Commit | Line | Data |
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c906108c | 1 | /* YACC parser for C expressions, for GDB. |
0b302171 JB |
2 | Copyright (C) 1986, 1989-2000, 2003-2004, 2006-2012 Free Software |
3 | Foundation, Inc. | |
c906108c | 4 | |
5b1ba0e5 | 5 | This file is part of GDB. |
c906108c | 6 | |
5b1ba0e5 NS |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
5b1ba0e5 NS |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
5b1ba0e5 NS |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
c906108c SS |
19 | |
20 | /* Parse a C expression from text in a string, | |
21 | and return the result as a struct expression pointer. | |
22 | That structure contains arithmetic operations in reverse polish, | |
23 | with constants represented by operations that are followed by special data. | |
24 | See expression.h for the details of the format. | |
25 | What is important here is that it can be built up sequentially | |
26 | during the process of parsing; the lower levels of the tree always | |
27 | come first in the result. | |
28 | ||
29 | Note that malloc's and realloc's in this file are transformed to | |
30 | xmalloc and xrealloc respectively by the same sed command in the | |
31 | makefile that remaps any other malloc/realloc inserted by the parser | |
32 | generator. Doing this with #defines and trying to control the interaction | |
33 | with include files (<malloc.h> and <stdlib.h> for example) just became | |
34 | too messy, particularly when such includes can be inserted at random | |
35 | times by the parser generator. */ | |
36 | ||
37 | %{ | |
38 | ||
39 | #include "defs.h" | |
40 | #include "gdb_string.h" | |
41 | #include <ctype.h> | |
42 | #include "expression.h" | |
43 | #include "value.h" | |
44 | #include "parser-defs.h" | |
45 | #include "language.h" | |
46 | #include "c-lang.h" | |
47 | #include "bfd.h" /* Required by objfiles.h. */ | |
48 | #include "symfile.h" /* Required by objfiles.h. */ | |
49 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */ | |
234b45d4 | 50 | #include "charset.h" |
fe898f56 | 51 | #include "block.h" |
79c2c32d | 52 | #include "cp-support.h" |
27bc4d80 | 53 | #include "dfp.h" |
7c8adf68 TT |
54 | #include "gdb_assert.h" |
55 | #include "macroscope.h" | |
f2e8016f | 56 | #include "objc-lang.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 | |
a7aa5b8a MK |
107 | #define yyss c_yyss |
108 | #define yysslim c_yysslim | |
109 | #define yyssp c_yyssp | |
110 | #define yystacksize c_yystacksize | |
111 | #define yyvs c_yyvs | |
112 | #define yyvsp c_yyvsp | |
c906108c SS |
113 | |
114 | #ifndef YYDEBUG | |
f461f5cf | 115 | #define YYDEBUG 1 /* Default to yydebug support */ |
c906108c SS |
116 | #endif |
117 | ||
f461f5cf PM |
118 | #define YYFPRINTF parser_fprintf |
119 | ||
a14ed312 | 120 | int yyparse (void); |
c906108c | 121 | |
a14ed312 | 122 | static int yylex (void); |
c906108c | 123 | |
a14ed312 | 124 | void yyerror (char *); |
c906108c SS |
125 | |
126 | %} | |
127 | ||
128 | /* Although the yacc "value" of an expression is not used, | |
129 | since the result is stored in the structure being created, | |
130 | other node types do have values. */ | |
131 | ||
132 | %union | |
133 | { | |
134 | LONGEST lval; | |
135 | struct { | |
136 | LONGEST val; | |
137 | struct type *type; | |
138 | } typed_val_int; | |
139 | struct { | |
140 | DOUBLEST dval; | |
141 | struct type *type; | |
142 | } typed_val_float; | |
27bc4d80 TJB |
143 | struct { |
144 | gdb_byte val[16]; | |
145 | struct type *type; | |
146 | } typed_val_decfloat; | |
c906108c SS |
147 | struct symbol *sym; |
148 | struct type *tval; | |
149 | struct stoken sval; | |
6c7a06a3 | 150 | struct typed_stoken tsval; |
c906108c SS |
151 | struct ttype tsym; |
152 | struct symtoken ssym; | |
153 | int voidval; | |
154 | struct block *bval; | |
155 | enum exp_opcode opcode; | |
156 | struct internalvar *ivar; | |
157 | ||
6c7a06a3 | 158 | struct stoken_vector svec; |
71918a86 | 159 | VEC (type_ptr) *tvec; |
c906108c | 160 | int *ivec; |
fcde5961 TT |
161 | |
162 | struct type_stack *type_stack; | |
f2e8016f TT |
163 | |
164 | struct objc_class_str class; | |
c906108c SS |
165 | } |
166 | ||
167 | %{ | |
168 | /* YYSTYPE gets defined by %union */ | |
a14ed312 | 169 | static int parse_number (char *, int, int, YYSTYPE *); |
66c53f2b | 170 | static struct stoken operator_stoken (const char *); |
e314d629 | 171 | static void check_parameter_typelist (VEC (type_ptr) *); |
c906108c SS |
172 | %} |
173 | ||
174 | %type <voidval> exp exp1 type_exp start variable qualified_name lcurly | |
175 | %type <lval> rcurly | |
48e32051 | 176 | %type <tval> type typebase |
a6fb9c08 | 177 | %type <tvec> nonempty_typelist func_mod parameter_typelist |
c906108c SS |
178 | /* %type <bval> block */ |
179 | ||
180 | /* Fancy type parsing. */ | |
c906108c SS |
181 | %type <tval> ptype |
182 | %type <lval> array_mod | |
95c391b6 | 183 | %type <tval> conversion_type_id |
c906108c | 184 | |
fcde5961 TT |
185 | %type <type_stack> ptr_operator_ts abs_decl direct_abs_decl |
186 | ||
c906108c SS |
187 | %token <typed_val_int> INT |
188 | %token <typed_val_float> FLOAT | |
27bc4d80 | 189 | %token <typed_val_decfloat> DECFLOAT |
c906108c SS |
190 | |
191 | /* Both NAME and TYPENAME tokens represent symbols in the input, | |
192 | and both convey their data as strings. | |
193 | But a TYPENAME is a string that happens to be defined as a typedef | |
194 | or builtin type name (such as int or char) | |
195 | and a NAME is any other symbol. | |
196 | Contexts where this distinction is not important can use the | |
197 | nonterminal "name", which matches either NAME or TYPENAME. */ | |
198 | ||
6c7a06a3 | 199 | %token <tsval> STRING |
f2e8016f TT |
200 | %token <sval> NSSTRING /* ObjC Foundation "NSString" literal */ |
201 | %token SELECTOR /* ObjC "@selector" pseudo-operator */ | |
6c7a06a3 | 202 | %token <tsval> CHAR |
c906108c | 203 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ |
7322dca9 | 204 | %token <ssym> UNKNOWN_CPP_NAME |
65d12d83 | 205 | %token <voidval> COMPLETE |
c906108c | 206 | %token <tsym> TYPENAME |
f2e8016f | 207 | %token <class> CLASSNAME /* ObjC Class name */ |
6c7a06a3 TT |
208 | %type <sval> name |
209 | %type <svec> string_exp | |
c906108c SS |
210 | %type <ssym> name_not_typename |
211 | %type <tsym> typename | |
212 | ||
f2e8016f TT |
213 | /* This is like a '[' token, but is only generated when parsing |
214 | Objective C. This lets us reuse the same parser without | |
215 | erroneously parsing ObjC-specific expressions in C. */ | |
216 | %token OBJC_LBRAC | |
217 | ||
c906108c SS |
218 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, |
219 | but which would parse as a valid number in the current input radix. | |
220 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
221 | turned into a name or into a number. */ | |
222 | ||
223 | %token <ssym> NAME_OR_INT | |
224 | ||
66c53f2b | 225 | %token OPERATOR |
c906108c SS |
226 | %token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON |
227 | %token TEMPLATE | |
228 | %token ERROR | |
66c53f2b KS |
229 | %token NEW DELETE |
230 | %type <sval> operator | |
4e8f195d | 231 | %token REINTERPRET_CAST DYNAMIC_CAST STATIC_CAST CONST_CAST |
941b2081 | 232 | %token ENTRY |
608b4967 TT |
233 | %token TYPEOF |
234 | %token DECLTYPE | |
c906108c SS |
235 | |
236 | /* Special type cases, put in to allow the parser to distinguish different | |
237 | legal basetypes. */ | |
238 | %token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD DOUBLE_KEYWORD | |
239 | ||
48e32051 | 240 | %token <sval> VARIABLE |
c906108c SS |
241 | |
242 | %token <opcode> ASSIGN_MODIFY | |
243 | ||
244 | /* C++ */ | |
c906108c SS |
245 | %token TRUEKEYWORD |
246 | %token FALSEKEYWORD | |
247 | ||
248 | ||
249 | %left ',' | |
250 | %left ABOVE_COMMA | |
251 | %right '=' ASSIGN_MODIFY | |
252 | %right '?' | |
253 | %left OROR | |
254 | %left ANDAND | |
255 | %left '|' | |
256 | %left '^' | |
257 | %left '&' | |
258 | %left EQUAL NOTEQUAL | |
259 | %left '<' '>' LEQ GEQ | |
260 | %left LSH RSH | |
261 | %left '@' | |
262 | %left '+' '-' | |
263 | %left '*' '/' '%' | |
264 | %right UNARY INCREMENT DECREMENT | |
f2e8016f | 265 | %right ARROW ARROW_STAR '.' DOT_STAR '[' OBJC_LBRAC '(' |
c906108c SS |
266 | %token <ssym> BLOCKNAME |
267 | %token <bval> FILENAME | |
268 | %type <bval> block | |
269 | %left COLONCOLON | |
270 | ||
a6fb9c08 TT |
271 | %token DOTDOTDOT |
272 | ||
c906108c SS |
273 | \f |
274 | %% | |
275 | ||
276 | start : exp1 | |
277 | | type_exp | |
278 | ; | |
279 | ||
280 | type_exp: type | |
281 | { write_exp_elt_opcode(OP_TYPE); | |
282 | write_exp_elt_type($1); | |
283 | write_exp_elt_opcode(OP_TYPE);} | |
608b4967 TT |
284 | | TYPEOF '(' exp ')' |
285 | { | |
286 | write_exp_elt_opcode (OP_TYPEOF); | |
287 | } | |
288 | | TYPEOF '(' type ')' | |
289 | { | |
290 | write_exp_elt_opcode (OP_TYPE); | |
291 | write_exp_elt_type ($3); | |
292 | write_exp_elt_opcode (OP_TYPE); | |
293 | } | |
294 | | DECLTYPE '(' exp ')' | |
295 | { | |
296 | write_exp_elt_opcode (OP_DECLTYPE); | |
297 | } | |
c906108c SS |
298 | ; |
299 | ||
300 | /* Expressions, including the comma operator. */ | |
301 | exp1 : exp | |
302 | | exp1 ',' exp | |
303 | { write_exp_elt_opcode (BINOP_COMMA); } | |
304 | ; | |
305 | ||
306 | /* Expressions, not including the comma operator. */ | |
307 | exp : '*' exp %prec UNARY | |
308 | { write_exp_elt_opcode (UNOP_IND); } | |
ef944135 | 309 | ; |
c906108c SS |
310 | |
311 | exp : '&' exp %prec UNARY | |
312 | { write_exp_elt_opcode (UNOP_ADDR); } | |
ef944135 | 313 | ; |
c906108c SS |
314 | |
315 | exp : '-' exp %prec UNARY | |
316 | { write_exp_elt_opcode (UNOP_NEG); } | |
317 | ; | |
318 | ||
36e9969c NS |
319 | exp : '+' exp %prec UNARY |
320 | { write_exp_elt_opcode (UNOP_PLUS); } | |
321 | ; | |
322 | ||
c906108c SS |
323 | exp : '!' exp %prec UNARY |
324 | { write_exp_elt_opcode (UNOP_LOGICAL_NOT); } | |
325 | ; | |
326 | ||
327 | exp : '~' exp %prec UNARY | |
328 | { write_exp_elt_opcode (UNOP_COMPLEMENT); } | |
329 | ; | |
330 | ||
331 | exp : INCREMENT exp %prec UNARY | |
332 | { write_exp_elt_opcode (UNOP_PREINCREMENT); } | |
333 | ; | |
334 | ||
335 | exp : DECREMENT exp %prec UNARY | |
336 | { write_exp_elt_opcode (UNOP_PREDECREMENT); } | |
337 | ; | |
338 | ||
339 | exp : exp INCREMENT %prec UNARY | |
340 | { write_exp_elt_opcode (UNOP_POSTINCREMENT); } | |
341 | ; | |
342 | ||
343 | exp : exp DECREMENT %prec UNARY | |
344 | { write_exp_elt_opcode (UNOP_POSTDECREMENT); } | |
345 | ; | |
346 | ||
347 | exp : SIZEOF exp %prec UNARY | |
348 | { write_exp_elt_opcode (UNOP_SIZEOF); } | |
349 | ; | |
350 | ||
351 | exp : exp ARROW name | |
352 | { write_exp_elt_opcode (STRUCTOP_PTR); | |
353 | write_exp_string ($3); | |
354 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
355 | ; | |
356 | ||
65d12d83 TT |
357 | exp : exp ARROW name COMPLETE |
358 | { mark_struct_expression (); | |
359 | write_exp_elt_opcode (STRUCTOP_PTR); | |
360 | write_exp_string ($3); | |
361 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
362 | ; | |
363 | ||
364 | exp : exp ARROW COMPLETE | |
365 | { struct stoken s; | |
366 | mark_struct_expression (); | |
367 | write_exp_elt_opcode (STRUCTOP_PTR); | |
368 | s.ptr = ""; | |
369 | s.length = 0; | |
370 | write_exp_string (s); | |
371 | write_exp_elt_opcode (STRUCTOP_PTR); } | |
372 | ; | |
373 | ||
c906108c SS |
374 | exp : exp ARROW qualified_name |
375 | { /* exp->type::name becomes exp->*(&type::name) */ | |
376 | /* Note: this doesn't work if name is a | |
377 | static member! FIXME */ | |
378 | write_exp_elt_opcode (UNOP_ADDR); | |
379 | write_exp_elt_opcode (STRUCTOP_MPTR); } | |
380 | ; | |
381 | ||
c1af96a0 | 382 | exp : exp ARROW_STAR exp |
c906108c SS |
383 | { write_exp_elt_opcode (STRUCTOP_MPTR); } |
384 | ; | |
385 | ||
386 | exp : exp '.' name | |
387 | { write_exp_elt_opcode (STRUCTOP_STRUCT); | |
388 | write_exp_string ($3); | |
389 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
390 | ; | |
391 | ||
65d12d83 TT |
392 | exp : exp '.' name COMPLETE |
393 | { mark_struct_expression (); | |
394 | write_exp_elt_opcode (STRUCTOP_STRUCT); | |
395 | write_exp_string ($3); | |
396 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
397 | ; | |
398 | ||
399 | exp : exp '.' COMPLETE | |
400 | { struct stoken s; | |
401 | mark_struct_expression (); | |
402 | write_exp_elt_opcode (STRUCTOP_STRUCT); | |
403 | s.ptr = ""; | |
404 | s.length = 0; | |
405 | write_exp_string (s); | |
406 | write_exp_elt_opcode (STRUCTOP_STRUCT); } | |
407 | ; | |
408 | ||
c906108c SS |
409 | exp : exp '.' qualified_name |
410 | { /* exp.type::name becomes exp.*(&type::name) */ | |
411 | /* Note: this doesn't work if name is a | |
412 | static member! FIXME */ | |
413 | write_exp_elt_opcode (UNOP_ADDR); | |
414 | write_exp_elt_opcode (STRUCTOP_MEMBER); } | |
415 | ; | |
416 | ||
c1af96a0 | 417 | exp : exp DOT_STAR exp |
c906108c SS |
418 | { write_exp_elt_opcode (STRUCTOP_MEMBER); } |
419 | ; | |
420 | ||
421 | exp : exp '[' exp1 ']' | |
422 | { write_exp_elt_opcode (BINOP_SUBSCRIPT); } | |
423 | ; | |
424 | ||
f2e8016f TT |
425 | exp : exp OBJC_LBRAC exp1 ']' |
426 | { write_exp_elt_opcode (BINOP_SUBSCRIPT); } | |
427 | ; | |
428 | ||
429 | /* | |
430 | * The rules below parse ObjC message calls of the form: | |
431 | * '[' target selector {':' argument}* ']' | |
432 | */ | |
433 | ||
434 | exp : OBJC_LBRAC TYPENAME | |
435 | { | |
436 | CORE_ADDR class; | |
437 | ||
438 | class = lookup_objc_class (parse_gdbarch, | |
439 | copy_name ($2.stoken)); | |
440 | if (class == 0) | |
441 | error (_("%s is not an ObjC Class"), | |
442 | copy_name ($2.stoken)); | |
443 | write_exp_elt_opcode (OP_LONG); | |
444 | write_exp_elt_type (parse_type->builtin_int); | |
445 | write_exp_elt_longcst ((LONGEST) class); | |
446 | write_exp_elt_opcode (OP_LONG); | |
447 | start_msglist(); | |
448 | } | |
449 | msglist ']' | |
450 | { write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
451 | end_msglist(); | |
452 | write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
453 | } | |
454 | ; | |
455 | ||
456 | exp : OBJC_LBRAC CLASSNAME | |
457 | { | |
458 | write_exp_elt_opcode (OP_LONG); | |
459 | write_exp_elt_type (parse_type->builtin_int); | |
460 | write_exp_elt_longcst ((LONGEST) $2.class); | |
461 | write_exp_elt_opcode (OP_LONG); | |
462 | start_msglist(); | |
463 | } | |
464 | msglist ']' | |
465 | { write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
466 | end_msglist(); | |
467 | write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
468 | } | |
469 | ; | |
470 | ||
471 | exp : OBJC_LBRAC exp | |
472 | { start_msglist(); } | |
473 | msglist ']' | |
474 | { write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
475 | end_msglist(); | |
476 | write_exp_elt_opcode (OP_OBJC_MSGCALL); | |
477 | } | |
478 | ; | |
479 | ||
480 | msglist : name | |
481 | { add_msglist(&$1, 0); } | |
482 | | msgarglist | |
483 | ; | |
484 | ||
485 | msgarglist : msgarg | |
486 | | msgarglist msgarg | |
487 | ; | |
488 | ||
489 | msgarg : name ':' exp | |
490 | { add_msglist(&$1, 1); } | |
491 | | ':' exp /* Unnamed arg. */ | |
492 | { add_msglist(0, 1); } | |
493 | | ',' exp /* Variable number of args. */ | |
494 | { add_msglist(0, 0); } | |
495 | ; | |
496 | ||
c906108c SS |
497 | exp : exp '(' |
498 | /* This is to save the value of arglist_len | |
499 | being accumulated by an outer function call. */ | |
500 | { start_arglist (); } | |
501 | arglist ')' %prec ARROW | |
502 | { write_exp_elt_opcode (OP_FUNCALL); | |
503 | write_exp_elt_longcst ((LONGEST) end_arglist ()); | |
504 | write_exp_elt_opcode (OP_FUNCALL); } | |
505 | ; | |
506 | ||
941b2081 | 507 | exp : UNKNOWN_CPP_NAME '(' |
7322dca9 SW |
508 | { |
509 | /* This could potentially be a an argument defined | |
510 | lookup function (Koenig). */ | |
511 | write_exp_elt_opcode (OP_ADL_FUNC); | |
512 | write_exp_elt_block (expression_context_block); | |
513 | write_exp_elt_sym (NULL); /* Placeholder. */ | |
514 | write_exp_string ($1.stoken); | |
515 | write_exp_elt_opcode (OP_ADL_FUNC); | |
516 | ||
517 | /* This is to save the value of arglist_len | |
518 | being accumulated by an outer function call. */ | |
519 | ||
520 | start_arglist (); | |
521 | } | |
522 | arglist ')' %prec ARROW | |
523 | { | |
524 | write_exp_elt_opcode (OP_FUNCALL); | |
525 | write_exp_elt_longcst ((LONGEST) end_arglist ()); | |
526 | write_exp_elt_opcode (OP_FUNCALL); | |
527 | } | |
528 | ; | |
529 | ||
c906108c SS |
530 | lcurly : '{' |
531 | { start_arglist (); } | |
532 | ; | |
533 | ||
534 | arglist : | |
535 | ; | |
536 | ||
537 | arglist : exp | |
538 | { arglist_len = 1; } | |
539 | ; | |
540 | ||
541 | arglist : arglist ',' exp %prec ABOVE_COMMA | |
542 | { arglist_len++; } | |
543 | ; | |
544 | ||
a6fb9c08 | 545 | exp : exp '(' parameter_typelist ')' const_or_volatile |
072bba3b | 546 | { int i; |
71918a86 TT |
547 | VEC (type_ptr) *type_list = $3; |
548 | struct type *type_elt; | |
549 | LONGEST len = VEC_length (type_ptr, type_list); | |
550 | ||
072bba3b | 551 | write_exp_elt_opcode (TYPE_INSTANCE); |
71918a86 TT |
552 | write_exp_elt_longcst (len); |
553 | for (i = 0; | |
554 | VEC_iterate (type_ptr, type_list, i, type_elt); | |
555 | ++i) | |
556 | write_exp_elt_type (type_elt); | |
557 | write_exp_elt_longcst(len); | |
072bba3b | 558 | write_exp_elt_opcode (TYPE_INSTANCE); |
71918a86 | 559 | VEC_free (type_ptr, type_list); |
072bba3b KS |
560 | } |
561 | ; | |
562 | ||
c906108c SS |
563 | rcurly : '}' |
564 | { $$ = end_arglist () - 1; } | |
565 | ; | |
566 | exp : lcurly arglist rcurly %prec ARROW | |
567 | { write_exp_elt_opcode (OP_ARRAY); | |
568 | write_exp_elt_longcst ((LONGEST) 0); | |
569 | write_exp_elt_longcst ((LONGEST) $3); | |
570 | write_exp_elt_opcode (OP_ARRAY); } | |
571 | ; | |
572 | ||
9eaf6705 TT |
573 | exp : lcurly type_exp rcurly exp %prec UNARY |
574 | { write_exp_elt_opcode (UNOP_MEMVAL_TYPE); } | |
c906108c SS |
575 | ; |
576 | ||
9eaf6705 TT |
577 | exp : '(' type_exp ')' exp %prec UNARY |
578 | { write_exp_elt_opcode (UNOP_CAST_TYPE); } | |
c906108c SS |
579 | ; |
580 | ||
581 | exp : '(' exp1 ')' | |
582 | { } | |
583 | ; | |
584 | ||
585 | /* Binary operators in order of decreasing precedence. */ | |
586 | ||
587 | exp : exp '@' exp | |
588 | { write_exp_elt_opcode (BINOP_REPEAT); } | |
589 | ; | |
590 | ||
591 | exp : exp '*' exp | |
592 | { write_exp_elt_opcode (BINOP_MUL); } | |
593 | ; | |
594 | ||
595 | exp : exp '/' exp | |
596 | { write_exp_elt_opcode (BINOP_DIV); } | |
597 | ; | |
598 | ||
599 | exp : exp '%' exp | |
600 | { write_exp_elt_opcode (BINOP_REM); } | |
601 | ; | |
602 | ||
603 | exp : exp '+' exp | |
604 | { write_exp_elt_opcode (BINOP_ADD); } | |
605 | ; | |
606 | ||
607 | exp : exp '-' exp | |
608 | { write_exp_elt_opcode (BINOP_SUB); } | |
609 | ; | |
610 | ||
611 | exp : exp LSH exp | |
612 | { write_exp_elt_opcode (BINOP_LSH); } | |
613 | ; | |
614 | ||
615 | exp : exp RSH exp | |
616 | { write_exp_elt_opcode (BINOP_RSH); } | |
617 | ; | |
618 | ||
619 | exp : exp EQUAL exp | |
620 | { write_exp_elt_opcode (BINOP_EQUAL); } | |
621 | ; | |
622 | ||
623 | exp : exp NOTEQUAL exp | |
624 | { write_exp_elt_opcode (BINOP_NOTEQUAL); } | |
625 | ; | |
626 | ||
627 | exp : exp LEQ exp | |
628 | { write_exp_elt_opcode (BINOP_LEQ); } | |
629 | ; | |
630 | ||
631 | exp : exp GEQ exp | |
632 | { write_exp_elt_opcode (BINOP_GEQ); } | |
633 | ; | |
634 | ||
635 | exp : exp '<' exp | |
636 | { write_exp_elt_opcode (BINOP_LESS); } | |
637 | ; | |
638 | ||
639 | exp : exp '>' exp | |
640 | { write_exp_elt_opcode (BINOP_GTR); } | |
641 | ; | |
642 | ||
643 | exp : exp '&' exp | |
644 | { write_exp_elt_opcode (BINOP_BITWISE_AND); } | |
645 | ; | |
646 | ||
647 | exp : exp '^' exp | |
648 | { write_exp_elt_opcode (BINOP_BITWISE_XOR); } | |
649 | ; | |
650 | ||
651 | exp : exp '|' exp | |
652 | { write_exp_elt_opcode (BINOP_BITWISE_IOR); } | |
653 | ; | |
654 | ||
655 | exp : exp ANDAND exp | |
656 | { write_exp_elt_opcode (BINOP_LOGICAL_AND); } | |
657 | ; | |
658 | ||
659 | exp : exp OROR exp | |
660 | { write_exp_elt_opcode (BINOP_LOGICAL_OR); } | |
661 | ; | |
662 | ||
663 | exp : exp '?' exp ':' exp %prec '?' | |
664 | { write_exp_elt_opcode (TERNOP_COND); } | |
665 | ; | |
666 | ||
667 | exp : exp '=' exp | |
668 | { write_exp_elt_opcode (BINOP_ASSIGN); } | |
669 | ; | |
670 | ||
671 | exp : exp ASSIGN_MODIFY exp | |
672 | { write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); | |
673 | write_exp_elt_opcode ($2); | |
674 | write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); } | |
675 | ; | |
676 | ||
677 | exp : INT | |
678 | { write_exp_elt_opcode (OP_LONG); | |
679 | write_exp_elt_type ($1.type); | |
680 | write_exp_elt_longcst ((LONGEST)($1.val)); | |
681 | write_exp_elt_opcode (OP_LONG); } | |
682 | ; | |
683 | ||
6c7a06a3 TT |
684 | exp : CHAR |
685 | { | |
686 | struct stoken_vector vec; | |
687 | vec.len = 1; | |
688 | vec.tokens = &$1; | |
689 | write_exp_string_vector ($1.type, &vec); | |
690 | } | |
691 | ; | |
692 | ||
c906108c SS |
693 | exp : NAME_OR_INT |
694 | { YYSTYPE val; | |
695 | parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val); | |
696 | write_exp_elt_opcode (OP_LONG); | |
697 | write_exp_elt_type (val.typed_val_int.type); | |
698 | write_exp_elt_longcst ((LONGEST)val.typed_val_int.val); | |
699 | write_exp_elt_opcode (OP_LONG); | |
700 | } | |
701 | ; | |
702 | ||
703 | ||
704 | exp : FLOAT | |
705 | { write_exp_elt_opcode (OP_DOUBLE); | |
706 | write_exp_elt_type ($1.type); | |
707 | write_exp_elt_dblcst ($1.dval); | |
708 | write_exp_elt_opcode (OP_DOUBLE); } | |
709 | ; | |
710 | ||
27bc4d80 TJB |
711 | exp : DECFLOAT |
712 | { write_exp_elt_opcode (OP_DECFLOAT); | |
713 | write_exp_elt_type ($1.type); | |
714 | write_exp_elt_decfloatcst ($1.val); | |
715 | write_exp_elt_opcode (OP_DECFLOAT); } | |
716 | ; | |
717 | ||
c906108c SS |
718 | exp : variable |
719 | ; | |
720 | ||
721 | exp : VARIABLE | |
48e32051 TT |
722 | { |
723 | write_dollar_variable ($1); | |
724 | } | |
c906108c SS |
725 | ; |
726 | ||
f2e8016f TT |
727 | exp : SELECTOR '(' name ')' |
728 | { | |
729 | write_exp_elt_opcode (OP_OBJC_SELECTOR); | |
730 | write_exp_string ($3); | |
731 | write_exp_elt_opcode (OP_OBJC_SELECTOR); } | |
732 | ; | |
733 | ||
c906108c SS |
734 | exp : SIZEOF '(' type ')' %prec UNARY |
735 | { write_exp_elt_opcode (OP_LONG); | |
f4b8a18d KW |
736 | write_exp_elt_type (lookup_signed_typename |
737 | (parse_language, parse_gdbarch, | |
738 | "int")); | |
c906108c SS |
739 | CHECK_TYPEDEF ($3); |
740 | write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3)); | |
741 | write_exp_elt_opcode (OP_LONG); } | |
742 | ; | |
743 | ||
9eaf6705 TT |
744 | exp : REINTERPRET_CAST '<' type_exp '>' '(' exp ')' %prec UNARY |
745 | { write_exp_elt_opcode (UNOP_REINTERPRET_CAST); } | |
4e8f195d TT |
746 | ; |
747 | ||
9eaf6705 TT |
748 | exp : STATIC_CAST '<' type_exp '>' '(' exp ')' %prec UNARY |
749 | { write_exp_elt_opcode (UNOP_CAST_TYPE); } | |
4e8f195d TT |
750 | ; |
751 | ||
9eaf6705 TT |
752 | exp : DYNAMIC_CAST '<' type_exp '>' '(' exp ')' %prec UNARY |
753 | { write_exp_elt_opcode (UNOP_DYNAMIC_CAST); } | |
4e8f195d TT |
754 | ; |
755 | ||
9eaf6705 | 756 | exp : CONST_CAST '<' type_exp '>' '(' exp ')' %prec UNARY |
4e8f195d TT |
757 | { /* We could do more error checking here, but |
758 | it doesn't seem worthwhile. */ | |
9eaf6705 | 759 | write_exp_elt_opcode (UNOP_CAST_TYPE); } |
4e8f195d TT |
760 | ; |
761 | ||
c209f847 TT |
762 | string_exp: |
763 | STRING | |
764 | { | |
765 | /* We copy the string here, and not in the | |
766 | lexer, to guarantee that we do not leak a | |
767 | string. Note that we follow the | |
768 | NUL-termination convention of the | |
769 | lexer. */ | |
6c7a06a3 TT |
770 | struct typed_stoken *vec = XNEW (struct typed_stoken); |
771 | $$.len = 1; | |
772 | $$.tokens = vec; | |
773 | ||
774 | vec->type = $1.type; | |
775 | vec->length = $1.length; | |
776 | vec->ptr = malloc ($1.length + 1); | |
777 | memcpy (vec->ptr, $1.ptr, $1.length + 1); | |
c209f847 TT |
778 | } |
779 | ||
780 | | string_exp STRING | |
781 | { | |
782 | /* Note that we NUL-terminate here, but just | |
783 | for convenience. */ | |
6c7a06a3 TT |
784 | char *p; |
785 | ++$$.len; | |
786 | $$.tokens = realloc ($$.tokens, | |
787 | $$.len * sizeof (struct typed_stoken)); | |
788 | ||
789 | p = malloc ($2.length + 1); | |
790 | memcpy (p, $2.ptr, $2.length + 1); | |
791 | ||
792 | $$.tokens[$$.len - 1].type = $2.type; | |
793 | $$.tokens[$$.len - 1].length = $2.length; | |
794 | $$.tokens[$$.len - 1].ptr = p; | |
c209f847 TT |
795 | } |
796 | ; | |
797 | ||
798 | exp : string_exp | |
6c7a06a3 TT |
799 | { |
800 | int i; | |
801 | enum c_string_type type = C_STRING; | |
802 | ||
803 | for (i = 0; i < $1.len; ++i) | |
c906108c | 804 | { |
6c7a06a3 TT |
805 | switch ($1.tokens[i].type) |
806 | { | |
807 | case C_STRING: | |
808 | break; | |
809 | case C_WIDE_STRING: | |
810 | case C_STRING_16: | |
811 | case C_STRING_32: | |
812 | if (type != C_STRING | |
813 | && type != $1.tokens[i].type) | |
001083c6 | 814 | error (_("Undefined string concatenation.")); |
6c7a06a3 TT |
815 | type = $1.tokens[i].type; |
816 | break; | |
817 | default: | |
818 | /* internal error */ | |
819 | internal_error (__FILE__, __LINE__, | |
820 | "unrecognized type in string concatenation"); | |
821 | } | |
c906108c | 822 | } |
6c7a06a3 TT |
823 | |
824 | write_exp_string_vector (type, &$1); | |
825 | for (i = 0; i < $1.len; ++i) | |
826 | free ($1.tokens[i].ptr); | |
827 | free ($1.tokens); | |
c209f847 | 828 | } |
c906108c SS |
829 | ; |
830 | ||
f2e8016f TT |
831 | exp : NSSTRING /* ObjC NextStep NSString constant |
832 | * of the form '@' '"' string '"'. | |
833 | */ | |
834 | { write_exp_elt_opcode (OP_OBJC_NSSTRING); | |
835 | write_exp_string ($1); | |
836 | write_exp_elt_opcode (OP_OBJC_NSSTRING); } | |
837 | ; | |
838 | ||
c906108c | 839 | /* C++. */ |
c906108c SS |
840 | exp : TRUEKEYWORD |
841 | { write_exp_elt_opcode (OP_LONG); | |
3e79cecf | 842 | write_exp_elt_type (parse_type->builtin_bool); |
c906108c SS |
843 | write_exp_elt_longcst ((LONGEST) 1); |
844 | write_exp_elt_opcode (OP_LONG); } | |
845 | ; | |
846 | ||
847 | exp : FALSEKEYWORD | |
848 | { write_exp_elt_opcode (OP_LONG); | |
3e79cecf | 849 | write_exp_elt_type (parse_type->builtin_bool); |
c906108c SS |
850 | write_exp_elt_longcst ((LONGEST) 0); |
851 | write_exp_elt_opcode (OP_LONG); } | |
852 | ; | |
853 | ||
854 | /* end of C++. */ | |
855 | ||
856 | block : BLOCKNAME | |
857 | { | |
858 | if ($1.sym) | |
859 | $$ = SYMBOL_BLOCK_VALUE ($1.sym); | |
860 | else | |
001083c6 | 861 | error (_("No file or function \"%s\"."), |
c906108c SS |
862 | copy_name ($1.stoken)); |
863 | } | |
864 | | FILENAME | |
865 | { | |
866 | $$ = $1; | |
867 | } | |
868 | ; | |
869 | ||
870 | block : block COLONCOLON name | |
871 | { struct symbol *tem | |
872 | = lookup_symbol (copy_name ($3), $1, | |
2570f2b7 | 873 | VAR_DOMAIN, (int *) NULL); |
c906108c | 874 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) |
001083c6 | 875 | error (_("No function \"%s\" in specified context."), |
c906108c SS |
876 | copy_name ($3)); |
877 | $$ = SYMBOL_BLOCK_VALUE (tem); } | |
878 | ; | |
879 | ||
941b2081 | 880 | variable: name_not_typename ENTRY |
36b11add JK |
881 | { struct symbol *sym = $1.sym; |
882 | ||
883 | if (sym == NULL || !SYMBOL_IS_ARGUMENT (sym) | |
884 | || !symbol_read_needs_frame (sym)) | |
885 | error (_("@entry can be used only for function " | |
886 | "parameters, not for \"%s\""), | |
887 | copy_name ($1.stoken)); | |
888 | ||
889 | write_exp_elt_opcode (OP_VAR_ENTRY_VALUE); | |
890 | write_exp_elt_sym (sym); | |
891 | write_exp_elt_opcode (OP_VAR_ENTRY_VALUE); | |
892 | } | |
893 | ; | |
894 | ||
c906108c SS |
895 | variable: block COLONCOLON name |
896 | { struct symbol *sym; | |
897 | sym = lookup_symbol (copy_name ($3), $1, | |
2570f2b7 | 898 | VAR_DOMAIN, (int *) NULL); |
c906108c | 899 | if (sym == 0) |
001083c6 | 900 | error (_("No symbol \"%s\" in specified context."), |
c906108c | 901 | copy_name ($3)); |
72384ba3 PH |
902 | if (symbol_read_needs_frame (sym)) |
903 | { | |
904 | if (innermost_block == 0 | |
905 | || contained_in (block_found, | |
906 | innermost_block)) | |
907 | innermost_block = block_found; | |
908 | } | |
c906108c SS |
909 | |
910 | write_exp_elt_opcode (OP_VAR_VALUE); | |
911 | /* block_found is set by lookup_symbol. */ | |
912 | write_exp_elt_block (block_found); | |
913 | write_exp_elt_sym (sym); | |
914 | write_exp_elt_opcode (OP_VAR_VALUE); } | |
915 | ; | |
916 | ||
48e32051 | 917 | qualified_name: TYPENAME COLONCOLON name |
c906108c | 918 | { |
48e32051 | 919 | struct type *type = $1.type; |
e8269d5f | 920 | CHECK_TYPEDEF (type); |
c906108c | 921 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
79c2c32d DC |
922 | && TYPE_CODE (type) != TYPE_CODE_UNION |
923 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
001083c6 | 924 | error (_("`%s' is not defined as an aggregate type."), |
c906108c SS |
925 | TYPE_NAME (type)); |
926 | ||
927 | write_exp_elt_opcode (OP_SCOPE); | |
928 | write_exp_elt_type (type); | |
929 | write_exp_string ($3); | |
930 | write_exp_elt_opcode (OP_SCOPE); | |
931 | } | |
48e32051 | 932 | | TYPENAME COLONCOLON '~' name |
c906108c | 933 | { |
48e32051 | 934 | struct type *type = $1.type; |
c906108c | 935 | struct stoken tmp_token; |
e8269d5f | 936 | CHECK_TYPEDEF (type); |
c906108c | 937 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
79c2c32d DC |
938 | && TYPE_CODE (type) != TYPE_CODE_UNION |
939 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
001083c6 | 940 | error (_("`%s' is not defined as an aggregate type."), |
c906108c SS |
941 | TYPE_NAME (type)); |
942 | ||
943 | tmp_token.ptr = (char*) alloca ($4.length + 2); | |
944 | tmp_token.length = $4.length + 1; | |
945 | tmp_token.ptr[0] = '~'; | |
946 | memcpy (tmp_token.ptr+1, $4.ptr, $4.length); | |
947 | tmp_token.ptr[tmp_token.length] = 0; | |
948 | ||
949 | /* Check for valid destructor name. */ | |
d8228535 | 950 | destructor_name_p (tmp_token.ptr, $1.type); |
c906108c SS |
951 | write_exp_elt_opcode (OP_SCOPE); |
952 | write_exp_elt_type (type); | |
953 | write_exp_string (tmp_token); | |
954 | write_exp_elt_opcode (OP_SCOPE); | |
955 | } | |
48e32051 TT |
956 | | TYPENAME COLONCOLON name COLONCOLON name |
957 | { | |
958 | char *copy = copy_name ($3); | |
959 | error (_("No type \"%s\" within class " | |
960 | "or namespace \"%s\"."), | |
961 | copy, TYPE_NAME ($1.type)); | |
962 | } | |
c906108c SS |
963 | ; |
964 | ||
965 | variable: qualified_name | |
48e32051 | 966 | | COLONCOLON name_not_typename |
c906108c | 967 | { |
48e32051 | 968 | char *name = copy_name ($2.stoken); |
c906108c SS |
969 | struct symbol *sym; |
970 | struct minimal_symbol *msymbol; | |
971 | ||
972 | sym = | |
973 | lookup_symbol (name, (const struct block *) NULL, | |
2570f2b7 | 974 | VAR_DOMAIN, (int *) NULL); |
c906108c SS |
975 | if (sym) |
976 | { | |
977 | write_exp_elt_opcode (OP_VAR_VALUE); | |
978 | write_exp_elt_block (NULL); | |
979 | write_exp_elt_sym (sym); | |
980 | write_exp_elt_opcode (OP_VAR_VALUE); | |
981 | break; | |
982 | } | |
983 | ||
984 | msymbol = lookup_minimal_symbol (name, NULL, NULL); | |
985 | if (msymbol != NULL) | |
c841afd5 UW |
986 | write_exp_msymbol (msymbol); |
987 | else if (!have_full_symbols () && !have_partial_symbols ()) | |
001083c6 | 988 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 989 | else |
001083c6 | 990 | error (_("No symbol \"%s\" in current context."), name); |
c906108c SS |
991 | } |
992 | ; | |
993 | ||
994 | variable: name_not_typename | |
995 | { struct symbol *sym = $1.sym; | |
996 | ||
997 | if (sym) | |
998 | { | |
999 | if (symbol_read_needs_frame (sym)) | |
1000 | { | |
5aafa1cc PM |
1001 | if (innermost_block == 0 |
1002 | || contained_in (block_found, | |
1003 | innermost_block)) | |
c906108c SS |
1004 | innermost_block = block_found; |
1005 | } | |
1006 | ||
1007 | write_exp_elt_opcode (OP_VAR_VALUE); | |
1008 | /* We want to use the selected frame, not | |
1009 | another more inner frame which happens to | |
1010 | be in the same block. */ | |
1011 | write_exp_elt_block (NULL); | |
1012 | write_exp_elt_sym (sym); | |
1013 | write_exp_elt_opcode (OP_VAR_VALUE); | |
1014 | } | |
1015 | else if ($1.is_a_field_of_this) | |
1016 | { | |
1017 | /* C++: it hangs off of `this'. Must | |
1018 | not inadvertently convert from a method call | |
1019 | to data ref. */ | |
5aafa1cc PM |
1020 | if (innermost_block == 0 |
1021 | || contained_in (block_found, | |
1022 | innermost_block)) | |
c906108c SS |
1023 | innermost_block = block_found; |
1024 | write_exp_elt_opcode (OP_THIS); | |
1025 | write_exp_elt_opcode (OP_THIS); | |
1026 | write_exp_elt_opcode (STRUCTOP_PTR); | |
1027 | write_exp_string ($1.stoken); | |
1028 | write_exp_elt_opcode (STRUCTOP_PTR); | |
1029 | } | |
1030 | else | |
1031 | { | |
1032 | struct minimal_symbol *msymbol; | |
710122da | 1033 | char *arg = copy_name ($1.stoken); |
c906108c SS |
1034 | |
1035 | msymbol = | |
1036 | lookup_minimal_symbol (arg, NULL, NULL); | |
1037 | if (msymbol != NULL) | |
c841afd5 | 1038 | write_exp_msymbol (msymbol); |
c906108c | 1039 | else if (!have_full_symbols () && !have_partial_symbols ()) |
001083c6 | 1040 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 1041 | else |
001083c6 | 1042 | error (_("No symbol \"%s\" in current context."), |
c906108c SS |
1043 | copy_name ($1.stoken)); |
1044 | } | |
1045 | } | |
1046 | ; | |
1047 | ||
47663de5 | 1048 | space_identifier : '@' NAME |
95c391b6 | 1049 | { insert_type_address_space (copy_name ($2.stoken)); } |
47663de5 | 1050 | ; |
c906108c | 1051 | |
47663de5 MS |
1052 | const_or_volatile: const_or_volatile_noopt |
1053 | | | |
c906108c | 1054 | ; |
47663de5 MS |
1055 | |
1056 | cv_with_space_id : const_or_volatile space_identifier const_or_volatile | |
56e2d25a | 1057 | ; |
47663de5 MS |
1058 | |
1059 | const_or_volatile_or_space_identifier_noopt: cv_with_space_id | |
1060 | | const_or_volatile_noopt | |
56e2d25a | 1061 | ; |
47663de5 MS |
1062 | |
1063 | const_or_volatile_or_space_identifier: | |
1064 | const_or_volatile_or_space_identifier_noopt | |
1065 | | | |
56e2d25a | 1066 | ; |
47663de5 | 1067 | |
95c391b6 TT |
1068 | ptr_operator: |
1069 | ptr_operator '*' | |
1070 | { insert_type (tp_pointer); } | |
1071 | const_or_volatile_or_space_identifier | |
95c391b6 TT |
1072 | | '*' |
1073 | { insert_type (tp_pointer); } | |
1074 | const_or_volatile_or_space_identifier | |
c906108c | 1075 | | '&' |
16d01384 | 1076 | { insert_type (tp_reference); } |
95c391b6 | 1077 | | '&' ptr_operator |
16d01384 | 1078 | { insert_type (tp_reference); } |
95c391b6 TT |
1079 | ; |
1080 | ||
fcde5961 TT |
1081 | ptr_operator_ts: ptr_operator |
1082 | { | |
1083 | $$ = get_type_stack (); | |
1084 | /* This cleanup is eventually run by | |
1085 | c_parse. */ | |
1086 | make_cleanup (type_stack_cleanup, $$); | |
1087 | } | |
1088 | ; | |
1089 | ||
1090 | abs_decl: ptr_operator_ts direct_abs_decl | |
1091 | { $$ = append_type_stack ($2, $1); } | |
1092 | | ptr_operator_ts | |
c906108c SS |
1093 | | direct_abs_decl |
1094 | ; | |
1095 | ||
1096 | direct_abs_decl: '(' abs_decl ')' | |
fcde5961 | 1097 | { $$ = $2; } |
c906108c SS |
1098 | | direct_abs_decl array_mod |
1099 | { | |
fcde5961 | 1100 | push_type_stack ($1); |
c906108c SS |
1101 | push_type_int ($2); |
1102 | push_type (tp_array); | |
fcde5961 | 1103 | $$ = get_type_stack (); |
c906108c SS |
1104 | } |
1105 | | array_mod | |
1106 | { | |
1107 | push_type_int ($1); | |
1108 | push_type (tp_array); | |
fcde5961 | 1109 | $$ = get_type_stack (); |
c906108c SS |
1110 | } |
1111 | ||
1112 | | direct_abs_decl func_mod | |
fcde5961 TT |
1113 | { |
1114 | push_type_stack ($1); | |
71918a86 | 1115 | push_typelist ($2); |
fcde5961 TT |
1116 | $$ = get_type_stack (); |
1117 | } | |
c906108c | 1118 | | func_mod |
fcde5961 | 1119 | { |
71918a86 | 1120 | push_typelist ($1); |
fcde5961 TT |
1121 | $$ = get_type_stack (); |
1122 | } | |
c906108c SS |
1123 | ; |
1124 | ||
1125 | array_mod: '[' ']' | |
1126 | { $$ = -1; } | |
f2e8016f TT |
1127 | | OBJC_LBRAC ']' |
1128 | { $$ = -1; } | |
c906108c SS |
1129 | | '[' INT ']' |
1130 | { $$ = $2.val; } | |
f2e8016f TT |
1131 | | OBJC_LBRAC INT ']' |
1132 | { $$ = $2.val; } | |
c906108c SS |
1133 | ; |
1134 | ||
1135 | func_mod: '(' ')' | |
71918a86 | 1136 | { $$ = NULL; } |
a6fb9c08 | 1137 | | '(' parameter_typelist ')' |
71918a86 | 1138 | { $$ = $2; } |
c906108c SS |
1139 | ; |
1140 | ||
a22229c4 | 1141 | /* We used to try to recognize pointer to member types here, but |
c906108c SS |
1142 | that didn't work (shift/reduce conflicts meant that these rules never |
1143 | got executed). The problem is that | |
1144 | int (foo::bar::baz::bizzle) | |
1145 | is a function type but | |
1146 | int (foo::bar::baz::bizzle::*) | |
1147 | is a pointer to member type. Stroustrup loses again! */ | |
1148 | ||
1149 | type : ptype | |
c906108c SS |
1150 | ; |
1151 | ||
1152 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ | |
1153 | : TYPENAME | |
1154 | { $$ = $1.type; } | |
1155 | | INT_KEYWORD | |
f4b8a18d KW |
1156 | { $$ = lookup_signed_typename (parse_language, |
1157 | parse_gdbarch, | |
1158 | "int"); } | |
c906108c | 1159 | | LONG |
f4b8a18d KW |
1160 | { $$ = lookup_signed_typename (parse_language, |
1161 | parse_gdbarch, | |
1162 | "long"); } | |
c906108c | 1163 | | SHORT |
f4b8a18d KW |
1164 | { $$ = lookup_signed_typename (parse_language, |
1165 | parse_gdbarch, | |
1166 | "short"); } | |
c906108c | 1167 | | LONG INT_KEYWORD |
f4b8a18d KW |
1168 | { $$ = lookup_signed_typename (parse_language, |
1169 | parse_gdbarch, | |
1170 | "long"); } | |
b2c4da81 | 1171 | | LONG SIGNED_KEYWORD INT_KEYWORD |
f4b8a18d KW |
1172 | { $$ = lookup_signed_typename (parse_language, |
1173 | parse_gdbarch, | |
1174 | "long"); } | |
b2c4da81 | 1175 | | LONG SIGNED_KEYWORD |
f4b8a18d KW |
1176 | { $$ = lookup_signed_typename (parse_language, |
1177 | parse_gdbarch, | |
1178 | "long"); } | |
b2c4da81 | 1179 | | SIGNED_KEYWORD LONG INT_KEYWORD |
f4b8a18d KW |
1180 | { $$ = lookup_signed_typename (parse_language, |
1181 | parse_gdbarch, | |
1182 | "long"); } | |
c906108c | 1183 | | UNSIGNED LONG INT_KEYWORD |
f4b8a18d KW |
1184 | { $$ = lookup_unsigned_typename (parse_language, |
1185 | parse_gdbarch, | |
1186 | "long"); } | |
b2c4da81 | 1187 | | LONG UNSIGNED INT_KEYWORD |
f4b8a18d KW |
1188 | { $$ = lookup_unsigned_typename (parse_language, |
1189 | parse_gdbarch, | |
1190 | "long"); } | |
b2c4da81 | 1191 | | LONG UNSIGNED |
f4b8a18d KW |
1192 | { $$ = lookup_unsigned_typename (parse_language, |
1193 | parse_gdbarch, | |
1194 | "long"); } | |
c906108c | 1195 | | LONG LONG |
f4b8a18d KW |
1196 | { $$ = lookup_signed_typename (parse_language, |
1197 | parse_gdbarch, | |
1198 | "long long"); } | |
c906108c | 1199 | | LONG LONG INT_KEYWORD |
f4b8a18d KW |
1200 | { $$ = lookup_signed_typename (parse_language, |
1201 | parse_gdbarch, | |
1202 | "long long"); } | |
b2c4da81 | 1203 | | LONG LONG SIGNED_KEYWORD INT_KEYWORD |
f4b8a18d KW |
1204 | { $$ = lookup_signed_typename (parse_language, |
1205 | parse_gdbarch, | |
1206 | "long long"); } | |
b2c4da81 | 1207 | | LONG LONG SIGNED_KEYWORD |
f4b8a18d KW |
1208 | { $$ = lookup_signed_typename (parse_language, |
1209 | parse_gdbarch, | |
1210 | "long long"); } | |
b2c4da81 | 1211 | | SIGNED_KEYWORD LONG LONG |
f4b8a18d KW |
1212 | { $$ = lookup_signed_typename (parse_language, |
1213 | parse_gdbarch, | |
1214 | "long long"); } | |
55baeb84 | 1215 | | SIGNED_KEYWORD LONG LONG INT_KEYWORD |
f4b8a18d KW |
1216 | { $$ = lookup_signed_typename (parse_language, |
1217 | parse_gdbarch, | |
1218 | "long long"); } | |
c906108c | 1219 | | UNSIGNED LONG LONG |
f4b8a18d KW |
1220 | { $$ = lookup_unsigned_typename (parse_language, |
1221 | parse_gdbarch, | |
1222 | "long long"); } | |
c906108c | 1223 | | UNSIGNED LONG LONG INT_KEYWORD |
f4b8a18d KW |
1224 | { $$ = lookup_unsigned_typename (parse_language, |
1225 | parse_gdbarch, | |
1226 | "long long"); } | |
b2c4da81 | 1227 | | LONG LONG UNSIGNED |
f4b8a18d KW |
1228 | { $$ = lookup_unsigned_typename (parse_language, |
1229 | parse_gdbarch, | |
1230 | "long long"); } | |
b2c4da81 | 1231 | | LONG LONG UNSIGNED INT_KEYWORD |
f4b8a18d KW |
1232 | { $$ = lookup_unsigned_typename (parse_language, |
1233 | parse_gdbarch, | |
1234 | "long long"); } | |
c906108c | 1235 | | SHORT INT_KEYWORD |
f4b8a18d KW |
1236 | { $$ = lookup_signed_typename (parse_language, |
1237 | parse_gdbarch, | |
1238 | "short"); } | |
b2c4da81 | 1239 | | SHORT SIGNED_KEYWORD INT_KEYWORD |
f4b8a18d KW |
1240 | { $$ = lookup_signed_typename (parse_language, |
1241 | parse_gdbarch, | |
1242 | "short"); } | |
b2c4da81 | 1243 | | SHORT SIGNED_KEYWORD |
f4b8a18d KW |
1244 | { $$ = lookup_signed_typename (parse_language, |
1245 | parse_gdbarch, | |
1246 | "short"); } | |
c906108c | 1247 | | UNSIGNED SHORT INT_KEYWORD |
f4b8a18d KW |
1248 | { $$ = lookup_unsigned_typename (parse_language, |
1249 | parse_gdbarch, | |
1250 | "short"); } | |
b2c4da81 | 1251 | | SHORT UNSIGNED |
f4b8a18d KW |
1252 | { $$ = lookup_unsigned_typename (parse_language, |
1253 | parse_gdbarch, | |
1254 | "short"); } | |
b2c4da81 | 1255 | | SHORT UNSIGNED INT_KEYWORD |
f4b8a18d KW |
1256 | { $$ = lookup_unsigned_typename (parse_language, |
1257 | parse_gdbarch, | |
1258 | "short"); } | |
c906108c | 1259 | | DOUBLE_KEYWORD |
f4b8a18d KW |
1260 | { $$ = lookup_typename (parse_language, parse_gdbarch, |
1261 | "double", (struct block *) NULL, | |
1262 | 0); } | |
c906108c | 1263 | | LONG DOUBLE_KEYWORD |
f4b8a18d KW |
1264 | { $$ = lookup_typename (parse_language, parse_gdbarch, |
1265 | "long double", | |
1266 | (struct block *) NULL, 0); } | |
c906108c SS |
1267 | | STRUCT name |
1268 | { $$ = lookup_struct (copy_name ($2), | |
1269 | expression_context_block); } | |
1270 | | CLASS name | |
1271 | { $$ = lookup_struct (copy_name ($2), | |
1272 | expression_context_block); } | |
1273 | | UNION name | |
1274 | { $$ = lookup_union (copy_name ($2), | |
1275 | expression_context_block); } | |
1276 | | ENUM name | |
1277 | { $$ = lookup_enum (copy_name ($2), | |
1278 | expression_context_block); } | |
1279 | | UNSIGNED typename | |
e6c014f2 UW |
1280 | { $$ = lookup_unsigned_typename (parse_language, |
1281 | parse_gdbarch, | |
1282 | TYPE_NAME($2.type)); } | |
c906108c | 1283 | | UNSIGNED |
f4b8a18d KW |
1284 | { $$ = lookup_unsigned_typename (parse_language, |
1285 | parse_gdbarch, | |
1286 | "int"); } | |
c906108c | 1287 | | SIGNED_KEYWORD typename |
e6c014f2 UW |
1288 | { $$ = lookup_signed_typename (parse_language, |
1289 | parse_gdbarch, | |
1290 | TYPE_NAME($2.type)); } | |
c906108c | 1291 | | SIGNED_KEYWORD |
f4b8a18d KW |
1292 | { $$ = lookup_signed_typename (parse_language, |
1293 | parse_gdbarch, | |
1294 | "int"); } | |
c906108c SS |
1295 | /* It appears that this rule for templates is never |
1296 | reduced; template recognition happens by lookahead | |
1297 | in the token processing code in yylex. */ | |
1298 | | TEMPLATE name '<' type '>' | |
1299 | { $$ = lookup_template_type(copy_name($2), $4, | |
1300 | expression_context_block); | |
1301 | } | |
47663de5 MS |
1302 | | const_or_volatile_or_space_identifier_noopt typebase |
1303 | { $$ = follow_types ($2); } | |
1304 | | typebase const_or_volatile_or_space_identifier_noopt | |
1305 | { $$ = follow_types ($1); } | |
c906108c SS |
1306 | ; |
1307 | ||
1308 | typename: TYPENAME | |
1309 | | INT_KEYWORD | |
1310 | { | |
1311 | $$.stoken.ptr = "int"; | |
1312 | $$.stoken.length = 3; | |
f4b8a18d KW |
1313 | $$.type = lookup_signed_typename (parse_language, |
1314 | parse_gdbarch, | |
1315 | "int"); | |
c906108c SS |
1316 | } |
1317 | | LONG | |
1318 | { | |
1319 | $$.stoken.ptr = "long"; | |
1320 | $$.stoken.length = 4; | |
f4b8a18d KW |
1321 | $$.type = lookup_signed_typename (parse_language, |
1322 | parse_gdbarch, | |
1323 | "long"); | |
c906108c SS |
1324 | } |
1325 | | SHORT | |
1326 | { | |
1327 | $$.stoken.ptr = "short"; | |
1328 | $$.stoken.length = 5; | |
f4b8a18d KW |
1329 | $$.type = lookup_signed_typename (parse_language, |
1330 | parse_gdbarch, | |
1331 | "short"); | |
c906108c SS |
1332 | } |
1333 | ; | |
1334 | ||
a6fb9c08 TT |
1335 | parameter_typelist: |
1336 | nonempty_typelist | |
e314d629 | 1337 | { check_parameter_typelist ($1); } |
a6fb9c08 TT |
1338 | | nonempty_typelist ',' DOTDOTDOT |
1339 | { | |
1340 | VEC_safe_push (type_ptr, $1, NULL); | |
e314d629 | 1341 | check_parameter_typelist ($1); |
a6fb9c08 TT |
1342 | $$ = $1; |
1343 | } | |
1344 | ; | |
1345 | ||
c906108c SS |
1346 | nonempty_typelist |
1347 | : type | |
71918a86 TT |
1348 | { |
1349 | VEC (type_ptr) *typelist = NULL; | |
1350 | VEC_safe_push (type_ptr, typelist, $1); | |
1351 | $$ = typelist; | |
c906108c SS |
1352 | } |
1353 | | nonempty_typelist ',' type | |
71918a86 TT |
1354 | { |
1355 | VEC_safe_push (type_ptr, $1, $3); | |
1356 | $$ = $1; | |
c906108c SS |
1357 | } |
1358 | ; | |
1359 | ||
47663de5 | 1360 | ptype : typebase |
95c391b6 | 1361 | | ptype abs_decl |
fcde5961 TT |
1362 | { |
1363 | push_type_stack ($2); | |
1364 | $$ = follow_types ($1); | |
1365 | } | |
47663de5 MS |
1366 | ; |
1367 | ||
95c391b6 TT |
1368 | conversion_type_id: typebase conversion_declarator |
1369 | { $$ = follow_types ($1); } | |
1370 | ; | |
1371 | ||
1372 | conversion_declarator: /* Nothing. */ | |
1373 | | ptr_operator conversion_declarator | |
1374 | ; | |
1375 | ||
47663de5 MS |
1376 | const_and_volatile: CONST_KEYWORD VOLATILE_KEYWORD |
1377 | | VOLATILE_KEYWORD CONST_KEYWORD | |
1378 | ; | |
1379 | ||
1380 | const_or_volatile_noopt: const_and_volatile | |
95c391b6 TT |
1381 | { insert_type (tp_const); |
1382 | insert_type (tp_volatile); | |
47663de5 MS |
1383 | } |
1384 | | CONST_KEYWORD | |
95c391b6 | 1385 | { insert_type (tp_const); } |
47663de5 | 1386 | | VOLATILE_KEYWORD |
95c391b6 | 1387 | { insert_type (tp_volatile); } |
47663de5 MS |
1388 | ; |
1389 | ||
66c53f2b KS |
1390 | operator: OPERATOR NEW |
1391 | { $$ = operator_stoken (" new"); } | |
1392 | | OPERATOR DELETE | |
4cd18215 | 1393 | { $$ = operator_stoken (" delete"); } |
66c53f2b KS |
1394 | | OPERATOR NEW '[' ']' |
1395 | { $$ = operator_stoken (" new[]"); } | |
1396 | | OPERATOR DELETE '[' ']' | |
4cd18215 | 1397 | { $$ = operator_stoken (" delete[]"); } |
f2e8016f TT |
1398 | | OPERATOR NEW OBJC_LBRAC ']' |
1399 | { $$ = operator_stoken (" new[]"); } | |
1400 | | OPERATOR DELETE OBJC_LBRAC ']' | |
1401 | { $$ = operator_stoken (" delete[]"); } | |
66c53f2b KS |
1402 | | OPERATOR '+' |
1403 | { $$ = operator_stoken ("+"); } | |
1404 | | OPERATOR '-' | |
1405 | { $$ = operator_stoken ("-"); } | |
1406 | | OPERATOR '*' | |
1407 | { $$ = operator_stoken ("*"); } | |
1408 | | OPERATOR '/' | |
1409 | { $$ = operator_stoken ("/"); } | |
1410 | | OPERATOR '%' | |
1411 | { $$ = operator_stoken ("%"); } | |
1412 | | OPERATOR '^' | |
1413 | { $$ = operator_stoken ("^"); } | |
1414 | | OPERATOR '&' | |
1415 | { $$ = operator_stoken ("&"); } | |
1416 | | OPERATOR '|' | |
1417 | { $$ = operator_stoken ("|"); } | |
1418 | | OPERATOR '~' | |
1419 | { $$ = operator_stoken ("~"); } | |
1420 | | OPERATOR '!' | |
1421 | { $$ = operator_stoken ("!"); } | |
1422 | | OPERATOR '=' | |
1423 | { $$ = operator_stoken ("="); } | |
1424 | | OPERATOR '<' | |
1425 | { $$ = operator_stoken ("<"); } | |
1426 | | OPERATOR '>' | |
1427 | { $$ = operator_stoken (">"); } | |
1428 | | OPERATOR ASSIGN_MODIFY | |
1429 | { const char *op = "unknown"; | |
1430 | switch ($2) | |
1431 | { | |
1432 | case BINOP_RSH: | |
1433 | op = ">>="; | |
1434 | break; | |
1435 | case BINOP_LSH: | |
1436 | op = "<<="; | |
1437 | break; | |
1438 | case BINOP_ADD: | |
1439 | op = "+="; | |
1440 | break; | |
1441 | case BINOP_SUB: | |
1442 | op = "-="; | |
1443 | break; | |
1444 | case BINOP_MUL: | |
1445 | op = "*="; | |
1446 | break; | |
1447 | case BINOP_DIV: | |
1448 | op = "/="; | |
1449 | break; | |
1450 | case BINOP_REM: | |
1451 | op = "%="; | |
1452 | break; | |
1453 | case BINOP_BITWISE_IOR: | |
1454 | op = "|="; | |
1455 | break; | |
1456 | case BINOP_BITWISE_AND: | |
1457 | op = "&="; | |
1458 | break; | |
1459 | case BINOP_BITWISE_XOR: | |
1460 | op = "^="; | |
1461 | break; | |
1462 | default: | |
1463 | break; | |
1464 | } | |
1465 | ||
1466 | $$ = operator_stoken (op); | |
1467 | } | |
1468 | | OPERATOR LSH | |
1469 | { $$ = operator_stoken ("<<"); } | |
1470 | | OPERATOR RSH | |
1471 | { $$ = operator_stoken (">>"); } | |
1472 | | OPERATOR EQUAL | |
1473 | { $$ = operator_stoken ("=="); } | |
1474 | | OPERATOR NOTEQUAL | |
1475 | { $$ = operator_stoken ("!="); } | |
1476 | | OPERATOR LEQ | |
1477 | { $$ = operator_stoken ("<="); } | |
1478 | | OPERATOR GEQ | |
1479 | { $$ = operator_stoken (">="); } | |
1480 | | OPERATOR ANDAND | |
1481 | { $$ = operator_stoken ("&&"); } | |
1482 | | OPERATOR OROR | |
1483 | { $$ = operator_stoken ("||"); } | |
1484 | | OPERATOR INCREMENT | |
1485 | { $$ = operator_stoken ("++"); } | |
1486 | | OPERATOR DECREMENT | |
1487 | { $$ = operator_stoken ("--"); } | |
1488 | | OPERATOR ',' | |
1489 | { $$ = operator_stoken (","); } | |
1490 | | OPERATOR ARROW_STAR | |
1491 | { $$ = operator_stoken ("->*"); } | |
1492 | | OPERATOR ARROW | |
1493 | { $$ = operator_stoken ("->"); } | |
1494 | | OPERATOR '(' ')' | |
1495 | { $$ = operator_stoken ("()"); } | |
1496 | | OPERATOR '[' ']' | |
1497 | { $$ = operator_stoken ("[]"); } | |
f2e8016f TT |
1498 | | OPERATOR OBJC_LBRAC ']' |
1499 | { $$ = operator_stoken ("[]"); } | |
95c391b6 | 1500 | | OPERATOR conversion_type_id |
66c53f2b KS |
1501 | { char *name; |
1502 | long length; | |
1503 | struct ui_file *buf = mem_fileopen (); | |
1504 | ||
1505 | c_print_type ($2, NULL, buf, -1, 0); | |
1506 | name = ui_file_xstrdup (buf, &length); | |
1507 | ui_file_delete (buf); | |
1508 | $$ = operator_stoken (name); | |
1509 | free (name); | |
1510 | } | |
1511 | ; | |
1512 | ||
1513 | ||
1514 | ||
c906108c SS |
1515 | name : NAME { $$ = $1.stoken; } |
1516 | | BLOCKNAME { $$ = $1.stoken; } | |
1517 | | TYPENAME { $$ = $1.stoken; } | |
1518 | | NAME_OR_INT { $$ = $1.stoken; } | |
7322dca9 | 1519 | | UNKNOWN_CPP_NAME { $$ = $1.stoken; } |
66c53f2b | 1520 | | operator { $$ = $1; } |
c906108c SS |
1521 | ; |
1522 | ||
1523 | name_not_typename : NAME | |
1524 | | BLOCKNAME | |
1525 | /* These would be useful if name_not_typename was useful, but it is just | |
1526 | a fake for "variable", so these cause reduce/reduce conflicts because | |
1527 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, | |
1528 | =exp) or just an exp. If name_not_typename was ever used in an lvalue | |
1529 | context where only a name could occur, this might be useful. | |
1530 | | NAME_OR_INT | |
1531 | */ | |
6e31430b TT |
1532 | | operator |
1533 | { | |
1534 | $$.stoken = $1; | |
1535 | $$.sym = lookup_symbol ($1.ptr, | |
1536 | expression_context_block, | |
1537 | VAR_DOMAIN, | |
1538 | &$$.is_a_field_of_this); | |
1539 | } | |
7322dca9 | 1540 | | UNKNOWN_CPP_NAME |
c906108c SS |
1541 | ; |
1542 | ||
1543 | %% | |
1544 | ||
66c53f2b KS |
1545 | /* Returns a stoken of the operator name given by OP (which does not |
1546 | include the string "operator"). */ | |
1547 | static struct stoken | |
1548 | operator_stoken (const char *op) | |
1549 | { | |
1550 | static const char *operator_string = "operator"; | |
1551 | struct stoken st = { NULL, 0 }; | |
1552 | st.length = strlen (operator_string) + strlen (op); | |
1553 | st.ptr = malloc (st.length + 1); | |
1554 | strcpy (st.ptr, operator_string); | |
1555 | strcat (st.ptr, op); | |
1556 | ||
1557 | /* The toplevel (c_parse) will free the memory allocated here. */ | |
1558 | make_cleanup (free, st.ptr); | |
1559 | return st; | |
1560 | }; | |
1561 | ||
e314d629 TT |
1562 | /* Validate a parameter typelist. */ |
1563 | ||
1564 | static void | |
1565 | check_parameter_typelist (VEC (type_ptr) *params) | |
1566 | { | |
1567 | struct type *type; | |
1568 | int ix; | |
1569 | ||
1570 | for (ix = 0; VEC_iterate (type_ptr, params, ix, type); ++ix) | |
1571 | { | |
1572 | if (type != NULL && TYPE_CODE (check_typedef (type)) == TYPE_CODE_VOID) | |
1573 | { | |
1574 | if (ix == 0) | |
1575 | { | |
1576 | if (VEC_length (type_ptr, params) == 1) | |
1577 | { | |
1578 | /* Ok. */ | |
1579 | break; | |
1580 | } | |
1581 | VEC_free (type_ptr, params); | |
1582 | error (_("parameter types following 'void'")); | |
1583 | } | |
1584 | else | |
1585 | { | |
1586 | VEC_free (type_ptr, params); | |
1587 | error (_("'void' invalid as parameter type")); | |
1588 | } | |
1589 | } | |
1590 | } | |
1591 | } | |
1592 | ||
c906108c SS |
1593 | /* Take care of parsing a number (anything that starts with a digit). |
1594 | Set yylval and return the token type; update lexptr. | |
1595 | LEN is the number of characters in it. */ | |
1596 | ||
1597 | /*** Needs some error checking for the float case ***/ | |
1598 | ||
1599 | static int | |
68c1b02d | 1600 | parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere) |
c906108c SS |
1601 | { |
1602 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values | |
1603 | here, and we do kind of silly things like cast to unsigned. */ | |
710122da DC |
1604 | LONGEST n = 0; |
1605 | LONGEST prevn = 0; | |
c906108c SS |
1606 | ULONGEST un; |
1607 | ||
710122da DC |
1608 | int i = 0; |
1609 | int c; | |
1610 | int base = input_radix; | |
c906108c SS |
1611 | int unsigned_p = 0; |
1612 | ||
1613 | /* Number of "L" suffixes encountered. */ | |
1614 | int long_p = 0; | |
1615 | ||
1616 | /* We have found a "L" or "U" suffix. */ | |
1617 | int found_suffix = 0; | |
1618 | ||
1619 | ULONGEST high_bit; | |
1620 | struct type *signed_type; | |
1621 | struct type *unsigned_type; | |
1622 | ||
1623 | if (parsed_float) | |
1624 | { | |
27bc4d80 TJB |
1625 | /* If it ends at "df", "dd" or "dl", take it as type of decimal floating |
1626 | point. Return DECFLOAT. */ | |
1627 | ||
fe9441f6 | 1628 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'f') |
27bc4d80 TJB |
1629 | { |
1630 | p[len - 2] = '\0'; | |
1631 | putithere->typed_val_decfloat.type | |
3e79cecf | 1632 | = parse_type->builtin_decfloat; |
e17a4113 UW |
1633 | decimal_from_string (putithere->typed_val_decfloat.val, 4, |
1634 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1635 | p[len - 2] = 'd'; |
1636 | return DECFLOAT; | |
27bc4d80 TJB |
1637 | } |
1638 | ||
fe9441f6 | 1639 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'd') |
27bc4d80 TJB |
1640 | { |
1641 | p[len - 2] = '\0'; | |
1642 | putithere->typed_val_decfloat.type | |
3e79cecf | 1643 | = parse_type->builtin_decdouble; |
e17a4113 UW |
1644 | decimal_from_string (putithere->typed_val_decfloat.val, 8, |
1645 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1646 | p[len - 2] = 'd'; |
1647 | return DECFLOAT; | |
27bc4d80 TJB |
1648 | } |
1649 | ||
fe9441f6 | 1650 | if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'l') |
27bc4d80 TJB |
1651 | { |
1652 | p[len - 2] = '\0'; | |
1653 | putithere->typed_val_decfloat.type | |
3e79cecf | 1654 | = parse_type->builtin_declong; |
e17a4113 UW |
1655 | decimal_from_string (putithere->typed_val_decfloat.val, 16, |
1656 | gdbarch_byte_order (parse_gdbarch), p); | |
fe9441f6 JK |
1657 | p[len - 2] = 'd'; |
1658 | return DECFLOAT; | |
27bc4d80 TJB |
1659 | } |
1660 | ||
d30f5e1f DE |
1661 | if (! parse_c_float (parse_gdbarch, p, len, |
1662 | &putithere->typed_val_float.dval, | |
1663 | &putithere->typed_val_float.type)) | |
1664 | return ERROR; | |
c906108c SS |
1665 | return FLOAT; |
1666 | } | |
1667 | ||
1668 | /* Handle base-switching prefixes 0x, 0t, 0d, 0 */ | |
1669 | if (p[0] == '0') | |
1670 | switch (p[1]) | |
1671 | { | |
1672 | case 'x': | |
1673 | case 'X': | |
1674 | if (len >= 3) | |
1675 | { | |
1676 | p += 2; | |
1677 | base = 16; | |
1678 | len -= 2; | |
1679 | } | |
1680 | break; | |
1681 | ||
b5cfddf5 JK |
1682 | case 'b': |
1683 | case 'B': | |
1684 | if (len >= 3) | |
1685 | { | |
1686 | p += 2; | |
1687 | base = 2; | |
1688 | len -= 2; | |
1689 | } | |
1690 | break; | |
1691 | ||
c906108c SS |
1692 | case 't': |
1693 | case 'T': | |
1694 | case 'd': | |
1695 | case 'D': | |
1696 | if (len >= 3) | |
1697 | { | |
1698 | p += 2; | |
1699 | base = 10; | |
1700 | len -= 2; | |
1701 | } | |
1702 | break; | |
1703 | ||
1704 | default: | |
1705 | base = 8; | |
1706 | break; | |
1707 | } | |
1708 | ||
1709 | while (len-- > 0) | |
1710 | { | |
1711 | c = *p++; | |
1712 | if (c >= 'A' && c <= 'Z') | |
1713 | c += 'a' - 'A'; | |
1714 | if (c != 'l' && c != 'u') | |
1715 | n *= base; | |
1716 | if (c >= '0' && c <= '9') | |
1717 | { | |
1718 | if (found_suffix) | |
1719 | return ERROR; | |
1720 | n += i = c - '0'; | |
1721 | } | |
1722 | else | |
1723 | { | |
1724 | if (base > 10 && c >= 'a' && c <= 'f') | |
1725 | { | |
1726 | if (found_suffix) | |
1727 | return ERROR; | |
1728 | n += i = c - 'a' + 10; | |
1729 | } | |
1730 | else if (c == 'l') | |
1731 | { | |
1732 | ++long_p; | |
1733 | found_suffix = 1; | |
1734 | } | |
1735 | else if (c == 'u') | |
1736 | { | |
1737 | unsigned_p = 1; | |
1738 | found_suffix = 1; | |
1739 | } | |
1740 | else | |
1741 | return ERROR; /* Char not a digit */ | |
1742 | } | |
1743 | if (i >= base) | |
1744 | return ERROR; /* Invalid digit in this base */ | |
1745 | ||
1746 | /* Portably test for overflow (only works for nonzero values, so make | |
1747 | a second check for zero). FIXME: Can't we just make n and prevn | |
1748 | unsigned and avoid this? */ | |
1749 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) | |
1750 | unsigned_p = 1; /* Try something unsigned */ | |
1751 | ||
1752 | /* Portably test for unsigned overflow. | |
1753 | FIXME: This check is wrong; for example it doesn't find overflow | |
1754 | on 0x123456789 when LONGEST is 32 bits. */ | |
1755 | if (c != 'l' && c != 'u' && n != 0) | |
1756 | { | |
1757 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) | |
001083c6 | 1758 | error (_("Numeric constant too large.")); |
c906108c SS |
1759 | } |
1760 | prevn = n; | |
1761 | } | |
1762 | ||
1763 | /* An integer constant is an int, a long, or a long long. An L | |
1764 | suffix forces it to be long; an LL suffix forces it to be long | |
1765 | long. If not forced to a larger size, it gets the first type of | |
1766 | the above that it fits in. To figure out whether it fits, we | |
1767 | shift it right and see whether anything remains. Note that we | |
1768 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one | |
1769 | operation, because many compilers will warn about such a shift | |
9a76efb6 UW |
1770 | (which always produces a zero result). Sometimes gdbarch_int_bit |
1771 | or gdbarch_long_bit will be that big, sometimes not. To deal with | |
c906108c SS |
1772 | the case where it is we just always shift the value more than |
1773 | once, with fewer bits each time. */ | |
1774 | ||
1775 | un = (ULONGEST)n >> 2; | |
1776 | if (long_p == 0 | |
3e79cecf | 1777 | && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0) |
c906108c | 1778 | { |
3e79cecf | 1779 | high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1); |
c906108c SS |
1780 | |
1781 | /* A large decimal (not hex or octal) constant (between INT_MAX | |
1782 | and UINT_MAX) is a long or unsigned long, according to ANSI, | |
1783 | never an unsigned int, but this code treats it as unsigned | |
1784 | int. This probably should be fixed. GCC gives a warning on | |
1785 | such constants. */ | |
1786 | ||
3e79cecf UW |
1787 | unsigned_type = parse_type->builtin_unsigned_int; |
1788 | signed_type = parse_type->builtin_int; | |
c906108c SS |
1789 | } |
1790 | else if (long_p <= 1 | |
3e79cecf | 1791 | && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0) |
c906108c | 1792 | { |
3e79cecf UW |
1793 | high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1); |
1794 | unsigned_type = parse_type->builtin_unsigned_long; | |
1795 | signed_type = parse_type->builtin_long; | |
c906108c SS |
1796 | } |
1797 | else | |
1798 | { | |
1799 | int shift; | |
9a76efb6 | 1800 | if (sizeof (ULONGEST) * HOST_CHAR_BIT |
3e79cecf | 1801 | < gdbarch_long_long_bit (parse_gdbarch)) |
c906108c SS |
1802 | /* A long long does not fit in a LONGEST. */ |
1803 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); | |
1804 | else | |
3e79cecf | 1805 | shift = (gdbarch_long_long_bit (parse_gdbarch) - 1); |
c906108c | 1806 | high_bit = (ULONGEST) 1 << shift; |
3e79cecf UW |
1807 | unsigned_type = parse_type->builtin_unsigned_long_long; |
1808 | signed_type = parse_type->builtin_long_long; | |
c906108c SS |
1809 | } |
1810 | ||
1811 | putithere->typed_val_int.val = n; | |
1812 | ||
1813 | /* If the high bit of the worked out type is set then this number | |
1814 | has to be unsigned. */ | |
1815 | ||
1816 | if (unsigned_p || (n & high_bit)) | |
1817 | { | |
1818 | putithere->typed_val_int.type = unsigned_type; | |
1819 | } | |
1820 | else | |
1821 | { | |
1822 | putithere->typed_val_int.type = signed_type; | |
1823 | } | |
1824 | ||
1825 | return INT; | |
1826 | } | |
1827 | ||
6c7a06a3 TT |
1828 | /* Temporary obstack used for holding strings. */ |
1829 | static struct obstack tempbuf; | |
1830 | static int tempbuf_init; | |
1831 | ||
1832 | /* Parse a C escape sequence. The initial backslash of the sequence | |
1833 | is at (*PTR)[-1]. *PTR will be updated to point to just after the | |
1834 | last character of the sequence. If OUTPUT is not NULL, the | |
1835 | translated form of the escape sequence will be written there. If | |
1836 | OUTPUT is NULL, no output is written and the call will only affect | |
1837 | *PTR. If an escape sequence is expressed in target bytes, then the | |
1838 | entire sequence will simply be copied to OUTPUT. Return 1 if any | |
1839 | character was emitted, 0 otherwise. */ | |
1840 | ||
1841 | int | |
1842 | c_parse_escape (char **ptr, struct obstack *output) | |
1843 | { | |
1844 | char *tokptr = *ptr; | |
1845 | int result = 1; | |
1846 | ||
1847 | /* Some escape sequences undergo character set conversion. Those we | |
1848 | translate here. */ | |
1849 | switch (*tokptr) | |
1850 | { | |
1851 | /* Hex escapes do not undergo character set conversion, so keep | |
1852 | the escape sequence for later. */ | |
1853 | case 'x': | |
1854 | if (output) | |
1855 | obstack_grow_str (output, "\\x"); | |
1856 | ++tokptr; | |
1857 | if (!isxdigit (*tokptr)) | |
1858 | error (_("\\x escape without a following hex digit")); | |
1859 | while (isxdigit (*tokptr)) | |
1860 | { | |
1861 | if (output) | |
1862 | obstack_1grow (output, *tokptr); | |
1863 | ++tokptr; | |
1864 | } | |
1865 | break; | |
1866 | ||
1867 | /* Octal escapes do not undergo character set conversion, so | |
1868 | keep the escape sequence for later. */ | |
1869 | case '0': | |
1870 | case '1': | |
1871 | case '2': | |
1872 | case '3': | |
1873 | case '4': | |
1874 | case '5': | |
1875 | case '6': | |
1876 | case '7': | |
30b66ecc TT |
1877 | { |
1878 | int i; | |
1879 | if (output) | |
1880 | obstack_grow_str (output, "\\"); | |
1881 | for (i = 0; | |
1882 | i < 3 && isdigit (*tokptr) && *tokptr != '8' && *tokptr != '9'; | |
1883 | ++i) | |
1884 | { | |
1885 | if (output) | |
1886 | obstack_1grow (output, *tokptr); | |
1887 | ++tokptr; | |
1888 | } | |
1889 | } | |
6c7a06a3 TT |
1890 | break; |
1891 | ||
1892 | /* We handle UCNs later. We could handle them here, but that | |
1893 | would mean a spurious error in the case where the UCN could | |
1894 | be converted to the target charset but not the host | |
1895 | charset. */ | |
1896 | case 'u': | |
1897 | case 'U': | |
1898 | { | |
1899 | char c = *tokptr; | |
1900 | int i, len = c == 'U' ? 8 : 4; | |
1901 | if (output) | |
1902 | { | |
1903 | obstack_1grow (output, '\\'); | |
1904 | obstack_1grow (output, *tokptr); | |
1905 | } | |
1906 | ++tokptr; | |
1907 | if (!isxdigit (*tokptr)) | |
1908 | error (_("\\%c escape without a following hex digit"), c); | |
1909 | for (i = 0; i < len && isxdigit (*tokptr); ++i) | |
1910 | { | |
1911 | if (output) | |
1912 | obstack_1grow (output, *tokptr); | |
1913 | ++tokptr; | |
1914 | } | |
1915 | } | |
1916 | break; | |
1917 | ||
1918 | /* We must pass backslash through so that it does not | |
1919 | cause quoting during the second expansion. */ | |
1920 | case '\\': | |
1921 | if (output) | |
1922 | obstack_grow_str (output, "\\\\"); | |
1923 | ++tokptr; | |
1924 | break; | |
1925 | ||
1926 | /* Escapes which undergo conversion. */ | |
1927 | case 'a': | |
1928 | if (output) | |
1929 | obstack_1grow (output, '\a'); | |
1930 | ++tokptr; | |
1931 | break; | |
1932 | case 'b': | |
1933 | if (output) | |
1934 | obstack_1grow (output, '\b'); | |
1935 | ++tokptr; | |
1936 | break; | |
1937 | case 'f': | |
1938 | if (output) | |
1939 | obstack_1grow (output, '\f'); | |
1940 | ++tokptr; | |
1941 | break; | |
1942 | case 'n': | |
1943 | if (output) | |
1944 | obstack_1grow (output, '\n'); | |
1945 | ++tokptr; | |
1946 | break; | |
1947 | case 'r': | |
1948 | if (output) | |
1949 | obstack_1grow (output, '\r'); | |
1950 | ++tokptr; | |
1951 | break; | |
1952 | case 't': | |
1953 | if (output) | |
1954 | obstack_1grow (output, '\t'); | |
1955 | ++tokptr; | |
1956 | break; | |
1957 | case 'v': | |
1958 | if (output) | |
1959 | obstack_1grow (output, '\v'); | |
1960 | ++tokptr; | |
1961 | break; | |
1962 | ||
1963 | /* GCC extension. */ | |
1964 | case 'e': | |
1965 | if (output) | |
1966 | obstack_1grow (output, HOST_ESCAPE_CHAR); | |
1967 | ++tokptr; | |
1968 | break; | |
1969 | ||
1970 | /* Backslash-newline expands to nothing at all. */ | |
1971 | case '\n': | |
1972 | ++tokptr; | |
1973 | result = 0; | |
1974 | break; | |
1975 | ||
1976 | /* A few escapes just expand to the character itself. */ | |
1977 | case '\'': | |
1978 | case '\"': | |
1979 | case '?': | |
1980 | /* GCC extensions. */ | |
1981 | case '(': | |
1982 | case '{': | |
1983 | case '[': | |
1984 | case '%': | |
1985 | /* Unrecognized escapes turn into the character itself. */ | |
1986 | default: | |
1987 | if (output) | |
1988 | obstack_1grow (output, *tokptr); | |
1989 | ++tokptr; | |
1990 | break; | |
1991 | } | |
1992 | *ptr = tokptr; | |
1993 | return result; | |
1994 | } | |
1995 | ||
1996 | /* Parse a string or character literal from TOKPTR. The string or | |
1997 | character may be wide or unicode. *OUTPTR is set to just after the | |
1998 | end of the literal in the input string. The resulting token is | |
1999 | stored in VALUE. This returns a token value, either STRING or | |
2000 | CHAR, depending on what was parsed. *HOST_CHARS is set to the | |
2001 | number of host characters in the literal. */ | |
2002 | static int | |
2003 | parse_string_or_char (char *tokptr, char **outptr, struct typed_stoken *value, | |
2004 | int *host_chars) | |
2005 | { | |
8c5630cb | 2006 | int quote; |
6c7a06a3 | 2007 | enum c_string_type type; |
f2e8016f | 2008 | int is_objc = 0; |
6c7a06a3 TT |
2009 | |
2010 | /* Build the gdb internal form of the input string in tempbuf. Note | |
2011 | that the buffer is null byte terminated *only* for the | |
2012 | convenience of debugging gdb itself and printing the buffer | |
2013 | contents when the buffer contains no embedded nulls. Gdb does | |
2014 | not depend upon the buffer being null byte terminated, it uses | |
2015 | the length string instead. This allows gdb to handle C strings | |
2016 | (as well as strings in other languages) with embedded null | |
2017 | bytes */ | |
2018 | ||
2019 | if (!tempbuf_init) | |
2020 | tempbuf_init = 1; | |
2021 | else | |
2022 | obstack_free (&tempbuf, NULL); | |
2023 | obstack_init (&tempbuf); | |
2024 | ||
2025 | /* Record the string type. */ | |
2026 | if (*tokptr == 'L') | |
2027 | { | |
2028 | type = C_WIDE_STRING; | |
2029 | ++tokptr; | |
2030 | } | |
2031 | else if (*tokptr == 'u') | |
2032 | { | |
2033 | type = C_STRING_16; | |
2034 | ++tokptr; | |
2035 | } | |
2036 | else if (*tokptr == 'U') | |
2037 | { | |
2038 | type = C_STRING_32; | |
2039 | ++tokptr; | |
2040 | } | |
f2e8016f TT |
2041 | else if (*tokptr == '@') |
2042 | { | |
2043 | /* An Objective C string. */ | |
2044 | is_objc = 1; | |
2045 | type = C_STRING; | |
2046 | ++tokptr; | |
2047 | } | |
6c7a06a3 TT |
2048 | else |
2049 | type = C_STRING; | |
2050 | ||
2051 | /* Skip the quote. */ | |
2052 | quote = *tokptr; | |
2053 | if (quote == '\'') | |
2054 | type |= C_CHAR; | |
2055 | ++tokptr; | |
2056 | ||
2057 | *host_chars = 0; | |
2058 | ||
2059 | while (*tokptr) | |
2060 | { | |
2061 | char c = *tokptr; | |
2062 | if (c == '\\') | |
2063 | { | |
2064 | ++tokptr; | |
2065 | *host_chars += c_parse_escape (&tokptr, &tempbuf); | |
2066 | } | |
2067 | else if (c == quote) | |
2068 | break; | |
2069 | else | |
2070 | { | |
2071 | obstack_1grow (&tempbuf, c); | |
2072 | ++tokptr; | |
2073 | /* FIXME: this does the wrong thing with multi-byte host | |
2074 | characters. We could use mbrlen here, but that would | |
2075 | make "set host-charset" a bit less useful. */ | |
2076 | ++*host_chars; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | if (*tokptr != quote) | |
2081 | { | |
2082 | if (quote == '"') | |
001083c6 | 2083 | error (_("Unterminated string in expression.")); |
6c7a06a3 | 2084 | else |
001083c6 | 2085 | error (_("Unmatched single quote.")); |
6c7a06a3 TT |
2086 | } |
2087 | ++tokptr; | |
2088 | ||
2089 | value->type = type; | |
2090 | value->ptr = obstack_base (&tempbuf); | |
2091 | value->length = obstack_object_size (&tempbuf); | |
2092 | ||
2093 | *outptr = tokptr; | |
2094 | ||
f2e8016f | 2095 | return quote == '"' ? (is_objc ? NSSTRING : STRING) : CHAR; |
6c7a06a3 TT |
2096 | } |
2097 | ||
274b54d7 TT |
2098 | /* This is used to associate some attributes with a token. */ |
2099 | ||
2100 | enum token_flags | |
2101 | { | |
2102 | /* If this bit is set, the token is C++-only. */ | |
2103 | ||
2104 | FLAG_CXX = 1, | |
2105 | ||
2106 | /* If this bit is set, the token is conditional: if there is a | |
2107 | symbol of the same name, then the token is a symbol; otherwise, | |
2108 | the token is a keyword. */ | |
2109 | ||
2110 | FLAG_SHADOW = 2 | |
2111 | }; | |
2112 | ||
c906108c SS |
2113 | struct token |
2114 | { | |
2115 | char *operator; | |
2116 | int token; | |
2117 | enum exp_opcode opcode; | |
274b54d7 | 2118 | enum token_flags flags; |
c906108c SS |
2119 | }; |
2120 | ||
2121 | static const struct token tokentab3[] = | |
2122 | { | |
ba163c7e | 2123 | {">>=", ASSIGN_MODIFY, BINOP_RSH, 0}, |
c1af96a0 | 2124 | {"<<=", ASSIGN_MODIFY, BINOP_LSH, 0}, |
274b54d7 | 2125 | {"->*", ARROW_STAR, BINOP_END, FLAG_CXX}, |
a6fb9c08 | 2126 | {"...", DOTDOTDOT, BINOP_END, 0} |
c906108c SS |
2127 | }; |
2128 | ||
2129 | static const struct token tokentab2[] = | |
2130 | { | |
ba163c7e TT |
2131 | {"+=", ASSIGN_MODIFY, BINOP_ADD, 0}, |
2132 | {"-=", ASSIGN_MODIFY, BINOP_SUB, 0}, | |
2133 | {"*=", ASSIGN_MODIFY, BINOP_MUL, 0}, | |
2134 | {"/=", ASSIGN_MODIFY, BINOP_DIV, 0}, | |
2135 | {"%=", ASSIGN_MODIFY, BINOP_REM, 0}, | |
2136 | {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR, 0}, | |
2137 | {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND, 0}, | |
2138 | {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR, 0}, | |
2139 | {"++", INCREMENT, BINOP_END, 0}, | |
2140 | {"--", DECREMENT, BINOP_END, 0}, | |
2141 | {"->", ARROW, BINOP_END, 0}, | |
2142 | {"&&", ANDAND, BINOP_END, 0}, | |
2143 | {"||", OROR, BINOP_END, 0}, | |
ec7f2efe KS |
2144 | /* "::" is *not* only C++: gdb overrides its meaning in several |
2145 | different ways, e.g., 'filename'::func, function::variable. */ | |
ba163c7e TT |
2146 | {"::", COLONCOLON, BINOP_END, 0}, |
2147 | {"<<", LSH, BINOP_END, 0}, | |
2148 | {">>", RSH, BINOP_END, 0}, | |
2149 | {"==", EQUAL, BINOP_END, 0}, | |
2150 | {"!=", NOTEQUAL, BINOP_END, 0}, | |
2151 | {"<=", LEQ, BINOP_END, 0}, | |
c1af96a0 | 2152 | {">=", GEQ, BINOP_END, 0}, |
274b54d7 | 2153 | {".*", DOT_STAR, BINOP_END, FLAG_CXX} |
ba163c7e TT |
2154 | }; |
2155 | ||
2156 | /* Identifier-like tokens. */ | |
2157 | static const struct token ident_tokens[] = | |
2158 | { | |
2159 | {"unsigned", UNSIGNED, OP_NULL, 0}, | |
274b54d7 | 2160 | {"template", TEMPLATE, OP_NULL, FLAG_CXX}, |
ba163c7e TT |
2161 | {"volatile", VOLATILE_KEYWORD, OP_NULL, 0}, |
2162 | {"struct", STRUCT, OP_NULL, 0}, | |
2163 | {"signed", SIGNED_KEYWORD, OP_NULL, 0}, | |
2164 | {"sizeof", SIZEOF, OP_NULL, 0}, | |
2165 | {"double", DOUBLE_KEYWORD, OP_NULL, 0}, | |
274b54d7 TT |
2166 | {"false", FALSEKEYWORD, OP_NULL, FLAG_CXX}, |
2167 | {"class", CLASS, OP_NULL, FLAG_CXX}, | |
ba163c7e TT |
2168 | {"union", UNION, OP_NULL, 0}, |
2169 | {"short", SHORT, OP_NULL, 0}, | |
2170 | {"const", CONST_KEYWORD, OP_NULL, 0}, | |
2171 | {"enum", ENUM, OP_NULL, 0}, | |
2172 | {"long", LONG, OP_NULL, 0}, | |
274b54d7 | 2173 | {"true", TRUEKEYWORD, OP_NULL, FLAG_CXX}, |
ba163c7e | 2174 | {"int", INT_KEYWORD, OP_NULL, 0}, |
274b54d7 TT |
2175 | {"new", NEW, OP_NULL, FLAG_CXX}, |
2176 | {"delete", DELETE, OP_NULL, FLAG_CXX}, | |
2177 | {"operator", OPERATOR, OP_NULL, FLAG_CXX}, | |
2178 | ||
2179 | {"and", ANDAND, BINOP_END, FLAG_CXX}, | |
2180 | {"and_eq", ASSIGN_MODIFY, BINOP_BITWISE_AND, FLAG_CXX}, | |
2181 | {"bitand", '&', OP_NULL, FLAG_CXX}, | |
2182 | {"bitor", '|', OP_NULL, FLAG_CXX}, | |
2183 | {"compl", '~', OP_NULL, FLAG_CXX}, | |
2184 | {"not", '!', OP_NULL, FLAG_CXX}, | |
2185 | {"not_eq", NOTEQUAL, BINOP_END, FLAG_CXX}, | |
2186 | {"or", OROR, BINOP_END, FLAG_CXX}, | |
2187 | {"or_eq", ASSIGN_MODIFY, BINOP_BITWISE_IOR, FLAG_CXX}, | |
2188 | {"xor", '^', OP_NULL, FLAG_CXX}, | |
2189 | {"xor_eq", ASSIGN_MODIFY, BINOP_BITWISE_XOR, FLAG_CXX}, | |
2190 | ||
2191 | {"const_cast", CONST_CAST, OP_NULL, FLAG_CXX }, | |
2192 | {"dynamic_cast", DYNAMIC_CAST, OP_NULL, FLAG_CXX }, | |
2193 | {"static_cast", STATIC_CAST, OP_NULL, FLAG_CXX }, | |
608b4967 TT |
2194 | {"reinterpret_cast", REINTERPRET_CAST, OP_NULL, FLAG_CXX }, |
2195 | ||
2196 | {"__typeof__", TYPEOF, OP_TYPEOF, 0 }, | |
2197 | {"__typeof", TYPEOF, OP_TYPEOF, 0 }, | |
2198 | {"typeof", TYPEOF, OP_TYPEOF, FLAG_SHADOW }, | |
2199 | {"__decltype", DECLTYPE, OP_DECLTYPE, FLAG_CXX }, | |
2200 | {"decltype", DECLTYPE, OP_DECLTYPE, FLAG_CXX | FLAG_SHADOW } | |
c906108c SS |
2201 | }; |
2202 | ||
7c8adf68 TT |
2203 | /* When we find that lexptr (the global var defined in parse.c) is |
2204 | pointing at a macro invocation, we expand the invocation, and call | |
2205 | scan_macro_expansion to save the old lexptr here and point lexptr | |
2206 | into the expanded text. When we reach the end of that, we call | |
2207 | end_macro_expansion to pop back to the value we saved here. The | |
2208 | macro expansion code promises to return only fully-expanded text, | |
2209 | so we don't need to "push" more than one level. | |
2210 | ||
2211 | This is disgusting, of course. It would be cleaner to do all macro | |
2212 | expansion beforehand, and then hand that to lexptr. But we don't | |
2213 | really know where the expression ends. Remember, in a command like | |
2214 | ||
2215 | (gdb) break *ADDRESS if CONDITION | |
2216 | ||
2217 | we evaluate ADDRESS in the scope of the current frame, but we | |
2218 | evaluate CONDITION in the scope of the breakpoint's location. So | |
2219 | it's simply wrong to try to macro-expand the whole thing at once. */ | |
2220 | static char *macro_original_text; | |
2221 | ||
2222 | /* We save all intermediate macro expansions on this obstack for the | |
2223 | duration of a single parse. The expansion text may sometimes have | |
2224 | to live past the end of the expansion, due to yacc lookahead. | |
2225 | Rather than try to be clever about saving the data for a single | |
2226 | token, we simply keep it all and delete it after parsing has | |
2227 | completed. */ | |
2228 | static struct obstack expansion_obstack; | |
2229 | ||
2230 | static void | |
2231 | scan_macro_expansion (char *expansion) | |
2232 | { | |
2233 | char *copy; | |
2234 | ||
2235 | /* We'd better not be trying to push the stack twice. */ | |
2236 | gdb_assert (! macro_original_text); | |
2237 | ||
2238 | /* Copy to the obstack, and then free the intermediate | |
2239 | expansion. */ | |
2240 | copy = obstack_copy0 (&expansion_obstack, expansion, strlen (expansion)); | |
2241 | xfree (expansion); | |
2242 | ||
2243 | /* Save the old lexptr value, so we can return to it when we're done | |
2244 | parsing the expanded text. */ | |
2245 | macro_original_text = lexptr; | |
2246 | lexptr = copy; | |
2247 | } | |
2248 | ||
2249 | ||
2250 | static int | |
2251 | scanning_macro_expansion (void) | |
2252 | { | |
2253 | return macro_original_text != 0; | |
2254 | } | |
2255 | ||
2256 | ||
2257 | static void | |
2258 | finished_macro_expansion (void) | |
2259 | { | |
2260 | /* There'd better be something to pop back to. */ | |
2261 | gdb_assert (macro_original_text); | |
2262 | ||
2263 | /* Pop back to the original text. */ | |
2264 | lexptr = macro_original_text; | |
2265 | macro_original_text = 0; | |
2266 | } | |
2267 | ||
2268 | ||
2269 | static void | |
2270 | scan_macro_cleanup (void *dummy) | |
2271 | { | |
2272 | if (macro_original_text) | |
2273 | finished_macro_expansion (); | |
2274 | ||
2275 | obstack_free (&expansion_obstack, NULL); | |
2276 | } | |
2277 | ||
4e8f195d TT |
2278 | /* Return true iff the token represents a C++ cast operator. */ |
2279 | ||
2280 | static int | |
2281 | is_cast_operator (const char *token, int len) | |
2282 | { | |
2283 | return (! strncmp (token, "dynamic_cast", len) | |
2284 | || ! strncmp (token, "static_cast", len) | |
2285 | || ! strncmp (token, "reinterpret_cast", len) | |
2286 | || ! strncmp (token, "const_cast", len)); | |
2287 | } | |
7c8adf68 TT |
2288 | |
2289 | /* The scope used for macro expansion. */ | |
2290 | static struct macro_scope *expression_macro_scope; | |
2291 | ||
65d12d83 TT |
2292 | /* This is set if a NAME token appeared at the very end of the input |
2293 | string, with no whitespace separating the name from the EOF. This | |
2294 | is used only when parsing to do field name completion. */ | |
2295 | static int saw_name_at_eof; | |
2296 | ||
2297 | /* This is set if the previously-returned token was a structure | |
2298 | operator -- either '.' or ARROW. This is used only when parsing to | |
2299 | do field name completion. */ | |
2300 | static int last_was_structop; | |
2301 | ||
c906108c SS |
2302 | /* Read one token, getting characters through lexptr. */ |
2303 | ||
2304 | static int | |
48e32051 | 2305 | lex_one_token (void) |
c906108c SS |
2306 | { |
2307 | int c; | |
2308 | int namelen; | |
2309 | unsigned int i; | |
2310 | char *tokstart; | |
65d12d83 | 2311 | int saw_structop = last_was_structop; |
ba163c7e | 2312 | char *copy; |
65d12d83 TT |
2313 | |
2314 | last_was_structop = 0; | |
2315 | ||
c906108c SS |
2316 | retry: |
2317 | ||
84f0252a JB |
2318 | /* Check if this is a macro invocation that we need to expand. */ |
2319 | if (! scanning_macro_expansion ()) | |
2320 | { | |
2321 | char *expanded = macro_expand_next (&lexptr, | |
7c8adf68 TT |
2322 | standard_macro_lookup, |
2323 | expression_macro_scope); | |
84f0252a JB |
2324 | |
2325 | if (expanded) | |
2326 | scan_macro_expansion (expanded); | |
2327 | } | |
2328 | ||
665132f9 | 2329 | prev_lexptr = lexptr; |
c906108c SS |
2330 | |
2331 | tokstart = lexptr; | |
2332 | /* See if it is a special token of length 3. */ | |
2333 | for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++) | |
bf896cb0 | 2334 | if (strncmp (tokstart, tokentab3[i].operator, 3) == 0) |
c906108c | 2335 | { |
274b54d7 | 2336 | if ((tokentab3[i].flags & FLAG_CXX) != 0 |
ec7f2efe KS |
2337 | && parse_language->la_language != language_cplus) |
2338 | break; | |
2339 | ||
c906108c SS |
2340 | lexptr += 3; |
2341 | yylval.opcode = tokentab3[i].opcode; | |
2342 | return tokentab3[i].token; | |
2343 | } | |
2344 | ||
2345 | /* See if it is a special token of length 2. */ | |
2346 | for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++) | |
bf896cb0 | 2347 | if (strncmp (tokstart, tokentab2[i].operator, 2) == 0) |
c906108c | 2348 | { |
274b54d7 | 2349 | if ((tokentab2[i].flags & FLAG_CXX) != 0 |
ec7f2efe KS |
2350 | && parse_language->la_language != language_cplus) |
2351 | break; | |
2352 | ||
c906108c SS |
2353 | lexptr += 2; |
2354 | yylval.opcode = tokentab2[i].opcode; | |
37cd5d19 | 2355 | if (in_parse_field && tokentab2[i].token == ARROW) |
65d12d83 | 2356 | last_was_structop = 1; |
c906108c SS |
2357 | return tokentab2[i].token; |
2358 | } | |
2359 | ||
2360 | switch (c = *tokstart) | |
2361 | { | |
2362 | case 0: | |
84f0252a JB |
2363 | /* If we were just scanning the result of a macro expansion, |
2364 | then we need to resume scanning the original text. | |
65d12d83 TT |
2365 | If we're parsing for field name completion, and the previous |
2366 | token allows such completion, return a COMPLETE token. | |
84f0252a JB |
2367 | Otherwise, we were already scanning the original text, and |
2368 | we're really done. */ | |
2369 | if (scanning_macro_expansion ()) | |
2370 | { | |
2371 | finished_macro_expansion (); | |
2372 | goto retry; | |
2373 | } | |
65d12d83 TT |
2374 | else if (saw_name_at_eof) |
2375 | { | |
2376 | saw_name_at_eof = 0; | |
2377 | return COMPLETE; | |
2378 | } | |
2379 | else if (saw_structop) | |
2380 | return COMPLETE; | |
84f0252a JB |
2381 | else |
2382 | return 0; | |
c906108c SS |
2383 | |
2384 | case ' ': | |
2385 | case '\t': | |
2386 | case '\n': | |
2387 | lexptr++; | |
2388 | goto retry; | |
2389 | ||
379a77b5 | 2390 | case '[': |
c906108c SS |
2391 | case '(': |
2392 | paren_depth++; | |
2393 | lexptr++; | |
f2e8016f TT |
2394 | if (parse_language->la_language == language_objc && c == '[') |
2395 | return OBJC_LBRAC; | |
c906108c SS |
2396 | return c; |
2397 | ||
379a77b5 | 2398 | case ']': |
c906108c SS |
2399 | case ')': |
2400 | if (paren_depth == 0) | |
2401 | return 0; | |
2402 | paren_depth--; | |
2403 | lexptr++; | |
2404 | return c; | |
2405 | ||
2406 | case ',': | |
84f0252a JB |
2407 | if (comma_terminates |
2408 | && paren_depth == 0 | |
2409 | && ! scanning_macro_expansion ()) | |
c906108c SS |
2410 | return 0; |
2411 | lexptr++; | |
2412 | return c; | |
2413 | ||
2414 | case '.': | |
2415 | /* Might be a floating point number. */ | |
2416 | if (lexptr[1] < '0' || lexptr[1] > '9') | |
65d12d83 TT |
2417 | { |
2418 | if (in_parse_field) | |
2419 | last_was_structop = 1; | |
2420 | goto symbol; /* Nope, must be a symbol. */ | |
2421 | } | |
c906108c SS |
2422 | /* FALL THRU into number case. */ |
2423 | ||
2424 | case '0': | |
2425 | case '1': | |
2426 | case '2': | |
2427 | case '3': | |
2428 | case '4': | |
2429 | case '5': | |
2430 | case '6': | |
2431 | case '7': | |
2432 | case '8': | |
2433 | case '9': | |
2434 | { | |
2435 | /* It's a number. */ | |
2436 | int got_dot = 0, got_e = 0, toktype; | |
710122da | 2437 | char *p = tokstart; |
c906108c SS |
2438 | int hex = input_radix > 10; |
2439 | ||
2440 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
2441 | { | |
2442 | p += 2; | |
2443 | hex = 1; | |
2444 | } | |
2445 | else if (c == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D')) | |
2446 | { | |
2447 | p += 2; | |
2448 | hex = 0; | |
2449 | } | |
2450 | ||
2451 | for (;; ++p) | |
2452 | { | |
2453 | /* This test includes !hex because 'e' is a valid hex digit | |
2454 | and thus does not indicate a floating point number when | |
2455 | the radix is hex. */ | |
2456 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) | |
2457 | got_dot = got_e = 1; | |
2458 | /* This test does not include !hex, because a '.' always indicates | |
2459 | a decimal floating point number regardless of the radix. */ | |
2460 | else if (!got_dot && *p == '.') | |
2461 | got_dot = 1; | |
2462 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') | |
2463 | && (*p == '-' || *p == '+')) | |
2464 | /* This is the sign of the exponent, not the end of the | |
2465 | number. */ | |
2466 | continue; | |
2467 | /* We will take any letters or digits. parse_number will | |
2468 | complain if past the radix, or if L or U are not final. */ | |
2469 | else if ((*p < '0' || *p > '9') | |
2470 | && ((*p < 'a' || *p > 'z') | |
2471 | && (*p < 'A' || *p > 'Z'))) | |
2472 | break; | |
2473 | } | |
2474 | toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval); | |
2475 | if (toktype == ERROR) | |
2476 | { | |
2477 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
2478 | ||
2479 | memcpy (err_copy, tokstart, p - tokstart); | |
2480 | err_copy[p - tokstart] = 0; | |
001083c6 | 2481 | error (_("Invalid number \"%s\"."), err_copy); |
c906108c SS |
2482 | } |
2483 | lexptr = p; | |
2484 | return toktype; | |
2485 | } | |
2486 | ||
941b2081 JK |
2487 | case '@': |
2488 | { | |
2489 | char *p = &tokstart[1]; | |
2490 | size_t len = strlen ("entry"); | |
2491 | ||
f2e8016f TT |
2492 | if (parse_language->la_language == language_objc) |
2493 | { | |
2494 | size_t len = strlen ("selector"); | |
2495 | ||
2496 | if (strncmp (p, "selector", len) == 0 | |
2497 | && (p[len] == '\0' || isspace (p[len]))) | |
2498 | { | |
2499 | lexptr = p + len; | |
2500 | return SELECTOR; | |
2501 | } | |
2502 | else if (*p == '"') | |
2503 | goto parse_string; | |
2504 | } | |
2505 | ||
941b2081 JK |
2506 | while (isspace (*p)) |
2507 | p++; | |
2508 | if (strncmp (p, "entry", len) == 0 && !isalnum (p[len]) | |
2509 | && p[len] != '_') | |
2510 | { | |
2511 | lexptr = &p[len]; | |
2512 | return ENTRY; | |
2513 | } | |
2514 | } | |
2515 | /* FALLTHRU */ | |
c906108c SS |
2516 | case '+': |
2517 | case '-': | |
2518 | case '*': | |
2519 | case '/': | |
2520 | case '%': | |
2521 | case '|': | |
2522 | case '&': | |
2523 | case '^': | |
2524 | case '~': | |
2525 | case '!': | |
c906108c SS |
2526 | case '<': |
2527 | case '>': | |
c906108c SS |
2528 | case '?': |
2529 | case ':': | |
2530 | case '=': | |
2531 | case '{': | |
2532 | case '}': | |
2533 | symbol: | |
2534 | lexptr++; | |
2535 | return c; | |
2536 | ||
6c7a06a3 TT |
2537 | case 'L': |
2538 | case 'u': | |
2539 | case 'U': | |
2540 | if (tokstart[1] != '"' && tokstart[1] != '\'') | |
2541 | break; | |
2542 | /* Fall through. */ | |
2543 | case '\'': | |
c906108c | 2544 | case '"': |
f2e8016f TT |
2545 | |
2546 | parse_string: | |
6c7a06a3 TT |
2547 | { |
2548 | int host_len; | |
2549 | int result = parse_string_or_char (tokstart, &lexptr, &yylval.tsval, | |
2550 | &host_len); | |
2551 | if (result == CHAR) | |
c906108c | 2552 | { |
6c7a06a3 | 2553 | if (host_len == 0) |
001083c6 | 2554 | error (_("Empty character constant.")); |
6c7a06a3 | 2555 | else if (host_len > 2 && c == '\'') |
c906108c | 2556 | { |
6c7a06a3 TT |
2557 | ++tokstart; |
2558 | namelen = lexptr - tokstart - 1; | |
2559 | goto tryname; | |
c906108c | 2560 | } |
6c7a06a3 | 2561 | else if (host_len > 1) |
001083c6 | 2562 | error (_("Invalid character constant.")); |
c906108c | 2563 | } |
6c7a06a3 TT |
2564 | return result; |
2565 | } | |
c906108c SS |
2566 | } |
2567 | ||
2568 | if (!(c == '_' || c == '$' | |
2569 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
2570 | /* We must have come across a bad character (e.g. ';'). */ | |
001083c6 | 2571 | error (_("Invalid character '%c' in expression."), c); |
c906108c SS |
2572 | |
2573 | /* It's a name. See how long it is. */ | |
2574 | namelen = 0; | |
2575 | for (c = tokstart[namelen]; | |
2576 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
2577 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) | |
2578 | { | |
2579 | /* Template parameter lists are part of the name. | |
2580 | FIXME: This mishandles `print $a<4&&$a>3'. */ | |
2581 | ||
2582 | if (c == '<') | |
4e8f195d TT |
2583 | { |
2584 | if (! is_cast_operator (tokstart, namelen)) | |
2585 | { | |
2586 | /* Scan ahead to get rest of the template specification. Note | |
2587 | that we look ahead only when the '<' adjoins non-whitespace | |
2588 | characters; for comparison expressions, e.g. "a < b > c", | |
2589 | there must be spaces before the '<', etc. */ | |
c906108c | 2590 | |
4e8f195d TT |
2591 | char * p = find_template_name_end (tokstart + namelen); |
2592 | if (p) | |
2593 | namelen = p - tokstart; | |
2594 | } | |
2595 | break; | |
c906108c SS |
2596 | } |
2597 | c = tokstart[++namelen]; | |
2598 | } | |
2599 | ||
84f0252a JB |
2600 | /* The token "if" terminates the expression and is NOT removed from |
2601 | the input stream. It doesn't count if it appears in the | |
2602 | expansion of a macro. */ | |
2603 | if (namelen == 2 | |
2604 | && tokstart[0] == 'i' | |
2605 | && tokstart[1] == 'f' | |
2606 | && ! scanning_macro_expansion ()) | |
c906108c SS |
2607 | { |
2608 | return 0; | |
2609 | } | |
2610 | ||
b6199126 DJ |
2611 | /* For the same reason (breakpoint conditions), "thread N" |
2612 | terminates the expression. "thread" could be an identifier, but | |
2613 | an identifier is never followed by a number without intervening | |
2614 | punctuation. "task" is similar. Handle abbreviations of these, | |
2615 | similarly to breakpoint.c:find_condition_and_thread. */ | |
2616 | if (namelen >= 1 | |
2617 | && (strncmp (tokstart, "thread", namelen) == 0 | |
2618 | || strncmp (tokstart, "task", namelen) == 0) | |
2619 | && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t') | |
2620 | && ! scanning_macro_expansion ()) | |
2621 | { | |
2622 | char *p = tokstart + namelen + 1; | |
2623 | while (*p == ' ' || *p == '\t') | |
2624 | p++; | |
2625 | if (*p >= '0' && *p <= '9') | |
2626 | return 0; | |
2627 | } | |
2628 | ||
c906108c SS |
2629 | lexptr += namelen; |
2630 | ||
2631 | tryname: | |
2632 | ||
c906108c SS |
2633 | yylval.sval.ptr = tokstart; |
2634 | yylval.sval.length = namelen; | |
2635 | ||
ba163c7e TT |
2636 | /* Catch specific keywords. */ |
2637 | copy = copy_name (yylval.sval); | |
2638 | for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++) | |
2639 | if (strcmp (copy, ident_tokens[i].operator) == 0) | |
2640 | { | |
274b54d7 | 2641 | if ((ident_tokens[i].flags & FLAG_CXX) != 0 |
ba163c7e TT |
2642 | && parse_language->la_language != language_cplus) |
2643 | break; | |
2644 | ||
274b54d7 TT |
2645 | if ((ident_tokens[i].flags & FLAG_SHADOW) != 0) |
2646 | { | |
2647 | int is_a_field_of_this = 0; | |
2648 | ||
2649 | if (lookup_symbol (copy, expression_context_block, | |
2650 | VAR_DOMAIN, | |
2651 | (parse_language->la_language == language_cplus | |
2652 | ? &is_a_field_of_this | |
2653 | : NULL)) | |
2654 | != NULL) | |
2655 | { | |
2656 | /* The keyword is shadowed. */ | |
2657 | break; | |
2658 | } | |
2659 | } | |
2660 | ||
ba163c7e TT |
2661 | /* It is ok to always set this, even though we don't always |
2662 | strictly need to. */ | |
2663 | yylval.opcode = ident_tokens[i].opcode; | |
2664 | return ident_tokens[i].token; | |
2665 | } | |
2666 | ||
c906108c | 2667 | if (*tokstart == '$') |
48e32051 TT |
2668 | return VARIABLE; |
2669 | ||
2670 | if (in_parse_field && *lexptr == '\0') | |
2671 | saw_name_at_eof = 1; | |
2672 | return NAME; | |
2673 | } | |
2674 | ||
2675 | /* An object of this type is pushed on a FIFO by the "outer" lexer. */ | |
2676 | typedef struct | |
2677 | { | |
2678 | int token; | |
e707a91d | 2679 | YYSTYPE value; |
48e32051 TT |
2680 | } token_and_value; |
2681 | ||
2682 | DEF_VEC_O (token_and_value); | |
2683 | ||
2684 | /* A FIFO of tokens that have been read but not yet returned to the | |
2685 | parser. */ | |
2686 | static VEC (token_and_value) *token_fifo; | |
2687 | ||
2688 | /* Non-zero if the lexer should return tokens from the FIFO. */ | |
2689 | static int popping; | |
2690 | ||
2691 | /* Temporary storage for c_lex; this holds symbol names as they are | |
2692 | built up. */ | |
2693 | static struct obstack name_obstack; | |
2694 | ||
2695 | /* Classify a NAME token. The contents of the token are in `yylval'. | |
2696 | Updates yylval and returns the new token type. BLOCK is the block | |
2697 | in which lookups start; this can be NULL to mean the global | |
2698 | scope. */ | |
2699 | static int | |
2700 | classify_name (struct block *block) | |
2701 | { | |
2702 | struct symbol *sym; | |
2703 | char *copy; | |
2704 | int is_a_field_of_this = 0; | |
2705 | ||
2706 | copy = copy_name (yylval.sval); | |
2707 | ||
2708 | sym = lookup_symbol (copy, block, VAR_DOMAIN, | |
f2e8016f | 2709 | parse_language->la_name_of_this |
48e32051 TT |
2710 | ? &is_a_field_of_this : (int *) NULL); |
2711 | ||
2712 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
c906108c | 2713 | { |
48e32051 TT |
2714 | yylval.ssym.sym = sym; |
2715 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
2716 | return BLOCKNAME; | |
c906108c | 2717 | } |
48e32051 TT |
2718 | else if (!sym) |
2719 | { | |
2720 | /* See if it's a file name. */ | |
2721 | struct symtab *symtab; | |
c906108c | 2722 | |
48e32051 TT |
2723 | symtab = lookup_symtab (copy); |
2724 | if (symtab) | |
2725 | { | |
2726 | yylval.bval = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
2727 | return FILENAME; | |
2728 | } | |
2729 | } | |
c906108c | 2730 | |
48e32051 TT |
2731 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
2732 | { | |
2733 | yylval.tsym.type = SYMBOL_TYPE (sym); | |
47663de5 | 2734 | return TYPENAME; |
48e32051 | 2735 | } |
c906108c | 2736 | |
48e32051 TT |
2737 | yylval.tsym.type |
2738 | = language_lookup_primitive_type_by_name (parse_language, | |
2739 | parse_gdbarch, copy); | |
2740 | if (yylval.tsym.type != NULL) | |
2741 | return TYPENAME; | |
2742 | ||
f2e8016f TT |
2743 | /* See if it's an ObjC classname. */ |
2744 | if (parse_language->la_language == language_objc && !sym) | |
2745 | { | |
2746 | CORE_ADDR Class = lookup_objc_class (parse_gdbarch, copy); | |
2747 | if (Class) | |
2748 | { | |
2749 | yylval.class.class = Class; | |
826f0041 TT |
2750 | sym = lookup_struct_typedef (copy, expression_context_block, 1); |
2751 | if (sym) | |
f2e8016f TT |
2752 | yylval.class.type = SYMBOL_TYPE (sym); |
2753 | return CLASSNAME; | |
2754 | } | |
2755 | } | |
2756 | ||
48e32051 TT |
2757 | /* Input names that aren't symbols but ARE valid hex numbers, when |
2758 | the input radix permits them, can be names or numbers depending | |
2759 | on the parse. Note we support radixes > 16 here. */ | |
2760 | if (!sym | |
2761 | && ((copy[0] >= 'a' && copy[0] < 'a' + input_radix - 10) | |
2762 | || (copy[0] >= 'A' && copy[0] < 'A' + input_radix - 10))) | |
2763 | { | |
2764 | YYSTYPE newlval; /* Its value is ignored. */ | |
2765 | int hextype = parse_number (copy, yylval.sval.length, 0, &newlval); | |
2766 | if (hextype == INT) | |
2767 | { | |
2768 | yylval.ssym.sym = sym; | |
2769 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
2770 | return NAME_OR_INT; | |
2771 | } | |
2772 | } | |
2773 | ||
2774 | /* Any other kind of symbol */ | |
2775 | yylval.ssym.sym = sym; | |
2776 | yylval.ssym.is_a_field_of_this = is_a_field_of_this; | |
7322dca9 SW |
2777 | |
2778 | if (sym == NULL | |
2779 | && parse_language->la_language == language_cplus | |
450ca57c | 2780 | && !is_a_field_of_this |
7322dca9 SW |
2781 | && !lookup_minimal_symbol (copy, NULL, NULL)) |
2782 | return UNKNOWN_CPP_NAME; | |
2783 | ||
48e32051 TT |
2784 | return NAME; |
2785 | } | |
c906108c | 2786 | |
48e32051 TT |
2787 | /* Like classify_name, but used by the inner loop of the lexer, when a |
2788 | name might have already been seen. FIRST_NAME is true if the token | |
50af5481 JK |
2789 | in `yylval' is the first component of a name, false otherwise. */ |
2790 | ||
48e32051 TT |
2791 | static int |
2792 | classify_inner_name (struct block *block, int first_name) | |
2793 | { | |
2794 | struct type *type, *new_type; | |
2795 | char *copy; | |
2796 | ||
2797 | if (first_name) | |
2798 | return classify_name (block); | |
2799 | ||
2800 | type = check_typedef (yylval.tsym.type); | |
2801 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT | |
2802 | && TYPE_CODE (type) != TYPE_CODE_UNION | |
2803 | && TYPE_CODE (type) != TYPE_CODE_NAMESPACE) | |
50af5481 | 2804 | return ERROR; |
48e32051 TT |
2805 | |
2806 | copy = copy_name (yylval.tsym.stoken); | |
50af5481 JK |
2807 | yylval.ssym.sym = cp_lookup_nested_symbol (yylval.tsym.type, copy, block); |
2808 | if (yylval.ssym.sym == NULL) | |
2809 | return ERROR; | |
2810 | ||
2811 | switch (SYMBOL_CLASS (yylval.ssym.sym)) | |
2812 | { | |
2813 | case LOC_BLOCK: | |
2814 | case LOC_LABEL: | |
2815 | return ERROR; | |
48e32051 | 2816 | |
50af5481 JK |
2817 | case LOC_TYPEDEF: |
2818 | yylval.tsym.type = SYMBOL_TYPE (yylval.ssym.sym);; | |
2819 | return TYPENAME; | |
48e32051 | 2820 | |
50af5481 JK |
2821 | default: |
2822 | yylval.ssym.is_a_field_of_this = 0; | |
2823 | return NAME; | |
2824 | } | |
2825 | internal_error (__FILE__, __LINE__, _("not reached")); | |
48e32051 TT |
2826 | } |
2827 | ||
2828 | /* The outer level of a two-level lexer. This calls the inner lexer | |
2829 | to return tokens. It then either returns these tokens, or | |
2830 | aggregates them into a larger token. This lets us work around a | |
2831 | problem in our parsing approach, where the parser could not | |
2832 | distinguish between qualified names and qualified types at the | |
2833 | right point. | |
2834 | ||
2835 | This approach is still not ideal, because it mishandles template | |
2836 | types. See the comment in lex_one_token for an example. However, | |
2837 | this is still an improvement over the earlier approach, and will | |
2838 | suffice until we move to better parsing technology. */ | |
2839 | static int | |
2840 | yylex (void) | |
2841 | { | |
2842 | token_and_value current; | |
48e32051 TT |
2843 | int first_was_coloncolon, last_was_coloncolon, first_iter; |
2844 | ||
2845 | if (popping && !VEC_empty (token_and_value, token_fifo)) | |
2846 | { | |
2847 | token_and_value tv = *VEC_index (token_and_value, token_fifo, 0); | |
2848 | VEC_ordered_remove (token_and_value, token_fifo, 0); | |
2849 | yylval = tv.value; | |
2850 | return tv.token; | |
2851 | } | |
2852 | popping = 0; | |
2853 | ||
2854 | current.token = lex_one_token (); | |
2855 | if (current.token == NAME) | |
2856 | current.token = classify_name (expression_context_block); | |
2857 | if (parse_language->la_language != language_cplus | |
2858 | || (current.token != TYPENAME && current.token != COLONCOLON)) | |
2859 | return current.token; | |
2860 | ||
2861 | first_was_coloncolon = current.token == COLONCOLON; | |
2862 | last_was_coloncolon = first_was_coloncolon; | |
2863 | obstack_free (&name_obstack, obstack_base (&name_obstack)); | |
2864 | if (!last_was_coloncolon) | |
2865 | obstack_grow (&name_obstack, yylval.sval.ptr, yylval.sval.length); | |
2866 | current.value = yylval; | |
2867 | first_iter = 1; | |
2868 | while (1) | |
2869 | { | |
2870 | token_and_value next; | |
2871 | ||
2872 | next.token = lex_one_token (); | |
2873 | next.value = yylval; | |
2874 | ||
2875 | if (next.token == NAME && last_was_coloncolon) | |
2876 | { | |
2877 | int classification; | |
2878 | ||
2879 | classification = classify_inner_name (first_was_coloncolon | |
2880 | ? NULL | |
2881 | : expression_context_block, | |
2882 | first_iter); | |
2883 | /* We keep going until we either run out of names, or until | |
2884 | we have a qualified name which is not a type. */ | |
50af5481 | 2885 | if (classification != TYPENAME && classification != NAME) |
48e32051 TT |
2886 | { |
2887 | /* Push the final component and leave the loop. */ | |
2888 | VEC_safe_push (token_and_value, token_fifo, &next); | |
2889 | break; | |
2890 | } | |
2891 | ||
2892 | /* Update the partial name we are constructing. */ | |
2893 | if (!first_iter) | |
2894 | { | |
2895 | /* We don't want to put a leading "::" into the name. */ | |
2896 | obstack_grow_str (&name_obstack, "::"); | |
2897 | } | |
2898 | obstack_grow (&name_obstack, next.value.sval.ptr, | |
2899 | next.value.sval.length); | |
2900 | ||
2901 | yylval.sval.ptr = obstack_base (&name_obstack); | |
2902 | yylval.sval.length = obstack_object_size (&name_obstack); | |
2903 | current.value = yylval; | |
2904 | current.token = classification; | |
2905 | ||
2906 | last_was_coloncolon = 0; | |
2907 | } | |
2908 | else if (next.token == COLONCOLON && !last_was_coloncolon) | |
2909 | last_was_coloncolon = 1; | |
2910 | else | |
2911 | { | |
2912 | /* We've reached the end of the name. */ | |
2913 | VEC_safe_push (token_and_value, token_fifo, &next); | |
2914 | break; | |
2915 | } | |
2916 | ||
2917 | first_iter = 0; | |
2918 | } | |
2919 | ||
2920 | popping = 1; | |
2921 | ||
2922 | /* If we ended with a "::", insert it too. */ | |
2923 | if (last_was_coloncolon) | |
2924 | { | |
2925 | token_and_value cc; | |
2926 | memset (&cc, 0, sizeof (token_and_value)); | |
af53d231 | 2927 | if (first_was_coloncolon && first_iter) |
48e32051 TT |
2928 | { |
2929 | yylval = cc.value; | |
2930 | return COLONCOLON; | |
2931 | } | |
2932 | cc.token = COLONCOLON; | |
2933 | VEC_safe_insert (token_and_value, token_fifo, 0, &cc); | |
2934 | } | |
2935 | ||
2936 | yylval = current.value; | |
2937 | yylval.sval.ptr = obstack_copy0 (&expansion_obstack, | |
2938 | yylval.sval.ptr, | |
2939 | yylval.sval.length); | |
2940 | return current.token; | |
c906108c SS |
2941 | } |
2942 | ||
65d12d83 TT |
2943 | int |
2944 | c_parse (void) | |
2945 | { | |
7c8adf68 TT |
2946 | int result; |
2947 | struct cleanup *back_to = make_cleanup (free_current_contents, | |
2948 | &expression_macro_scope); | |
2949 | ||
2950 | /* Set up the scope for macro expansion. */ | |
2951 | expression_macro_scope = NULL; | |
2952 | ||
2953 | if (expression_context_block) | |
2954 | expression_macro_scope | |
2955 | = sal_macro_scope (find_pc_line (expression_context_pc, 0)); | |
2956 | else | |
2957 | expression_macro_scope = default_macro_scope (); | |
2958 | if (! expression_macro_scope) | |
2959 | expression_macro_scope = user_macro_scope (); | |
2960 | ||
2961 | /* Initialize macro expansion code. */ | |
2962 | obstack_init (&expansion_obstack); | |
2963 | gdb_assert (! macro_original_text); | |
2964 | make_cleanup (scan_macro_cleanup, 0); | |
2965 | ||
92981e24 TT |
2966 | make_cleanup_restore_integer (&yydebug); |
2967 | yydebug = parser_debug; | |
2968 | ||
7c8adf68 | 2969 | /* Initialize some state used by the lexer. */ |
65d12d83 TT |
2970 | last_was_structop = 0; |
2971 | saw_name_at_eof = 0; | |
7c8adf68 | 2972 | |
48e32051 TT |
2973 | VEC_free (token_and_value, token_fifo); |
2974 | popping = 0; | |
2975 | obstack_init (&name_obstack); | |
2976 | make_cleanup_obstack_free (&name_obstack); | |
2977 | ||
7c8adf68 TT |
2978 | result = yyparse (); |
2979 | do_cleanups (back_to); | |
2980 | return result; | |
65d12d83 TT |
2981 | } |
2982 | ||
7c8adf68 | 2983 | |
c906108c | 2984 | void |
68c1b02d | 2985 | yyerror (char *msg) |
c906108c | 2986 | { |
665132f9 MS |
2987 | if (prev_lexptr) |
2988 | lexptr = prev_lexptr; | |
2989 | ||
001083c6 | 2990 | error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr); |
c906108c | 2991 | } |