Commit | Line | Data |
---|---|---|
50641945 | 1 | /* Parser for linespec for the GNU debugger, GDB. |
05ff989b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008 |
50641945 FN |
5 | Free Software Foundation, Inc. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
50641945 FN |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
50641945 FN |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
c5f0f3d0 FN |
24 | #include "frame.h" |
25 | #include "command.h" | |
50641945 FN |
26 | #include "symfile.h" |
27 | #include "objfiles.h" | |
0378c332 | 28 | #include "source.h" |
50641945 | 29 | #include "demangle.h" |
c5f0f3d0 FN |
30 | #include "value.h" |
31 | #include "completer.h" | |
015a42b4 | 32 | #include "cp-abi.h" |
c38da1af | 33 | #include "parser-defs.h" |
fe898f56 | 34 | #include "block.h" |
d2630e69 | 35 | #include "objc-lang.h" |
b9362cc7 | 36 | #include "linespec.h" |
05ff989b | 37 | #include "exceptions.h" |
53c5240f | 38 | #include "language.h" |
50641945 FN |
39 | |
40 | /* We share this one with symtab.c, but it is not exported widely. */ | |
41 | ||
42 | extern char *operator_chars (char *, char **); | |
43 | ||
50641945 FN |
44 | /* Prototypes for local functions */ |
45 | ||
44fe14ab DC |
46 | static void initialize_defaults (struct symtab **default_symtab, |
47 | int *default_line); | |
48 | ||
636b1a6d DC |
49 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
50 | ||
44fe14ab DC |
51 | static struct symtabs_and_lines decode_indirect (char **argptr); |
52 | ||
0960f083 DC |
53 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
54 | ||
d2630e69 AF |
55 | static struct symtabs_and_lines decode_objc (char **argptr, |
56 | int funfirstline, | |
57 | struct symtab *file_symtab, | |
58 | char ***canonical, | |
59 | char *saved_arg); | |
60 | ||
614b3b14 DC |
61 | static struct symtabs_and_lines decode_compound (char **argptr, |
62 | int funfirstline, | |
63 | char ***canonical, | |
64 | char *saved_arg, | |
65 | char *p); | |
66 | ||
93d91629 DC |
67 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
68 | ||
4224873a DC |
69 | static struct symtabs_and_lines find_method (int funfirstline, |
70 | char ***canonical, | |
71 | char *saved_arg, | |
72 | char *copy, | |
73 | struct type *t, | |
74 | struct symbol *sym_class); | |
75 | ||
78a11fb4 | 76 | static int collect_methods (char *copy, struct type *t, |
53c5240f | 77 | struct symbol *sym_class, |
78a11fb4 DC |
78 | struct symbol **sym_arr); |
79 | ||
614b3b14 DC |
80 | static NORETURN void cplusplus_error (const char *name, |
81 | const char *fmt, ...) | |
82 | ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); | |
50641945 FN |
83 | |
84 | static int total_number_of_methods (struct type *type); | |
85 | ||
53c5240f PA |
86 | static int find_methods (struct type *, char *, |
87 | enum language, struct symbol **); | |
50641945 | 88 | |
aee8d8ba | 89 | static int add_matching_methods (int method_counter, struct type *t, |
53c5240f | 90 | enum language language, |
aee8d8ba DC |
91 | struct symbol **sym_arr); |
92 | ||
93 | static int add_constructors (int method_counter, struct type *t, | |
53c5240f | 94 | enum language language, |
aee8d8ba DC |
95 | struct symbol **sym_arr); |
96 | ||
50641945 FN |
97 | static void build_canonical_line_spec (struct symtab_and_line *, |
98 | char *, char ***); | |
99 | ||
100 | static char *find_toplevel_char (char *s, char c); | |
101 | ||
889f28e2 AF |
102 | static int is_objc_method_format (const char *s); |
103 | ||
50641945 FN |
104 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
105 | int, int, char ***); | |
106 | ||
f3c39e76 | 107 | static struct symtab *symtab_from_filename (char **argptr, |
68219205 JJ |
108 | char *p, int is_quote_enclosed, |
109 | int *not_found_ptr); | |
f3c39e76 | 110 | |
84fba31b DC |
111 | static struct |
112 | symtabs_and_lines decode_all_digits (char **argptr, | |
113 | struct symtab *default_symtab, | |
114 | int default_line, | |
115 | char ***canonical, | |
88d262ca | 116 | struct symtab *file_symtab, |
84fba31b DC |
117 | char *q); |
118 | ||
14e91ac5 DC |
119 | static struct symtabs_and_lines decode_dollar (char *copy, |
120 | int funfirstline, | |
121 | struct symtab *default_symtab, | |
122 | char ***canonical, | |
88d262ca | 123 | struct symtab *file_symtab); |
14e91ac5 | 124 | |
bca02a8a DC |
125 | static struct symtabs_and_lines decode_variable (char *copy, |
126 | int funfirstline, | |
127 | char ***canonical, | |
68219205 JJ |
128 | struct symtab *file_symtab, |
129 | int *not_found_ptr); | |
bca02a8a | 130 | |
413dad4d DC |
131 | static struct |
132 | symtabs_and_lines symbol_found (int funfirstline, | |
133 | char ***canonical, | |
134 | char *copy, | |
135 | struct symbol *sym, | |
88d262ca | 136 | struct symtab *file_symtab, |
413dad4d DC |
137 | struct symtab *sym_symtab); |
138 | ||
139 | static struct | |
140 | symtabs_and_lines minsym_found (int funfirstline, | |
141 | struct minimal_symbol *msymbol); | |
142 | ||
50641945 FN |
143 | /* Helper functions. */ |
144 | ||
255e7dbf AC |
145 | /* Issue a helpful hint on using the command completion feature on |
146 | single quoted demangled C++ symbols as part of the completion | |
147 | error. */ | |
50641945 | 148 | |
614b3b14 | 149 | static NORETURN void |
255e7dbf | 150 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 151 | { |
255e7dbf AC |
152 | struct ui_file *tmp_stream; |
153 | tmp_stream = mem_fileopen (); | |
154 | make_cleanup_ui_file_delete (tmp_stream); | |
155 | ||
156 | { | |
157 | va_list args; | |
158 | va_start (args, fmt); | |
159 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
160 | va_end (args); | |
161 | } | |
162 | ||
50641945 FN |
163 | while (*name == '\'') |
164 | name++; | |
255e7dbf AC |
165 | fprintf_unfiltered (tmp_stream, |
166 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
167 | "(Note leading single quote.)"), | |
168 | name, name); | |
169 | error_stream (tmp_stream); | |
50641945 FN |
170 | } |
171 | ||
172 | /* Return the number of methods described for TYPE, including the | |
173 | methods from types it derives from. This can't be done in the symbol | |
174 | reader because the type of the baseclass might still be stubbed | |
175 | when the definition of the derived class is parsed. */ | |
176 | ||
177 | static int | |
178 | total_number_of_methods (struct type *type) | |
179 | { | |
180 | int n; | |
181 | int count; | |
182 | ||
183 | CHECK_TYPEDEF (type); | |
184 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
185 | return 0; | |
186 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
187 | ||
188 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
189 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
190 | ||
191 | return count; | |
192 | } | |
193 | ||
194 | /* Recursive helper function for decode_line_1. | |
195 | Look for methods named NAME in type T. | |
196 | Return number of matches. | |
197 | Put matches in SYM_ARR, which should have been allocated with | |
198 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
199 | Note that this function is g++ specific. */ | |
200 | ||
201 | static int | |
53c5240f PA |
202 | find_methods (struct type *t, char *name, enum language language, |
203 | struct symbol **sym_arr) | |
50641945 FN |
204 | { |
205 | int i1 = 0; | |
206 | int ibase; | |
50641945 FN |
207 | char *class_name = type_name_no_tag (t); |
208 | ||
209 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
210 | unless we figure out how to get the physname without the name of | |
211 | the class, then the loop can't do any good. */ | |
212 | if (class_name | |
53c5240f PA |
213 | && (lookup_symbol_in_language (class_name, (struct block *) NULL, |
214 | STRUCT_DOMAIN, language, (int *) NULL, | |
8bd1f2c6 | 215 | (struct symtab **) NULL))) |
50641945 FN |
216 | { |
217 | int method_counter; | |
5c717440 | 218 | int name_len = strlen (name); |
50641945 | 219 | |
8bd1f2c6 | 220 | CHECK_TYPEDEF (t); |
50641945 FN |
221 | |
222 | /* Loop over each method name. At this level, all overloads of a name | |
223 | are counted as a single name. There is an inner loop which loops over | |
224 | each overload. */ | |
225 | ||
226 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
227 | method_counter >= 0; | |
228 | --method_counter) | |
229 | { | |
50641945 FN |
230 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
231 | char dem_opname[64]; | |
232 | ||
233 | if (strncmp (method_name, "__", 2) == 0 || | |
234 | strncmp (method_name, "op", 2) == 0 || | |
235 | strncmp (method_name, "type", 4) == 0) | |
236 | { | |
237 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
238 | method_name = dem_opname; | |
239 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
240 | method_name = dem_opname; | |
241 | } | |
242 | ||
13b57657 | 243 | if (strcmp_iw (name, method_name) == 0) |
50641945 | 244 | /* Find all the overloaded methods with that name. */ |
53c5240f | 245 | i1 += add_matching_methods (method_counter, t, language, |
aee8d8ba | 246 | sym_arr + i1); |
5c717440 DJ |
247 | else if (strncmp (class_name, name, name_len) == 0 |
248 | && (class_name[name_len] == '\0' | |
249 | || class_name[name_len] == '<')) | |
53c5240f | 250 | i1 += add_constructors (method_counter, t, language, |
aee8d8ba | 251 | sym_arr + i1); |
50641945 FN |
252 | } |
253 | } | |
254 | ||
255 | /* Only search baseclasses if there is no match yet, since names in | |
256 | derived classes override those in baseclasses. | |
257 | ||
258 | FIXME: The above is not true; it is only true of member functions | |
259 | if they have the same number of arguments (??? - section 13.1 of the | |
260 | ARM says the function members are not in the same scope but doesn't | |
261 | really spell out the rules in a way I understand. In any case, if | |
262 | the number of arguments differ this is a case in which we can overload | |
263 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
264 | rather than hiding in this case). */ | |
265 | ||
266 | if (i1 == 0) | |
267 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
53c5240f PA |
268 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, |
269 | language, sym_arr + i1); | |
50641945 FN |
270 | |
271 | return i1; | |
272 | } | |
273 | ||
aee8d8ba DC |
274 | /* Add the symbols associated to methods of the class whose type is T |
275 | and whose name matches the method indexed by METHOD_COUNTER in the | |
276 | array SYM_ARR. Return the number of methods added. */ | |
277 | ||
278 | static int | |
279 | add_matching_methods (int method_counter, struct type *t, | |
53c5240f | 280 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
281 | { |
282 | int field_counter; | |
283 | int i1 = 0; | |
284 | ||
285 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
286 | field_counter >= 0; | |
287 | --field_counter) | |
288 | { | |
289 | struct fn_field *f; | |
290 | char *phys_name; | |
291 | ||
292 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
293 | ||
294 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
295 | { | |
296 | char *tmp_name; | |
297 | ||
298 | tmp_name = gdb_mangle_name (t, | |
299 | method_counter, | |
300 | field_counter); | |
301 | phys_name = alloca (strlen (tmp_name) + 1); | |
302 | strcpy (phys_name, tmp_name); | |
303 | xfree (tmp_name); | |
304 | } | |
305 | else | |
306 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
53c5240f | 307 | |
aee8d8ba DC |
308 | /* Destructor is handled by caller, don't add it to |
309 | the list. */ | |
310 | if (is_destructor_name (phys_name) != 0) | |
311 | continue; | |
312 | ||
53c5240f | 313 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 314 | NULL, VAR_DOMAIN, |
53c5240f | 315 | language, |
aee8d8ba DC |
316 | (int *) NULL, |
317 | (struct symtab **) NULL); | |
318 | if (sym_arr[i1]) | |
319 | i1++; | |
320 | else | |
321 | { | |
322 | /* This error message gets printed, but the method | |
323 | still seems to be found | |
324 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
325 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
326 | language_cplus, | |
327 | DMGL_PARAMS | DMGL_ANSI); | |
328 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
329 | */ | |
330 | } | |
331 | } | |
332 | ||
333 | return i1; | |
334 | } | |
335 | ||
336 | /* Add the symbols associated to constructors of the class whose type | |
337 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the | |
338 | array SYM_ARR. Return the number of methods added. */ | |
339 | ||
340 | static int | |
341 | add_constructors (int method_counter, struct type *t, | |
53c5240f | 342 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
343 | { |
344 | int field_counter; | |
345 | int i1 = 0; | |
346 | ||
347 | /* For GCC 3.x and stabs, constructors and destructors | |
348 | have names like __base_ctor and __complete_dtor. | |
349 | Check the physname for now if we're looking for a | |
350 | constructor. */ | |
351 | for (field_counter | |
352 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
353 | field_counter >= 0; | |
354 | --field_counter) | |
355 | { | |
356 | struct fn_field *f; | |
357 | char *phys_name; | |
53c5240f | 358 | |
aee8d8ba DC |
359 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
360 | ||
361 | /* GCC 3.x will never produce stabs stub methods, so | |
362 | we don't need to handle this case. */ | |
363 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
364 | continue; | |
365 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
366 | if (! is_constructor_name (phys_name)) | |
367 | continue; | |
368 | ||
369 | /* If this method is actually defined, include it in the | |
370 | list. */ | |
53c5240f | 371 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 372 | NULL, VAR_DOMAIN, |
53c5240f | 373 | language, |
aee8d8ba DC |
374 | (int *) NULL, |
375 | (struct symtab **) NULL); | |
376 | if (sym_arr[i1]) | |
377 | i1++; | |
378 | } | |
379 | ||
380 | return i1; | |
381 | } | |
382 | ||
50641945 FN |
383 | /* Helper function for decode_line_1. |
384 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
385 | the SAL has a symtab. | |
386 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
387 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
388 | line spec is `filename:linenum'. */ | |
389 | ||
390 | static void | |
391 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
392 | char ***canonical) | |
393 | { | |
394 | char **canonical_arr; | |
395 | char *canonical_name; | |
396 | char *filename; | |
397 | struct symtab *s = sal->symtab; | |
398 | ||
399 | if (s == (struct symtab *) NULL | |
400 | || s->filename == (char *) NULL | |
401 | || canonical == (char ***) NULL) | |
402 | return; | |
403 | ||
404 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
405 | *canonical = canonical_arr; | |
406 | ||
407 | filename = s->filename; | |
408 | if (symname != NULL) | |
409 | { | |
410 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
411 | sprintf (canonical_name, "%s:%s", filename, symname); | |
412 | } | |
413 | else | |
414 | { | |
415 | canonical_name = xmalloc (strlen (filename) + 30); | |
416 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
417 | } | |
418 | canonical_arr[0] = canonical_name; | |
419 | } | |
420 | ||
421 | ||
422 | ||
423 | /* Find an instance of the character C in the string S that is outside | |
424 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
425 | strings. Also, ignore the char within a template name, like a ',' |
426 | within foo<int, int>. */ | |
427 | ||
50641945 FN |
428 | static char * |
429 | find_toplevel_char (char *s, char c) | |
430 | { | |
431 | int quoted = 0; /* zero if we're not in quotes; | |
432 | '"' if we're in a double-quoted string; | |
433 | '\'' if we're in a single-quoted string. */ | |
a04257e6 | 434 | int depth = 0; /* Number of unclosed parens we've seen. */ |
50641945 FN |
435 | char *scan; |
436 | ||
437 | for (scan = s; *scan; scan++) | |
438 | { | |
439 | if (quoted) | |
440 | { | |
441 | if (*scan == quoted) | |
442 | quoted = 0; | |
443 | else if (*scan == '\\' && *(scan + 1)) | |
444 | scan++; | |
445 | } | |
446 | else if (*scan == c && ! quoted && depth == 0) | |
447 | return scan; | |
448 | else if (*scan == '"' || *scan == '\'') | |
449 | quoted = *scan; | |
8120c9d5 | 450 | else if (*scan == '(' || *scan == '<') |
50641945 | 451 | depth++; |
8120c9d5 | 452 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
453 | depth--; |
454 | } | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
889f28e2 AF |
459 | /* Determines if the gives string corresponds to an Objective-C method |
460 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols | |
461 | are allowed to have spaces and parentheses in them. */ | |
462 | ||
463 | static int | |
464 | is_objc_method_format (const char *s) | |
465 | { | |
466 | if (s == NULL || *s == '\0') | |
467 | return 0; | |
468 | /* Handle arguments with the format FILENAME:SYMBOL. */ | |
469 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) | |
470 | && (s[2] == '[') && strchr(s, ']')) | |
471 | return 1; | |
472 | /* Handle arguments that are just SYMBOL. */ | |
473 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) | |
474 | return 1; | |
475 | return 0; | |
476 | } | |
477 | ||
50641945 FN |
478 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
479 | operate on (ask user if necessary). | |
480 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
481 | as canonical line specs there. */ | |
482 | ||
483 | static struct symtabs_and_lines | |
484 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
485 | char ***canonical) | |
486 | { | |
487 | struct symtabs_and_lines values, return_values; | |
488 | char *args, *arg1; | |
489 | int i; | |
490 | char *prompt; | |
491 | char *symname; | |
492 | struct cleanup *old_chain; | |
493 | char **canonical_arr = (char **) NULL; | |
494 | ||
495 | values.sals = (struct symtab_and_line *) | |
496 | alloca (nelts * sizeof (struct symtab_and_line)); | |
497 | return_values.sals = (struct symtab_and_line *) | |
498 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 499 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
500 | |
501 | if (canonical) | |
502 | { | |
503 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 504 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
505 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
506 | *canonical = canonical_arr; | |
507 | } | |
508 | ||
509 | i = 0; | |
a3f17187 | 510 | printf_unfiltered (_("[0] cancel\n[1] all\n")); |
50641945 FN |
511 | while (i < nelts) |
512 | { | |
a04257e6 | 513 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
fe39c653 | 514 | init_sal (&values.sals[i]); |
50641945 FN |
515 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
516 | { | |
517 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
63cd4198 EZ |
518 | if (values.sals[i].symtab) |
519 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
520 | (i + 2), | |
521 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
522 | values.sals[i].symtab->filename, | |
523 | values.sals[i].line); | |
524 | else | |
a3f17187 | 525 | printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n"), |
63cd4198 EZ |
526 | (i + 2), |
527 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
528 | values.sals[i].line); | |
529 | ||
50641945 FN |
530 | } |
531 | else | |
a3f17187 | 532 | printf_unfiltered (_("?HERE\n")); |
50641945 FN |
533 | i++; |
534 | } | |
535 | ||
5cb316ef AC |
536 | prompt = getenv ("PS2"); |
537 | if (prompt == NULL) | |
50641945 FN |
538 | { |
539 | prompt = "> "; | |
540 | } | |
541 | args = command_line_input (prompt, 0, "overload-choice"); | |
542 | ||
543 | if (args == 0 || *args == 0) | |
e2e0b3e5 | 544 | error_no_arg (_("one or more choice numbers")); |
50641945 FN |
545 | |
546 | i = 0; | |
547 | while (*args) | |
548 | { | |
549 | int num; | |
550 | ||
551 | arg1 = args; | |
552 | while (*arg1 >= '0' && *arg1 <= '9') | |
553 | arg1++; | |
554 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
8a3fe4f8 | 555 | error (_("Arguments must be choice numbers.")); |
50641945 FN |
556 | |
557 | num = atoi (args); | |
558 | ||
559 | if (num == 0) | |
8a3fe4f8 | 560 | error (_("canceled")); |
50641945 FN |
561 | else if (num == 1) |
562 | { | |
563 | if (canonical_arr) | |
564 | { | |
565 | for (i = 0; i < nelts; i++) | |
566 | { | |
567 | if (canonical_arr[i] == NULL) | |
568 | { | |
22abf04a | 569 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[i]); |
50641945 FN |
570 | canonical_arr[i] = savestring (symname, strlen (symname)); |
571 | } | |
572 | } | |
573 | } | |
574 | memcpy (return_values.sals, values.sals, | |
575 | (nelts * sizeof (struct symtab_and_line))); | |
576 | return_values.nelts = nelts; | |
577 | discard_cleanups (old_chain); | |
578 | return return_values; | |
579 | } | |
580 | ||
581 | if (num >= nelts + 2) | |
582 | { | |
a3f17187 | 583 | printf_unfiltered (_("No choice number %d.\n"), num); |
50641945 FN |
584 | } |
585 | else | |
586 | { | |
587 | num -= 2; | |
588 | if (values.sals[num].pc) | |
589 | { | |
590 | if (canonical_arr) | |
591 | { | |
22abf04a | 592 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[num]); |
b8c9b27d | 593 | make_cleanup (xfree, symname); |
50641945 FN |
594 | canonical_arr[i] = savestring (symname, strlen (symname)); |
595 | } | |
596 | return_values.sals[i++] = values.sals[num]; | |
597 | values.sals[num].pc = 0; | |
598 | } | |
599 | else | |
600 | { | |
a3f17187 | 601 | printf_unfiltered (_("duplicate request for %d ignored.\n"), num); |
50641945 FN |
602 | } |
603 | } | |
604 | ||
605 | args = arg1; | |
606 | while (*args == ' ' || *args == '\t') | |
607 | args++; | |
608 | } | |
609 | return_values.nelts = i; | |
610 | discard_cleanups (old_chain); | |
611 | return return_values; | |
612 | } | |
613 | \f | |
614 | /* The parser of linespec itself. */ | |
615 | ||
616 | /* Parse a string that specifies a line number. | |
617 | Pass the address of a char * variable; that variable will be | |
618 | advanced over the characters actually parsed. | |
619 | ||
620 | The string can be: | |
621 | ||
622 | LINENUM -- that line number in current file. PC returned is 0. | |
623 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
624 | FUNCTION -- line number of openbrace of that function. | |
625 | PC returned is the start of the function. | |
626 | VARIABLE -- line number of definition of that variable. | |
627 | PC returned is 0. | |
628 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
629 | *EXPR -- line in which address EXPR appears. | |
630 | ||
631 | This may all be followed by an "if EXPR", which we ignore. | |
632 | ||
633 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
634 | ||
635 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
636 | of real code inside a function when a function is specified, and it is | |
637 | not OK to specify a variable or type to get its line number. | |
638 | ||
639 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
640 | It defaults to current_source_symtab. | |
641 | DEFAULT_LINE specifies the line number to use for relative | |
642 | line numbers (that start with signs). Defaults to current_source_line. | |
643 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
644 | line specs there if necessary. Currently overloaded member functions and | |
645 | line numbers or static functions without a filename yield a canonical | |
646 | line spec. The array and the line spec strings are allocated on the heap, | |
647 | it is the callers responsibility to free them. | |
648 | ||
649 | Note that it is possible to return zero for the symtab | |
650 | if no file is validly specified. Callers must check that. | |
68219205 JJ |
651 | Also, the line number returned may be invalid. |
652 | ||
653 | If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based | |
654 | on whether or not failure occurs due to an unknown function or file. In the case | |
655 | where failure does occur due to an unknown function or file, do not issue an error | |
656 | message. */ | |
50641945 FN |
657 | |
658 | /* We allow single quotes in various places. This is a hideous | |
659 | kludge, which exists because the completer can't yet deal with the | |
660 | lack of single quotes. FIXME: write a linespec_completer which we | |
661 | can use as appropriate instead of make_symbol_completion_list. */ | |
662 | ||
663 | struct symtabs_and_lines | |
664 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
68219205 | 665 | int default_line, char ***canonical, int *not_found_ptr) |
50641945 | 666 | { |
f3c39e76 | 667 | char *p; |
614b3b14 | 668 | char *q; |
88d262ca DC |
669 | /* If a file name is specified, this is its symtab. */ |
670 | struct symtab *file_symtab = NULL; | |
50641945 | 671 | |
50641945 | 672 | char *copy; |
636b1a6d DC |
673 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
674 | the closing parenthesis if there are parens. */ | |
675 | char *paren_pointer; | |
676 | /* This says whether or not something in *ARGPTR is quoted with | |
677 | completer_quotes (i.e. with single quotes). */ | |
50641945 | 678 | int is_quoted; |
0960f083 | 679 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
50641945 | 680 | int is_quote_enclosed; |
d2630e69 | 681 | int is_objc_method = 0; |
50641945 | 682 | char *saved_arg = *argptr; |
50641945 | 683 | |
68219205 JJ |
684 | if (not_found_ptr) |
685 | *not_found_ptr = 0; | |
686 | ||
50641945 FN |
687 | /* Defaults have defaults. */ |
688 | ||
44fe14ab DC |
689 | initialize_defaults (&default_symtab, &default_line); |
690 | ||
a04257e6 | 691 | /* See if arg is *PC. */ |
50641945 FN |
692 | |
693 | if (**argptr == '*') | |
44fe14ab | 694 | return decode_indirect (argptr); |
50641945 | 695 | |
a04257e6 DC |
696 | /* Set various flags. 'paren_pointer' is important for overload |
697 | checking, where we allow things like: | |
698 | (gdb) break c::f(int) | |
699 | */ | |
50641945 | 700 | |
636b1a6d | 701 | set_flags (*argptr, &is_quoted, &paren_pointer); |
50641945 | 702 | |
0960f083 DC |
703 | /* Check to see if it's a multipart linespec (with colons or |
704 | periods). */ | |
50641945 | 705 | |
17763fd9 EZ |
706 | /* Locate the end of the first half of the linespec. |
707 | After the call, for instance, if the argptr string is "foo.c:123" | |
708 | p will point at "123". If there is only one part, like "foo", p | |
709 | will point to "". If this is a C++ name, like "A::B::foo", p will | |
710 | point to "::B::foo". Argptr is not changed by this call. */ | |
50641945 | 711 | |
0960f083 | 712 | p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 713 | |
d2630e69 AF |
714 | /* Check if this is an Objective-C method (anything that starts with |
715 | a '+' or '-' and a '['). */ | |
889f28e2 | 716 | if (is_objc_method_format (p)) |
d2630e69 AF |
717 | { |
718 | is_objc_method = 1; | |
719 | paren_pointer = NULL; /* Just a category name. Ignore it. */ | |
720 | } | |
721 | ||
722 | /* Check if the symbol could be an Objective-C selector. */ | |
723 | ||
724 | { | |
725 | struct symtabs_and_lines values; | |
726 | values = decode_objc (argptr, funfirstline, NULL, | |
727 | canonical, saved_arg); | |
728 | if (values.sals != NULL) | |
729 | return values; | |
730 | } | |
731 | ||
0960f083 | 732 | /* Does it look like there actually were two parts? */ |
50641945 | 733 | |
636b1a6d | 734 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) |
50641945 | 735 | { |
50641945 FN |
736 | if (is_quoted) |
737 | *argptr = *argptr + 1; | |
f3c39e76 | 738 | |
17763fd9 EZ |
739 | /* Is it a C++ or Java compound data structure? |
740 | The check on p[1] == ':' is capturing the case of "::", | |
741 | since p[0]==':' was checked above. | |
742 | Note that the call to decode_compound does everything | |
743 | for us, including the lookup on the symbol table, so we | |
744 | can return now. */ | |
745 | ||
50641945 | 746 | if (p[0] == '.' || p[1] == ':') |
614b3b14 DC |
747 | return decode_compound (argptr, funfirstline, canonical, |
748 | saved_arg, p); | |
50641945 | 749 | |
f3c39e76 DC |
750 | /* No, the first part is a filename; set s to be that file's |
751 | symtab. Also, move argptr past the filename. */ | |
50641945 | 752 | |
68219205 JJ |
753 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, |
754 | not_found_ptr); | |
50641945 FN |
755 | } |
756 | #if 0 | |
757 | /* No one really seems to know why this was added. It certainly | |
758 | breaks the command line, though, whenever the passed | |
759 | name is of the form ClassName::Method. This bit of code | |
760 | singles out the class name, and if funfirstline is set (for | |
761 | example, you are setting a breakpoint at this function), | |
762 | you get an error. This did not occur with earlier | |
763 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
764 | else | |
765 | { | |
766 | /* Check if what we have till now is a symbol name */ | |
767 | ||
768 | /* We may be looking at a template instantiation such | |
769 | as "foo<int>". Check here whether we know about it, | |
770 | instead of falling through to the code below which | |
771 | handles ordinary function names, because that code | |
772 | doesn't like seeing '<' and '>' in a name -- the | |
773 | skip_quoted call doesn't go past them. So see if we | |
774 | can figure it out right now. */ | |
775 | ||
776 | copy = (char *) alloca (p - *argptr + 1); | |
777 | memcpy (copy, *argptr, p - *argptr); | |
778 | copy[p - *argptr] = '\000'; | |
176620f1 | 779 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
50641945 FN |
780 | if (sym) |
781 | { | |
50641945 | 782 | *argptr = (*p == '\'') ? p + 1 : p; |
413dad4d DC |
783 | return symbol_found (funfirstline, canonical, copy, sym, |
784 | NULL, sym_symtab); | |
50641945 FN |
785 | } |
786 | /* Otherwise fall out from here and go to file/line spec | |
787 | processing, etc. */ | |
788 | } | |
789 | #endif | |
790 | ||
791 | /* S is specified file's symtab, or 0 if no file specified. | |
792 | arg no longer contains the file name. */ | |
793 | ||
a04257e6 | 794 | /* Check whether arg is all digits (and sign). */ |
50641945 FN |
795 | |
796 | q = *argptr; | |
797 | if (*q == '-' || *q == '+') | |
798 | q++; | |
799 | while (*q >= '0' && *q <= '9') | |
800 | q++; | |
801 | ||
802 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
84fba31b DC |
803 | /* We found a token consisting of all digits -- at least one digit. */ |
804 | return decode_all_digits (argptr, default_symtab, default_line, | |
88d262ca | 805 | canonical, file_symtab, q); |
50641945 FN |
806 | |
807 | /* Arg token is not digits => try it as a variable name | |
808 | Find the next token (everything up to end or next whitespace). */ | |
809 | ||
a04257e6 DC |
810 | if (**argptr == '$') /* May be a convenience variable. */ |
811 | /* One or two $ chars possible. */ | |
812 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); | |
50641945 FN |
813 | else if (is_quoted) |
814 | { | |
815 | p = skip_quoted (*argptr); | |
816 | if (p[-1] != '\'') | |
8a3fe4f8 | 817 | error (_("Unmatched single quote.")); |
50641945 | 818 | } |
d2630e69 AF |
819 | else if (is_objc_method) |
820 | { | |
821 | /* allow word separators in method names for Obj-C */ | |
822 | p = skip_quoted_chars (*argptr, NULL, ""); | |
823 | } | |
636b1a6d | 824 | else if (paren_pointer != NULL) |
50641945 | 825 | { |
636b1a6d | 826 | p = paren_pointer + 1; |
50641945 FN |
827 | } |
828 | else | |
829 | { | |
830 | p = skip_quoted (*argptr); | |
831 | } | |
832 | ||
50641945 FN |
833 | copy = (char *) alloca (p - *argptr + 1); |
834 | memcpy (copy, *argptr, p - *argptr); | |
835 | copy[p - *argptr] = '\0'; | |
836 | if (p != *argptr | |
837 | && copy[0] | |
838 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 839 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
840 | { |
841 | copy[p - *argptr - 1] = '\0'; | |
842 | copy++; | |
843 | } | |
844 | while (*p == ' ' || *p == '\t') | |
845 | p++; | |
846 | *argptr = p; | |
847 | ||
848 | /* If it starts with $: may be a legitimate variable or routine name | |
849 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
a04257e6 | 850 | be history value, or it may be a convenience variable. */ |
50641945 FN |
851 | |
852 | if (*copy == '$') | |
14e91ac5 | 853 | return decode_dollar (copy, funfirstline, default_symtab, |
88d262ca | 854 | canonical, file_symtab); |
50641945 FN |
855 | |
856 | /* Look up that token as a variable. | |
857 | If file specified, use that file's per-file block to start with. */ | |
858 | ||
68219205 JJ |
859 | return decode_variable (copy, funfirstline, canonical, |
860 | file_symtab, not_found_ptr); | |
413dad4d | 861 | } |
50641945 | 862 | |
44fe14ab DC |
863 | \f |
864 | ||
614b3b14 DC |
865 | /* Now, more helper functions for decode_line_1. Some conventions |
866 | that these functions follow: | |
867 | ||
868 | Decode_line_1 typically passes along some of its arguments or local | |
869 | variables to the subfunctions. It passes the variables by | |
870 | reference if they are modified by the subfunction, and by value | |
871 | otherwise. | |
872 | ||
873 | Some of the functions have side effects that don't arise from | |
874 | variables that are passed by reference. In particular, if a | |
875 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
876 | points to; typically, it advances *ARGPTR past whatever substring | |
877 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
878 | function gets passed *ARGPTR instead, which is then called ARG: see | |
879 | set_flags, for example.) Also, functions that return a struct | |
880 | symtabs_and_lines may modify CANONICAL, as in the description of | |
881 | decode_line_1. | |
882 | ||
883 | If a function returns a struct symtabs_and_lines, then that struct | |
884 | will immediately make its way up the call chain to be returned by | |
885 | decode_line_1. In particular, all of the functions decode_XXX | |
886 | calculate the appropriate struct symtabs_and_lines, under the | |
887 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
888 | |
889 | /* First, some functions to initialize stuff at the beggining of the | |
890 | function. */ | |
891 | ||
892 | static void | |
893 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
894 | { | |
895 | if (*default_symtab == 0) | |
896 | { | |
897 | /* Use whatever we have for the default source line. We don't use | |
898 | get_current_or_default_symtab_and_line as it can recurse and call | |
899 | us back! */ | |
900 | struct symtab_and_line cursal = | |
901 | get_current_source_symtab_and_line (); | |
902 | ||
903 | *default_symtab = cursal.symtab; | |
904 | *default_line = cursal.line; | |
905 | } | |
906 | } | |
907 | ||
636b1a6d DC |
908 | static void |
909 | set_flags (char *arg, int *is_quoted, char **paren_pointer) | |
910 | { | |
911 | char *ii; | |
912 | int has_if = 0; | |
913 | ||
914 | /* 'has_if' is for the syntax: | |
a04257e6 DC |
915 | (gdb) break foo if (a==b) |
916 | */ | |
636b1a6d DC |
917 | if ((ii = strstr (arg, " if ")) != NULL || |
918 | (ii = strstr (arg, "\tif ")) != NULL || | |
919 | (ii = strstr (arg, " if\t")) != NULL || | |
920 | (ii = strstr (arg, "\tif\t")) != NULL || | |
921 | (ii = strstr (arg, " if(")) != NULL || | |
922 | (ii = strstr (arg, "\tif( ")) != NULL) | |
923 | has_if = 1; | |
a04257e6 DC |
924 | /* Temporarily zap out "if (condition)" to not confuse the |
925 | parenthesis-checking code below. This is undone below. Do not | |
926 | change ii!! */ | |
636b1a6d DC |
927 | if (has_if) |
928 | { | |
929 | *ii = '\0'; | |
930 | } | |
931 | ||
932 | *is_quoted = (*arg | |
933 | && strchr (get_gdb_completer_quote_characters (), | |
934 | *arg) != NULL); | |
935 | ||
936 | *paren_pointer = strchr (arg, '('); | |
937 | if (*paren_pointer != NULL) | |
938 | *paren_pointer = strrchr (*paren_pointer, ')'); | |
939 | ||
a04257e6 DC |
940 | /* Now that we're safely past the paren_pointer check, put back " if |
941 | (condition)" so outer layers can see it. */ | |
636b1a6d DC |
942 | if (has_if) |
943 | *ii = ' '; | |
944 | } | |
945 | ||
44fe14ab DC |
946 | \f |
947 | ||
948 | /* Decode arg of the form *PC. */ | |
949 | ||
950 | static struct symtabs_and_lines | |
951 | decode_indirect (char **argptr) | |
952 | { | |
953 | struct symtabs_and_lines values; | |
954 | CORE_ADDR pc; | |
955 | ||
956 | (*argptr)++; | |
957 | pc = parse_and_eval_address_1 (argptr); | |
958 | ||
959 | values.sals = (struct symtab_and_line *) | |
960 | xmalloc (sizeof (struct symtab_and_line)); | |
961 | ||
962 | values.nelts = 1; | |
963 | values.sals[0] = find_pc_line (pc, 0); | |
964 | values.sals[0].pc = pc; | |
965 | values.sals[0].section = find_pc_overlay (pc); | |
ed0616c6 | 966 | values.sals[0].explicit_pc = 1; |
44fe14ab DC |
967 | |
968 | return values; | |
969 | } | |
413dad4d DC |
970 | |
971 | \f | |
972 | ||
0960f083 DC |
973 | /* Locate the first half of the linespec, ending in a colon, period, |
974 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
975 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
17763fd9 EZ |
976 | ARGPTR past that and zero out the trailing double quote. |
977 | If ARGPTR is just a simple name like "main", p will point to "" | |
978 | at the end. */ | |
0960f083 DC |
979 | |
980 | static char * | |
981 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
982 | { | |
983 | char *ii; | |
984 | char *p, *p1; | |
985 | int has_comma; | |
986 | ||
987 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
988 | and we must isolate the first half. Outer layers will call again later | |
989 | for the second half. | |
990 | ||
991 | Don't count commas that appear in argument lists of overloaded | |
992 | functions, or in quoted strings. It's stupid to go to this much | |
993 | trouble when the rest of the function is such an obvious roach hotel. */ | |
994 | ii = find_toplevel_char (*argptr, ','); | |
995 | has_comma = (ii != 0); | |
996 | ||
a04257e6 DC |
997 | /* Temporarily zap out second half to not confuse the code below. |
998 | This is undone below. Do not change ii!! */ | |
0960f083 DC |
999 | if (has_comma) |
1000 | { | |
1001 | *ii = '\0'; | |
1002 | } | |
1003 | ||
a04257e6 DC |
1004 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
1005 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore | |
1006 | inside of <>. */ | |
0960f083 DC |
1007 | |
1008 | p = *argptr; | |
1009 | if (p[0] == '"') | |
1010 | { | |
1011 | *is_quote_enclosed = 1; | |
1012 | (*argptr)++; | |
1013 | p++; | |
1014 | } | |
1015 | else | |
1016 | *is_quote_enclosed = 0; | |
1017 | for (; *p; p++) | |
1018 | { | |
1019 | if (p[0] == '<') | |
1020 | { | |
1021 | char *temp_end = find_template_name_end (p); | |
1022 | if (!temp_end) | |
8a3fe4f8 | 1023 | error (_("malformed template specification in command")); |
0960f083 DC |
1024 | p = temp_end; |
1025 | } | |
d2630e69 AF |
1026 | /* Check for a colon and a plus or minus and a [ (which |
1027 | indicates an Objective-C method) */ | |
889f28e2 | 1028 | if (is_objc_method_format (p)) |
d2630e69 AF |
1029 | { |
1030 | break; | |
1031 | } | |
a04257e6 DC |
1032 | /* Check for the end of the first half of the linespec. End of |
1033 | line, a tab, a double colon or the last single colon, or a | |
1034 | space. But if enclosed in double quotes we do not break on | |
1035 | enclosed spaces. */ | |
0960f083 DC |
1036 | if (!*p |
1037 | || p[0] == '\t' | |
1038 | || ((p[0] == ':') | |
1039 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
1040 | || ((p[0] == ' ') && !*is_quote_enclosed)) | |
1041 | break; | |
a04257e6 | 1042 | if (p[0] == '.' && strchr (p, ':') == NULL) |
0960f083 | 1043 | { |
a04257e6 DC |
1044 | /* Java qualified method. Find the *last* '.', since the |
1045 | others are package qualifiers. */ | |
0960f083 DC |
1046 | for (p1 = p; *p1; p1++) |
1047 | { | |
1048 | if (*p1 == '.') | |
1049 | p = p1; | |
1050 | } | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | while (p[0] == ' ' || p[0] == '\t') | |
1055 | p++; | |
1056 | ||
a04257e6 | 1057 | /* If the closing double quote was left at the end, remove it. */ |
0960f083 DC |
1058 | if (*is_quote_enclosed) |
1059 | { | |
1060 | char *closing_quote = strchr (p - 1, '"'); | |
1061 | if (closing_quote && closing_quote[1] == '\0') | |
1062 | *closing_quote = '\0'; | |
1063 | } | |
1064 | ||
a04257e6 DC |
1065 | /* Now that we've safely parsed the first half, put back ',' so |
1066 | outer layers can see it. */ | |
0960f083 DC |
1067 | if (has_comma) |
1068 | *ii = ','; | |
1069 | ||
1070 | return p; | |
1071 | } | |
1072 | ||
1073 | \f | |
1074 | ||
d2630e69 AF |
1075 | /* Here's where we recognise an Objective-C Selector. An Objective C |
1076 | selector may be implemented by more than one class, therefore it | |
1077 | may represent more than one method/function. This gives us a | |
1078 | situation somewhat analogous to C++ overloading. If there's more | |
1079 | than one method that could represent the selector, then use some of | |
1080 | the existing C++ code to let the user choose one. */ | |
1081 | ||
1082 | struct symtabs_and_lines | |
1083 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, | |
1084 | char ***canonical, char *saved_arg) | |
1085 | { | |
1086 | struct symtabs_and_lines values; | |
1087 | struct symbol **sym_arr = NULL; | |
1088 | struct symbol *sym = NULL; | |
1089 | char *copy = NULL; | |
1090 | struct block *block = NULL; | |
15550d6b MK |
1091 | unsigned i1 = 0; |
1092 | unsigned i2 = 0; | |
d2630e69 AF |
1093 | |
1094 | values.sals = NULL; | |
1095 | values.nelts = 0; | |
1096 | ||
1097 | if (file_symtab != NULL) | |
1098 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK); | |
1099 | else | |
1100 | block = get_selected_block (0); | |
1101 | ||
1102 | copy = find_imps (file_symtab, block, *argptr, NULL, &i1, &i2); | |
1103 | ||
1104 | if (i1 > 0) | |
1105 | { | |
1106 | sym_arr = (struct symbol **) alloca ((i1 + 1) * sizeof (struct symbol *)); | |
46be51c4 | 1107 | sym_arr[i1] = NULL; |
d2630e69 AF |
1108 | |
1109 | copy = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); | |
1110 | *argptr = copy; | |
1111 | } | |
1112 | ||
1113 | /* i1 now represents the TOTAL number of matches found. | |
1114 | i2 represents how many HIGH-LEVEL (struct symbol) matches, | |
1115 | which will come first in the sym_arr array. Any low-level | |
1116 | (minimal_symbol) matches will follow those. */ | |
1117 | ||
1118 | if (i1 == 1) | |
1119 | { | |
1120 | if (i2 > 0) | |
1121 | { | |
1122 | /* Already a struct symbol. */ | |
1123 | sym = sym_arr[0]; | |
1124 | } | |
1125 | else | |
1126 | { | |
1127 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])); | |
1128 | if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]), SYMBOL_LINKAGE_NAME (sym)) != 0) | |
1129 | { | |
8a3fe4f8 | 1130 | warning (_("debugging symbol \"%s\" does not match selector; ignoring"), SYMBOL_LINKAGE_NAME (sym)); |
d2630e69 AF |
1131 | sym = NULL; |
1132 | } | |
1133 | } | |
1134 | ||
1135 | values.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
1136 | values.nelts = 1; | |
1137 | ||
1138 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1139 | { | |
1140 | /* Canonicalize this, so it remains resolved for dylib loads. */ | |
1141 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1142 | build_canonical_line_spec (values.sals, SYMBOL_NATURAL_NAME (sym), canonical); | |
1143 | } | |
1144 | else | |
1145 | { | |
1146 | /* The only match was a non-debuggable symbol. */ | |
46be51c4 | 1147 | values.sals[0].symtab = NULL; |
d2630e69 AF |
1148 | values.sals[0].line = 0; |
1149 | values.sals[0].end = 0; | |
1150 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym_arr[0]); | |
1151 | } | |
1152 | return values; | |
1153 | } | |
1154 | ||
1155 | if (i1 > 1) | |
1156 | { | |
1157 | /* More than one match. The user must choose one or more. */ | |
1158 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); | |
1159 | } | |
1160 | ||
1161 | return values; | |
1162 | } | |
1163 | ||
614b3b14 | 1164 | /* This handles C++ and Java compound data structures. P should point |
17763fd9 EZ |
1165 | at the first component separator, i.e. double-colon or period. As |
1166 | an example, on entrance to this function we could have ARGPTR | |
1167 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ | |
614b3b14 DC |
1168 | |
1169 | static struct symtabs_and_lines | |
1170 | decode_compound (char **argptr, int funfirstline, char ***canonical, | |
1171 | char *saved_arg, char *p) | |
1172 | { | |
1173 | struct symtabs_and_lines values; | |
93d91629 | 1174 | char *p2; |
614b3b14 DC |
1175 | char *saved_arg2 = *argptr; |
1176 | char *temp_end; | |
1177 | struct symbol *sym; | |
1178 | /* The symtab that SYM was found in. */ | |
1179 | struct symtab *sym_symtab; | |
1180 | char *copy; | |
1181 | struct symbol *sym_class; | |
614b3b14 DC |
1182 | struct symbol **sym_arr; |
1183 | struct type *t; | |
1184 | ||
17763fd9 EZ |
1185 | /* First check for "global" namespace specification, of the form |
1186 | "::foo". If found, skip over the colons and jump to normal | |
1187 | symbol processing. I.e. the whole line specification starts with | |
1188 | "::" (note the condition that *argptr == p). */ | |
614b3b14 DC |
1189 | if (p[0] == ':' |
1190 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
1191 | saved_arg2 += 2; | |
1192 | ||
87b3ede8 DC |
1193 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
1194 | ||
1195 | 1) AAA::inA is the name of a class. In that case, presumably it | |
1196 | has a method called "fun"; we then look up that method using | |
1197 | find_method. | |
1198 | ||
1199 | 2) AAA::inA isn't the name of a class. In that case, either the | |
1200 | user made a typo or AAA::inA is the name of a namespace. | |
1201 | Either way, we just look up AAA::inA::fun with lookup_symbol. | |
1202 | ||
1203 | Thus, our first task is to find everything before the last set of | |
1204 | double-colons and figure out if it's the name of a class. So we | |
1205 | first loop through all of the double-colons. */ | |
614b3b14 | 1206 | |
a04257e6 | 1207 | p2 = p; /* Save for restart. */ |
17763fd9 EZ |
1208 | |
1209 | /* This is very messy. Following the example above we have now the | |
1210 | following pointers: | |
1211 | p -> "::inA::fun" | |
1212 | argptr -> "AAA::inA::fun | |
1213 | saved_arg -> "AAA::inA::fun | |
1214 | saved_arg2 -> "AAA::inA::fun | |
1215 | p2 -> "::inA::fun". */ | |
1216 | ||
1217 | /* In the loop below, with these strings, we'll make 2 passes, each | |
1218 | is marked in comments.*/ | |
1219 | ||
614b3b14 DC |
1220 | while (1) |
1221 | { | |
a04257e6 | 1222 | /* Move pointer up to next possible class/namespace token. */ |
17763fd9 | 1223 | |
a04257e6 | 1224 | p = p2 + 1; /* Restart with old value +1. */ |
17763fd9 EZ |
1225 | |
1226 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", | |
1227 | i.e. if there is a double-colon, p will now point to the | |
1228 | second colon. */ | |
87b3ede8 | 1229 | /* PASS2: p2->"::fun", p->":fun" */ |
17763fd9 | 1230 | |
a04257e6 | 1231 | /* Move pointer ahead to next double-colon. */ |
614b3b14 DC |
1232 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
1233 | { | |
1234 | if (p[0] == '<') | |
1235 | { | |
1236 | temp_end = find_template_name_end (p); | |
1237 | if (!temp_end) | |
8a3fe4f8 | 1238 | error (_("malformed template specification in command")); |
614b3b14 DC |
1239 | p = temp_end; |
1240 | } | |
17763fd9 EZ |
1241 | /* Note that, since, at the start of this loop, p would be |
1242 | pointing to the second colon in a double-colon, we only | |
1243 | satisfy the condition below if there is another | |
1244 | double-colon to the right (after). I.e. there is another | |
1245 | component that can be a class or a namespace. I.e, if at | |
1246 | the beginning of this loop (PASS1), we had | |
1247 | p->":inA::fun", we'll trigger this when p has been | |
1248 | advanced to point to "::fun". */ | |
87b3ede8 | 1249 | /* PASS2: we will not trigger this. */ |
614b3b14 | 1250 | else if ((p[0] == ':') && (p[1] == ':')) |
a04257e6 | 1251 | break; /* Found double-colon. */ |
614b3b14 | 1252 | else |
87b3ede8 DC |
1253 | /* PASS2: We'll keep getting here, until p->"", at which point |
1254 | we exit this loop. */ | |
614b3b14 DC |
1255 | p++; |
1256 | } | |
1257 | ||
1258 | if (*p != ':') | |
17763fd9 EZ |
1259 | break; /* Out of the while (1). This would happen |
1260 | for instance if we have looked up | |
1261 | unsuccessfully all the components of the | |
87b3ede8 | 1262 | string, and p->""(PASS2) */ |
17763fd9 EZ |
1263 | |
1264 | /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e | |
1265 | string ended). */ | |
1266 | /* Save restart for next time around. */ | |
1267 | p2 = p; | |
1268 | /* Restore argptr as it was on entry to this function. */ | |
1269 | *argptr = saved_arg2; | |
87b3ede8 DC |
1270 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
1271 | p2->"::fun". */ | |
17763fd9 EZ |
1272 | |
1273 | /* All ready for next pass through the loop. */ | |
614b3b14 DC |
1274 | } /* while (1) */ |
1275 | ||
87b3ede8 DC |
1276 | |
1277 | /* Start of lookup in the symbol tables. */ | |
1278 | ||
1279 | /* Lookup in the symbol table the substring between argptr and | |
1280 | p. Note, this call changes the value of argptr. */ | |
1281 | /* Before the call, argptr->"AAA::inA::fun", | |
1282 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 | |
1283 | unchanged. */ | |
1284 | sym_class = lookup_prefix_sym (argptr, p2); | |
1285 | ||
1286 | /* If sym_class has been found, and if "AAA::inA" is a class, then | |
1287 | we're in case 1 above. So we look up "fun" as a method of that | |
1288 | class. */ | |
1289 | if (sym_class && | |
1290 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
1291 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
1292 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
1293 | { | |
1294 | /* Arg token is not digits => try it as a function name. | |
1295 | Find the next token (everything up to end or next | |
1296 | blank). */ | |
1297 | if (**argptr | |
1298 | && strchr (get_gdb_completer_quote_characters (), | |
1299 | **argptr) != NULL) | |
1300 | { | |
1301 | p = skip_quoted (*argptr); | |
1302 | *argptr = *argptr + 1; | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | /* At this point argptr->"fun". */ | |
1307 | p = *argptr; | |
1308 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
1309 | p++; | |
1310 | /* At this point p->"". String ended. */ | |
1311 | } | |
1312 | ||
1313 | /* Allocate our own copy of the substring between argptr and | |
1314 | p. */ | |
1315 | copy = (char *) alloca (p - *argptr + 1); | |
1316 | memcpy (copy, *argptr, p - *argptr); | |
1317 | copy[p - *argptr] = '\0'; | |
1318 | if (p != *argptr | |
1319 | && copy[p - *argptr - 1] | |
1320 | && strchr (get_gdb_completer_quote_characters (), | |
1321 | copy[p - *argptr - 1]) != NULL) | |
1322 | copy[p - *argptr - 1] = '\0'; | |
1323 | ||
1324 | /* At this point copy->"fun", p->"" */ | |
1325 | ||
1326 | /* No line number may be specified. */ | |
1327 | while (*p == ' ' || *p == '\t') | |
1328 | p++; | |
1329 | *argptr = p; | |
1330 | /* At this point arptr->"". */ | |
1331 | ||
1332 | /* Look for copy as a method of sym_class. */ | |
1333 | /* At this point copy->"fun", sym_class is "AAA:inA", | |
1334 | saved_arg->"AAA::inA::fun". This concludes the scanning of | |
1335 | the string for possible components matches. If we find it | |
1336 | here, we return. If not, and we are at the and of the string, | |
1337 | we'll lookup the whole string in the symbol tables. */ | |
1338 | ||
1339 | return find_method (funfirstline, canonical, saved_arg, | |
1340 | copy, t, sym_class); | |
1341 | ||
1342 | } /* End if symbol found */ | |
1343 | ||
1344 | ||
1345 | /* We couldn't find a class, so we're in case 2 above. We check the | |
1346 | entire name as a symbol instead. */ | |
1347 | ||
614b3b14 DC |
1348 | copy = (char *) alloca (p - saved_arg2 + 1); |
1349 | memcpy (copy, saved_arg2, p - saved_arg2); | |
a04257e6 DC |
1350 | /* Note: if is_quoted should be true, we snuff out quote here |
1351 | anyway. */ | |
614b3b14 | 1352 | copy[p - saved_arg2] = '\000'; |
a04257e6 | 1353 | /* Set argptr to skip over the name. */ |
614b3b14 | 1354 | *argptr = (*p == '\'') ? p + 1 : p; |
17763fd9 | 1355 | |
614b3b14 | 1356 | /* Look up entire name */ |
176620f1 | 1357 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
614b3b14 DC |
1358 | if (sym) |
1359 | return symbol_found (funfirstline, canonical, copy, sym, | |
1360 | NULL, sym_symtab); | |
1361 | ||
a04257e6 DC |
1362 | /* Couldn't find any interpretation as classes/namespaces, so give |
1363 | up. The quotes are important if copy is empty. */ | |
614b3b14 DC |
1364 | cplusplus_error (saved_arg, |
1365 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
1366 | copy); | |
1367 | } | |
1368 | ||
93d91629 DC |
1369 | /* Next come some helper functions for decode_compound. */ |
1370 | ||
1371 | /* Return the symbol corresponding to the substring of *ARGPTR ending | |
1372 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol | |
1373 | name in question, the compound object separator ("::" or "."), and | |
17763fd9 EZ |
1374 | whitespace. Note that *ARGPTR is changed whether or not the |
1375 | lookup_symbol call finds anything (i.e we return NULL). As an | |
1376 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ | |
93d91629 DC |
1377 | |
1378 | static struct symbol * | |
1379 | lookup_prefix_sym (char **argptr, char *p) | |
1380 | { | |
1381 | char *p1; | |
1382 | char *copy; | |
1383 | ||
1384 | /* Extract the class name. */ | |
1385 | p1 = p; | |
1386 | while (p != *argptr && p[-1] == ' ') | |
1387 | --p; | |
1388 | copy = (char *) alloca (p - *argptr + 1); | |
1389 | memcpy (copy, *argptr, p - *argptr); | |
1390 | copy[p - *argptr] = 0; | |
1391 | ||
17763fd9 | 1392 | /* Discard the class name from the argptr. */ |
93d91629 DC |
1393 | p = p1 + (p1[0] == ':' ? 2 : 1); |
1394 | while (*p == ' ' || *p == '\t') | |
1395 | p++; | |
1396 | *argptr = p; | |
1397 | ||
17763fd9 EZ |
1398 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
1399 | argptr->"inA::fun" */ | |
1400 | ||
176620f1 | 1401 | return lookup_symbol (copy, 0, STRUCT_DOMAIN, 0, |
93d91629 DC |
1402 | (struct symtab **) NULL); |
1403 | } | |
1404 | ||
4224873a DC |
1405 | /* This finds the method COPY in the class whose type is T and whose |
1406 | symbol is SYM_CLASS. */ | |
1407 | ||
1408 | static struct symtabs_and_lines | |
1409 | find_method (int funfirstline, char ***canonical, char *saved_arg, | |
1410 | char *copy, struct type *t, struct symbol *sym_class) | |
1411 | { | |
1412 | struct symtabs_and_lines values; | |
46be51c4 | 1413 | struct symbol *sym = NULL; |
78a11fb4 | 1414 | int i1; /* Counter for the symbol array. */ |
4224873a DC |
1415 | struct symbol **sym_arr = alloca (total_number_of_methods (t) |
1416 | * sizeof (struct symbol *)); | |
1417 | ||
78a11fb4 DC |
1418 | /* Find all methods with a matching name, and put them in |
1419 | sym_arr. */ | |
4224873a | 1420 | |
53c5240f | 1421 | i1 = collect_methods (copy, t, sym_class, sym_arr); |
4224873a | 1422 | |
4224873a DC |
1423 | if (i1 == 1) |
1424 | { | |
1425 | /* There is exactly one field with that name. */ | |
1426 | sym = sym_arr[0]; | |
1427 | ||
1428 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1429 | { | |
1430 | values.sals = (struct symtab_and_line *) | |
1431 | xmalloc (sizeof (struct symtab_and_line)); | |
1432 | values.nelts = 1; | |
1433 | values.sals[0] = find_function_start_sal (sym, | |
1434 | funfirstline); | |
1435 | } | |
1436 | else | |
1437 | { | |
15550d6b | 1438 | values.sals = NULL; |
4224873a DC |
1439 | values.nelts = 0; |
1440 | } | |
1441 | return values; | |
1442 | } | |
1443 | if (i1 > 0) | |
1444 | { | |
1445 | /* There is more than one field with that name | |
1446 | (overloaded). Ask the user which one to use. */ | |
1447 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
1448 | } | |
1449 | else | |
1450 | { | |
1451 | char *tmp; | |
1452 | ||
1453 | if (is_operator_name (copy)) | |
1454 | { | |
1455 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
1456 | strcpy (tmp, "operator "); | |
1457 | strcat (tmp, copy + 3); | |
1458 | } | |
1459 | else | |
1460 | tmp = copy; | |
1461 | if (tmp[0] == '~') | |
1462 | cplusplus_error (saved_arg, | |
1463 | "the class `%s' does not have destructor defined\n", | |
1464 | SYMBOL_PRINT_NAME (sym_class)); | |
1465 | else | |
1466 | cplusplus_error (saved_arg, | |
1467 | "the class %s does not have any method named %s\n", | |
1468 | SYMBOL_PRINT_NAME (sym_class), tmp); | |
1469 | } | |
1470 | } | |
1471 | ||
78a11fb4 DC |
1472 | /* Find all methods named COPY in the class whose type is T, and put |
1473 | them in SYM_ARR. Return the number of methods found. */ | |
1474 | ||
1475 | static int | |
1476 | collect_methods (char *copy, struct type *t, | |
53c5240f | 1477 | struct symbol *sym_class, struct symbol **sym_arr) |
78a11fb4 DC |
1478 | { |
1479 | int i1 = 0; /* Counter for the symbol array. */ | |
1480 | ||
1481 | if (destructor_name_p (copy, t)) | |
1482 | { | |
1483 | /* Destructors are a special case. */ | |
1484 | int m_index, f_index; | |
1485 | ||
1486 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
1487 | { | |
1488 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
1489 | ||
1490 | sym_arr[i1] = | |
1491 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
176620f1 | 1492 | NULL, VAR_DOMAIN, (int *) NULL, |
78a11fb4 DC |
1493 | (struct symtab **) NULL); |
1494 | if (sym_arr[i1]) | |
1495 | i1++; | |
1496 | } | |
1497 | } | |
1498 | else | |
53c5240f | 1499 | i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr); |
78a11fb4 DC |
1500 | |
1501 | return i1; | |
1502 | } | |
1503 | ||
f3c39e76 DC |
1504 | \f |
1505 | ||
1506 | /* Return the symtab associated to the filename given by the substring | |
68219205 JJ |
1507 | of *ARGPTR ending at P, and advance ARGPTR past that filename. If |
1508 | NOT_FOUND_PTR is not null and the source file is not found, store | |
1509 | boolean true at the location pointed to and do not issue an | |
1510 | error message. */ | |
f3c39e76 DC |
1511 | |
1512 | static struct symtab * | |
68219205 JJ |
1513 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, |
1514 | int *not_found_ptr) | |
f3c39e76 DC |
1515 | { |
1516 | char *p1; | |
1517 | char *copy; | |
94cd26f8 | 1518 | struct symtab *file_symtab; |
f3c39e76 DC |
1519 | |
1520 | p1 = p; | |
1521 | while (p != *argptr && p[-1] == ' ') | |
1522 | --p; | |
1523 | if ((*p == '"') && is_quote_enclosed) | |
1524 | --p; | |
1525 | copy = (char *) alloca (p - *argptr + 1); | |
1526 | memcpy (copy, *argptr, p - *argptr); | |
a04257e6 | 1527 | /* It may have the ending quote right after the file name. */ |
f3c39e76 DC |
1528 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1529 | copy[p - *argptr - 1] = 0; | |
1530 | else | |
1531 | copy[p - *argptr] = 0; | |
1532 | ||
1533 | /* Find that file's data. */ | |
94cd26f8 DC |
1534 | file_symtab = lookup_symtab (copy); |
1535 | if (file_symtab == 0) | |
f3c39e76 DC |
1536 | { |
1537 | if (!have_full_symbols () && !have_partial_symbols ()) | |
8a3fe4f8 | 1538 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
68219205 | 1539 | if (not_found_ptr) |
05ff989b | 1540 | *not_found_ptr = 1; |
109c3e39 | 1541 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
f3c39e76 DC |
1542 | } |
1543 | ||
1544 | /* Discard the file name from the arg. */ | |
1545 | p = p1 + 1; | |
1546 | while (*p == ' ' || *p == '\t') | |
1547 | p++; | |
1548 | *argptr = p; | |
1549 | ||
94cd26f8 | 1550 | return file_symtab; |
f3c39e76 DC |
1551 | } |
1552 | ||
84fba31b DC |
1553 | \f |
1554 | ||
1555 | /* This decodes a line where the argument is all digits (possibly | |
1556 | preceded by a sign). Q should point to the end of those digits; | |
1557 | the other arguments are as usual. */ | |
1558 | ||
1559 | static struct symtabs_and_lines | |
1560 | decode_all_digits (char **argptr, struct symtab *default_symtab, | |
1561 | int default_line, char ***canonical, | |
88d262ca | 1562 | struct symtab *file_symtab, char *q) |
84fba31b DC |
1563 | |
1564 | { | |
1565 | struct symtabs_and_lines values; | |
1566 | struct symtab_and_line val; | |
1567 | ||
1568 | enum sign | |
1569 | { | |
1570 | none, plus, minus | |
1571 | } | |
1572 | sign = none; | |
1573 | ||
1574 | /* We might need a canonical line spec if no file was specified. */ | |
46be51c4 | 1575 | int need_canonical = (file_symtab == NULL) ? 1 : 0; |
84fba31b DC |
1576 | |
1577 | init_sal (&val); | |
1578 | ||
1579 | /* This is where we need to make sure that we have good defaults. | |
1580 | We must guarantee that this section of code is never executed | |
1581 | when we are called with just a function name, since | |
1582 | set_default_source_symtab_and_line uses | |
a04257e6 | 1583 | select_source_symtab that calls us with such an argument. */ |
84fba31b | 1584 | |
88d262ca | 1585 | if (file_symtab == 0 && default_symtab == 0) |
84fba31b | 1586 | { |
a04257e6 | 1587 | /* Make sure we have at least a default source file. */ |
84fba31b DC |
1588 | set_default_source_symtab_and_line (); |
1589 | initialize_defaults (&default_symtab, &default_line); | |
1590 | } | |
1591 | ||
1592 | if (**argptr == '+') | |
1593 | sign = plus, (*argptr)++; | |
1594 | else if (**argptr == '-') | |
1595 | sign = minus, (*argptr)++; | |
1596 | val.line = atoi (*argptr); | |
1597 | switch (sign) | |
1598 | { | |
1599 | case plus: | |
1600 | if (q == *argptr) | |
1601 | val.line = 5; | |
88d262ca | 1602 | if (file_symtab == 0) |
84fba31b DC |
1603 | val.line = default_line + val.line; |
1604 | break; | |
1605 | case minus: | |
1606 | if (q == *argptr) | |
1607 | val.line = 15; | |
88d262ca | 1608 | if (file_symtab == 0) |
84fba31b DC |
1609 | val.line = default_line - val.line; |
1610 | else | |
1611 | val.line = 1; | |
1612 | break; | |
1613 | case none: | |
1614 | break; /* No need to adjust val.line. */ | |
1615 | } | |
1616 | ||
1617 | while (*q == ' ' || *q == '\t') | |
1618 | q++; | |
1619 | *argptr = q; | |
88d262ca DC |
1620 | if (file_symtab == 0) |
1621 | file_symtab = default_symtab; | |
84fba31b DC |
1622 | |
1623 | /* It is possible that this source file has more than one symtab, | |
1624 | and that the new line number specification has moved us from the | |
88d262ca DC |
1625 | default (in file_symtab) to a new one. */ |
1626 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); | |
84fba31b | 1627 | if (val.symtab == 0) |
88d262ca | 1628 | val.symtab = file_symtab; |
84fba31b DC |
1629 | |
1630 | val.pc = 0; | |
1631 | values.sals = (struct symtab_and_line *) | |
1632 | xmalloc (sizeof (struct symtab_and_line)); | |
1633 | values.sals[0] = val; | |
1634 | values.nelts = 1; | |
1635 | if (need_canonical) | |
1636 | build_canonical_line_spec (values.sals, NULL, canonical); | |
ed0616c6 | 1637 | values.sals[0].explicit_line = 1; |
84fba31b DC |
1638 | return values; |
1639 | } | |
f3c39e76 | 1640 | |
614b3b14 DC |
1641 | \f |
1642 | ||
14e91ac5 DC |
1643 | /* Decode a linespec starting with a dollar sign. */ |
1644 | ||
1645 | static struct symtabs_and_lines | |
1646 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, | |
88d262ca | 1647 | char ***canonical, struct symtab *file_symtab) |
14e91ac5 DC |
1648 | { |
1649 | struct value *valx; | |
1650 | int index = 0; | |
1651 | int need_canonical = 0; | |
1652 | struct symtabs_and_lines values; | |
1653 | struct symtab_and_line val; | |
1654 | char *p; | |
1655 | struct symbol *sym; | |
1656 | /* The symtab that SYM was found in. */ | |
1657 | struct symtab *sym_symtab; | |
1658 | struct minimal_symbol *msymbol; | |
1659 | ||
1660 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1661 | while (*p >= '0' && *p <= '9') | |
1662 | p++; | |
a04257e6 | 1663 | if (!*p) /* Reached end of token without hitting non-digit. */ |
14e91ac5 | 1664 | { |
a04257e6 | 1665 | /* We have a value history reference. */ |
14e91ac5 DC |
1666 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
1667 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
df407dfe | 1668 | if (TYPE_CODE (value_type (valx)) != TYPE_CODE_INT) |
8a3fe4f8 | 1669 | error (_("History values used in line specs must have integer values.")); |
14e91ac5 DC |
1670 | } |
1671 | else | |
1672 | { | |
1673 | /* Not all digits -- may be user variable/function or a | |
a04257e6 | 1674 | convenience variable. */ |
14e91ac5 | 1675 | |
a04257e6 | 1676 | /* Look up entire name as a symbol first. */ |
176620f1 | 1677 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
46be51c4 | 1678 | file_symtab = (struct symtab *) NULL; |
14e91ac5 DC |
1679 | need_canonical = 1; |
1680 | /* Symbol was found --> jump to normal symbol processing. */ | |
1681 | if (sym) | |
1682 | return symbol_found (funfirstline, canonical, copy, sym, | |
1683 | NULL, sym_symtab); | |
1684 | ||
a04257e6 | 1685 | /* If symbol was not found, look in minimal symbol tables. */ |
14e91ac5 | 1686 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
a04257e6 | 1687 | /* Min symbol was found --> jump to minsym processing. */ |
14e91ac5 DC |
1688 | if (msymbol) |
1689 | return minsym_found (funfirstline, msymbol); | |
1690 | ||
a04257e6 | 1691 | /* Not a user variable or function -- must be convenience variable. */ |
14e91ac5 | 1692 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
df407dfe | 1693 | if (TYPE_CODE (value_type (valx)) != TYPE_CODE_INT) |
8a3fe4f8 | 1694 | error (_("Convenience variables used in line specs must have integer values.")); |
14e91ac5 DC |
1695 | } |
1696 | ||
1697 | init_sal (&val); | |
1698 | ||
a04257e6 | 1699 | /* Either history value or convenience value from above, in valx. */ |
88d262ca | 1700 | val.symtab = file_symtab ? file_symtab : default_symtab; |
14e91ac5 DC |
1701 | val.line = value_as_long (valx); |
1702 | val.pc = 0; | |
1703 | ||
1704 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1705 | values.sals[0] = val; | |
1706 | values.nelts = 1; | |
1707 | ||
1708 | if (need_canonical) | |
1709 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1710 | ||
1711 | return values; | |
1712 | } | |
1713 | ||
bca02a8a DC |
1714 | \f |
1715 | ||
88d262ca | 1716 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
68219205 JJ |
1717 | look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and |
1718 | the function cannot be found, store boolean true in the location pointed to | |
1719 | and do not issue an error message. */ | |
bca02a8a DC |
1720 | |
1721 | static struct symtabs_and_lines | |
1722 | decode_variable (char *copy, int funfirstline, char ***canonical, | |
68219205 | 1723 | struct symtab *file_symtab, int *not_found_ptr) |
bca02a8a DC |
1724 | { |
1725 | struct symbol *sym; | |
1726 | /* The symtab that SYM was found in. */ | |
1727 | struct symtab *sym_symtab; | |
1728 | ||
1729 | struct minimal_symbol *msymbol; | |
1730 | ||
1731 | sym = lookup_symbol (copy, | |
88d262ca DC |
1732 | (file_symtab |
1733 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), | |
1734 | STATIC_BLOCK) | |
bca02a8a | 1735 | : get_selected_block (0)), |
176620f1 | 1736 | VAR_DOMAIN, 0, &sym_symtab); |
bca02a8a DC |
1737 | |
1738 | if (sym != NULL) | |
88d262ca DC |
1739 | return symbol_found (funfirstline, canonical, copy, sym, |
1740 | file_symtab, sym_symtab); | |
bca02a8a DC |
1741 | |
1742 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1743 | ||
1744 | if (msymbol != NULL) | |
1745 | return minsym_found (funfirstline, msymbol); | |
1746 | ||
1747 | if (!have_full_symbols () && | |
1748 | !have_partial_symbols () && !have_minimal_symbols ()) | |
8a3fe4f8 | 1749 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
bca02a8a | 1750 | |
68219205 | 1751 | if (not_found_ptr) |
05ff989b | 1752 | *not_found_ptr = 1; |
109c3e39 | 1753 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
bca02a8a DC |
1754 | } |
1755 | ||
1756 | ||
14e91ac5 DC |
1757 | \f |
1758 | ||
413dad4d DC |
1759 | /* Now come some functions that are called from multiple places within |
1760 | decode_line_1. */ | |
1761 | ||
1762 | /* We've found a symbol SYM to associate with our linespec; build a | |
1763 | corresponding struct symtabs_and_lines. */ | |
1764 | ||
1765 | static struct symtabs_and_lines | |
1766 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
88d262ca | 1767 | struct symbol *sym, struct symtab *file_symtab, |
413dad4d DC |
1768 | struct symtab *sym_symtab) |
1769 | { | |
1770 | struct symtabs_and_lines values; | |
1771 | ||
1772 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1773 | { |
413dad4d | 1774 | /* Arg is the name of a function */ |
50641945 FN |
1775 | values.sals = (struct symtab_and_line *) |
1776 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1777 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1778 | values.nelts = 1; | |
1779 | ||
1780 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1781 | the line containing the parameters or thereabouts, not | |
1782 | the first line of code. */ | |
1783 | ||
1784 | /* We might need a canonical line spec if it is a static | |
1785 | function. */ | |
88d262ca | 1786 | if (file_symtab == 0) |
50641945 | 1787 | { |
413dad4d DC |
1788 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
1789 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1790 | if (lookup_block_symbol (b, copy, NULL, VAR_DOMAIN) != NULL) |
413dad4d | 1791 | build_canonical_line_spec (values.sals, copy, canonical); |
50641945 | 1792 | } |
50641945 FN |
1793 | return values; |
1794 | } | |
413dad4d DC |
1795 | else |
1796 | { | |
1797 | if (funfirstline) | |
8a3fe4f8 | 1798 | error (_("\"%s\" is not a function"), copy); |
413dad4d DC |
1799 | else if (SYMBOL_LINE (sym) != 0) |
1800 | { | |
1801 | /* We know its line number. */ | |
1802 | values.sals = (struct symtab_and_line *) | |
1803 | xmalloc (sizeof (struct symtab_and_line)); | |
1804 | values.nelts = 1; | |
1805 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1806 | values.sals[0].symtab = sym_symtab; | |
1807 | values.sals[0].line = SYMBOL_LINE (sym); | |
1808 | return values; | |
1809 | } | |
1810 | else | |
1811 | /* This can happen if it is compiled with a compiler which doesn't | |
1812 | put out line numbers for variables. */ | |
1813 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1814 | and return? For example, "info line foo" could print | |
1815 | the address. */ | |
8a3fe4f8 | 1816 | error (_("Line number not known for symbol \"%s\""), copy); |
413dad4d DC |
1817 | } |
1818 | } | |
50641945 | 1819 | |
413dad4d DC |
1820 | /* We've found a minimal symbol MSYMBOL to associate with our |
1821 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1822 | |
413dad4d DC |
1823 | static struct symtabs_and_lines |
1824 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1825 | { | |
1826 | struct symtabs_and_lines values; | |
1827 | ||
1828 | values.sals = (struct symtab_and_line *) | |
1829 | xmalloc (sizeof (struct symtab_and_line)); | |
1830 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
198beae2 | 1831 | (struct bfd_section *) 0, 0); |
413dad4d DC |
1832 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); |
1833 | if (funfirstline) | |
1834 | { | |
e48883f7 DJ |
1835 | struct symtab_and_line sal; |
1836 | ||
cbf3b44a UW |
1837 | values.sals[0].pc |
1838 | += gdbarch_deprecated_function_start_offset (current_gdbarch); | |
a433963d UW |
1839 | values.sals[0].pc = gdbarch_skip_prologue |
1840 | (current_gdbarch, values.sals[0].pc); | |
e48883f7 DJ |
1841 | |
1842 | sal = find_pc_sect_line (values.sals[0].pc, values.sals[0].section, 0); | |
1843 | ||
1844 | /* Check if SKIP_PROLOGUE left us in mid-line, and the next | |
1845 | line is still part of the same function. If there is no | |
1846 | line information here, sal.pc will be the passed in PC. */ | |
1847 | if (sal.pc != values.sals[0].pc | |
1848 | && (lookup_minimal_symbol_by_pc_section (values.sals[0].pc, | |
1849 | values.sals[0].section) | |
1850 | == lookup_minimal_symbol_by_pc_section (sal.end, | |
1851 | values.sals[0].section))) | |
1852 | /* Recalculate the line number (might not be N+1). */ | |
1853 | values.sals[0] = find_pc_sect_line (sal.end, values.sals[0].section, 0); | |
413dad4d | 1854 | } |
e48883f7 | 1855 | |
413dad4d DC |
1856 | values.nelts = 1; |
1857 | return values; | |
50641945 | 1858 | } |