Commit | Line | Data |
---|---|---|
50641945 | 1 | /* Parser for linespec for the GNU debugger, GDB. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
2b0ee454 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
50641945 FN |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
c5f0f3d0 FN |
25 | #include "frame.h" |
26 | #include "command.h" | |
50641945 FN |
27 | #include "symfile.h" |
28 | #include "objfiles.h" | |
0378c332 | 29 | #include "source.h" |
50641945 | 30 | #include "demangle.h" |
c5f0f3d0 FN |
31 | #include "value.h" |
32 | #include "completer.h" | |
015a42b4 | 33 | #include "cp-abi.h" |
c38da1af | 34 | #include "parser-defs.h" |
fe898f56 | 35 | #include "block.h" |
50641945 FN |
36 | |
37 | /* We share this one with symtab.c, but it is not exported widely. */ | |
38 | ||
39 | extern char *operator_chars (char *, char **); | |
40 | ||
50641945 FN |
41 | /* Prototypes for local functions */ |
42 | ||
44fe14ab DC |
43 | static void initialize_defaults (struct symtab **default_symtab, |
44 | int *default_line); | |
45 | ||
636b1a6d DC |
46 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
47 | ||
44fe14ab DC |
48 | static struct symtabs_and_lines decode_indirect (char **argptr); |
49 | ||
0960f083 DC |
50 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
51 | ||
614b3b14 DC |
52 | static struct symtabs_and_lines decode_compound (char **argptr, |
53 | int funfirstline, | |
54 | char ***canonical, | |
55 | char *saved_arg, | |
56 | char *p); | |
57 | ||
93d91629 DC |
58 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
59 | ||
614b3b14 DC |
60 | static NORETURN void cplusplus_error (const char *name, |
61 | const char *fmt, ...) | |
62 | ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); | |
50641945 FN |
63 | |
64 | static int total_number_of_methods (struct type *type); | |
65 | ||
66 | static int find_methods (struct type *, char *, struct symbol **); | |
67 | ||
68 | static void build_canonical_line_spec (struct symtab_and_line *, | |
69 | char *, char ***); | |
70 | ||
71 | static char *find_toplevel_char (char *s, char c); | |
72 | ||
73 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
74 | int, int, char ***); | |
75 | ||
f3c39e76 DC |
76 | static struct symtab *symtab_from_filename (char **argptr, |
77 | char *p, int is_quote_enclosed); | |
78 | ||
84fba31b DC |
79 | static struct |
80 | symtabs_and_lines decode_all_digits (char **argptr, | |
81 | struct symtab *default_symtab, | |
82 | int default_line, | |
83 | char ***canonical, | |
88d262ca | 84 | struct symtab *file_symtab, |
84fba31b DC |
85 | char *q); |
86 | ||
14e91ac5 DC |
87 | static struct symtabs_and_lines decode_dollar (char *copy, |
88 | int funfirstline, | |
89 | struct symtab *default_symtab, | |
90 | char ***canonical, | |
88d262ca | 91 | struct symtab *file_symtab); |
14e91ac5 | 92 | |
bca02a8a DC |
93 | static struct symtabs_and_lines decode_variable (char *copy, |
94 | int funfirstline, | |
95 | char ***canonical, | |
88d262ca | 96 | struct symtab *file_symtab); |
bca02a8a | 97 | |
413dad4d DC |
98 | static struct |
99 | symtabs_and_lines symbol_found (int funfirstline, | |
100 | char ***canonical, | |
101 | char *copy, | |
102 | struct symbol *sym, | |
88d262ca | 103 | struct symtab *file_symtab, |
413dad4d DC |
104 | struct symtab *sym_symtab); |
105 | ||
106 | static struct | |
107 | symtabs_and_lines minsym_found (int funfirstline, | |
108 | struct minimal_symbol *msymbol); | |
109 | ||
50641945 FN |
110 | /* Helper functions. */ |
111 | ||
255e7dbf AC |
112 | /* Issue a helpful hint on using the command completion feature on |
113 | single quoted demangled C++ symbols as part of the completion | |
114 | error. */ | |
50641945 | 115 | |
614b3b14 | 116 | static NORETURN void |
255e7dbf | 117 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 118 | { |
255e7dbf AC |
119 | struct ui_file *tmp_stream; |
120 | tmp_stream = mem_fileopen (); | |
121 | make_cleanup_ui_file_delete (tmp_stream); | |
122 | ||
123 | { | |
124 | va_list args; | |
125 | va_start (args, fmt); | |
126 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
127 | va_end (args); | |
128 | } | |
129 | ||
50641945 FN |
130 | while (*name == '\'') |
131 | name++; | |
255e7dbf AC |
132 | fprintf_unfiltered (tmp_stream, |
133 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
134 | "(Note leading single quote.)"), | |
135 | name, name); | |
136 | error_stream (tmp_stream); | |
50641945 FN |
137 | } |
138 | ||
139 | /* Return the number of methods described for TYPE, including the | |
140 | methods from types it derives from. This can't be done in the symbol | |
141 | reader because the type of the baseclass might still be stubbed | |
142 | when the definition of the derived class is parsed. */ | |
143 | ||
144 | static int | |
145 | total_number_of_methods (struct type *type) | |
146 | { | |
147 | int n; | |
148 | int count; | |
149 | ||
150 | CHECK_TYPEDEF (type); | |
151 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
152 | return 0; | |
153 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
154 | ||
155 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
156 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
157 | ||
158 | return count; | |
159 | } | |
160 | ||
161 | /* Recursive helper function for decode_line_1. | |
162 | Look for methods named NAME in type T. | |
163 | Return number of matches. | |
164 | Put matches in SYM_ARR, which should have been allocated with | |
165 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
166 | Note that this function is g++ specific. */ | |
167 | ||
168 | static int | |
169 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
170 | { | |
171 | int i1 = 0; | |
172 | int ibase; | |
50641945 FN |
173 | char *class_name = type_name_no_tag (t); |
174 | ||
175 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
176 | unless we figure out how to get the physname without the name of | |
177 | the class, then the loop can't do any good. */ | |
178 | if (class_name | |
8bd1f2c6 JB |
179 | && (lookup_symbol (class_name, (struct block *) NULL, |
180 | STRUCT_NAMESPACE, (int *) NULL, | |
181 | (struct symtab **) NULL))) | |
50641945 FN |
182 | { |
183 | int method_counter; | |
5c717440 | 184 | int name_len = strlen (name); |
50641945 | 185 | |
8bd1f2c6 | 186 | CHECK_TYPEDEF (t); |
50641945 FN |
187 | |
188 | /* Loop over each method name. At this level, all overloads of a name | |
189 | are counted as a single name. There is an inner loop which loops over | |
190 | each overload. */ | |
191 | ||
192 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
193 | method_counter >= 0; | |
194 | --method_counter) | |
195 | { | |
196 | int field_counter; | |
197 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
198 | char dem_opname[64]; | |
199 | ||
200 | if (strncmp (method_name, "__", 2) == 0 || | |
201 | strncmp (method_name, "op", 2) == 0 || | |
202 | strncmp (method_name, "type", 4) == 0) | |
203 | { | |
204 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
205 | method_name = dem_opname; | |
206 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
207 | method_name = dem_opname; | |
208 | } | |
209 | ||
13b57657 | 210 | if (strcmp_iw (name, method_name) == 0) |
50641945 FN |
211 | /* Find all the overloaded methods with that name. */ |
212 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
213 | field_counter >= 0; | |
214 | --field_counter) | |
215 | { | |
216 | struct fn_field *f; | |
217 | char *phys_name; | |
218 | ||
219 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
220 | ||
221 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
222 | { | |
223 | char *tmp_name; | |
224 | ||
225 | tmp_name = gdb_mangle_name (t, | |
226 | method_counter, | |
227 | field_counter); | |
228 | phys_name = alloca (strlen (tmp_name) + 1); | |
229 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 230 | xfree (tmp_name); |
50641945 FN |
231 | } |
232 | else | |
233 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
8bd1f2c6 | 234 | |
a04257e6 DC |
235 | /* Destructor is handled by caller, don't add it to |
236 | the list. */ | |
015a42b4 | 237 | if (is_destructor_name (phys_name) != 0) |
50641945 FN |
238 | continue; |
239 | ||
240 | sym_arr[i1] = lookup_symbol (phys_name, | |
241 | NULL, VAR_NAMESPACE, | |
242 | (int *) NULL, | |
243 | (struct symtab **) NULL); | |
244 | if (sym_arr[i1]) | |
245 | i1++; | |
246 | else | |
247 | { | |
248 | /* This error message gets printed, but the method | |
249 | still seems to be found | |
250 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
251 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
252 | language_cplus, | |
253 | DMGL_PARAMS | DMGL_ANSI); | |
254 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
255 | */ | |
256 | } | |
257 | } | |
5c717440 DJ |
258 | else if (strncmp (class_name, name, name_len) == 0 |
259 | && (class_name[name_len] == '\0' | |
260 | || class_name[name_len] == '<')) | |
003d6d1d | 261 | { |
a04257e6 DC |
262 | /* For GCC 3.x and stabs, constructors and destructors |
263 | have names like __base_ctor and __complete_dtor. | |
264 | Check the physname for now if we're looking for a | |
265 | constructor. */ | |
003d6d1d DJ |
266 | for (field_counter |
267 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
268 | field_counter >= 0; | |
269 | --field_counter) | |
270 | { | |
271 | struct fn_field *f; | |
272 | char *phys_name; | |
273 | ||
274 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
275 | ||
a04257e6 DC |
276 | /* GCC 3.x will never produce stabs stub methods, so |
277 | we don't need to handle this case. */ | |
003d6d1d DJ |
278 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
279 | continue; | |
280 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
281 | if (! is_constructor_name (phys_name)) | |
282 | continue; | |
283 | ||
284 | /* If this method is actually defined, include it in the | |
285 | list. */ | |
286 | sym_arr[i1] = lookup_symbol (phys_name, | |
287 | NULL, VAR_NAMESPACE, | |
288 | (int *) NULL, | |
289 | (struct symtab **) NULL); | |
290 | if (sym_arr[i1]) | |
291 | i1++; | |
292 | } | |
293 | } | |
50641945 FN |
294 | } |
295 | } | |
296 | ||
297 | /* Only search baseclasses if there is no match yet, since names in | |
298 | derived classes override those in baseclasses. | |
299 | ||
300 | FIXME: The above is not true; it is only true of member functions | |
301 | if they have the same number of arguments (??? - section 13.1 of the | |
302 | ARM says the function members are not in the same scope but doesn't | |
303 | really spell out the rules in a way I understand. In any case, if | |
304 | the number of arguments differ this is a case in which we can overload | |
305 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
306 | rather than hiding in this case). */ | |
307 | ||
308 | if (i1 == 0) | |
309 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
310 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
311 | ||
312 | return i1; | |
313 | } | |
314 | ||
315 | /* Helper function for decode_line_1. | |
316 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
317 | the SAL has a symtab. | |
318 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
319 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
320 | line spec is `filename:linenum'. */ | |
321 | ||
322 | static void | |
323 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
324 | char ***canonical) | |
325 | { | |
326 | char **canonical_arr; | |
327 | char *canonical_name; | |
328 | char *filename; | |
329 | struct symtab *s = sal->symtab; | |
330 | ||
331 | if (s == (struct symtab *) NULL | |
332 | || s->filename == (char *) NULL | |
333 | || canonical == (char ***) NULL) | |
334 | return; | |
335 | ||
336 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
337 | *canonical = canonical_arr; | |
338 | ||
339 | filename = s->filename; | |
340 | if (symname != NULL) | |
341 | { | |
342 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
343 | sprintf (canonical_name, "%s:%s", filename, symname); | |
344 | } | |
345 | else | |
346 | { | |
347 | canonical_name = xmalloc (strlen (filename) + 30); | |
348 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
349 | } | |
350 | canonical_arr[0] = canonical_name; | |
351 | } | |
352 | ||
353 | ||
354 | ||
355 | /* Find an instance of the character C in the string S that is outside | |
356 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
357 | strings. Also, ignore the char within a template name, like a ',' |
358 | within foo<int, int>. */ | |
359 | ||
50641945 FN |
360 | static char * |
361 | find_toplevel_char (char *s, char c) | |
362 | { | |
363 | int quoted = 0; /* zero if we're not in quotes; | |
364 | '"' if we're in a double-quoted string; | |
365 | '\'' if we're in a single-quoted string. */ | |
a04257e6 | 366 | int depth = 0; /* Number of unclosed parens we've seen. */ |
50641945 FN |
367 | char *scan; |
368 | ||
369 | for (scan = s; *scan; scan++) | |
370 | { | |
371 | if (quoted) | |
372 | { | |
373 | if (*scan == quoted) | |
374 | quoted = 0; | |
375 | else if (*scan == '\\' && *(scan + 1)) | |
376 | scan++; | |
377 | } | |
378 | else if (*scan == c && ! quoted && depth == 0) | |
379 | return scan; | |
380 | else if (*scan == '"' || *scan == '\'') | |
381 | quoted = *scan; | |
8120c9d5 | 382 | else if (*scan == '(' || *scan == '<') |
50641945 | 383 | depth++; |
8120c9d5 | 384 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
385 | depth--; |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
392 | operate on (ask user if necessary). | |
393 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
394 | as canonical line specs there. */ | |
395 | ||
396 | static struct symtabs_and_lines | |
397 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
398 | char ***canonical) | |
399 | { | |
400 | struct symtabs_and_lines values, return_values; | |
401 | char *args, *arg1; | |
402 | int i; | |
403 | char *prompt; | |
404 | char *symname; | |
405 | struct cleanup *old_chain; | |
406 | char **canonical_arr = (char **) NULL; | |
407 | ||
408 | values.sals = (struct symtab_and_line *) | |
409 | alloca (nelts * sizeof (struct symtab_and_line)); | |
410 | return_values.sals = (struct symtab_and_line *) | |
411 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 412 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
413 | |
414 | if (canonical) | |
415 | { | |
416 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 417 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
418 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
419 | *canonical = canonical_arr; | |
420 | } | |
421 | ||
422 | i = 0; | |
423 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
424 | while (i < nelts) | |
425 | { | |
a04257e6 | 426 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
fe39c653 | 427 | init_sal (&values.sals[i]); |
50641945 FN |
428 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
429 | { | |
430 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
431 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
432 | (i + 2), | |
433 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
434 | values.sals[i].symtab->filename, | |
435 | values.sals[i].line); | |
436 | } | |
437 | else | |
438 | printf_unfiltered ("?HERE\n"); | |
439 | i++; | |
440 | } | |
441 | ||
5cb316ef AC |
442 | prompt = getenv ("PS2"); |
443 | if (prompt == NULL) | |
50641945 FN |
444 | { |
445 | prompt = "> "; | |
446 | } | |
447 | args = command_line_input (prompt, 0, "overload-choice"); | |
448 | ||
449 | if (args == 0 || *args == 0) | |
450 | error_no_arg ("one or more choice numbers"); | |
451 | ||
452 | i = 0; | |
453 | while (*args) | |
454 | { | |
455 | int num; | |
456 | ||
457 | arg1 = args; | |
458 | while (*arg1 >= '0' && *arg1 <= '9') | |
459 | arg1++; | |
460 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
461 | error ("Arguments must be choice numbers."); | |
462 | ||
463 | num = atoi (args); | |
464 | ||
465 | if (num == 0) | |
466 | error ("canceled"); | |
467 | else if (num == 1) | |
468 | { | |
469 | if (canonical_arr) | |
470 | { | |
471 | for (i = 0; i < nelts; i++) | |
472 | { | |
473 | if (canonical_arr[i] == NULL) | |
474 | { | |
475 | symname = SYMBOL_NAME (sym_arr[i]); | |
476 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
477 | } | |
478 | } | |
479 | } | |
480 | memcpy (return_values.sals, values.sals, | |
481 | (nelts * sizeof (struct symtab_and_line))); | |
482 | return_values.nelts = nelts; | |
483 | discard_cleanups (old_chain); | |
484 | return return_values; | |
485 | } | |
486 | ||
487 | if (num >= nelts + 2) | |
488 | { | |
489 | printf_unfiltered ("No choice number %d.\n", num); | |
490 | } | |
491 | else | |
492 | { | |
493 | num -= 2; | |
494 | if (values.sals[num].pc) | |
495 | { | |
496 | if (canonical_arr) | |
497 | { | |
498 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 499 | make_cleanup (xfree, symname); |
50641945 FN |
500 | canonical_arr[i] = savestring (symname, strlen (symname)); |
501 | } | |
502 | return_values.sals[i++] = values.sals[num]; | |
503 | values.sals[num].pc = 0; | |
504 | } | |
505 | else | |
506 | { | |
507 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
508 | } | |
509 | } | |
510 | ||
511 | args = arg1; | |
512 | while (*args == ' ' || *args == '\t') | |
513 | args++; | |
514 | } | |
515 | return_values.nelts = i; | |
516 | discard_cleanups (old_chain); | |
517 | return return_values; | |
518 | } | |
519 | \f | |
520 | /* The parser of linespec itself. */ | |
521 | ||
522 | /* Parse a string that specifies a line number. | |
523 | Pass the address of a char * variable; that variable will be | |
524 | advanced over the characters actually parsed. | |
525 | ||
526 | The string can be: | |
527 | ||
528 | LINENUM -- that line number in current file. PC returned is 0. | |
529 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
530 | FUNCTION -- line number of openbrace of that function. | |
531 | PC returned is the start of the function. | |
532 | VARIABLE -- line number of definition of that variable. | |
533 | PC returned is 0. | |
534 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
535 | *EXPR -- line in which address EXPR appears. | |
536 | ||
537 | This may all be followed by an "if EXPR", which we ignore. | |
538 | ||
539 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
540 | ||
541 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
542 | of real code inside a function when a function is specified, and it is | |
543 | not OK to specify a variable or type to get its line number. | |
544 | ||
545 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
546 | It defaults to current_source_symtab. | |
547 | DEFAULT_LINE specifies the line number to use for relative | |
548 | line numbers (that start with signs). Defaults to current_source_line. | |
549 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
550 | line specs there if necessary. Currently overloaded member functions and | |
551 | line numbers or static functions without a filename yield a canonical | |
552 | line spec. The array and the line spec strings are allocated on the heap, | |
553 | it is the callers responsibility to free them. | |
554 | ||
555 | Note that it is possible to return zero for the symtab | |
556 | if no file is validly specified. Callers must check that. | |
557 | Also, the line number returned may be invalid. */ | |
558 | ||
559 | /* We allow single quotes in various places. This is a hideous | |
560 | kludge, which exists because the completer can't yet deal with the | |
561 | lack of single quotes. FIXME: write a linespec_completer which we | |
562 | can use as appropriate instead of make_symbol_completion_list. */ | |
563 | ||
564 | struct symtabs_and_lines | |
565 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
566 | int default_line, char ***canonical) | |
567 | { | |
f3c39e76 | 568 | char *p; |
614b3b14 | 569 | char *q; |
88d262ca DC |
570 | /* If a file name is specified, this is its symtab. */ |
571 | struct symtab *file_symtab = NULL; | |
50641945 | 572 | |
50641945 | 573 | char *copy; |
636b1a6d DC |
574 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
575 | the closing parenthesis if there are parens. */ | |
576 | char *paren_pointer; | |
577 | /* This says whether or not something in *ARGPTR is quoted with | |
578 | completer_quotes (i.e. with single quotes). */ | |
50641945 | 579 | int is_quoted; |
0960f083 | 580 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
50641945 | 581 | int is_quote_enclosed; |
50641945 | 582 | char *saved_arg = *argptr; |
50641945 | 583 | |
50641945 FN |
584 | /* Defaults have defaults. */ |
585 | ||
44fe14ab DC |
586 | initialize_defaults (&default_symtab, &default_line); |
587 | ||
a04257e6 | 588 | /* See if arg is *PC. */ |
50641945 FN |
589 | |
590 | if (**argptr == '*') | |
44fe14ab | 591 | return decode_indirect (argptr); |
50641945 | 592 | |
a04257e6 DC |
593 | /* Set various flags. 'paren_pointer' is important for overload |
594 | checking, where we allow things like: | |
595 | (gdb) break c::f(int) | |
596 | */ | |
50641945 | 597 | |
636b1a6d | 598 | set_flags (*argptr, &is_quoted, &paren_pointer); |
50641945 | 599 | |
0960f083 DC |
600 | /* Check to see if it's a multipart linespec (with colons or |
601 | periods). */ | |
50641945 | 602 | |
0960f083 | 603 | /* Locate the end of the first half of the linespec. */ |
50641945 | 604 | |
0960f083 | 605 | p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 606 | |
0960f083 | 607 | /* Does it look like there actually were two parts? */ |
50641945 | 608 | |
636b1a6d | 609 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) |
50641945 | 610 | { |
50641945 FN |
611 | if (is_quoted) |
612 | *argptr = *argptr + 1; | |
f3c39e76 DC |
613 | |
614 | /* Is it a C++ or Java compound data structure? */ | |
615 | ||
50641945 | 616 | if (p[0] == '.' || p[1] == ':') |
614b3b14 DC |
617 | return decode_compound (argptr, funfirstline, canonical, |
618 | saved_arg, p); | |
50641945 | 619 | |
f3c39e76 DC |
620 | /* No, the first part is a filename; set s to be that file's |
621 | symtab. Also, move argptr past the filename. */ | |
50641945 | 622 | |
88d262ca | 623 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed); |
50641945 FN |
624 | } |
625 | #if 0 | |
626 | /* No one really seems to know why this was added. It certainly | |
627 | breaks the command line, though, whenever the passed | |
628 | name is of the form ClassName::Method. This bit of code | |
629 | singles out the class name, and if funfirstline is set (for | |
630 | example, you are setting a breakpoint at this function), | |
631 | you get an error. This did not occur with earlier | |
632 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
633 | else | |
634 | { | |
635 | /* Check if what we have till now is a symbol name */ | |
636 | ||
637 | /* We may be looking at a template instantiation such | |
638 | as "foo<int>". Check here whether we know about it, | |
639 | instead of falling through to the code below which | |
640 | handles ordinary function names, because that code | |
641 | doesn't like seeing '<' and '>' in a name -- the | |
642 | skip_quoted call doesn't go past them. So see if we | |
643 | can figure it out right now. */ | |
644 | ||
645 | copy = (char *) alloca (p - *argptr + 1); | |
646 | memcpy (copy, *argptr, p - *argptr); | |
647 | copy[p - *argptr] = '\000'; | |
648 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
649 | if (sym) | |
650 | { | |
50641945 | 651 | *argptr = (*p == '\'') ? p + 1 : p; |
413dad4d DC |
652 | return symbol_found (funfirstline, canonical, copy, sym, |
653 | NULL, sym_symtab); | |
50641945 FN |
654 | } |
655 | /* Otherwise fall out from here and go to file/line spec | |
656 | processing, etc. */ | |
657 | } | |
658 | #endif | |
659 | ||
660 | /* S is specified file's symtab, or 0 if no file specified. | |
661 | arg no longer contains the file name. */ | |
662 | ||
a04257e6 | 663 | /* Check whether arg is all digits (and sign). */ |
50641945 FN |
664 | |
665 | q = *argptr; | |
666 | if (*q == '-' || *q == '+') | |
667 | q++; | |
668 | while (*q >= '0' && *q <= '9') | |
669 | q++; | |
670 | ||
671 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
84fba31b DC |
672 | /* We found a token consisting of all digits -- at least one digit. */ |
673 | return decode_all_digits (argptr, default_symtab, default_line, | |
88d262ca | 674 | canonical, file_symtab, q); |
50641945 FN |
675 | |
676 | /* Arg token is not digits => try it as a variable name | |
677 | Find the next token (everything up to end or next whitespace). */ | |
678 | ||
a04257e6 DC |
679 | if (**argptr == '$') /* May be a convenience variable. */ |
680 | /* One or two $ chars possible. */ | |
681 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); | |
50641945 FN |
682 | else if (is_quoted) |
683 | { | |
684 | p = skip_quoted (*argptr); | |
685 | if (p[-1] != '\'') | |
686 | error ("Unmatched single quote."); | |
687 | } | |
636b1a6d | 688 | else if (paren_pointer != NULL) |
50641945 | 689 | { |
636b1a6d | 690 | p = paren_pointer + 1; |
50641945 FN |
691 | } |
692 | else | |
693 | { | |
694 | p = skip_quoted (*argptr); | |
695 | } | |
696 | ||
50641945 FN |
697 | copy = (char *) alloca (p - *argptr + 1); |
698 | memcpy (copy, *argptr, p - *argptr); | |
699 | copy[p - *argptr] = '\0'; | |
700 | if (p != *argptr | |
701 | && copy[0] | |
702 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 703 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
704 | { |
705 | copy[p - *argptr - 1] = '\0'; | |
706 | copy++; | |
707 | } | |
708 | while (*p == ' ' || *p == '\t') | |
709 | p++; | |
710 | *argptr = p; | |
711 | ||
712 | /* If it starts with $: may be a legitimate variable or routine name | |
713 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
a04257e6 | 714 | be history value, or it may be a convenience variable. */ |
50641945 FN |
715 | |
716 | if (*copy == '$') | |
14e91ac5 | 717 | return decode_dollar (copy, funfirstline, default_symtab, |
88d262ca | 718 | canonical, file_symtab); |
50641945 FN |
719 | |
720 | /* Look up that token as a variable. | |
721 | If file specified, use that file's per-file block to start with. */ | |
722 | ||
88d262ca | 723 | return decode_variable (copy, funfirstline, canonical, file_symtab); |
413dad4d | 724 | } |
50641945 | 725 | |
44fe14ab DC |
726 | \f |
727 | ||
614b3b14 DC |
728 | /* Now, more helper functions for decode_line_1. Some conventions |
729 | that these functions follow: | |
730 | ||
731 | Decode_line_1 typically passes along some of its arguments or local | |
732 | variables to the subfunctions. It passes the variables by | |
733 | reference if they are modified by the subfunction, and by value | |
734 | otherwise. | |
735 | ||
736 | Some of the functions have side effects that don't arise from | |
737 | variables that are passed by reference. In particular, if a | |
738 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
739 | points to; typically, it advances *ARGPTR past whatever substring | |
740 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
741 | function gets passed *ARGPTR instead, which is then called ARG: see | |
742 | set_flags, for example.) Also, functions that return a struct | |
743 | symtabs_and_lines may modify CANONICAL, as in the description of | |
744 | decode_line_1. | |
745 | ||
746 | If a function returns a struct symtabs_and_lines, then that struct | |
747 | will immediately make its way up the call chain to be returned by | |
748 | decode_line_1. In particular, all of the functions decode_XXX | |
749 | calculate the appropriate struct symtabs_and_lines, under the | |
750 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
751 | |
752 | /* First, some functions to initialize stuff at the beggining of the | |
753 | function. */ | |
754 | ||
755 | static void | |
756 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
757 | { | |
758 | if (*default_symtab == 0) | |
759 | { | |
760 | /* Use whatever we have for the default source line. We don't use | |
761 | get_current_or_default_symtab_and_line as it can recurse and call | |
762 | us back! */ | |
763 | struct symtab_and_line cursal = | |
764 | get_current_source_symtab_and_line (); | |
765 | ||
766 | *default_symtab = cursal.symtab; | |
767 | *default_line = cursal.line; | |
768 | } | |
769 | } | |
770 | ||
636b1a6d DC |
771 | static void |
772 | set_flags (char *arg, int *is_quoted, char **paren_pointer) | |
773 | { | |
774 | char *ii; | |
775 | int has_if = 0; | |
776 | ||
777 | /* 'has_if' is for the syntax: | |
a04257e6 DC |
778 | (gdb) break foo if (a==b) |
779 | */ | |
636b1a6d DC |
780 | if ((ii = strstr (arg, " if ")) != NULL || |
781 | (ii = strstr (arg, "\tif ")) != NULL || | |
782 | (ii = strstr (arg, " if\t")) != NULL || | |
783 | (ii = strstr (arg, "\tif\t")) != NULL || | |
784 | (ii = strstr (arg, " if(")) != NULL || | |
785 | (ii = strstr (arg, "\tif( ")) != NULL) | |
786 | has_if = 1; | |
a04257e6 DC |
787 | /* Temporarily zap out "if (condition)" to not confuse the |
788 | parenthesis-checking code below. This is undone below. Do not | |
789 | change ii!! */ | |
636b1a6d DC |
790 | if (has_if) |
791 | { | |
792 | *ii = '\0'; | |
793 | } | |
794 | ||
795 | *is_quoted = (*arg | |
796 | && strchr (get_gdb_completer_quote_characters (), | |
797 | *arg) != NULL); | |
798 | ||
799 | *paren_pointer = strchr (arg, '('); | |
800 | if (*paren_pointer != NULL) | |
801 | *paren_pointer = strrchr (*paren_pointer, ')'); | |
802 | ||
a04257e6 DC |
803 | /* Now that we're safely past the paren_pointer check, put back " if |
804 | (condition)" so outer layers can see it. */ | |
636b1a6d DC |
805 | if (has_if) |
806 | *ii = ' '; | |
807 | } | |
808 | ||
44fe14ab DC |
809 | \f |
810 | ||
811 | /* Decode arg of the form *PC. */ | |
812 | ||
813 | static struct symtabs_and_lines | |
814 | decode_indirect (char **argptr) | |
815 | { | |
816 | struct symtabs_and_lines values; | |
817 | CORE_ADDR pc; | |
818 | ||
819 | (*argptr)++; | |
820 | pc = parse_and_eval_address_1 (argptr); | |
821 | ||
822 | values.sals = (struct symtab_and_line *) | |
823 | xmalloc (sizeof (struct symtab_and_line)); | |
824 | ||
825 | values.nelts = 1; | |
826 | values.sals[0] = find_pc_line (pc, 0); | |
827 | values.sals[0].pc = pc; | |
828 | values.sals[0].section = find_pc_overlay (pc); | |
829 | ||
830 | return values; | |
831 | } | |
413dad4d DC |
832 | |
833 | \f | |
834 | ||
0960f083 DC |
835 | /* Locate the first half of the linespec, ending in a colon, period, |
836 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
837 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
838 | ARGPTR past that and zero out the trailing double quote. */ | |
839 | ||
840 | static char * | |
841 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
842 | { | |
843 | char *ii; | |
844 | char *p, *p1; | |
845 | int has_comma; | |
846 | ||
847 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
848 | and we must isolate the first half. Outer layers will call again later | |
849 | for the second half. | |
850 | ||
851 | Don't count commas that appear in argument lists of overloaded | |
852 | functions, or in quoted strings. It's stupid to go to this much | |
853 | trouble when the rest of the function is such an obvious roach hotel. */ | |
854 | ii = find_toplevel_char (*argptr, ','); | |
855 | has_comma = (ii != 0); | |
856 | ||
a04257e6 DC |
857 | /* Temporarily zap out second half to not confuse the code below. |
858 | This is undone below. Do not change ii!! */ | |
0960f083 DC |
859 | if (has_comma) |
860 | { | |
861 | *ii = '\0'; | |
862 | } | |
863 | ||
a04257e6 DC |
864 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
865 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore | |
866 | inside of <>. */ | |
0960f083 DC |
867 | |
868 | p = *argptr; | |
869 | if (p[0] == '"') | |
870 | { | |
871 | *is_quote_enclosed = 1; | |
872 | (*argptr)++; | |
873 | p++; | |
874 | } | |
875 | else | |
876 | *is_quote_enclosed = 0; | |
877 | for (; *p; p++) | |
878 | { | |
879 | if (p[0] == '<') | |
880 | { | |
881 | char *temp_end = find_template_name_end (p); | |
882 | if (!temp_end) | |
883 | error ("malformed template specification in command"); | |
884 | p = temp_end; | |
885 | } | |
a04257e6 DC |
886 | /* Check for the end of the first half of the linespec. End of |
887 | line, a tab, a double colon or the last single colon, or a | |
888 | space. But if enclosed in double quotes we do not break on | |
889 | enclosed spaces. */ | |
0960f083 DC |
890 | if (!*p |
891 | || p[0] == '\t' | |
892 | || ((p[0] == ':') | |
893 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
894 | || ((p[0] == ' ') && !*is_quote_enclosed)) | |
895 | break; | |
a04257e6 | 896 | if (p[0] == '.' && strchr (p, ':') == NULL) |
0960f083 | 897 | { |
a04257e6 DC |
898 | /* Java qualified method. Find the *last* '.', since the |
899 | others are package qualifiers. */ | |
0960f083 DC |
900 | for (p1 = p; *p1; p1++) |
901 | { | |
902 | if (*p1 == '.') | |
903 | p = p1; | |
904 | } | |
905 | break; | |
906 | } | |
907 | } | |
908 | while (p[0] == ' ' || p[0] == '\t') | |
909 | p++; | |
910 | ||
a04257e6 | 911 | /* If the closing double quote was left at the end, remove it. */ |
0960f083 DC |
912 | if (*is_quote_enclosed) |
913 | { | |
914 | char *closing_quote = strchr (p - 1, '"'); | |
915 | if (closing_quote && closing_quote[1] == '\0') | |
916 | *closing_quote = '\0'; | |
917 | } | |
918 | ||
a04257e6 DC |
919 | /* Now that we've safely parsed the first half, put back ',' so |
920 | outer layers can see it. */ | |
0960f083 DC |
921 | if (has_comma) |
922 | *ii = ','; | |
923 | ||
924 | return p; | |
925 | } | |
926 | ||
927 | \f | |
928 | ||
614b3b14 DC |
929 | /* This handles C++ and Java compound data structures. P should point |
930 | at the first component separator, i.e. double-colon or period. */ | |
931 | ||
932 | static struct symtabs_and_lines | |
933 | decode_compound (char **argptr, int funfirstline, char ***canonical, | |
934 | char *saved_arg, char *p) | |
935 | { | |
936 | struct symtabs_and_lines values; | |
93d91629 | 937 | char *p2; |
614b3b14 DC |
938 | #if 0 |
939 | char *q, *q1; | |
940 | #endif | |
941 | char *saved_arg2 = *argptr; | |
942 | char *temp_end; | |
943 | struct symbol *sym; | |
944 | /* The symtab that SYM was found in. */ | |
945 | struct symtab *sym_symtab; | |
946 | char *copy; | |
947 | struct symbol *sym_class; | |
948 | int i1; | |
949 | struct symbol **sym_arr; | |
950 | struct type *t; | |
951 | ||
952 | /* First check for "global" namespace specification, | |
a04257e6 DC |
953 | of the form "::foo". If found, skip over the colons |
954 | and jump to normal symbol processing. */ | |
614b3b14 DC |
955 | if (p[0] == ':' |
956 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
957 | saved_arg2 += 2; | |
958 | ||
959 | /* We have what looks like a class or namespace | |
960 | scope specification (A::B), possibly with many | |
961 | levels of namespaces or classes (A::B::C::D). | |
962 | ||
963 | Some versions of the HP ANSI C++ compiler (as also possibly | |
964 | other compilers) generate class/function/member names with | |
965 | embedded double-colons if they are inside namespaces. To | |
966 | handle this, we loop a few times, considering larger and | |
967 | larger prefixes of the string as though they were single | |
968 | symbols. So, if the initially supplied string is | |
969 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
970 | then "A::B::C", then "A::B::C::D", and finally | |
971 | "A::B::C::D::foo" as single, monolithic symbols, because | |
972 | A, B, C or D may be namespaces. | |
973 | ||
974 | Note that namespaces can nest only inside other | |
975 | namespaces, and not inside classes. So we need only | |
976 | consider *prefixes* of the string; there is no need to look up | |
a04257e6 | 977 | "B::C" separately as a symbol in the previous example. */ |
614b3b14 | 978 | |
a04257e6 | 979 | p2 = p; /* Save for restart. */ |
614b3b14 DC |
980 | while (1) |
981 | { | |
93d91629 | 982 | sym_class = lookup_prefix_sym (argptr, p); |
614b3b14 DC |
983 | |
984 | if (sym_class && | |
985 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
986 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
987 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
988 | { | |
a04257e6 DC |
989 | /* Arg token is not digits => try it as a function name. |
990 | Find the next token (everything up to end or next | |
991 | blank). */ | |
614b3b14 DC |
992 | if (**argptr |
993 | && strchr (get_gdb_completer_quote_characters (), | |
994 | **argptr) != NULL) | |
995 | { | |
996 | p = skip_quoted (*argptr); | |
997 | *argptr = *argptr + 1; | |
998 | } | |
999 | else | |
1000 | { | |
1001 | p = *argptr; | |
1002 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
1003 | p++; | |
1004 | } | |
1005 | /* | |
1006 | q = operator_chars (*argptr, &q1); | |
1007 | if (q1 - q) | |
1008 | { | |
1009 | char *opname; | |
1010 | char *tmp = alloca (q1 - q + 1); | |
1011 | memcpy (tmp, q, q1 - q); | |
1012 | tmp[q1 - q] = '\0'; | |
1013 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
1014 | if (opname == NULL) | |
1015 | { | |
1016 | cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp); | |
1017 | } | |
1018 | copy = (char*) alloca (3 + strlen(opname)); | |
1019 | sprintf (copy, "__%s", opname); | |
1020 | p = q1; | |
1021 | } | |
1022 | else | |
1023 | */ | |
1024 | { | |
1025 | copy = (char *) alloca (p - *argptr + 1); | |
1026 | memcpy (copy, *argptr, p - *argptr); | |
1027 | copy[p - *argptr] = '\0'; | |
1028 | if (p != *argptr | |
1029 | && copy[p - *argptr - 1] | |
1030 | && strchr (get_gdb_completer_quote_characters (), | |
1031 | copy[p - *argptr - 1]) != NULL) | |
1032 | copy[p - *argptr - 1] = '\0'; | |
1033 | } | |
1034 | ||
a04257e6 | 1035 | /* No line number may be specified. */ |
614b3b14 DC |
1036 | while (*p == ' ' || *p == '\t') |
1037 | p++; | |
1038 | *argptr = p; | |
1039 | ||
1040 | sym = 0; | |
a04257e6 | 1041 | i1 = 0; /* Counter for the symbol array. */ |
614b3b14 DC |
1042 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) |
1043 | * sizeof (struct symbol *)); | |
1044 | ||
1045 | if (destructor_name_p (copy, t)) | |
1046 | { | |
1047 | /* Destructors are a special case. */ | |
1048 | int m_index, f_index; | |
1049 | ||
1050 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
1051 | { | |
1052 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
1053 | ||
1054 | sym_arr[i1] = | |
1055 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
1056 | NULL, VAR_NAMESPACE, (int *) NULL, | |
1057 | (struct symtab **) NULL); | |
1058 | if (sym_arr[i1]) | |
1059 | i1++; | |
1060 | } | |
1061 | } | |
1062 | else | |
1063 | i1 = find_methods (t, copy, sym_arr); | |
1064 | if (i1 == 1) | |
1065 | { | |
1066 | /* There is exactly one field with that name. */ | |
1067 | sym = sym_arr[0]; | |
1068 | ||
1069 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1070 | { | |
1071 | values.sals = (struct symtab_and_line *) | |
1072 | xmalloc (sizeof (struct symtab_and_line)); | |
1073 | values.nelts = 1; | |
1074 | values.sals[0] = find_function_start_sal (sym, | |
1075 | funfirstline); | |
1076 | } | |
1077 | else | |
1078 | { | |
1079 | values.nelts = 0; | |
1080 | } | |
1081 | return values; | |
1082 | } | |
1083 | if (i1 > 0) | |
1084 | { | |
1085 | /* There is more than one field with that name | |
1086 | (overloaded). Ask the user which one to use. */ | |
1087 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | char *tmp; | |
1092 | ||
1093 | if (is_operator_name (copy)) | |
1094 | { | |
1095 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
1096 | strcpy (tmp, "operator "); | |
1097 | strcat (tmp, copy + 3); | |
1098 | } | |
1099 | else | |
1100 | tmp = copy; | |
1101 | if (tmp[0] == '~') | |
1102 | cplusplus_error (saved_arg, | |
1103 | "the class `%s' does not have destructor defined\n", | |
1104 | SYMBOL_SOURCE_NAME (sym_class)); | |
1105 | else | |
1106 | cplusplus_error (saved_arg, | |
1107 | "the class %s does not have any method named %s\n", | |
1108 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
1109 | } | |
1110 | } | |
1111 | ||
a04257e6 DC |
1112 | /* Move pointer up to next possible class/namespace token. */ |
1113 | p = p2 + 1; /* Restart with old value +1. */ | |
1114 | /* Move pointer ahead to next double-colon. */ | |
614b3b14 DC |
1115 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
1116 | { | |
1117 | if (p[0] == '<') | |
1118 | { | |
1119 | temp_end = find_template_name_end (p); | |
1120 | if (!temp_end) | |
1121 | error ("malformed template specification in command"); | |
1122 | p = temp_end; | |
1123 | } | |
1124 | else if ((p[0] == ':') && (p[1] == ':')) | |
a04257e6 | 1125 | break; /* Found double-colon. */ |
614b3b14 DC |
1126 | else |
1127 | p++; | |
1128 | } | |
1129 | ||
1130 | if (*p != ':') | |
a04257e6 | 1131 | break; /* Out of the while (1). */ |
614b3b14 | 1132 | |
a04257e6 DC |
1133 | p2 = p; /* Save restart for next time around. */ |
1134 | *argptr = saved_arg2; /* Restore argptr. */ | |
614b3b14 DC |
1135 | } /* while (1) */ |
1136 | ||
a04257e6 DC |
1137 | /* Last chance attempt -- check entire name as a symbol. Use "copy" |
1138 | in preparation for jumping out of this block, to be consistent | |
1139 | with usage following the jump target. */ | |
614b3b14 DC |
1140 | copy = (char *) alloca (p - saved_arg2 + 1); |
1141 | memcpy (copy, saved_arg2, p - saved_arg2); | |
a04257e6 DC |
1142 | /* Note: if is_quoted should be true, we snuff out quote here |
1143 | anyway. */ | |
614b3b14 | 1144 | copy[p - saved_arg2] = '\000'; |
a04257e6 | 1145 | /* Set argptr to skip over the name. */ |
614b3b14 DC |
1146 | *argptr = (*p == '\'') ? p + 1 : p; |
1147 | /* Look up entire name */ | |
1148 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1149 | if (sym) | |
1150 | return symbol_found (funfirstline, canonical, copy, sym, | |
1151 | NULL, sym_symtab); | |
1152 | ||
a04257e6 DC |
1153 | /* Couldn't find any interpretation as classes/namespaces, so give |
1154 | up. The quotes are important if copy is empty. */ | |
614b3b14 DC |
1155 | cplusplus_error (saved_arg, |
1156 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
1157 | copy); | |
1158 | } | |
1159 | ||
93d91629 DC |
1160 | /* Next come some helper functions for decode_compound. */ |
1161 | ||
1162 | /* Return the symbol corresponding to the substring of *ARGPTR ending | |
1163 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol | |
1164 | name in question, the compound object separator ("::" or "."), and | |
1165 | whitespace. */ | |
1166 | ||
1167 | static struct symbol * | |
1168 | lookup_prefix_sym (char **argptr, char *p) | |
1169 | { | |
1170 | char *p1; | |
1171 | char *copy; | |
1172 | ||
1173 | /* Extract the class name. */ | |
1174 | p1 = p; | |
1175 | while (p != *argptr && p[-1] == ' ') | |
1176 | --p; | |
1177 | copy = (char *) alloca (p - *argptr + 1); | |
1178 | memcpy (copy, *argptr, p - *argptr); | |
1179 | copy[p - *argptr] = 0; | |
1180 | ||
1181 | /* Discard the class name from the arg. */ | |
1182 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
1183 | while (*p == ' ' || *p == '\t') | |
1184 | p++; | |
1185 | *argptr = p; | |
1186 | ||
1187 | return lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
1188 | (struct symtab **) NULL); | |
1189 | } | |
1190 | ||
f3c39e76 DC |
1191 | \f |
1192 | ||
1193 | /* Return the symtab associated to the filename given by the substring | |
1194 | of *ARGPTR ending at P, and advance ARGPTR past that filename. */ | |
1195 | ||
1196 | static struct symtab * | |
1197 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed) | |
1198 | { | |
1199 | char *p1; | |
1200 | char *copy; | |
94cd26f8 | 1201 | struct symtab *file_symtab; |
f3c39e76 DC |
1202 | |
1203 | p1 = p; | |
1204 | while (p != *argptr && p[-1] == ' ') | |
1205 | --p; | |
1206 | if ((*p == '"') && is_quote_enclosed) | |
1207 | --p; | |
1208 | copy = (char *) alloca (p - *argptr + 1); | |
1209 | memcpy (copy, *argptr, p - *argptr); | |
a04257e6 | 1210 | /* It may have the ending quote right after the file name. */ |
f3c39e76 DC |
1211 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1212 | copy[p - *argptr - 1] = 0; | |
1213 | else | |
1214 | copy[p - *argptr] = 0; | |
1215 | ||
1216 | /* Find that file's data. */ | |
94cd26f8 DC |
1217 | file_symtab = lookup_symtab (copy); |
1218 | if (file_symtab == 0) | |
f3c39e76 DC |
1219 | { |
1220 | if (!have_full_symbols () && !have_partial_symbols ()) | |
1221 | error ("No symbol table is loaded. Use the \"file\" command."); | |
1222 | error ("No source file named %s.", copy); | |
1223 | } | |
1224 | ||
1225 | /* Discard the file name from the arg. */ | |
1226 | p = p1 + 1; | |
1227 | while (*p == ' ' || *p == '\t') | |
1228 | p++; | |
1229 | *argptr = p; | |
1230 | ||
94cd26f8 | 1231 | return file_symtab; |
f3c39e76 DC |
1232 | } |
1233 | ||
84fba31b DC |
1234 | \f |
1235 | ||
1236 | /* This decodes a line where the argument is all digits (possibly | |
1237 | preceded by a sign). Q should point to the end of those digits; | |
1238 | the other arguments are as usual. */ | |
1239 | ||
1240 | static struct symtabs_and_lines | |
1241 | decode_all_digits (char **argptr, struct symtab *default_symtab, | |
1242 | int default_line, char ***canonical, | |
88d262ca | 1243 | struct symtab *file_symtab, char *q) |
84fba31b DC |
1244 | |
1245 | { | |
1246 | struct symtabs_and_lines values; | |
1247 | struct symtab_and_line val; | |
1248 | ||
1249 | enum sign | |
1250 | { | |
1251 | none, plus, minus | |
1252 | } | |
1253 | sign = none; | |
1254 | ||
1255 | /* We might need a canonical line spec if no file was specified. */ | |
88d262ca | 1256 | int need_canonical = (file_symtab == 0) ? 1 : 0; |
84fba31b DC |
1257 | |
1258 | init_sal (&val); | |
1259 | ||
1260 | /* This is where we need to make sure that we have good defaults. | |
1261 | We must guarantee that this section of code is never executed | |
1262 | when we are called with just a function name, since | |
1263 | set_default_source_symtab_and_line uses | |
a04257e6 | 1264 | select_source_symtab that calls us with such an argument. */ |
84fba31b | 1265 | |
88d262ca | 1266 | if (file_symtab == 0 && default_symtab == 0) |
84fba31b | 1267 | { |
a04257e6 | 1268 | /* Make sure we have at least a default source file. */ |
84fba31b DC |
1269 | set_default_source_symtab_and_line (); |
1270 | initialize_defaults (&default_symtab, &default_line); | |
1271 | } | |
1272 | ||
1273 | if (**argptr == '+') | |
1274 | sign = plus, (*argptr)++; | |
1275 | else if (**argptr == '-') | |
1276 | sign = minus, (*argptr)++; | |
1277 | val.line = atoi (*argptr); | |
1278 | switch (sign) | |
1279 | { | |
1280 | case plus: | |
1281 | if (q == *argptr) | |
1282 | val.line = 5; | |
88d262ca | 1283 | if (file_symtab == 0) |
84fba31b DC |
1284 | val.line = default_line + val.line; |
1285 | break; | |
1286 | case minus: | |
1287 | if (q == *argptr) | |
1288 | val.line = 15; | |
88d262ca | 1289 | if (file_symtab == 0) |
84fba31b DC |
1290 | val.line = default_line - val.line; |
1291 | else | |
1292 | val.line = 1; | |
1293 | break; | |
1294 | case none: | |
1295 | break; /* No need to adjust val.line. */ | |
1296 | } | |
1297 | ||
1298 | while (*q == ' ' || *q == '\t') | |
1299 | q++; | |
1300 | *argptr = q; | |
88d262ca DC |
1301 | if (file_symtab == 0) |
1302 | file_symtab = default_symtab; | |
84fba31b DC |
1303 | |
1304 | /* It is possible that this source file has more than one symtab, | |
1305 | and that the new line number specification has moved us from the | |
88d262ca DC |
1306 | default (in file_symtab) to a new one. */ |
1307 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); | |
84fba31b | 1308 | if (val.symtab == 0) |
88d262ca | 1309 | val.symtab = file_symtab; |
84fba31b DC |
1310 | |
1311 | val.pc = 0; | |
1312 | values.sals = (struct symtab_and_line *) | |
1313 | xmalloc (sizeof (struct symtab_and_line)); | |
1314 | values.sals[0] = val; | |
1315 | values.nelts = 1; | |
1316 | if (need_canonical) | |
1317 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1318 | return values; | |
1319 | } | |
f3c39e76 | 1320 | |
614b3b14 DC |
1321 | \f |
1322 | ||
14e91ac5 DC |
1323 | /* Decode a linespec starting with a dollar sign. */ |
1324 | ||
1325 | static struct symtabs_and_lines | |
1326 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, | |
88d262ca | 1327 | char ***canonical, struct symtab *file_symtab) |
14e91ac5 DC |
1328 | { |
1329 | struct value *valx; | |
1330 | int index = 0; | |
1331 | int need_canonical = 0; | |
1332 | struct symtabs_and_lines values; | |
1333 | struct symtab_and_line val; | |
1334 | char *p; | |
1335 | struct symbol *sym; | |
1336 | /* The symtab that SYM was found in. */ | |
1337 | struct symtab *sym_symtab; | |
1338 | struct minimal_symbol *msymbol; | |
1339 | ||
1340 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1341 | while (*p >= '0' && *p <= '9') | |
1342 | p++; | |
a04257e6 | 1343 | if (!*p) /* Reached end of token without hitting non-digit. */ |
14e91ac5 | 1344 | { |
a04257e6 | 1345 | /* We have a value history reference. */ |
14e91ac5 DC |
1346 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
1347 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
1348 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1349 | error ("History values used in line specs must have integer values."); | |
1350 | } | |
1351 | else | |
1352 | { | |
1353 | /* Not all digits -- may be user variable/function or a | |
a04257e6 | 1354 | convenience variable. */ |
14e91ac5 | 1355 | |
a04257e6 | 1356 | /* Look up entire name as a symbol first. */ |
14e91ac5 | 1357 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); |
88d262ca | 1358 | file_symtab = (struct symtab *) 0; |
14e91ac5 DC |
1359 | need_canonical = 1; |
1360 | /* Symbol was found --> jump to normal symbol processing. */ | |
1361 | if (sym) | |
1362 | return symbol_found (funfirstline, canonical, copy, sym, | |
1363 | NULL, sym_symtab); | |
1364 | ||
a04257e6 | 1365 | /* If symbol was not found, look in minimal symbol tables. */ |
14e91ac5 | 1366 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
a04257e6 | 1367 | /* Min symbol was found --> jump to minsym processing. */ |
14e91ac5 DC |
1368 | if (msymbol) |
1369 | return minsym_found (funfirstline, msymbol); | |
1370 | ||
a04257e6 | 1371 | /* Not a user variable or function -- must be convenience variable. */ |
88d262ca | 1372 | need_canonical = (file_symtab == 0) ? 1 : 0; |
14e91ac5 DC |
1373 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
1374 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1375 | error ("Convenience variables used in line specs must have integer values."); | |
1376 | } | |
1377 | ||
1378 | init_sal (&val); | |
1379 | ||
a04257e6 | 1380 | /* Either history value or convenience value from above, in valx. */ |
88d262ca | 1381 | val.symtab = file_symtab ? file_symtab : default_symtab; |
14e91ac5 DC |
1382 | val.line = value_as_long (valx); |
1383 | val.pc = 0; | |
1384 | ||
1385 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1386 | values.sals[0] = val; | |
1387 | values.nelts = 1; | |
1388 | ||
1389 | if (need_canonical) | |
1390 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1391 | ||
1392 | return values; | |
1393 | } | |
1394 | ||
bca02a8a DC |
1395 | \f |
1396 | ||
88d262ca | 1397 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
bca02a8a DC |
1398 | look in that symtab's static variables first. */ |
1399 | ||
1400 | static struct symtabs_and_lines | |
1401 | decode_variable (char *copy, int funfirstline, char ***canonical, | |
88d262ca | 1402 | struct symtab *file_symtab) |
bca02a8a DC |
1403 | { |
1404 | struct symbol *sym; | |
1405 | /* The symtab that SYM was found in. */ | |
1406 | struct symtab *sym_symtab; | |
1407 | ||
1408 | struct minimal_symbol *msymbol; | |
1409 | ||
1410 | sym = lookup_symbol (copy, | |
88d262ca DC |
1411 | (file_symtab |
1412 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), | |
1413 | STATIC_BLOCK) | |
bca02a8a DC |
1414 | : get_selected_block (0)), |
1415 | VAR_NAMESPACE, 0, &sym_symtab); | |
1416 | ||
1417 | if (sym != NULL) | |
88d262ca DC |
1418 | return symbol_found (funfirstline, canonical, copy, sym, |
1419 | file_symtab, sym_symtab); | |
bca02a8a DC |
1420 | |
1421 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1422 | ||
1423 | if (msymbol != NULL) | |
1424 | return minsym_found (funfirstline, msymbol); | |
1425 | ||
1426 | if (!have_full_symbols () && | |
1427 | !have_partial_symbols () && !have_minimal_symbols ()) | |
1428 | error ("No symbol table is loaded. Use the \"file\" command."); | |
1429 | ||
1430 | error ("Function \"%s\" not defined.", copy); | |
1431 | } | |
1432 | ||
1433 | ||
14e91ac5 DC |
1434 | \f |
1435 | ||
413dad4d DC |
1436 | /* Now come some functions that are called from multiple places within |
1437 | decode_line_1. */ | |
1438 | ||
1439 | /* We've found a symbol SYM to associate with our linespec; build a | |
1440 | corresponding struct symtabs_and_lines. */ | |
1441 | ||
1442 | static struct symtabs_and_lines | |
1443 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
88d262ca | 1444 | struct symbol *sym, struct symtab *file_symtab, |
413dad4d DC |
1445 | struct symtab *sym_symtab) |
1446 | { | |
1447 | struct symtabs_and_lines values; | |
1448 | ||
1449 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1450 | { |
413dad4d | 1451 | /* Arg is the name of a function */ |
50641945 FN |
1452 | values.sals = (struct symtab_and_line *) |
1453 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1454 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1455 | values.nelts = 1; | |
1456 | ||
1457 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1458 | the line containing the parameters or thereabouts, not | |
1459 | the first line of code. */ | |
1460 | ||
1461 | /* We might need a canonical line spec if it is a static | |
1462 | function. */ | |
88d262ca | 1463 | if (file_symtab == 0) |
50641945 | 1464 | { |
413dad4d DC |
1465 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
1466 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1467 | if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL) | |
1468 | build_canonical_line_spec (values.sals, copy, canonical); | |
50641945 | 1469 | } |
50641945 FN |
1470 | return values; |
1471 | } | |
413dad4d DC |
1472 | else |
1473 | { | |
1474 | if (funfirstline) | |
1475 | error ("\"%s\" is not a function", copy); | |
1476 | else if (SYMBOL_LINE (sym) != 0) | |
1477 | { | |
1478 | /* We know its line number. */ | |
1479 | values.sals = (struct symtab_and_line *) | |
1480 | xmalloc (sizeof (struct symtab_and_line)); | |
1481 | values.nelts = 1; | |
1482 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1483 | values.sals[0].symtab = sym_symtab; | |
1484 | values.sals[0].line = SYMBOL_LINE (sym); | |
1485 | return values; | |
1486 | } | |
1487 | else | |
1488 | /* This can happen if it is compiled with a compiler which doesn't | |
1489 | put out line numbers for variables. */ | |
1490 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1491 | and return? For example, "info line foo" could print | |
1492 | the address. */ | |
1493 | error ("Line number not known for symbol \"%s\"", copy); | |
1494 | } | |
1495 | } | |
50641945 | 1496 | |
413dad4d DC |
1497 | /* We've found a minimal symbol MSYMBOL to associate with our |
1498 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1499 | |
413dad4d DC |
1500 | static struct symtabs_and_lines |
1501 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1502 | { | |
1503 | struct symtabs_and_lines values; | |
1504 | ||
1505 | values.sals = (struct symtab_and_line *) | |
1506 | xmalloc (sizeof (struct symtab_and_line)); | |
1507 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1508 | (struct sec *) 0, 0); | |
1509 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1510 | if (funfirstline) | |
1511 | { | |
1512 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1513 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1514 | } | |
1515 | values.nelts = 1; | |
1516 | return values; | |
50641945 | 1517 | } |