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, |
77cd5909 | 3 | 1996, 1997, 1998, 1999, 2000, 2001 |
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" |
50641945 FN |
35 | |
36 | /* We share this one with symtab.c, but it is not exported widely. */ | |
37 | ||
38 | extern char *operator_chars (char *, char **); | |
39 | ||
50641945 FN |
40 | /* Prototypes for local functions */ |
41 | ||
44fe14ab DC |
42 | static void initialize_defaults (struct symtab **default_symtab, |
43 | int *default_line); | |
44 | ||
636b1a6d DC |
45 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
46 | ||
44fe14ab DC |
47 | static struct symtabs_and_lines decode_indirect (char **argptr); |
48 | ||
0960f083 DC |
49 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
50 | ||
614b3b14 DC |
51 | static struct symtabs_and_lines decode_compound (char **argptr, |
52 | int funfirstline, | |
53 | char ***canonical, | |
54 | char *saved_arg, | |
55 | char *p); | |
56 | ||
57 | static NORETURN void cplusplus_error (const char *name, | |
58 | const char *fmt, ...) | |
59 | ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); | |
50641945 FN |
60 | |
61 | static int total_number_of_methods (struct type *type); | |
62 | ||
63 | static int find_methods (struct type *, char *, struct symbol **); | |
64 | ||
65 | static void build_canonical_line_spec (struct symtab_and_line *, | |
66 | char *, char ***); | |
67 | ||
68 | static char *find_toplevel_char (char *s, char c); | |
69 | ||
70 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
71 | int, int, char ***); | |
72 | ||
f3c39e76 DC |
73 | static struct symtab *symtab_from_filename (char **argptr, |
74 | char *p, int is_quote_enclosed); | |
75 | ||
413dad4d DC |
76 | static struct |
77 | symtabs_and_lines symbol_found (int funfirstline, | |
78 | char ***canonical, | |
79 | char *copy, | |
80 | struct symbol *sym, | |
81 | struct symtab *s, | |
82 | struct symtab *sym_symtab); | |
83 | ||
84 | static struct | |
85 | symtabs_and_lines minsym_found (int funfirstline, | |
86 | struct minimal_symbol *msymbol); | |
87 | ||
50641945 FN |
88 | /* Helper functions. */ |
89 | ||
255e7dbf AC |
90 | /* Issue a helpful hint on using the command completion feature on |
91 | single quoted demangled C++ symbols as part of the completion | |
92 | error. */ | |
50641945 | 93 | |
614b3b14 | 94 | static NORETURN void |
255e7dbf | 95 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 96 | { |
255e7dbf AC |
97 | struct ui_file *tmp_stream; |
98 | tmp_stream = mem_fileopen (); | |
99 | make_cleanup_ui_file_delete (tmp_stream); | |
100 | ||
101 | { | |
102 | va_list args; | |
103 | va_start (args, fmt); | |
104 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
105 | va_end (args); | |
106 | } | |
107 | ||
50641945 FN |
108 | while (*name == '\'') |
109 | name++; | |
255e7dbf AC |
110 | fprintf_unfiltered (tmp_stream, |
111 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
112 | "(Note leading single quote.)"), | |
113 | name, name); | |
114 | error_stream (tmp_stream); | |
50641945 FN |
115 | } |
116 | ||
117 | /* Return the number of methods described for TYPE, including the | |
118 | methods from types it derives from. This can't be done in the symbol | |
119 | reader because the type of the baseclass might still be stubbed | |
120 | when the definition of the derived class is parsed. */ | |
121 | ||
122 | static int | |
123 | total_number_of_methods (struct type *type) | |
124 | { | |
125 | int n; | |
126 | int count; | |
127 | ||
128 | CHECK_TYPEDEF (type); | |
129 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
130 | return 0; | |
131 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
132 | ||
133 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
134 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
135 | ||
136 | return count; | |
137 | } | |
138 | ||
139 | /* Recursive helper function for decode_line_1. | |
140 | Look for methods named NAME in type T. | |
141 | Return number of matches. | |
142 | Put matches in SYM_ARR, which should have been allocated with | |
143 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
144 | Note that this function is g++ specific. */ | |
145 | ||
146 | static int | |
147 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
148 | { | |
149 | int i1 = 0; | |
150 | int ibase; | |
50641945 FN |
151 | char *class_name = type_name_no_tag (t); |
152 | ||
153 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
154 | unless we figure out how to get the physname without the name of | |
155 | the class, then the loop can't do any good. */ | |
156 | if (class_name | |
8bd1f2c6 JB |
157 | && (lookup_symbol (class_name, (struct block *) NULL, |
158 | STRUCT_NAMESPACE, (int *) NULL, | |
159 | (struct symtab **) NULL))) | |
50641945 FN |
160 | { |
161 | int method_counter; | |
5c717440 | 162 | int name_len = strlen (name); |
50641945 | 163 | |
8bd1f2c6 | 164 | CHECK_TYPEDEF (t); |
50641945 FN |
165 | |
166 | /* Loop over each method name. At this level, all overloads of a name | |
167 | are counted as a single name. There is an inner loop which loops over | |
168 | each overload. */ | |
169 | ||
170 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
171 | method_counter >= 0; | |
172 | --method_counter) | |
173 | { | |
174 | int field_counter; | |
175 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
176 | char dem_opname[64]; | |
177 | ||
178 | if (strncmp (method_name, "__", 2) == 0 || | |
179 | strncmp (method_name, "op", 2) == 0 || | |
180 | strncmp (method_name, "type", 4) == 0) | |
181 | { | |
182 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
183 | method_name = dem_opname; | |
184 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
185 | method_name = dem_opname; | |
186 | } | |
187 | ||
13b57657 | 188 | if (strcmp_iw (name, method_name) == 0) |
50641945 FN |
189 | /* Find all the overloaded methods with that name. */ |
190 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
191 | field_counter >= 0; | |
192 | --field_counter) | |
193 | { | |
194 | struct fn_field *f; | |
195 | char *phys_name; | |
196 | ||
197 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
198 | ||
199 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
200 | { | |
201 | char *tmp_name; | |
202 | ||
203 | tmp_name = gdb_mangle_name (t, | |
204 | method_counter, | |
205 | field_counter); | |
206 | phys_name = alloca (strlen (tmp_name) + 1); | |
207 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 208 | xfree (tmp_name); |
50641945 FN |
209 | } |
210 | else | |
211 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
8bd1f2c6 | 212 | |
50641945 | 213 | /* Destructor is handled by caller, dont add it to the list */ |
015a42b4 | 214 | if (is_destructor_name (phys_name) != 0) |
50641945 FN |
215 | continue; |
216 | ||
217 | sym_arr[i1] = lookup_symbol (phys_name, | |
218 | NULL, VAR_NAMESPACE, | |
219 | (int *) NULL, | |
220 | (struct symtab **) NULL); | |
221 | if (sym_arr[i1]) | |
222 | i1++; | |
223 | else | |
224 | { | |
225 | /* This error message gets printed, but the method | |
226 | still seems to be found | |
227 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
228 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
229 | language_cplus, | |
230 | DMGL_PARAMS | DMGL_ANSI); | |
231 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
232 | */ | |
233 | } | |
234 | } | |
5c717440 DJ |
235 | else if (strncmp (class_name, name, name_len) == 0 |
236 | && (class_name[name_len] == '\0' | |
237 | || class_name[name_len] == '<')) | |
003d6d1d DJ |
238 | { |
239 | /* For GCC 3.x and stabs, constructors and destructors have names | |
240 | like __base_ctor and __complete_dtor. Check the physname for now | |
241 | if we're looking for a constructor. */ | |
242 | for (field_counter | |
243 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
244 | field_counter >= 0; | |
245 | --field_counter) | |
246 | { | |
247 | struct fn_field *f; | |
248 | char *phys_name; | |
249 | ||
250 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
251 | ||
252 | /* GCC 3.x will never produce stabs stub methods, so we don't need | |
253 | to handle this case. */ | |
254 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
255 | continue; | |
256 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
257 | if (! is_constructor_name (phys_name)) | |
258 | continue; | |
259 | ||
260 | /* If this method is actually defined, include it in the | |
261 | list. */ | |
262 | sym_arr[i1] = lookup_symbol (phys_name, | |
263 | NULL, VAR_NAMESPACE, | |
264 | (int *) NULL, | |
265 | (struct symtab **) NULL); | |
266 | if (sym_arr[i1]) | |
267 | i1++; | |
268 | } | |
269 | } | |
50641945 FN |
270 | } |
271 | } | |
272 | ||
273 | /* Only search baseclasses if there is no match yet, since names in | |
274 | derived classes override those in baseclasses. | |
275 | ||
276 | FIXME: The above is not true; it is only true of member functions | |
277 | if they have the same number of arguments (??? - section 13.1 of the | |
278 | ARM says the function members are not in the same scope but doesn't | |
279 | really spell out the rules in a way I understand. In any case, if | |
280 | the number of arguments differ this is a case in which we can overload | |
281 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
282 | rather than hiding in this case). */ | |
283 | ||
284 | if (i1 == 0) | |
285 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
286 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
287 | ||
288 | return i1; | |
289 | } | |
290 | ||
291 | /* Helper function for decode_line_1. | |
292 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
293 | the SAL has a symtab. | |
294 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
295 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
296 | line spec is `filename:linenum'. */ | |
297 | ||
298 | static void | |
299 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
300 | char ***canonical) | |
301 | { | |
302 | char **canonical_arr; | |
303 | char *canonical_name; | |
304 | char *filename; | |
305 | struct symtab *s = sal->symtab; | |
306 | ||
307 | if (s == (struct symtab *) NULL | |
308 | || s->filename == (char *) NULL | |
309 | || canonical == (char ***) NULL) | |
310 | return; | |
311 | ||
312 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
313 | *canonical = canonical_arr; | |
314 | ||
315 | filename = s->filename; | |
316 | if (symname != NULL) | |
317 | { | |
318 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
319 | sprintf (canonical_name, "%s:%s", filename, symname); | |
320 | } | |
321 | else | |
322 | { | |
323 | canonical_name = xmalloc (strlen (filename) + 30); | |
324 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
325 | } | |
326 | canonical_arr[0] = canonical_name; | |
327 | } | |
328 | ||
329 | ||
330 | ||
331 | /* Find an instance of the character C in the string S that is outside | |
332 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
333 | strings. Also, ignore the char within a template name, like a ',' |
334 | within foo<int, int>. */ | |
335 | ||
50641945 FN |
336 | static char * |
337 | find_toplevel_char (char *s, char c) | |
338 | { | |
339 | int quoted = 0; /* zero if we're not in quotes; | |
340 | '"' if we're in a double-quoted string; | |
341 | '\'' if we're in a single-quoted string. */ | |
342 | int depth = 0; /* number of unclosed parens we've seen */ | |
343 | char *scan; | |
344 | ||
345 | for (scan = s; *scan; scan++) | |
346 | { | |
347 | if (quoted) | |
348 | { | |
349 | if (*scan == quoted) | |
350 | quoted = 0; | |
351 | else if (*scan == '\\' && *(scan + 1)) | |
352 | scan++; | |
353 | } | |
354 | else if (*scan == c && ! quoted && depth == 0) | |
355 | return scan; | |
356 | else if (*scan == '"' || *scan == '\'') | |
357 | quoted = *scan; | |
8120c9d5 | 358 | else if (*scan == '(' || *scan == '<') |
50641945 | 359 | depth++; |
8120c9d5 | 360 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
361 | depth--; |
362 | } | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
368 | operate on (ask user if necessary). | |
369 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
370 | as canonical line specs there. */ | |
371 | ||
372 | static struct symtabs_and_lines | |
373 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
374 | char ***canonical) | |
375 | { | |
376 | struct symtabs_and_lines values, return_values; | |
377 | char *args, *arg1; | |
378 | int i; | |
379 | char *prompt; | |
380 | char *symname; | |
381 | struct cleanup *old_chain; | |
382 | char **canonical_arr = (char **) NULL; | |
383 | ||
384 | values.sals = (struct symtab_and_line *) | |
385 | alloca (nelts * sizeof (struct symtab_and_line)); | |
386 | return_values.sals = (struct symtab_and_line *) | |
387 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 388 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
389 | |
390 | if (canonical) | |
391 | { | |
392 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 393 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
394 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
395 | *canonical = canonical_arr; | |
396 | } | |
397 | ||
398 | i = 0; | |
399 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
400 | while (i < nelts) | |
401 | { | |
fe39c653 EZ |
402 | init_sal (&return_values.sals[i]); /* initialize to zeroes */ |
403 | init_sal (&values.sals[i]); | |
50641945 FN |
404 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
405 | { | |
406 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
407 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
408 | (i + 2), | |
409 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
410 | values.sals[i].symtab->filename, | |
411 | values.sals[i].line); | |
412 | } | |
413 | else | |
414 | printf_unfiltered ("?HERE\n"); | |
415 | i++; | |
416 | } | |
417 | ||
418 | if ((prompt = getenv ("PS2")) == NULL) | |
419 | { | |
420 | prompt = "> "; | |
421 | } | |
422 | args = command_line_input (prompt, 0, "overload-choice"); | |
423 | ||
424 | if (args == 0 || *args == 0) | |
425 | error_no_arg ("one or more choice numbers"); | |
426 | ||
427 | i = 0; | |
428 | while (*args) | |
429 | { | |
430 | int num; | |
431 | ||
432 | arg1 = args; | |
433 | while (*arg1 >= '0' && *arg1 <= '9') | |
434 | arg1++; | |
435 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
436 | error ("Arguments must be choice numbers."); | |
437 | ||
438 | num = atoi (args); | |
439 | ||
440 | if (num == 0) | |
441 | error ("canceled"); | |
442 | else if (num == 1) | |
443 | { | |
444 | if (canonical_arr) | |
445 | { | |
446 | for (i = 0; i < nelts; i++) | |
447 | { | |
448 | if (canonical_arr[i] == NULL) | |
449 | { | |
450 | symname = SYMBOL_NAME (sym_arr[i]); | |
451 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
452 | } | |
453 | } | |
454 | } | |
455 | memcpy (return_values.sals, values.sals, | |
456 | (nelts * sizeof (struct symtab_and_line))); | |
457 | return_values.nelts = nelts; | |
458 | discard_cleanups (old_chain); | |
459 | return return_values; | |
460 | } | |
461 | ||
462 | if (num >= nelts + 2) | |
463 | { | |
464 | printf_unfiltered ("No choice number %d.\n", num); | |
465 | } | |
466 | else | |
467 | { | |
468 | num -= 2; | |
469 | if (values.sals[num].pc) | |
470 | { | |
471 | if (canonical_arr) | |
472 | { | |
473 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 474 | make_cleanup (xfree, symname); |
50641945 FN |
475 | canonical_arr[i] = savestring (symname, strlen (symname)); |
476 | } | |
477 | return_values.sals[i++] = values.sals[num]; | |
478 | values.sals[num].pc = 0; | |
479 | } | |
480 | else | |
481 | { | |
482 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
483 | } | |
484 | } | |
485 | ||
486 | args = arg1; | |
487 | while (*args == ' ' || *args == '\t') | |
488 | args++; | |
489 | } | |
490 | return_values.nelts = i; | |
491 | discard_cleanups (old_chain); | |
492 | return return_values; | |
493 | } | |
494 | \f | |
495 | /* The parser of linespec itself. */ | |
496 | ||
497 | /* Parse a string that specifies a line number. | |
498 | Pass the address of a char * variable; that variable will be | |
499 | advanced over the characters actually parsed. | |
500 | ||
501 | The string can be: | |
502 | ||
503 | LINENUM -- that line number in current file. PC returned is 0. | |
504 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
505 | FUNCTION -- line number of openbrace of that function. | |
506 | PC returned is the start of the function. | |
507 | VARIABLE -- line number of definition of that variable. | |
508 | PC returned is 0. | |
509 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
510 | *EXPR -- line in which address EXPR appears. | |
511 | ||
512 | This may all be followed by an "if EXPR", which we ignore. | |
513 | ||
514 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
515 | ||
516 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
517 | of real code inside a function when a function is specified, and it is | |
518 | not OK to specify a variable or type to get its line number. | |
519 | ||
520 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
521 | It defaults to current_source_symtab. | |
522 | DEFAULT_LINE specifies the line number to use for relative | |
523 | line numbers (that start with signs). Defaults to current_source_line. | |
524 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
525 | line specs there if necessary. Currently overloaded member functions and | |
526 | line numbers or static functions without a filename yield a canonical | |
527 | line spec. The array and the line spec strings are allocated on the heap, | |
528 | it is the callers responsibility to free them. | |
529 | ||
530 | Note that it is possible to return zero for the symtab | |
531 | if no file is validly specified. Callers must check that. | |
532 | Also, the line number returned may be invalid. */ | |
533 | ||
534 | /* We allow single quotes in various places. This is a hideous | |
535 | kludge, which exists because the completer can't yet deal with the | |
536 | lack of single quotes. FIXME: write a linespec_completer which we | |
537 | can use as appropriate instead of make_symbol_completion_list. */ | |
538 | ||
539 | struct symtabs_and_lines | |
540 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
541 | int default_line, char ***canonical) | |
542 | { | |
543 | struct symtabs_and_lines values; | |
50641945 | 544 | struct symtab_and_line val; |
f3c39e76 | 545 | char *p; |
614b3b14 | 546 | char *q; |
f3c39e76 | 547 | struct symtab *s = NULL; |
50641945 | 548 | |
f3c39e76 | 549 | struct symbol *sym; |
50641945 FN |
550 | /* The symtab that SYM was found in. */ |
551 | struct symtab *sym_symtab; | |
552 | ||
f3c39e76 | 553 | struct minimal_symbol *msymbol; |
50641945 | 554 | char *copy; |
636b1a6d DC |
555 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
556 | the closing parenthesis if there are parens. */ | |
557 | char *paren_pointer; | |
558 | /* This says whether or not something in *ARGPTR is quoted with | |
559 | completer_quotes (i.e. with single quotes). */ | |
50641945 | 560 | int is_quoted; |
0960f083 | 561 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
50641945 | 562 | int is_quote_enclosed; |
50641945 | 563 | char *saved_arg = *argptr; |
50641945 | 564 | |
fe39c653 | 565 | init_sal (&val); /* initialize to zeroes */ |
50641945 FN |
566 | |
567 | /* Defaults have defaults. */ | |
568 | ||
44fe14ab DC |
569 | initialize_defaults (&default_symtab, &default_line); |
570 | ||
50641945 FN |
571 | /* See if arg is *PC */ |
572 | ||
573 | if (**argptr == '*') | |
44fe14ab | 574 | return decode_indirect (argptr); |
50641945 | 575 | |
50641945 | 576 | /* Set various flags. |
636b1a6d | 577 | * 'paren_pointer' is important for overload checking, where |
50641945 FN |
578 | * we allow things like: |
579 | * (gdb) break c::f(int) | |
580 | */ | |
581 | ||
636b1a6d | 582 | set_flags (*argptr, &is_quoted, &paren_pointer); |
50641945 | 583 | |
0960f083 DC |
584 | /* Check to see if it's a multipart linespec (with colons or |
585 | periods). */ | |
50641945 | 586 | |
0960f083 | 587 | /* Locate the end of the first half of the linespec. */ |
50641945 | 588 | |
0960f083 | 589 | p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 590 | |
0960f083 | 591 | /* Does it look like there actually were two parts? */ |
50641945 | 592 | |
636b1a6d | 593 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) |
50641945 | 594 | { |
50641945 FN |
595 | if (is_quoted) |
596 | *argptr = *argptr + 1; | |
f3c39e76 DC |
597 | |
598 | /* Is it a C++ or Java compound data structure? */ | |
599 | ||
50641945 | 600 | if (p[0] == '.' || p[1] == ':') |
614b3b14 DC |
601 | return decode_compound (argptr, funfirstline, canonical, |
602 | saved_arg, p); | |
50641945 | 603 | |
f3c39e76 DC |
604 | /* No, the first part is a filename; set s to be that file's |
605 | symtab. Also, move argptr past the filename. */ | |
50641945 | 606 | |
f3c39e76 | 607 | s = symtab_from_filename (argptr, p, is_quote_enclosed); |
50641945 FN |
608 | } |
609 | #if 0 | |
610 | /* No one really seems to know why this was added. It certainly | |
611 | breaks the command line, though, whenever the passed | |
612 | name is of the form ClassName::Method. This bit of code | |
613 | singles out the class name, and if funfirstline is set (for | |
614 | example, you are setting a breakpoint at this function), | |
615 | you get an error. This did not occur with earlier | |
616 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
617 | else | |
618 | { | |
619 | /* Check if what we have till now is a symbol name */ | |
620 | ||
621 | /* We may be looking at a template instantiation such | |
622 | as "foo<int>". Check here whether we know about it, | |
623 | instead of falling through to the code below which | |
624 | handles ordinary function names, because that code | |
625 | doesn't like seeing '<' and '>' in a name -- the | |
626 | skip_quoted call doesn't go past them. So see if we | |
627 | can figure it out right now. */ | |
628 | ||
629 | copy = (char *) alloca (p - *argptr + 1); | |
630 | memcpy (copy, *argptr, p - *argptr); | |
631 | copy[p - *argptr] = '\000'; | |
632 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
633 | if (sym) | |
634 | { | |
50641945 | 635 | *argptr = (*p == '\'') ? p + 1 : p; |
413dad4d DC |
636 | return symbol_found (funfirstline, canonical, copy, sym, |
637 | NULL, sym_symtab); | |
50641945 FN |
638 | } |
639 | /* Otherwise fall out from here and go to file/line spec | |
640 | processing, etc. */ | |
641 | } | |
642 | #endif | |
643 | ||
644 | /* S is specified file's symtab, or 0 if no file specified. | |
645 | arg no longer contains the file name. */ | |
646 | ||
647 | /* Check whether arg is all digits (and sign) */ | |
648 | ||
649 | q = *argptr; | |
650 | if (*q == '-' || *q == '+') | |
651 | q++; | |
652 | while (*q >= '0' && *q <= '9') | |
653 | q++; | |
654 | ||
655 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
656 | { | |
657 | /* We found a token consisting of all digits -- at least one digit. */ | |
658 | enum sign | |
659 | { | |
660 | none, plus, minus | |
661 | } | |
662 | sign = none; | |
663 | ||
664 | /* We might need a canonical line spec if no file was specified. */ | |
665 | int need_canonical = (s == 0) ? 1 : 0; | |
666 | ||
667 | /* This is where we need to make sure that we have good defaults. | |
668 | We must guarantee that this section of code is never executed | |
669 | when we are called with just a function name, since | |
53cb0458 | 670 | set_default_source_symtab_and_line uses |
0378c332 | 671 | select_source_symtab that calls us with such an argument */ |
50641945 FN |
672 | |
673 | if (s == 0 && default_symtab == 0) | |
674 | { | |
53cb0458 FN |
675 | /* Make sure we have at least a default source file. */ |
676 | set_default_source_symtab_and_line (); | |
44fe14ab | 677 | initialize_defaults (&default_symtab, &default_line); |
50641945 FN |
678 | } |
679 | ||
680 | if (**argptr == '+') | |
681 | sign = plus, (*argptr)++; | |
682 | else if (**argptr == '-') | |
683 | sign = minus, (*argptr)++; | |
684 | val.line = atoi (*argptr); | |
685 | switch (sign) | |
686 | { | |
687 | case plus: | |
688 | if (q == *argptr) | |
689 | val.line = 5; | |
690 | if (s == 0) | |
691 | val.line = default_line + val.line; | |
692 | break; | |
693 | case minus: | |
694 | if (q == *argptr) | |
695 | val.line = 15; | |
696 | if (s == 0) | |
697 | val.line = default_line - val.line; | |
698 | else | |
699 | val.line = 1; | |
700 | break; | |
701 | case none: | |
702 | break; /* No need to adjust val.line. */ | |
703 | } | |
704 | ||
705 | while (*q == ' ' || *q == '\t') | |
706 | q++; | |
707 | *argptr = q; | |
708 | if (s == 0) | |
709 | s = default_symtab; | |
710 | ||
711 | /* It is possible that this source file has more than one symtab, | |
712 | and that the new line number specification has moved us from the | |
713 | default (in s) to a new one. */ | |
714 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); | |
715 | if (val.symtab == 0) | |
716 | val.symtab = s; | |
717 | ||
718 | val.pc = 0; | |
719 | values.sals = (struct symtab_and_line *) | |
720 | xmalloc (sizeof (struct symtab_and_line)); | |
721 | values.sals[0] = val; | |
722 | values.nelts = 1; | |
723 | if (need_canonical) | |
724 | build_canonical_line_spec (values.sals, NULL, canonical); | |
725 | return values; | |
726 | } | |
727 | ||
728 | /* Arg token is not digits => try it as a variable name | |
729 | Find the next token (everything up to end or next whitespace). */ | |
730 | ||
731 | if (**argptr == '$') /* May be a convenience variable */ | |
732 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ | |
733 | else if (is_quoted) | |
734 | { | |
735 | p = skip_quoted (*argptr); | |
736 | if (p[-1] != '\'') | |
737 | error ("Unmatched single quote."); | |
738 | } | |
636b1a6d | 739 | else if (paren_pointer != NULL) |
50641945 | 740 | { |
636b1a6d | 741 | p = paren_pointer + 1; |
50641945 FN |
742 | } |
743 | else | |
744 | { | |
745 | p = skip_quoted (*argptr); | |
746 | } | |
747 | ||
50641945 FN |
748 | copy = (char *) alloca (p - *argptr + 1); |
749 | memcpy (copy, *argptr, p - *argptr); | |
750 | copy[p - *argptr] = '\0'; | |
751 | if (p != *argptr | |
752 | && copy[0] | |
753 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 754 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
755 | { |
756 | copy[p - *argptr - 1] = '\0'; | |
757 | copy++; | |
758 | } | |
759 | while (*p == ' ' || *p == '\t') | |
760 | p++; | |
761 | *argptr = p; | |
762 | ||
763 | /* If it starts with $: may be a legitimate variable or routine name | |
764 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
765 | be history value, or it may be a convenience variable */ | |
766 | ||
767 | if (*copy == '$') | |
768 | { | |
3d6d86c6 | 769 | struct value *valx; |
50641945 FN |
770 | int index = 0; |
771 | int need_canonical = 0; | |
772 | ||
773 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
774 | while (*p >= '0' && *p <= '9') | |
775 | p++; | |
776 | if (!*p) /* reached end of token without hitting non-digit */ | |
777 | { | |
778 | /* We have a value history reference */ | |
779 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); | |
780 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
781 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
782 | error ("History values used in line specs must have integer values."); | |
783 | } | |
784 | else | |
785 | { | |
786 | /* Not all digits -- may be user variable/function or a | |
787 | convenience variable */ | |
788 | ||
789 | /* Look up entire name as a symbol first */ | |
790 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
791 | s = (struct symtab *) 0; | |
792 | need_canonical = 1; | |
413dad4d | 793 | /* Symbol was found --> jump to normal symbol processing. */ |
50641945 | 794 | if (sym) |
413dad4d DC |
795 | return symbol_found (funfirstline, canonical, copy, sym, |
796 | NULL, sym_symtab); | |
50641945 FN |
797 | |
798 | /* If symbol was not found, look in minimal symbol tables */ | |
9b27852e | 799 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
50641945 FN |
800 | /* Min symbol was found --> jump to minsym processing. */ |
801 | if (msymbol) | |
413dad4d | 802 | return minsym_found (funfirstline, msymbol); |
50641945 FN |
803 | |
804 | /* Not a user variable or function -- must be convenience variable */ | |
805 | need_canonical = (s == 0) ? 1 : 0; | |
806 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); | |
807 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
808 | error ("Convenience variables used in line specs must have integer values."); | |
809 | } | |
810 | ||
811 | /* Either history value or convenience value from above, in valx */ | |
812 | val.symtab = s ? s : default_symtab; | |
813 | val.line = value_as_long (valx); | |
814 | val.pc = 0; | |
815 | ||
816 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
817 | values.sals[0] = val; | |
818 | values.nelts = 1; | |
819 | ||
820 | if (need_canonical) | |
821 | build_canonical_line_spec (values.sals, NULL, canonical); | |
822 | ||
823 | return values; | |
824 | } | |
825 | ||
826 | ||
827 | /* Look up that token as a variable. | |
828 | If file specified, use that file's per-file block to start with. */ | |
829 | ||
830 | sym = lookup_symbol (copy, | |
831 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
ae767bfb | 832 | : get_selected_block (0)), |
50641945 FN |
833 | VAR_NAMESPACE, 0, &sym_symtab); |
834 | ||
50641945 | 835 | if (sym != NULL) |
413dad4d | 836 | return symbol_found (funfirstline, canonical, copy, sym, s, sym_symtab); |
50641945 | 837 | |
413dad4d | 838 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
50641945 | 839 | |
413dad4d DC |
840 | if (msymbol != NULL) |
841 | return minsym_found (funfirstline, msymbol); | |
50641945 | 842 | |
413dad4d DC |
843 | if (!have_full_symbols () && |
844 | !have_partial_symbols () && !have_minimal_symbols ()) | |
845 | error ("No symbol table is loaded. Use the \"file\" command."); | |
50641945 | 846 | |
413dad4d DC |
847 | error ("Function \"%s\" not defined.", copy); |
848 | return values; /* for lint */ | |
849 | } | |
50641945 | 850 | |
44fe14ab DC |
851 | \f |
852 | ||
614b3b14 DC |
853 | /* Now, more helper functions for decode_line_1. Some conventions |
854 | that these functions follow: | |
855 | ||
856 | Decode_line_1 typically passes along some of its arguments or local | |
857 | variables to the subfunctions. It passes the variables by | |
858 | reference if they are modified by the subfunction, and by value | |
859 | otherwise. | |
860 | ||
861 | Some of the functions have side effects that don't arise from | |
862 | variables that are passed by reference. In particular, if a | |
863 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
864 | points to; typically, it advances *ARGPTR past whatever substring | |
865 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
866 | function gets passed *ARGPTR instead, which is then called ARG: see | |
867 | set_flags, for example.) Also, functions that return a struct | |
868 | symtabs_and_lines may modify CANONICAL, as in the description of | |
869 | decode_line_1. | |
870 | ||
871 | If a function returns a struct symtabs_and_lines, then that struct | |
872 | will immediately make its way up the call chain to be returned by | |
873 | decode_line_1. In particular, all of the functions decode_XXX | |
874 | calculate the appropriate struct symtabs_and_lines, under the | |
875 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
876 | |
877 | /* First, some functions to initialize stuff at the beggining of the | |
878 | function. */ | |
879 | ||
880 | static void | |
881 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
882 | { | |
883 | if (*default_symtab == 0) | |
884 | { | |
885 | /* Use whatever we have for the default source line. We don't use | |
886 | get_current_or_default_symtab_and_line as it can recurse and call | |
887 | us back! */ | |
888 | struct symtab_and_line cursal = | |
889 | get_current_source_symtab_and_line (); | |
890 | ||
891 | *default_symtab = cursal.symtab; | |
892 | *default_line = cursal.line; | |
893 | } | |
894 | } | |
895 | ||
636b1a6d DC |
896 | static void |
897 | set_flags (char *arg, int *is_quoted, char **paren_pointer) | |
898 | { | |
899 | char *ii; | |
900 | int has_if = 0; | |
901 | ||
902 | /* 'has_if' is for the syntax: | |
903 | * (gdb) break foo if (a==b) | |
904 | */ | |
905 | if ((ii = strstr (arg, " if ")) != NULL || | |
906 | (ii = strstr (arg, "\tif ")) != NULL || | |
907 | (ii = strstr (arg, " if\t")) != NULL || | |
908 | (ii = strstr (arg, "\tif\t")) != NULL || | |
909 | (ii = strstr (arg, " if(")) != NULL || | |
910 | (ii = strstr (arg, "\tif( ")) != NULL) | |
911 | has_if = 1; | |
912 | /* Temporarily zap out "if (condition)" to not | |
913 | * confuse the parenthesis-checking code below. | |
914 | * This is undone below. Do not change ii!! | |
915 | */ | |
916 | if (has_if) | |
917 | { | |
918 | *ii = '\0'; | |
919 | } | |
920 | ||
921 | *is_quoted = (*arg | |
922 | && strchr (get_gdb_completer_quote_characters (), | |
923 | *arg) != NULL); | |
924 | ||
925 | *paren_pointer = strchr (arg, '('); | |
926 | if (*paren_pointer != NULL) | |
927 | *paren_pointer = strrchr (*paren_pointer, ')'); | |
928 | ||
929 | /* Now that we're safely past the paren_pointer check, | |
930 | * put back " if (condition)" so outer layers can see it | |
931 | */ | |
932 | if (has_if) | |
933 | *ii = ' '; | |
934 | } | |
935 | ||
44fe14ab DC |
936 | \f |
937 | ||
938 | /* Decode arg of the form *PC. */ | |
939 | ||
940 | static struct symtabs_and_lines | |
941 | decode_indirect (char **argptr) | |
942 | { | |
943 | struct symtabs_and_lines values; | |
944 | CORE_ADDR pc; | |
945 | ||
946 | (*argptr)++; | |
947 | pc = parse_and_eval_address_1 (argptr); | |
948 | ||
949 | values.sals = (struct symtab_and_line *) | |
950 | xmalloc (sizeof (struct symtab_and_line)); | |
951 | ||
952 | values.nelts = 1; | |
953 | values.sals[0] = find_pc_line (pc, 0); | |
954 | values.sals[0].pc = pc; | |
955 | values.sals[0].section = find_pc_overlay (pc); | |
956 | ||
957 | return values; | |
958 | } | |
413dad4d DC |
959 | |
960 | \f | |
961 | ||
0960f083 DC |
962 | /* Locate the first half of the linespec, ending in a colon, period, |
963 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
964 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
965 | ARGPTR past that and zero out the trailing double quote. */ | |
966 | ||
967 | static char * | |
968 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
969 | { | |
970 | char *ii; | |
971 | char *p, *p1; | |
972 | int has_comma; | |
973 | ||
974 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
975 | and we must isolate the first half. Outer layers will call again later | |
976 | for the second half. | |
977 | ||
978 | Don't count commas that appear in argument lists of overloaded | |
979 | functions, or in quoted strings. It's stupid to go to this much | |
980 | trouble when the rest of the function is such an obvious roach hotel. */ | |
981 | ii = find_toplevel_char (*argptr, ','); | |
982 | has_comma = (ii != 0); | |
983 | ||
984 | /* Temporarily zap out second half to not | |
985 | * confuse the code below. | |
986 | * This is undone below. Do not change ii!! | |
987 | */ | |
988 | if (has_comma) | |
989 | { | |
990 | *ii = '\0'; | |
991 | } | |
992 | ||
993 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
994 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ | |
995 | /* Look for ':', but ignore inside of <> */ | |
996 | ||
997 | p = *argptr; | |
998 | if (p[0] == '"') | |
999 | { | |
1000 | *is_quote_enclosed = 1; | |
1001 | (*argptr)++; | |
1002 | p++; | |
1003 | } | |
1004 | else | |
1005 | *is_quote_enclosed = 0; | |
1006 | for (; *p; p++) | |
1007 | { | |
1008 | if (p[0] == '<') | |
1009 | { | |
1010 | char *temp_end = find_template_name_end (p); | |
1011 | if (!temp_end) | |
1012 | error ("malformed template specification in command"); | |
1013 | p = temp_end; | |
1014 | } | |
1015 | /* Check for the end of the first half of the linespec. End of line, | |
1016 | a tab, a double colon or the last single colon, or a space. But | |
1017 | if enclosed in double quotes we do not break on enclosed spaces */ | |
1018 | if (!*p | |
1019 | || p[0] == '\t' | |
1020 | || ((p[0] == ':') | |
1021 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
1022 | || ((p[0] == ' ') && !*is_quote_enclosed)) | |
1023 | break; | |
1024 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ | |
1025 | { | |
1026 | /* Find the *last* '.', since the others are package qualifiers. */ | |
1027 | for (p1 = p; *p1; p1++) | |
1028 | { | |
1029 | if (*p1 == '.') | |
1030 | p = p1; | |
1031 | } | |
1032 | break; | |
1033 | } | |
1034 | } | |
1035 | while (p[0] == ' ' || p[0] == '\t') | |
1036 | p++; | |
1037 | ||
1038 | /* if the closing double quote was left at the end, remove it */ | |
1039 | if (*is_quote_enclosed) | |
1040 | { | |
1041 | char *closing_quote = strchr (p - 1, '"'); | |
1042 | if (closing_quote && closing_quote[1] == '\0') | |
1043 | *closing_quote = '\0'; | |
1044 | } | |
1045 | ||
1046 | /* Now that we've safely parsed the first half, | |
1047 | * put back ',' so outer layers can see it | |
1048 | */ | |
1049 | if (has_comma) | |
1050 | *ii = ','; | |
1051 | ||
1052 | return p; | |
1053 | } | |
1054 | ||
1055 | \f | |
1056 | ||
614b3b14 DC |
1057 | /* This handles C++ and Java compound data structures. P should point |
1058 | at the first component separator, i.e. double-colon or period. */ | |
1059 | ||
1060 | static struct symtabs_and_lines | |
1061 | decode_compound (char **argptr, int funfirstline, char ***canonical, | |
1062 | char *saved_arg, char *p) | |
1063 | { | |
1064 | struct symtabs_and_lines values; | |
1065 | char *p1, *p2; | |
1066 | #if 0 | |
1067 | char *q, *q1; | |
1068 | #endif | |
1069 | char *saved_arg2 = *argptr; | |
1070 | char *temp_end; | |
1071 | struct symbol *sym; | |
1072 | /* The symtab that SYM was found in. */ | |
1073 | struct symtab *sym_symtab; | |
1074 | char *copy; | |
1075 | struct symbol *sym_class; | |
1076 | int i1; | |
1077 | struct symbol **sym_arr; | |
1078 | struct type *t; | |
1079 | ||
1080 | /* First check for "global" namespace specification, | |
1081 | of the form "::foo". If found, skip over the colons | |
1082 | and jump to normal symbol processing */ | |
1083 | if (p[0] == ':' | |
1084 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
1085 | saved_arg2 += 2; | |
1086 | ||
1087 | /* We have what looks like a class or namespace | |
1088 | scope specification (A::B), possibly with many | |
1089 | levels of namespaces or classes (A::B::C::D). | |
1090 | ||
1091 | Some versions of the HP ANSI C++ compiler (as also possibly | |
1092 | other compilers) generate class/function/member names with | |
1093 | embedded double-colons if they are inside namespaces. To | |
1094 | handle this, we loop a few times, considering larger and | |
1095 | larger prefixes of the string as though they were single | |
1096 | symbols. So, if the initially supplied string is | |
1097 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
1098 | then "A::B::C", then "A::B::C::D", and finally | |
1099 | "A::B::C::D::foo" as single, monolithic symbols, because | |
1100 | A, B, C or D may be namespaces. | |
1101 | ||
1102 | Note that namespaces can nest only inside other | |
1103 | namespaces, and not inside classes. So we need only | |
1104 | consider *prefixes* of the string; there is no need to look up | |
1105 | "B::C" separately as a symbol in the previous example. */ | |
1106 | ||
1107 | p2 = p; /* save for restart */ | |
1108 | while (1) | |
1109 | { | |
1110 | /* Extract the class name. */ | |
1111 | p1 = p; | |
1112 | while (p != *argptr && p[-1] == ' ') | |
1113 | --p; | |
1114 | copy = (char *) alloca (p - *argptr + 1); | |
1115 | memcpy (copy, *argptr, p - *argptr); | |
1116 | copy[p - *argptr] = 0; | |
1117 | ||
1118 | /* Discard the class name from the arg. */ | |
1119 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
1120 | while (*p == ' ' || *p == '\t') | |
1121 | p++; | |
1122 | *argptr = p; | |
1123 | ||
1124 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
1125 | (struct symtab **) NULL); | |
1126 | ||
1127 | if (sym_class && | |
1128 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
1129 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
1130 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
1131 | { | |
1132 | /* Arg token is not digits => try it as a function name | |
1133 | Find the next token(everything up to end or next blank). */ | |
1134 | if (**argptr | |
1135 | && strchr (get_gdb_completer_quote_characters (), | |
1136 | **argptr) != NULL) | |
1137 | { | |
1138 | p = skip_quoted (*argptr); | |
1139 | *argptr = *argptr + 1; | |
1140 | } | |
1141 | else | |
1142 | { | |
1143 | p = *argptr; | |
1144 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
1145 | p++; | |
1146 | } | |
1147 | /* | |
1148 | q = operator_chars (*argptr, &q1); | |
1149 | if (q1 - q) | |
1150 | { | |
1151 | char *opname; | |
1152 | char *tmp = alloca (q1 - q + 1); | |
1153 | memcpy (tmp, q, q1 - q); | |
1154 | tmp[q1 - q] = '\0'; | |
1155 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
1156 | if (opname == NULL) | |
1157 | { | |
1158 | cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp); | |
1159 | } | |
1160 | copy = (char*) alloca (3 + strlen(opname)); | |
1161 | sprintf (copy, "__%s", opname); | |
1162 | p = q1; | |
1163 | } | |
1164 | else | |
1165 | */ | |
1166 | { | |
1167 | copy = (char *) alloca (p - *argptr + 1); | |
1168 | memcpy (copy, *argptr, p - *argptr); | |
1169 | copy[p - *argptr] = '\0'; | |
1170 | if (p != *argptr | |
1171 | && copy[p - *argptr - 1] | |
1172 | && strchr (get_gdb_completer_quote_characters (), | |
1173 | copy[p - *argptr - 1]) != NULL) | |
1174 | copy[p - *argptr - 1] = '\0'; | |
1175 | } | |
1176 | ||
1177 | /* no line number may be specified */ | |
1178 | while (*p == ' ' || *p == '\t') | |
1179 | p++; | |
1180 | *argptr = p; | |
1181 | ||
1182 | sym = 0; | |
1183 | i1 = 0; /* counter for the symbol array */ | |
1184 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) | |
1185 | * sizeof (struct symbol *)); | |
1186 | ||
1187 | if (destructor_name_p (copy, t)) | |
1188 | { | |
1189 | /* Destructors are a special case. */ | |
1190 | int m_index, f_index; | |
1191 | ||
1192 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
1193 | { | |
1194 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
1195 | ||
1196 | sym_arr[i1] = | |
1197 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
1198 | NULL, VAR_NAMESPACE, (int *) NULL, | |
1199 | (struct symtab **) NULL); | |
1200 | if (sym_arr[i1]) | |
1201 | i1++; | |
1202 | } | |
1203 | } | |
1204 | else | |
1205 | i1 = find_methods (t, copy, sym_arr); | |
1206 | if (i1 == 1) | |
1207 | { | |
1208 | /* There is exactly one field with that name. */ | |
1209 | sym = sym_arr[0]; | |
1210 | ||
1211 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1212 | { | |
1213 | values.sals = (struct symtab_and_line *) | |
1214 | xmalloc (sizeof (struct symtab_and_line)); | |
1215 | values.nelts = 1; | |
1216 | values.sals[0] = find_function_start_sal (sym, | |
1217 | funfirstline); | |
1218 | } | |
1219 | else | |
1220 | { | |
1221 | values.nelts = 0; | |
1222 | } | |
1223 | return values; | |
1224 | } | |
1225 | if (i1 > 0) | |
1226 | { | |
1227 | /* There is more than one field with that name | |
1228 | (overloaded). Ask the user which one to use. */ | |
1229 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
1230 | } | |
1231 | else | |
1232 | { | |
1233 | char *tmp; | |
1234 | ||
1235 | if (is_operator_name (copy)) | |
1236 | { | |
1237 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
1238 | strcpy (tmp, "operator "); | |
1239 | strcat (tmp, copy + 3); | |
1240 | } | |
1241 | else | |
1242 | tmp = copy; | |
1243 | if (tmp[0] == '~') | |
1244 | cplusplus_error (saved_arg, | |
1245 | "the class `%s' does not have destructor defined\n", | |
1246 | SYMBOL_SOURCE_NAME (sym_class)); | |
1247 | else | |
1248 | cplusplus_error (saved_arg, | |
1249 | "the class %s does not have any method named %s\n", | |
1250 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* Move pointer up to next possible class/namespace token */ | |
1255 | p = p2 + 1; /* restart with old value +1 */ | |
1256 | /* Move pointer ahead to next double-colon */ | |
1257 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) | |
1258 | { | |
1259 | if (p[0] == '<') | |
1260 | { | |
1261 | temp_end = find_template_name_end (p); | |
1262 | if (!temp_end) | |
1263 | error ("malformed template specification in command"); | |
1264 | p = temp_end; | |
1265 | } | |
1266 | else if ((p[0] == ':') && (p[1] == ':')) | |
1267 | break; /* found double-colon */ | |
1268 | else | |
1269 | p++; | |
1270 | } | |
1271 | ||
1272 | if (*p != ':') | |
1273 | break; /* out of the while (1) */ | |
1274 | ||
1275 | p2 = p; /* save restart for next time around */ | |
1276 | *argptr = saved_arg2; /* restore argptr */ | |
1277 | } /* while (1) */ | |
1278 | ||
1279 | /* Last chance attempt -- check entire name as a symbol */ | |
1280 | /* Use "copy" in preparation for jumping out of this block, | |
1281 | to be consistent with usage following the jump target */ | |
1282 | copy = (char *) alloca (p - saved_arg2 + 1); | |
1283 | memcpy (copy, saved_arg2, p - saved_arg2); | |
1284 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ | |
1285 | copy[p - saved_arg2] = '\000'; | |
1286 | /* Set argptr to skip over the name */ | |
1287 | *argptr = (*p == '\'') ? p + 1 : p; | |
1288 | /* Look up entire name */ | |
1289 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1290 | if (sym) | |
1291 | return symbol_found (funfirstline, canonical, copy, sym, | |
1292 | NULL, sym_symtab); | |
1293 | ||
1294 | /* Couldn't find any interpretation as classes/namespaces, so give up */ | |
1295 | /* The quotes are important if copy is empty. */ | |
1296 | cplusplus_error (saved_arg, | |
1297 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
1298 | copy); | |
1299 | } | |
1300 | ||
f3c39e76 DC |
1301 | \f |
1302 | ||
1303 | /* Return the symtab associated to the filename given by the substring | |
1304 | of *ARGPTR ending at P, and advance ARGPTR past that filename. */ | |
1305 | ||
1306 | static struct symtab * | |
1307 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed) | |
1308 | { | |
1309 | char *p1; | |
1310 | char *copy; | |
1311 | struct symtab *s; | |
1312 | ||
1313 | p1 = p; | |
1314 | while (p != *argptr && p[-1] == ' ') | |
1315 | --p; | |
1316 | if ((*p == '"') && is_quote_enclosed) | |
1317 | --p; | |
1318 | copy = (char *) alloca (p - *argptr + 1); | |
1319 | memcpy (copy, *argptr, p - *argptr); | |
1320 | /* It may have the ending quote right after the file name */ | |
1321 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') | |
1322 | copy[p - *argptr - 1] = 0; | |
1323 | else | |
1324 | copy[p - *argptr] = 0; | |
1325 | ||
1326 | /* Find that file's data. */ | |
1327 | s = lookup_symtab (copy); | |
1328 | if (s == 0) | |
1329 | { | |
1330 | if (!have_full_symbols () && !have_partial_symbols ()) | |
1331 | error ("No symbol table is loaded. Use the \"file\" command."); | |
1332 | error ("No source file named %s.", copy); | |
1333 | } | |
1334 | ||
1335 | /* Discard the file name from the arg. */ | |
1336 | p = p1 + 1; | |
1337 | while (*p == ' ' || *p == '\t') | |
1338 | p++; | |
1339 | *argptr = p; | |
1340 | ||
1341 | return s; | |
1342 | } | |
1343 | ||
1344 | ||
614b3b14 DC |
1345 | \f |
1346 | ||
413dad4d DC |
1347 | /* Now come some functions that are called from multiple places within |
1348 | decode_line_1. */ | |
1349 | ||
1350 | /* We've found a symbol SYM to associate with our linespec; build a | |
1351 | corresponding struct symtabs_and_lines. */ | |
1352 | ||
1353 | static struct symtabs_and_lines | |
1354 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
1355 | struct symbol *sym, struct symtab *s, | |
1356 | struct symtab *sym_symtab) | |
1357 | { | |
1358 | struct symtabs_and_lines values; | |
1359 | ||
1360 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1361 | { |
413dad4d | 1362 | /* Arg is the name of a function */ |
50641945 FN |
1363 | values.sals = (struct symtab_and_line *) |
1364 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1365 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1366 | values.nelts = 1; | |
1367 | ||
1368 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1369 | the line containing the parameters or thereabouts, not | |
1370 | the first line of code. */ | |
1371 | ||
1372 | /* We might need a canonical line spec if it is a static | |
1373 | function. */ | |
1374 | if (s == 0) | |
50641945 | 1375 | { |
413dad4d DC |
1376 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
1377 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1378 | if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL) | |
1379 | build_canonical_line_spec (values.sals, copy, canonical); | |
50641945 | 1380 | } |
50641945 FN |
1381 | return values; |
1382 | } | |
413dad4d DC |
1383 | else |
1384 | { | |
1385 | if (funfirstline) | |
1386 | error ("\"%s\" is not a function", copy); | |
1387 | else if (SYMBOL_LINE (sym) != 0) | |
1388 | { | |
1389 | /* We know its line number. */ | |
1390 | values.sals = (struct symtab_and_line *) | |
1391 | xmalloc (sizeof (struct symtab_and_line)); | |
1392 | values.nelts = 1; | |
1393 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1394 | values.sals[0].symtab = sym_symtab; | |
1395 | values.sals[0].line = SYMBOL_LINE (sym); | |
1396 | return values; | |
1397 | } | |
1398 | else | |
1399 | /* This can happen if it is compiled with a compiler which doesn't | |
1400 | put out line numbers for variables. */ | |
1401 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1402 | and return? For example, "info line foo" could print | |
1403 | the address. */ | |
1404 | error ("Line number not known for symbol \"%s\"", copy); | |
1405 | } | |
1406 | } | |
50641945 | 1407 | |
413dad4d DC |
1408 | /* We've found a minimal symbol MSYMBOL to associate with our |
1409 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1410 | |
413dad4d DC |
1411 | static struct symtabs_and_lines |
1412 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1413 | { | |
1414 | struct symtabs_and_lines values; | |
1415 | ||
1416 | values.sals = (struct symtab_and_line *) | |
1417 | xmalloc (sizeof (struct symtab_and_line)); | |
1418 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1419 | (struct sec *) 0, 0); | |
1420 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1421 | if (funfirstline) | |
1422 | { | |
1423 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1424 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1425 | } | |
1426 | values.nelts = 1; | |
1427 | return values; | |
50641945 | 1428 | } |