""; |
| 345 | s.length = 0; |
| 346 | write_exp_string (s); |
| 347 | write_exp_elt_opcode (STRUCTOP_STRUCT); } |
| 348 | ; |
| 349 | |
| 350 | exp : exp '[' |
| 351 | /* We need to save the current_type value. */ |
| 352 | { const char *arrayname; |
| 353 | int arrayfieldindex; |
| 354 | arrayfieldindex = is_pascal_string_type ( |
| 355 | current_type, NULL, NULL, |
| 356 | NULL, NULL, &arrayname); |
| 357 | if (arrayfieldindex) |
| 358 | { |
| 359 | struct stoken stringsval; |
| 360 | char *buf; |
| 361 | |
| 362 | buf = alloca (strlen (arrayname) + 1); |
| 363 | stringsval.ptr = buf; |
| 364 | stringsval.length = strlen (arrayname); |
| 365 | strcpy (buf, arrayname); |
| 366 | current_type = TYPE_FIELD_TYPE (current_type, |
| 367 | arrayfieldindex - 1); |
| 368 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 369 | write_exp_string (stringsval); |
| 370 | write_exp_elt_opcode (STRUCTOP_STRUCT); |
| 371 | } |
| 372 | push_current_type (); } |
| 373 | exp1 ']' |
| 374 | { pop_current_type (); |
| 375 | write_exp_elt_opcode (BINOP_SUBSCRIPT); |
| 376 | if (current_type) |
| 377 | current_type = TYPE_TARGET_TYPE (current_type); } |
| 378 | ; |
| 379 | |
| 380 | exp : exp '(' |
| 381 | /* This is to save the value of arglist_len |
| 382 | being accumulated by an outer function call. */ |
| 383 | { push_current_type (); |
| 384 | start_arglist (); } |
| 385 | arglist ')' %prec ARROW |
| 386 | { write_exp_elt_opcode (OP_FUNCALL); |
| 387 | write_exp_elt_longcst ((LONGEST) end_arglist ()); |
| 388 | write_exp_elt_opcode (OP_FUNCALL); |
| 389 | pop_current_type (); |
| 390 | if (current_type) |
| 391 | current_type = TYPE_TARGET_TYPE (current_type); |
| 392 | } |
| 393 | ; |
| 394 | |
| 395 | arglist : |
| 396 | | exp |
| 397 | { arglist_len = 1; } |
| 398 | | arglist ',' exp %prec ABOVE_COMMA |
| 399 | { arglist_len++; } |
| 400 | ; |
| 401 | |
| 402 | exp : type '(' exp ')' %prec UNARY |
| 403 | { if (current_type) |
| 404 | { |
| 405 | /* Allow automatic dereference of classes. */ |
| 406 | if ((TYPE_CODE (current_type) == TYPE_CODE_PTR) |
| 407 | && (TYPE_CODE (TYPE_TARGET_TYPE (current_type)) == TYPE_CODE_CLASS) |
| 408 | && (TYPE_CODE ($1) == TYPE_CODE_CLASS)) |
| 409 | write_exp_elt_opcode (UNOP_IND); |
| 410 | } |
| 411 | write_exp_elt_opcode (UNOP_CAST); |
| 412 | write_exp_elt_type ($1); |
| 413 | write_exp_elt_opcode (UNOP_CAST); |
| 414 | current_type = $1; } |
| 415 | ; |
| 416 | |
| 417 | exp : '(' exp1 ')' |
| 418 | { } |
| 419 | ; |
| 420 | |
| 421 | /* Binary operators in order of decreasing precedence. */ |
| 422 | |
| 423 | exp : exp '*' exp |
| 424 | { write_exp_elt_opcode (BINOP_MUL); } |
| 425 | ; |
| 426 | |
| 427 | exp : exp '/' { |
| 428 | if (current_type && is_integral_type (current_type)) |
| 429 | leftdiv_is_integer = 1; |
| 430 | } |
| 431 | exp |
| 432 | { |
| 433 | if (leftdiv_is_integer && current_type |
| 434 | && is_integral_type (current_type)) |
| 435 | { |
| 436 | write_exp_elt_opcode (UNOP_CAST); |
| 437 | write_exp_elt_type (parse_type->builtin_long_double); |
| 438 | current_type = parse_type->builtin_long_double; |
| 439 | write_exp_elt_opcode (UNOP_CAST); |
| 440 | leftdiv_is_integer = 0; |
| 441 | } |
| 442 | |
| 443 | write_exp_elt_opcode (BINOP_DIV); |
| 444 | } |
| 445 | ; |
| 446 | |
| 447 | exp : exp DIV exp |
| 448 | { write_exp_elt_opcode (BINOP_INTDIV); } |
| 449 | ; |
| 450 | |
| 451 | exp : exp MOD exp |
| 452 | { write_exp_elt_opcode (BINOP_REM); } |
| 453 | ; |
| 454 | |
| 455 | exp : exp '+' exp |
| 456 | { write_exp_elt_opcode (BINOP_ADD); } |
| 457 | ; |
| 458 | |
| 459 | exp : exp '-' exp |
| 460 | { write_exp_elt_opcode (BINOP_SUB); } |
| 461 | ; |
| 462 | |
| 463 | exp : exp LSH exp |
| 464 | { write_exp_elt_opcode (BINOP_LSH); } |
| 465 | ; |
| 466 | |
| 467 | exp : exp RSH exp |
| 468 | { write_exp_elt_opcode (BINOP_RSH); } |
| 469 | ; |
| 470 | |
| 471 | exp : exp '=' exp |
| 472 | { write_exp_elt_opcode (BINOP_EQUAL); |
| 473 | current_type = parse_type->builtin_bool; |
| 474 | } |
| 475 | ; |
| 476 | |
| 477 | exp : exp NOTEQUAL exp |
| 478 | { write_exp_elt_opcode (BINOP_NOTEQUAL); |
| 479 | current_type = parse_type->builtin_bool; |
| 480 | } |
| 481 | ; |
| 482 | |
| 483 | exp : exp LEQ exp |
| 484 | { write_exp_elt_opcode (BINOP_LEQ); |
| 485 | current_type = parse_type->builtin_bool; |
| 486 | } |
| 487 | ; |
| 488 | |
| 489 | exp : exp GEQ exp |
| 490 | { write_exp_elt_opcode (BINOP_GEQ); |
| 491 | current_type = parse_type->builtin_bool; |
| 492 | } |
| 493 | ; |
| 494 | |
| 495 | exp : exp '<' exp |
| 496 | { write_exp_elt_opcode (BINOP_LESS); |
| 497 | current_type = parse_type->builtin_bool; |
| 498 | } |
| 499 | ; |
| 500 | |
| 501 | exp : exp '>' exp |
| 502 | { write_exp_elt_opcode (BINOP_GTR); |
| 503 | current_type = parse_type->builtin_bool; |
| 504 | } |
| 505 | ; |
| 506 | |
| 507 | exp : exp ANDAND exp |
| 508 | { write_exp_elt_opcode (BINOP_BITWISE_AND); } |
| 509 | ; |
| 510 | |
| 511 | exp : exp XOR exp |
| 512 | { write_exp_elt_opcode (BINOP_BITWISE_XOR); } |
| 513 | ; |
| 514 | |
| 515 | exp : exp OR exp |
| 516 | { write_exp_elt_opcode (BINOP_BITWISE_IOR); } |
| 517 | ; |
| 518 | |
| 519 | exp : exp ASSIGN exp |
| 520 | { write_exp_elt_opcode (BINOP_ASSIGN); } |
| 521 | ; |
| 522 | |
| 523 | exp : TRUEKEYWORD |
| 524 | { write_exp_elt_opcode (OP_BOOL); |
| 525 | write_exp_elt_longcst ((LONGEST) $1); |
| 526 | current_type = parse_type->builtin_bool; |
| 527 | write_exp_elt_opcode (OP_BOOL); } |
| 528 | ; |
| 529 | |
| 530 | exp : FALSEKEYWORD |
| 531 | { write_exp_elt_opcode (OP_BOOL); |
| 532 | write_exp_elt_longcst ((LONGEST) $1); |
| 533 | current_type = parse_type->builtin_bool; |
| 534 | write_exp_elt_opcode (OP_BOOL); } |
| 535 | ; |
| 536 | |
| 537 | exp : INT |
| 538 | { write_exp_elt_opcode (OP_LONG); |
| 539 | write_exp_elt_type ($1.type); |
| 540 | current_type = $1.type; |
| 541 | write_exp_elt_longcst ((LONGEST)($1.val)); |
| 542 | write_exp_elt_opcode (OP_LONG); } |
| 543 | ; |
| 544 | |
| 545 | exp : NAME_OR_INT |
| 546 | { YYSTYPE val; |
| 547 | parse_number ($1.stoken.ptr, |
| 548 | $1.stoken.length, 0, &val); |
| 549 | write_exp_elt_opcode (OP_LONG); |
| 550 | write_exp_elt_type (val.typed_val_int.type); |
| 551 | current_type = val.typed_val_int.type; |
| 552 | write_exp_elt_longcst ((LONGEST) |
| 553 | val.typed_val_int.val); |
| 554 | write_exp_elt_opcode (OP_LONG); |
| 555 | } |
| 556 | ; |
| 557 | |
| 558 | |
| 559 | exp : FLOAT |
| 560 | { write_exp_elt_opcode (OP_DOUBLE); |
| 561 | write_exp_elt_type ($1.type); |
| 562 | current_type = $1.type; |
| 563 | write_exp_elt_dblcst ($1.dval); |
| 564 | write_exp_elt_opcode (OP_DOUBLE); } |
| 565 | ; |
| 566 | |
| 567 | exp : variable |
| 568 | ; |
| 569 | |
| 570 | exp : VARIABLE |
| 571 | /* Already written by write_dollar_variable. |
| 572 | Handle current_type. */ |
| 573 | { if (intvar) { |
| 574 | struct value * val, * mark; |
| 575 | |
| 576 | mark = value_mark (); |
| 577 | val = value_of_internalvar (parse_gdbarch, |
| 578 | intvar); |
| 579 | current_type = value_type (val); |
| 580 | value_release_to_mark (mark); |
| 581 | } |
| 582 | } |
| 583 | ; |
| 584 | |
| 585 | exp : SIZEOF '(' type ')' %prec UNARY |
| 586 | { write_exp_elt_opcode (OP_LONG); |
| 587 | write_exp_elt_type (parse_type->builtin_int); |
| 588 | current_type = parse_type->builtin_int; |
| 589 | CHECK_TYPEDEF ($3); |
| 590 | write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3)); |
| 591 | write_exp_elt_opcode (OP_LONG); } |
| 592 | ; |
| 593 | |
| 594 | exp : SIZEOF '(' exp ')' %prec UNARY |
| 595 | { write_exp_elt_opcode (UNOP_SIZEOF); |
| 596 | current_type = parse_type->builtin_int; } |
| 597 | |
| 598 | exp : STRING |
| 599 | { /* C strings are converted into array constants with |
| 600 | an explicit null byte added at the end. Thus |
| 601 | the array upper bound is the string length. |
| 602 | There is no such thing in C as a completely empty |
| 603 | string. */ |
| 604 | const char *sp = $1.ptr; int count = $1.length; |
| 605 | |
| 606 | while (count-- > 0) |
| 607 | { |
| 608 | write_exp_elt_opcode (OP_LONG); |
| 609 | write_exp_elt_type (parse_type->builtin_char); |
| 610 | write_exp_elt_longcst ((LONGEST)(*sp++)); |
| 611 | write_exp_elt_opcode (OP_LONG); |
| 612 | } |
| 613 | write_exp_elt_opcode (OP_LONG); |
| 614 | write_exp_elt_type (parse_type->builtin_char); |
| 615 | write_exp_elt_longcst ((LONGEST)'\0'); |
| 616 | write_exp_elt_opcode (OP_LONG); |
| 617 | write_exp_elt_opcode (OP_ARRAY); |
| 618 | write_exp_elt_longcst ((LONGEST) 0); |
| 619 | write_exp_elt_longcst ((LONGEST) ($1.length)); |
| 620 | write_exp_elt_opcode (OP_ARRAY); } |
| 621 | ; |
| 622 | |
| 623 | /* Object pascal */ |
| 624 | exp : THIS |
| 625 | { |
| 626 | struct value * this_val; |
| 627 | struct type * this_type; |
| 628 | write_exp_elt_opcode (OP_THIS); |
| 629 | write_exp_elt_opcode (OP_THIS); |
| 630 | /* We need type of this. */ |
| 631 | this_val = value_of_this_silent (parse_language); |
| 632 | if (this_val) |
| 633 | this_type = value_type (this_val); |
| 634 | else |
| 635 | this_type = NULL; |
| 636 | if (this_type) |
| 637 | { |
| 638 | if (TYPE_CODE (this_type) == TYPE_CODE_PTR) |
| 639 | { |
| 640 | this_type = TYPE_TARGET_TYPE (this_type); |
| 641 | write_exp_elt_opcode (UNOP_IND); |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | current_type = this_type; |
| 646 | } |
| 647 | ; |
| 648 | |
| 649 | /* end of object pascal. */ |
| 650 | |
| 651 | block : BLOCKNAME |
| 652 | { |
| 653 | if ($1.sym != 0) |
| 654 | $$ = SYMBOL_BLOCK_VALUE ($1.sym); |
| 655 | else |
| 656 | { |
| 657 | struct symtab *tem = |
| 658 | lookup_symtab (copy_name ($1.stoken)); |
| 659 | if (tem) |
| 660 | $$ = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem), |
| 661 | STATIC_BLOCK); |
| 662 | else |
| 663 | error (_("No file or function \"%s\"."), |
| 664 | copy_name ($1.stoken)); |
| 665 | } |
| 666 | } |
| 667 | ; |
| 668 | |
| 669 | block : block COLONCOLON name |
| 670 | { struct symbol *tem |
| 671 | = lookup_symbol (copy_name ($3), $1, |
| 672 | VAR_DOMAIN, NULL); |
| 673 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) |
| 674 | error (_("No function \"%s\" in specified context."), |
| 675 | copy_name ($3)); |
| 676 | $$ = SYMBOL_BLOCK_VALUE (tem); } |
| 677 | ; |
| 678 | |
| 679 | variable: block COLONCOLON name |
| 680 | { struct symbol *sym; |
| 681 | sym = lookup_symbol (copy_name ($3), $1, |
| 682 | VAR_DOMAIN, NULL); |
| 683 | if (sym == 0) |
| 684 | error (_("No symbol \"%s\" in specified context."), |
| 685 | copy_name ($3)); |
| 686 | |
| 687 | write_exp_elt_opcode (OP_VAR_VALUE); |
| 688 | /* block_found is set by lookup_symbol. */ |
| 689 | write_exp_elt_block (block_found); |
| 690 | write_exp_elt_sym (sym); |
| 691 | write_exp_elt_opcode (OP_VAR_VALUE); } |
| 692 | ; |
| 693 | |
| 694 | qualified_name: typebase COLONCOLON name |
| 695 | { |
| 696 | struct type *type = $1; |
| 697 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 698 | && TYPE_CODE (type) != TYPE_CODE_UNION) |
| 699 | error (_("`%s' is not defined as an aggregate type."), |
| 700 | TYPE_NAME (type)); |
| 701 | |
| 702 | write_exp_elt_opcode (OP_SCOPE); |
| 703 | write_exp_elt_type (type); |
| 704 | write_exp_string ($3); |
| 705 | write_exp_elt_opcode (OP_SCOPE); |
| 706 | } |
| 707 | ; |
| 708 | |
| 709 | variable: qualified_name |
| 710 | | COLONCOLON name |
| 711 | { |
| 712 | char *name = copy_name ($2); |
| 713 | struct symbol *sym; |
| 714 | struct bound_minimal_symbol msymbol; |
| 715 | |
| 716 | sym = |
| 717 | lookup_symbol (name, (const struct block *) NULL, |
| 718 | VAR_DOMAIN, NULL); |
| 719 | if (sym) |
| 720 | { |
| 721 | write_exp_elt_opcode (OP_VAR_VALUE); |
| 722 | write_exp_elt_block (NULL); |
| 723 | write_exp_elt_sym (sym); |
| 724 | write_exp_elt_opcode (OP_VAR_VALUE); |
| 725 | break; |
| 726 | } |
| 727 | |
| 728 | msymbol = lookup_bound_minimal_symbol (name); |
| 729 | if (msymbol.minsym != NULL) |
| 730 | write_exp_msymbol (msymbol); |
| 731 | else if (!have_full_symbols () |
| 732 | && !have_partial_symbols ()) |
| 733 | error (_("No symbol table is loaded. " |
| 734 | "Use the \"file\" command.")); |
| 735 | else |
| 736 | error (_("No symbol \"%s\" in current context."), |
| 737 | name); |
| 738 | } |
| 739 | ; |
| 740 | |
| 741 | variable: name_not_typename |
| 742 | { struct symbol *sym = $1.sym; |
| 743 | |
| 744 | if (sym) |
| 745 | { |
| 746 | if (symbol_read_needs_frame (sym)) |
| 747 | { |
| 748 | if (innermost_block == 0 |
| 749 | || contained_in (block_found, |
| 750 | innermost_block)) |
| 751 | innermost_block = block_found; |
| 752 | } |
| 753 | |
| 754 | write_exp_elt_opcode (OP_VAR_VALUE); |
| 755 | /* We want to use the selected frame, not |
| 756 | another more inner frame which happens to |
| 757 | be in the same block. */ |
| 758 | write_exp_elt_block (NULL); |
| 759 | write_exp_elt_sym (sym); |
| 760 | write_exp_elt_opcode (OP_VAR_VALUE); |
| 761 | current_type = sym->type; } |
| 762 | else if ($1.is_a_field_of_this) |
| 763 | { |
| 764 | struct value * this_val; |
| 765 | struct type * this_type; |
| 766 | /* Object pascal: it hangs off of `this'. Must |
| 767 | not inadvertently convert from a method call |
| 768 | to data ref. */ |
| 769 | if (innermost_block == 0 |
| 770 | || contained_in (block_found, |
| 771 | innermost_block)) |
| 772 | innermost_block = block_found; |
| 773 | write_exp_elt_opcode (OP_THIS); |
| 774 | write_exp_elt_opcode (OP_THIS); |
| 775 | write_exp_elt_opcode (STRUCTOP_PTR); |
| 776 | write_exp_string ($1.stoken); |
| 777 | write_exp_elt_opcode (STRUCTOP_PTR); |
| 778 | /* We need type of this. */ |
| 779 | this_val = value_of_this_silent (parse_language); |
| 780 | if (this_val) |
| 781 | this_type = value_type (this_val); |
| 782 | else |
| 783 | this_type = NULL; |
| 784 | if (this_type) |
| 785 | current_type = lookup_struct_elt_type ( |
| 786 | this_type, |
| 787 | copy_name ($1.stoken), 0); |
| 788 | else |
| 789 | current_type = NULL; |
| 790 | } |
| 791 | else |
| 792 | { |
| 793 | struct bound_minimal_symbol msymbol; |
| 794 | char *arg = copy_name ($1.stoken); |
| 795 | |
| 796 | msymbol = |
| 797 | lookup_bound_minimal_symbol (arg); |
| 798 | if (msymbol.minsym != NULL) |
| 799 | write_exp_msymbol (msymbol); |
| 800 | else if (!have_full_symbols () |
| 801 | && !have_partial_symbols ()) |
| 802 | error (_("No symbol table is loaded. " |
| 803 | "Use the \"file\" command.")); |
| 804 | else |
| 805 | error (_("No symbol \"%s\" in current context."), |
| 806 | copy_name ($1.stoken)); |
| 807 | } |
| 808 | } |
| 809 | ; |
| 810 | |
| 811 | |
| 812 | ptype : typebase |
| 813 | ; |
| 814 | |
| 815 | /* We used to try to recognize more pointer to member types here, but |
| 816 | that didn't work (shift/reduce conflicts meant that these rules never |
| 817 | got executed). The problem is that |
| 818 | int (foo::bar::baz::bizzle) |
| 819 | is a function type but |
| 820 | int (foo::bar::baz::bizzle::*) |
| 821 | is a pointer to member type. Stroustrup loses again! */ |
| 822 | |
| 823 | type : ptype |
| 824 | ; |
| 825 | |
| 826 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ |
| 827 | : '^' typebase |
| 828 | { $$ = lookup_pointer_type ($2); } |
| 829 | | TYPENAME |
| 830 | { $$ = $1.type; } |
| 831 | | STRUCT name |
| 832 | { $$ = lookup_struct (copy_name ($2), |
| 833 | expression_context_block); } |
| 834 | | CLASS name |
| 835 | { $$ = lookup_struct (copy_name ($2), |
| 836 | expression_context_block); } |
| 837 | /* "const" and "volatile" are curently ignored. A type qualifier |
| 838 | after the type is handled in the ptype rule. I think these could |
| 839 | be too. */ |
| 840 | ; |
| 841 | |
| 842 | name : NAME { $$ = $1.stoken; } |
| 843 | | BLOCKNAME { $$ = $1.stoken; } |
| 844 | | TYPENAME { $$ = $1.stoken; } |
| 845 | | NAME_OR_INT { $$ = $1.stoken; } |
| 846 | ; |
| 847 | |
| 848 | name_not_typename : NAME |
| 849 | | BLOCKNAME |
| 850 | /* These would be useful if name_not_typename was useful, but it is just |
| 851 | a fake for "variable", so these cause reduce/reduce conflicts because |
| 852 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, |
| 853 | =exp) or just an exp. If name_not_typename was ever used in an lvalue |
| 854 | context where only a name could occur, this might be useful. |
| 855 | | NAME_OR_INT |
| 856 | */ |
| 857 | ; |
| 858 | |
| 859 | %% |
| 860 | |
| 861 | /* Take care of parsing a number (anything that starts with a digit). |
| 862 | Set yylval and return the token type; update lexptr. |
| 863 | LEN is the number of characters in it. */ |
| 864 | |
| 865 | /*** Needs some error checking for the float case ***/ |
| 866 | |
| 867 | static int |
| 868 | parse_number (const char *p, int len, int parsed_float, YYSTYPE *putithere) |
| 869 | { |
| 870 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values |
| 871 | here, and we do kind of silly things like cast to unsigned. */ |
| 872 | LONGEST n = 0; |
| 873 | LONGEST prevn = 0; |
| 874 | ULONGEST un; |
| 875 | |
| 876 | int i = 0; |
| 877 | int c; |
| 878 | int base = input_radix; |
| 879 | int unsigned_p = 0; |
| 880 | |
| 881 | /* Number of "L" suffixes encountered. */ |
| 882 | int long_p = 0; |
| 883 | |
| 884 | /* We have found a "L" or "U" suffix. */ |
| 885 | int found_suffix = 0; |
| 886 | |
| 887 | ULONGEST high_bit; |
| 888 | struct type *signed_type; |
| 889 | struct type *unsigned_type; |
| 890 | |
| 891 | if (parsed_float) |
| 892 | { |
| 893 | if (! parse_c_float (parse_gdbarch, p, len, |
| 894 | &putithere->typed_val_float.dval, |
| 895 | &putithere->typed_val_float.type)) |
| 896 | return ERROR; |
| 897 | return FLOAT; |
| 898 | } |
| 899 | |
| 900 | /* Handle base-switching prefixes 0x, 0t, 0d, 0. */ |
| 901 | if (p[0] == '0') |
| 902 | switch (p[1]) |
| 903 | { |
| 904 | case 'x': |
| 905 | case 'X': |
| 906 | if (len >= 3) |
| 907 | { |
| 908 | p += 2; |
| 909 | base = 16; |
| 910 | len -= 2; |
| 911 | } |
| 912 | break; |
| 913 | |
| 914 | case 't': |
| 915 | case 'T': |
| 916 | case 'd': |
| 917 | case 'D': |
| 918 | if (len >= 3) |
| 919 | { |
| 920 | p += 2; |
| 921 | base = 10; |
| 922 | len -= 2; |
| 923 | } |
| 924 | break; |
| 925 | |
| 926 | default: |
| 927 | base = 8; |
| 928 | break; |
| 929 | } |
| 930 | |
| 931 | while (len-- > 0) |
| 932 | { |
| 933 | c = *p++; |
| 934 | if (c >= 'A' && c <= 'Z') |
| 935 | c += 'a' - 'A'; |
| 936 | if (c != 'l' && c != 'u') |
| 937 | n *= base; |
| 938 | if (c >= '0' && c <= '9') |
| 939 | { |
| 940 | if (found_suffix) |
| 941 | return ERROR; |
| 942 | n += i = c - '0'; |
| 943 | } |
| 944 | else |
| 945 | { |
| 946 | if (base > 10 && c >= 'a' && c <= 'f') |
| 947 | { |
| 948 | if (found_suffix) |
| 949 | return ERROR; |
| 950 | n += i = c - 'a' + 10; |
| 951 | } |
| 952 | else if (c == 'l') |
| 953 | { |
| 954 | ++long_p; |
| 955 | found_suffix = 1; |
| 956 | } |
| 957 | else if (c == 'u') |
| 958 | { |
| 959 | unsigned_p = 1; |
| 960 | found_suffix = 1; |
| 961 | } |
| 962 | else |
| 963 | return ERROR; /* Char not a digit */ |
| 964 | } |
| 965 | if (i >= base) |
| 966 | return ERROR; /* Invalid digit in this base. */ |
| 967 | |
| 968 | /* Portably test for overflow (only works for nonzero values, so make |
| 969 | a second check for zero). FIXME: Can't we just make n and prevn |
| 970 | unsigned and avoid this? */ |
| 971 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) |
| 972 | unsigned_p = 1; /* Try something unsigned. */ |
| 973 | |
| 974 | /* Portably test for unsigned overflow. |
| 975 | FIXME: This check is wrong; for example it doesn't find overflow |
| 976 | on 0x123456789 when LONGEST is 32 bits. */ |
| 977 | if (c != 'l' && c != 'u' && n != 0) |
| 978 | { |
| 979 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) |
| 980 | error (_("Numeric constant too large.")); |
| 981 | } |
| 982 | prevn = n; |
| 983 | } |
| 984 | |
| 985 | /* An integer constant is an int, a long, or a long long. An L |
| 986 | suffix forces it to be long; an LL suffix forces it to be long |
| 987 | long. If not forced to a larger size, it gets the first type of |
| 988 | the above that it fits in. To figure out whether it fits, we |
| 989 | shift it right and see whether anything remains. Note that we |
| 990 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one |
| 991 | operation, because many compilers will warn about such a shift |
| 992 | (which always produces a zero result). Sometimes gdbarch_int_bit |
| 993 | or gdbarch_long_bit will be that big, sometimes not. To deal with |
| 994 | the case where it is we just always shift the value more than |
| 995 | once, with fewer bits each time. */ |
| 996 | |
| 997 | un = (ULONGEST)n >> 2; |
| 998 | if (long_p == 0 |
| 999 | && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0) |
| 1000 | { |
| 1001 | high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1); |
| 1002 | |
| 1003 | /* A large decimal (not hex or octal) constant (between INT_MAX |
| 1004 | and UINT_MAX) is a long or unsigned long, according to ANSI, |
| 1005 | never an unsigned int, but this code treats it as unsigned |
| 1006 | int. This probably should be fixed. GCC gives a warning on |
| 1007 | such constants. */ |
| 1008 | |
| 1009 | unsigned_type = parse_type->builtin_unsigned_int; |
| 1010 | signed_type = parse_type->builtin_int; |
| 1011 | } |
| 1012 | else if (long_p <= 1 |
| 1013 | && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0) |
| 1014 | { |
| 1015 | high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1); |
| 1016 | unsigned_type = parse_type->builtin_unsigned_long; |
| 1017 | signed_type = parse_type->builtin_long; |
| 1018 | } |
| 1019 | else |
| 1020 | { |
| 1021 | int shift; |
| 1022 | if (sizeof (ULONGEST) * HOST_CHAR_BIT |
| 1023 | < gdbarch_long_long_bit (parse_gdbarch)) |
| 1024 | /* A long long does not fit in a LONGEST. */ |
| 1025 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); |
| 1026 | else |
| 1027 | shift = (gdbarch_long_long_bit (parse_gdbarch) - 1); |
| 1028 | high_bit = (ULONGEST) 1 << shift; |
| 1029 | unsigned_type = parse_type->builtin_unsigned_long_long; |
| 1030 | signed_type = parse_type->builtin_long_long; |
| 1031 | } |
| 1032 | |
| 1033 | putithere->typed_val_int.val = n; |
| 1034 | |
| 1035 | /* If the high bit of the worked out type is set then this number |
| 1036 | has to be unsigned. */ |
| 1037 | |
| 1038 | if (unsigned_p || (n & high_bit)) |
| 1039 | { |
| 1040 | putithere->typed_val_int.type = unsigned_type; |
| 1041 | } |
| 1042 | else |
| 1043 | { |
| 1044 | putithere->typed_val_int.type = signed_type; |
| 1045 | } |
| 1046 | |
| 1047 | return INT; |
| 1048 | } |
| 1049 | |
| 1050 | |
| 1051 | struct type_push |
| 1052 | { |
| 1053 | struct type *stored; |
| 1054 | struct type_push *next; |
| 1055 | }; |
| 1056 | |
| 1057 | static struct type_push *tp_top = NULL; |
| 1058 | |
| 1059 | static void |
| 1060 | push_current_type (void) |
| 1061 | { |
| 1062 | struct type_push *tpnew; |
| 1063 | tpnew = (struct type_push *) malloc (sizeof (struct type_push)); |
| 1064 | tpnew->next = tp_top; |
| 1065 | tpnew->stored = current_type; |
| 1066 | current_type = NULL; |
| 1067 | tp_top = tpnew; |
| 1068 | } |
| 1069 | |
| 1070 | static void |
| 1071 | pop_current_type (void) |
| 1072 | { |
| 1073 | struct type_push *tp = tp_top; |
| 1074 | if (tp) |
| 1075 | { |
| 1076 | current_type = tp->stored; |
| 1077 | tp_top = tp->next; |
| 1078 | free (tp); |
| 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | struct token |
| 1083 | { |
| 1084 | char *operator; |
| 1085 | int token; |
| 1086 | enum exp_opcode opcode; |
| 1087 | }; |
| 1088 | |
| 1089 | static const struct token tokentab3[] = |
| 1090 | { |
| 1091 | {"shr", RSH, BINOP_END}, |
| 1092 | {"shl", LSH, BINOP_END}, |
| 1093 | {"and", ANDAND, BINOP_END}, |
| 1094 | {"div", DIV, BINOP_END}, |
| 1095 | {"not", NOT, BINOP_END}, |
| 1096 | {"mod", MOD, BINOP_END}, |
| 1097 | {"inc", INCREMENT, BINOP_END}, |
| 1098 | {"dec", DECREMENT, BINOP_END}, |
| 1099 | {"xor", XOR, BINOP_END} |
| 1100 | }; |
| 1101 | |
| 1102 | static const struct token tokentab2[] = |
| 1103 | { |
| 1104 | {"or", OR, BINOP_END}, |
| 1105 | {"<>", NOTEQUAL, BINOP_END}, |
| 1106 | {"<=", LEQ, BINOP_END}, |
| 1107 | {">=", GEQ, BINOP_END}, |
| 1108 | {":=", ASSIGN, BINOP_END}, |
| 1109 | {"::", COLONCOLON, BINOP_END} }; |
| 1110 | |
| 1111 | /* Allocate uppercased var: */ |
| 1112 | /* make an uppercased copy of tokstart. */ |
| 1113 | static char * |
| 1114 | uptok (const char *tokstart, int namelen) |
| 1115 | { |
| 1116 | int i; |
| 1117 | char *uptokstart = (char *)malloc(namelen+1); |
| 1118 | for (i = 0;i <= namelen;i++) |
| 1119 | { |
| 1120 | if ((tokstart[i]>='a' && tokstart[i]<='z')) |
| 1121 | uptokstart[i] = tokstart[i]-('a'-'A'); |
| 1122 | else |
| 1123 | uptokstart[i] = tokstart[i]; |
| 1124 | } |
| 1125 | uptokstart[namelen]='\0'; |
| 1126 | return uptokstart; |
| 1127 | } |
| 1128 | |
| 1129 | /* Read one token, getting characters through lexptr. */ |
| 1130 | |
| 1131 | static int |
| 1132 | yylex (void) |
| 1133 | { |
| 1134 | int c; |
| 1135 | int namelen; |
| 1136 | unsigned int i; |
| 1137 | const char *tokstart; |
| 1138 | char *uptokstart; |
| 1139 | const char *tokptr; |
| 1140 | int explen, tempbufindex; |
| 1141 | static char *tempbuf; |
| 1142 | static int tempbufsize; |
| 1143 | |
| 1144 | retry: |
| 1145 | |
| 1146 | prev_lexptr = lexptr; |
| 1147 | |
| 1148 | tokstart = lexptr; |
| 1149 | explen = strlen (lexptr); |
| 1150 | |
| 1151 | /* See if it is a special token of length 3. */ |
| 1152 | if (explen > 2) |
| 1153 | for (i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++) |
| 1154 | if (strncasecmp (tokstart, tokentab3[i].operator, 3) == 0 |
| 1155 | && (!isalpha (tokentab3[i].operator[0]) || explen == 3 |
| 1156 | || (!isalpha (tokstart[3]) |
| 1157 | && !isdigit (tokstart[3]) && tokstart[3] != '_'))) |
| 1158 | { |
| 1159 | lexptr += 3; |
| 1160 | yylval.opcode = tokentab3[i].opcode; |
| 1161 | return tokentab3[i].token; |
| 1162 | } |
| 1163 | |
| 1164 | /* See if it is a special token of length 2. */ |
| 1165 | if (explen > 1) |
| 1166 | for (i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++) |
| 1167 | if (strncasecmp (tokstart, tokentab2[i].operator, 2) == 0 |
| 1168 | && (!isalpha (tokentab2[i].operator[0]) || explen == 2 |
| 1169 | || (!isalpha (tokstart[2]) |
| 1170 | && !isdigit (tokstart[2]) && tokstart[2] != '_'))) |
| 1171 | { |
| 1172 | lexptr += 2; |
| 1173 | yylval.opcode = tokentab2[i].opcode; |
| 1174 | return tokentab2[i].token; |
| 1175 | } |
| 1176 | |
| 1177 | switch (c = *tokstart) |
| 1178 | { |
| 1179 | case 0: |
| 1180 | if (search_field && parse_completion) |
| 1181 | return COMPLETE; |
| 1182 | else |
| 1183 | return 0; |
| 1184 | |
| 1185 | case ' ': |
| 1186 | case '\t': |
| 1187 | case '\n': |
| 1188 | lexptr++; |
| 1189 | goto retry; |
| 1190 | |
| 1191 | case '\'': |
| 1192 | /* We either have a character constant ('0' or '\177' for example) |
| 1193 | or we have a quoted symbol reference ('foo(int,int)' in object pascal |
| 1194 | for example). */ |
| 1195 | lexptr++; |
| 1196 | c = *lexptr++; |
| 1197 | if (c == '\\') |
| 1198 | c = parse_escape (parse_gdbarch, &lexptr); |
| 1199 | else if (c == '\'') |
| 1200 | error (_("Empty character constant.")); |
| 1201 | |
| 1202 | yylval.typed_val_int.val = c; |
| 1203 | yylval.typed_val_int.type = parse_type->builtin_char; |
| 1204 | |
| 1205 | c = *lexptr++; |
| 1206 | if (c != '\'') |
| 1207 | { |
| 1208 | namelen = skip_quoted (tokstart) - tokstart; |
| 1209 | if (namelen > 2) |
| 1210 | { |
| 1211 | lexptr = tokstart + namelen; |
| 1212 | if (lexptr[-1] != '\'') |
| 1213 | error (_("Unmatched single quote.")); |
| 1214 | namelen -= 2; |
| 1215 | tokstart++; |
| 1216 | uptokstart = uptok(tokstart,namelen); |
| 1217 | goto tryname; |
| 1218 | } |
| 1219 | error (_("Invalid character constant.")); |
| 1220 | } |
| 1221 | return INT; |
| 1222 | |
| 1223 | case '(': |
| 1224 | paren_depth++; |
| 1225 | lexptr++; |
| 1226 | return c; |
| 1227 | |
| 1228 | case ')': |
| 1229 | if (paren_depth == 0) |
| 1230 | return 0; |
| 1231 | paren_depth--; |
| 1232 | lexptr++; |
| 1233 | return c; |
| 1234 | |
| 1235 | case ',': |
| 1236 | if (comma_terminates && paren_depth == 0) |
| 1237 | return 0; |
| 1238 | lexptr++; |
| 1239 | return c; |
| 1240 | |
| 1241 | case '.': |
| 1242 | /* Might be a floating point number. */ |
| 1243 | if (lexptr[1] < '0' || lexptr[1] > '9') |
| 1244 | { |
| 1245 | goto symbol; /* Nope, must be a symbol. */ |
| 1246 | } |
| 1247 | |
| 1248 | /* FALL THRU into number case. */ |
| 1249 | |
| 1250 | case '0': |
| 1251 | case '1': |
| 1252 | case '2': |
| 1253 | case '3': |
| 1254 | case '4': |
| 1255 | case '5': |
| 1256 | case '6': |
| 1257 | case '7': |
| 1258 | case '8': |
| 1259 | case '9': |
| 1260 | { |
| 1261 | /* It's a number. */ |
| 1262 | int got_dot = 0, got_e = 0, toktype; |
| 1263 | const char *p = tokstart; |
| 1264 | int hex = input_radix > 10; |
| 1265 | |
| 1266 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) |
| 1267 | { |
| 1268 | p += 2; |
| 1269 | hex = 1; |
| 1270 | } |
| 1271 | else if (c == '0' && (p[1]=='t' || p[1]=='T' |
| 1272 | || p[1]=='d' || p[1]=='D')) |
| 1273 | { |
| 1274 | p += 2; |
| 1275 | hex = 0; |
| 1276 | } |
| 1277 | |
| 1278 | for (;; ++p) |
| 1279 | { |
| 1280 | /* This test includes !hex because 'e' is a valid hex digit |
| 1281 | and thus does not indicate a floating point number when |
| 1282 | the radix is hex. */ |
| 1283 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) |
| 1284 | got_dot = got_e = 1; |
| 1285 | /* This test does not include !hex, because a '.' always indicates |
| 1286 | a decimal floating point number regardless of the radix. */ |
| 1287 | else if (!got_dot && *p == '.') |
| 1288 | got_dot = 1; |
| 1289 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') |
| 1290 | && (*p == '-' || *p == '+')) |
| 1291 | /* This is the sign of the exponent, not the end of the |
| 1292 | number. */ |
| 1293 | continue; |
| 1294 | /* We will take any letters or digits. parse_number will |
| 1295 | complain if past the radix, or if L or U are not final. */ |
| 1296 | else if ((*p < '0' || *p > '9') |
| 1297 | && ((*p < 'a' || *p > 'z') |
| 1298 | && (*p < 'A' || *p > 'Z'))) |
| 1299 | break; |
| 1300 | } |
| 1301 | toktype = parse_number (tokstart, |
| 1302 | p - tokstart, got_dot | got_e, &yylval); |
| 1303 | if (toktype == ERROR) |
| 1304 | { |
| 1305 | char *err_copy = (char *) alloca (p - tokstart + 1); |
| 1306 | |
| 1307 | memcpy (err_copy, tokstart, p - tokstart); |
| 1308 | err_copy[p - tokstart] = 0; |
| 1309 | error (_("Invalid number \"%s\"."), err_copy); |
| 1310 | } |
| 1311 | lexptr = p; |
| 1312 | return toktype; |
| 1313 | } |
| 1314 | |
| 1315 | case '+': |
| 1316 | case '-': |
| 1317 | case '*': |
| 1318 | case '/': |
| 1319 | case '|': |
| 1320 | case '&': |
| 1321 | case '^': |
| 1322 | case '~': |
| 1323 | case '!': |
| 1324 | case '@': |
| 1325 | case '<': |
| 1326 | case '>': |
| 1327 | case '[': |
| 1328 | case ']': |
| 1329 | case '?': |
| 1330 | case ':': |
| 1331 | case '=': |
| 1332 | case '{': |
| 1333 | case '}': |
| 1334 | symbol: |
| 1335 | lexptr++; |
| 1336 | return c; |
| 1337 | |
| 1338 | case '"': |
| 1339 | |
| 1340 | /* Build the gdb internal form of the input string in tempbuf, |
| 1341 | translating any standard C escape forms seen. Note that the |
| 1342 | buffer is null byte terminated *only* for the convenience of |
| 1343 | debugging gdb itself and printing the buffer contents when |
| 1344 | the buffer contains no embedded nulls. Gdb does not depend |
| 1345 | upon the buffer being null byte terminated, it uses the length |
| 1346 | string instead. This allows gdb to handle C strings (as well |
| 1347 | as strings in other languages) with embedded null bytes. */ |
| 1348 | |
| 1349 | tokptr = ++tokstart; |
| 1350 | tempbufindex = 0; |
| 1351 | |
| 1352 | do { |
| 1353 | /* Grow the static temp buffer if necessary, including allocating |
| 1354 | the first one on demand. */ |
| 1355 | if (tempbufindex + 1 >= tempbufsize) |
| 1356 | { |
| 1357 | tempbuf = (char *) realloc (tempbuf, tempbufsize += 64); |
| 1358 | } |
| 1359 | |
| 1360 | switch (*tokptr) |
| 1361 | { |
| 1362 | case '\0': |
| 1363 | case '"': |
| 1364 | /* Do nothing, loop will terminate. */ |
| 1365 | break; |
| 1366 | case '\\': |
| 1367 | ++tokptr; |
| 1368 | c = parse_escape (parse_gdbarch, &tokptr); |
| 1369 | if (c == -1) |
| 1370 | { |
| 1371 | continue; |
| 1372 | } |
| 1373 | tempbuf[tempbufindex++] = c; |
| 1374 | break; |
| 1375 | default: |
| 1376 | tempbuf[tempbufindex++] = *tokptr++; |
| 1377 | break; |
| 1378 | } |
| 1379 | } while ((*tokptr != '"') && (*tokptr != '\0')); |
| 1380 | if (*tokptr++ != '"') |
| 1381 | { |
| 1382 | error (_("Unterminated string in expression.")); |
| 1383 | } |
| 1384 | tempbuf[tempbufindex] = '\0'; /* See note above. */ |
| 1385 | yylval.sval.ptr = tempbuf; |
| 1386 | yylval.sval.length = tempbufindex; |
| 1387 | lexptr = tokptr; |
| 1388 | return (STRING); |
| 1389 | } |
| 1390 | |
| 1391 | if (!(c == '_' || c == '$' |
| 1392 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) |
| 1393 | /* We must have come across a bad character (e.g. ';'). */ |
| 1394 | error (_("Invalid character '%c' in expression."), c); |
| 1395 | |
| 1396 | /* It's a name. See how long it is. */ |
| 1397 | namelen = 0; |
| 1398 | for (c = tokstart[namelen]; |
| 1399 | (c == '_' || c == '$' || (c >= '0' && c <= '9') |
| 1400 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) |
| 1401 | { |
| 1402 | /* Template parameter lists are part of the name. |
| 1403 | FIXME: This mishandles `print $a<4&&$a>3'. */ |
| 1404 | if (c == '<') |
| 1405 | { |
| 1406 | int i = namelen; |
| 1407 | int nesting_level = 1; |
| 1408 | while (tokstart[++i]) |
| 1409 | { |
| 1410 | if (tokstart[i] == '<') |
| 1411 | nesting_level++; |
| 1412 | else if (tokstart[i] == '>') |
| 1413 | { |
| 1414 | if (--nesting_level == 0) |
| 1415 | break; |
| 1416 | } |
| 1417 | } |
| 1418 | if (tokstart[i] == '>') |
| 1419 | namelen = i; |
| 1420 | else |
| 1421 | break; |
| 1422 | } |
| 1423 | |
| 1424 | /* do NOT uppercase internals because of registers !!! */ |
| 1425 | c = tokstart[++namelen]; |
| 1426 | } |
| 1427 | |
| 1428 | uptokstart = uptok(tokstart,namelen); |
| 1429 | |
| 1430 | /* The token "if" terminates the expression and is NOT |
| 1431 | removed from the input stream. */ |
| 1432 | if (namelen == 2 && uptokstart[0] == 'I' && uptokstart[1] == 'F') |
| 1433 | { |
| 1434 | free (uptokstart); |
| 1435 | return 0; |
| 1436 | } |
| 1437 | |
| 1438 | lexptr += namelen; |
| 1439 | |
| 1440 | tryname: |
| 1441 | |
| 1442 | /* Catch specific keywords. Should be done with a data structure. */ |
| 1443 | switch (namelen) |
| 1444 | { |
| 1445 | case 6: |
| 1446 | if (strcmp (uptokstart, "OBJECT") == 0) |
| 1447 | { |
| 1448 | free (uptokstart); |
| 1449 | return CLASS; |
| 1450 | } |
| 1451 | if (strcmp (uptokstart, "RECORD") == 0) |
| 1452 | { |
| 1453 | free (uptokstart); |
| 1454 | return STRUCT; |
| 1455 | } |
| 1456 | if (strcmp (uptokstart, "SIZEOF") == 0) |
| 1457 | { |
| 1458 | free (uptokstart); |
| 1459 | return SIZEOF; |
| 1460 | } |
| 1461 | break; |
| 1462 | case 5: |
| 1463 | if (strcmp (uptokstart, "CLASS") == 0) |
| 1464 | { |
| 1465 | free (uptokstart); |
| 1466 | return CLASS; |
| 1467 | } |
| 1468 | if (strcmp (uptokstart, "FALSE") == 0) |
| 1469 | { |
| 1470 | yylval.lval = 0; |
| 1471 | free (uptokstart); |
| 1472 | return FALSEKEYWORD; |
| 1473 | } |
| 1474 | break; |
| 1475 | case 4: |
| 1476 | if (strcmp (uptokstart, "TRUE") == 0) |
| 1477 | { |
| 1478 | yylval.lval = 1; |
| 1479 | free (uptokstart); |
| 1480 | return TRUEKEYWORD; |
| 1481 | } |
| 1482 | if (strcmp (uptokstart, "SELF") == 0) |
| 1483 | { |
| 1484 | /* Here we search for 'this' like |
| 1485 | inserted in FPC stabs debug info. */ |
| 1486 | static const char this_name[] = "this"; |
| 1487 | |
| 1488 | if (lookup_symbol (this_name, expression_context_block, |
| 1489 | VAR_DOMAIN, NULL)) |
| 1490 | { |
| 1491 | free (uptokstart); |
| 1492 | return THIS; |
| 1493 | } |
| 1494 | } |
| 1495 | break; |
| 1496 | default: |
| 1497 | break; |
| 1498 | } |
| 1499 | |
| 1500 | yylval.sval.ptr = tokstart; |
| 1501 | yylval.sval.length = namelen; |
| 1502 | |
| 1503 | if (*tokstart == '$') |
| 1504 | { |
| 1505 | char *tmp; |
| 1506 | |
| 1507 | /* $ is the normal prefix for pascal hexadecimal values |
| 1508 | but this conflicts with the GDB use for debugger variables |
| 1509 | so in expression to enter hexadecimal values |
| 1510 | we still need to use C syntax with 0xff */ |
| 1511 | write_dollar_variable (yylval.sval); |
| 1512 | tmp = alloca (namelen + 1); |
| 1513 | memcpy (tmp, tokstart, namelen); |
| 1514 | tmp[namelen] = '\0'; |
| 1515 | intvar = lookup_only_internalvar (tmp + 1); |
| 1516 | free (uptokstart); |
| 1517 | return VARIABLE; |
| 1518 | } |
| 1519 | |
| 1520 | /* Use token-type BLOCKNAME for symbols that happen to be defined as |
| 1521 | functions or symtabs. If this is not so, then ... |
| 1522 | Use token-type TYPENAME for symbols that happen to be defined |
| 1523 | currently as names of types; NAME for other symbols. |
| 1524 | The caller is not constrained to care about the distinction. */ |
| 1525 | { |
| 1526 | char *tmp = copy_name (yylval.sval); |
| 1527 | struct symbol *sym; |
| 1528 | struct field_of_this_result is_a_field_of_this; |
| 1529 | int is_a_field = 0; |
| 1530 | int hextype; |
| 1531 | |
| 1532 | |
| 1533 | if (search_field && current_type) |
| 1534 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
| 1535 | if (is_a_field) |
| 1536 | sym = NULL; |
| 1537 | else |
| 1538 | sym = lookup_symbol (tmp, expression_context_block, |
| 1539 | VAR_DOMAIN, &is_a_field_of_this); |
| 1540 | /* second chance uppercased (as Free Pascal does). */ |
| 1541 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
| 1542 | { |
| 1543 | for (i = 0; i <= namelen; i++) |
| 1544 | { |
| 1545 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) |
| 1546 | tmp[i] -= ('a'-'A'); |
| 1547 | } |
| 1548 | if (search_field && current_type) |
| 1549 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
| 1550 | if (is_a_field) |
| 1551 | sym = NULL; |
| 1552 | else |
| 1553 | sym = lookup_symbol (tmp, expression_context_block, |
| 1554 | VAR_DOMAIN, &is_a_field_of_this); |
| 1555 | } |
| 1556 | /* Third chance Capitalized (as GPC does). */ |
| 1557 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
| 1558 | { |
| 1559 | for (i = 0; i <= namelen; i++) |
| 1560 | { |
| 1561 | if (i == 0) |
| 1562 | { |
| 1563 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) |
| 1564 | tmp[i] -= ('a'-'A'); |
| 1565 | } |
| 1566 | else |
| 1567 | if ((tmp[i] >= 'A' && tmp[i] <= 'Z')) |
| 1568 | tmp[i] -= ('A'-'a'); |
| 1569 | } |
| 1570 | if (search_field && current_type) |
| 1571 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
| 1572 | if (is_a_field) |
| 1573 | sym = NULL; |
| 1574 | else |
| 1575 | sym = lookup_symbol (tmp, expression_context_block, |
| 1576 | VAR_DOMAIN, &is_a_field_of_this); |
| 1577 | } |
| 1578 | |
| 1579 | if (is_a_field) |
| 1580 | { |
| 1581 | tempbuf = (char *) realloc (tempbuf, namelen + 1); |
| 1582 | strncpy (tempbuf, tmp, namelen); |
| 1583 | tempbuf [namelen] = 0; |
| 1584 | yylval.sval.ptr = tempbuf; |
| 1585 | yylval.sval.length = namelen; |
| 1586 | free (uptokstart); |
| 1587 | return FIELDNAME; |
| 1588 | } |
| 1589 | /* Call lookup_symtab, not lookup_partial_symtab, in case there are |
| 1590 | no psymtabs (coff, xcoff, or some future change to blow away the |
| 1591 | psymtabs once once symbols are read). */ |
| 1592 | if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 1593 | || lookup_symtab (tmp)) |
| 1594 | { |
| 1595 | yylval.ssym.sym = sym; |
| 1596 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
| 1597 | free (uptokstart); |
| 1598 | return BLOCKNAME; |
| 1599 | } |
| 1600 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
| 1601 | { |
| 1602 | #if 1 |
| 1603 | /* Despite the following flaw, we need to keep this code enabled. |
| 1604 | Because we can get called from check_stub_method, if we don't |
| 1605 | handle nested types then it screws many operations in any |
| 1606 | program which uses nested types. */ |
| 1607 | /* In "A::x", if x is a member function of A and there happens |
| 1608 | to be a type (nested or not, since the stabs don't make that |
| 1609 | distinction) named x, then this code incorrectly thinks we |
| 1610 | are dealing with nested types rather than a member function. */ |
| 1611 | |
| 1612 | const char *p; |
| 1613 | const char *namestart; |
| 1614 | struct symbol *best_sym; |
| 1615 | |
| 1616 | /* Look ahead to detect nested types. This probably should be |
| 1617 | done in the grammar, but trying seemed to introduce a lot |
| 1618 | of shift/reduce and reduce/reduce conflicts. It's possible |
| 1619 | that it could be done, though. Or perhaps a non-grammar, but |
| 1620 | less ad hoc, approach would work well. */ |
| 1621 | |
| 1622 | /* Since we do not currently have any way of distinguishing |
| 1623 | a nested type from a non-nested one (the stabs don't tell |
| 1624 | us whether a type is nested), we just ignore the |
| 1625 | containing type. */ |
| 1626 | |
| 1627 | p = lexptr; |
| 1628 | best_sym = sym; |
| 1629 | while (1) |
| 1630 | { |
| 1631 | /* Skip whitespace. */ |
| 1632 | while (*p == ' ' || *p == '\t' || *p == '\n') |
| 1633 | ++p; |
| 1634 | if (*p == ':' && p[1] == ':') |
| 1635 | { |
| 1636 | /* Skip the `::'. */ |
| 1637 | p += 2; |
| 1638 | /* Skip whitespace. */ |
| 1639 | while (*p == ' ' || *p == '\t' || *p == '\n') |
| 1640 | ++p; |
| 1641 | namestart = p; |
| 1642 | while (*p == '_' || *p == '$' || (*p >= '0' && *p <= '9') |
| 1643 | || (*p >= 'a' && *p <= 'z') |
| 1644 | || (*p >= 'A' && *p <= 'Z')) |
| 1645 | ++p; |
| 1646 | if (p != namestart) |
| 1647 | { |
| 1648 | struct symbol *cur_sym; |
| 1649 | /* As big as the whole rest of the expression, which is |
| 1650 | at least big enough. */ |
| 1651 | char *ncopy = alloca (strlen (tmp)+strlen (namestart)+3); |
| 1652 | char *tmp1; |
| 1653 | |
| 1654 | tmp1 = ncopy; |
| 1655 | memcpy (tmp1, tmp, strlen (tmp)); |
| 1656 | tmp1 += strlen (tmp); |
| 1657 | memcpy (tmp1, "::", 2); |
| 1658 | tmp1 += 2; |
| 1659 | memcpy (tmp1, namestart, p - namestart); |
| 1660 | tmp1[p - namestart] = '\0'; |
| 1661 | cur_sym = lookup_symbol (ncopy, expression_context_block, |
| 1662 | VAR_DOMAIN, NULL); |
| 1663 | if (cur_sym) |
| 1664 | { |
| 1665 | if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF) |
| 1666 | { |
| 1667 | best_sym = cur_sym; |
| 1668 | lexptr = p; |
| 1669 | } |
| 1670 | else |
| 1671 | break; |
| 1672 | } |
| 1673 | else |
| 1674 | break; |
| 1675 | } |
| 1676 | else |
| 1677 | break; |
| 1678 | } |
| 1679 | else |
| 1680 | break; |
| 1681 | } |
| 1682 | |
| 1683 | yylval.tsym.type = SYMBOL_TYPE (best_sym); |
| 1684 | #else /* not 0 */ |
| 1685 | yylval.tsym.type = SYMBOL_TYPE (sym); |
| 1686 | #endif /* not 0 */ |
| 1687 | free (uptokstart); |
| 1688 | return TYPENAME; |
| 1689 | } |
| 1690 | yylval.tsym.type |
| 1691 | = language_lookup_primitive_type_by_name (parse_language, |
| 1692 | parse_gdbarch, tmp); |
| 1693 | if (yylval.tsym.type != NULL) |
| 1694 | { |
| 1695 | free (uptokstart); |
| 1696 | return TYPENAME; |
| 1697 | } |
| 1698 | |
| 1699 | /* Input names that aren't symbols but ARE valid hex numbers, |
| 1700 | when the input radix permits them, can be names or numbers |
| 1701 | depending on the parse. Note we support radixes > 16 here. */ |
| 1702 | if (!sym |
| 1703 | && ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) |
| 1704 | || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10))) |
| 1705 | { |
| 1706 | YYSTYPE newlval; /* Its value is ignored. */ |
| 1707 | hextype = parse_number (tokstart, namelen, 0, &newlval); |
| 1708 | if (hextype == INT) |
| 1709 | { |
| 1710 | yylval.ssym.sym = sym; |
| 1711 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
| 1712 | free (uptokstart); |
| 1713 | return NAME_OR_INT; |
| 1714 | } |
| 1715 | } |
| 1716 | |
| 1717 | free(uptokstart); |
| 1718 | /* Any other kind of symbol. */ |
| 1719 | yylval.ssym.sym = sym; |
| 1720 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
| 1721 | return NAME; |
| 1722 | } |
| 1723 | } |
| 1724 | |
| 1725 | void |
| 1726 | yyerror (char *msg) |
| 1727 | { |
| 1728 | if (prev_lexptr) |
| 1729 | lexptr = prev_lexptr; |
| 1730 | |
| 1731 | error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr); |
| 1732 | } |