2003-12-17 Jeff Johnston <jjohnstn@redhat.com>

        * linespec.h (decode_line_1): Add new not_found_ptr parameter.
        * linespec.c (decode_line_1): Add new parameter.  Pass on
        new parameter to decode_variable and symtab_from_filename
        functions.
        (decode_variable): Add new not_found_ptr parameter.  Throw exception
        rather than failing if the not_found_ptr is non-null and the
        function is not found.
        (symtab_from_filename): Add new not_found_ptr parametr.   Throw
        exception rather than failing if the not_found_ptr is non-null and
        the source file is not found.
        * breakpoint.c: Change all callers of decode_line_1 to add default
        extra parameter for decode_line_1 calls.
        * tracepoint.c: Ditto.
        * cli/cli-cmds.c: Ditto.

1 files changed, 39 insertions, 10 deletions

diff --git a/gdb/linespec.c b/gdb/linespec.c
index b3eb05ffcd6..741ac883504 100644
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -100,7 +100,8 @@ static struct symtabs_and_lines decode_line_2 (struct symbol *[],
 					       int, int, char ***);
 
 static struct symtab *symtab_from_filename (char **argptr,
-					    char *p, int is_quote_enclosed);
+					    char *p, int is_quote_enclosed,
+					    int *not_found_ptr);
 
 static struct
 symtabs_and_lines decode_all_digits (char **argptr,
@@ -119,7 +120,8 @@ static struct symtabs_and_lines decode_dollar (char *copy,
 static struct symtabs_and_lines decode_variable (char *copy,
 						 int funfirstline,
 						 char ***canonical,
-						 struct symtab *file_symtab);
+						 struct symtab *file_symtab,
+						 int *not_found_ptr);
 
 static struct
 symtabs_and_lines symbol_found (int funfirstline,
@@ -637,7 +639,12 @@ decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline,
 
    Note that it is possible to return zero for the symtab
    if no file is validly specified.  Callers must check that.
-   Also, the line number returned may be invalid.  */
+   Also, the line number returned may be invalid.  
+ 
+   If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based
+   on whether or not failure occurs due to an unknown function or file.  In the case
+   where failure does occur due to an unknown function or file, do not issue an error
+   message.  */
 
 /* We allow single quotes in various places.  This is a hideous
    kludge, which exists because the completer can't yet deal with the
@@ -646,7 +653,7 @@ decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline,
 
 struct symtabs_and_lines
 decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
-	       int default_line, char ***canonical)
+	       int default_line, char ***canonical, int *not_found_ptr)
 {
   char *p;
   char *q;
@@ -665,6 +672,9 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
   int is_objc_method = 0;
   char *saved_arg = *argptr;
 
+  if (not_found_ptr)
+    *not_found_ptr = 0;
+
   /* Defaults have defaults.  */
 
   initialize_defaults (&default_symtab, &default_line);
@@ -722,7 +732,8 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
       /* No, the first part is a filename; set s to be that file's
 	 symtab.  Also, move argptr past the filename.  */
 
-      file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed);
+      file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, 
+		      			  not_found_ptr);
     }
 #if 0
   /* No one really seems to know why this was added. It certainly
@@ -827,7 +838,8 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
   /* Look up that token as a variable.
      If file specified, use that file's per-file block to start with.  */
 
-  return decode_variable (copy, funfirstline, canonical, file_symtab);
+  return decode_variable (copy, funfirstline, canonical,
+			  file_symtab, not_found_ptr);
 }
 
 
@@ -1422,10 +1434,14 @@ collect_methods (char *copy, struct type *t,
 
 
 /* Return the symtab associated to the filename given by the substring
-   of *ARGPTR ending at P, and advance ARGPTR past that filename.  */
+   of *ARGPTR ending at P, and advance ARGPTR past that filename.  If
+   NOT_FOUND_PTR is not null and the source file is not found, store
+   boolean true at the location pointed to and do not issue an
+   error message.  */
 
 static struct symtab *
-symtab_from_filename (char **argptr, char *p, int is_quote_enclosed)
+symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, 
+		      int *not_found_ptr)
 {
   char *p1;
   char *copy;
@@ -1450,6 +1466,11 @@ symtab_from_filename (char **argptr, char *p, int is_quote_enclosed)
     {
       if (!have_full_symbols () && !have_partial_symbols ())
 	error ("No symbol table is loaded.  Use the \"file\" command.");
+      if (not_found_ptr)
+	{
+	  *not_found_ptr = 1;
+	  throw_exception (RETURN_ERROR);
+	}
       error ("No source file named %s.", copy);
     }
 
@@ -1626,11 +1647,13 @@ decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab,
 
 
 /* Decode a linespec that's a variable.  If FILE_SYMTAB is non-NULL,
-   look in that symtab's static variables first.  */
+   look in that symtab's static variables first.  If NOT_FOUND_PTR is not NULL and
+   the function cannot be found, store boolean true in the location pointed to
+   and do not issue an error message.  */ 
 
 static struct symtabs_and_lines
 decode_variable (char *copy, int funfirstline, char ***canonical,
-		 struct symtab *file_symtab)
+		 struct symtab *file_symtab, int *not_found_ptr)
 {
   struct symbol *sym;
   /* The symtab that SYM was found in.  */
@@ -1658,6 +1681,12 @@ decode_variable (char *copy, int funfirstline, char ***canonical,
       !have_partial_symbols () && !have_minimal_symbols ())
     error ("No symbol table is loaded.  Use the \"file\" command.");
 
+  if (not_found_ptr)
+    {
+      *not_found_ptr = 1;
+      throw_exception (RETURN_ERROR);
+    }
+  
   error ("Function \"%s\" not defined.", copy);
 }