Commit | Line | Data |
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c906108c | 1 | /* YACC parser for C expressions, for GDB. |
197e01b6 | 2 | Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4c38e0a4 | 3 | 1998, 1999, 2000, 2003, 2004, 2006, 2007, 2008, 2009, 2010 |
9b254dd1 | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
5b1ba0e5 | 6 | This file is part of GDB. |
c906108c | 7 | |
5b1ba0e5 NS |
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 3 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
5b1ba0e5 NS |
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. | |
c906108c | 17 | |
5b1ba0e5 NS |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
20 | |
21 | /* Parse a C 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 | %{ | |
39 | ||
40 | #include "defs.h" | |
41 | #include "gdb_string.h" | |
42 | #include <ctype.h> | |
43 | #include "expression.h" | |
44 | #include "value.h" | |
45 | #include "parser-defs.h" | |
46 | #include "language.h" | |
47 | #include "c-lang.h" | |
48 | #include "bfd.h" /* Required by objfiles.h. */ | |
49 | #include "symfile.h" /* Required by objfiles.h. */ | |
50 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */ | |
234b45d4 | 51 | #include "charset.h" |
fe898f56 | 52 | #include "block.h" |
79c2c32d | 53 | #include "cp-support.h" |
27bc4d80 | 54 | #include "dfp.h" |
7c8adf68 TT |
55 | #include "gdb_assert.h" |
56 | #include "macroscope.h" | |
c906108c | 57 | |
3e79cecf UW |
58 | #define parse_type builtin_type (parse_gdbarch) |
59 | ||
c906108c SS |
60 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), |
61 | as well as gratuitiously global symbol names, so we can have multiple | |
62 | yacc generated parsers in gdb. Note that these are only the variables | |
63 | produced by yacc. If other parser generators (bison, byacc, etc) produce | |
64 | additional global names that conflict at link time, then those parser | |
65 | generators need to be fixed instead of adding those names to this list. */ | |
66 | ||
67 | #define yymaxdepth c_maxdepth | |
65d12d83 | 68 | #define yyparse c_parse_internal |
c906108c SS |
69 | #define yylex c_lex |
70 | #define yyerror c_error | |
71 | #define yylval c_lval | |
72 | #define yychar c_char | |
73 | #define yydebug c_debug | |
74 | #define yypact c_pact | |
75 | #define yyr1 c_r1 | |
76 | #define yyr2 c_r2 | |
77 | #define yydef c_def | |
78 | #define yychk c_chk | |
79 | #define yypgo c_pgo | |
80 | #define yyact c_act | |
81 | #define yyexca c_exca | |
82 | #define yyerrflag c_errflag | |
83 | #define yynerrs c_nerrs | |
84 | #define yyps c_ps | |
85 | #define yypv c_pv | |
86 | #define yys c_s | |
87 | #define yy_yys c_yys | |
88 | #define yystate c_state | |
89 | #define yytmp c_tmp | |
90 | #define yyv c_v | |
91 | #define yy_yyv c_yyv | |
92 | #define yyval c_val | |
93 | #define yylloc c_lloc | |
94 | #define yyreds c_reds /* With YYDEBUG defined */ | |
95 | #define yytoks c_toks /* With YYDEBUG defined */ | |
06891d83 JT |
96 | #define yyname c_name /* With YYDEBUG defined */ |
97 | #define yyrule c_rule /* With YYDEBUG defined */ | |
c906108c SS |
98 | #define yylhs c_yylhs |
99 | #define yylen c_yylen | |
100 | #define yydefred c_yydefred | |
101 | #define yydgoto c_yydgoto | |
102 | #define yysindex c_yysindex | |
103 | #define yyrindex c_yyrindex | |
104 | #define yygindex c_yygindex | |
105 | #define yytable c_yytable | |
106 | #define yycheck c_yycheck | |
107 | ||
108 | #ifndef YYDEBUG | |
f461f5cf | 109 | #define YYDEBUG 1 /* Default to yydebug support */ |
c906108c SS |
110 | #endif |
111 | ||
f461f5cf PM |
112 | #define YYFPRINTF parser_fprintf |
113 | ||
a14ed312 | 114 | int yyparse (void); |
c906108c | 115 | |
a14ed312 | 116 | static int yylex (void); |
c906108c | 117 | |
a14ed312 | 118 | void yyerror (char *); |
c906108c SS |
119 | |
120 | %} | |
121 | ||
122 | /* Although the yacc "value" of an expression is not used, | |
123 | since the result is stored in the structure being created, | |
124 | other node types do have values. */ | |
125 | ||
126 | %union | |
127 | { | |
128 | LONGEST lval; | |
129 | struct { | |
130 | LONGEST val; | |
131 | struct type *type; | |
132 | } typed_val_int; | |
133 | struct { | |
134 | DOUBLEST dval; | |
135 | struct type *type; | |
136 | } typed_val_float; | |
27bc4d80 TJB |
137 | struct { |
138 | gdb_byte val[16]; | |
139 | struct type *type; | |
140 | } typed_val_decfloat; | |
c906108c SS |
141 | struct symbol *sym; |
142 | struct type *tval; | |
143 | struct stoken sval; | |
6c7a06a3 | 144 | struct typed_stoken tsval; |
c906108c SS |
145 | struct ttype tsym; |
146 | struct symtoken ssym; | |
147 | int voidval; | |
148 | struct block *bval; | |
149 | enum exp_opcode opcode; | |
150 | struct internalvar *ivar; | |
151 | ||
6c7a06a3 | 152 | struct stoken_vector svec; |
c906108c SS |
153 | struct type **tvec; |
154 | int *ivec; | |
155 | } | |
156 | ||
157 | %{ | |
158 | /* YYSTYPE gets defined by %union */ | |
a14ed312 | 159 | static int parse_number (char *, int, int, YYSTYPE *); |
66c53f2b | 160 | static struct stoken operator_stoken (const char *); |
c906108c SS |
161 | %} |
162 | ||
163 | %type <voidval> exp exp1 type_exp start variable qualified_name lcurly | |
164 | %type <lval> rcurly | |
48e32051 | 165 | %type <tval> type typebase |
c906108c SS |
166 | %type <tvec> nonempty_typelist |
167 | /* %type <bval> block */ | |
168 | ||
169 | /* Fancy type parsing. */ | |
170 | %type <voidval> func_mod direct_abs_decl abs_decl | |
171 | %type <tval> ptype | |
172 | %type <lval> array_mod | |
173 | ||
174 | %token <typed_val_int> INT | |
175 | %token <typed_val_float> FLOAT | |
27bc4d80 | 176 | %token <typed_val_decfloat> DECFLOAT |
c906108c SS |
177 | |
178 | /* Both NAME and TYPENAME tokens represent symbols in the input, | |
179 | and both convey their data as strings. | |
180 | But a TYPENAME is a string that happens to be defined as a typedef | |
181 | or builtin type name (such as int or char) | |
182 | and a NAME is any other symbol. | |
183 | Contexts where this distinction is not important can use the | |
184 | nonterminal "name", which matches either NAME or TYPENAME. */ | |
185 | ||
6c7a06a3 TT |
186 | %token <tsval> STRING |
187 | %token <tsval> CHAR | |
c906108c | 188 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ |
7322dca9 | 189 | %token <ssym> UNKNOWN_CPP_NAME |
65d12d83 | 190 | %token <voidval> COMPLETE |
c906108c | 191 | %token <tsym> TYPENAME |
6c7a06a3 TT |
192 | %type <sval> name |
193 | %type <svec> string_exp | |
c906108c SS |
194 | %type <ssym> name_not_typename |
195 | %type <tsym> typename | |
196 | ||
197 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
198 | but which would parse as a valid number in the current input radix. | |
199 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
200 | turned into a name or into a number. */ | |
201 | ||
202 | %token <ssym> NAME_OR_INT | |
203 | ||
66c53f2b | 204 | %token OPERATOR |
c906108c SS |
205 | %token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON |
206 | %token TEMPLATE | |
207 | %token ERROR | |
66c53f2b KS |
208 | %token NEW DELETE |
209 | %type <sval> operator | |
4e8f195d | 210 | %token REINTERPRET_CAST DYNAMIC_CAST STATIC_CAST CONST_CAST |
c906108c SS |
211 | |
212 | /* Special type cases, put in to allow the parser to distinguish different | |
213 | legal basetypes. */ | |
214 | %token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD DOUBLE_KEYWORD | |
215 | ||
48e32051 | 216 | %token <sval> VARIABLE |
c906108c SS |
217 | |
218 | %token <opcode> ASSIGN_MODIFY | |
219 | ||
220 | /* C++ */ | |
c906108c SS |
221 | %token TRUEKEYWORD |
222 | %token FALSEKEYWORD | |
223 | ||
224 | ||
225 | %left ',' | |
226 | %left ABOVE_COMMA | |
227 | %right '=' ASSIGN_MODIFY | |
228 | %right '?' | |
229 | %left OROR | |
230 | %left ANDAND | |
231 | %left '|' | |
232 | %left '^' | |
233 | %left '&' | |
234 | %left EQUAL NOTEQUAL | |
235 | %left '<' '>' LEQ GEQ | |
236 | %left LSH RSH | |
237 | %left '@' | |
238 | %left '+' '-' | |
239 | %left '*' '/' '%' | |
240 | %right UNARY INCREMENT DECREMENT | |
c1af96a0 | 241 | %right ARROW ARROW_STAR '.' DOT_STAR '[' '(' |
c906108c SS |
242 | %token <ssym> BLOCKNAME |
243 | %token <bval> FILENAME | |
244 | %type <bval> block | |
245 | %left COLONCOLON | |
246 | ||
247 | \f | |
248 | %% | |
249 | ||
250 | start : 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 | ; | |
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); } | |
ef944135 | 269 | ; |
c906108c SS |
270 | |
271 | exp : '&' exp %prec UNARY | |
272 | { write_exp_elt_opcode (UNOP_ADDR); } | |
ef944135 | 273 | ; |
c906108c SS |
274 | |
275 | exp : '-' exp %prec UNARY | |
276 | { write_exp_elt_opcode (UNOP_NEG); } | |
277 | ; | |
278 | ||
36e9969c NS |
279 | exp : '+' exp %prec UNARY |
280 | { write_exp_elt_opcode (UNOP_PLUS); } | |
281 | ; | |
282 | ||
c906108c SS |
283 | exp : '!' exp %prec UNARY |
284 | { write_exp_elt_opcode (UNOP_LOGICAL_NOT); } | |
285 | ; | |
286 | ||
287 | exp : '~' exp %prec UNARY | |
288 | { write_exp_elt_opcode (UNOP_COMPLEMENT); } | |
289 | ; | |
290 | ||
291 | exp : INCREMENT exp %prec UNARY | |
292 | { write_exp_elt_opcode (UNOP_PREINCREMENT); } | |
293 | ; | |
294 | ||
295 | exp : DECREMENT exp %prec UNARY | |
296 | { write_exp_elt_opcode (UNOP_PREDECREMENT); } | |
297 | ; | |
298 | ||
299 | exp : exp INCREMENT %prec UNARY | |
300 | { write_exp_elt_opcode (UNOP_POSTINCREMENT); } | |
301 | ; | |
302 | ||
303 | exp : exp DECREMENT %prec UNARY | |
304 | { write_exp_elt_opcode (UNOP_POSTDECREMENT); } | |
305 | ; | |
306 | ||
307 | exp : SIZEOF exp %prec UNARY | |
308 | { write_exp_elt_opcode (UNOP_SIZEOF); } | |
309 | ; | |
310 | ||
311 | exp : exp ARROW name | |
312 | { write_exp_elt_opcode (STRUCTOP_PTR); | |
313 | write_exp_string ($3); | |
314 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
315 | ; | |
316 | ||
65d12d83 TT |
317 | exp : exp ARROW name COMPLETE |
318 | { mark_struct_expression (); | |
319 | write_exp_elt_opcode (STRUCTOP_PTR); | |
320 | write_exp_string ($3); | |
321 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
322 | ; | |
323 | ||
324 | exp : exp ARROW COMPLETE | |
325 | { struct stoken s; | |
326 | mark_struct_expression (); | |
327 | write_exp_elt_opcode (STRUCTOP_PTR); | |
328 | s.ptr = ""; | |
329 | s.length = 0; | |
330 | write_exp_string (s); | |
331 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
332 | ; | |
333 | ||
c906108c SS |
334 | exp : exp ARROW qualified_name |
335 | { /* exp->type::name becomes exp->*(&type::name) */ | |
336 | /* Note: this doesn't work if name is a | |
337 | static member! FIXME */ | |
338 | write_exp_elt_opcode (UNOP_ADDR); | |
339 | write_exp_elt_opcode (STRUCTOP_MPTR); } | |
340 | ; | |
341 | ||
c1af96a0 | 342 | exp : exp ARROW_STAR exp |
c906108c SS |
343 | { write_exp_elt_opcode (STRUCTOP_MPTR); } |
344 | ; | |
345 | ||
346 | exp : exp '.' name | |
347 | { write_exp_elt_opcode (STRUCTOP_STRUCT); | |
348 | write_exp_string ($3); | |
349 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
350 | ; | |
351 | ||
65d12d83 TT |
352 | exp : exp '.' name COMPLETE |
353 | { mark_struct_expression (); | |
354 | write_exp_elt_opcode (STRUCTOP_STRUCT); | |
355 | write_exp_string ($3); | |
356 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
357 | ; | |
358 | ||
359 | exp : exp '.' COMPLETE | |
360 | { struct stoken s; | |
361 | mark_struct_expression (); | |
362 | write_exp_elt_opcode (STRUCTOP_STRUCT); | |
363 | s.ptr = ""; | |
364 | s.length = 0; | |
365 | write_exp_string (s); | |
366 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
367 | ; | |
368 | ||
c906108c SS |
369 | exp : exp '.' qualified_name |
370 | { /* exp.type::name becomes exp.*(&type::name) */ | |
371 | /* Note: this doesn't work if name is a | |
372 | static member! FIXME */ | |
373 | write_exp_elt_opcode (UNOP_ADDR); | |
374 | write_exp_elt_opcode (STRUCTOP_MEMBER); } | |
375 | ; | |
376 | ||
c1af96a0 | 377 | exp : exp DOT_STAR exp |
c906108c SS |
378 | { write_exp_elt_opcode (STRUCTOP_MEMBER); } |
379 | ; | |
380 | ||
381 | exp : exp '[' exp1 ']' | |
382 | { write_exp_elt_opcode (BINOP_SUBSCRIPT); } | |
383 | ; | |
384 | ||
385 | exp : exp '(' | |
386 | /* This is to save the value of arglist_len | |
387 | being accumulated by an outer function call. */ | |
388 | { start_arglist (); } | |
389 | arglist ')' %prec ARROW | |
390 | { write_exp_elt_opcode (OP_FUNCALL); | |
391 | write_exp_elt_longcst ((LONGEST) end_arglist ()); | |
392 | write_exp_elt_opcode (OP_FUNCALL); } | |
393 | ; | |
394 | ||
7322dca9 SW |
395 | exp : UNKNOWN_CPP_NAME '(' |
396 | { | |
397 | /* This could potentially be a an argument defined | |
398 | lookup function (Koenig). */ | |
399 | write_exp_elt_opcode (OP_ADL_FUNC); | |
400 | write_exp_elt_block (expression_context_block); | |
401 | write_exp_elt_sym (NULL); /* Placeholder. */ | |
402 | write_exp_string ($1.stoken); | |
403 | write_exp_elt_opcode (OP_ADL_FUNC); | |
404 | ||
405 | /* This is to save the value of arglist_len | |
406 | being accumulated by an outer function call. */ | |
407 | ||
408 | start_arglist (); | |
409 | } | |
410 | arglist ')' %prec ARROW | |
411 | { | |
412 | write_exp_elt_opcode (OP_FUNCALL); | |
413 | write_exp_elt_longcst ((LONGEST) end_arglist ()); | |
414 | write_exp_elt_opcode (OP_FUNCALL); | |
415 | } | |
416 | ; | |
417 | ||
c906108c SS |
418 | lcurly : '{' |
419 | { start_arglist (); } | |
420 | ; | |
421 | ||
422 | arglist : | |
423 | ; | |
424 | ||
425 | arglist : exp | |
426 | { arglist_len = 1; } | |
427 | ; | |
428 | ||
429 | arglist : arglist ',' exp %prec ABOVE_COMMA | |
430 | { arglist_len++; } | |
431 | ; | |
432 | ||
072bba3b KS |
433 | exp : exp '(' nonempty_typelist ')' const_or_volatile |
434 | { int i; | |
435 | write_exp_elt_opcode (TYPE_INSTANCE); | |
436 | write_exp_elt_longcst ((LONGEST) $<ivec>3[0]); | |
437 | for (i = 0; i < $<ivec>3[0]; ++i) | |
438 | write_exp_elt_type ($<tvec>3[i + 1]); | |
439 | write_exp_elt_longcst((LONGEST) $<ivec>3[0]); | |
440 | write_exp_elt_opcode (TYPE_INSTANCE); | |
441 | free ($3); | |
442 | } | |
443 | ; | |
444 | ||
c906108c SS |
445 | rcurly : '}' |
446 | { $$ = end_arglist () - 1; } | |
447 | ; | |
448 | exp : lcurly arglist rcurly %prec ARROW | |
449 | { write_exp_elt_opcode (OP_ARRAY); | |
450 | write_exp_elt_longcst ((LONGEST) 0); | |
451 | write_exp_elt_longcst ((LONGEST) $3); | |
452 | write_exp_elt_opcode (OP_ARRAY); } | |
453 | ; | |
454 | ||
455 | exp : lcurly type rcurly exp %prec UNARY | |
456 | { write_exp_elt_opcode (UNOP_MEMVAL); | |
457 | write_exp_elt_type ($2); | |
458 | write_exp_elt_opcode (UNOP_MEMVAL); } | |
459 | ; | |
460 | ||
461 | exp : '(' type ')' exp %prec UNARY | |
462 | { write_exp_elt_opcode (UNOP_CAST); | |
463 | write_exp_elt_type ($2); | |
464 | write_exp_elt_opcode (UNOP_CAST); } | |
465 | ; | |
466 | ||
467 | exp : '(' exp1 ')' | |
468 | { } | |
469 | ; | |
470 | ||
471 | /* Binary operators in order of decreasing precedence. */ | |
472 | ||
473 | exp : exp '@' exp | |
474 | { write_exp_elt_opcode (BINOP_REPEAT); } | |
475 | ; | |
476 | ||
477 | exp : exp '*' exp | |
478 | { write_exp_elt_opcode (BINOP_MUL); } | |
479 | ; | |
480 | ||
481 | exp : exp '/' exp | |
482 | { write_exp_elt_opcode (BINOP_DIV); } | |
483 | ; | |
484 | ||
485 | exp : exp '%' exp | |
486 | { write_exp_elt_opcode (BINOP_REM); } | |
487 | ; | |
488 | ||
489 | exp : exp '+' exp | |
490 | { write_exp_elt_opcode (BINOP_ADD); } | |
491 | ; | |
492 | ||
493 | exp : exp '-' exp | |
494 | { write_exp_elt_opcode (BINOP_SUB); } | |
495 | ; | |
496 | ||
497 | exp : exp LSH exp | |
498 | { write_exp_elt_opcode (BINOP_LSH); } | |
499 | ; | |
500 | ||
501 | exp : exp RSH exp | |
502 | { write_exp_elt_opcode (BINOP_RSH); } | |
503 | ; | |
504 | ||
505 | exp : exp EQUAL exp | |
506 | { write_exp_elt_opcode (BINOP_EQUAL); } | |
507 | ; | |
508 | ||
509 | exp : exp NOTEQUAL exp | |
510 | { write_exp_elt_opcode (BINOP_NOTEQUAL); } | |
511 | ; | |
512 | ||
513 | exp : exp LEQ exp | |
514 | { write_exp_elt_opcode (BINOP_LEQ); } | |
515 | ; | |
516 | ||
517 | exp : exp GEQ exp | |
518 | { write_exp_elt_opcode (BINOP_GEQ); } | |
519 | ; | |
520 | ||
521 | exp : exp '<' exp | |
522 | { write_exp_elt_opcode (BINOP_LESS); } | |
523 | ; | |
524 | ||
525 | exp : exp '>' exp | |
526 | { write_exp_elt_opcode (BINOP_GTR); } | |
527 | ; | |
528 | ||
529 | exp : exp '&' exp | |
530 | { write_exp_elt_opcode (BINOP_BITWISE_AND); } | |
531 | ; | |
532 | ||
533 | exp : exp '^' exp | |
534 | { write_exp_elt_opcode (BINOP_BITWISE_XOR); } | |
535 | ; | |
536 | ||
537 | exp : exp '|' exp | |
538 | { write_exp_elt_opcode (BINOP_BITWISE_IOR); } | |
539 | ; | |
540 | ||
541 | exp : exp ANDAND exp | |
542 | { write_exp_elt_opcode (BINOP_LOGICAL_AND); } | |
543 | ; | |
544 | ||
545 | exp : exp OROR exp | |
546 | { write_exp_elt_opcode (BINOP_LOGICAL_OR); } | |
547 | ; | |
548 | ||
549 | exp : exp '?' exp ':' exp %prec '?' | |
550 | { write_exp_elt_opcode (TERNOP_COND); } | |
551 | ; | |
552 | ||
553 | exp : exp '=' exp | |
554 | { write_exp_elt_opcode (BINOP_ASSIGN); } | |
555 | ; | |
556 | ||
557 | exp : exp ASSIGN_MODIFY exp | |
558 | { write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); | |
559 | write_exp_elt_opcode ($2); | |
560 | write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); } | |
561 | ; | |
562 | ||
563 | exp : INT | |
564 | { write_exp_elt_opcode (OP_LONG); | |
565 | write_exp_elt_type ($1.type); | |
566 | write_exp_elt_longcst ((LONGEST)($1.val)); | |
567 | write_exp_elt_opcode (OP_LONG); } | |
568 | ; | |
569 | ||
6c7a06a3 TT |
570 | exp : CHAR |
571 | { | |
572 | struct stoken_vector vec; | |
573 | vec.len = 1; | |
574 | vec.tokens = &$1; | |
575 | write_exp_string_vector ($1.type, &vec); | |
576 | } | |
577 | ; | |
578 | ||
c906108c SS |
579 | exp : NAME_OR_INT |
580 | { YYSTYPE val; | |
581 | parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val); | |
582 | write_exp_elt_opcode (OP_LONG); | |
583 | write_exp_elt_type (val.typed_val_int.type); | |
584 | write_exp_elt_longcst ((LONGEST)val.typed_val_int.val); | |
585 | write_exp_elt_opcode (OP_LONG); | |
586 | } | |
587 | ; | |
588 | ||
589 | ||
590 | exp : FLOAT | |
591 | { write_exp_elt_opcode (OP_DOUBLE); | |
592 | write_exp_elt_type ($1.type); | |
593 | write_exp_elt_dblcst ($1.dval); | |
594 | write_exp_elt_opcode (OP_DOUBLE); } | |
595 | ; | |
596 | ||
27bc4d80 TJB |
597 | exp : DECFLOAT |
598 | { write_exp_elt_opcode (OP_DECFLOAT); | |
599 | write_exp_elt_type ($1.type); | |
600 | write_exp_elt_decfloatcst ($1.val); | |
601 | write_exp_elt_opcode (OP_DECFLOAT); } | |
602 | ; | |
603 | ||
c906108c SS |
604 | exp : variable |
605 | ; | |
606 | ||
607 | exp : VARIABLE | |
48e32051 TT |
608 | { |
609 | write_dollar_variable ($1); | |
610 | } | |
c906108c SS |
611 | ; |
612 | ||
613 | exp : SIZEOF '(' type ')' %prec UNARY | |
614 | { write_exp_elt_opcode (OP_LONG); | |
3e79cecf | 615 | write_exp_elt_type (parse_type->builtin_int); |
c906108c SS |
616 | CHECK_TYPEDEF ($3); |
617 | write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3)); | |
618 | write_exp_elt_opcode (OP_LONG); } | |
619 | ; | |
620 | ||
4e8f195d TT |
621 | exp : REINTERPRET_CAST '<' type '>' '(' exp ')' %prec UNARY |
622 | { write_exp_elt_opcode (UNOP_REINTERPRET_CAST); | |
623 | write_exp_elt_type ($3); | |
624 | write_exp_elt_opcode (UNOP_REINTERPRET_CAST); } | |
625 | ; | |
626 | ||
627 | exp : STATIC_CAST '<' type '>' '(' exp ')' %prec UNARY | |
628 | { write_exp_elt_opcode (UNOP_CAST); | |
629 | write_exp_elt_type ($3); | |
630 | write_exp_elt_opcode (UNOP_CAST); } | |
631 | ; | |
632 | ||
633 | exp : DYNAMIC_CAST '<' type '>' '(' exp ')' %prec UNARY | |
634 | { write_exp_elt_opcode (UNOP_DYNAMIC_CAST); | |
635 | write_exp_elt_type ($3); | |
636 | write_exp_elt_opcode (UNOP_DYNAMIC_CAST); } | |
637 | ; | |
638 | ||
639 | exp : CONST_CAST '<' type '>' '(' exp ')' %prec UNARY | |
640 | { /* We could do more error checking here, but | |
641 | it doesn't seem worthwhile. */ | |
642 | write_exp_elt_opcode (UNOP_CAST); | |
643 | write_exp_elt_type ($3); | |
644 | write_exp_elt_opcode (UNOP_CAST); } | |
645 | ; | |
646 | ||
c209f847 TT |
647 | string_exp: |
648 | STRING | |
649 | { | |
650 | /* We copy the string here, and not in the | |
651 | lexer, to guarantee that we do not leak a | |
652 | string. Note that we follow the | |
653 | NUL-termination convention of the | |
654 | lexer. */ | |
6c7a06a3 TT |
655 | struct typed_stoken *vec = XNEW (struct typed_stoken); |
656 | $$.len = 1; | |
657 | $$.tokens = vec; | |
658 | ||
659 | vec->type = $1.type; | |
660 | vec->length = $1.length; | |
661 | vec->ptr = malloc ($1.length + 1); | |
662 | memcpy (vec->ptr, $1.ptr, $1.length + 1); | |
c209f847 TT |
663 | } |
664 | ||
665 | | string_exp STRING | |
666 | { | |
667 | /* Note that we NUL-terminate here, but just | |
668 | for convenience. */ | |
6c7a06a3 TT |
669 | char *p; |
670 | ++$$.len; | |
671 | $$.tokens = realloc ($$.tokens, | |
672 | $$.len * sizeof (struct typed_stoken)); | |
673 | ||
674 | p = malloc ($2.length + 1); | |
675 | memcpy (p, $2.ptr, $2.length + 1); | |
676 | ||
677 | $$.tokens[$$.len - 1].type = $2.type; | |
678 | $$.tokens[$$.len - 1].length = $2.length; | |
679 | $$.tokens[$$.len - 1].ptr = p; | |
c209f847 TT |
680 | } |
681 | ; | |
682 | ||
683 | exp : string_exp | |
6c7a06a3 TT |
684 | { |
685 | int i; | |
686 | enum c_string_type type = C_STRING; | |
687 | ||
688 | for (i = 0; i < $1.len; ++i) | |
c906108c | 689 | { |
6c7a06a3 TT |
690 | switch ($1.tokens[i].type) |
691 | { | |
692 | case C_STRING: | |
693 | break; | |
694 | case C_WIDE_STRING: | |
695 | case C_STRING_16: | |
696 | case C_STRING_32: | |
697 | if (type != C_STRING | |
698 | && type != $1.tokens[i].type) | |
699 | error ("Undefined string concatenation."); | |
700 | type = $1.tokens[i].type; | |
701 | break; | |
702 | default: | |
703 | /* internal error */ | |
704 | internal_error (__FILE__, __LINE__, | |
705 | "unrecognized type in string concatenation"); | |
706 | } | |
c906108c | 707 | } |
6c7a06a3 TT |
708 | |
709 | write_exp_string_vector (type, &$1); | |
710 | for (i = 0; i < $1.len; ++i) | |
711 | free ($1.tokens[i].ptr); | |
712 | free ($1.tokens); | |
c209f847 | 713 | } |
c906108c SS |
714 | ; |
715 | ||
716 | /* C++. */ | |
c906108c SS |
717 | exp : TRUEKEYWORD |
718 | { write_exp_elt_opcode (OP_LONG); | |
3e79cecf | 719 | write_exp_elt_type (parse_type->builtin_bool); |
c906108c SS |
720 | write_exp_elt_longcst ((LONGEST) 1); |
721 | write_exp_elt_opcode (OP_LONG); } | |
722 | ; | |
723 | ||
724 | exp : FALSEKEYWORD | |
725 | { write_exp_elt_opcode (OP_LONG); | |
3e79cecf | 726 | write_exp_elt_type (parse_type->builtin_bool); |
c906108c SS |
727 | write_exp_elt_longcst ((LONGEST) 0); |
728 | write_exp_elt_opcode (OP_LONG); } | |
729 | ; | |
730 | ||
731 | /* end of C++. */ | |
732 | ||
733 | block : BLOCKNAME | |
734 | { | |
735 | if ($1.sym) | |
736 | $$ = SYMBOL_BLOCK_VALUE ($1.sym); | |
737 | else | |
738 | error ("No file or function \"%s\".", | |
739 | copy_name ($1.stoken)); | |
740 | } | |
741 | | FILENAME | |
742 | { | |
743 | $$ = $1; | |
744 | } | |
745 | ; | |
746 | ||
747 | block : block COLONCOLON name | |
748 | { struct symbol *tem | |
749 | = lookup_symbol (copy_name ($3), $1, | |
2570f2b7 | 750 | VAR_DOMAIN, (int *) NULL); |
c906108c SS |
751 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) |
752 | error ("No function \"%s\" in specified context.", | |
753 | copy_name ($3)); | |
754 | $$ = SYMBOL_BLOCK_VALUE (tem); } | |
755 | ; | |
756 | ||
757 | variable: block COLONCOLON name | |
758 | { struct symbol *sym; | |
759 | sym = lookup_symbol (copy_name ($3), $1, | |
2570f2b7 | 760 | VAR_DOMAIN, (int *) NULL); |
c906108c SS |
761 | if (sym == 0) |
762 | error ("No symbol \"%s\" in specified context.", | |
763 | copy_name ($3)); | |
764 | ||
765 | write_exp_elt_opcode (OP_VAR_VALUE); | |
766 | /* block_found is set by lookup_symbol. */ | |
767 | write_exp_elt_block (block_found); | |
768 | write_exp_elt_sym (sym); | |
769 | write_exp_elt_opcode (OP_VAR_VALUE); } | |
770 | ; | |
771 | ||
48e32051 | 772 | qualified_name: TYPENAME COLONCOLON name |
c906108c | 773 | { |
48e32051 | 774 | struct type *type = $1.type; |
e8269d5f | 775 | CHECK_TYPEDEF (type); |
c906108c | 776 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
79c2c32d DC |
777 | && TYPE_CODE (type) != TYPE_CODE_UNION |
778 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
c906108c SS |
779 | error ("`%s' is not defined as an aggregate type.", |
780 | TYPE_NAME (type)); | |
781 | ||
782 | write_exp_elt_opcode (OP_SCOPE); | |
783 | write_exp_elt_type (type); | |
784 | write_exp_string ($3); | |
785 | write_exp_elt_opcode (OP_SCOPE); | |
786 | } | |
48e32051 | 787 | | TYPENAME COLONCOLON '~' name |
c906108c | 788 | { |
48e32051 | 789 | struct type *type = $1.type; |
c906108c | 790 | struct stoken tmp_token; |
e8269d5f | 791 | CHECK_TYPEDEF (type); |
c906108c | 792 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
79c2c32d DC |
793 | && TYPE_CODE (type) != TYPE_CODE_UNION |
794 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
c906108c SS |
795 | error ("`%s' is not defined as an aggregate type.", |
796 | TYPE_NAME (type)); | |
797 | ||
798 | tmp_token.ptr = (char*) alloca ($4.length + 2); | |
799 | tmp_token.length = $4.length + 1; | |
800 | tmp_token.ptr[0] = '~'; | |
801 | memcpy (tmp_token.ptr+1, $4.ptr, $4.length); | |
802 | tmp_token.ptr[tmp_token.length] = 0; | |
803 | ||
804 | /* Check for valid destructor name. */ | |
805 | destructor_name_p (tmp_token.ptr, type); | |
806 | write_exp_elt_opcode (OP_SCOPE); | |
807 | write_exp_elt_type (type); | |
808 | write_exp_string (tmp_token); | |
809 | write_exp_elt_opcode (OP_SCOPE); | |
810 | } | |
48e32051 TT |
811 | | TYPENAME COLONCOLON name COLONCOLON name |
812 | { | |
813 | char *copy = copy_name ($3); | |
814 | error (_("No type \"%s\" within class " | |
815 | "or namespace \"%s\"."), | |
816 | copy, TYPE_NAME ($1.type)); | |
817 | } | |
c906108c SS |
818 | ; |
819 | ||
820 | variable: qualified_name | |
48e32051 | 821 | | COLONCOLON name_not_typename |
c906108c | 822 | { |
48e32051 | 823 | char *name = copy_name ($2.stoken); |
c906108c SS |
824 | struct symbol *sym; |
825 | struct minimal_symbol *msymbol; | |
826 | ||
827 | sym = | |
828 | lookup_symbol (name, (const struct block *) NULL, | |
2570f2b7 | 829 | VAR_DOMAIN, (int *) NULL); |
c906108c SS |
830 | if (sym) |
831 | { | |
832 | write_exp_elt_opcode (OP_VAR_VALUE); | |
833 | write_exp_elt_block (NULL); | |
834 | write_exp_elt_sym (sym); | |
835 | write_exp_elt_opcode (OP_VAR_VALUE); | |
836 | break; | |
837 | } | |
838 | ||
839 | msymbol = lookup_minimal_symbol (name, NULL, NULL); | |
840 | if (msymbol != NULL) | |
c841afd5 UW |
841 | write_exp_msymbol (msymbol); |
842 | else if (!have_full_symbols () && !have_partial_symbols ()) | |
843 | error ("No symbol table is loaded. Use the \"file\" command."); | |
c906108c | 844 | else |
c841afd5 | 845 | error ("No symbol \"%s\" in current context.", name); |
c906108c SS |
846 | } |
847 | ; | |
848 | ||
849 | variable: name_not_typename | |
850 | { struct symbol *sym = $1.sym; | |
851 | ||
852 | if (sym) | |
853 | { | |
854 | if (symbol_read_needs_frame (sym)) | |
855 | { | |
5aafa1cc PM |
856 | if (innermost_block == 0 |
857 | || contained_in (block_found, | |
858 | innermost_block)) | |
c906108c SS |
859 | innermost_block = block_found; |
860 | } | |
861 | ||
862 | write_exp_elt_opcode (OP_VAR_VALUE); | |
863 | /* We want to use the selected frame, not | |
864 | another more inner frame which happens to | |
865 | be in the same block. */ | |
866 | write_exp_elt_block (NULL); | |
867 | write_exp_elt_sym (sym); | |
868 | write_exp_elt_opcode (OP_VAR_VALUE); | |
869 | } | |
870 | else if ($1.is_a_field_of_this) | |
871 | { | |
872 | /* C++: it hangs off of `this'. Must | |
873 | not inadvertently convert from a method call | |
874 | to data ref. */ | |
5aafa1cc PM |
875 | if (innermost_block == 0 |
876 | || contained_in (block_found, | |
877 | innermost_block)) | |
c906108c SS |
878 | innermost_block = block_found; |
879 | write_exp_elt_opcode (OP_THIS); | |
880 | write_exp_elt_opcode (OP_THIS); | |
881 | write_exp_elt_opcode (STRUCTOP_PTR); | |
882 | write_exp_string ($1.stoken); | |
883 | write_exp_elt_opcode (STRUCTOP_PTR); | |
884 | } | |
885 | else | |
886 | { | |
887 | struct minimal_symbol *msymbol; | |
710122da | 888 | char *arg = copy_name ($1.stoken); |
c906108c SS |
889 | |
890 | msymbol = | |
891 | lookup_minimal_symbol (arg, NULL, NULL); | |
892 | if (msymbol != NULL) | |
c841afd5 | 893 | write_exp_msymbol (msymbol); |
c906108c SS |
894 | else if (!have_full_symbols () && !have_partial_symbols ()) |
895 | error ("No symbol table is loaded. Use the \"file\" command."); | |
896 | else | |
897 | error ("No symbol \"%s\" in current context.", | |
898 | copy_name ($1.stoken)); | |
899 | } | |
900 | } | |
901 | ; | |
902 | ||
47663de5 MS |
903 | space_identifier : '@' NAME |
904 | { push_type_address_space (copy_name ($2.stoken)); | |
905 | push_type (tp_space_identifier); | |
906 | } | |
907 | ; | |
c906108c | 908 | |
47663de5 MS |
909 | const_or_volatile: const_or_volatile_noopt |
910 | | | |
c906108c | 911 | ; |
47663de5 MS |
912 | |
913 | cv_with_space_id : const_or_volatile space_identifier const_or_volatile | |
56e2d25a | 914 | ; |
47663de5 MS |
915 | |
916 | const_or_volatile_or_space_identifier_noopt: cv_with_space_id | |
917 | | const_or_volatile_noopt | |
56e2d25a | 918 | ; |
47663de5 MS |
919 | |
920 | const_or_volatile_or_space_identifier: | |
921 | const_or_volatile_or_space_identifier_noopt | |
922 | | | |
56e2d25a | 923 | ; |
47663de5 | 924 | |
c906108c SS |
925 | abs_decl: '*' |
926 | { push_type (tp_pointer); $$ = 0; } | |
927 | | '*' abs_decl | |
928 | { push_type (tp_pointer); $$ = $2; } | |
929 | | '&' | |
930 | { push_type (tp_reference); $$ = 0; } | |
931 | | '&' abs_decl | |
932 | { push_type (tp_reference); $$ = $2; } | |
933 | | direct_abs_decl | |
934 | ; | |
935 | ||
936 | direct_abs_decl: '(' abs_decl ')' | |
937 | { $$ = $2; } | |
938 | | direct_abs_decl array_mod | |
939 | { | |
940 | push_type_int ($2); | |
941 | push_type (tp_array); | |
942 | } | |
943 | | array_mod | |
944 | { | |
945 | push_type_int ($1); | |
946 | push_type (tp_array); | |
947 | $$ = 0; | |
948 | } | |
949 | ||
950 | | direct_abs_decl func_mod | |
951 | { push_type (tp_function); } | |
952 | | func_mod | |
953 | { push_type (tp_function); } | |
954 | ; | |
955 | ||
956 | array_mod: '[' ']' | |
957 | { $$ = -1; } | |
958 | | '[' INT ']' | |
959 | { $$ = $2.val; } | |
960 | ; | |
961 | ||
962 | func_mod: '(' ')' | |
963 | { $$ = 0; } | |
964 | | '(' nonempty_typelist ')' | |
8dbb1c65 | 965 | { free ($2); $$ = 0; } |
c906108c SS |
966 | ; |
967 | ||
a22229c4 | 968 | /* We used to try to recognize pointer to member types here, but |
c906108c SS |
969 | that didn't work (shift/reduce conflicts meant that these rules never |
970 | got executed). The problem is that | |
971 | int (foo::bar::baz::bizzle) | |
972 | is a function type but | |
973 | int (foo::bar::baz::bizzle::*) | |
974 | is a pointer to member type. Stroustrup loses again! */ | |
975 | ||
976 | type : ptype | |
c906108c SS |
977 | ; |
978 | ||
979 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ | |
980 | : TYPENAME | |
981 | { $$ = $1.type; } | |
982 | | INT_KEYWORD | |
3e79cecf | 983 | { $$ = parse_type->builtin_int; } |
c906108c | 984 | | LONG |
3e79cecf | 985 | { $$ = parse_type->builtin_long; } |
c906108c | 986 | | SHORT |
3e79cecf | 987 | { $$ = parse_type->builtin_short; } |
c906108c | 988 | | LONG INT_KEYWORD |
3e79cecf | 989 | { $$ = parse_type->builtin_long; } |
b2c4da81 | 990 | | LONG SIGNED_KEYWORD INT_KEYWORD |
3e79cecf | 991 | { $$ = parse_type->builtin_long; } |
b2c4da81 | 992 | | LONG SIGNED_KEYWORD |
3e79cecf | 993 | { $$ = parse_type->builtin_long; } |
b2c4da81 | 994 | | SIGNED_KEYWORD LONG INT_KEYWORD |
3e79cecf | 995 | { $$ = parse_type->builtin_long; } |
c906108c | 996 | | UNSIGNED LONG INT_KEYWORD |
3e79cecf | 997 | { $$ = parse_type->builtin_unsigned_long; } |
b2c4da81 | 998 | | LONG UNSIGNED INT_KEYWORD |
3e79cecf | 999 | { $$ = parse_type->builtin_unsigned_long; } |
b2c4da81 | 1000 | | LONG UNSIGNED |
3e79cecf | 1001 | { $$ = parse_type->builtin_unsigned_long; } |
c906108c | 1002 | | LONG LONG |
3e79cecf | 1003 | { $$ = parse_type->builtin_long_long; } |
c906108c | 1004 | | LONG LONG INT_KEYWORD |
3e79cecf | 1005 | { $$ = parse_type->builtin_long_long; } |
b2c4da81 | 1006 | | LONG LONG SIGNED_KEYWORD INT_KEYWORD |
3e79cecf | 1007 | { $$ = parse_type->builtin_long_long; } |
b2c4da81 | 1008 | | LONG LONG SIGNED_KEYWORD |
3e79cecf | 1009 | { $$ = parse_type->builtin_long_long; } |
b2c4da81 | 1010 | | SIGNED_KEYWORD LONG LONG |
3e79cecf | 1011 | { $$ = parse_type->builtin_long_long; } |
55baeb84 | 1012 | | SIGNED_KEYWORD LONG LONG INT_KEYWORD |
3e79cecf | 1013 | { $$ = parse_type->builtin_long_long; } |
c906108c | 1014 | | UNSIGNED LONG LONG |
3e79cecf | 1015 | { $$ = parse_type->builtin_unsigned_long_long; } |
c906108c | 1016 | | UNSIGNED LONG LONG INT_KEYWORD |
3e79cecf | 1017 | { $$ = parse_type->builtin_unsigned_long_long; } |
b2c4da81 | 1018 | | LONG LONG UNSIGNED |
3e79cecf | 1019 | { $$ = parse_type->builtin_unsigned_long_long; } |
b2c4da81 | 1020 | | LONG LONG UNSIGNED INT_KEYWORD |
3e79cecf | 1021 | { $$ = parse_type->builtin_unsigned_long_long; } |
c906108c | 1022 | | SHORT INT_KEYWORD |
3e79cecf | 1023 | { $$ = parse_type->builtin_short; } |
b2c4da81 | 1024 | | SHORT SIGNED_KEYWORD INT_KEYWORD |
3e79cecf | 1025 | { $$ = parse_type->builtin_short; } |
b2c4da81 | 1026 | | SHORT SIGNED_KEYWORD |
3e79cecf | 1027 | { $$ = parse_type->builtin_short; } |
c906108c | 1028 | | UNSIGNED SHORT INT_KEYWORD |
3e79cecf | 1029 | { $$ = parse_type->builtin_unsigned_short; } |
b2c4da81 | 1030 | | SHORT UNSIGNED |
3e79cecf | 1031 | { $$ = parse_type->builtin_unsigned_short; } |
b2c4da81 | 1032 | | SHORT UNSIGNED INT_KEYWORD |
3e79cecf | 1033 | { $$ = parse_type->builtin_unsigned_short; } |
c906108c | 1034 | | DOUBLE_KEYWORD |
3e79cecf | 1035 | { $$ = parse_type->builtin_double; } |
c906108c | 1036 | | LONG DOUBLE_KEYWORD |
3e79cecf | 1037 | { $$ = parse_type->builtin_long_double; } |
c906108c SS |
1038 | | STRUCT name |
1039 | { $$ = lookup_struct (copy_name ($2), | |
1040 | expression_context_block); } | |
1041 | | CLASS name | |
1042 | { $$ = lookup_struct (copy_name ($2), | |
1043 | expression_context_block); } | |
1044 | | UNION name | |
1045 | { $$ = lookup_union (copy_name ($2), | |
1046 | expression_context_block); } | |
1047 | | ENUM name | |
1048 | { $$ = lookup_enum (copy_name ($2), | |
1049 | expression_context_block); } | |
1050 | | UNSIGNED typename | |
e6c014f2 UW |
1051 | { $$ = lookup_unsigned_typename (parse_language, |
1052 | parse_gdbarch, | |
1053 | TYPE_NAME($2.type)); } | |
c906108c | 1054 | | UNSIGNED |
3e79cecf | 1055 | { $$ = parse_type->builtin_unsigned_int; } |
c906108c | 1056 | | SIGNED_KEYWORD typename |
e6c014f2 UW |
1057 | { $$ = lookup_signed_typename (parse_language, |
1058 | parse_gdbarch, | |
1059 | TYPE_NAME($2.type)); } | |
c906108c | 1060 | | SIGNED_KEYWORD |
3e79cecf | 1061 | { $$ = parse_type->builtin_int; } |
c906108c SS |
1062 | /* It appears that this rule for templates is never |
1063 | reduced; template recognition happens by lookahead | |
1064 | in the token processing code in yylex. */ | |
1065 | | TEMPLATE name '<' type '>' | |
1066 | { $$ = lookup_template_type(copy_name($2), $4, | |
1067 | expression_context_block); | |
1068 | } | |
47663de5 MS |
1069 | | const_or_volatile_or_space_identifier_noopt typebase |
1070 | { $$ = follow_types ($2); } | |
1071 | | typebase const_or_volatile_or_space_identifier_noopt | |
1072 | { $$ = follow_types ($1); } | |
c906108c SS |
1073 | ; |
1074 | ||
1075 | typename: TYPENAME | |
1076 | | INT_KEYWORD | |
1077 | { | |
1078 | $$.stoken.ptr = "int"; | |
1079 | $$.stoken.length = 3; | |
3e79cecf | 1080 | $$.type = parse_type->builtin_int; |
c906108c SS |
1081 | } |
1082 | | LONG | |
1083 | { | |
1084 | $$.stoken.ptr = "long"; | |
1085 | $$.stoken.length = 4; | |
3e79cecf | 1086 | $$.type = parse_type->builtin_long; |
c906108c SS |
1087 | } |
1088 | | SHORT | |
1089 | { | |
1090 | $$.stoken.ptr = "short"; | |
1091 | $$.stoken.length = 5; | |
3e79cecf | 1092 | $$.type = parse_type->builtin_short; |
c906108c SS |
1093 | } |
1094 | ; | |
1095 | ||
1096 | nonempty_typelist | |
1097 | : type | |
1098 | { $$ = (struct type **) malloc (sizeof (struct type *) * 2); | |
1099 | $<ivec>$[0] = 1; /* Number of types in vector */ | |
1100 | $$[1] = $1; | |
1101 | } | |
1102 | | nonempty_typelist ',' type | |
1103 | { int len = sizeof (struct type *) * (++($<ivec>1[0]) + 1); | |
1104 | $$ = (struct type **) realloc ((char *) $1, len); | |
1105 | $$[$<ivec>$[0]] = $3; | |
1106 | } | |
1107 | ; | |
1108 | ||
47663de5 MS |
1109 | ptype : typebase |
1110 | | ptype const_or_volatile_or_space_identifier abs_decl const_or_volatile_or_space_identifier | |
1111 | { $$ = follow_types ($1); } | |
1112 | ; | |
1113 | ||
1114 | const_and_volatile: CONST_KEYWORD VOLATILE_KEYWORD | |
1115 | | VOLATILE_KEYWORD CONST_KEYWORD | |
1116 | ; | |
1117 | ||
1118 | const_or_volatile_noopt: const_and_volatile | |
1119 | { push_type (tp_const); | |
1120 | push_type (tp_volatile); | |
1121 | } | |
1122 | | CONST_KEYWORD | |
1123 | { push_type (tp_const); } | |
1124 | | VOLATILE_KEYWORD | |
1125 | { push_type (tp_volatile); } | |
1126 | ; | |
1127 | ||
66c53f2b KS |
1128 | operator: OPERATOR NEW |
1129 | { $$ = operator_stoken (" new"); } | |
1130 | | OPERATOR DELETE | |
1131 | { $$ = operator_stoken (" delete"); } | |
1132 | | OPERATOR NEW '[' ']' | |
1133 | { $$ = operator_stoken (" new[]"); } | |
1134 | | OPERATOR DELETE '[' ']' | |
1135 | { $$ = operator_stoken (" delete[]"); } | |
1136 | | OPERATOR '+' | |
1137 | { $$ = operator_stoken ("+"); } | |
1138 | | OPERATOR '-' | |
1139 | { $$ = operator_stoken ("-"); } | |
1140 | | OPERATOR '*' | |
1141 | { $$ = operator_stoken ("*"); } | |
1142 | | OPERATOR '/' | |
1143 | { $$ = operator_stoken ("/"); } | |
1144 | | OPERATOR '%' | |
1145 | { $$ = operator_stoken ("%"); } | |
1146 | | OPERATOR '^' | |
1147 | { $$ = operator_stoken ("^"); } | |
1148 | | OPERATOR '&' | |
1149 | { $$ = operator_stoken ("&"); } | |
1150 | | OPERATOR '|' | |
1151 | { $$ = operator_stoken ("|"); } | |
1152 | | OPERATOR '~' | |
1153 | { $$ = operator_stoken ("~"); } | |
1154 | | OPERATOR '!' | |
1155 | { $$ = operator_stoken ("!"); } | |
1156 | | OPERATOR '=' | |
1157 | { $$ = operator_stoken ("="); } | |
1158 | | OPERATOR '<' | |
1159 | { $$ = operator_stoken ("<"); } | |
1160 | | OPERATOR '>' | |
1161 | { $$ = operator_stoken (">"); } | |
1162 | | OPERATOR ASSIGN_MODIFY | |
1163 | { const char *op = "unknown"; | |
1164 | switch ($2) | |
1165 | { | |
1166 | case BINOP_RSH: | |
1167 | op = ">>="; | |
1168 | break; | |
1169 | case BINOP_LSH: | |
1170 | op = "<<="; | |
1171 | break; | |
1172 | case BINOP_ADD: | |
1173 | op = "+="; | |
1174 | break; | |
1175 | case BINOP_SUB: | |
1176 | op = "-="; | |
1177 | break; | |
1178 | case BINOP_MUL: | |
1179 | op = "*="; | |
1180 | break; | |
1181 | case BINOP_DIV: | |
1182 | op = "/="; | |
1183 | break; | |
1184 | case BINOP_REM: | |
1185 | op = "%="; | |
1186 | break; | |
1187 | case BINOP_BITWISE_IOR: | |
1188 | op = "|="; | |
1189 | break; | |
1190 | case BINOP_BITWISE_AND: | |
1191 | op = "&="; | |
1192 | break; | |
1193 | case BINOP_BITWISE_XOR: | |
1194 | op = "^="; | |
1195 | break; | |
1196 | default: | |
1197 | break; | |
1198 | } | |
1199 | ||
1200 | $$ = operator_stoken (op); | |
1201 | } | |
1202 | | OPERATOR LSH | |
1203 | { $$ = operator_stoken ("<<"); } | |
1204 | | OPERATOR RSH | |
1205 | { $$ = operator_stoken (">>"); } | |
1206 | | OPERATOR EQUAL | |
1207 | { $$ = operator_stoken ("=="); } | |
1208 | | OPERATOR NOTEQUAL | |
1209 | { $$ = operator_stoken ("!="); } | |
1210 | | OPERATOR LEQ | |
1211 | { $$ = operator_stoken ("<="); } | |
1212 | | OPERATOR GEQ | |
1213 | { $$ = operator_stoken (">="); } | |
1214 | | OPERATOR ANDAND | |
1215 | { $$ = operator_stoken ("&&"); } | |
1216 | | OPERATOR OROR | |
1217 | { $$ = operator_stoken ("||"); } | |
1218 | | OPERATOR INCREMENT | |
1219 | { $$ = operator_stoken ("++"); } | |
1220 | | OPERATOR DECREMENT | |
1221 | { $$ = operator_stoken ("--"); } | |
1222 | | OPERATOR ',' | |
1223 | { $$ = operator_stoken (","); } | |
1224 | | OPERATOR ARROW_STAR | |
1225 | { $$ = operator_stoken ("->*"); } | |
1226 | | OPERATOR ARROW | |
1227 | { $$ = operator_stoken ("->"); } | |
1228 | | OPERATOR '(' ')' | |
1229 | { $$ = operator_stoken ("()"); } | |
1230 | | OPERATOR '[' ']' | |
1231 | { $$ = operator_stoken ("[]"); } | |
1232 | | OPERATOR ptype | |
1233 | { char *name; | |
1234 | long length; | |
1235 | struct ui_file *buf = mem_fileopen (); | |
1236 | ||
1237 | c_print_type ($2, NULL, buf, -1, 0); | |
1238 | name = ui_file_xstrdup (buf, &length); | |
1239 | ui_file_delete (buf); | |
1240 | $$ = operator_stoken (name); | |
1241 | free (name); | |
1242 | } | |
1243 | ; | |
1244 | ||
1245 | ||
1246 | ||
c906108c SS |
1247 | name : NAME { $$ = $1.stoken; } |
1248 | | BLOCKNAME { $$ = $1.stoken; } | |
1249 | | TYPENAME { $$ = $1.stoken; } | |
1250 | | NAME_OR_INT { $$ = $1.stoken; } | |
7322dca9 | 1251 | | UNKNOWN_CPP_NAME { $$ = $1.stoken; } |
66c53f2b | 1252 | | operator { $$ = $1; } |
c906108c SS |
1253 | ; |
1254 | ||
1255 | name_not_typename : NAME | |
1256 | | BLOCKNAME | |
1257 | /* These would be useful if name_not_typename was useful, but it is just | |
1258 | a fake for "variable", so these cause reduce/reduce conflicts because | |
1259 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, | |
1260 | =exp) or just an exp. If name_not_typename was ever used in an lvalue | |
1261 | context where only a name could occur, this might be useful. | |
1262 | | NAME_OR_INT | |
1263 | */ | |
6e31430b TT |
1264 | | operator |
1265 | { | |
1266 | $$.stoken = $1; | |
1267 | $$.sym = lookup_symbol ($1.ptr, | |
1268 | expression_context_block, | |
1269 | VAR_DOMAIN, | |
1270 | &$$.is_a_field_of_this); | |
1271 | } | |
7322dca9 | 1272 | | UNKNOWN_CPP_NAME |
c906108c SS |
1273 | ; |
1274 | ||
1275 | %% | |
1276 | ||
66c53f2b KS |
1277 | /* Returns a stoken of the operator name given by OP (which does not |
1278 | include the string "operator"). */ | |
1279 | static struct stoken | |
1280 | operator_stoken (const char *op) | |
1281 | { | |
1282 | static const char *operator_string = "operator"; | |
1283 | struct stoken st = { NULL, 0 }; | |
1284 | st.length = strlen (operator_string) + strlen (op); | |
1285 | st.ptr = malloc (st.length + 1); | |
1286 | strcpy (st.ptr, operator_string); | |
1287 | strcat (st.ptr, op); | |
1288 | ||
1289 | /* The toplevel (c_parse) will free the memory allocated here. */ | |
1290 | make_cleanup (free, st.ptr); | |
1291 | return st; | |
1292 | }; | |
1293 | ||
c906108c SS |
1294 | /* Take care of parsing a number (anything that starts with a digit). |
1295 | Set yylval and return the token type; update lexptr. | |
1296 | LEN is the number of characters in it. */ | |
1297 | ||
1298 | /*** Needs some error checking for the float case ***/ | |
1299 | ||
1300 | static int | |
68c1b02d | 1301 | parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere) |
c906108c SS |
1302 | { |
1303 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values | |
1304 | here, and we do kind of silly things like cast to unsigned. */ | |
710122da DC |
1305 | LONGEST n = 0; |
1306 | LONGEST prevn = 0; | |
c906108c SS |
1307 | ULONGEST un; |
1308 | ||
710122da DC |
1309 | int i = 0; |
1310 | int c; | |
1311 | int base = input_radix; | |
c906108c SS |
1312 | int unsigned_p = 0; |
1313 | ||
1314 | /* Number of "L" suffixes encountered. */ | |
1315 | int long_p = 0; | |
1316 | ||
1317 | /* We have found a "L" or "U" suffix. */ | |
1318 | int found_suffix = 0; | |
1319 | ||
1320 | ULONGEST high_bit; | |
1321 | struct type *signed_type; | |
1322 | struct type *unsigned_type; | |
1323 | ||
1324 | if (parsed_float) | |
1325 | { | |
1326 | /* It's a float since it contains a point or an exponent. */ | |
fe9441f6 JK |
1327 | char *s; |
1328 | int num; /* number of tokens scanned by scanf */ | |
1329 | char saved_char; | |
27bc4d80 TJB |
1330 | |
1331 | /* If it ends at "df", "dd" or "dl", take it as type of decimal floating | |
1332 | point. Return DECFLOAT. */ | |
1333 | ||
fe9441f6 | 1334 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'f') |
27bc4d80 TJB |
1335 | { |
1336 | p[len - 2] = '\0'; | |
1337 | putithere->typed_val_decfloat.type | |
3e79cecf | 1338 | = parse_type->builtin_decfloat; |
e17a4113 UW |
1339 | decimal_from_string (putithere->typed_val_decfloat.val, 4, |
1340 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1341 | p[len - 2] = 'd'; |
1342 | return DECFLOAT; | |
27bc4d80 TJB |
1343 | } |
1344 | ||
fe9441f6 | 1345 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'd') |
27bc4d80 TJB |
1346 | { |
1347 | p[len - 2] = '\0'; | |
1348 | putithere->typed_val_decfloat.type | |
3e79cecf | 1349 | = parse_type->builtin_decdouble; |
e17a4113 UW |
1350 | decimal_from_string (putithere->typed_val_decfloat.val, 8, |
1351 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1352 | p[len - 2] = 'd'; |
1353 | return DECFLOAT; | |
27bc4d80 TJB |
1354 | } |
1355 | ||
fe9441f6 | 1356 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'l') |
27bc4d80 TJB |
1357 | { |
1358 | p[len - 2] = '\0'; | |
1359 | putithere->typed_val_decfloat.type | |
3e79cecf | 1360 | = parse_type->builtin_declong; |
e17a4113 UW |
1361 | decimal_from_string (putithere->typed_val_decfloat.val, 16, |
1362 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1363 | p[len - 2] = 'd'; |
1364 | return DECFLOAT; | |
27bc4d80 TJB |
1365 | } |
1366 | ||
fe9441f6 JK |
1367 | s = malloc (len); |
1368 | saved_char = p[len]; | |
1369 | p[len] = 0; /* null-terminate the token */ | |
689e4e2d | 1370 | num = sscanf (p, "%" DOUBLEST_SCAN_FORMAT "%s", |
96c1eda2 | 1371 | &putithere->typed_val_float.dval, s); |
c906108c | 1372 | p[len] = saved_char; /* restore the input stream */ |
42969d33 WZ |
1373 | |
1374 | if (num == 1) | |
1375 | putithere->typed_val_float.type = | |
3e79cecf | 1376 | parse_type->builtin_double; |
42969d33 WZ |
1377 | |
1378 | if (num == 2 ) | |
1379 | { | |
1380 | /* See if it has any float suffix: 'f' for float, 'l' for long | |
1381 | double. */ | |
1382 | if (!strcasecmp (s, "f")) | |
1383 | putithere->typed_val_float.type = | |
3e79cecf | 1384 | parse_type->builtin_float; |
42969d33 WZ |
1385 | else if (!strcasecmp (s, "l")) |
1386 | putithere->typed_val_float.type = | |
3e79cecf | 1387 | parse_type->builtin_long_double; |
42969d33 | 1388 | else |
348038cd MS |
1389 | { |
1390 | free (s); | |
1391 | return ERROR; | |
1392 | } | |
42969d33 | 1393 | } |
c906108c | 1394 | |
348038cd | 1395 | free (s); |
c906108c SS |
1396 | return FLOAT; |
1397 | } | |
1398 | ||
1399 | /* Handle base-switching prefixes 0x, 0t, 0d, 0 */ | |
1400 | if (p[0] == '0') | |
1401 | switch (p[1]) | |
1402 | { | |
1403 | case 'x': | |
1404 | case 'X': | |
1405 | if (len >= 3) | |
1406 | { | |
1407 | p += 2; | |
1408 | base = 16; | |
1409 | len -= 2; | |
1410 | } | |
1411 | break; | |
1412 | ||
b5cfddf5 JK |
1413 | case 'b': |
1414 | case 'B': | |
1415 | if (len >= 3) | |
1416 | { | |
1417 | p += 2; | |
1418 | base = 2; | |
1419 | len -= 2; | |
1420 | } | |
1421 | break; | |
1422 | ||
c906108c SS |
1423 | case 't': |
1424 | case 'T': | |
1425 | case 'd': | |
1426 | case 'D': | |
1427 | if (len >= 3) | |
1428 | { | |
1429 | p += 2; | |
1430 | base = 10; | |
1431 | len -= 2; | |
1432 | } | |
1433 | break; | |
1434 | ||
1435 | default: | |
1436 | base = 8; | |
1437 | break; | |
1438 | } | |
1439 | ||
1440 | while (len-- > 0) | |
1441 | { | |
1442 | c = *p++; | |
1443 | if (c >= 'A' && c <= 'Z') | |
1444 | c += 'a' - 'A'; | |
1445 | if (c != 'l' && c != 'u') | |
1446 | n *= base; | |
1447 | if (c >= '0' && c <= '9') | |
1448 | { | |
1449 | if (found_suffix) | |
1450 | return ERROR; | |
1451 | n += i = c - '0'; | |
1452 | } | |
1453 | else | |
1454 | { | |
1455 | if (base > 10 && c >= 'a' && c <= 'f') | |
1456 | { | |
1457 | if (found_suffix) | |
1458 | return ERROR; | |
1459 | n += i = c - 'a' + 10; | |
1460 | } | |
1461 | else if (c == 'l') | |
1462 | { | |
1463 | ++long_p; | |
1464 | found_suffix = 1; | |
1465 | } | |
1466 | else if (c == 'u') | |
1467 | { | |
1468 | unsigned_p = 1; | |
1469 | found_suffix = 1; | |
1470 | } | |
1471 | else | |
1472 | return ERROR; /* Char not a digit */ | |
1473 | } | |
1474 | if (i >= base) | |
1475 | return ERROR; /* Invalid digit in this base */ | |
1476 | ||
1477 | /* Portably test for overflow (only works for nonzero values, so make | |
1478 | a second check for zero). FIXME: Can't we just make n and prevn | |
1479 | unsigned and avoid this? */ | |
1480 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) | |
1481 | unsigned_p = 1; /* Try something unsigned */ | |
1482 | ||
1483 | /* Portably test for unsigned overflow. | |
1484 | FIXME: This check is wrong; for example it doesn't find overflow | |
1485 | on 0x123456789 when LONGEST is 32 bits. */ | |
1486 | if (c != 'l' && c != 'u' && n != 0) | |
1487 | { | |
1488 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) | |
1489 | error ("Numeric constant too large."); | |
1490 | } | |
1491 | prevn = n; | |
1492 | } | |
1493 | ||
1494 | /* An integer constant is an int, a long, or a long long. An L | |
1495 | suffix forces it to be long; an LL suffix forces it to be long | |
1496 | long. If not forced to a larger size, it gets the first type of | |
1497 | the above that it fits in. To figure out whether it fits, we | |
1498 | shift it right and see whether anything remains. Note that we | |
1499 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one | |
1500 | operation, because many compilers will warn about such a shift | |
9a76efb6 UW |
1501 | (which always produces a zero result). Sometimes gdbarch_int_bit |
1502 | or gdbarch_long_bit will be that big, sometimes not. To deal with | |
c906108c SS |
1503 | the case where it is we just always shift the value more than |
1504 | once, with fewer bits each time. */ | |
1505 | ||
1506 | un = (ULONGEST)n >> 2; | |
1507 | if (long_p == 0 | |
3e79cecf | 1508 | && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0) |
c906108c | 1509 | { |
3e79cecf | 1510 | high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1); |
c906108c SS |
1511 | |
1512 | /* A large decimal (not hex or octal) constant (between INT_MAX | |
1513 | and UINT_MAX) is a long or unsigned long, according to ANSI, | |
1514 | never an unsigned int, but this code treats it as unsigned | |
1515 | int. This probably should be fixed. GCC gives a warning on | |
1516 | such constants. */ | |
1517 | ||
3e79cecf UW |
1518 | unsigned_type = parse_type->builtin_unsigned_int; |
1519 | signed_type = parse_type->builtin_int; | |
c906108c SS |
1520 | } |
1521 | else if (long_p <= 1 | |
3e79cecf | 1522 | && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0) |
c906108c | 1523 | { |
3e79cecf UW |
1524 | high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1); |
1525 | unsigned_type = parse_type->builtin_unsigned_long; | |
1526 | signed_type = parse_type->builtin_long; | |
c906108c SS |
1527 | } |
1528 | else | |
1529 | { | |
1530 | int shift; | |
9a76efb6 | 1531 | if (sizeof (ULONGEST) * HOST_CHAR_BIT |
3e79cecf | 1532 | < gdbarch_long_long_bit (parse_gdbarch)) |
c906108c SS |
1533 | /* A long long does not fit in a LONGEST. */ |
1534 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); | |
1535 | else | |
3e79cecf | 1536 | shift = (gdbarch_long_long_bit (parse_gdbarch) - 1); |
c906108c | 1537 | high_bit = (ULONGEST) 1 << shift; |
3e79cecf UW |
1538 | unsigned_type = parse_type->builtin_unsigned_long_long; |
1539 | signed_type = parse_type->builtin_long_long; | |
c906108c SS |
1540 | } |
1541 | ||
1542 | putithere->typed_val_int.val = n; | |
1543 | ||
1544 | /* If the high bit of the worked out type is set then this number | |
1545 | has to be unsigned. */ | |
1546 | ||
1547 | if (unsigned_p || (n & high_bit)) | |
1548 | { | |
1549 | putithere->typed_val_int.type = unsigned_type; | |
1550 | } | |
1551 | else | |
1552 | { | |
1553 | putithere->typed_val_int.type = signed_type; | |
1554 | } | |
1555 | ||
1556 | return INT; | |
1557 | } | |
1558 | ||
6c7a06a3 TT |
1559 | /* Temporary obstack used for holding strings. */ |
1560 | static struct obstack tempbuf; | |
1561 | static int tempbuf_init; | |
1562 | ||
1563 | /* Parse a C escape sequence. The initial backslash of the sequence | |
1564 | is at (*PTR)[-1]. *PTR will be updated to point to just after the | |
1565 | last character of the sequence. If OUTPUT is not NULL, the | |
1566 | translated form of the escape sequence will be written there. If | |
1567 | OUTPUT is NULL, no output is written and the call will only affect | |
1568 | *PTR. If an escape sequence is expressed in target bytes, then the | |
1569 | entire sequence will simply be copied to OUTPUT. Return 1 if any | |
1570 | character was emitted, 0 otherwise. */ | |
1571 | ||
1572 | int | |
1573 | c_parse_escape (char **ptr, struct obstack *output) | |
1574 | { | |
1575 | char *tokptr = *ptr; | |
1576 | int result = 1; | |
1577 | ||
1578 | /* Some escape sequences undergo character set conversion. Those we | |
1579 | translate here. */ | |
1580 | switch (*tokptr) | |
1581 | { | |
1582 | /* Hex escapes do not undergo character set conversion, so keep | |
1583 | the escape sequence for later. */ | |
1584 | case 'x': | |
1585 | if (output) | |
1586 | obstack_grow_str (output, "\\x"); | |
1587 | ++tokptr; | |
1588 | if (!isxdigit (*tokptr)) | |
1589 | error (_("\\x escape without a following hex digit")); | |
1590 | while (isxdigit (*tokptr)) | |
1591 | { | |
1592 | if (output) | |
1593 | obstack_1grow (output, *tokptr); | |
1594 | ++tokptr; | |
1595 | } | |
1596 | break; | |
1597 | ||
1598 | /* Octal escapes do not undergo character set conversion, so | |
1599 | keep the escape sequence for later. */ | |
1600 | case '0': | |
1601 | case '1': | |
1602 | case '2': | |
1603 | case '3': | |
1604 | case '4': | |
1605 | case '5': | |
1606 | case '6': | |
1607 | case '7': | |
30b66ecc TT |
1608 | { |
1609 | int i; | |
1610 | if (output) | |
1611 | obstack_grow_str (output, "\\"); | |
1612 | for (i = 0; | |
1613 | i < 3 && isdigit (*tokptr) && *tokptr != '8' && *tokptr != '9'; | |
1614 | ++i) | |
1615 | { | |
1616 | if (output) | |
1617 | obstack_1grow (output, *tokptr); | |
1618 | ++tokptr; | |
1619 | } | |
1620 | } | |
6c7a06a3 TT |
1621 | break; |
1622 | ||
1623 | /* We handle UCNs later. We could handle them here, but that | |
1624 | would mean a spurious error in the case where the UCN could | |
1625 | be converted to the target charset but not the host | |
1626 | charset. */ | |
1627 | case 'u': | |
1628 | case 'U': | |
1629 | { | |
1630 | char c = *tokptr; | |
1631 | int i, len = c == 'U' ? 8 : 4; | |
1632 | if (output) | |
1633 | { | |
1634 | obstack_1grow (output, '\\'); | |
1635 | obstack_1grow (output, *tokptr); | |
1636 | } | |
1637 | ++tokptr; | |
1638 | if (!isxdigit (*tokptr)) | |
1639 | error (_("\\%c escape without a following hex digit"), c); | |
1640 | for (i = 0; i < len && isxdigit (*tokptr); ++i) | |
1641 | { | |
1642 | if (output) | |
1643 | obstack_1grow (output, *tokptr); | |
1644 | ++tokptr; | |
1645 | } | |
1646 | } | |
1647 | break; | |
1648 | ||
1649 | /* We must pass backslash through so that it does not | |
1650 | cause quoting during the second expansion. */ | |
1651 | case '\\': | |
1652 | if (output) | |
1653 | obstack_grow_str (output, "\\\\"); | |
1654 | ++tokptr; | |
1655 | break; | |
1656 | ||
1657 | /* Escapes which undergo conversion. */ | |
1658 | case 'a': | |
1659 | if (output) | |
1660 | obstack_1grow (output, '\a'); | |
1661 | ++tokptr; | |
1662 | break; | |
1663 | case 'b': | |
1664 | if (output) | |
1665 | obstack_1grow (output, '\b'); | |
1666 | ++tokptr; | |
1667 | break; | |
1668 | case 'f': | |
1669 | if (output) | |
1670 | obstack_1grow (output, '\f'); | |
1671 | ++tokptr; | |
1672 | break; | |
1673 | case 'n': | |
1674 | if (output) | |
1675 | obstack_1grow (output, '\n'); | |
1676 | ++tokptr; | |
1677 | break; | |
1678 | case 'r': | |
1679 | if (output) | |
1680 | obstack_1grow (output, '\r'); | |
1681 | ++tokptr; | |
1682 | break; | |
1683 | case 't': | |
1684 | if (output) | |
1685 | obstack_1grow (output, '\t'); | |
1686 | ++tokptr; | |
1687 | break; | |
1688 | case 'v': | |
1689 | if (output) | |
1690 | obstack_1grow (output, '\v'); | |
1691 | ++tokptr; | |
1692 | break; | |
1693 | ||
1694 | /* GCC extension. */ | |
1695 | case 'e': | |
1696 | if (output) | |
1697 | obstack_1grow (output, HOST_ESCAPE_CHAR); | |
1698 | ++tokptr; | |
1699 | break; | |
1700 | ||
1701 | /* Backslash-newline expands to nothing at all. */ | |
1702 | case '\n': | |
1703 | ++tokptr; | |
1704 | result = 0; | |
1705 | break; | |
1706 | ||
1707 | /* A few escapes just expand to the character itself. */ | |
1708 | case '\'': | |
1709 | case '\"': | |
1710 | case '?': | |
1711 | /* GCC extensions. */ | |
1712 | case '(': | |
1713 | case '{': | |
1714 | case '[': | |
1715 | case '%': | |
1716 | /* Unrecognized escapes turn into the character itself. */ | |
1717 | default: | |
1718 | if (output) | |
1719 | obstack_1grow (output, *tokptr); | |
1720 | ++tokptr; | |
1721 | break; | |
1722 | } | |
1723 | *ptr = tokptr; | |
1724 | return result; | |
1725 | } | |
1726 | ||
1727 | /* Parse a string or character literal from TOKPTR. The string or | |
1728 | character may be wide or unicode. *OUTPTR is set to just after the | |
1729 | end of the literal in the input string. The resulting token is | |
1730 | stored in VALUE. This returns a token value, either STRING or | |
1731 | CHAR, depending on what was parsed. *HOST_CHARS is set to the | |
1732 | number of host characters in the literal. */ | |
1733 | static int | |
1734 | parse_string_or_char (char *tokptr, char **outptr, struct typed_stoken *value, | |
1735 | int *host_chars) | |
1736 | { | |
8c5630cb | 1737 | int quote; |
6c7a06a3 TT |
1738 | enum c_string_type type; |
1739 | ||
1740 | /* Build the gdb internal form of the input string in tempbuf. Note | |
1741 | that the buffer is null byte terminated *only* for the | |
1742 | convenience of debugging gdb itself and printing the buffer | |
1743 | contents when the buffer contains no embedded nulls. Gdb does | |
1744 | not depend upon the buffer being null byte terminated, it uses | |
1745 | the length string instead. This allows gdb to handle C strings | |
1746 | (as well as strings in other languages) with embedded null | |
1747 | bytes */ | |
1748 | ||
1749 | if (!tempbuf_init) | |
1750 | tempbuf_init = 1; | |
1751 | else | |
1752 | obstack_free (&tempbuf, NULL); | |
1753 | obstack_init (&tempbuf); | |
1754 | ||
1755 | /* Record the string type. */ | |
1756 | if (*tokptr == 'L') | |
1757 | { | |
1758 | type = C_WIDE_STRING; | |
1759 | ++tokptr; | |
1760 | } | |
1761 | else if (*tokptr == 'u') | |
1762 | { | |
1763 | type = C_STRING_16; | |
1764 | ++tokptr; | |
1765 | } | |
1766 | else if (*tokptr == 'U') | |
1767 | { | |
1768 | type = C_STRING_32; | |
1769 | ++tokptr; | |
1770 | } | |
1771 | else | |
1772 | type = C_STRING; | |
1773 | ||
1774 | /* Skip the quote. */ | |
1775 | quote = *tokptr; | |
1776 | if (quote == '\'') | |
1777 | type |= C_CHAR; | |
1778 | ++tokptr; | |
1779 | ||
1780 | *host_chars = 0; | |
1781 | ||
1782 | while (*tokptr) | |
1783 | { | |
1784 | char c = *tokptr; | |
1785 | if (c == '\\') | |
1786 | { | |
1787 | ++tokptr; | |
1788 | *host_chars += c_parse_escape (&tokptr, &tempbuf); | |
1789 | } | |
1790 | else if (c == quote) | |
1791 | break; | |
1792 | else | |
1793 | { | |
1794 | obstack_1grow (&tempbuf, c); | |
1795 | ++tokptr; | |
1796 | /* FIXME: this does the wrong thing with multi-byte host | |
1797 | characters. We could use mbrlen here, but that would | |
1798 | make "set host-charset" a bit less useful. */ | |
1799 | ++*host_chars; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | if (*tokptr != quote) | |
1804 | { | |
1805 | if (quote == '"') | |
1806 | error ("Unterminated string in expression."); | |
1807 | else | |
1808 | error ("Unmatched single quote."); | |
1809 | } | |
1810 | ++tokptr; | |
1811 | ||
1812 | value->type = type; | |
1813 | value->ptr = obstack_base (&tempbuf); | |
1814 | value->length = obstack_object_size (&tempbuf); | |
1815 | ||
1816 | *outptr = tokptr; | |
1817 | ||
1818 | return quote == '"' ? STRING : CHAR; | |
1819 | } | |
1820 | ||
c906108c SS |
1821 | struct token |
1822 | { | |
1823 | char *operator; | |
1824 | int token; | |
1825 | enum exp_opcode opcode; | |
ba163c7e | 1826 | int cxx_only; |
c906108c SS |
1827 | }; |
1828 | ||
1829 | static const struct token tokentab3[] = | |
1830 | { | |
ba163c7e | 1831 | {">>=", ASSIGN_MODIFY, BINOP_RSH, 0}, |
c1af96a0 KS |
1832 | {"<<=", ASSIGN_MODIFY, BINOP_LSH, 0}, |
1833 | {"->*", ARROW_STAR, BINOP_END, 1} | |
c906108c SS |
1834 | }; |
1835 | ||
1836 | static const struct token tokentab2[] = | |
1837 | { | |
ba163c7e TT |
1838 | {"+=", ASSIGN_MODIFY, BINOP_ADD, 0}, |
1839 | {"-=", ASSIGN_MODIFY, BINOP_SUB, 0}, | |
1840 | {"*=", ASSIGN_MODIFY, BINOP_MUL, 0}, | |
1841 | {"/=", ASSIGN_MODIFY, BINOP_DIV, 0}, | |
1842 | {"%=", ASSIGN_MODIFY, BINOP_REM, 0}, | |
1843 | {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR, 0}, | |
1844 | {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND, 0}, | |
1845 | {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR, 0}, | |
1846 | {"++", INCREMENT, BINOP_END, 0}, | |
1847 | {"--", DECREMENT, BINOP_END, 0}, | |
1848 | {"->", ARROW, BINOP_END, 0}, | |
1849 | {"&&", ANDAND, BINOP_END, 0}, | |
1850 | {"||", OROR, BINOP_END, 0}, | |
ec7f2efe KS |
1851 | /* "::" is *not* only C++: gdb overrides its meaning in several |
1852 | different ways, e.g., 'filename'::func, function::variable. */ | |
ba163c7e TT |
1853 | {"::", COLONCOLON, BINOP_END, 0}, |
1854 | {"<<", LSH, BINOP_END, 0}, | |
1855 | {">>", RSH, BINOP_END, 0}, | |
1856 | {"==", EQUAL, BINOP_END, 0}, | |
1857 | {"!=", NOTEQUAL, BINOP_END, 0}, | |
1858 | {"<=", LEQ, BINOP_END, 0}, | |
c1af96a0 | 1859 | {">=", GEQ, BINOP_END, 0}, |
ec7f2efe | 1860 | {".*", DOT_STAR, BINOP_END, 1} |
ba163c7e TT |
1861 | }; |
1862 | ||
1863 | /* Identifier-like tokens. */ | |
1864 | static const struct token ident_tokens[] = | |
1865 | { | |
1866 | {"unsigned", UNSIGNED, OP_NULL, 0}, | |
1867 | {"template", TEMPLATE, OP_NULL, 1}, | |
1868 | {"volatile", VOLATILE_KEYWORD, OP_NULL, 0}, | |
1869 | {"struct", STRUCT, OP_NULL, 0}, | |
1870 | {"signed", SIGNED_KEYWORD, OP_NULL, 0}, | |
1871 | {"sizeof", SIZEOF, OP_NULL, 0}, | |
1872 | {"double", DOUBLE_KEYWORD, OP_NULL, 0}, | |
1873 | {"false", FALSEKEYWORD, OP_NULL, 1}, | |
1874 | {"class", CLASS, OP_NULL, 1}, | |
1875 | {"union", UNION, OP_NULL, 0}, | |
1876 | {"short", SHORT, OP_NULL, 0}, | |
1877 | {"const", CONST_KEYWORD, OP_NULL, 0}, | |
1878 | {"enum", ENUM, OP_NULL, 0}, | |
1879 | {"long", LONG, OP_NULL, 0}, | |
1880 | {"true", TRUEKEYWORD, OP_NULL, 1}, | |
1881 | {"int", INT_KEYWORD, OP_NULL, 0}, | |
66c53f2b KS |
1882 | {"new", NEW, OP_NULL, 1}, |
1883 | {"delete", DELETE, OP_NULL, 1}, | |
1884 | {"operator", OPERATOR, OP_NULL, 1}, | |
ba163c7e TT |
1885 | |
1886 | {"and", ANDAND, BINOP_END, 1}, | |
1887 | {"and_eq", ASSIGN_MODIFY, BINOP_BITWISE_AND, 1}, | |
1888 | {"bitand", '&', OP_NULL, 1}, | |
1889 | {"bitor", '|', OP_NULL, 1}, | |
1890 | {"compl", '~', OP_NULL, 1}, | |
1891 | {"not", '!', OP_NULL, 1}, | |
1892 | {"not_eq", NOTEQUAL, BINOP_END, 1}, | |
1893 | {"or", OROR, BINOP_END, 1}, | |
1894 | {"or_eq", ASSIGN_MODIFY, BINOP_BITWISE_IOR, 1}, | |
1895 | {"xor", '^', OP_NULL, 1}, | |
4e8f195d TT |
1896 | {"xor_eq", ASSIGN_MODIFY, BINOP_BITWISE_XOR, 1}, |
1897 | ||
1898 | {"const_cast", CONST_CAST, OP_NULL, 1 }, | |
1899 | {"dynamic_cast", DYNAMIC_CAST, OP_NULL, 1 }, | |
1900 | {"static_cast", STATIC_CAST, OP_NULL, 1 }, | |
1901 | {"reinterpret_cast", REINTERPRET_CAST, OP_NULL, 1 } | |
c906108c SS |
1902 | }; |
1903 | ||
7c8adf68 TT |
1904 | /* When we find that lexptr (the global var defined in parse.c) is |
1905 | pointing at a macro invocation, we expand the invocation, and call | |
1906 | scan_macro_expansion to save the old lexptr here and point lexptr | |
1907 | into the expanded text. When we reach the end of that, we call | |
1908 | end_macro_expansion to pop back to the value we saved here. The | |
1909 | macro expansion code promises to return only fully-expanded text, | |
1910 | so we don't need to "push" more than one level. | |
1911 | ||
1912 | This is disgusting, of course. It would be cleaner to do all macro | |
1913 | expansion beforehand, and then hand that to lexptr. But we don't | |
1914 | really know where the expression ends. Remember, in a command like | |
1915 | ||
1916 | (gdb) break *ADDRESS if CONDITION | |
1917 | ||
1918 | we evaluate ADDRESS in the scope of the current frame, but we | |
1919 | evaluate CONDITION in the scope of the breakpoint's location. So | |
1920 | it's simply wrong to try to macro-expand the whole thing at once. */ | |
1921 | static char *macro_original_text; | |
1922 | ||
1923 | /* We save all intermediate macro expansions on this obstack for the | |
1924 | duration of a single parse. The expansion text may sometimes have | |
1925 | to live past the end of the expansion, due to yacc lookahead. | |
1926 | Rather than try to be clever about saving the data for a single | |
1927 | token, we simply keep it all and delete it after parsing has | |
1928 | completed. */ | |
1929 | static struct obstack expansion_obstack; | |
1930 | ||
1931 | static void | |
1932 | scan_macro_expansion (char *expansion) | |
1933 | { | |
1934 | char *copy; | |
1935 | ||
1936 | /* We'd better not be trying to push the stack twice. */ | |
1937 | gdb_assert (! macro_original_text); | |
1938 | ||
1939 | /* Copy to the obstack, and then free the intermediate | |
1940 | expansion. */ | |
1941 | copy = obstack_copy0 (&expansion_obstack, expansion, strlen (expansion)); | |
1942 | xfree (expansion); | |
1943 | ||
1944 | /* Save the old lexptr value, so we can return to it when we're done | |
1945 | parsing the expanded text. */ | |
1946 | macro_original_text = lexptr; | |
1947 | lexptr = copy; | |
1948 | } | |
1949 | ||
1950 | ||
1951 | static int | |
1952 | scanning_macro_expansion (void) | |
1953 | { | |
1954 | return macro_original_text != 0; | |
1955 | } | |
1956 | ||
1957 | ||
1958 | static void | |
1959 | finished_macro_expansion (void) | |
1960 | { | |
1961 | /* There'd better be something to pop back to. */ | |
1962 | gdb_assert (macro_original_text); | |
1963 | ||
1964 | /* Pop back to the original text. */ | |
1965 | lexptr = macro_original_text; | |
1966 | macro_original_text = 0; | |
1967 | } | |
1968 | ||
1969 | ||
1970 | static void | |
1971 | scan_macro_cleanup (void *dummy) | |
1972 | { | |
1973 | if (macro_original_text) | |
1974 | finished_macro_expansion (); | |
1975 | ||
1976 | obstack_free (&expansion_obstack, NULL); | |
1977 | } | |
1978 | ||
4e8f195d TT |
1979 | /* Return true iff the token represents a C++ cast operator. */ |
1980 | ||
1981 | static int | |
1982 | is_cast_operator (const char *token, int len) | |
1983 | { | |
1984 | return (! strncmp (token, "dynamic_cast", len) | |
1985 | || ! strncmp (token, "static_cast", len) | |
1986 | || ! strncmp (token, "reinterpret_cast", len) | |
1987 | || ! strncmp (token, "const_cast", len)); | |
1988 | } | |
7c8adf68 TT |
1989 | |
1990 | /* The scope used for macro expansion. */ | |
1991 | static struct macro_scope *expression_macro_scope; | |
1992 | ||
65d12d83 TT |
1993 | /* This is set if a NAME token appeared at the very end of the input |
1994 | string, with no whitespace separating the name from the EOF. This | |
1995 | is used only when parsing to do field name completion. */ | |
1996 | static int saw_name_at_eof; | |
1997 | ||
1998 | /* This is set if the previously-returned token was a structure | |
1999 | operator -- either '.' or ARROW. This is used only when parsing to | |
2000 | do field name completion. */ | |
2001 | static int last_was_structop; | |
2002 | ||
c906108c SS |
2003 | /* Read one token, getting characters through lexptr. */ |
2004 | ||
2005 | static int | |
48e32051 | 2006 | lex_one_token (void) |
c906108c SS |
2007 | { |
2008 | int c; | |
2009 | int namelen; | |
2010 | unsigned int i; | |
2011 | char *tokstart; | |
65d12d83 | 2012 | int saw_structop = last_was_structop; |
ba163c7e | 2013 | char *copy; |
65d12d83 TT |
2014 | |
2015 | last_was_structop = 0; | |
2016 | ||
c906108c SS |
2017 | retry: |
2018 | ||
84f0252a JB |
2019 | /* Check if this is a macro invocation that we need to expand. */ |
2020 | if (! scanning_macro_expansion ()) | |
2021 | { | |
2022 | char *expanded = macro_expand_next (&lexptr, | |
7c8adf68 TT |
2023 | standard_macro_lookup, |
2024 | expression_macro_scope); | |
84f0252a JB |
2025 | |
2026 | if (expanded) | |
2027 | scan_macro_expansion (expanded); | |
2028 | } | |
2029 | ||
665132f9 | 2030 | prev_lexptr = lexptr; |
c906108c SS |
2031 | |
2032 | tokstart = lexptr; | |
2033 | /* See if it is a special token of length 3. */ | |
2034 | for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++) | |
bf896cb0 | 2035 | if (strncmp (tokstart, tokentab3[i].operator, 3) == 0) |
c906108c | 2036 | { |
ec7f2efe KS |
2037 | if (tokentab3[i].cxx_only |
2038 | && parse_language->la_language != language_cplus) | |
2039 | break; | |
2040 | ||
c906108c SS |
2041 | lexptr += 3; |
2042 | yylval.opcode = tokentab3[i].opcode; | |
2043 | return tokentab3[i].token; | |
2044 | } | |
2045 | ||
2046 | /* See if it is a special token of length 2. */ | |
2047 | for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++) | |
bf896cb0 | 2048 | if (strncmp (tokstart, tokentab2[i].operator, 2) == 0) |
c906108c | 2049 | { |
ec7f2efe KS |
2050 | if (tokentab2[i].cxx_only |
2051 | && parse_language->la_language != language_cplus) | |
2052 | break; | |
2053 | ||
c906108c SS |
2054 | lexptr += 2; |
2055 | yylval.opcode = tokentab2[i].opcode; | |
37cd5d19 | 2056 | if (in_parse_field && tokentab2[i].token == ARROW) |
65d12d83 | 2057 | last_was_structop = 1; |
c906108c SS |
2058 | return tokentab2[i].token; |
2059 | } | |
2060 | ||
2061 | switch (c = *tokstart) | |
2062 | { | |
2063 | case 0: | |
84f0252a JB |
2064 | /* If we were just scanning the result of a macro expansion, |
2065 | then we need to resume scanning the original text. | |
65d12d83 TT |
2066 | If we're parsing for field name completion, and the previous |
2067 | token allows such completion, return a COMPLETE token. | |
84f0252a JB |
2068 | Otherwise, we were already scanning the original text, and |
2069 | we're really done. */ | |
2070 | if (scanning_macro_expansion ()) | |
2071 | { | |
2072 | finished_macro_expansion (); | |
2073 | goto retry; | |
2074 | } | |
65d12d83 TT |
2075 | else if (saw_name_at_eof) |
2076 | { | |
2077 | saw_name_at_eof = 0; | |
2078 | return COMPLETE; | |
2079 | } | |
2080 | else if (saw_structop) | |
2081 | return COMPLETE; | |
84f0252a JB |
2082 | else |
2083 | return 0; | |
c906108c SS |
2084 | |
2085 | case ' ': | |
2086 | case '\t': | |
2087 | case '\n': | |
2088 | lexptr++; | |
2089 | goto retry; | |
2090 | ||
379a77b5 | 2091 | case '[': |
c906108c SS |
2092 | case '(': |
2093 | paren_depth++; | |
2094 | lexptr++; | |
2095 | return c; | |
2096 | ||
379a77b5 | 2097 | case ']': |
c906108c SS |
2098 | case ')': |
2099 | if (paren_depth == 0) | |
2100 | return 0; | |
2101 | paren_depth--; | |
2102 | lexptr++; | |
2103 | return c; | |
2104 | ||
2105 | case ',': | |
84f0252a JB |
2106 | if (comma_terminates |
2107 | && paren_depth == 0 | |
2108 | && ! scanning_macro_expansion ()) | |
c906108c SS |
2109 | return 0; |
2110 | lexptr++; | |
2111 | return c; | |
2112 | ||
2113 | case '.': | |
2114 | /* Might be a floating point number. */ | |
2115 | if (lexptr[1] < '0' || lexptr[1] > '9') | |
65d12d83 TT |
2116 | { |
2117 | if (in_parse_field) | |
2118 | last_was_structop = 1; | |
2119 | goto symbol; /* Nope, must be a symbol. */ | |
2120 | } | |
c906108c SS |
2121 | /* FALL THRU into number case. */ |
2122 | ||
2123 | case '0': | |
2124 | case '1': | |
2125 | case '2': | |
2126 | case '3': | |
2127 | case '4': | |
2128 | case '5': | |
2129 | case '6': | |
2130 | case '7': | |
2131 | case '8': | |
2132 | case '9': | |
2133 | { | |
2134 | /* It's a number. */ | |
2135 | int got_dot = 0, got_e = 0, toktype; | |
710122da | 2136 | char *p = tokstart; |
c906108c SS |
2137 | int hex = input_radix > 10; |
2138 | ||
2139 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
2140 | { | |
2141 | p += 2; | |
2142 | hex = 1; | |
2143 | } | |
2144 | else if (c == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D')) | |
2145 | { | |
2146 | p += 2; | |
2147 | hex = 0; | |
2148 | } | |
2149 | ||
2150 | for (;; ++p) | |
2151 | { | |
2152 | /* This test includes !hex because 'e' is a valid hex digit | |
2153 | and thus does not indicate a floating point number when | |
2154 | the radix is hex. */ | |
2155 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) | |
2156 | got_dot = got_e = 1; | |
2157 | /* This test does not include !hex, because a '.' always indicates | |
2158 | a decimal floating point number regardless of the radix. */ | |
2159 | else if (!got_dot && *p == '.') | |
2160 | got_dot = 1; | |
2161 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') | |
2162 | && (*p == '-' || *p == '+')) | |
2163 | /* This is the sign of the exponent, not the end of the | |
2164 | number. */ | |
2165 | continue; | |
2166 | /* We will take any letters or digits. parse_number will | |
2167 | complain if past the radix, or if L or U are not final. */ | |
2168 | else if ((*p < '0' || *p > '9') | |
2169 | && ((*p < 'a' || *p > 'z') | |
2170 | && (*p < 'A' || *p > 'Z'))) | |
2171 | break; | |
2172 | } | |
2173 | toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval); | |
2174 | if (toktype == ERROR) | |
2175 | { | |
2176 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
2177 | ||
2178 | memcpy (err_copy, tokstart, p - tokstart); | |
2179 | err_copy[p - tokstart] = 0; | |
2180 | error ("Invalid number \"%s\".", err_copy); | |
2181 | } | |
2182 | lexptr = p; | |
2183 | return toktype; | |
2184 | } | |
2185 | ||
2186 | case '+': | |
2187 | case '-': | |
2188 | case '*': | |
2189 | case '/': | |
2190 | case '%': | |
2191 | case '|': | |
2192 | case '&': | |
2193 | case '^': | |
2194 | case '~': | |
2195 | case '!': | |
2196 | case '@': | |
2197 | case '<': | |
2198 | case '>': | |
c906108c SS |
2199 | case '?': |
2200 | case ':': | |
2201 | case '=': | |
2202 | case '{': | |
2203 | case '}': | |
2204 | symbol: | |
2205 | lexptr++; | |
2206 | return c; | |
2207 | ||
6c7a06a3 TT |
2208 | case 'L': |
2209 | case 'u': | |
2210 | case 'U': | |
2211 | if (tokstart[1] != '"' && tokstart[1] != '\'') | |
2212 | break; | |
2213 | /* Fall through. */ | |
2214 | case '\'': | |
c906108c | 2215 | case '"': |
6c7a06a3 TT |
2216 | { |
2217 | int host_len; | |
2218 | int result = parse_string_or_char (tokstart, &lexptr, &yylval.tsval, | |
2219 | &host_len); | |
2220 | if (result == CHAR) | |
c906108c | 2221 | { |
6c7a06a3 TT |
2222 | if (host_len == 0) |
2223 | error ("Empty character constant."); | |
2224 | else if (host_len > 2 && c == '\'') | |
c906108c | 2225 | { |
6c7a06a3 TT |
2226 | ++tokstart; |
2227 | namelen = lexptr - tokstart - 1; | |
2228 | goto tryname; | |
c906108c | 2229 | } |
6c7a06a3 TT |
2230 | else if (host_len > 1) |
2231 | error ("Invalid character constant."); | |
c906108c | 2232 | } |
6c7a06a3 TT |
2233 | return result; |
2234 | } | |
c906108c SS |
2235 | } |
2236 | ||
2237 | if (!(c == '_' || c == '$' | |
2238 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
2239 | /* We must have come across a bad character (e.g. ';'). */ | |
2240 | error ("Invalid character '%c' in expression.", c); | |
2241 | ||
2242 | /* It's a name. See how long it is. */ | |
2243 | namelen = 0; | |
2244 | for (c = tokstart[namelen]; | |
2245 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
2246 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) | |
2247 | { | |
2248 | /* Template parameter lists are part of the name. | |
2249 | FIXME: This mishandles `print $a<4&&$a>3'. */ | |
2250 | ||
2251 | if (c == '<') | |
4e8f195d TT |
2252 | { |
2253 | if (! is_cast_operator (tokstart, namelen)) | |
2254 | { | |
2255 | /* Scan ahead to get rest of the template specification. Note | |
2256 | that we look ahead only when the '<' adjoins non-whitespace | |
2257 | characters; for comparison expressions, e.g. "a < b > c", | |
2258 | there must be spaces before the '<', etc. */ | |
c906108c | 2259 | |
4e8f195d TT |
2260 | char * p = find_template_name_end (tokstart + namelen); |
2261 | if (p) | |
2262 | namelen = p - tokstart; | |
2263 | } | |
2264 | break; | |
c906108c SS |
2265 | } |
2266 | c = tokstart[++namelen]; | |
2267 | } | |
2268 | ||
84f0252a JB |
2269 | /* The token "if" terminates the expression and is NOT removed from |
2270 | the input stream. It doesn't count if it appears in the | |
2271 | expansion of a macro. */ | |
2272 | if (namelen == 2 | |
2273 | && tokstart[0] == 'i' | |
2274 | && tokstart[1] == 'f' | |
2275 | && ! scanning_macro_expansion ()) | |
c906108c SS |
2276 | { |
2277 | return 0; | |
2278 | } | |
2279 | ||
b6199126 DJ |
2280 | /* For the same reason (breakpoint conditions), "thread N" |
2281 | terminates the expression. "thread" could be an identifier, but | |
2282 | an identifier is never followed by a number without intervening | |
2283 | punctuation. "task" is similar. Handle abbreviations of these, | |
2284 | similarly to breakpoint.c:find_condition_and_thread. */ | |
2285 | if (namelen >= 1 | |
2286 | && (strncmp (tokstart, "thread", namelen) == 0 | |
2287 | || strncmp (tokstart, "task", namelen) == 0) | |
2288 | && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t') | |
2289 | && ! scanning_macro_expansion ()) | |
2290 | { | |
2291 | char *p = tokstart + namelen + 1; | |
2292 | while (*p == ' ' || *p == '\t') | |
2293 | p++; | |
2294 | if (*p >= '0' && *p <= '9') | |
2295 | return 0; | |
2296 | } | |
2297 | ||
c906108c SS |
2298 | lexptr += namelen; |
2299 | ||
2300 | tryname: | |
2301 | ||
c906108c SS |
2302 | yylval.sval.ptr = tokstart; |
2303 | yylval.sval.length = namelen; | |
2304 | ||
ba163c7e TT |
2305 | /* Catch specific keywords. */ |
2306 | copy = copy_name (yylval.sval); | |
2307 | for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++) | |
2308 | if (strcmp (copy, ident_tokens[i].operator) == 0) | |
2309 | { | |
2310 | if (ident_tokens[i].cxx_only | |
2311 | && parse_language->la_language != language_cplus) | |
2312 | break; | |
2313 | ||
2314 | /* It is ok to always set this, even though we don't always | |
2315 | strictly need to. */ | |
2316 | yylval.opcode = ident_tokens[i].opcode; | |
2317 | return ident_tokens[i].token; | |
2318 | } | |
2319 | ||
c906108c | 2320 | if (*tokstart == '$') |
48e32051 TT |
2321 | return VARIABLE; |
2322 | ||
2323 | if (in_parse_field && *lexptr == '\0') | |
2324 | saw_name_at_eof = 1; | |
2325 | return NAME; | |
2326 | } | |
2327 | ||
2328 | /* An object of this type is pushed on a FIFO by the "outer" lexer. */ | |
2329 | typedef struct | |
2330 | { | |
2331 | int token; | |
e707a91d | 2332 | YYSTYPE value; |
48e32051 TT |
2333 | } token_and_value; |
2334 | ||
2335 | DEF_VEC_O (token_and_value); | |
2336 | ||
2337 | /* A FIFO of tokens that have been read but not yet returned to the | |
2338 | parser. */ | |
2339 | static VEC (token_and_value) *token_fifo; | |
2340 | ||
2341 | /* Non-zero if the lexer should return tokens from the FIFO. */ | |
2342 | static int popping; | |
2343 | ||
2344 | /* Temporary storage for c_lex; this holds symbol names as they are | |
2345 | built up. */ | |
2346 | static struct obstack name_obstack; | |
2347 | ||
2348 | /* Classify a NAME token. The contents of the token are in `yylval'. | |
2349 | Updates yylval and returns the new token type. BLOCK is the block | |
2350 | in which lookups start; this can be NULL to mean the global | |
2351 | scope. */ | |
2352 | static int | |
2353 | classify_name (struct block *block) | |
2354 | { | |
2355 | struct symbol *sym; | |
2356 | char *copy; | |
2357 | int is_a_field_of_this = 0; | |
2358 | ||
2359 | copy = copy_name (yylval.sval); | |
2360 | ||
2361 | sym = lookup_symbol (copy, block, VAR_DOMAIN, | |
2362 | parse_language->la_language == language_cplus | |
2363 | ? &is_a_field_of_this : (int *) NULL); | |
2364 | ||
2365 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
c906108c | 2366 | { |
48e32051 TT |
2367 | yylval.ssym.sym = sym; |
2368 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
2369 | return BLOCKNAME; | |
c906108c | 2370 | } |
48e32051 TT |
2371 | else if (!sym) |
2372 | { | |
2373 | /* See if it's a file name. */ | |
2374 | struct symtab *symtab; | |
c906108c | 2375 | |
48e32051 TT |
2376 | symtab = lookup_symtab (copy); |
2377 | if (symtab) | |
2378 | { | |
2379 | yylval.bval = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
2380 | return FILENAME; | |
2381 | } | |
2382 | } | |
c906108c | 2383 | |
48e32051 TT |
2384 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
2385 | { | |
2386 | yylval.tsym.type = SYMBOL_TYPE (sym); | |
47663de5 | 2387 | return TYPENAME; |
48e32051 | 2388 | } |
c906108c | 2389 | |
48e32051 TT |
2390 | yylval.tsym.type |
2391 | = language_lookup_primitive_type_by_name (parse_language, | |
2392 | parse_gdbarch, copy); | |
2393 | if (yylval.tsym.type != NULL) | |
2394 | return TYPENAME; | |
2395 | ||
2396 | /* Input names that aren't symbols but ARE valid hex numbers, when | |
2397 | the input radix permits them, can be names or numbers depending | |
2398 | on the parse. Note we support radixes > 16 here. */ | |
2399 | if (!sym | |
2400 | && ((copy[0] >= 'a' && copy[0] < 'a' + input_radix - 10) | |
2401 | || (copy[0] >= 'A' && copy[0] < 'A' + input_radix - 10))) | |
2402 | { | |
2403 | YYSTYPE newlval; /* Its value is ignored. */ | |
2404 | int hextype = parse_number (copy, yylval.sval.length, 0, &newlval); | |
2405 | if (hextype == INT) | |
2406 | { | |
2407 | yylval.ssym.sym = sym; | |
2408 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
2409 | return NAME_OR_INT; | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | /* Any other kind of symbol */ | |
2414 | yylval.ssym.sym = sym; | |
2415 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
7322dca9 SW |
2416 | |
2417 | if (sym == NULL | |
2418 | && parse_language->la_language == language_cplus | |
2419 | && !lookup_minimal_symbol (copy, NULL, NULL)) | |
2420 | return UNKNOWN_CPP_NAME; | |
2421 | ||
48e32051 TT |
2422 | return NAME; |
2423 | } | |
c906108c | 2424 | |
48e32051 TT |
2425 | /* Like classify_name, but used by the inner loop of the lexer, when a |
2426 | name might have already been seen. FIRST_NAME is true if the token | |
2427 | in `yylval' is the first component of a name, false otherwise. If | |
2428 | this function returns NAME, it might not have updated `yylval'. | |
2429 | This is ok because the caller only cares about TYPENAME. */ | |
2430 | static int | |
2431 | classify_inner_name (struct block *block, int first_name) | |
2432 | { | |
2433 | struct type *type, *new_type; | |
2434 | char *copy; | |
2435 | ||
2436 | if (first_name) | |
2437 | return classify_name (block); | |
2438 | ||
2439 | type = check_typedef (yylval.tsym.type); | |
2440 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
2441 | && TYPE_CODE (type) != TYPE_CODE_UNION | |
2442 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
2443 | /* We know the caller won't expect us to update yylval. */ | |
c906108c | 2444 | return NAME; |
48e32051 TT |
2445 | |
2446 | copy = copy_name (yylval.tsym.stoken); | |
2447 | new_type = cp_lookup_nested_type (type, copy, block); | |
2448 | ||
2449 | if (new_type == NULL) | |
2450 | /* We know the caller won't expect us to update yylval. */ | |
2451 | return NAME; | |
2452 | ||
2453 | yylval.tsym.type = new_type; | |
2454 | return TYPENAME; | |
2455 | } | |
2456 | ||
2457 | /* The outer level of a two-level lexer. This calls the inner lexer | |
2458 | to return tokens. It then either returns these tokens, or | |
2459 | aggregates them into a larger token. This lets us work around a | |
2460 | problem in our parsing approach, where the parser could not | |
2461 | distinguish between qualified names and qualified types at the | |
2462 | right point. | |
2463 | ||
2464 | This approach is still not ideal, because it mishandles template | |
2465 | types. See the comment in lex_one_token for an example. However, | |
2466 | this is still an improvement over the earlier approach, and will | |
2467 | suffice until we move to better parsing technology. */ | |
2468 | static int | |
2469 | yylex (void) | |
2470 | { | |
2471 | token_and_value current; | |
48e32051 TT |
2472 | int first_was_coloncolon, last_was_coloncolon, first_iter; |
2473 | ||
2474 | if (popping && !VEC_empty (token_and_value, token_fifo)) | |
2475 | { | |
2476 | token_and_value tv = *VEC_index (token_and_value, token_fifo, 0); | |
2477 | VEC_ordered_remove (token_and_value, token_fifo, 0); | |
2478 | yylval = tv.value; | |
2479 | return tv.token; | |
2480 | } | |
2481 | popping = 0; | |
2482 | ||
2483 | current.token = lex_one_token (); | |
2484 | if (current.token == NAME) | |
2485 | current.token = classify_name (expression_context_block); | |
2486 | if (parse_language->la_language != language_cplus | |
2487 | || (current.token != TYPENAME && current.token != COLONCOLON)) | |
2488 | return current.token; | |
2489 | ||
2490 | first_was_coloncolon = current.token == COLONCOLON; | |
2491 | last_was_coloncolon = first_was_coloncolon; | |
2492 | obstack_free (&name_obstack, obstack_base (&name_obstack)); | |
2493 | if (!last_was_coloncolon) | |
2494 | obstack_grow (&name_obstack, yylval.sval.ptr, yylval.sval.length); | |
2495 | current.value = yylval; | |
2496 | first_iter = 1; | |
2497 | while (1) | |
2498 | { | |
2499 | token_and_value next; | |
2500 | ||
2501 | next.token = lex_one_token (); | |
2502 | next.value = yylval; | |
2503 | ||
2504 | if (next.token == NAME && last_was_coloncolon) | |
2505 | { | |
2506 | int classification; | |
2507 | ||
2508 | classification = classify_inner_name (first_was_coloncolon | |
2509 | ? NULL | |
2510 | : expression_context_block, | |
2511 | first_iter); | |
2512 | /* We keep going until we either run out of names, or until | |
2513 | we have a qualified name which is not a type. */ | |
2514 | if (classification != TYPENAME) | |
2515 | { | |
2516 | /* Push the final component and leave the loop. */ | |
2517 | VEC_safe_push (token_and_value, token_fifo, &next); | |
2518 | break; | |
2519 | } | |
2520 | ||
2521 | /* Update the partial name we are constructing. */ | |
2522 | if (!first_iter) | |
2523 | { | |
2524 | /* We don't want to put a leading "::" into the name. */ | |
2525 | obstack_grow_str (&name_obstack, "::"); | |
2526 | } | |
2527 | obstack_grow (&name_obstack, next.value.sval.ptr, | |
2528 | next.value.sval.length); | |
2529 | ||
2530 | yylval.sval.ptr = obstack_base (&name_obstack); | |
2531 | yylval.sval.length = obstack_object_size (&name_obstack); | |
2532 | current.value = yylval; | |
2533 | current.token = classification; | |
2534 | ||
2535 | last_was_coloncolon = 0; | |
2536 | } | |
2537 | else if (next.token == COLONCOLON && !last_was_coloncolon) | |
2538 | last_was_coloncolon = 1; | |
2539 | else | |
2540 | { | |
2541 | /* We've reached the end of the name. */ | |
2542 | VEC_safe_push (token_and_value, token_fifo, &next); | |
2543 | break; | |
2544 | } | |
2545 | ||
2546 | first_iter = 0; | |
2547 | } | |
2548 | ||
2549 | popping = 1; | |
2550 | ||
2551 | /* If we ended with a "::", insert it too. */ | |
2552 | if (last_was_coloncolon) | |
2553 | { | |
2554 | token_and_value cc; | |
2555 | memset (&cc, 0, sizeof (token_and_value)); | |
af53d231 | 2556 | if (first_was_coloncolon && first_iter) |
48e32051 TT |
2557 | { |
2558 | yylval = cc.value; | |
2559 | return COLONCOLON; | |
2560 | } | |
2561 | cc.token = COLONCOLON; | |
2562 | VEC_safe_insert (token_and_value, token_fifo, 0, &cc); | |
2563 | } | |
2564 | ||
2565 | yylval = current.value; | |
2566 | yylval.sval.ptr = obstack_copy0 (&expansion_obstack, | |
2567 | yylval.sval.ptr, | |
2568 | yylval.sval.length); | |
2569 | return current.token; | |
c906108c SS |
2570 | } |
2571 | ||
65d12d83 TT |
2572 | int |
2573 | c_parse (void) | |
2574 | { | |
7c8adf68 TT |
2575 | int result; |
2576 | struct cleanup *back_to = make_cleanup (free_current_contents, | |
2577 | &expression_macro_scope); | |
2578 | ||
2579 | /* Set up the scope for macro expansion. */ | |
2580 | expression_macro_scope = NULL; | |
2581 | ||
2582 | if (expression_context_block) | |
2583 | expression_macro_scope | |
2584 | = sal_macro_scope (find_pc_line (expression_context_pc, 0)); | |
2585 | else | |
2586 | expression_macro_scope = default_macro_scope (); | |
2587 | if (! expression_macro_scope) | |
2588 | expression_macro_scope = user_macro_scope (); | |
2589 | ||
2590 | /* Initialize macro expansion code. */ | |
2591 | obstack_init (&expansion_obstack); | |
2592 | gdb_assert (! macro_original_text); | |
2593 | make_cleanup (scan_macro_cleanup, 0); | |
2594 | ||
92981e24 TT |
2595 | make_cleanup_restore_integer (&yydebug); |
2596 | yydebug = parser_debug; | |
2597 | ||
7c8adf68 | 2598 | /* Initialize some state used by the lexer. */ |
65d12d83 TT |
2599 | last_was_structop = 0; |
2600 | saw_name_at_eof = 0; | |
7c8adf68 | 2601 | |
48e32051 TT |
2602 | VEC_free (token_and_value, token_fifo); |
2603 | popping = 0; | |
2604 | obstack_init (&name_obstack); | |
2605 | make_cleanup_obstack_free (&name_obstack); | |
2606 | ||
7c8adf68 TT |
2607 | result = yyparse (); |
2608 | do_cleanups (back_to); | |
2609 | return result; | |
65d12d83 TT |
2610 | } |
2611 | ||
7c8adf68 | 2612 | |
c906108c | 2613 | void |
68c1b02d | 2614 | yyerror (char *msg) |
c906108c | 2615 | { |
665132f9 MS |
2616 | if (prev_lexptr) |
2617 | lexptr = prev_lexptr; | |
2618 | ||
c906108c SS |
2619 | error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr); |
2620 | } |