Commit | Line | Data |
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c906108c | 1 | /* YACC parser for C expressions, for GDB. |
b6ba6518 | 2 | Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
63d06c5c | 3 | 1998, 1999, 2000, 2003, 2004 |
c906108c SS |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* Parse a C expression from text in a string, | |
23 | and return the result as a struct expression pointer. | |
24 | That structure contains arithmetic operations in reverse polish, | |
25 | with constants represented by operations that are followed by special data. | |
26 | See expression.h for the details of the format. | |
27 | What is important here is that it can be built up sequentially | |
28 | during the process of parsing; the lower levels of the tree always | |
29 | come first in the result. | |
30 | ||
31 | Note that malloc's and realloc's in this file are transformed to | |
32 | xmalloc and xrealloc respectively by the same sed command in the | |
33 | makefile that remaps any other malloc/realloc inserted by the parser | |
34 | generator. Doing this with #defines and trying to control the interaction | |
35 | with include files (<malloc.h> and <stdlib.h> for example) just became | |
36 | too messy, particularly when such includes can be inserted at random | |
37 | times by the parser generator. */ | |
38 | ||
39 | %{ | |
40 | ||
41 | #include "defs.h" | |
42 | #include "gdb_string.h" | |
43 | #include <ctype.h> | |
44 | #include "expression.h" | |
45 | #include "value.h" | |
46 | #include "parser-defs.h" | |
47 | #include "language.h" | |
48 | #include "c-lang.h" | |
49 | #include "bfd.h" /* Required by objfiles.h. */ | |
50 | #include "symfile.h" /* Required by objfiles.h. */ | |
51 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */ | |
234b45d4 | 52 | #include "charset.h" |
fe898f56 | 53 | #include "block.h" |
79c2c32d | 54 | #include "cp-support.h" |
c906108c SS |
55 | |
56 | /* Flag indicating we're dealing with HP-compiled objects */ | |
57 | extern int hp_som_som_object_present; | |
58 | ||
59 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), | |
60 | as well as gratuitiously global symbol names, so we can have multiple | |
61 | yacc generated parsers in gdb. Note that these are only the variables | |
62 | produced by yacc. If other parser generators (bison, byacc, etc) produce | |
63 | additional global names that conflict at link time, then those parser | |
64 | generators need to be fixed instead of adding those names to this list. */ | |
65 | ||
66 | #define yymaxdepth c_maxdepth | |
67 | #define yyparse c_parse | |
68 | #define yylex c_lex | |
69 | #define yyerror c_error | |
70 | #define yylval c_lval | |
71 | #define yychar c_char | |
72 | #define yydebug c_debug | |
73 | #define yypact c_pact | |
74 | #define yyr1 c_r1 | |
75 | #define yyr2 c_r2 | |
76 | #define yydef c_def | |
77 | #define yychk c_chk | |
78 | #define yypgo c_pgo | |
79 | #define yyact c_act | |
80 | #define yyexca c_exca | |
81 | #define yyerrflag c_errflag | |
82 | #define yynerrs c_nerrs | |
83 | #define yyps c_ps | |
84 | #define yypv c_pv | |
85 | #define yys c_s | |
86 | #define yy_yys c_yys | |
87 | #define yystate c_state | |
88 | #define yytmp c_tmp | |
89 | #define yyv c_v | |
90 | #define yy_yyv c_yyv | |
91 | #define yyval c_val | |
92 | #define yylloc c_lloc | |
93 | #define yyreds c_reds /* With YYDEBUG defined */ | |
94 | #define yytoks c_toks /* With YYDEBUG defined */ | |
06891d83 JT |
95 | #define yyname c_name /* With YYDEBUG defined */ |
96 | #define yyrule c_rule /* With YYDEBUG defined */ | |
c906108c SS |
97 | #define yylhs c_yylhs |
98 | #define yylen c_yylen | |
99 | #define yydefred c_yydefred | |
100 | #define yydgoto c_yydgoto | |
101 | #define yysindex c_yysindex | |
102 | #define yyrindex c_yyrindex | |
103 | #define yygindex c_yygindex | |
104 | #define yytable c_yytable | |
105 | #define yycheck c_yycheck | |
106 | ||
107 | #ifndef YYDEBUG | |
f461f5cf | 108 | #define YYDEBUG 1 /* Default to yydebug support */ |
c906108c SS |
109 | #endif |
110 | ||
f461f5cf PM |
111 | #define YYFPRINTF parser_fprintf |
112 | ||
a14ed312 | 113 | int yyparse (void); |
c906108c | 114 | |
a14ed312 | 115 | static int yylex (void); |
c906108c | 116 | |
a14ed312 | 117 | void yyerror (char *); |
c906108c SS |
118 | |
119 | %} | |
120 | ||
121 | /* Although the yacc "value" of an expression is not used, | |
122 | since the result is stored in the structure being created, | |
123 | other node types do have values. */ | |
124 | ||
125 | %union | |
126 | { | |
127 | LONGEST lval; | |
128 | struct { | |
129 | LONGEST val; | |
130 | struct type *type; | |
131 | } typed_val_int; | |
132 | struct { | |
133 | DOUBLEST dval; | |
134 | struct type *type; | |
135 | } typed_val_float; | |
136 | struct symbol *sym; | |
137 | struct type *tval; | |
138 | struct stoken sval; | |
139 | struct ttype tsym; | |
140 | struct symtoken ssym; | |
141 | int voidval; | |
142 | struct block *bval; | |
143 | enum exp_opcode opcode; | |
144 | struct internalvar *ivar; | |
145 | ||
146 | struct type **tvec; | |
147 | int *ivec; | |
148 | } | |
149 | ||
150 | %{ | |
151 | /* YYSTYPE gets defined by %union */ | |
a14ed312 | 152 | static int parse_number (char *, int, int, YYSTYPE *); |
c906108c SS |
153 | %} |
154 | ||
155 | %type <voidval> exp exp1 type_exp start variable qualified_name lcurly | |
156 | %type <lval> rcurly | |
79c2c32d | 157 | %type <tval> type typebase qualified_type |
c906108c SS |
158 | %type <tvec> nonempty_typelist |
159 | /* %type <bval> block */ | |
160 | ||
161 | /* Fancy type parsing. */ | |
162 | %type <voidval> func_mod direct_abs_decl abs_decl | |
163 | %type <tval> ptype | |
164 | %type <lval> array_mod | |
165 | ||
166 | %token <typed_val_int> INT | |
167 | %token <typed_val_float> FLOAT | |
168 | ||
169 | /* Both NAME and TYPENAME tokens represent symbols in the input, | |
170 | and both convey their data as strings. | |
171 | But a TYPENAME is a string that happens to be defined as a typedef | |
172 | or builtin type name (such as int or char) | |
173 | and a NAME is any other symbol. | |
174 | Contexts where this distinction is not important can use the | |
175 | nonterminal "name", which matches either NAME or TYPENAME. */ | |
176 | ||
177 | %token <sval> STRING | |
178 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ | |
179 | %token <tsym> TYPENAME | |
180 | %type <sval> name | |
181 | %type <ssym> name_not_typename | |
182 | %type <tsym> typename | |
183 | ||
184 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
185 | but which would parse as a valid number in the current input radix. | |
186 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
187 | turned into a name or into a number. */ | |
188 | ||
189 | %token <ssym> NAME_OR_INT | |
190 | ||
191 | %token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON | |
192 | %token TEMPLATE | |
193 | %token ERROR | |
194 | ||
195 | /* Special type cases, put in to allow the parser to distinguish different | |
196 | legal basetypes. */ | |
197 | %token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD DOUBLE_KEYWORD | |
198 | ||
199 | %token <voidval> VARIABLE | |
200 | ||
201 | %token <opcode> ASSIGN_MODIFY | |
202 | ||
203 | /* C++ */ | |
c906108c SS |
204 | %token TRUEKEYWORD |
205 | %token FALSEKEYWORD | |
206 | ||
207 | ||
208 | %left ',' | |
209 | %left ABOVE_COMMA | |
210 | %right '=' ASSIGN_MODIFY | |
211 | %right '?' | |
212 | %left OROR | |
213 | %left ANDAND | |
214 | %left '|' | |
215 | %left '^' | |
216 | %left '&' | |
217 | %left EQUAL NOTEQUAL | |
218 | %left '<' '>' LEQ GEQ | |
219 | %left LSH RSH | |
220 | %left '@' | |
221 | %left '+' '-' | |
222 | %left '*' '/' '%' | |
223 | %right UNARY INCREMENT DECREMENT | |
224 | %right ARROW '.' '[' '(' | |
225 | %token <ssym> BLOCKNAME | |
226 | %token <bval> FILENAME | |
227 | %type <bval> block | |
228 | %left COLONCOLON | |
229 | ||
230 | \f | |
231 | %% | |
232 | ||
233 | start : exp1 | |
234 | | type_exp | |
235 | ; | |
236 | ||
237 | type_exp: type | |
238 | { write_exp_elt_opcode(OP_TYPE); | |
239 | write_exp_elt_type($1); | |
240 | write_exp_elt_opcode(OP_TYPE);} | |
241 | ; | |
242 | ||
243 | /* Expressions, including the comma operator. */ | |
244 | exp1 : exp | |
245 | | exp1 ',' exp | |
246 | { write_exp_elt_opcode (BINOP_COMMA); } | |
247 | ; | |
248 | ||
249 | /* Expressions, not including the comma operator. */ | |
250 | exp : '*' exp %prec UNARY | |
251 | { write_exp_elt_opcode (UNOP_IND); } | |
ef944135 | 252 | ; |
c906108c SS |
253 | |
254 | exp : '&' exp %prec UNARY | |
255 | { write_exp_elt_opcode (UNOP_ADDR); } | |
ef944135 | 256 | ; |
c906108c SS |
257 | |
258 | exp : '-' exp %prec UNARY | |
259 | { write_exp_elt_opcode (UNOP_NEG); } | |
260 | ; | |
261 | ||
262 | exp : '!' exp %prec UNARY | |
263 | { write_exp_elt_opcode (UNOP_LOGICAL_NOT); } | |
264 | ; | |
265 | ||
266 | exp : '~' exp %prec UNARY | |
267 | { write_exp_elt_opcode (UNOP_COMPLEMENT); } | |
268 | ; | |
269 | ||
270 | exp : INCREMENT exp %prec UNARY | |
271 | { write_exp_elt_opcode (UNOP_PREINCREMENT); } | |
272 | ; | |
273 | ||
274 | exp : DECREMENT exp %prec UNARY | |
275 | { write_exp_elt_opcode (UNOP_PREDECREMENT); } | |
276 | ; | |
277 | ||
278 | exp : exp INCREMENT %prec UNARY | |
279 | { write_exp_elt_opcode (UNOP_POSTINCREMENT); } | |
280 | ; | |
281 | ||
282 | exp : exp DECREMENT %prec UNARY | |
283 | { write_exp_elt_opcode (UNOP_POSTDECREMENT); } | |
284 | ; | |
285 | ||
286 | exp : SIZEOF exp %prec UNARY | |
287 | { write_exp_elt_opcode (UNOP_SIZEOF); } | |
288 | ; | |
289 | ||
290 | exp : exp ARROW name | |
291 | { write_exp_elt_opcode (STRUCTOP_PTR); | |
292 | write_exp_string ($3); | |
293 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
294 | ; | |
295 | ||
296 | exp : exp ARROW qualified_name | |
297 | { /* exp->type::name becomes exp->*(&type::name) */ | |
298 | /* Note: this doesn't work if name is a | |
299 | static member! FIXME */ | |
300 | write_exp_elt_opcode (UNOP_ADDR); | |
301 | write_exp_elt_opcode (STRUCTOP_MPTR); } | |
302 | ; | |
303 | ||
304 | exp : exp ARROW '*' exp | |
305 | { write_exp_elt_opcode (STRUCTOP_MPTR); } | |
306 | ; | |
307 | ||
308 | exp : exp '.' name | |
309 | { write_exp_elt_opcode (STRUCTOP_STRUCT); | |
310 | write_exp_string ($3); | |
311 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
312 | ; | |
313 | ||
314 | exp : exp '.' qualified_name | |
315 | { /* exp.type::name becomes exp.*(&type::name) */ | |
316 | /* Note: this doesn't work if name is a | |
317 | static member! FIXME */ | |
318 | write_exp_elt_opcode (UNOP_ADDR); | |
319 | write_exp_elt_opcode (STRUCTOP_MEMBER); } | |
320 | ; | |
321 | ||
322 | exp : exp '.' '*' exp | |
323 | { write_exp_elt_opcode (STRUCTOP_MEMBER); } | |
324 | ; | |
325 | ||
326 | exp : exp '[' exp1 ']' | |
327 | { write_exp_elt_opcode (BINOP_SUBSCRIPT); } | |
328 | ; | |
329 | ||
330 | exp : exp '(' | |
331 | /* This is to save the value of arglist_len | |
332 | being accumulated by an outer function call. */ | |
333 | { start_arglist (); } | |
334 | arglist ')' %prec ARROW | |
335 | { write_exp_elt_opcode (OP_FUNCALL); | |
336 | write_exp_elt_longcst ((LONGEST) end_arglist ()); | |
337 | write_exp_elt_opcode (OP_FUNCALL); } | |
338 | ; | |
339 | ||
340 | lcurly : '{' | |
341 | { start_arglist (); } | |
342 | ; | |
343 | ||
344 | arglist : | |
345 | ; | |
346 | ||
347 | arglist : exp | |
348 | { arglist_len = 1; } | |
349 | ; | |
350 | ||
351 | arglist : arglist ',' exp %prec ABOVE_COMMA | |
352 | { arglist_len++; } | |
353 | ; | |
354 | ||
355 | rcurly : '}' | |
356 | { $$ = end_arglist () - 1; } | |
357 | ; | |
358 | exp : lcurly arglist rcurly %prec ARROW | |
359 | { write_exp_elt_opcode (OP_ARRAY); | |
360 | write_exp_elt_longcst ((LONGEST) 0); | |
361 | write_exp_elt_longcst ((LONGEST) $3); | |
362 | write_exp_elt_opcode (OP_ARRAY); } | |
363 | ; | |
364 | ||
365 | exp : lcurly type rcurly exp %prec UNARY | |
366 | { write_exp_elt_opcode (UNOP_MEMVAL); | |
367 | write_exp_elt_type ($2); | |
368 | write_exp_elt_opcode (UNOP_MEMVAL); } | |
369 | ; | |
370 | ||
371 | exp : '(' type ')' exp %prec UNARY | |
372 | { write_exp_elt_opcode (UNOP_CAST); | |
373 | write_exp_elt_type ($2); | |
374 | write_exp_elt_opcode (UNOP_CAST); } | |
375 | ; | |
376 | ||
377 | exp : '(' exp1 ')' | |
378 | { } | |
379 | ; | |
380 | ||
381 | /* Binary operators in order of decreasing precedence. */ | |
382 | ||
383 | exp : exp '@' exp | |
384 | { write_exp_elt_opcode (BINOP_REPEAT); } | |
385 | ; | |
386 | ||
387 | exp : exp '*' exp | |
388 | { write_exp_elt_opcode (BINOP_MUL); } | |
389 | ; | |
390 | ||
391 | exp : exp '/' exp | |
392 | { write_exp_elt_opcode (BINOP_DIV); } | |
393 | ; | |
394 | ||
395 | exp : exp '%' exp | |
396 | { write_exp_elt_opcode (BINOP_REM); } | |
397 | ; | |
398 | ||
399 | exp : exp '+' exp | |
400 | { write_exp_elt_opcode (BINOP_ADD); } | |
401 | ; | |
402 | ||
403 | exp : exp '-' exp | |
404 | { write_exp_elt_opcode (BINOP_SUB); } | |
405 | ; | |
406 | ||
407 | exp : exp LSH exp | |
408 | { write_exp_elt_opcode (BINOP_LSH); } | |
409 | ; | |
410 | ||
411 | exp : exp RSH exp | |
412 | { write_exp_elt_opcode (BINOP_RSH); } | |
413 | ; | |
414 | ||
415 | exp : exp EQUAL exp | |
416 | { write_exp_elt_opcode (BINOP_EQUAL); } | |
417 | ; | |
418 | ||
419 | exp : exp NOTEQUAL exp | |
420 | { write_exp_elt_opcode (BINOP_NOTEQUAL); } | |
421 | ; | |
422 | ||
423 | exp : exp LEQ exp | |
424 | { write_exp_elt_opcode (BINOP_LEQ); } | |
425 | ; | |
426 | ||
427 | exp : exp GEQ exp | |
428 | { write_exp_elt_opcode (BINOP_GEQ); } | |
429 | ; | |
430 | ||
431 | exp : exp '<' exp | |
432 | { write_exp_elt_opcode (BINOP_LESS); } | |
433 | ; | |
434 | ||
435 | exp : exp '>' exp | |
436 | { write_exp_elt_opcode (BINOP_GTR); } | |
437 | ; | |
438 | ||
439 | exp : exp '&' exp | |
440 | { write_exp_elt_opcode (BINOP_BITWISE_AND); } | |
441 | ; | |
442 | ||
443 | exp : exp '^' exp | |
444 | { write_exp_elt_opcode (BINOP_BITWISE_XOR); } | |
445 | ; | |
446 | ||
447 | exp : exp '|' exp | |
448 | { write_exp_elt_opcode (BINOP_BITWISE_IOR); } | |
449 | ; | |
450 | ||
451 | exp : exp ANDAND exp | |
452 | { write_exp_elt_opcode (BINOP_LOGICAL_AND); } | |
453 | ; | |
454 | ||
455 | exp : exp OROR exp | |
456 | { write_exp_elt_opcode (BINOP_LOGICAL_OR); } | |
457 | ; | |
458 | ||
459 | exp : exp '?' exp ':' exp %prec '?' | |
460 | { write_exp_elt_opcode (TERNOP_COND); } | |
461 | ; | |
462 | ||
463 | exp : exp '=' exp | |
464 | { write_exp_elt_opcode (BINOP_ASSIGN); } | |
465 | ; | |
466 | ||
467 | exp : exp ASSIGN_MODIFY exp | |
468 | { write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); | |
469 | write_exp_elt_opcode ($2); | |
470 | write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); } | |
471 | ; | |
472 | ||
473 | exp : INT | |
474 | { write_exp_elt_opcode (OP_LONG); | |
475 | write_exp_elt_type ($1.type); | |
476 | write_exp_elt_longcst ((LONGEST)($1.val)); | |
477 | write_exp_elt_opcode (OP_LONG); } | |
478 | ; | |
479 | ||
480 | exp : NAME_OR_INT | |
481 | { YYSTYPE val; | |
482 | parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val); | |
483 | write_exp_elt_opcode (OP_LONG); | |
484 | write_exp_elt_type (val.typed_val_int.type); | |
485 | write_exp_elt_longcst ((LONGEST)val.typed_val_int.val); | |
486 | write_exp_elt_opcode (OP_LONG); | |
487 | } | |
488 | ; | |
489 | ||
490 | ||
491 | exp : FLOAT | |
492 | { write_exp_elt_opcode (OP_DOUBLE); | |
493 | write_exp_elt_type ($1.type); | |
494 | write_exp_elt_dblcst ($1.dval); | |
495 | write_exp_elt_opcode (OP_DOUBLE); } | |
496 | ; | |
497 | ||
498 | exp : variable | |
499 | ; | |
500 | ||
501 | exp : VARIABLE | |
502 | /* Already written by write_dollar_variable. */ | |
503 | ; | |
504 | ||
505 | exp : SIZEOF '(' type ')' %prec UNARY | |
506 | { write_exp_elt_opcode (OP_LONG); | |
507 | write_exp_elt_type (builtin_type_int); | |
508 | CHECK_TYPEDEF ($3); | |
509 | write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3)); | |
510 | write_exp_elt_opcode (OP_LONG); } | |
511 | ; | |
512 | ||
513 | exp : STRING | |
514 | { /* C strings are converted into array constants with | |
515 | an explicit null byte added at the end. Thus | |
516 | the array upper bound is the string length. | |
517 | There is no such thing in C as a completely empty | |
518 | string. */ | |
519 | char *sp = $1.ptr; int count = $1.length; | |
520 | while (count-- > 0) | |
521 | { | |
522 | write_exp_elt_opcode (OP_LONG); | |
523 | write_exp_elt_type (builtin_type_char); | |
524 | write_exp_elt_longcst ((LONGEST)(*sp++)); | |
525 | write_exp_elt_opcode (OP_LONG); | |
526 | } | |
527 | write_exp_elt_opcode (OP_LONG); | |
528 | write_exp_elt_type (builtin_type_char); | |
529 | write_exp_elt_longcst ((LONGEST)'\0'); | |
530 | write_exp_elt_opcode (OP_LONG); | |
531 | write_exp_elt_opcode (OP_ARRAY); | |
532 | write_exp_elt_longcst ((LONGEST) 0); | |
533 | write_exp_elt_longcst ((LONGEST) ($1.length)); | |
534 | write_exp_elt_opcode (OP_ARRAY); } | |
535 | ; | |
536 | ||
537 | /* C++. */ | |
c906108c SS |
538 | exp : TRUEKEYWORD |
539 | { write_exp_elt_opcode (OP_LONG); | |
540 | write_exp_elt_type (builtin_type_bool); | |
541 | write_exp_elt_longcst ((LONGEST) 1); | |
542 | write_exp_elt_opcode (OP_LONG); } | |
543 | ; | |
544 | ||
545 | exp : FALSEKEYWORD | |
546 | { write_exp_elt_opcode (OP_LONG); | |
547 | write_exp_elt_type (builtin_type_bool); | |
548 | write_exp_elt_longcst ((LONGEST) 0); | |
549 | write_exp_elt_opcode (OP_LONG); } | |
550 | ; | |
551 | ||
552 | /* end of C++. */ | |
553 | ||
554 | block : BLOCKNAME | |
555 | { | |
556 | if ($1.sym) | |
557 | $$ = SYMBOL_BLOCK_VALUE ($1.sym); | |
558 | else | |
559 | error ("No file or function \"%s\".", | |
560 | copy_name ($1.stoken)); | |
561 | } | |
562 | | FILENAME | |
563 | { | |
564 | $$ = $1; | |
565 | } | |
566 | ; | |
567 | ||
568 | block : block COLONCOLON name | |
569 | { struct symbol *tem | |
570 | = lookup_symbol (copy_name ($3), $1, | |
176620f1 | 571 | VAR_DOMAIN, (int *) NULL, |
c906108c SS |
572 | (struct symtab **) NULL); |
573 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) | |
574 | error ("No function \"%s\" in specified context.", | |
575 | copy_name ($3)); | |
576 | $$ = SYMBOL_BLOCK_VALUE (tem); } | |
577 | ; | |
578 | ||
579 | variable: block COLONCOLON name | |
580 | { struct symbol *sym; | |
581 | sym = lookup_symbol (copy_name ($3), $1, | |
176620f1 | 582 | VAR_DOMAIN, (int *) NULL, |
c906108c SS |
583 | (struct symtab **) NULL); |
584 | if (sym == 0) | |
585 | error ("No symbol \"%s\" in specified context.", | |
586 | copy_name ($3)); | |
587 | ||
588 | write_exp_elt_opcode (OP_VAR_VALUE); | |
589 | /* block_found is set by lookup_symbol. */ | |
590 | write_exp_elt_block (block_found); | |
591 | write_exp_elt_sym (sym); | |
592 | write_exp_elt_opcode (OP_VAR_VALUE); } | |
593 | ; | |
594 | ||
595 | qualified_name: typebase COLONCOLON name | |
596 | { | |
597 | struct type *type = $1; | |
598 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
79c2c32d DC |
599 | && TYPE_CODE (type) != TYPE_CODE_UNION |
600 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
c906108c SS |
601 | error ("`%s' is not defined as an aggregate type.", |
602 | TYPE_NAME (type)); | |
603 | ||
604 | write_exp_elt_opcode (OP_SCOPE); | |
605 | write_exp_elt_type (type); | |
606 | write_exp_string ($3); | |
607 | write_exp_elt_opcode (OP_SCOPE); | |
608 | } | |
609 | | typebase COLONCOLON '~' name | |
610 | { | |
611 | struct type *type = $1; | |
612 | struct stoken tmp_token; | |
613 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
79c2c32d DC |
614 | && TYPE_CODE (type) != TYPE_CODE_UNION |
615 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
c906108c SS |
616 | error ("`%s' is not defined as an aggregate type.", |
617 | TYPE_NAME (type)); | |
618 | ||
619 | tmp_token.ptr = (char*) alloca ($4.length + 2); | |
620 | tmp_token.length = $4.length + 1; | |
621 | tmp_token.ptr[0] = '~'; | |
622 | memcpy (tmp_token.ptr+1, $4.ptr, $4.length); | |
623 | tmp_token.ptr[tmp_token.length] = 0; | |
624 | ||
625 | /* Check for valid destructor name. */ | |
626 | destructor_name_p (tmp_token.ptr, type); | |
627 | write_exp_elt_opcode (OP_SCOPE); | |
628 | write_exp_elt_type (type); | |
629 | write_exp_string (tmp_token); | |
630 | write_exp_elt_opcode (OP_SCOPE); | |
631 | } | |
632 | ; | |
633 | ||
634 | variable: qualified_name | |
635 | | COLONCOLON name | |
636 | { | |
637 | char *name = copy_name ($2); | |
638 | struct symbol *sym; | |
639 | struct minimal_symbol *msymbol; | |
640 | ||
641 | sym = | |
642 | lookup_symbol (name, (const struct block *) NULL, | |
176620f1 | 643 | VAR_DOMAIN, (int *) NULL, |
c906108c SS |
644 | (struct symtab **) NULL); |
645 | if (sym) | |
646 | { | |
647 | write_exp_elt_opcode (OP_VAR_VALUE); | |
648 | write_exp_elt_block (NULL); | |
649 | write_exp_elt_sym (sym); | |
650 | write_exp_elt_opcode (OP_VAR_VALUE); | |
651 | break; | |
652 | } | |
653 | ||
654 | msymbol = lookup_minimal_symbol (name, NULL, NULL); | |
655 | if (msymbol != NULL) | |
656 | { | |
657 | write_exp_msymbol (msymbol, | |
658 | lookup_function_type (builtin_type_int), | |
659 | builtin_type_int); | |
660 | } | |
661 | else | |
662 | if (!have_full_symbols () && !have_partial_symbols ()) | |
663 | error ("No symbol table is loaded. Use the \"file\" command."); | |
664 | else | |
665 | error ("No symbol \"%s\" in current context.", name); | |
666 | } | |
667 | ; | |
668 | ||
669 | variable: name_not_typename | |
670 | { struct symbol *sym = $1.sym; | |
671 | ||
672 | if (sym) | |
673 | { | |
674 | if (symbol_read_needs_frame (sym)) | |
675 | { | |
676 | if (innermost_block == 0 || | |
677 | contained_in (block_found, | |
678 | innermost_block)) | |
679 | innermost_block = block_found; | |
680 | } | |
681 | ||
682 | write_exp_elt_opcode (OP_VAR_VALUE); | |
683 | /* We want to use the selected frame, not | |
684 | another more inner frame which happens to | |
685 | be in the same block. */ | |
686 | write_exp_elt_block (NULL); | |
687 | write_exp_elt_sym (sym); | |
688 | write_exp_elt_opcode (OP_VAR_VALUE); | |
689 | } | |
690 | else if ($1.is_a_field_of_this) | |
691 | { | |
692 | /* C++: it hangs off of `this'. Must | |
693 | not inadvertently convert from a method call | |
694 | to data ref. */ | |
695 | if (innermost_block == 0 || | |
696 | contained_in (block_found, innermost_block)) | |
697 | innermost_block = block_found; | |
698 | write_exp_elt_opcode (OP_THIS); | |
699 | write_exp_elt_opcode (OP_THIS); | |
700 | write_exp_elt_opcode (STRUCTOP_PTR); | |
701 | write_exp_string ($1.stoken); | |
702 | write_exp_elt_opcode (STRUCTOP_PTR); | |
703 | } | |
704 | else | |
705 | { | |
706 | struct minimal_symbol *msymbol; | |
710122da | 707 | char *arg = copy_name ($1.stoken); |
c906108c SS |
708 | |
709 | msymbol = | |
710 | lookup_minimal_symbol (arg, NULL, NULL); | |
711 | if (msymbol != NULL) | |
712 | { | |
713 | write_exp_msymbol (msymbol, | |
714 | lookup_function_type (builtin_type_int), | |
715 | builtin_type_int); | |
716 | } | |
717 | else if (!have_full_symbols () && !have_partial_symbols ()) | |
718 | error ("No symbol table is loaded. Use the \"file\" command."); | |
719 | else | |
720 | error ("No symbol \"%s\" in current context.", | |
721 | copy_name ($1.stoken)); | |
722 | } | |
723 | } | |
724 | ; | |
725 | ||
47663de5 MS |
726 | space_identifier : '@' NAME |
727 | { push_type_address_space (copy_name ($2.stoken)); | |
728 | push_type (tp_space_identifier); | |
729 | } | |
730 | ; | |
c906108c | 731 | |
47663de5 MS |
732 | const_or_volatile: const_or_volatile_noopt |
733 | | | |
c906108c | 734 | ; |
47663de5 MS |
735 | |
736 | cv_with_space_id : const_or_volatile space_identifier const_or_volatile | |
56e2d25a | 737 | ; |
47663de5 MS |
738 | |
739 | const_or_volatile_or_space_identifier_noopt: cv_with_space_id | |
740 | | const_or_volatile_noopt | |
56e2d25a | 741 | ; |
47663de5 MS |
742 | |
743 | const_or_volatile_or_space_identifier: | |
744 | const_or_volatile_or_space_identifier_noopt | |
745 | | | |
56e2d25a | 746 | ; |
47663de5 | 747 | |
c906108c SS |
748 | abs_decl: '*' |
749 | { push_type (tp_pointer); $$ = 0; } | |
750 | | '*' abs_decl | |
751 | { push_type (tp_pointer); $$ = $2; } | |
752 | | '&' | |
753 | { push_type (tp_reference); $$ = 0; } | |
754 | | '&' abs_decl | |
755 | { push_type (tp_reference); $$ = $2; } | |
756 | | direct_abs_decl | |
757 | ; | |
758 | ||
759 | direct_abs_decl: '(' abs_decl ')' | |
760 | { $$ = $2; } | |
761 | | direct_abs_decl array_mod | |
762 | { | |
763 | push_type_int ($2); | |
764 | push_type (tp_array); | |
765 | } | |
766 | | array_mod | |
767 | { | |
768 | push_type_int ($1); | |
769 | push_type (tp_array); | |
770 | $$ = 0; | |
771 | } | |
772 | ||
773 | | direct_abs_decl func_mod | |
774 | { push_type (tp_function); } | |
775 | | func_mod | |
776 | { push_type (tp_function); } | |
777 | ; | |
778 | ||
779 | array_mod: '[' ']' | |
780 | { $$ = -1; } | |
781 | | '[' INT ']' | |
782 | { $$ = $2.val; } | |
783 | ; | |
784 | ||
785 | func_mod: '(' ')' | |
786 | { $$ = 0; } | |
787 | | '(' nonempty_typelist ')' | |
8dbb1c65 | 788 | { free ($2); $$ = 0; } |
c906108c SS |
789 | ; |
790 | ||
791 | /* We used to try to recognize more pointer to member types here, but | |
792 | that didn't work (shift/reduce conflicts meant that these rules never | |
793 | got executed). The problem is that | |
794 | int (foo::bar::baz::bizzle) | |
795 | is a function type but | |
796 | int (foo::bar::baz::bizzle::*) | |
797 | is a pointer to member type. Stroustrup loses again! */ | |
798 | ||
799 | type : ptype | |
800 | | typebase COLONCOLON '*' | |
801 | { $$ = lookup_member_type (builtin_type_int, $1); } | |
802 | ; | |
803 | ||
804 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ | |
805 | : TYPENAME | |
806 | { $$ = $1.type; } | |
807 | | INT_KEYWORD | |
808 | { $$ = builtin_type_int; } | |
809 | | LONG | |
810 | { $$ = builtin_type_long; } | |
811 | | SHORT | |
812 | { $$ = builtin_type_short; } | |
813 | | LONG INT_KEYWORD | |
814 | { $$ = builtin_type_long; } | |
b2c4da81 L |
815 | | LONG SIGNED_KEYWORD INT_KEYWORD |
816 | { $$ = builtin_type_long; } | |
817 | | LONG SIGNED_KEYWORD | |
818 | { $$ = builtin_type_long; } | |
819 | | SIGNED_KEYWORD LONG INT_KEYWORD | |
820 | { $$ = builtin_type_long; } | |
c906108c SS |
821 | | UNSIGNED LONG INT_KEYWORD |
822 | { $$ = builtin_type_unsigned_long; } | |
b2c4da81 L |
823 | | LONG UNSIGNED INT_KEYWORD |
824 | { $$ = builtin_type_unsigned_long; } | |
825 | | LONG UNSIGNED | |
826 | { $$ = builtin_type_unsigned_long; } | |
c906108c SS |
827 | | LONG LONG |
828 | { $$ = builtin_type_long_long; } | |
829 | | LONG LONG INT_KEYWORD | |
830 | { $$ = builtin_type_long_long; } | |
b2c4da81 L |
831 | | LONG LONG SIGNED_KEYWORD INT_KEYWORD |
832 | { $$ = builtin_type_long_long; } | |
833 | | LONG LONG SIGNED_KEYWORD | |
834 | { $$ = builtin_type_long_long; } | |
835 | | SIGNED_KEYWORD LONG LONG | |
836 | { $$ = builtin_type_long_long; } | |
55baeb84 AS |
837 | | SIGNED_KEYWORD LONG LONG INT_KEYWORD |
838 | { $$ = builtin_type_long_long; } | |
c906108c SS |
839 | | UNSIGNED LONG LONG |
840 | { $$ = builtin_type_unsigned_long_long; } | |
841 | | UNSIGNED LONG LONG INT_KEYWORD | |
842 | { $$ = builtin_type_unsigned_long_long; } | |
b2c4da81 L |
843 | | LONG LONG UNSIGNED |
844 | { $$ = builtin_type_unsigned_long_long; } | |
845 | | LONG LONG UNSIGNED INT_KEYWORD | |
846 | { $$ = builtin_type_unsigned_long_long; } | |
c906108c SS |
847 | | SHORT INT_KEYWORD |
848 | { $$ = builtin_type_short; } | |
b2c4da81 L |
849 | | SHORT SIGNED_KEYWORD INT_KEYWORD |
850 | { $$ = builtin_type_short; } | |
851 | | SHORT SIGNED_KEYWORD | |
852 | { $$ = builtin_type_short; } | |
c906108c SS |
853 | | UNSIGNED SHORT INT_KEYWORD |
854 | { $$ = builtin_type_unsigned_short; } | |
b2c4da81 L |
855 | | SHORT UNSIGNED |
856 | { $$ = builtin_type_unsigned_short; } | |
857 | | SHORT UNSIGNED INT_KEYWORD | |
858 | { $$ = builtin_type_unsigned_short; } | |
c906108c SS |
859 | | DOUBLE_KEYWORD |
860 | { $$ = builtin_type_double; } | |
861 | | LONG DOUBLE_KEYWORD | |
862 | { $$ = builtin_type_long_double; } | |
863 | | STRUCT name | |
864 | { $$ = lookup_struct (copy_name ($2), | |
865 | expression_context_block); } | |
866 | | CLASS name | |
867 | { $$ = lookup_struct (copy_name ($2), | |
868 | expression_context_block); } | |
869 | | UNION name | |
870 | { $$ = lookup_union (copy_name ($2), | |
871 | expression_context_block); } | |
872 | | ENUM name | |
873 | { $$ = lookup_enum (copy_name ($2), | |
874 | expression_context_block); } | |
875 | | UNSIGNED typename | |
876 | { $$ = lookup_unsigned_typename (TYPE_NAME($2.type)); } | |
877 | | UNSIGNED | |
878 | { $$ = builtin_type_unsigned_int; } | |
879 | | SIGNED_KEYWORD typename | |
880 | { $$ = lookup_signed_typename (TYPE_NAME($2.type)); } | |
881 | | SIGNED_KEYWORD | |
882 | { $$ = builtin_type_int; } | |
883 | /* It appears that this rule for templates is never | |
884 | reduced; template recognition happens by lookahead | |
885 | in the token processing code in yylex. */ | |
886 | | TEMPLATE name '<' type '>' | |
887 | { $$ = lookup_template_type(copy_name($2), $4, | |
888 | expression_context_block); | |
889 | } | |
47663de5 MS |
890 | | const_or_volatile_or_space_identifier_noopt typebase |
891 | { $$ = follow_types ($2); } | |
892 | | typebase const_or_volatile_or_space_identifier_noopt | |
893 | { $$ = follow_types ($1); } | |
79c2c32d DC |
894 | | qualified_type |
895 | ; | |
896 | ||
897 | /* FIXME: carlton/2003-09-25: This next bit leads to lots of | |
898 | reduce-reduce conflicts, because the parser doesn't know whether or | |
899 | not to use qualified_name or qualified_type: the rules are | |
900 | identical. If the parser is parsing 'A::B::x', then, when it sees | |
901 | the second '::', it knows that the expression to the left of it has | |
902 | to be a type, so it uses qualified_type. But if it is parsing just | |
903 | 'A::B', then it doesn't have any way of knowing which rule to use, | |
904 | so there's a reduce-reduce conflict; it picks qualified_name, since | |
905 | that occurs earlier in this file than qualified_type. | |
906 | ||
907 | There's no good way to fix this with the grammar as it stands; as | |
908 | far as I can tell, some of the problems arise from ambiguities that | |
909 | GDB introduces ('start' can be either an expression or a type), but | |
910 | some of it is inherent to the nature of C++ (you want to treat the | |
911 | input "(FOO)" fairly differently depending on whether FOO is an | |
912 | expression or a type, and if FOO is a complex expression, this can | |
913 | be hard to determine at the right time). Fortunately, it works | |
914 | pretty well in most cases. For example, if you do 'ptype A::B', | |
915 | where A::B is a nested type, then the parser will mistakenly | |
916 | misidentify it as an expression; but evaluate_subexp will get | |
917 | called with 'noside' set to EVAL_AVOID_SIDE_EFFECTS, and everything | |
918 | will work out anyways. But there are situations where the parser | |
919 | will get confused: the most common one that I've run into is when | |
920 | you want to do | |
921 | ||
922 | print *((A::B *) x)" | |
923 | ||
924 | where the parser doesn't realize that A::B has to be a type until | |
925 | it hits the first right paren, at which point it's too late. (The | |
926 | workaround is to type "print *(('A::B' *) x)" instead.) (And | |
927 | another solution is to fix our symbol-handling code so that the | |
928 | user never wants to type something like that in the first place, | |
929 | because we get all the types right without the user's help!) | |
930 | ||
931 | Perhaps we could fix this by making the lexer smarter. Some of | |
932 | this functionality used to be in the lexer, but in a way that | |
933 | worked even less well than the current solution: that attempt | |
934 | involved having the parser sometimes handle '::' and having the | |
935 | lexer sometimes handle it, and without a clear division of | |
936 | responsibility, it quickly degenerated into a big mess. Probably | |
937 | the eventual correct solution will give more of a role to the lexer | |
938 | (ideally via code that is shared between the lexer and | |
939 | decode_line_1), but I'm not holding my breath waiting for somebody | |
940 | to get around to cleaning this up... */ | |
941 | ||
79c2c32d DC |
942 | qualified_type: typebase COLONCOLON name |
943 | { | |
944 | struct type *type = $1; | |
945 | struct type *new_type; | |
946 | char *ncopy = alloca ($3.length + 1); | |
947 | ||
948 | memcpy (ncopy, $3.ptr, $3.length); | |
949 | ncopy[$3.length] = '\0'; | |
950 | ||
63d06c5c DC |
951 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
952 | && TYPE_CODE (type) != TYPE_CODE_UNION | |
953 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
954 | error ("`%s' is not defined as an aggregate type.", | |
79c2c32d DC |
955 | TYPE_NAME (type)); |
956 | ||
957 | new_type = cp_lookup_nested_type (type, ncopy, | |
958 | expression_context_block); | |
959 | if (new_type == NULL) | |
63d06c5c | 960 | error ("No type \"%s\" within class or namespace \"%s\".", |
79c2c32d DC |
961 | ncopy, TYPE_NAME (type)); |
962 | ||
963 | $$ = new_type; | |
964 | } | |
c906108c SS |
965 | ; |
966 | ||
967 | typename: TYPENAME | |
968 | | INT_KEYWORD | |
969 | { | |
970 | $$.stoken.ptr = "int"; | |
971 | $$.stoken.length = 3; | |
972 | $$.type = builtin_type_int; | |
973 | } | |
974 | | LONG | |
975 | { | |
976 | $$.stoken.ptr = "long"; | |
977 | $$.stoken.length = 4; | |
978 | $$.type = builtin_type_long; | |
979 | } | |
980 | | SHORT | |
981 | { | |
982 | $$.stoken.ptr = "short"; | |
983 | $$.stoken.length = 5; | |
984 | $$.type = builtin_type_short; | |
985 | } | |
986 | ; | |
987 | ||
988 | nonempty_typelist | |
989 | : type | |
990 | { $$ = (struct type **) malloc (sizeof (struct type *) * 2); | |
991 | $<ivec>$[0] = 1; /* Number of types in vector */ | |
992 | $$[1] = $1; | |
993 | } | |
994 | | nonempty_typelist ',' type | |
995 | { int len = sizeof (struct type *) * (++($<ivec>1[0]) + 1); | |
996 | $$ = (struct type **) realloc ((char *) $1, len); | |
997 | $$[$<ivec>$[0]] = $3; | |
998 | } | |
999 | ; | |
1000 | ||
47663de5 MS |
1001 | ptype : typebase |
1002 | | ptype const_or_volatile_or_space_identifier abs_decl const_or_volatile_or_space_identifier | |
1003 | { $$ = follow_types ($1); } | |
1004 | ; | |
1005 | ||
1006 | const_and_volatile: CONST_KEYWORD VOLATILE_KEYWORD | |
1007 | | VOLATILE_KEYWORD CONST_KEYWORD | |
1008 | ; | |
1009 | ||
1010 | const_or_volatile_noopt: const_and_volatile | |
1011 | { push_type (tp_const); | |
1012 | push_type (tp_volatile); | |
1013 | } | |
1014 | | CONST_KEYWORD | |
1015 | { push_type (tp_const); } | |
1016 | | VOLATILE_KEYWORD | |
1017 | { push_type (tp_volatile); } | |
1018 | ; | |
1019 | ||
c906108c SS |
1020 | name : NAME { $$ = $1.stoken; } |
1021 | | BLOCKNAME { $$ = $1.stoken; } | |
1022 | | TYPENAME { $$ = $1.stoken; } | |
1023 | | NAME_OR_INT { $$ = $1.stoken; } | |
1024 | ; | |
1025 | ||
1026 | name_not_typename : NAME | |
1027 | | BLOCKNAME | |
1028 | /* These would be useful if name_not_typename was useful, but it is just | |
1029 | a fake for "variable", so these cause reduce/reduce conflicts because | |
1030 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, | |
1031 | =exp) or just an exp. If name_not_typename was ever used in an lvalue | |
1032 | context where only a name could occur, this might be useful. | |
1033 | | NAME_OR_INT | |
1034 | */ | |
1035 | ; | |
1036 | ||
1037 | %% | |
1038 | ||
1039 | /* Take care of parsing a number (anything that starts with a digit). | |
1040 | Set yylval and return the token type; update lexptr. | |
1041 | LEN is the number of characters in it. */ | |
1042 | ||
1043 | /*** Needs some error checking for the float case ***/ | |
1044 | ||
1045 | static int | |
1046 | parse_number (p, len, parsed_float, putithere) | |
710122da DC |
1047 | char *p; |
1048 | int len; | |
c906108c SS |
1049 | int parsed_float; |
1050 | YYSTYPE *putithere; | |
1051 | { | |
1052 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values | |
1053 | here, and we do kind of silly things like cast to unsigned. */ | |
710122da DC |
1054 | LONGEST n = 0; |
1055 | LONGEST prevn = 0; | |
c906108c SS |
1056 | ULONGEST un; |
1057 | ||
710122da DC |
1058 | int i = 0; |
1059 | int c; | |
1060 | int base = input_radix; | |
c906108c SS |
1061 | int unsigned_p = 0; |
1062 | ||
1063 | /* Number of "L" suffixes encountered. */ | |
1064 | int long_p = 0; | |
1065 | ||
1066 | /* We have found a "L" or "U" suffix. */ | |
1067 | int found_suffix = 0; | |
1068 | ||
1069 | ULONGEST high_bit; | |
1070 | struct type *signed_type; | |
1071 | struct type *unsigned_type; | |
1072 | ||
1073 | if (parsed_float) | |
1074 | { | |
1075 | /* It's a float since it contains a point or an exponent. */ | |
1076 | char c; | |
1077 | int num = 0; /* number of tokens scanned by scanf */ | |
1078 | char saved_char = p[len]; | |
1079 | ||
1080 | p[len] = 0; /* null-terminate the token */ | |
1081 | if (sizeof (putithere->typed_val_float.dval) <= sizeof (float)) | |
1082 | num = sscanf (p, "%g%c", (float *) &putithere->typed_val_float.dval,&c); | |
1083 | else if (sizeof (putithere->typed_val_float.dval) <= sizeof (double)) | |
1084 | num = sscanf (p, "%lg%c", (double *) &putithere->typed_val_float.dval,&c); | |
1085 | else | |
1086 | { | |
1087 | #ifdef SCANF_HAS_LONG_DOUBLE | |
1088 | num = sscanf (p, "%Lg%c", &putithere->typed_val_float.dval,&c); | |
1089 | #else | |
1090 | /* Scan it into a double, then assign it to the long double. | |
1091 | This at least wins with values representable in the range | |
1092 | of doubles. */ | |
1093 | double temp; | |
1094 | num = sscanf (p, "%lg%c", &temp,&c); | |
1095 | putithere->typed_val_float.dval = temp; | |
1096 | #endif | |
1097 | } | |
1098 | p[len] = saved_char; /* restore the input stream */ | |
1099 | if (num != 1) /* check scanf found ONLY a float ... */ | |
1100 | return ERROR; | |
1101 | /* See if it has `f' or `l' suffix (float or long double). */ | |
1102 | ||
1103 | c = tolower (p[len - 1]); | |
1104 | ||
1105 | if (c == 'f') | |
1106 | putithere->typed_val_float.type = builtin_type_float; | |
1107 | else if (c == 'l') | |
1108 | putithere->typed_val_float.type = builtin_type_long_double; | |
1109 | else if (isdigit (c) || c == '.') | |
1110 | putithere->typed_val_float.type = builtin_type_double; | |
1111 | else | |
1112 | return ERROR; | |
1113 | ||
1114 | return FLOAT; | |
1115 | } | |
1116 | ||
1117 | /* Handle base-switching prefixes 0x, 0t, 0d, 0 */ | |
1118 | if (p[0] == '0') | |
1119 | switch (p[1]) | |
1120 | { | |
1121 | case 'x': | |
1122 | case 'X': | |
1123 | if (len >= 3) | |
1124 | { | |
1125 | p += 2; | |
1126 | base = 16; | |
1127 | len -= 2; | |
1128 | } | |
1129 | break; | |
1130 | ||
1131 | case 't': | |
1132 | case 'T': | |
1133 | case 'd': | |
1134 | case 'D': | |
1135 | if (len >= 3) | |
1136 | { | |
1137 | p += 2; | |
1138 | base = 10; | |
1139 | len -= 2; | |
1140 | } | |
1141 | break; | |
1142 | ||
1143 | default: | |
1144 | base = 8; | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | while (len-- > 0) | |
1149 | { | |
1150 | c = *p++; | |
1151 | if (c >= 'A' && c <= 'Z') | |
1152 | c += 'a' - 'A'; | |
1153 | if (c != 'l' && c != 'u') | |
1154 | n *= base; | |
1155 | if (c >= '0' && c <= '9') | |
1156 | { | |
1157 | if (found_suffix) | |
1158 | return ERROR; | |
1159 | n += i = c - '0'; | |
1160 | } | |
1161 | else | |
1162 | { | |
1163 | if (base > 10 && c >= 'a' && c <= 'f') | |
1164 | { | |
1165 | if (found_suffix) | |
1166 | return ERROR; | |
1167 | n += i = c - 'a' + 10; | |
1168 | } | |
1169 | else if (c == 'l') | |
1170 | { | |
1171 | ++long_p; | |
1172 | found_suffix = 1; | |
1173 | } | |
1174 | else if (c == 'u') | |
1175 | { | |
1176 | unsigned_p = 1; | |
1177 | found_suffix = 1; | |
1178 | } | |
1179 | else | |
1180 | return ERROR; /* Char not a digit */ | |
1181 | } | |
1182 | if (i >= base) | |
1183 | return ERROR; /* Invalid digit in this base */ | |
1184 | ||
1185 | /* Portably test for overflow (only works for nonzero values, so make | |
1186 | a second check for zero). FIXME: Can't we just make n and prevn | |
1187 | unsigned and avoid this? */ | |
1188 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) | |
1189 | unsigned_p = 1; /* Try something unsigned */ | |
1190 | ||
1191 | /* Portably test for unsigned overflow. | |
1192 | FIXME: This check is wrong; for example it doesn't find overflow | |
1193 | on 0x123456789 when LONGEST is 32 bits. */ | |
1194 | if (c != 'l' && c != 'u' && n != 0) | |
1195 | { | |
1196 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) | |
1197 | error ("Numeric constant too large."); | |
1198 | } | |
1199 | prevn = n; | |
1200 | } | |
1201 | ||
1202 | /* An integer constant is an int, a long, or a long long. An L | |
1203 | suffix forces it to be long; an LL suffix forces it to be long | |
1204 | long. If not forced to a larger size, it gets the first type of | |
1205 | the above that it fits in. To figure out whether it fits, we | |
1206 | shift it right and see whether anything remains. Note that we | |
1207 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one | |
1208 | operation, because many compilers will warn about such a shift | |
1209 | (which always produces a zero result). Sometimes TARGET_INT_BIT | |
1210 | or TARGET_LONG_BIT will be that big, sometimes not. To deal with | |
1211 | the case where it is we just always shift the value more than | |
1212 | once, with fewer bits each time. */ | |
1213 | ||
1214 | un = (ULONGEST)n >> 2; | |
1215 | if (long_p == 0 | |
1216 | && (un >> (TARGET_INT_BIT - 2)) == 0) | |
1217 | { | |
1218 | high_bit = ((ULONGEST)1) << (TARGET_INT_BIT-1); | |
1219 | ||
1220 | /* A large decimal (not hex or octal) constant (between INT_MAX | |
1221 | and UINT_MAX) is a long or unsigned long, according to ANSI, | |
1222 | never an unsigned int, but this code treats it as unsigned | |
1223 | int. This probably should be fixed. GCC gives a warning on | |
1224 | such constants. */ | |
1225 | ||
1226 | unsigned_type = builtin_type_unsigned_int; | |
1227 | signed_type = builtin_type_int; | |
1228 | } | |
1229 | else if (long_p <= 1 | |
1230 | && (un >> (TARGET_LONG_BIT - 2)) == 0) | |
1231 | { | |
1232 | high_bit = ((ULONGEST)1) << (TARGET_LONG_BIT-1); | |
1233 | unsigned_type = builtin_type_unsigned_long; | |
1234 | signed_type = builtin_type_long; | |
1235 | } | |
1236 | else | |
1237 | { | |
1238 | int shift; | |
1239 | if (sizeof (ULONGEST) * HOST_CHAR_BIT < TARGET_LONG_LONG_BIT) | |
1240 | /* A long long does not fit in a LONGEST. */ | |
1241 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); | |
1242 | else | |
1243 | shift = (TARGET_LONG_LONG_BIT - 1); | |
1244 | high_bit = (ULONGEST) 1 << shift; | |
1245 | unsigned_type = builtin_type_unsigned_long_long; | |
1246 | signed_type = builtin_type_long_long; | |
1247 | } | |
1248 | ||
1249 | putithere->typed_val_int.val = n; | |
1250 | ||
1251 | /* If the high bit of the worked out type is set then this number | |
1252 | has to be unsigned. */ | |
1253 | ||
1254 | if (unsigned_p || (n & high_bit)) | |
1255 | { | |
1256 | putithere->typed_val_int.type = unsigned_type; | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | putithere->typed_val_int.type = signed_type; | |
1261 | } | |
1262 | ||
1263 | return INT; | |
1264 | } | |
1265 | ||
1266 | struct token | |
1267 | { | |
1268 | char *operator; | |
1269 | int token; | |
1270 | enum exp_opcode opcode; | |
1271 | }; | |
1272 | ||
1273 | static const struct token tokentab3[] = | |
1274 | { | |
1275 | {">>=", ASSIGN_MODIFY, BINOP_RSH}, | |
1276 | {"<<=", ASSIGN_MODIFY, BINOP_LSH} | |
1277 | }; | |
1278 | ||
1279 | static const struct token tokentab2[] = | |
1280 | { | |
1281 | {"+=", ASSIGN_MODIFY, BINOP_ADD}, | |
1282 | {"-=", ASSIGN_MODIFY, BINOP_SUB}, | |
1283 | {"*=", ASSIGN_MODIFY, BINOP_MUL}, | |
1284 | {"/=", ASSIGN_MODIFY, BINOP_DIV}, | |
1285 | {"%=", ASSIGN_MODIFY, BINOP_REM}, | |
1286 | {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR}, | |
1287 | {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND}, | |
1288 | {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR}, | |
1289 | {"++", INCREMENT, BINOP_END}, | |
1290 | {"--", DECREMENT, BINOP_END}, | |
1291 | {"->", ARROW, BINOP_END}, | |
1292 | {"&&", ANDAND, BINOP_END}, | |
1293 | {"||", OROR, BINOP_END}, | |
1294 | {"::", COLONCOLON, BINOP_END}, | |
1295 | {"<<", LSH, BINOP_END}, | |
1296 | {">>", RSH, BINOP_END}, | |
1297 | {"==", EQUAL, BINOP_END}, | |
1298 | {"!=", NOTEQUAL, BINOP_END}, | |
1299 | {"<=", LEQ, BINOP_END}, | |
1300 | {">=", GEQ, BINOP_END} | |
1301 | }; | |
1302 | ||
1303 | /* Read one token, getting characters through lexptr. */ | |
1304 | ||
1305 | static int | |
1306 | yylex () | |
1307 | { | |
1308 | int c; | |
1309 | int namelen; | |
1310 | unsigned int i; | |
1311 | char *tokstart; | |
1312 | char *tokptr; | |
1313 | int tempbufindex; | |
1314 | static char *tempbuf; | |
1315 | static int tempbufsize; | |
1316 | struct symbol * sym_class = NULL; | |
1317 | char * token_string = NULL; | |
1318 | int class_prefix = 0; | |
1319 | int unquoted_expr; | |
1320 | ||
1321 | retry: | |
1322 | ||
84f0252a JB |
1323 | /* Check if this is a macro invocation that we need to expand. */ |
1324 | if (! scanning_macro_expansion ()) | |
1325 | { | |
1326 | char *expanded = macro_expand_next (&lexptr, | |
1327 | expression_macro_lookup_func, | |
1328 | expression_macro_lookup_baton); | |
1329 | ||
1330 | if (expanded) | |
1331 | scan_macro_expansion (expanded); | |
1332 | } | |
1333 | ||
665132f9 | 1334 | prev_lexptr = lexptr; |
c906108c SS |
1335 | unquoted_expr = 1; |
1336 | ||
1337 | tokstart = lexptr; | |
1338 | /* See if it is a special token of length 3. */ | |
1339 | for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++) | |
bf896cb0 | 1340 | if (strncmp (tokstart, tokentab3[i].operator, 3) == 0) |
c906108c SS |
1341 | { |
1342 | lexptr += 3; | |
1343 | yylval.opcode = tokentab3[i].opcode; | |
1344 | return tokentab3[i].token; | |
1345 | } | |
1346 | ||
1347 | /* See if it is a special token of length 2. */ | |
1348 | for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++) | |
bf896cb0 | 1349 | if (strncmp (tokstart, tokentab2[i].operator, 2) == 0) |
c906108c SS |
1350 | { |
1351 | lexptr += 2; | |
1352 | yylval.opcode = tokentab2[i].opcode; | |
1353 | return tokentab2[i].token; | |
1354 | } | |
1355 | ||
1356 | switch (c = *tokstart) | |
1357 | { | |
1358 | case 0: | |
84f0252a JB |
1359 | /* If we were just scanning the result of a macro expansion, |
1360 | then we need to resume scanning the original text. | |
1361 | Otherwise, we were already scanning the original text, and | |
1362 | we're really done. */ | |
1363 | if (scanning_macro_expansion ()) | |
1364 | { | |
1365 | finished_macro_expansion (); | |
1366 | goto retry; | |
1367 | } | |
1368 | else | |
1369 | return 0; | |
c906108c SS |
1370 | |
1371 | case ' ': | |
1372 | case '\t': | |
1373 | case '\n': | |
1374 | lexptr++; | |
1375 | goto retry; | |
1376 | ||
1377 | case '\'': | |
1378 | /* We either have a character constant ('0' or '\177' for example) | |
1379 | or we have a quoted symbol reference ('foo(int,int)' in C++ | |
1380 | for example). */ | |
1381 | lexptr++; | |
1382 | c = *lexptr++; | |
1383 | if (c == '\\') | |
1384 | c = parse_escape (&lexptr); | |
1385 | else if (c == '\'') | |
1386 | error ("Empty character constant."); | |
234b45d4 KB |
1387 | else if (! host_char_to_target (c, &c)) |
1388 | { | |
1389 | int toklen = lexptr - tokstart + 1; | |
1390 | char *tok = alloca (toklen + 1); | |
1391 | memcpy (tok, tokstart, toklen); | |
1392 | tok[toklen] = '\0'; | |
1393 | error ("There is no character corresponding to %s in the target " | |
1394 | "character set `%s'.", tok, target_charset ()); | |
1395 | } | |
c906108c SS |
1396 | |
1397 | yylval.typed_val_int.val = c; | |
1398 | yylval.typed_val_int.type = builtin_type_char; | |
1399 | ||
1400 | c = *lexptr++; | |
1401 | if (c != '\'') | |
1402 | { | |
1403 | namelen = skip_quoted (tokstart) - tokstart; | |
1404 | if (namelen > 2) | |
1405 | { | |
1406 | lexptr = tokstart + namelen; | |
1407 | unquoted_expr = 0; | |
1408 | if (lexptr[-1] != '\'') | |
1409 | error ("Unmatched single quote."); | |
1410 | namelen -= 2; | |
1411 | tokstart++; | |
1412 | goto tryname; | |
1413 | } | |
1414 | error ("Invalid character constant."); | |
1415 | } | |
1416 | return INT; | |
1417 | ||
1418 | case '(': | |
1419 | paren_depth++; | |
1420 | lexptr++; | |
1421 | return c; | |
1422 | ||
1423 | case ')': | |
1424 | if (paren_depth == 0) | |
1425 | return 0; | |
1426 | paren_depth--; | |
1427 | lexptr++; | |
1428 | return c; | |
1429 | ||
1430 | case ',': | |
84f0252a JB |
1431 | if (comma_terminates |
1432 | && paren_depth == 0 | |
1433 | && ! scanning_macro_expansion ()) | |
c906108c SS |
1434 | return 0; |
1435 | lexptr++; | |
1436 | return c; | |
1437 | ||
1438 | case '.': | |
1439 | /* Might be a floating point number. */ | |
1440 | if (lexptr[1] < '0' || lexptr[1] > '9') | |
1441 | goto symbol; /* Nope, must be a symbol. */ | |
1442 | /* FALL THRU into number case. */ | |
1443 | ||
1444 | case '0': | |
1445 | case '1': | |
1446 | case '2': | |
1447 | case '3': | |
1448 | case '4': | |
1449 | case '5': | |
1450 | case '6': | |
1451 | case '7': | |
1452 | case '8': | |
1453 | case '9': | |
1454 | { | |
1455 | /* It's a number. */ | |
1456 | int got_dot = 0, got_e = 0, toktype; | |
710122da | 1457 | char *p = tokstart; |
c906108c SS |
1458 | int hex = input_radix > 10; |
1459 | ||
1460 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
1461 | { | |
1462 | p += 2; | |
1463 | hex = 1; | |
1464 | } | |
1465 | else if (c == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D')) | |
1466 | { | |
1467 | p += 2; | |
1468 | hex = 0; | |
1469 | } | |
1470 | ||
1471 | for (;; ++p) | |
1472 | { | |
1473 | /* This test includes !hex because 'e' is a valid hex digit | |
1474 | and thus does not indicate a floating point number when | |
1475 | the radix is hex. */ | |
1476 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) | |
1477 | got_dot = got_e = 1; | |
1478 | /* This test does not include !hex, because a '.' always indicates | |
1479 | a decimal floating point number regardless of the radix. */ | |
1480 | else if (!got_dot && *p == '.') | |
1481 | got_dot = 1; | |
1482 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') | |
1483 | && (*p == '-' || *p == '+')) | |
1484 | /* This is the sign of the exponent, not the end of the | |
1485 | number. */ | |
1486 | continue; | |
1487 | /* We will take any letters or digits. parse_number will | |
1488 | complain if past the radix, or if L or U are not final. */ | |
1489 | else if ((*p < '0' || *p > '9') | |
1490 | && ((*p < 'a' || *p > 'z') | |
1491 | && (*p < 'A' || *p > 'Z'))) | |
1492 | break; | |
1493 | } | |
1494 | toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval); | |
1495 | if (toktype == ERROR) | |
1496 | { | |
1497 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
1498 | ||
1499 | memcpy (err_copy, tokstart, p - tokstart); | |
1500 | err_copy[p - tokstart] = 0; | |
1501 | error ("Invalid number \"%s\".", err_copy); | |
1502 | } | |
1503 | lexptr = p; | |
1504 | return toktype; | |
1505 | } | |
1506 | ||
1507 | case '+': | |
1508 | case '-': | |
1509 | case '*': | |
1510 | case '/': | |
1511 | case '%': | |
1512 | case '|': | |
1513 | case '&': | |
1514 | case '^': | |
1515 | case '~': | |
1516 | case '!': | |
1517 | case '@': | |
1518 | case '<': | |
1519 | case '>': | |
1520 | case '[': | |
1521 | case ']': | |
1522 | case '?': | |
1523 | case ':': | |
1524 | case '=': | |
1525 | case '{': | |
1526 | case '}': | |
1527 | symbol: | |
1528 | lexptr++; | |
1529 | return c; | |
1530 | ||
1531 | case '"': | |
1532 | ||
1533 | /* Build the gdb internal form of the input string in tempbuf, | |
1534 | translating any standard C escape forms seen. Note that the | |
1535 | buffer is null byte terminated *only* for the convenience of | |
1536 | debugging gdb itself and printing the buffer contents when | |
1537 | the buffer contains no embedded nulls. Gdb does not depend | |
1538 | upon the buffer being null byte terminated, it uses the length | |
1539 | string instead. This allows gdb to handle C strings (as well | |
1540 | as strings in other languages) with embedded null bytes */ | |
1541 | ||
1542 | tokptr = ++tokstart; | |
1543 | tempbufindex = 0; | |
1544 | ||
1545 | do { | |
234b45d4 KB |
1546 | char *char_start_pos = tokptr; |
1547 | ||
c906108c SS |
1548 | /* Grow the static temp buffer if necessary, including allocating |
1549 | the first one on demand. */ | |
1550 | if (tempbufindex + 1 >= tempbufsize) | |
1551 | { | |
1552 | tempbuf = (char *) realloc (tempbuf, tempbufsize += 64); | |
1553 | } | |
1554 | switch (*tokptr) | |
1555 | { | |
1556 | case '\0': | |
1557 | case '"': | |
1558 | /* Do nothing, loop will terminate. */ | |
1559 | break; | |
1560 | case '\\': | |
1561 | tokptr++; | |
1562 | c = parse_escape (&tokptr); | |
1563 | if (c == -1) | |
1564 | { | |
1565 | continue; | |
1566 | } | |
1567 | tempbuf[tempbufindex++] = c; | |
1568 | break; | |
1569 | default: | |
234b45d4 KB |
1570 | c = *tokptr++; |
1571 | if (! host_char_to_target (c, &c)) | |
1572 | { | |
1573 | int len = tokptr - char_start_pos; | |
1574 | char *copy = alloca (len + 1); | |
1575 | memcpy (copy, char_start_pos, len); | |
1576 | copy[len] = '\0'; | |
1577 | ||
1578 | error ("There is no character corresponding to `%s' " | |
1579 | "in the target character set `%s'.", | |
1580 | copy, target_charset ()); | |
1581 | } | |
1582 | tempbuf[tempbufindex++] = c; | |
c906108c SS |
1583 | break; |
1584 | } | |
1585 | } while ((*tokptr != '"') && (*tokptr != '\0')); | |
1586 | if (*tokptr++ != '"') | |
1587 | { | |
1588 | error ("Unterminated string in expression."); | |
1589 | } | |
1590 | tempbuf[tempbufindex] = '\0'; /* See note above */ | |
1591 | yylval.sval.ptr = tempbuf; | |
1592 | yylval.sval.length = tempbufindex; | |
1593 | lexptr = tokptr; | |
1594 | return (STRING); | |
1595 | } | |
1596 | ||
1597 | if (!(c == '_' || c == '$' | |
1598 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
1599 | /* We must have come across a bad character (e.g. ';'). */ | |
1600 | error ("Invalid character '%c' in expression.", c); | |
1601 | ||
1602 | /* It's a name. See how long it is. */ | |
1603 | namelen = 0; | |
1604 | for (c = tokstart[namelen]; | |
1605 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
1606 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) | |
1607 | { | |
1608 | /* Template parameter lists are part of the name. | |
1609 | FIXME: This mishandles `print $a<4&&$a>3'. */ | |
1610 | ||
1611 | if (c == '<') | |
1612 | { | |
c906108c SS |
1613 | /* Scan ahead to get rest of the template specification. Note |
1614 | that we look ahead only when the '<' adjoins non-whitespace | |
1615 | characters; for comparison expressions, e.g. "a < b > c", | |
1616 | there must be spaces before the '<', etc. */ | |
1617 | ||
1618 | char * p = find_template_name_end (tokstart + namelen); | |
1619 | if (p) | |
1620 | namelen = p - tokstart; | |
1621 | break; | |
c906108c SS |
1622 | } |
1623 | c = tokstart[++namelen]; | |
1624 | } | |
1625 | ||
84f0252a JB |
1626 | /* The token "if" terminates the expression and is NOT removed from |
1627 | the input stream. It doesn't count if it appears in the | |
1628 | expansion of a macro. */ | |
1629 | if (namelen == 2 | |
1630 | && tokstart[0] == 'i' | |
1631 | && tokstart[1] == 'f' | |
1632 | && ! scanning_macro_expansion ()) | |
c906108c SS |
1633 | { |
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | lexptr += namelen; | |
1638 | ||
1639 | tryname: | |
1640 | ||
1641 | /* Catch specific keywords. Should be done with a data structure. */ | |
1642 | switch (namelen) | |
1643 | { | |
1644 | case 8: | |
bf896cb0 | 1645 | if (strncmp (tokstart, "unsigned", 8) == 0) |
c906108c SS |
1646 | return UNSIGNED; |
1647 | if (current_language->la_language == language_cplus | |
bf896cb0 | 1648 | && strncmp (tokstart, "template", 8) == 0) |
c906108c | 1649 | return TEMPLATE; |
bf896cb0 | 1650 | if (strncmp (tokstart, "volatile", 8) == 0) |
c906108c SS |
1651 | return VOLATILE_KEYWORD; |
1652 | break; | |
1653 | case 6: | |
bf896cb0 | 1654 | if (strncmp (tokstart, "struct", 6) == 0) |
c906108c | 1655 | return STRUCT; |
bf896cb0 | 1656 | if (strncmp (tokstart, "signed", 6) == 0) |
c906108c | 1657 | return SIGNED_KEYWORD; |
bf896cb0 | 1658 | if (strncmp (tokstart, "sizeof", 6) == 0) |
c906108c | 1659 | return SIZEOF; |
bf896cb0 | 1660 | if (strncmp (tokstart, "double", 6) == 0) |
c906108c SS |
1661 | return DOUBLE_KEYWORD; |
1662 | break; | |
1663 | case 5: | |
1664 | if (current_language->la_language == language_cplus) | |
1665 | { | |
bf896cb0 | 1666 | if (strncmp (tokstart, "false", 5) == 0) |
c906108c | 1667 | return FALSEKEYWORD; |
bf896cb0 | 1668 | if (strncmp (tokstart, "class", 5) == 0) |
c906108c SS |
1669 | return CLASS; |
1670 | } | |
bf896cb0 | 1671 | if (strncmp (tokstart, "union", 5) == 0) |
c906108c | 1672 | return UNION; |
bf896cb0 | 1673 | if (strncmp (tokstart, "short", 5) == 0) |
c906108c | 1674 | return SHORT; |
bf896cb0 | 1675 | if (strncmp (tokstart, "const", 5) == 0) |
c906108c SS |
1676 | return CONST_KEYWORD; |
1677 | break; | |
1678 | case 4: | |
bf896cb0 | 1679 | if (strncmp (tokstart, "enum", 4) == 0) |
c906108c | 1680 | return ENUM; |
bf896cb0 | 1681 | if (strncmp (tokstart, "long", 4) == 0) |
c906108c SS |
1682 | return LONG; |
1683 | if (current_language->la_language == language_cplus) | |
1684 | { | |
bf896cb0 | 1685 | if (strncmp (tokstart, "true", 4) == 0) |
c906108c | 1686 | return TRUEKEYWORD; |
c906108c SS |
1687 | } |
1688 | break; | |
1689 | case 3: | |
bf896cb0 | 1690 | if (strncmp (tokstart, "int", 3) == 0) |
c906108c SS |
1691 | return INT_KEYWORD; |
1692 | break; | |
1693 | default: | |
1694 | break; | |
1695 | } | |
1696 | ||
1697 | yylval.sval.ptr = tokstart; | |
1698 | yylval.sval.length = namelen; | |
1699 | ||
1700 | if (*tokstart == '$') | |
1701 | { | |
1702 | write_dollar_variable (yylval.sval); | |
1703 | return VARIABLE; | |
1704 | } | |
1705 | ||
1706 | /* Look ahead and see if we can consume more of the input | |
1707 | string to get a reasonable class/namespace spec or a | |
1708 | fully-qualified name. This is a kludge to get around the | |
1709 | HP aCC compiler's generation of symbol names with embedded | |
79c2c32d DC |
1710 | colons for namespace and nested classes. */ |
1711 | ||
1712 | /* NOTE: carlton/2003-09-24: I don't entirely understand the | |
1713 | HP-specific code, either here or in linespec. Having said that, | |
1714 | I suspect that we're actually moving towards their model: we want | |
1715 | symbols whose names are fully qualified, which matches the | |
1716 | description above. */ | |
c906108c SS |
1717 | if (unquoted_expr) |
1718 | { | |
1719 | /* Only do it if not inside single quotes */ | |
1720 | sym_class = parse_nested_classes_for_hpacc (yylval.sval.ptr, yylval.sval.length, | |
1721 | &token_string, &class_prefix, &lexptr); | |
1722 | if (sym_class) | |
1723 | { | |
1724 | /* Replace the current token with the bigger one we found */ | |
1725 | yylval.sval.ptr = token_string; | |
1726 | yylval.sval.length = strlen (token_string); | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | /* Use token-type BLOCKNAME for symbols that happen to be defined as | |
1731 | functions or symtabs. If this is not so, then ... | |
1732 | Use token-type TYPENAME for symbols that happen to be defined | |
1733 | currently as names of types; NAME for other symbols. | |
1734 | The caller is not constrained to care about the distinction. */ | |
1735 | { | |
1736 | char *tmp = copy_name (yylval.sval); | |
1737 | struct symbol *sym; | |
1738 | int is_a_field_of_this = 0; | |
1739 | int hextype; | |
1740 | ||
1741 | sym = lookup_symbol (tmp, expression_context_block, | |
176620f1 | 1742 | VAR_DOMAIN, |
c906108c SS |
1743 | current_language->la_language == language_cplus |
1744 | ? &is_a_field_of_this : (int *) NULL, | |
1745 | (struct symtab **) NULL); | |
1746 | /* Call lookup_symtab, not lookup_partial_symtab, in case there are | |
1747 | no psymtabs (coff, xcoff, or some future change to blow away the | |
1748 | psymtabs once once symbols are read). */ | |
1749 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1750 | { | |
1751 | yylval.ssym.sym = sym; | |
1752 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
1753 | return BLOCKNAME; | |
1754 | } | |
1755 | else if (!sym) | |
1756 | { /* See if it's a file name. */ | |
1757 | struct symtab *symtab; | |
1758 | ||
1759 | symtab = lookup_symtab (tmp); | |
1760 | ||
1761 | if (symtab) | |
1762 | { | |
1763 | yylval.bval = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1764 | return FILENAME; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
1769 | { | |
79c2c32d DC |
1770 | /* NOTE: carlton/2003-09-25: There used to be code here to |
1771 | handle nested types. It didn't work very well. See the | |
1772 | comment before qualified_type for more info. */ | |
c906108c | 1773 | yylval.tsym.type = SYMBOL_TYPE (sym); |
c906108c SS |
1774 | return TYPENAME; |
1775 | } | |
1776 | if ((yylval.tsym.type = lookup_primitive_typename (tmp)) != 0) | |
47663de5 | 1777 | return TYPENAME; |
c906108c SS |
1778 | |
1779 | /* Input names that aren't symbols but ARE valid hex numbers, | |
1780 | when the input radix permits them, can be names or numbers | |
1781 | depending on the parse. Note we support radixes > 16 here. */ | |
1782 | if (!sym && | |
1783 | ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) || | |
1784 | (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10))) | |
1785 | { | |
1786 | YYSTYPE newlval; /* Its value is ignored. */ | |
1787 | hextype = parse_number (tokstart, namelen, 0, &newlval); | |
1788 | if (hextype == INT) | |
1789 | { | |
1790 | yylval.ssym.sym = sym; | |
1791 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
1792 | return NAME_OR_INT; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | /* Any other kind of symbol */ | |
1797 | yylval.ssym.sym = sym; | |
1798 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
1799 | return NAME; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | void | |
1804 | yyerror (msg) | |
1805 | char *msg; | |
1806 | { | |
665132f9 MS |
1807 | if (prev_lexptr) |
1808 | lexptr = prev_lexptr; | |
1809 | ||
c906108c SS |
1810 | error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr); |
1811 | } |