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373a8247 | 1 | /* YACC parser for Pascal expressions, for GDB. |
e2882c85 | 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
373a8247 | 3 | |
5b1ba0e5 | 4 | This file is part of GDB. |
373a8247 | 5 | |
5b1ba0e5 NS |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
373a8247 | 10 | |
5b1ba0e5 NS |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
373a8247 | 15 | |
5b1ba0e5 NS |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
373a8247 PM |
18 | |
19 | /* This file is derived from c-exp.y */ | |
20 | ||
21 | /* Parse a Pascal expression from text in a string, | |
22 | and return the result as a struct expression pointer. | |
23 | That structure contains arithmetic operations in reverse polish, | |
24 | with constants represented by operations that are followed by special data. | |
25 | See expression.h for the details of the format. | |
26 | What is important here is that it can be built up sequentially | |
27 | during the process of parsing; the lower levels of the tree always | |
28 | come first in the result. | |
29 | ||
30 | Note that malloc's and realloc's in this file are transformed to | |
31 | xmalloc and xrealloc respectively by the same sed command in the | |
32 | makefile that remaps any other malloc/realloc inserted by the parser | |
33 | generator. Doing this with #defines and trying to control the interaction | |
34 | with include files (<malloc.h> and <stdlib.h> for example) just became | |
35 | too messy, particularly when such includes can be inserted at random | |
36 | times by the parser generator. */ | |
37 | ||
29f319b8 | 38 | /* Known bugs or limitations: |
373a8247 PM |
39 | - pascal string operations are not supported at all. |
40 | - there are some problems with boolean types. | |
41 | - Pascal type hexadecimal constants are not supported | |
42 | because they conflict with the internal variables format. | |
0df8b418 | 43 | Probably also lots of other problems, less well defined PM. */ |
373a8247 PM |
44 | %{ |
45 | ||
46 | #include "defs.h" | |
373a8247 PM |
47 | #include <ctype.h> |
48 | #include "expression.h" | |
49 | #include "value.h" | |
50 | #include "parser-defs.h" | |
51 | #include "language.h" | |
52 | #include "p-lang.h" | |
53 | #include "bfd.h" /* Required by objfiles.h. */ | |
54 | #include "symfile.h" /* Required by objfiles.h. */ | |
0df8b418 | 55 | #include "objfiles.h" /* For have_full_symbols and have_partial_symbols. */ |
fe898f56 | 56 | #include "block.h" |
d7561cbb | 57 | #include "completer.h" |
373a8247 | 58 | |
410a0ff2 | 59 | #define parse_type(ps) builtin_type (parse_gdbarch (ps)) |
3e79cecf | 60 | |
b3f11165 PA |
61 | /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, |
62 | etc). */ | |
63 | #define GDB_YY_REMAP_PREFIX pascal_ | |
64 | #include "yy-remap.h" | |
f461f5cf | 65 | |
410a0ff2 SDJ |
66 | /* The state of the parser, used internally when we are parsing the |
67 | expression. */ | |
68 | ||
69 | static struct parser_state *pstate = NULL; | |
70 | ||
373a8247 PM |
71 | int yyparse (void); |
72 | ||
73 | static int yylex (void); | |
74 | ||
a121b7c1 | 75 | void yyerror (const char *); |
373a8247 | 76 | |
793156e6 | 77 | static char *uptok (const char *, int); |
373a8247 PM |
78 | %} |
79 | ||
80 | /* Although the yacc "value" of an expression is not used, | |
81 | since the result is stored in the structure being created, | |
82 | other node types do have values. */ | |
83 | ||
84 | %union | |
85 | { | |
86 | LONGEST lval; | |
87 | struct { | |
88 | LONGEST val; | |
89 | struct type *type; | |
90 | } typed_val_int; | |
91 | struct { | |
edd079d9 | 92 | gdb_byte val[16]; |
373a8247 PM |
93 | struct type *type; |
94 | } typed_val_float; | |
95 | struct symbol *sym; | |
96 | struct type *tval; | |
97 | struct stoken sval; | |
98 | struct ttype tsym; | |
99 | struct symtoken ssym; | |
100 | int voidval; | |
3977b71f | 101 | const struct block *bval; |
373a8247 PM |
102 | enum exp_opcode opcode; |
103 | struct internalvar *ivar; | |
104 | ||
105 | struct type **tvec; | |
106 | int *ivec; | |
107 | } | |
108 | ||
109 | %{ | |
110 | /* YYSTYPE gets defined by %union */ | |
410a0ff2 SDJ |
111 | static int parse_number (struct parser_state *, |
112 | const char *, int, int, YYSTYPE *); | |
9819c6c8 PM |
113 | |
114 | static struct type *current_type; | |
a5a44b53 | 115 | static struct internalvar *intvar; |
4ae0885a | 116 | static int leftdiv_is_integer; |
b9362cc7 AC |
117 | static void push_current_type (void); |
118 | static void pop_current_type (void); | |
9819c6c8 | 119 | static int search_field; |
373a8247 PM |
120 | %} |
121 | ||
9819c6c8 | 122 | %type <voidval> exp exp1 type_exp start normal_start variable qualified_name |
373a8247 PM |
123 | %type <tval> type typebase |
124 | /* %type <bval> block */ | |
125 | ||
126 | /* Fancy type parsing. */ | |
127 | %type <tval> ptype | |
128 | ||
129 | %token <typed_val_int> INT | |
130 | %token <typed_val_float> FLOAT | |
131 | ||
132 | /* Both NAME and TYPENAME tokens represent symbols in the input, | |
133 | and both convey their data as strings. | |
134 | But a TYPENAME is a string that happens to be defined as a typedef | |
135 | or builtin type name (such as int or char) | |
136 | and a NAME is any other symbol. | |
137 | Contexts where this distinction is not important can use the | |
138 | nonterminal "name", which matches either NAME or TYPENAME. */ | |
139 | ||
6ced1581 | 140 | %token <sval> STRING |
9819c6c8 | 141 | %token <sval> FIELDNAME |
a5a44b53 | 142 | %token <voidval> COMPLETE |
0df8b418 | 143 | %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */ |
373a8247 PM |
144 | %token <tsym> TYPENAME |
145 | %type <sval> name | |
146 | %type <ssym> name_not_typename | |
147 | ||
148 | /* A NAME_OR_INT is a symbol which is not known in the symbol table, | |
149 | but which would parse as a valid number in the current input radix. | |
150 | E.g. "c" when input_radix==16. Depending on the parse, it will be | |
151 | turned into a name or into a number. */ | |
152 | ||
153 | %token <ssym> NAME_OR_INT | |
154 | ||
155 | %token STRUCT CLASS SIZEOF COLONCOLON | |
156 | %token ERROR | |
157 | ||
158 | /* Special type cases, put in to allow the parser to distinguish different | |
159 | legal basetypes. */ | |
160 | ||
161 | %token <voidval> VARIABLE | |
162 | ||
163 | ||
164 | /* Object pascal */ | |
165 | %token THIS | |
2692ddb3 | 166 | %token <lval> TRUEKEYWORD FALSEKEYWORD |
373a8247 PM |
167 | |
168 | %left ',' | |
169 | %left ABOVE_COMMA | |
170 | %right ASSIGN | |
171 | %left NOT | |
172 | %left OR | |
173 | %left XOR | |
174 | %left ANDAND | |
175 | %left '=' NOTEQUAL | |
176 | %left '<' '>' LEQ GEQ | |
177 | %left LSH RSH DIV MOD | |
178 | %left '@' | |
179 | %left '+' '-' | |
180 | %left '*' '/' | |
181 | %right UNARY INCREMENT DECREMENT | |
182 | %right ARROW '.' '[' '(' | |
29f319b8 | 183 | %left '^' |
373a8247 PM |
184 | %token <ssym> BLOCKNAME |
185 | %type <bval> block | |
186 | %left COLONCOLON | |
187 | ||
188 | \f | |
189 | %% | |
190 | ||
9819c6c8 | 191 | start : { current_type = NULL; |
a5a44b53 | 192 | intvar = NULL; |
9819c6c8 | 193 | search_field = 0; |
4ae0885a | 194 | leftdiv_is_integer = 0; |
9819c6c8 | 195 | } |
ef944135 TR |
196 | normal_start {} |
197 | ; | |
9819c6c8 PM |
198 | |
199 | normal_start : | |
200 | exp1 | |
373a8247 PM |
201 | | type_exp |
202 | ; | |
203 | ||
204 | type_exp: type | |
410a0ff2 SDJ |
205 | { write_exp_elt_opcode (pstate, OP_TYPE); |
206 | write_exp_elt_type (pstate, $1); | |
207 | write_exp_elt_opcode (pstate, OP_TYPE); | |
9819c6c8 | 208 | current_type = $1; } ; |
373a8247 PM |
209 | |
210 | /* Expressions, including the comma operator. */ | |
211 | exp1 : exp | |
212 | | exp1 ',' exp | |
410a0ff2 | 213 | { write_exp_elt_opcode (pstate, BINOP_COMMA); } |
373a8247 PM |
214 | ; |
215 | ||
216 | /* Expressions, not including the comma operator. */ | |
217 | exp : exp '^' %prec UNARY | |
410a0ff2 | 218 | { write_exp_elt_opcode (pstate, UNOP_IND); |
6ced1581 | 219 | if (current_type) |
9819c6c8 | 220 | current_type = TYPE_TARGET_TYPE (current_type); } |
ef944135 | 221 | ; |
373a8247 PM |
222 | |
223 | exp : '@' exp %prec UNARY | |
410a0ff2 | 224 | { write_exp_elt_opcode (pstate, UNOP_ADDR); |
9819c6c8 PM |
225 | if (current_type) |
226 | current_type = TYPE_POINTER_TYPE (current_type); } | |
ef944135 | 227 | ; |
373a8247 PM |
228 | |
229 | exp : '-' exp %prec UNARY | |
410a0ff2 | 230 | { write_exp_elt_opcode (pstate, UNOP_NEG); } |
373a8247 PM |
231 | ; |
232 | ||
233 | exp : NOT exp %prec UNARY | |
410a0ff2 | 234 | { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); } |
373a8247 PM |
235 | ; |
236 | ||
237 | exp : INCREMENT '(' exp ')' %prec UNARY | |
410a0ff2 | 238 | { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); } |
373a8247 PM |
239 | ; |
240 | ||
241 | exp : DECREMENT '(' exp ')' %prec UNARY | |
410a0ff2 | 242 | { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT); } |
373a8247 PM |
243 | ; |
244 | ||
a5a44b53 PM |
245 | |
246 | field_exp : exp '.' %prec UNARY | |
6ced1581 | 247 | { search_field = 1; } |
a5a44b53 PM |
248 | ; |
249 | ||
6ced1581 | 250 | exp : field_exp FIELDNAME |
410a0ff2 SDJ |
251 | { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
252 | write_exp_string (pstate, $2); | |
253 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
6ced1581 | 254 | search_field = 0; |
a5a44b53 | 255 | if (current_type) |
6ced1581 | 256 | { |
a5a44b53 PM |
257 | while (TYPE_CODE (current_type) |
258 | == TYPE_CODE_PTR) | |
259 | current_type = | |
260 | TYPE_TARGET_TYPE (current_type); | |
261 | current_type = lookup_struct_elt_type ( | |
262 | current_type, $2.ptr, 0); | |
263 | } | |
264 | } | |
6ced1581 PM |
265 | ; |
266 | ||
a5a44b53 PM |
267 | |
268 | exp : field_exp name | |
410a0ff2 SDJ |
269 | { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
270 | write_exp_string (pstate, $2); | |
271 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
6ced1581 | 272 | search_field = 0; |
9819c6c8 | 273 | if (current_type) |
6ced1581 | 274 | { |
a5a44b53 PM |
275 | while (TYPE_CODE (current_type) |
276 | == TYPE_CODE_PTR) | |
277 | current_type = | |
278 | TYPE_TARGET_TYPE (current_type); | |
9819c6c8 | 279 | current_type = lookup_struct_elt_type ( |
a5a44b53 PM |
280 | current_type, $2.ptr, 0); |
281 | } | |
282 | } | |
283 | ; | |
8662d513 | 284 | exp : field_exp name COMPLETE |
410a0ff2 SDJ |
285 | { mark_struct_expression (pstate); |
286 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
287 | write_exp_string (pstate, $2); | |
288 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
8662d513 | 289 | ; |
a5a44b53 PM |
290 | exp : field_exp COMPLETE |
291 | { struct stoken s; | |
410a0ff2 SDJ |
292 | mark_struct_expression (pstate); |
293 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
a5a44b53 PM |
294 | s.ptr = ""; |
295 | s.length = 0; | |
410a0ff2 SDJ |
296 | write_exp_string (pstate, s); |
297 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); } | |
a5a44b53 PM |
298 | ; |
299 | ||
9819c6c8 | 300 | exp : exp '[' |
0df8b418 | 301 | /* We need to save the current_type value. */ |
0d5cff50 | 302 | { const char *arrayname; |
9819c6c8 PM |
303 | int arrayfieldindex; |
304 | arrayfieldindex = is_pascal_string_type ( | |
305 | current_type, NULL, NULL, | |
6ced1581 PM |
306 | NULL, NULL, &arrayname); |
307 | if (arrayfieldindex) | |
9819c6c8 PM |
308 | { |
309 | struct stoken stringsval; | |
d7561cbb KS |
310 | char *buf; |
311 | ||
224c3ddb | 312 | buf = (char *) alloca (strlen (arrayname) + 1); |
d7561cbb | 313 | stringsval.ptr = buf; |
9819c6c8 | 314 | stringsval.length = strlen (arrayname); |
d7561cbb | 315 | strcpy (buf, arrayname); |
9819c6c8 | 316 | current_type = TYPE_FIELD_TYPE (current_type, |
6ced1581 | 317 | arrayfieldindex - 1); |
410a0ff2 SDJ |
318 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); |
319 | write_exp_string (pstate, stringsval); | |
320 | write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); | |
9819c6c8 PM |
321 | } |
322 | push_current_type (); } | |
323 | exp1 ']' | |
324 | { pop_current_type (); | |
410a0ff2 | 325 | write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); |
9819c6c8 PM |
326 | if (current_type) |
327 | current_type = TYPE_TARGET_TYPE (current_type); } | |
ef944135 | 328 | ; |
373a8247 PM |
329 | |
330 | exp : exp '(' | |
331 | /* This is to save the value of arglist_len | |
332 | being accumulated by an outer function call. */ | |
9819c6c8 PM |
333 | { push_current_type (); |
334 | start_arglist (); } | |
373a8247 | 335 | arglist ')' %prec ARROW |
410a0ff2 SDJ |
336 | { write_exp_elt_opcode (pstate, OP_FUNCALL); |
337 | write_exp_elt_longcst (pstate, | |
338 | (LONGEST) end_arglist ()); | |
339 | write_exp_elt_opcode (pstate, OP_FUNCALL); | |
4ae0885a PM |
340 | pop_current_type (); |
341 | if (current_type) | |
342 | current_type = TYPE_TARGET_TYPE (current_type); | |
343 | } | |
373a8247 PM |
344 | ; |
345 | ||
346 | arglist : | |
347 | | exp | |
348 | { arglist_len = 1; } | |
349 | | arglist ',' exp %prec ABOVE_COMMA | |
350 | { arglist_len++; } | |
351 | ; | |
352 | ||
353 | exp : type '(' exp ')' %prec UNARY | |
fd0e9d45 PM |
354 | { if (current_type) |
355 | { | |
356 | /* Allow automatic dereference of classes. */ | |
357 | if ((TYPE_CODE (current_type) == TYPE_CODE_PTR) | |
4753d33b DE |
358 | && (TYPE_CODE (TYPE_TARGET_TYPE (current_type)) == TYPE_CODE_STRUCT) |
359 | && (TYPE_CODE ($1) == TYPE_CODE_STRUCT)) | |
410a0ff2 | 360 | write_exp_elt_opcode (pstate, UNOP_IND); |
fd0e9d45 | 361 | } |
410a0ff2 SDJ |
362 | write_exp_elt_opcode (pstate, UNOP_CAST); |
363 | write_exp_elt_type (pstate, $1); | |
364 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
9819c6c8 | 365 | current_type = $1; } |
373a8247 PM |
366 | ; |
367 | ||
368 | exp : '(' exp1 ')' | |
369 | { } | |
370 | ; | |
371 | ||
372 | /* Binary operators in order of decreasing precedence. */ | |
373 | ||
374 | exp : exp '*' exp | |
410a0ff2 | 375 | { write_exp_elt_opcode (pstate, BINOP_MUL); } |
373a8247 PM |
376 | ; |
377 | ||
4ae0885a PM |
378 | exp : exp '/' { |
379 | if (current_type && is_integral_type (current_type)) | |
380 | leftdiv_is_integer = 1; | |
6ced1581 | 381 | } |
4ae0885a | 382 | exp |
6ced1581 | 383 | { |
4ae0885a PM |
384 | if (leftdiv_is_integer && current_type |
385 | && is_integral_type (current_type)) | |
386 | { | |
410a0ff2 SDJ |
387 | write_exp_elt_opcode (pstate, UNOP_CAST); |
388 | write_exp_elt_type (pstate, | |
389 | parse_type (pstate) | |
390 | ->builtin_long_double); | |
391 | current_type | |
392 | = parse_type (pstate)->builtin_long_double; | |
393 | write_exp_elt_opcode (pstate, UNOP_CAST); | |
4ae0885a PM |
394 | leftdiv_is_integer = 0; |
395 | } | |
396 | ||
410a0ff2 | 397 | write_exp_elt_opcode (pstate, BINOP_DIV); |
4ae0885a | 398 | } |
373a8247 PM |
399 | ; |
400 | ||
401 | exp : exp DIV exp | |
410a0ff2 | 402 | { write_exp_elt_opcode (pstate, BINOP_INTDIV); } |
373a8247 PM |
403 | ; |
404 | ||
405 | exp : exp MOD exp | |
410a0ff2 | 406 | { write_exp_elt_opcode (pstate, BINOP_REM); } |
373a8247 PM |
407 | ; |
408 | ||
409 | exp : exp '+' exp | |
410a0ff2 | 410 | { write_exp_elt_opcode (pstate, BINOP_ADD); } |
373a8247 PM |
411 | ; |
412 | ||
413 | exp : exp '-' exp | |
410a0ff2 | 414 | { write_exp_elt_opcode (pstate, BINOP_SUB); } |
373a8247 PM |
415 | ; |
416 | ||
417 | exp : exp LSH exp | |
410a0ff2 | 418 | { write_exp_elt_opcode (pstate, BINOP_LSH); } |
373a8247 PM |
419 | ; |
420 | ||
421 | exp : exp RSH exp | |
410a0ff2 | 422 | { write_exp_elt_opcode (pstate, BINOP_RSH); } |
373a8247 PM |
423 | ; |
424 | ||
425 | exp : exp '=' exp | |
410a0ff2 SDJ |
426 | { write_exp_elt_opcode (pstate, BINOP_EQUAL); |
427 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 428 | } |
373a8247 PM |
429 | ; |
430 | ||
431 | exp : exp NOTEQUAL exp | |
410a0ff2 SDJ |
432 | { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); |
433 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 434 | } |
373a8247 PM |
435 | ; |
436 | ||
437 | exp : exp LEQ exp | |
410a0ff2 SDJ |
438 | { write_exp_elt_opcode (pstate, BINOP_LEQ); |
439 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 440 | } |
373a8247 PM |
441 | ; |
442 | ||
443 | exp : exp GEQ exp | |
410a0ff2 SDJ |
444 | { write_exp_elt_opcode (pstate, BINOP_GEQ); |
445 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 446 | } |
373a8247 PM |
447 | ; |
448 | ||
449 | exp : exp '<' exp | |
410a0ff2 SDJ |
450 | { write_exp_elt_opcode (pstate, BINOP_LESS); |
451 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 452 | } |
373a8247 PM |
453 | ; |
454 | ||
455 | exp : exp '>' exp | |
410a0ff2 SDJ |
456 | { write_exp_elt_opcode (pstate, BINOP_GTR); |
457 | current_type = parse_type (pstate)->builtin_bool; | |
4ae0885a | 458 | } |
373a8247 PM |
459 | ; |
460 | ||
461 | exp : exp ANDAND exp | |
410a0ff2 | 462 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); } |
373a8247 PM |
463 | ; |
464 | ||
465 | exp : exp XOR exp | |
410a0ff2 | 466 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); } |
373a8247 PM |
467 | ; |
468 | ||
469 | exp : exp OR exp | |
410a0ff2 | 470 | { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); } |
373a8247 PM |
471 | ; |
472 | ||
473 | exp : exp ASSIGN exp | |
410a0ff2 | 474 | { write_exp_elt_opcode (pstate, BINOP_ASSIGN); } |
373a8247 PM |
475 | ; |
476 | ||
2692ddb3 | 477 | exp : TRUEKEYWORD |
410a0ff2 SDJ |
478 | { write_exp_elt_opcode (pstate, OP_BOOL); |
479 | write_exp_elt_longcst (pstate, (LONGEST) $1); | |
480 | current_type = parse_type (pstate)->builtin_bool; | |
481 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
373a8247 PM |
482 | ; |
483 | ||
2692ddb3 | 484 | exp : FALSEKEYWORD |
410a0ff2 SDJ |
485 | { write_exp_elt_opcode (pstate, OP_BOOL); |
486 | write_exp_elt_longcst (pstate, (LONGEST) $1); | |
487 | current_type = parse_type (pstate)->builtin_bool; | |
488 | write_exp_elt_opcode (pstate, OP_BOOL); } | |
373a8247 PM |
489 | ; |
490 | ||
491 | exp : INT | |
410a0ff2 SDJ |
492 | { write_exp_elt_opcode (pstate, OP_LONG); |
493 | write_exp_elt_type (pstate, $1.type); | |
4ae0885a | 494 | current_type = $1.type; |
410a0ff2 SDJ |
495 | write_exp_elt_longcst (pstate, (LONGEST)($1.val)); |
496 | write_exp_elt_opcode (pstate, OP_LONG); } | |
373a8247 PM |
497 | ; |
498 | ||
499 | exp : NAME_OR_INT | |
500 | { YYSTYPE val; | |
410a0ff2 | 501 | parse_number (pstate, $1.stoken.ptr, |
0df8b418 | 502 | $1.stoken.length, 0, &val); |
410a0ff2 SDJ |
503 | write_exp_elt_opcode (pstate, OP_LONG); |
504 | write_exp_elt_type (pstate, val.typed_val_int.type); | |
4ae0885a | 505 | current_type = val.typed_val_int.type; |
410a0ff2 | 506 | write_exp_elt_longcst (pstate, (LONGEST) |
0df8b418 | 507 | val.typed_val_int.val); |
410a0ff2 | 508 | write_exp_elt_opcode (pstate, OP_LONG); |
373a8247 PM |
509 | } |
510 | ; | |
511 | ||
512 | ||
513 | exp : FLOAT | |
edd079d9 | 514 | { write_exp_elt_opcode (pstate, OP_FLOAT); |
410a0ff2 | 515 | write_exp_elt_type (pstate, $1.type); |
4ae0885a | 516 | current_type = $1.type; |
edd079d9 UW |
517 | write_exp_elt_floatcst (pstate, $1.val); |
518 | write_exp_elt_opcode (pstate, OP_FLOAT); } | |
373a8247 PM |
519 | ; |
520 | ||
521 | exp : variable | |
522 | ; | |
523 | ||
524 | exp : VARIABLE | |
a5a44b53 PM |
525 | /* Already written by write_dollar_variable. |
526 | Handle current_type. */ | |
527 | { if (intvar) { | |
528 | struct value * val, * mark; | |
529 | ||
530 | mark = value_mark (); | |
410a0ff2 | 531 | val = value_of_internalvar (parse_gdbarch (pstate), |
a5a44b53 PM |
532 | intvar); |
533 | current_type = value_type (val); | |
534 | value_release_to_mark (mark); | |
535 | } | |
536 | } | |
537 | ; | |
373a8247 PM |
538 | |
539 | exp : SIZEOF '(' type ')' %prec UNARY | |
410a0ff2 SDJ |
540 | { write_exp_elt_opcode (pstate, OP_LONG); |
541 | write_exp_elt_type (pstate, | |
542 | parse_type (pstate)->builtin_int); | |
543 | current_type = parse_type (pstate)->builtin_int; | |
f168693b | 544 | $3 = check_typedef ($3); |
410a0ff2 SDJ |
545 | write_exp_elt_longcst (pstate, |
546 | (LONGEST) TYPE_LENGTH ($3)); | |
547 | write_exp_elt_opcode (pstate, OP_LONG); } | |
373a8247 PM |
548 | ; |
549 | ||
28e176a6 | 550 | exp : SIZEOF '(' exp ')' %prec UNARY |
410a0ff2 SDJ |
551 | { write_exp_elt_opcode (pstate, UNOP_SIZEOF); |
552 | current_type = parse_type (pstate)->builtin_int; } | |
6ced1581 | 553 | |
373a8247 PM |
554 | exp : STRING |
555 | { /* C strings are converted into array constants with | |
556 | an explicit null byte added at the end. Thus | |
557 | the array upper bound is the string length. | |
558 | There is no such thing in C as a completely empty | |
0df8b418 | 559 | string. */ |
d7561cbb KS |
560 | const char *sp = $1.ptr; int count = $1.length; |
561 | ||
373a8247 PM |
562 | while (count-- > 0) |
563 | { | |
410a0ff2 SDJ |
564 | write_exp_elt_opcode (pstate, OP_LONG); |
565 | write_exp_elt_type (pstate, | |
566 | parse_type (pstate) | |
567 | ->builtin_char); | |
568 | write_exp_elt_longcst (pstate, | |
569 | (LONGEST) (*sp++)); | |
570 | write_exp_elt_opcode (pstate, OP_LONG); | |
373a8247 | 571 | } |
410a0ff2 SDJ |
572 | write_exp_elt_opcode (pstate, OP_LONG); |
573 | write_exp_elt_type (pstate, | |
574 | parse_type (pstate) | |
575 | ->builtin_char); | |
576 | write_exp_elt_longcst (pstate, (LONGEST)'\0'); | |
577 | write_exp_elt_opcode (pstate, OP_LONG); | |
578 | write_exp_elt_opcode (pstate, OP_ARRAY); | |
579 | write_exp_elt_longcst (pstate, (LONGEST) 0); | |
580 | write_exp_elt_longcst (pstate, | |
581 | (LONGEST) ($1.length)); | |
582 | write_exp_elt_opcode (pstate, OP_ARRAY); } | |
373a8247 PM |
583 | ; |
584 | ||
585 | /* Object pascal */ | |
586 | exp : THIS | |
6ced1581 | 587 | { |
fd0e9d45 PM |
588 | struct value * this_val; |
589 | struct type * this_type; | |
410a0ff2 SDJ |
590 | write_exp_elt_opcode (pstate, OP_THIS); |
591 | write_exp_elt_opcode (pstate, OP_THIS); | |
0df8b418 | 592 | /* We need type of this. */ |
410a0ff2 SDJ |
593 | this_val |
594 | = value_of_this_silent (parse_language (pstate)); | |
fd0e9d45 | 595 | if (this_val) |
04624583 | 596 | this_type = value_type (this_val); |
fd0e9d45 PM |
597 | else |
598 | this_type = NULL; | |
599 | if (this_type) | |
600 | { | |
601 | if (TYPE_CODE (this_type) == TYPE_CODE_PTR) | |
602 | { | |
603 | this_type = TYPE_TARGET_TYPE (this_type); | |
410a0ff2 | 604 | write_exp_elt_opcode (pstate, UNOP_IND); |
fd0e9d45 PM |
605 | } |
606 | } | |
6ced1581 | 607 | |
fd0e9d45 PM |
608 | current_type = this_type; |
609 | } | |
373a8247 PM |
610 | ; |
611 | ||
612 | /* end of object pascal. */ | |
613 | ||
614 | block : BLOCKNAME | |
615 | { | |
d12307c1 PMR |
616 | if ($1.sym.symbol != 0) |
617 | $$ = SYMBOL_BLOCK_VALUE ($1.sym.symbol); | |
373a8247 PM |
618 | else |
619 | { | |
620 | struct symtab *tem = | |
621 | lookup_symtab (copy_name ($1.stoken)); | |
622 | if (tem) | |
439247b6 | 623 | $$ = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (tem), |
0df8b418 | 624 | STATIC_BLOCK); |
373a8247 | 625 | else |
001083c6 | 626 | error (_("No file or function \"%s\"."), |
373a8247 PM |
627 | copy_name ($1.stoken)); |
628 | } | |
629 | } | |
630 | ; | |
631 | ||
632 | block : block COLONCOLON name | |
633 | { struct symbol *tem | |
634 | = lookup_symbol (copy_name ($3), $1, | |
d12307c1 PMR |
635 | VAR_DOMAIN, NULL).symbol; |
636 | ||
373a8247 | 637 | if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK) |
001083c6 | 638 | error (_("No function \"%s\" in specified context."), |
373a8247 PM |
639 | copy_name ($3)); |
640 | $$ = SYMBOL_BLOCK_VALUE (tem); } | |
641 | ; | |
642 | ||
643 | variable: block COLONCOLON name | |
d12307c1 PMR |
644 | { struct block_symbol sym; |
645 | ||
373a8247 | 646 | sym = lookup_symbol (copy_name ($3), $1, |
1993b719 | 647 | VAR_DOMAIN, NULL); |
d12307c1 | 648 | if (sym.symbol == 0) |
001083c6 | 649 | error (_("No symbol \"%s\" in specified context."), |
373a8247 PM |
650 | copy_name ($3)); |
651 | ||
410a0ff2 | 652 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
d12307c1 PMR |
653 | write_exp_elt_block (pstate, sym.block); |
654 | write_exp_elt_sym (pstate, sym.symbol); | |
410a0ff2 | 655 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); } |
373a8247 PM |
656 | ; |
657 | ||
658 | qualified_name: typebase COLONCOLON name | |
659 | { | |
660 | struct type *type = $1; | |
d12307c1 | 661 | |
373a8247 PM |
662 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
663 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
001083c6 | 664 | error (_("`%s' is not defined as an aggregate type."), |
373a8247 PM |
665 | TYPE_NAME (type)); |
666 | ||
410a0ff2 SDJ |
667 | write_exp_elt_opcode (pstate, OP_SCOPE); |
668 | write_exp_elt_type (pstate, type); | |
669 | write_exp_string (pstate, $3); | |
670 | write_exp_elt_opcode (pstate, OP_SCOPE); | |
373a8247 PM |
671 | } |
672 | ; | |
673 | ||
674 | variable: qualified_name | |
675 | | COLONCOLON name | |
676 | { | |
677 | char *name = copy_name ($2); | |
678 | struct symbol *sym; | |
7c7b6655 | 679 | struct bound_minimal_symbol msymbol; |
373a8247 PM |
680 | |
681 | sym = | |
682 | lookup_symbol (name, (const struct block *) NULL, | |
d12307c1 | 683 | VAR_DOMAIN, NULL).symbol; |
373a8247 PM |
684 | if (sym) |
685 | { | |
410a0ff2 SDJ |
686 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
687 | write_exp_elt_block (pstate, NULL); | |
688 | write_exp_elt_sym (pstate, sym); | |
689 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); | |
373a8247 PM |
690 | break; |
691 | } | |
692 | ||
7c7b6655 TT |
693 | msymbol = lookup_bound_minimal_symbol (name); |
694 | if (msymbol.minsym != NULL) | |
410a0ff2 | 695 | write_exp_msymbol (pstate, msymbol); |
0df8b418 MS |
696 | else if (!have_full_symbols () |
697 | && !have_partial_symbols ()) | |
001083c6 PM |
698 | error (_("No symbol table is loaded. " |
699 | "Use the \"file\" command.")); | |
373a8247 | 700 | else |
001083c6 | 701 | error (_("No symbol \"%s\" in current context."), |
0df8b418 | 702 | name); |
373a8247 PM |
703 | } |
704 | ; | |
705 | ||
706 | variable: name_not_typename | |
d12307c1 | 707 | { struct block_symbol sym = $1.sym; |
373a8247 | 708 | |
d12307c1 | 709 | if (sym.symbol) |
373a8247 | 710 | { |
d12307c1 | 711 | if (symbol_read_needs_frame (sym.symbol)) |
aee1fcdf | 712 | innermost_block.update (sym); |
373a8247 | 713 | |
410a0ff2 | 714 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
63e43d3a | 715 | write_exp_elt_block (pstate, sym.block); |
d12307c1 | 716 | write_exp_elt_sym (pstate, sym.symbol); |
410a0ff2 | 717 | write_exp_elt_opcode (pstate, OP_VAR_VALUE); |
d12307c1 | 718 | current_type = sym.symbol->type; } |
373a8247 PM |
719 | else if ($1.is_a_field_of_this) |
720 | { | |
9819c6c8 PM |
721 | struct value * this_val; |
722 | struct type * this_type; | |
373a8247 PM |
723 | /* Object pascal: it hangs off of `this'. Must |
724 | not inadvertently convert from a method call | |
725 | to data ref. */ | |
aee1fcdf | 726 | innermost_block.update (sym); |
410a0ff2 SDJ |
727 | write_exp_elt_opcode (pstate, OP_THIS); |
728 | write_exp_elt_opcode (pstate, OP_THIS); | |
729 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
730 | write_exp_string (pstate, $1.stoken); | |
731 | write_exp_elt_opcode (pstate, STRUCTOP_PTR); | |
0df8b418 | 732 | /* We need type of this. */ |
410a0ff2 SDJ |
733 | this_val |
734 | = value_of_this_silent (parse_language (pstate)); | |
9819c6c8 | 735 | if (this_val) |
04624583 | 736 | this_type = value_type (this_val); |
9819c6c8 PM |
737 | else |
738 | this_type = NULL; | |
739 | if (this_type) | |
740 | current_type = lookup_struct_elt_type ( | |
741 | this_type, | |
020cc13c | 742 | copy_name ($1.stoken), 0); |
9819c6c8 | 743 | else |
6ced1581 | 744 | current_type = NULL; |
373a8247 PM |
745 | } |
746 | else | |
747 | { | |
7c7b6655 | 748 | struct bound_minimal_symbol msymbol; |
710122da | 749 | char *arg = copy_name ($1.stoken); |
373a8247 PM |
750 | |
751 | msymbol = | |
7c7b6655 TT |
752 | lookup_bound_minimal_symbol (arg); |
753 | if (msymbol.minsym != NULL) | |
410a0ff2 | 754 | write_exp_msymbol (pstate, msymbol); |
0df8b418 MS |
755 | else if (!have_full_symbols () |
756 | && !have_partial_symbols ()) | |
001083c6 PM |
757 | error (_("No symbol table is loaded. " |
758 | "Use the \"file\" command.")); | |
373a8247 | 759 | else |
001083c6 | 760 | error (_("No symbol \"%s\" in current context."), |
373a8247 PM |
761 | copy_name ($1.stoken)); |
762 | } | |
763 | } | |
764 | ; | |
765 | ||
766 | ||
767 | ptype : typebase | |
768 | ; | |
769 | ||
770 | /* We used to try to recognize more pointer to member types here, but | |
771 | that didn't work (shift/reduce conflicts meant that these rules never | |
772 | got executed). The problem is that | |
773 | int (foo::bar::baz::bizzle) | |
774 | is a function type but | |
775 | int (foo::bar::baz::bizzle::*) | |
776 | is a pointer to member type. Stroustrup loses again! */ | |
777 | ||
778 | type : ptype | |
373a8247 PM |
779 | ; |
780 | ||
781 | typebase /* Implements (approximately): (type-qualifier)* type-specifier */ | |
fd0e9d45 PM |
782 | : '^' typebase |
783 | { $$ = lookup_pointer_type ($2); } | |
784 | | TYPENAME | |
373a8247 PM |
785 | { $$ = $1.type; } |
786 | | STRUCT name | |
787 | { $$ = lookup_struct (copy_name ($2), | |
788 | expression_context_block); } | |
789 | | CLASS name | |
790 | { $$ = lookup_struct (copy_name ($2), | |
791 | expression_context_block); } | |
792 | /* "const" and "volatile" are curently ignored. A type qualifier | |
793 | after the type is handled in the ptype rule. I think these could | |
794 | be too. */ | |
795 | ; | |
796 | ||
797 | name : NAME { $$ = $1.stoken; } | |
798 | | BLOCKNAME { $$ = $1.stoken; } | |
799 | | TYPENAME { $$ = $1.stoken; } | |
800 | | NAME_OR_INT { $$ = $1.stoken; } | |
801 | ; | |
802 | ||
803 | name_not_typename : NAME | |
804 | | BLOCKNAME | |
805 | /* These would be useful if name_not_typename was useful, but it is just | |
806 | a fake for "variable", so these cause reduce/reduce conflicts because | |
807 | the parser can't tell whether NAME_OR_INT is a name_not_typename (=variable, | |
808 | =exp) or just an exp. If name_not_typename was ever used in an lvalue | |
809 | context where only a name could occur, this might be useful. | |
810 | | NAME_OR_INT | |
811 | */ | |
812 | ; | |
813 | ||
814 | %% | |
815 | ||
816 | /* Take care of parsing a number (anything that starts with a digit). | |
817 | Set yylval and return the token type; update lexptr. | |
818 | LEN is the number of characters in it. */ | |
819 | ||
820 | /*** Needs some error checking for the float case ***/ | |
821 | ||
822 | static int | |
410a0ff2 SDJ |
823 | parse_number (struct parser_state *par_state, |
824 | const char *p, int len, int parsed_float, YYSTYPE *putithere) | |
373a8247 PM |
825 | { |
826 | /* FIXME: Shouldn't these be unsigned? We don't deal with negative values | |
827 | here, and we do kind of silly things like cast to unsigned. */ | |
710122da DC |
828 | LONGEST n = 0; |
829 | LONGEST prevn = 0; | |
373a8247 PM |
830 | ULONGEST un; |
831 | ||
710122da DC |
832 | int i = 0; |
833 | int c; | |
834 | int base = input_radix; | |
373a8247 PM |
835 | int unsigned_p = 0; |
836 | ||
837 | /* Number of "L" suffixes encountered. */ | |
838 | int long_p = 0; | |
839 | ||
840 | /* We have found a "L" or "U" suffix. */ | |
841 | int found_suffix = 0; | |
842 | ||
843 | ULONGEST high_bit; | |
844 | struct type *signed_type; | |
845 | struct type *unsigned_type; | |
846 | ||
847 | if (parsed_float) | |
848 | { | |
edd079d9 UW |
849 | /* Handle suffixes: 'f' for float, 'l' for long double. |
850 | FIXME: This appears to be an extension -- do we want this? */ | |
851 | if (len >= 1 && tolower (p[len - 1]) == 'f') | |
852 | { | |
853 | putithere->typed_val_float.type | |
854 | = parse_type (par_state)->builtin_float; | |
855 | len--; | |
856 | } | |
857 | else if (len >= 1 && tolower (p[len - 1]) == 'l') | |
858 | { | |
859 | putithere->typed_val_float.type | |
860 | = parse_type (par_state)->builtin_long_double; | |
861 | len--; | |
862 | } | |
863 | /* Default type for floating-point literals is double. */ | |
864 | else | |
865 | { | |
866 | putithere->typed_val_float.type | |
867 | = parse_type (par_state)->builtin_double; | |
868 | } | |
869 | ||
870 | if (!parse_float (p, len, | |
871 | putithere->typed_val_float.type, | |
872 | putithere->typed_val_float.val)) | |
373a8247 | 873 | return ERROR; |
373a8247 PM |
874 | return FLOAT; |
875 | } | |
876 | ||
0df8b418 | 877 | /* Handle base-switching prefixes 0x, 0t, 0d, 0. */ |
373a8247 PM |
878 | if (p[0] == '0') |
879 | switch (p[1]) | |
880 | { | |
881 | case 'x': | |
882 | case 'X': | |
883 | if (len >= 3) | |
884 | { | |
885 | p += 2; | |
886 | base = 16; | |
887 | len -= 2; | |
888 | } | |
889 | break; | |
890 | ||
891 | case 't': | |
892 | case 'T': | |
893 | case 'd': | |
894 | case 'D': | |
895 | if (len >= 3) | |
896 | { | |
897 | p += 2; | |
898 | base = 10; | |
899 | len -= 2; | |
900 | } | |
901 | break; | |
902 | ||
903 | default: | |
904 | base = 8; | |
905 | break; | |
906 | } | |
907 | ||
908 | while (len-- > 0) | |
909 | { | |
910 | c = *p++; | |
911 | if (c >= 'A' && c <= 'Z') | |
912 | c += 'a' - 'A'; | |
913 | if (c != 'l' && c != 'u') | |
914 | n *= base; | |
915 | if (c >= '0' && c <= '9') | |
916 | { | |
917 | if (found_suffix) | |
918 | return ERROR; | |
919 | n += i = c - '0'; | |
920 | } | |
921 | else | |
922 | { | |
923 | if (base > 10 && c >= 'a' && c <= 'f') | |
924 | { | |
925 | if (found_suffix) | |
926 | return ERROR; | |
927 | n += i = c - 'a' + 10; | |
928 | } | |
929 | else if (c == 'l') | |
930 | { | |
931 | ++long_p; | |
932 | found_suffix = 1; | |
933 | } | |
934 | else if (c == 'u') | |
935 | { | |
936 | unsigned_p = 1; | |
937 | found_suffix = 1; | |
938 | } | |
939 | else | |
940 | return ERROR; /* Char not a digit */ | |
941 | } | |
942 | if (i >= base) | |
0df8b418 | 943 | return ERROR; /* Invalid digit in this base. */ |
373a8247 PM |
944 | |
945 | /* Portably test for overflow (only works for nonzero values, so make | |
946 | a second check for zero). FIXME: Can't we just make n and prevn | |
947 | unsigned and avoid this? */ | |
948 | if (c != 'l' && c != 'u' && (prevn >= n) && n != 0) | |
0df8b418 | 949 | unsigned_p = 1; /* Try something unsigned. */ |
373a8247 PM |
950 | |
951 | /* Portably test for unsigned overflow. | |
952 | FIXME: This check is wrong; for example it doesn't find overflow | |
953 | on 0x123456789 when LONGEST is 32 bits. */ | |
954 | if (c != 'l' && c != 'u' && n != 0) | |
6ced1581 | 955 | { |
373a8247 | 956 | if ((unsigned_p && (ULONGEST) prevn >= (ULONGEST) n)) |
001083c6 | 957 | error (_("Numeric constant too large.")); |
373a8247 PM |
958 | } |
959 | prevn = n; | |
960 | } | |
961 | ||
962 | /* An integer constant is an int, a long, or a long long. An L | |
963 | suffix forces it to be long; an LL suffix forces it to be long | |
964 | long. If not forced to a larger size, it gets the first type of | |
965 | the above that it fits in. To figure out whether it fits, we | |
966 | shift it right and see whether anything remains. Note that we | |
967 | can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one | |
968 | operation, because many compilers will warn about such a shift | |
9a76efb6 UW |
969 | (which always produces a zero result). Sometimes gdbarch_int_bit |
970 | or gdbarch_long_bit will be that big, sometimes not. To deal with | |
373a8247 PM |
971 | the case where it is we just always shift the value more than |
972 | once, with fewer bits each time. */ | |
973 | ||
974 | un = (ULONGEST)n >> 2; | |
975 | if (long_p == 0 | |
410a0ff2 | 976 | && (un >> (gdbarch_int_bit (parse_gdbarch (par_state)) - 2)) == 0) |
373a8247 | 977 | { |
410a0ff2 SDJ |
978 | high_bit |
979 | = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch (par_state)) - 1); | |
373a8247 PM |
980 | |
981 | /* A large decimal (not hex or octal) constant (between INT_MAX | |
982 | and UINT_MAX) is a long or unsigned long, according to ANSI, | |
983 | never an unsigned int, but this code treats it as unsigned | |
984 | int. This probably should be fixed. GCC gives a warning on | |
985 | such constants. */ | |
986 | ||
410a0ff2 SDJ |
987 | unsigned_type = parse_type (par_state)->builtin_unsigned_int; |
988 | signed_type = parse_type (par_state)->builtin_int; | |
373a8247 PM |
989 | } |
990 | else if (long_p <= 1 | |
410a0ff2 | 991 | && (un >> (gdbarch_long_bit (parse_gdbarch (par_state)) - 2)) == 0) |
373a8247 | 992 | { |
410a0ff2 SDJ |
993 | high_bit |
994 | = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch (par_state)) - 1); | |
995 | unsigned_type = parse_type (par_state)->builtin_unsigned_long; | |
996 | signed_type = parse_type (par_state)->builtin_long; | |
373a8247 PM |
997 | } |
998 | else | |
999 | { | |
7451d027 | 1000 | int shift; |
9a76efb6 | 1001 | if (sizeof (ULONGEST) * HOST_CHAR_BIT |
410a0ff2 | 1002 | < gdbarch_long_long_bit (parse_gdbarch (par_state))) |
373a8247 | 1003 | /* A long long does not fit in a LONGEST. */ |
7451d027 AC |
1004 | shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1); |
1005 | else | |
410a0ff2 | 1006 | shift = (gdbarch_long_long_bit (parse_gdbarch (par_state)) - 1); |
7451d027 | 1007 | high_bit = (ULONGEST) 1 << shift; |
410a0ff2 SDJ |
1008 | unsigned_type = parse_type (par_state)->builtin_unsigned_long_long; |
1009 | signed_type = parse_type (par_state)->builtin_long_long; | |
373a8247 PM |
1010 | } |
1011 | ||
1012 | putithere->typed_val_int.val = n; | |
1013 | ||
1014 | /* If the high bit of the worked out type is set then this number | |
0df8b418 | 1015 | has to be unsigned. */ |
373a8247 PM |
1016 | |
1017 | if (unsigned_p || (n & high_bit)) | |
1018 | { | |
1019 | putithere->typed_val_int.type = unsigned_type; | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | putithere->typed_val_int.type = signed_type; | |
1024 | } | |
1025 | ||
1026 | return INT; | |
1027 | } | |
1028 | ||
9819c6c8 PM |
1029 | |
1030 | struct type_push | |
1031 | { | |
1032 | struct type *stored; | |
1033 | struct type_push *next; | |
1034 | }; | |
1035 | ||
1036 | static struct type_push *tp_top = NULL; | |
1037 | ||
b9362cc7 AC |
1038 | static void |
1039 | push_current_type (void) | |
9819c6c8 PM |
1040 | { |
1041 | struct type_push *tpnew; | |
1042 | tpnew = (struct type_push *) malloc (sizeof (struct type_push)); | |
1043 | tpnew->next = tp_top; | |
1044 | tpnew->stored = current_type; | |
1045 | current_type = NULL; | |
6ced1581 | 1046 | tp_top = tpnew; |
9819c6c8 PM |
1047 | } |
1048 | ||
b9362cc7 AC |
1049 | static void |
1050 | pop_current_type (void) | |
9819c6c8 PM |
1051 | { |
1052 | struct type_push *tp = tp_top; | |
1053 | if (tp) | |
1054 | { | |
1055 | current_type = tp->stored; | |
1056 | tp_top = tp->next; | |
bbe2ba60 | 1057 | free (tp); |
9819c6c8 PM |
1058 | } |
1059 | } | |
1060 | ||
373a8247 PM |
1061 | struct token |
1062 | { | |
a121b7c1 | 1063 | const char *oper; |
373a8247 PM |
1064 | int token; |
1065 | enum exp_opcode opcode; | |
1066 | }; | |
1067 | ||
1068 | static const struct token tokentab3[] = | |
1069 | { | |
1070 | {"shr", RSH, BINOP_END}, | |
1071 | {"shl", LSH, BINOP_END}, | |
1072 | {"and", ANDAND, BINOP_END}, | |
1073 | {"div", DIV, BINOP_END}, | |
1074 | {"not", NOT, BINOP_END}, | |
1075 | {"mod", MOD, BINOP_END}, | |
1076 | {"inc", INCREMENT, BINOP_END}, | |
1077 | {"dec", DECREMENT, BINOP_END}, | |
1078 | {"xor", XOR, BINOP_END} | |
1079 | }; | |
1080 | ||
1081 | static const struct token tokentab2[] = | |
1082 | { | |
1083 | {"or", OR, BINOP_END}, | |
1084 | {"<>", NOTEQUAL, BINOP_END}, | |
1085 | {"<=", LEQ, BINOP_END}, | |
1086 | {">=", GEQ, BINOP_END}, | |
9819c6c8 PM |
1087 | {":=", ASSIGN, BINOP_END}, |
1088 | {"::", COLONCOLON, BINOP_END} }; | |
373a8247 | 1089 | |
0df8b418 MS |
1090 | /* Allocate uppercased var: */ |
1091 | /* make an uppercased copy of tokstart. */ | |
d04550a6 | 1092 | static char * |
793156e6 | 1093 | uptok (const char *tokstart, int namelen) |
373a8247 PM |
1094 | { |
1095 | int i; | |
1096 | char *uptokstart = (char *)malloc(namelen+1); | |
1097 | for (i = 0;i <= namelen;i++) | |
1098 | { | |
1099 | if ((tokstart[i]>='a' && tokstart[i]<='z')) | |
1100 | uptokstart[i] = tokstart[i]-('a'-'A'); | |
1101 | else | |
1102 | uptokstart[i] = tokstart[i]; | |
1103 | } | |
1104 | uptokstart[namelen]='\0'; | |
1105 | return uptokstart; | |
1106 | } | |
373a8247 | 1107 | |
a5a44b53 | 1108 | /* Read one token, getting characters through lexptr. */ |
373a8247 PM |
1109 | |
1110 | static int | |
eeae04df | 1111 | yylex (void) |
373a8247 PM |
1112 | { |
1113 | int c; | |
1114 | int namelen; | |
1115 | unsigned int i; | |
793156e6 | 1116 | const char *tokstart; |
373a8247 | 1117 | char *uptokstart; |
793156e6 | 1118 | const char *tokptr; |
d3d6d173 | 1119 | int explen, tempbufindex; |
373a8247 PM |
1120 | static char *tempbuf; |
1121 | static int tempbufsize; | |
6ced1581 | 1122 | |
373a8247 PM |
1123 | retry: |
1124 | ||
24467a86 PM |
1125 | prev_lexptr = lexptr; |
1126 | ||
793156e6 | 1127 | tokstart = lexptr; |
d3d6d173 | 1128 | explen = strlen (lexptr); |
d7561cbb | 1129 | |
373a8247 | 1130 | /* See if it is a special token of length 3. */ |
d3d6d173 PM |
1131 | if (explen > 2) |
1132 | for (i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++) | |
fe978cb0 PA |
1133 | if (strncasecmp (tokstart, tokentab3[i].oper, 3) == 0 |
1134 | && (!isalpha (tokentab3[i].oper[0]) || explen == 3 | |
0df8b418 MS |
1135 | || (!isalpha (tokstart[3]) |
1136 | && !isdigit (tokstart[3]) && tokstart[3] != '_'))) | |
d3d6d173 PM |
1137 | { |
1138 | lexptr += 3; | |
1139 | yylval.opcode = tokentab3[i].opcode; | |
1140 | return tokentab3[i].token; | |
1141 | } | |
373a8247 PM |
1142 | |
1143 | /* See if it is a special token of length 2. */ | |
d3d6d173 PM |
1144 | if (explen > 1) |
1145 | for (i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++) | |
fe978cb0 PA |
1146 | if (strncasecmp (tokstart, tokentab2[i].oper, 2) == 0 |
1147 | && (!isalpha (tokentab2[i].oper[0]) || explen == 2 | |
0df8b418 MS |
1148 | || (!isalpha (tokstart[2]) |
1149 | && !isdigit (tokstart[2]) && tokstart[2] != '_'))) | |
d3d6d173 PM |
1150 | { |
1151 | lexptr += 2; | |
1152 | yylval.opcode = tokentab2[i].opcode; | |
1153 | return tokentab2[i].token; | |
1154 | } | |
373a8247 PM |
1155 | |
1156 | switch (c = *tokstart) | |
1157 | { | |
1158 | case 0: | |
8662d513 | 1159 | if (search_field && parse_completion) |
a5a44b53 PM |
1160 | return COMPLETE; |
1161 | else | |
1162 | return 0; | |
373a8247 PM |
1163 | |
1164 | case ' ': | |
1165 | case '\t': | |
1166 | case '\n': | |
1167 | lexptr++; | |
1168 | goto retry; | |
1169 | ||
1170 | case '\'': | |
1171 | /* We either have a character constant ('0' or '\177' for example) | |
1172 | or we have a quoted symbol reference ('foo(int,int)' in object pascal | |
0df8b418 | 1173 | for example). */ |
373a8247 PM |
1174 | lexptr++; |
1175 | c = *lexptr++; | |
1176 | if (c == '\\') | |
410a0ff2 | 1177 | c = parse_escape (parse_gdbarch (pstate), &lexptr); |
373a8247 | 1178 | else if (c == '\'') |
001083c6 | 1179 | error (_("Empty character constant.")); |
373a8247 PM |
1180 | |
1181 | yylval.typed_val_int.val = c; | |
410a0ff2 | 1182 | yylval.typed_val_int.type = parse_type (pstate)->builtin_char; |
373a8247 PM |
1183 | |
1184 | c = *lexptr++; | |
1185 | if (c != '\'') | |
1186 | { | |
1187 | namelen = skip_quoted (tokstart) - tokstart; | |
1188 | if (namelen > 2) | |
1189 | { | |
1190 | lexptr = tokstart + namelen; | |
1191 | if (lexptr[-1] != '\'') | |
001083c6 | 1192 | error (_("Unmatched single quote.")); |
373a8247 PM |
1193 | namelen -= 2; |
1194 | tokstart++; | |
1195 | uptokstart = uptok(tokstart,namelen); | |
1196 | goto tryname; | |
1197 | } | |
001083c6 | 1198 | error (_("Invalid character constant.")); |
373a8247 PM |
1199 | } |
1200 | return INT; | |
1201 | ||
1202 | case '(': | |
1203 | paren_depth++; | |
1204 | lexptr++; | |
1205 | return c; | |
1206 | ||
1207 | case ')': | |
1208 | if (paren_depth == 0) | |
1209 | return 0; | |
1210 | paren_depth--; | |
1211 | lexptr++; | |
1212 | return c; | |
1213 | ||
1214 | case ',': | |
1215 | if (comma_terminates && paren_depth == 0) | |
1216 | return 0; | |
1217 | lexptr++; | |
1218 | return c; | |
1219 | ||
1220 | case '.': | |
1221 | /* Might be a floating point number. */ | |
1222 | if (lexptr[1] < '0' || lexptr[1] > '9') | |
a5a44b53 | 1223 | { |
a5a44b53 PM |
1224 | goto symbol; /* Nope, must be a symbol. */ |
1225 | } | |
1226 | ||
373a8247 PM |
1227 | /* FALL THRU into number case. */ |
1228 | ||
1229 | case '0': | |
1230 | case '1': | |
1231 | case '2': | |
1232 | case '3': | |
1233 | case '4': | |
1234 | case '5': | |
1235 | case '6': | |
1236 | case '7': | |
1237 | case '8': | |
1238 | case '9': | |
1239 | { | |
1240 | /* It's a number. */ | |
1241 | int got_dot = 0, got_e = 0, toktype; | |
793156e6 | 1242 | const char *p = tokstart; |
373a8247 PM |
1243 | int hex = input_radix > 10; |
1244 | ||
1245 | if (c == '0' && (p[1] == 'x' || p[1] == 'X')) | |
1246 | { | |
1247 | p += 2; | |
1248 | hex = 1; | |
1249 | } | |
0df8b418 MS |
1250 | else if (c == '0' && (p[1]=='t' || p[1]=='T' |
1251 | || p[1]=='d' || p[1]=='D')) | |
373a8247 PM |
1252 | { |
1253 | p += 2; | |
1254 | hex = 0; | |
1255 | } | |
1256 | ||
1257 | for (;; ++p) | |
1258 | { | |
1259 | /* This test includes !hex because 'e' is a valid hex digit | |
1260 | and thus does not indicate a floating point number when | |
1261 | the radix is hex. */ | |
1262 | if (!hex && !got_e && (*p == 'e' || *p == 'E')) | |
1263 | got_dot = got_e = 1; | |
1264 | /* This test does not include !hex, because a '.' always indicates | |
1265 | a decimal floating point number regardless of the radix. */ | |
1266 | else if (!got_dot && *p == '.') | |
1267 | got_dot = 1; | |
1268 | else if (got_e && (p[-1] == 'e' || p[-1] == 'E') | |
1269 | && (*p == '-' || *p == '+')) | |
1270 | /* This is the sign of the exponent, not the end of the | |
1271 | number. */ | |
1272 | continue; | |
1273 | /* We will take any letters or digits. parse_number will | |
1274 | complain if past the radix, or if L or U are not final. */ | |
1275 | else if ((*p < '0' || *p > '9') | |
1276 | && ((*p < 'a' || *p > 'z') | |
1277 | && (*p < 'A' || *p > 'Z'))) | |
1278 | break; | |
1279 | } | |
410a0ff2 | 1280 | toktype = parse_number (pstate, tokstart, |
0df8b418 | 1281 | p - tokstart, got_dot | got_e, &yylval); |
373a8247 PM |
1282 | if (toktype == ERROR) |
1283 | { | |
1284 | char *err_copy = (char *) alloca (p - tokstart + 1); | |
1285 | ||
1286 | memcpy (err_copy, tokstart, p - tokstart); | |
1287 | err_copy[p - tokstart] = 0; | |
001083c6 | 1288 | error (_("Invalid number \"%s\"."), err_copy); |
373a8247 PM |
1289 | } |
1290 | lexptr = p; | |
1291 | return toktype; | |
1292 | } | |
1293 | ||
1294 | case '+': | |
1295 | case '-': | |
1296 | case '*': | |
1297 | case '/': | |
1298 | case '|': | |
1299 | case '&': | |
1300 | case '^': | |
1301 | case '~': | |
1302 | case '!': | |
1303 | case '@': | |
1304 | case '<': | |
1305 | case '>': | |
1306 | case '[': | |
1307 | case ']': | |
1308 | case '?': | |
1309 | case ':': | |
1310 | case '=': | |
1311 | case '{': | |
1312 | case '}': | |
1313 | symbol: | |
1314 | lexptr++; | |
1315 | return c; | |
1316 | ||
1317 | case '"': | |
1318 | ||
1319 | /* Build the gdb internal form of the input string in tempbuf, | |
1320 | translating any standard C escape forms seen. Note that the | |
1321 | buffer is null byte terminated *only* for the convenience of | |
1322 | debugging gdb itself and printing the buffer contents when | |
1323 | the buffer contains no embedded nulls. Gdb does not depend | |
1324 | upon the buffer being null byte terminated, it uses the length | |
1325 | string instead. This allows gdb to handle C strings (as well | |
0df8b418 | 1326 | as strings in other languages) with embedded null bytes. */ |
373a8247 PM |
1327 | |
1328 | tokptr = ++tokstart; | |
1329 | tempbufindex = 0; | |
1330 | ||
1331 | do { | |
1332 | /* Grow the static temp buffer if necessary, including allocating | |
0df8b418 | 1333 | the first one on demand. */ |
373a8247 PM |
1334 | if (tempbufindex + 1 >= tempbufsize) |
1335 | { | |
1336 | tempbuf = (char *) realloc (tempbuf, tempbufsize += 64); | |
1337 | } | |
9819c6c8 | 1338 | |
373a8247 PM |
1339 | switch (*tokptr) |
1340 | { | |
1341 | case '\0': | |
1342 | case '"': | |
0df8b418 | 1343 | /* Do nothing, loop will terminate. */ |
373a8247 PM |
1344 | break; |
1345 | case '\\': | |
793156e6 | 1346 | ++tokptr; |
410a0ff2 | 1347 | c = parse_escape (parse_gdbarch (pstate), &tokptr); |
793156e6 KS |
1348 | if (c == -1) |
1349 | { | |
1350 | continue; | |
1351 | } | |
1352 | tempbuf[tempbufindex++] = c; | |
373a8247 PM |
1353 | break; |
1354 | default: | |
1355 | tempbuf[tempbufindex++] = *tokptr++; | |
1356 | break; | |
1357 | } | |
1358 | } while ((*tokptr != '"') && (*tokptr != '\0')); | |
1359 | if (*tokptr++ != '"') | |
1360 | { | |
001083c6 | 1361 | error (_("Unterminated string in expression.")); |
373a8247 | 1362 | } |
0df8b418 | 1363 | tempbuf[tempbufindex] = '\0'; /* See note above. */ |
373a8247 PM |
1364 | yylval.sval.ptr = tempbuf; |
1365 | yylval.sval.length = tempbufindex; | |
1366 | lexptr = tokptr; | |
1367 | return (STRING); | |
1368 | } | |
1369 | ||
1370 | if (!(c == '_' || c == '$' | |
1371 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) | |
1372 | /* We must have come across a bad character (e.g. ';'). */ | |
001083c6 | 1373 | error (_("Invalid character '%c' in expression."), c); |
373a8247 PM |
1374 | |
1375 | /* It's a name. See how long it is. */ | |
1376 | namelen = 0; | |
1377 | for (c = tokstart[namelen]; | |
1378 | (c == '_' || c == '$' || (c >= '0' && c <= '9') | |
1379 | || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');) | |
1380 | { | |
1381 | /* Template parameter lists are part of the name. | |
1382 | FIXME: This mishandles `print $a<4&&$a>3'. */ | |
1383 | if (c == '<') | |
1384 | { | |
1385 | int i = namelen; | |
1386 | int nesting_level = 1; | |
1387 | while (tokstart[++i]) | |
1388 | { | |
1389 | if (tokstart[i] == '<') | |
1390 | nesting_level++; | |
1391 | else if (tokstart[i] == '>') | |
1392 | { | |
1393 | if (--nesting_level == 0) | |
1394 | break; | |
1395 | } | |
1396 | } | |
1397 | if (tokstart[i] == '>') | |
1398 | namelen = i; | |
1399 | else | |
1400 | break; | |
1401 | } | |
1402 | ||
0df8b418 | 1403 | /* do NOT uppercase internals because of registers !!! */ |
373a8247 PM |
1404 | c = tokstart[++namelen]; |
1405 | } | |
1406 | ||
1407 | uptokstart = uptok(tokstart,namelen); | |
1408 | ||
1409 | /* The token "if" terminates the expression and is NOT | |
1410 | removed from the input stream. */ | |
1411 | if (namelen == 2 && uptokstart[0] == 'I' && uptokstart[1] == 'F') | |
1412 | { | |
7877e977 | 1413 | free (uptokstart); |
373a8247 PM |
1414 | return 0; |
1415 | } | |
1416 | ||
1417 | lexptr += namelen; | |
1418 | ||
1419 | tryname: | |
1420 | ||
1421 | /* Catch specific keywords. Should be done with a data structure. */ | |
1422 | switch (namelen) | |
1423 | { | |
1424 | case 6: | |
0b058123 | 1425 | if (strcmp (uptokstart, "OBJECT") == 0) |
7877e977 MS |
1426 | { |
1427 | free (uptokstart); | |
1428 | return CLASS; | |
1429 | } | |
0b058123 | 1430 | if (strcmp (uptokstart, "RECORD") == 0) |
7877e977 MS |
1431 | { |
1432 | free (uptokstart); | |
1433 | return STRUCT; | |
1434 | } | |
0b058123 | 1435 | if (strcmp (uptokstart, "SIZEOF") == 0) |
7877e977 MS |
1436 | { |
1437 | free (uptokstart); | |
1438 | return SIZEOF; | |
1439 | } | |
373a8247 PM |
1440 | break; |
1441 | case 5: | |
0b058123 | 1442 | if (strcmp (uptokstart, "CLASS") == 0) |
7877e977 MS |
1443 | { |
1444 | free (uptokstart); | |
1445 | return CLASS; | |
1446 | } | |
0b058123 | 1447 | if (strcmp (uptokstart, "FALSE") == 0) |
373a8247 PM |
1448 | { |
1449 | yylval.lval = 0; | |
7877e977 | 1450 | free (uptokstart); |
2692ddb3 | 1451 | return FALSEKEYWORD; |
373a8247 PM |
1452 | } |
1453 | break; | |
1454 | case 4: | |
0b058123 | 1455 | if (strcmp (uptokstart, "TRUE") == 0) |
373a8247 PM |
1456 | { |
1457 | yylval.lval = 1; | |
7877e977 | 1458 | free (uptokstart); |
2692ddb3 | 1459 | return TRUEKEYWORD; |
373a8247 | 1460 | } |
0b058123 | 1461 | if (strcmp (uptokstart, "SELF") == 0) |
373a8247 | 1462 | { |
0df8b418 MS |
1463 | /* Here we search for 'this' like |
1464 | inserted in FPC stabs debug info. */ | |
8343f86c | 1465 | static const char this_name[] = "this"; |
373a8247 PM |
1466 | |
1467 | if (lookup_symbol (this_name, expression_context_block, | |
d12307c1 | 1468 | VAR_DOMAIN, NULL).symbol) |
7877e977 MS |
1469 | { |
1470 | free (uptokstart); | |
1471 | return THIS; | |
1472 | } | |
373a8247 PM |
1473 | } |
1474 | break; | |
1475 | default: | |
1476 | break; | |
1477 | } | |
1478 | ||
1479 | yylval.sval.ptr = tokstart; | |
1480 | yylval.sval.length = namelen; | |
1481 | ||
1482 | if (*tokstart == '$') | |
1483 | { | |
793156e6 KS |
1484 | char *tmp; |
1485 | ||
373a8247 PM |
1486 | /* $ is the normal prefix for pascal hexadecimal values |
1487 | but this conflicts with the GDB use for debugger variables | |
1488 | so in expression to enter hexadecimal values | |
1489 | we still need to use C syntax with 0xff */ | |
410a0ff2 | 1490 | write_dollar_variable (pstate, yylval.sval); |
224c3ddb | 1491 | tmp = (char *) alloca (namelen + 1); |
793156e6 KS |
1492 | memcpy (tmp, tokstart, namelen); |
1493 | tmp[namelen] = '\0'; | |
1494 | intvar = lookup_only_internalvar (tmp + 1); | |
7877e977 | 1495 | free (uptokstart); |
373a8247 PM |
1496 | return VARIABLE; |
1497 | } | |
1498 | ||
1499 | /* Use token-type BLOCKNAME for symbols that happen to be defined as | |
1500 | functions or symtabs. If this is not so, then ... | |
1501 | Use token-type TYPENAME for symbols that happen to be defined | |
1502 | currently as names of types; NAME for other symbols. | |
1503 | The caller is not constrained to care about the distinction. */ | |
1504 | { | |
1505 | char *tmp = copy_name (yylval.sval); | |
1506 | struct symbol *sym; | |
1993b719 | 1507 | struct field_of_this_result is_a_field_of_this; |
9819c6c8 | 1508 | int is_a_field = 0; |
373a8247 PM |
1509 | int hextype; |
1510 | ||
8aae4344 | 1511 | is_a_field_of_this.type = NULL; |
9819c6c8 | 1512 | if (search_field && current_type) |
0df8b418 | 1513 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1514 | if (is_a_field) |
9819c6c8 PM |
1515 | sym = NULL; |
1516 | else | |
1517 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1518 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
94a716bf | 1519 | /* second chance uppercased (as Free Pascal does). */ |
1993b719 | 1520 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
373a8247 | 1521 | { |
94a716bf | 1522 | for (i = 0; i <= namelen; i++) |
373a8247 | 1523 | { |
94a716bf | 1524 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) |
373a8247 | 1525 | tmp[i] -= ('a'-'A'); |
373a8247 | 1526 | } |
9819c6c8 | 1527 | if (search_field && current_type) |
0df8b418 | 1528 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1529 | if (is_a_field) |
9819c6c8 PM |
1530 | sym = NULL; |
1531 | else | |
1532 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1533 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
94a716bf PM |
1534 | } |
1535 | /* Third chance Capitalized (as GPC does). */ | |
1993b719 | 1536 | if (!sym && is_a_field_of_this.type == NULL && !is_a_field) |
94a716bf PM |
1537 | { |
1538 | for (i = 0; i <= namelen; i++) | |
1539 | { | |
1540 | if (i == 0) | |
1541 | { | |
1542 | if ((tmp[i] >= 'a' && tmp[i] <= 'z')) | |
1543 | tmp[i] -= ('a'-'A'); | |
1544 | } | |
1545 | else | |
1546 | if ((tmp[i] >= 'A' && tmp[i] <= 'Z')) | |
1547 | tmp[i] -= ('A'-'a'); | |
1548 | } | |
9819c6c8 | 1549 | if (search_field && current_type) |
0df8b418 | 1550 | is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL); |
8662d513 | 1551 | if (is_a_field) |
9819c6c8 PM |
1552 | sym = NULL; |
1553 | else | |
1554 | sym = lookup_symbol (tmp, expression_context_block, | |
d12307c1 | 1555 | VAR_DOMAIN, &is_a_field_of_this).symbol; |
373a8247 | 1556 | } |
9819c6c8 | 1557 | |
8aae4344 | 1558 | if (is_a_field || (is_a_field_of_this.type != NULL)) |
9819c6c8 PM |
1559 | { |
1560 | tempbuf = (char *) realloc (tempbuf, namelen + 1); | |
793156e6 KS |
1561 | strncpy (tempbuf, tmp, namelen); |
1562 | tempbuf [namelen] = 0; | |
9819c6c8 | 1563 | yylval.sval.ptr = tempbuf; |
6ced1581 | 1564 | yylval.sval.length = namelen; |
d12307c1 PMR |
1565 | yylval.ssym.sym.symbol = NULL; |
1566 | yylval.ssym.sym.block = NULL; | |
7877e977 | 1567 | free (uptokstart); |
8aae4344 PM |
1568 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
1569 | if (is_a_field) | |
1570 | return FIELDNAME; | |
1571 | else | |
1572 | return NAME; | |
6ced1581 | 1573 | } |
373a8247 PM |
1574 | /* Call lookup_symtab, not lookup_partial_symtab, in case there are |
1575 | no psymtabs (coff, xcoff, or some future change to blow away the | |
1576 | psymtabs once once symbols are read). */ | |
0b058123 PM |
1577 | if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK) |
1578 | || lookup_symtab (tmp)) | |
373a8247 | 1579 | { |
d12307c1 PMR |
1580 | yylval.ssym.sym.symbol = sym; |
1581 | yylval.ssym.sym.block = NULL; | |
1993b719 | 1582 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
7877e977 | 1583 | free (uptokstart); |
373a8247 PM |
1584 | return BLOCKNAME; |
1585 | } | |
1586 | if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
1587 | { | |
1588 | #if 1 | |
1589 | /* Despite the following flaw, we need to keep this code enabled. | |
1590 | Because we can get called from check_stub_method, if we don't | |
1591 | handle nested types then it screws many operations in any | |
1592 | program which uses nested types. */ | |
1593 | /* In "A::x", if x is a member function of A and there happens | |
1594 | to be a type (nested or not, since the stabs don't make that | |
1595 | distinction) named x, then this code incorrectly thinks we | |
1596 | are dealing with nested types rather than a member function. */ | |
1597 | ||
d7561cbb KS |
1598 | const char *p; |
1599 | const char *namestart; | |
373a8247 PM |
1600 | struct symbol *best_sym; |
1601 | ||
1602 | /* Look ahead to detect nested types. This probably should be | |
1603 | done in the grammar, but trying seemed to introduce a lot | |
1604 | of shift/reduce and reduce/reduce conflicts. It's possible | |
1605 | that it could be done, though. Or perhaps a non-grammar, but | |
1606 | less ad hoc, approach would work well. */ | |
1607 | ||
1608 | /* Since we do not currently have any way of distinguishing | |
1609 | a nested type from a non-nested one (the stabs don't tell | |
1610 | us whether a type is nested), we just ignore the | |
1611 | containing type. */ | |
1612 | ||
1613 | p = lexptr; | |
1614 | best_sym = sym; | |
1615 | while (1) | |
1616 | { | |
1617 | /* Skip whitespace. */ | |
1618 | while (*p == ' ' || *p == '\t' || *p == '\n') | |
1619 | ++p; | |
1620 | if (*p == ':' && p[1] == ':') | |
1621 | { | |
1622 | /* Skip the `::'. */ | |
1623 | p += 2; | |
1624 | /* Skip whitespace. */ | |
1625 | while (*p == ' ' || *p == '\t' || *p == '\n') | |
1626 | ++p; | |
1627 | namestart = p; | |
1628 | while (*p == '_' || *p == '$' || (*p >= '0' && *p <= '9') | |
1629 | || (*p >= 'a' && *p <= 'z') | |
1630 | || (*p >= 'A' && *p <= 'Z')) | |
1631 | ++p; | |
1632 | if (p != namestart) | |
1633 | { | |
1634 | struct symbol *cur_sym; | |
1635 | /* As big as the whole rest of the expression, which is | |
1636 | at least big enough. */ | |
224c3ddb SM |
1637 | char *ncopy |
1638 | = (char *) alloca (strlen (tmp) + strlen (namestart) | |
1639 | + 3); | |
373a8247 PM |
1640 | char *tmp1; |
1641 | ||
1642 | tmp1 = ncopy; | |
1643 | memcpy (tmp1, tmp, strlen (tmp)); | |
1644 | tmp1 += strlen (tmp); | |
1645 | memcpy (tmp1, "::", 2); | |
1646 | tmp1 += 2; | |
1647 | memcpy (tmp1, namestart, p - namestart); | |
1648 | tmp1[p - namestart] = '\0'; | |
1649 | cur_sym = lookup_symbol (ncopy, expression_context_block, | |
d12307c1 | 1650 | VAR_DOMAIN, NULL).symbol; |
373a8247 PM |
1651 | if (cur_sym) |
1652 | { | |
1653 | if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF) | |
1654 | { | |
1655 | best_sym = cur_sym; | |
1656 | lexptr = p; | |
1657 | } | |
1658 | else | |
1659 | break; | |
1660 | } | |
1661 | else | |
1662 | break; | |
1663 | } | |
1664 | else | |
1665 | break; | |
1666 | } | |
1667 | else | |
1668 | break; | |
1669 | } | |
1670 | ||
1671 | yylval.tsym.type = SYMBOL_TYPE (best_sym); | |
1672 | #else /* not 0 */ | |
1673 | yylval.tsym.type = SYMBOL_TYPE (sym); | |
1674 | #endif /* not 0 */ | |
7877e977 | 1675 | free (uptokstart); |
373a8247 PM |
1676 | return TYPENAME; |
1677 | } | |
54a5b07d | 1678 | yylval.tsym.type |
46b0da17 DE |
1679 | = language_lookup_primitive_type (parse_language (pstate), |
1680 | parse_gdbarch (pstate), tmp); | |
54a5b07d | 1681 | if (yylval.tsym.type != NULL) |
7877e977 MS |
1682 | { |
1683 | free (uptokstart); | |
1684 | return TYPENAME; | |
1685 | } | |
373a8247 PM |
1686 | |
1687 | /* Input names that aren't symbols but ARE valid hex numbers, | |
1688 | when the input radix permits them, can be names or numbers | |
1689 | depending on the parse. Note we support radixes > 16 here. */ | |
0b058123 PM |
1690 | if (!sym |
1691 | && ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) | |
1692 | || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10))) | |
373a8247 PM |
1693 | { |
1694 | YYSTYPE newlval; /* Its value is ignored. */ | |
410a0ff2 | 1695 | hextype = parse_number (pstate, tokstart, namelen, 0, &newlval); |
373a8247 PM |
1696 | if (hextype == INT) |
1697 | { | |
d12307c1 PMR |
1698 | yylval.ssym.sym.symbol = sym; |
1699 | yylval.ssym.sym.block = NULL; | |
1993b719 | 1700 | yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL; |
7877e977 | 1701 | free (uptokstart); |
373a8247 PM |
1702 | return NAME_OR_INT; |
1703 | } | |
1704 | } | |
1705 | ||
1706 | free(uptokstart); | |
0df8b418 | 1707 | /* Any other kind of symbol. */ |
d12307c1 PMR |
1708 | yylval.ssym.sym.symbol = sym; |
1709 | yylval.ssym.sym.block = NULL; | |
373a8247 PM |
1710 | return NAME; |
1711 | } | |
1712 | } | |
1713 | ||
410a0ff2 SDJ |
1714 | int |
1715 | pascal_parse (struct parser_state *par_state) | |
1716 | { | |
410a0ff2 | 1717 | /* Setting up the parser state. */ |
eae49211 | 1718 | scoped_restore pstate_restore = make_scoped_restore (&pstate); |
410a0ff2 SDJ |
1719 | gdb_assert (par_state != NULL); |
1720 | pstate = par_state; | |
1721 | ||
eae49211 | 1722 | return yyparse (); |
410a0ff2 SDJ |
1723 | } |
1724 | ||
373a8247 | 1725 | void |
a121b7c1 | 1726 | yyerror (const char *msg) |
373a8247 | 1727 | { |
24467a86 PM |
1728 | if (prev_lexptr) |
1729 | lexptr = prev_lexptr; | |
1730 | ||
001083c6 | 1731 | error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr); |
373a8247 | 1732 | } |