1 /* Parser for linespec for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
5 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
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
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
31 #include "completer.h"
33 #include "cp-support.h"
34 #include "parser-defs.h"
36 #include "objc-lang.h"
38 #include "exceptions.h"
41 #include "mi/mi-cmds.h"
43 #include "arch-utils.h"
45 #include "cli/cli-utils.h"
47 /* We share this one with symtab.c, but it is not exported widely. */
49 extern char *operator_chars (char *, char **);
51 /* Prototypes for local functions. */
53 static void initialize_defaults (struct symtab **default_symtab,
56 static struct symtabs_and_lines decode_indirect (char **argptr);
58 static char *locate_first_half (char **argptr, int *is_quote_enclosed);
60 static struct symtabs_and_lines decode_objc (char **argptr,
62 struct symtab *file_symtab,
63 struct linespec_result *canonical,
66 static struct symtabs_and_lines decode_compound (char **argptr,
68 struct linespec_result *canonical,
69 struct symtab *file_symtab,
73 static struct symbol *lookup_prefix_sym (char **argptr, char *p,
76 static struct symtabs_and_lines find_method (int funfirstline,
77 struct linespec_result *canonical,
81 struct symbol *sym_class,
84 static void cplusplus_error (const char *name, const char *fmt, ...)
85 ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3);
87 static int total_number_of_methods (struct type *type);
89 static int find_methods (struct type *, char *,
90 enum language, struct symbol **, struct symtab *);
92 static int add_matching_methods (int method_counter, struct type *t,
93 enum language language,
94 struct symbol **sym_arr);
96 static int add_constructors (int method_counter, struct type *t,
97 enum language language,
98 struct symbol **sym_arr);
100 static void build_canonical_line_spec (struct symtab_and_line *,
101 char *, struct linespec_result *);
103 static char *find_toplevel_char (char *s, char c);
105 static int is_objc_method_format (const char *s);
107 static struct symtabs_and_lines decode_line_2 (struct symbol *[],
109 struct linespec_result *);
111 static struct symtab *symtab_from_filename (char **argptr,
112 char *p, int is_quote_enclosed);
114 static struct symbol *find_function_symbol (char **argptr, char *p,
115 int is_quote_enclosed);
118 symtabs_and_lines decode_all_digits (char **argptr,
119 struct symtab *default_symtab,
121 struct linespec_result *canonical,
122 struct symtab *file_symtab,
125 static struct symtabs_and_lines decode_dollar (char *copy,
127 struct symtab *default_symtab,
128 struct linespec_result *canonical,
129 struct symtab *file_symtab);
131 static int decode_label (struct symbol *function_symbol,
132 char *copy, struct linespec_result *canonical,
133 struct symtabs_and_lines *result);
135 static struct symtabs_and_lines decode_variable (char *copy,
137 struct linespec_result *canonical,
138 struct symtab *file_symtab);
141 symtabs_and_lines symbol_found (int funfirstline,
142 struct linespec_result *canonical,
145 struct symtab *file_symtab,
146 struct symbol *function_symbol);
149 symtabs_and_lines minsym_found (int funfirstline,
150 struct minimal_symbol *msymbol);
152 /* Helper functions. */
154 /* Issue a helpful hint on using the command completion feature on
155 single quoted demangled C++ symbols as part of the completion
159 cplusplus_error (const char *name, const char *fmt, ...)
161 struct ui_file *tmp_stream;
164 tmp_stream = mem_fileopen ();
165 make_cleanup_ui_file_delete (tmp_stream);
170 va_start (args, fmt);
171 vfprintf_unfiltered (tmp_stream, fmt, args);
175 while (*name == '\'')
177 fprintf_unfiltered (tmp_stream,
178 ("Hint: try '%s<TAB> or '%s<ESC-?>\n"
179 "(Note leading single quote.)"),
182 message = ui_file_xstrdup (tmp_stream, NULL);
183 make_cleanup (xfree, message);
184 throw_error (NOT_FOUND_ERROR, "%s", message);
187 /* Return the number of methods described for TYPE, including the
188 methods from types it derives from. This can't be done in the symbol
189 reader because the type of the baseclass might still be stubbed
190 when the definition of the derived class is parsed. */
193 total_number_of_methods (struct type *type)
198 CHECK_TYPEDEF (type);
199 if (! HAVE_CPLUS_STRUCT (type))
201 count = TYPE_NFN_FIELDS_TOTAL (type);
203 for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
204 count += total_number_of_methods (TYPE_BASECLASS (type, n));
209 /* Returns the block to be used for symbol searches for the given SYMTAB,
210 which may be NULL. */
212 static struct block *
213 get_search_block (struct symtab *symtab)
218 block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK);
221 enum language save_language;
223 /* get_selected_block can change the current language when there is
224 no selected frame yet. */
225 save_language = current_language->la_language;
226 block = get_selected_block (0);
227 set_language (save_language);
233 /* Recursive helper function for decode_line_1.
234 Look for methods named NAME in type T.
235 Return number of matches.
236 Put matches in SYM_ARR, which should have been allocated with
237 a size of total_number_of_methods (T) * sizeof (struct symbol *).
238 Note that this function is g++ specific. */
241 find_methods (struct type *t, char *name, enum language language,
242 struct symbol **sym_arr, struct symtab *file_symtab)
246 char *class_name = type_name_no_tag (t);
247 struct cleanup *cleanup;
250 /* NAME is typed by the user: it needs to be canonicalized before
251 passing to lookup_symbol. */
252 canon = cp_canonicalize_string (name);
256 cleanup = make_cleanup (xfree, name);
259 cleanup = make_cleanup (null_cleanup, NULL);
261 /* Ignore this class if it doesn't have a name. This is ugly, but
262 unless we figure out how to get the physname without the name of
263 the class, then the loop can't do any good. */
265 && (lookup_symbol_in_language (class_name, get_search_block (file_symtab),
266 STRUCT_DOMAIN, language, (int *) NULL)))
269 int name_len = strlen (name);
273 /* Loop over each method name. At this level, all overloads of a name
274 are counted as a single name. There is an inner loop which loops over
277 for (method_counter = TYPE_NFN_FIELDS (t) - 1;
281 char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
284 if (strncmp (method_name, "__", 2) == 0 ||
285 strncmp (method_name, "op", 2) == 0 ||
286 strncmp (method_name, "type", 4) == 0)
288 if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI))
289 method_name = dem_opname;
290 else if (cplus_demangle_opname (method_name, dem_opname, 0))
291 method_name = dem_opname;
294 if (strcmp_iw (name, method_name) == 0)
295 /* Find all the overloaded methods with that name. */
296 i1 += add_matching_methods (method_counter, t, language,
298 else if (strncmp (class_name, name, name_len) == 0
299 && (class_name[name_len] == '\0'
300 || class_name[name_len] == '<'))
301 i1 += add_constructors (method_counter, t, language,
306 /* Only search baseclasses if there is no match yet, since names in
307 derived classes override those in baseclasses.
309 FIXME: The above is not true; it is only true of member functions
310 if they have the same number of arguments (??? - section 13.1 of the
311 ARM says the function members are not in the same scope but doesn't
312 really spell out the rules in a way I understand. In any case, if
313 the number of arguments differ this is a case in which we can overload
314 rather than hiding without any problem, and gcc 2.4.5 does overload
315 rather than hiding in this case). */
318 for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
319 i1 += find_methods (TYPE_BASECLASS (t, ibase), name,
320 language, sym_arr + i1, file_symtab);
322 do_cleanups (cleanup);
326 /* Add the symbols associated to methods of the class whose type is T
327 and whose name matches the method indexed by METHOD_COUNTER in the
328 array SYM_ARR. Return the number of methods added. */
331 add_matching_methods (int method_counter, struct type *t,
332 enum language language, struct symbol **sym_arr)
337 for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
342 const char *phys_name;
344 f = TYPE_FN_FIELDLIST1 (t, method_counter);
346 if (TYPE_FN_FIELD_STUB (f, field_counter))
348 char *tmp_name, *tmp2;
350 tmp_name = gdb_mangle_name (t,
353 tmp2 = alloca (strlen (tmp_name) + 1);
354 strcpy (tmp2, tmp_name);
359 phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
361 sym_arr[i1] = lookup_symbol_in_language (phys_name,
369 /* This error message gets printed, but the method
370 still seems to be found.
371 fputs_filtered("(Cannot find method ", gdb_stdout);
372 fprintf_symbol_filtered (gdb_stdout, phys_name,
374 DMGL_PARAMS | DMGL_ANSI);
375 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
383 /* Add the symbols associated to constructors of the class whose type
384 is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the
385 array SYM_ARR. Return the number of methods added. */
388 add_constructors (int method_counter, struct type *t,
389 enum language language, struct symbol **sym_arr)
394 /* For GCC 3.x and stabs, constructors and destructors
395 have names like __base_ctor and __complete_dtor.
396 Check the physname for now if we're looking for a
399 = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
404 const char *phys_name;
406 f = TYPE_FN_FIELDLIST1 (t, method_counter);
408 /* GCC 3.x will never produce stabs stub methods, so
409 we don't need to handle this case. */
410 if (TYPE_FN_FIELD_STUB (f, field_counter))
412 phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
413 if (! is_constructor_name (phys_name))
416 /* If this method is actually defined, include it in the
418 sym_arr[i1] = lookup_symbol_in_language (phys_name,
429 /* Helper function for decode_line_1.
430 Build a canonical line spec in CANONICAL if it is non-NULL and if
431 the SAL has a symtab.
432 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
433 If SYMNAME is NULL the line number from SAL is used and the canonical
434 line spec is `filename:linenum'. */
437 build_canonical_line_spec (struct symtab_and_line *sal, char *symname,
438 struct linespec_result *canonical)
440 char **canonical_arr;
441 char *canonical_name;
443 struct symtab *s = sal->symtab;
445 if (s == (struct symtab *) NULL
446 || s->filename == (char *) NULL
447 || canonical == NULL)
450 canonical_arr = (char **) xmalloc (sizeof (char *));
451 canonical->canonical = canonical_arr;
453 filename = s->filename;
456 canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2);
457 sprintf (canonical_name, "%s:%s", filename, symname);
461 canonical_name = xmalloc (strlen (filename) + 30);
462 sprintf (canonical_name, "%s:%d", filename, sal->line);
464 canonical_arr[0] = canonical_name;
469 /* Find an instance of the character C in the string S that is outside
470 of all parenthesis pairs, single-quoted strings, and double-quoted
471 strings. Also, ignore the char within a template name, like a ','
472 within foo<int, int>. */
475 find_toplevel_char (char *s, char c)
477 int quoted = 0; /* zero if we're not in quotes;
478 '"' if we're in a double-quoted string;
479 '\'' if we're in a single-quoted string. */
480 int depth = 0; /* Number of unclosed parens we've seen. */
483 for (scan = s; *scan; scan++)
489 else if (*scan == '\\' && *(scan + 1))
492 else if (*scan == c && ! quoted && depth == 0)
494 else if (*scan == '"' || *scan == '\'')
496 else if (*scan == '(' || *scan == '<')
498 else if ((*scan == ')' || *scan == '>') && depth > 0)
505 /* Determines if the gives string corresponds to an Objective-C method
506 representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols
507 are allowed to have spaces and parentheses in them. */
510 is_objc_method_format (const char *s)
512 if (s == NULL || *s == '\0')
514 /* Handle arguments with the format FILENAME:SYMBOL. */
515 if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL)
516 && (s[2] == '[') && strchr(s, ']'))
518 /* Handle arguments that are just SYMBOL. */
519 else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']'))
524 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
525 operate on (ask user if necessary).
526 If CANONICAL is non-NULL return a corresponding array of mangled names
527 as canonical line specs there. */
529 static struct symtabs_and_lines
530 decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline,
531 struct linespec_result *canonical)
533 struct symtabs_and_lines values, return_values;
538 struct cleanup *old_chain;
539 char **canonical_arr = (char **) NULL;
540 const char *select_mode = multiple_symbols_select_mode ();
542 if (select_mode == multiple_symbols_cancel)
543 error (_("canceled because the command is ambiguous\n"
544 "See set/show multiple-symbol."));
546 values.sals = (struct symtab_and_line *)
547 alloca (nelts * sizeof (struct symtab_and_line));
548 return_values.sals = (struct symtab_and_line *)
549 xmalloc (nelts * sizeof (struct symtab_and_line));
550 old_chain = make_cleanup (xfree, return_values.sals);
554 canonical_arr = (char **) xmalloc (nelts * sizeof (char *));
555 make_cleanup (xfree, canonical_arr);
556 memset (canonical_arr, 0, nelts * sizeof (char *));
557 canonical->canonical = canonical_arr;
563 init_sal (&return_values.sals[i]); /* Initialize to zeroes. */
564 init_sal (&values.sals[i]);
565 if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
566 values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline);
570 /* If select_mode is "all", then do not print the multiple-choice
571 menu and act as if the user had chosen choice "1" (all). */
572 if (select_mode == multiple_symbols_all
573 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
578 printf_unfiltered (_("[0] cancel\n[1] all\n"));
581 if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
583 if (values.sals[i].symtab)
584 printf_unfiltered ("[%d] %s at %s:%d\n",
586 SYMBOL_PRINT_NAME (sym_arr[i]),
587 values.sals[i].symtab->filename,
588 values.sals[i].line);
590 printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? "
591 "Probably broken debug info...]\n"),
593 SYMBOL_PRINT_NAME (sym_arr[i]),
594 values.sals[i].line);
598 printf_unfiltered (_("?HERE\n"));
602 prompt = getenv ("PS2");
607 args = command_line_input (prompt, 0, "overload-choice");
610 if (args == 0 || *args == 0)
611 error_no_arg (_("one or more choice numbers"));
619 while (*arg1 >= '0' && *arg1 <= '9')
621 if (*arg1 && *arg1 != ' ' && *arg1 != '\t')
622 error (_("Arguments must be choice numbers."));
627 error (_("canceled"));
632 for (i = 0; i < nelts; i++)
634 if (canonical_arr[i] == NULL)
636 symname = SYMBOL_LINKAGE_NAME (sym_arr[i]);
637 canonical_arr[i] = xstrdup (symname);
641 memcpy (return_values.sals, values.sals,
642 (nelts * sizeof (struct symtab_and_line)));
643 return_values.nelts = nelts;
644 discard_cleanups (old_chain);
645 return return_values;
648 if (num >= nelts + 2)
650 printf_unfiltered (_("No choice number %d.\n"), num);
655 if (values.sals[num].pc)
659 symname = SYMBOL_LINKAGE_NAME (sym_arr[num]);
660 make_cleanup (xfree, symname);
661 canonical_arr[i] = xstrdup (symname);
663 return_values.sals[i++] = values.sals[num];
664 values.sals[num].pc = 0;
668 printf_unfiltered (_("duplicate request for %d ignored.\n"),
674 while (*args == ' ' || *args == '\t')
677 return_values.nelts = i;
678 discard_cleanups (old_chain);
679 return return_values;
682 /* A helper function for decode_line_1 and friends which skips P
683 past any method overload information at the beginning of P, e.g.,
684 "(const struct foo *)".
686 This function assumes that P has already been validated to contain
687 overload information, and it will assert if *P != '('. */
689 find_method_overload_end (char *p)
693 gdb_assert (*p == '(');
713 /* Does P point to a sequence of characters which implies the end
714 of a name? Terminals include "if" and "thread" clauses. */
721 if (*p == 'i' && p[1] == 'f'
722 && (isspace (p[2]) || p[2] == '\0' || p[2] == '('))
725 if (strncmp (p, "thread", 6) == 0
726 && (isspace (p[6]) || p[6] == '\0'))
732 /* Keep important information used when looking up a name. This includes
733 template parameters, overload information, and important keywords. */
736 keep_name_info (char *ptr)
741 /* Keep any template parameters. */
743 return remove_trailing_whitespace (start, ptr);
747 ptr = p = find_template_name_end (ptr);
750 return remove_trailing_whitespace (start, ptr);
752 /* Keep method overload information. */
754 ptr = p = find_method_overload_end (p);
757 return remove_trailing_whitespace (start, ptr);
759 /* Keep important keywords. */
762 char *quotes = get_gdb_completer_quote_characters ();
764 if (strncmp (p, "const", 5) == 0
765 && (isspace (p[5]) || p[5] == '\0'
766 || strchr (quotes, p[5]) != NULL))
768 else if (strncmp (p, "volatile", 8) == 0
769 && (isspace (p[8]) || p[8] == '\0'
770 || strchr (quotes, p[8]) != NULL))
776 return remove_trailing_whitespace (start, ptr);
780 /* The parser of linespec itself. */
782 /* Parse a string that specifies a line number.
783 Pass the address of a char * variable; that variable will be
784 advanced over the characters actually parsed.
788 LINENUM -- that line number in current file. PC returned is 0.
789 FILE:LINENUM -- that line in that file. PC returned is 0.
790 FUNCTION -- line number of openbrace of that function.
791 PC returned is the start of the function.
792 LABEL -- a label in the current scope
793 VARIABLE -- line number of definition of that variable.
795 FILE:FUNCTION -- likewise, but prefer functions in that file.
796 *EXPR -- line in which address EXPR appears.
798 This may all be followed by an "if EXPR", which we ignore.
800 FUNCTION may be an undebuggable function found in minimal symbol table.
802 If the argument FUNFIRSTLINE is nonzero, we want the first line
803 of real code inside a function when a function is specified, and it is
804 not OK to specify a variable or type to get its line number.
806 DEFAULT_SYMTAB specifies the file to use if none is specified.
807 It defaults to current_source_symtab.
808 DEFAULT_LINE specifies the line number to use for relative
809 line numbers (that start with signs). Defaults to current_source_line.
810 If CANONICAL is non-NULL, store an array of strings containing the canonical
811 line specs there if necessary. Currently overloaded member functions and
812 line numbers or static functions without a filename yield a canonical
813 line spec. The array and the line spec strings are allocated on the heap,
814 it is the callers responsibility to free them.
816 Note that it is possible to return zero for the symtab
817 if no file is validly specified. Callers must check that.
818 Also, the line number returned may be invalid. */
820 /* We allow single quotes in various places. This is a hideous
821 kludge, which exists because the completer can't yet deal with the
822 lack of single quotes. FIXME: write a linespec_completer which we
823 can use as appropriate instead of make_symbol_completion_list. */
825 struct symtabs_and_lines
826 decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
827 int default_line, struct linespec_result *canonical)
831 /* If a file name is specified, this is its symtab. */
832 struct symtab *file_symtab = NULL;
835 /* This says whether or not something in *ARGPTR is quoted with
836 completer_quotes (i.e. with single quotes). */
838 /* Is *ARGPTR is enclosed in double quotes? */
839 int is_quote_enclosed;
840 int is_objc_method = 0;
841 char *saved_arg = *argptr;
842 /* If IS_QUOTED, the end of the quoted bit. */
843 char *end_quote = NULL;
844 /* Is *ARGPTR enclosed in single quotes? */
845 int is_squote_enclosed = 0;
846 /* The "first half" of the linespec. */
849 /* If we are parsing `function:label', this holds the symbol for the
851 struct symbol *function_symbol = NULL;
852 /* If FUNCTION_SYMBOL is not NULL, then this is the exception that
853 was thrown when trying to parse a filename. */
854 volatile struct gdb_exception file_exception;
856 /* Defaults have defaults. */
858 initialize_defaults (&default_symtab, &default_line);
860 /* See if arg is *PC. */
863 return decode_indirect (argptr);
865 is_quoted = (strchr (get_gdb_completer_quote_characters (),
870 end_quote = skip_quoted (*argptr);
871 if (*end_quote == '\0')
872 is_squote_enclosed = 1;
875 /* Check to see if it's a multipart linespec (with colons or
878 /* Locate the end of the first half of the linespec.
879 After the call, for instance, if the argptr string is "foo.c:123"
880 p will point at "123". If there is only one part, like "foo", p
881 will point to "". If this is a C++ name, like "A::B::foo", p will
882 point to "::B::foo". Argptr is not changed by this call. */
884 first_half = p = locate_first_half (argptr, &is_quote_enclosed);
886 /* First things first: if ARGPTR starts with a filename, get its
887 symtab and strip the filename from ARGPTR. */
888 TRY_CATCH (file_exception, RETURN_MASK_ERROR)
890 file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed);
893 if (file_exception.reason >= 0)
895 /* Check for single quotes on the non-filename part. */
896 is_quoted = (**argptr
897 && strchr (get_gdb_completer_quote_characters (),
900 end_quote = skip_quoted (*argptr);
902 /* Locate the next "half" of the linespec. */
903 first_half = p = locate_first_half (argptr, &is_quote_enclosed);
906 /* Check if this is an Objective-C method (anything that starts with
907 a '+' or '-' and a '['). */
908 if (is_objc_method_format (p))
911 /* Check if the symbol could be an Objective-C selector. */
914 struct symtabs_and_lines values;
916 values = decode_objc (argptr, funfirstline, file_symtab,
917 canonical, saved_arg);
918 if (values.sals != NULL)
922 /* Does it look like there actually were two parts? */
924 if (p[0] == ':' || p[0] == '.')
926 /* Is it a C++ or Java compound data structure?
927 The check on p[1] == ':' is capturing the case of "::",
928 since p[0]==':' was checked above.
929 Note that the call to decode_compound does everything
930 for us, including the lookup on the symbol table, so we
933 if (p[0] == '.' || p[1] == ':')
935 struct symtabs_and_lines values;
936 volatile struct gdb_exception ex;
937 char *saved_argptr = *argptr;
939 if (is_quote_enclosed)
942 TRY_CATCH (ex, RETURN_MASK_ERROR)
944 values = decode_compound (argptr, funfirstline, canonical,
945 file_symtab, saved_arg, p);
947 if ((is_quoted || is_squote_enclosed) && **argptr == '\'')
948 *argptr = *argptr + 1;
953 if (ex.error != NOT_FOUND_ERROR)
954 throw_exception (ex);
956 *argptr = saved_argptr;
960 /* If there was an exception looking up a specified filename earlier,
961 then check whether we were really given `function:label'. */
962 if (file_exception.reason < 0)
964 function_symbol = find_function_symbol (argptr, p,
966 /* If we did not find a function, re-throw the original
968 if (!function_symbol)
969 throw_exception (file_exception);
972 /* Check for single quotes on the non-filename part. */
975 is_quoted = (**argptr
976 && strchr (get_gdb_completer_quote_characters (),
979 end_quote = skip_quoted (*argptr);
984 /* file_symtab is specified file's symtab, or 0 if no file specified.
985 If we are parsing `function:symbol', then FUNCTION_SYMBOL is the
986 function before the `:'.
987 arg no longer contains the file name. */
989 /* If the filename was quoted, we must re-check the quotation. */
991 if (end_quote == first_half && *end_quote!= '\0')
993 is_quoted = (**argptr
994 && strchr (get_gdb_completer_quote_characters (),
997 end_quote = skip_quoted (*argptr);
1000 /* Check whether arg is all digits (and sign). */
1003 if (*q == '-' || *q == '+')
1005 while (*q >= '0' && *q <= '9')
1008 if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')
1009 && function_symbol == NULL)
1010 /* We found a token consisting of all digits -- at least one digit. */
1011 return decode_all_digits (argptr, default_symtab, default_line,
1012 canonical, file_symtab, q);
1014 /* Arg token is not digits => try it as a variable name
1015 Find the next token (everything up to end or next whitespace). */
1017 if (**argptr == '$') /* May be a convenience variable. */
1018 /* One or two $ chars possible. */
1019 p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1));
1020 else if (is_quoted || is_squote_enclosed)
1024 error (_("Unmatched single quote."));
1026 else if (is_objc_method)
1028 /* allow word separators in method names for Obj-C. */
1029 p = skip_quoted_chars (*argptr, NULL, "");
1033 p = skip_quoted (*argptr);
1036 /* Keep any important naming information. */
1037 p = keep_name_info (p);
1039 copy = (char *) alloca (p - *argptr + 1);
1040 memcpy (copy, *argptr, p - *argptr);
1041 copy[p - *argptr] = '\0';
1044 && copy[0] == copy[p - *argptr - 1]
1045 && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL)
1047 copy[p - *argptr - 1] = '\0';
1050 else if (is_quoted || is_squote_enclosed)
1051 copy[p - *argptr - 1] = '\0';
1052 while (*p == ' ' || *p == '\t')
1056 /* If it starts with $: may be a legitimate variable or routine name
1057 (e.g. HP-UX millicode routines such as $$dyncall), or it may
1058 be history value, or it may be a convenience variable. */
1060 if (*copy == '$' && function_symbol == NULL)
1061 return decode_dollar (copy, funfirstline, default_symtab,
1062 canonical, file_symtab);
1064 /* Try the token as a label, but only if no file was specified,
1065 because we can only really find labels in the current scope. */
1069 struct symtabs_and_lines label_result;
1070 if (decode_label (function_symbol, copy, canonical, &label_result))
1071 return label_result;
1074 if (function_symbol)
1075 throw_exception (file_exception);
1077 /* Look up that token as a variable.
1078 If file specified, use that file's per-file block to start with. */
1080 return decode_variable (copy, funfirstline, canonical, file_symtab);
1085 /* Now, more helper functions for decode_line_1. Some conventions
1086 that these functions follow:
1088 Decode_line_1 typically passes along some of its arguments or local
1089 variables to the subfunctions. It passes the variables by
1090 reference if they are modified by the subfunction, and by value
1093 Some of the functions have side effects that don't arise from
1094 variables that are passed by reference. In particular, if a
1095 function is passed ARGPTR as an argument, it modifies what ARGPTR
1096 points to; typically, it advances *ARGPTR past whatever substring
1097 it has just looked at. (If it doesn't modify *ARGPTR, then the
1098 function gets passed *ARGPTR instead, which is then called ARG.)
1099 Also, functions that return a struct symtabs_and_lines may modify
1100 CANONICAL, as in the description of decode_line_1.
1102 If a function returns a struct symtabs_and_lines, then that struct
1103 will immediately make its way up the call chain to be returned by
1104 decode_line_1. In particular, all of the functions decode_XXX
1105 calculate the appropriate struct symtabs_and_lines, under the
1106 assumption that their argument is of the form XXX. */
1108 /* First, some functions to initialize stuff at the beggining of the
1112 initialize_defaults (struct symtab **default_symtab, int *default_line)
1114 if (*default_symtab == 0)
1116 /* Use whatever we have for the default source line. We don't use
1117 get_current_or_default_symtab_and_line as it can recurse and call
1119 struct symtab_and_line cursal =
1120 get_current_source_symtab_and_line ();
1122 *default_symtab = cursal.symtab;
1123 *default_line = cursal.line;
1129 /* Decode arg of the form *PC. */
1131 static struct symtabs_and_lines
1132 decode_indirect (char **argptr)
1134 struct symtabs_and_lines values;
1138 pc = value_as_address (parse_to_comma_and_eval (argptr));
1140 values.sals = (struct symtab_and_line *)
1141 xmalloc (sizeof (struct symtab_and_line));
1144 values.sals[0] = find_pc_line (pc, 0);
1145 values.sals[0].pc = pc;
1146 values.sals[0].section = find_pc_overlay (pc);
1147 values.sals[0].explicit_pc = 1;
1154 /* Locate the first half of the linespec, ending in a colon, period,
1155 or whitespace. (More or less.) Also, check to see if *ARGPTR is
1156 enclosed in double quotes; if so, set is_quote_enclosed, advance
1157 ARGPTR past that and zero out the trailing double quote.
1158 If ARGPTR is just a simple name like "main", p will point to ""
1162 locate_first_half (char **argptr, int *is_quote_enclosed)
1168 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
1169 and we must isolate the first half. Outer layers will call again later
1170 for the second half.
1172 Don't count commas that appear in argument lists of overloaded
1173 functions, or in quoted strings. It's stupid to go to this much
1174 trouble when the rest of the function is such an obvious roach hotel. */
1175 ii = find_toplevel_char (*argptr, ',');
1176 has_comma = (ii != 0);
1178 /* Temporarily zap out second half to not confuse the code below.
1179 This is undone below. Do not change ii!! */
1185 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be
1186 CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore
1192 *is_quote_enclosed = 1;
1198 *is_quote_enclosed = 0;
1199 if (strchr (get_gdb_completer_quote_characters (), *p))
1209 char *temp_end = find_template_name_end (p);
1212 error (_("malformed template specification in command"));
1217 p = find_method_overload_end (p);
1219 /* Check for a colon and a plus or minus and a [ (which
1220 indicates an Objective-C method). */
1221 if (is_objc_method_format (p))
1225 /* Check for the end of the first half of the linespec. End of
1226 line, a tab, a colon or a space. But if enclosed in double
1227 quotes we do not break on enclosed spaces. */
1231 || ((p[0] == ' ') && !*is_quote_enclosed))
1233 if (p[0] == '.' && strchr (p, ':') == NULL)
1235 /* Java qualified method. Find the *last* '.', since the
1236 others are package qualifiers. Stop at any open parenthesis
1237 which might provide overload information. */
1238 for (p1 = p; *p1 && *p1 != '('; p1++)
1246 while (p[0] == ' ' || p[0] == '\t')
1249 /* If the closing double quote was left at the end, remove it. */
1250 if (*is_quote_enclosed)
1252 char *closing_quote = strchr (p - 1, '"');
1254 if (closing_quote && closing_quote[1] == '\0')
1255 *closing_quote = '\0';
1258 /* Now that we've safely parsed the first half, put back ',' so
1259 outer layers can see it. */
1268 /* Here's where we recognise an Objective-C Selector. An Objective C
1269 selector may be implemented by more than one class, therefore it
1270 may represent more than one method/function. This gives us a
1271 situation somewhat analogous to C++ overloading. If there's more
1272 than one method that could represent the selector, then use some of
1273 the existing C++ code to let the user choose one. */
1275 struct symtabs_and_lines
1276 decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab,
1277 struct linespec_result *canonical, char *saved_arg)
1279 struct symtabs_and_lines values;
1280 struct symbol **sym_arr = NULL;
1281 struct symbol *sym = NULL;
1282 struct block *block = NULL;
1289 find_imps (file_symtab, get_search_block (file_symtab), *argptr,
1294 sym_arr = (struct symbol **)
1295 alloca ((i1 + 1) * sizeof (struct symbol *));
1298 *argptr = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2);
1301 /* i1 now represents the TOTAL number of matches found.
1302 i2 represents how many HIGH-LEVEL (struct symbol) matches,
1303 which will come first in the sym_arr array. Any low-level
1304 (minimal_symbol) matches will follow those. */
1310 /* Already a struct symbol. */
1315 sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0]));
1316 if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]),
1317 SYMBOL_LINKAGE_NAME (sym)) != 0)
1319 warning (_("debugging symbol \"%s\" does "
1320 "not match selector; ignoring"),
1321 SYMBOL_LINKAGE_NAME (sym));
1326 values.sals = (struct symtab_and_line *)
1327 xmalloc (sizeof (struct symtab_and_line));
1330 if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
1332 /* Canonicalize this, so it remains resolved for dylib loads. */
1333 values.sals[0] = find_function_start_sal (sym, funfirstline);
1334 build_canonical_line_spec (values.sals,
1335 SYMBOL_NATURAL_NAME (sym), canonical);
1339 /* The only match was a non-debuggable symbol, which might point
1340 to a function descriptor; resolve it to the actual code address
1342 struct minimal_symbol *msymbol = (struct minimal_symbol *)sym_arr[0];
1343 struct objfile *objfile = msymbol_objfile (msymbol);
1344 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1345 CORE_ADDR pc = SYMBOL_VALUE_ADDRESS (msymbol);
1347 pc = gdbarch_convert_from_func_ptr_addr (gdbarch, pc,
1350 init_sal (&values.sals[0]);
1351 values.sals[0].pc = pc;
1358 /* More than one match. The user must choose one or more. */
1359 return decode_line_2 (sym_arr, i2, funfirstline, canonical);
1365 /* This handles C++ and Java compound data structures. P should point
1366 at the first component separator, i.e. double-colon or period. As
1367 an example, on entrance to this function we could have ARGPTR
1368 pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */
1370 static struct symtabs_and_lines
1371 decode_compound (char **argptr, int funfirstline,
1372 struct linespec_result *canonical, struct symtab *file_symtab,
1373 char *the_real_saved_arg, char *p)
1375 struct symtabs_and_lines values;
1377 char *saved_arg2 = *argptr;
1381 struct symbol *sym_class;
1383 char *saved_java_argptr = NULL;
1386 /* If the user specified any completer quote characters in the input,
1387 strip them. They are superfluous. */
1388 saved_arg = alloca (strlen (the_real_saved_arg) + 1);
1390 char *dst = saved_arg;
1391 char *src = the_real_saved_arg;
1392 char *quotes = get_gdb_completer_quote_characters ();
1393 while (*src != '\0')
1395 if (strchr (quotes, *src) == NULL)
1402 /* First check for "global" namespace specification, of the form
1403 "::foo". If found, skip over the colons and jump to normal
1404 symbol processing. I.e. the whole line specification starts with
1405 "::" (note the condition that *argptr == p). */
1407 && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t')))
1410 /* Given our example "AAA::inA::fun", we have two cases to consider:
1412 1) AAA::inA is the name of a class. In that case, presumably it
1413 has a method called "fun"; we then look up that method using
1416 2) AAA::inA isn't the name of a class. In that case, either the
1417 user made a typo, AAA::inA is the name of a namespace, or it is
1418 the name of a minimal symbol.
1419 We just look up AAA::inA::fun with lookup_symbol. If that fails,
1420 try lookup_minimal_symbol.
1422 Thus, our first task is to find everything before the last set of
1423 double-colons and figure out if it's the name of a class. So we
1424 first loop through all of the double-colons. */
1426 p2 = p; /* Save for restart. */
1428 /* This is very messy. Following the example above we have now the
1431 argptr -> "AAA::inA::fun
1432 saved_arg -> "AAA::inA::fun
1433 saved_arg2 -> "AAA::inA::fun
1434 p2 -> "::inA::fun". */
1436 /* In the loop below, with these strings, we'll make 2 passes, each
1437 is marked in comments. */
1441 static char *break_characters = " \t(";
1443 /* Move pointer up to next possible class/namespace token. */
1445 p = p2 + 1; /* Restart with old value +1. */
1447 /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun",
1448 i.e. if there is a double-colon, p will now point to the
1450 /* PASS2: p2->"::fun", p->":fun" */
1452 /* Move pointer ahead to next double-colon. */
1454 && strchr (break_characters, *p) == NULL
1455 && strchr (get_gdb_completer_quote_characters (), *p) == NULL)
1457 if (current_language->la_language == language_cplus)
1458 p += cp_validate_operator (p);
1462 temp_end = find_template_name_end (p);
1464 error (_("malformed template specification in command"));
1467 /* Note that, since, at the start of this loop, p would be
1468 pointing to the second colon in a double-colon, we only
1469 satisfy the condition below if there is another
1470 double-colon to the right (after). I.e. there is another
1471 component that can be a class or a namespace. I.e, if at
1472 the beginning of this loop (PASS1), we had
1473 p->":inA::fun", we'll trigger this when p has been
1474 advanced to point to "::fun". */
1475 /* PASS2: we will not trigger this. */
1476 else if ((p[0] == ':') && (p[1] == ':'))
1477 break; /* Found double-colon. */
1480 /* PASS2: We'll keep getting here, until P points to one of the
1481 break characters, at which point we exit this loop. */
1485 && strncmp (&p[1], CP_ANONYMOUS_NAMESPACE_STR,
1486 CP_ANONYMOUS_NAMESPACE_LEN) == 0)
1487 p += CP_ANONYMOUS_NAMESPACE_LEN;
1488 else if (strchr (break_characters, *p) == NULL)
1495 break; /* Out of the while (1). This would happen
1496 for instance if we have looked up
1497 unsuccessfully all the components of the
1498 string, and p->""(PASS2). */
1500 /* We get here if p points to one of the break characters or "" (i.e.,
1502 /* Save restart for next time around. */
1504 /* Restore argptr as it was on entry to this function. */
1505 *argptr = saved_arg2;
1506 /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun",
1509 /* All ready for next pass through the loop. */
1513 /* Start of lookup in the symbol tables. */
1515 /* Lookup in the symbol table the substring between argptr and
1516 p. Note, this call changes the value of argptr. */
1517 /* Before the call, argptr->"AAA::inA::fun",
1518 p->"", p2->"::fun". After the call: argptr->"fun", p, p2
1520 sym_class = lookup_prefix_sym (argptr, p2, file_symtab);
1522 /* If sym_class has been found, and if "AAA::inA" is a class, then
1523 we're in case 1 above. So we look up "fun" as a method of that
1526 (t = check_typedef (SYMBOL_TYPE (sym_class)),
1527 (TYPE_CODE (t) == TYPE_CODE_STRUCT
1528 || TYPE_CODE (t) == TYPE_CODE_UNION)))
1530 /* Arg token is not digits => try it as a function name.
1531 Find the next token (everything up to end or next
1534 && strchr (get_gdb_completer_quote_characters (),
1537 p = skip_quoted (*argptr);
1538 *argptr = *argptr + 1;
1542 /* At this point argptr->"fun". */
1546 while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':'
1549 /* At this point p->"". String ended. */
1550 /* Nope, C++ operators could have spaces in them
1551 ("foo::operator <" or "foo::operator delete []").
1552 I apologize, this is a bit hacky... */
1553 if (current_language->la_language == language_cplus
1554 && *p == ' ' && p - 8 - *argptr + 1 > 0)
1556 /* The above loop has already swallowed "operator". */
1557 p += cp_validate_operator (p - 8) - 8;
1560 /* Keep any important naming information. */
1561 p = keep_name_info (p);
1563 /* Java may append typenames, so assume that if there is
1564 anything else left in *argptr, it must be a typename. */
1565 if (*p && current_language->la_language == language_java)
1572 copy = (char *) alloca (p2 - p + 1);
1573 memcpy (copy, p, p2 - p);
1574 copy[p2 - p] = '\0';
1575 type = lookup_typename (current_language, get_current_arch (),
1579 /* Save the location of this just in case this
1580 method/type combination isn't actually defined.
1581 It will be checked later. */
1582 saved_java_argptr = p;
1588 /* Allocate our own copy of the substring between argptr and
1590 copy = (char *) alloca (p - *argptr + 1);
1591 memcpy (copy, *argptr, p - *argptr);
1592 copy[p - *argptr] = '\0';
1594 && copy[p - *argptr - 1]
1595 && strchr (get_gdb_completer_quote_characters (),
1596 copy[p - *argptr - 1]) != NULL)
1597 copy[p - *argptr - 1] = '\0';
1599 /* At this point copy->"fun", p->"". */
1601 /* No line number may be specified. */
1602 while (*p == ' ' || *p == '\t')
1605 /* At this point arptr->"". */
1607 /* Look for copy as a method of sym_class. */
1608 /* At this point copy->"fun", sym_class is "AAA:inA",
1609 saved_arg->"AAA::inA::fun". This concludes the scanning of
1610 the string for possible components matches. If we find it
1611 here, we return. If not, and we are at the and of the string,
1612 we'll lookup the whole string in the symbol tables. */
1614 values = find_method (funfirstline, canonical, saved_arg,
1615 copy, t, sym_class, file_symtab);
1616 if (saved_java_argptr != NULL && values.nelts == 1)
1618 /* The user specified a specific return type for a java method.
1619 Double-check that it really is the one the user specified.
1620 [This is a necessary evil because strcmp_iw_ordered stops
1621 comparisons too prematurely.] */
1622 sym = find_pc_sect_function (values.sals[0].pc,
1623 values.sals[0].section);
1624 /* We just found a SAL, we had better be able to go backwards! */
1625 gdb_assert (sym != NULL);
1626 if (strcmp_iw (SYMBOL_LINKAGE_NAME (sym), saved_arg) != 0)
1628 xfree (values.sals);
1629 error (_("the class `%s' does not have "
1630 "any method instance named %s"),
1631 SYMBOL_PRINT_NAME (sym_class), copy);
1635 } /* End if symbol found. */
1638 /* We couldn't find a class, so we're in case 2 above. We check the
1639 entire name as a symbol instead. */
1641 p = keep_name_info (p);
1643 copy = (char *) alloca (p - saved_arg2 + 1);
1644 memcpy (copy, saved_arg2, p - saved_arg2);
1645 /* Note: if is_quoted should be true, we snuff out quote here
1647 copy[p - saved_arg2] = '\000';
1648 /* Set argptr to skip over the name. */
1649 *argptr = (*p == '\'') ? p + 1 : p;
1651 /* Look up entire name. */
1652 sym = lookup_symbol (copy, get_selected_block (0), VAR_DOMAIN, 0);
1654 return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL);
1657 struct minimal_symbol *msym;
1659 /* Couldn't find any interpretation as classes/namespaces. As a last
1660 resort, try the minimal symbol tables. */
1661 msym = lookup_minimal_symbol (copy, NULL, NULL);
1663 return minsym_found (funfirstline, msym);
1666 /* Couldn't find a minimal symbol, either, so give up. */
1667 cplusplus_error (the_real_saved_arg,
1668 "Can't find member of namespace, "
1669 "class, struct, or union named \"%s\"\n",
1673 /* Next come some helper functions for decode_compound. */
1675 /* Return the symbol corresponding to the substring of *ARGPTR ending
1676 at P, allowing whitespace. Also, advance *ARGPTR past the symbol
1677 name in question, the compound object separator ("::" or "."), and
1678 whitespace. Note that *ARGPTR is changed whether or not the
1679 lookup_symbol call finds anything (i.e we return NULL). As an
1680 example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */
1682 static struct symbol *
1683 lookup_prefix_sym (char **argptr, char *p, struct symtab *file_symtab)
1689 /* Extract the class name. */
1691 while (p != *argptr && p[-1] == ' ')
1693 copy = (char *) alloca (p - *argptr + 1);
1694 memcpy (copy, *argptr, p - *argptr);
1695 copy[p - *argptr] = 0;
1697 /* Discard the class name from the argptr. */
1698 p = p1 + (p1[0] == ':' ? 2 : 1);
1699 while (*p == ' ' || *p == '\t')
1703 /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA",
1704 argptr->"inA::fun". */
1706 sym = lookup_symbol (copy, get_search_block (file_symtab), STRUCT_DOMAIN, 0);
1709 /* Typedefs are in VAR_DOMAIN so the above symbol lookup will
1710 fail when the user attempts to lookup a method of a class
1711 via a typedef'd name (NOT via the class's name, which is already
1712 handled in symbol_matches_domain). So try the lookup again
1713 using VAR_DOMAIN (where typedefs live) and double-check that we
1714 found a struct/class type. */
1715 struct symbol *s = lookup_symbol (copy, 0, VAR_DOMAIN, 0);
1719 struct type *t = SYMBOL_TYPE (s);
1722 if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
1730 /* This finds the method COPY in the class whose type is T and whose
1731 symbol is SYM_CLASS. */
1733 static struct symtabs_and_lines
1734 find_method (int funfirstline, struct linespec_result *canonical,
1736 char *copy, struct type *t, struct symbol *sym_class,
1737 struct symtab *file_symtab)
1739 struct symtabs_and_lines values;
1740 struct symbol *sym = NULL;
1741 int i1; /* Counter for the symbol array. */
1742 struct symbol **sym_arr = alloca (total_number_of_methods (t)
1743 * sizeof (struct symbol *));
1745 /* Find all methods with a matching name, and put them in
1748 i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr,
1753 /* There is exactly one field with that name. */
1756 if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
1758 values.sals = (struct symtab_and_line *)
1759 xmalloc (sizeof (struct symtab_and_line));
1761 values.sals[0] = find_function_start_sal (sym,
1773 /* If we were given a specific overload instance, use that
1774 (or error if no matches were found). Otherwise ask the user
1775 which one to use. */
1776 if (strchr (copy, '('))
1781 struct cleanup *cleanup;
1783 /* Construct the proper search name based on SYM_CLASS and COPY.
1784 SAVED_ARG may contain a valid name, but that name might not be
1785 what is actually stored in the symbol table. For example,
1786 if SAVED_ARG (and SYM_CLASS) were found via an import
1787 ("using namespace" in C++), then the physname of
1788 SYM_CLASS ("A::myclass") may not be the same as SAVED_ARG
1790 name = xmalloc (strlen (SYMBOL_NATURAL_NAME (sym_class))
1791 + 2 /* "::" */ + strlen (copy) + 1);
1792 strcpy (name, SYMBOL_NATURAL_NAME (sym_class));
1793 strcat (name, "::");
1794 strcat (name, copy);
1795 canon = cp_canonicalize_string (name);
1801 cleanup = make_cleanup (xfree, name);
1803 for (i = 0; i < i1; ++i)
1805 if (strcmp_iw (name, SYMBOL_LINKAGE_NAME (sym_arr[i])) == 0)
1807 values.sals = (struct symtab_and_line *)
1808 xmalloc (sizeof (struct symtab_and_line));
1810 values.sals[0] = find_function_start_sal (sym_arr[i],
1812 do_cleanups (cleanup);
1817 cplusplus_error (saved_arg, _("the class `%s' does not have "
1818 "any method instance named %s"),
1819 SYMBOL_PRINT_NAME (sym_class), copy);
1822 return decode_line_2 (sym_arr, i1, funfirstline, canonical);
1827 cplusplus_error (saved_arg,
1828 "the class `%s' does not have destructor defined\n",
1829 SYMBOL_PRINT_NAME (sym_class));
1831 cplusplus_error (saved_arg,
1832 "the class %s does not have any method named %s\n",
1833 SYMBOL_PRINT_NAME (sym_class), copy);
1839 /* Return the symtab associated to the filename given by the substring
1840 of *ARGPTR ending at P, and advance ARGPTR past that filename. */
1842 static struct symtab *
1843 symtab_from_filename (char **argptr, char *p, int is_quote_enclosed)
1847 struct symtab *file_symtab;
1850 while (p != *argptr && p[-1] == ' ')
1852 if ((*p == '"') && is_quote_enclosed)
1854 copy = (char *) alloca (p - *argptr + 1);
1855 memcpy (copy, *argptr, p - *argptr);
1856 /* It may have the ending quote right after the file name. */
1857 if ((is_quote_enclosed && copy[p - *argptr - 1] == '"')
1858 || copy[p - *argptr - 1] == '\'')
1859 copy[p - *argptr - 1] = 0;
1861 copy[p - *argptr] = 0;
1863 /* Find that file's data. */
1864 file_symtab = lookup_symtab (copy);
1865 if (file_symtab == 0)
1867 if (!have_full_symbols () && !have_partial_symbols ())
1868 throw_error (NOT_FOUND_ERROR,
1869 _("No symbol table is loaded. "
1870 "Use the \"file\" command."));
1871 throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy);
1874 /* Discard the file name from the arg. */
1876 while (*p == ' ' || *p == '\t')
1883 /* Look up a function symbol in *ARGPTR. If found, advance *ARGPTR
1884 and return the symbol. If not found, return NULL. */
1886 static struct symbol *
1887 find_function_symbol (char **argptr, char *p, int is_quote_enclosed)
1891 struct symbol *function_symbol;
1894 while (p != *argptr && p[-1] == ' ')
1896 if ((*p == '"') && is_quote_enclosed)
1898 copy = (char *) alloca (p - *argptr + 1);
1899 memcpy (copy, *argptr, p - *argptr);
1900 /* It may have the ending quote right after the file name. */
1901 if ((is_quote_enclosed && copy[p - *argptr - 1] == '"')
1902 || copy[p - *argptr - 1] == '\'')
1903 copy[p - *argptr - 1] = 0;
1905 copy[p - *argptr] = 0;
1907 function_symbol = lookup_symbol (copy, get_selected_block (0),
1909 if (!function_symbol || SYMBOL_CLASS (function_symbol) != LOC_BLOCK)
1912 /* Discard the file name from the arg. */
1914 while (*p == ' ' || *p == '\t')
1918 return function_symbol;
1923 /* This decodes a line where the argument is all digits (possibly
1924 preceded by a sign). Q should point to the end of those digits;
1925 the other arguments are as usual. */
1927 static struct symtabs_and_lines
1928 decode_all_digits (char **argptr, struct symtab *default_symtab,
1929 int default_line, struct linespec_result *canonical,
1930 struct symtab *file_symtab, char *q)
1933 struct symtabs_and_lines values;
1934 struct symtab_and_line val;
1942 /* We might need a canonical line spec if no file was specified. */
1943 int need_canonical = (file_symtab == NULL) ? 1 : 0;
1947 val.pspace = current_program_space;
1949 /* This is where we need to make sure that we have good defaults.
1950 We must guarantee that this section of code is never executed
1951 when we are called with just a function name, since
1952 set_default_source_symtab_and_line uses
1953 select_source_symtab that calls us with such an argument. */
1955 if (file_symtab == 0 && default_symtab == 0)
1957 /* Make sure we have at least a default source file. */
1958 set_default_source_symtab_and_line ();
1959 initialize_defaults (&default_symtab, &default_line);
1962 if (**argptr == '+')
1963 sign = plus, (*argptr)++;
1964 else if (**argptr == '-')
1965 sign = minus, (*argptr)++;
1966 val.line = atoi (*argptr);
1972 if (file_symtab == 0)
1973 val.line = default_line + val.line;
1978 if (file_symtab == 0)
1979 val.line = default_line - val.line;
1984 break; /* No need to adjust val.line. */
1987 while (*q == ' ' || *q == '\t')
1990 if (file_symtab == 0)
1991 file_symtab = default_symtab;
1993 /* It is possible that this source file has more than one symtab,
1994 and that the new line number specification has moved us from the
1995 default (in file_symtab) to a new one. */
1996 val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL);
1997 if (val.symtab == 0)
1998 val.symtab = file_symtab;
2000 val.pspace = SYMTAB_PSPACE (val.symtab);
2002 values.sals = (struct symtab_and_line *)
2003 xmalloc (sizeof (struct symtab_and_line));
2004 values.sals[0] = val;
2007 build_canonical_line_spec (values.sals, NULL, canonical);
2008 values.sals[0].explicit_line = 1;
2014 /* Decode a linespec starting with a dollar sign. */
2016 static struct symtabs_and_lines
2017 decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
2018 struct linespec_result *canonical, struct symtab *file_symtab)
2022 int need_canonical = 0;
2023 struct symtabs_and_lines values;
2024 struct symtab_and_line val;
2027 struct minimal_symbol *msymbol;
2029 p = (copy[1] == '$') ? copy + 2 : copy + 1;
2030 while (*p >= '0' && *p <= '9')
2032 if (!*p) /* Reached end of token without hitting non-digit. */
2034 /* We have a value history reference. */
2035 struct value *val_history;
2037 sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index);
2038 val_history = access_value_history ((copy[1] == '$') ? -index : index);
2039 if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT)
2040 error (_("History values used in line "
2041 "specs must have integer values."));
2042 valx = value_as_long (val_history);
2046 /* Not all digits -- may be user variable/function or a
2047 convenience variable. */
2049 /* Look up entire name as a symbol first. */
2050 sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0);
2051 file_symtab = (struct symtab *) NULL;
2053 /* Symbol was found --> jump to normal symbol processing. */
2055 return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL);
2057 /* If symbol was not found, look in minimal symbol tables. */
2058 msymbol = lookup_minimal_symbol (copy, NULL, NULL);
2059 /* Min symbol was found --> jump to minsym processing. */
2061 return minsym_found (funfirstline, msymbol);
2063 /* Not a user variable or function -- must be convenience variable. */
2064 if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx))
2065 error (_("Convenience variables used in line "
2066 "specs must have integer values."));
2071 /* Either history value or convenience value from above, in valx. */
2072 val.symtab = file_symtab ? file_symtab : default_symtab;
2075 val.pspace = current_program_space;
2077 values.sals = (struct symtab_and_line *) xmalloc (sizeof val);
2078 values.sals[0] = val;
2082 build_canonical_line_spec (values.sals, NULL, canonical);
2089 /* A helper for decode_line_1 that tries to find a label. The label
2090 is searched for in the current block.
2091 FUNCTION_SYMBOL is the enclosing function; or NULL if none
2093 COPY is the name of the label to find.
2094 CANONICAL is the same as the "canonical" argument to decode_line_1.
2095 RESULT is a pointer to a symtabs_and_lines structure which will be
2096 filled in on success.
2097 This function returns 1 if a label was found, 0 otherwise. */
2100 decode_label (struct symbol *function_symbol, char *copy,
2101 struct linespec_result *canonical,
2102 struct symtabs_and_lines *result)
2105 struct block *block;
2107 if (function_symbol)
2108 block = SYMBOL_BLOCK_VALUE (function_symbol);
2111 block = get_selected_block (0);
2113 block && !BLOCK_FUNCTION (block);
2114 block = BLOCK_SUPERBLOCK (block))
2118 function_symbol = BLOCK_FUNCTION (block);
2121 sym = lookup_symbol (copy, block, LABEL_DOMAIN, 0);
2124 *result = symbol_found (0, canonical, copy, sym, NULL, function_symbol);
2129 /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL,
2130 look in that symtab's static variables first. */
2132 static struct symtabs_and_lines
2133 decode_variable (char *copy, int funfirstline,
2134 struct linespec_result *canonical,
2135 struct symtab *file_symtab)
2138 struct minimal_symbol *msymbol;
2140 sym = lookup_symbol (copy, get_search_block (file_symtab),
2144 return symbol_found (funfirstline, canonical, copy, sym, file_symtab, NULL);
2146 msymbol = lookup_minimal_symbol (copy, NULL, NULL);
2148 if (msymbol != NULL)
2149 return minsym_found (funfirstline, msymbol);
2151 if (!have_full_symbols ()
2152 && !have_partial_symbols ()
2153 && !have_minimal_symbols ())
2154 throw_error (NOT_FOUND_ERROR,
2155 _("No symbol table is loaded. Use the \"file\" command."));
2156 throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy);
2162 /* Now come some functions that are called from multiple places within
2165 /* We've found a symbol SYM to associate with our linespec; build a
2166 corresponding struct symtabs_and_lines. */
2168 static struct symtabs_and_lines
2169 symbol_found (int funfirstline, struct linespec_result *canonical, char *copy,
2170 struct symbol *sym, struct symtab *file_symtab,
2171 struct symbol *function_symbol)
2173 struct symtabs_and_lines values;
2175 if (SYMBOL_CLASS (sym) == LOC_BLOCK)
2177 /* Arg is the name of a function. */
2178 values.sals = (struct symtab_and_line *)
2179 xmalloc (sizeof (struct symtab_and_line));
2180 values.sals[0] = find_function_start_sal (sym, funfirstline);
2183 /* Don't use the SYMBOL_LINE; if used at all it points to
2184 the line containing the parameters or thereabouts, not
2185 the first line of code. */
2187 /* We might need a canonical line spec if it is a static
2189 if (file_symtab == 0)
2191 struct blockvector *bv = BLOCKVECTOR (SYMBOL_SYMTAB (sym));
2192 struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
2194 if (lookup_block_symbol (b, copy, VAR_DOMAIN) != NULL)
2195 build_canonical_line_spec (values.sals, copy, canonical);
2201 if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0)
2203 /* We know its line number. */
2204 values.sals = (struct symtab_and_line *)
2205 xmalloc (sizeof (struct symtab_and_line));
2207 init_sal (&values.sals[0]);
2208 values.sals[0].symtab = SYMBOL_SYMTAB (sym);
2209 values.sals[0].line = SYMBOL_LINE (sym);
2210 values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym);
2211 values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym));
2212 values.sals[0].explicit_pc = 1;
2216 canonical->special_display = 1;
2217 canonical->canonical = xmalloc (sizeof (char *));
2218 canonical->canonical[0]
2219 = xstrprintf ("%s:%s",
2220 SYMBOL_NATURAL_NAME (function_symbol),
2221 SYMBOL_NATURAL_NAME (sym));
2226 else if (funfirstline)
2228 /* NOT_FOUND_ERROR is not correct but it ensures COPY will be
2229 searched also as a minimal symbol. */
2231 throw_error (NOT_FOUND_ERROR, _("\"%s\" is not a function"), copy);
2233 else if (SYMBOL_LINE (sym) != 0)
2235 /* We know its line number. */
2236 values.sals = (struct symtab_and_line *)
2237 xmalloc (sizeof (struct symtab_and_line));
2239 memset (&values.sals[0], 0, sizeof (values.sals[0]));
2240 values.sals[0].symtab = SYMBOL_SYMTAB (sym);
2241 values.sals[0].line = SYMBOL_LINE (sym);
2242 values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym));
2246 /* This can happen if it is compiled with a compiler which doesn't
2247 put out line numbers for variables. */
2248 /* FIXME: Shouldn't we just set .line and .symtab to zero
2249 and return? For example, "info line foo" could print
2251 error (_("Line number not known for symbol \"%s\""), copy);
2255 /* We've found a minimal symbol MSYMBOL to associate with our
2256 linespec; build a corresponding struct symtabs_and_lines. */
2258 static struct symtabs_and_lines
2259 minsym_found (int funfirstline, struct minimal_symbol *msymbol)
2261 struct objfile *objfile = msymbol_objfile (msymbol);
2262 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2263 struct symtabs_and_lines values;
2266 values.sals = (struct symtab_and_line *)
2267 xmalloc (sizeof (struct symtab_and_line));
2268 values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol),
2269 (struct obj_section *) 0, 0);
2270 values.sals[0].section = SYMBOL_OBJ_SECTION (msymbol);
2272 /* The minimal symbol might point to a function descriptor;
2273 resolve it to the actual code address instead. */
2274 pc = gdbarch_convert_from_func_ptr_addr (gdbarch,
2277 if (pc != values.sals[0].pc)
2278 values.sals[0] = find_pc_sect_line (pc, NULL, 0);
2281 skip_prologue_sal (&values.sals[0]);
2288 init_linespec_result (struct linespec_result *lr)
2290 memset (lr, 0, sizeof (*lr));