* source.c (openp): Squelch warning about "filename".

[deliverable/binutils-gdb.git] / gdb / source.h

diff --git a/gdb/source.h b/gdb/source.h
index 8dbf85170563ded2208652154a0101d26c309212..ba7d45f5260c8ebdb13bf653d406cbbc13df9600 100644 (file)
--- a/gdb/source.h
+++ b/gdb/source.h
@@ -31,4 +31,36 @@ extern int open_source_file (struct symtab *s);
    lines.  */
 extern void find_source_lines (struct symtab *s, int desc);
 
+/* Return the first line listed by print_source_lines.
+   Used by command interpreters to request listing from
+   a previous point. */
+extern int get_first_line_listed (void);
+
+/* Return the default number of lines to print with commands like the
+   cli "list".  The caller of print_source_lines must use this to
+   calculate the end line and use it in the call to print_source_lines
+   as it does not automatically use this value. */
+extern int get_lines_to_list (void);
+
+/* Return the current source file for listing and next line to list.
+   NOTE: The returned sal pc and end fields are not valid. */
+extern struct symtab_and_line get_current_source_symtab_and_line (void);
+
+/* If the current source file for listing is not set, try and get a default.
+   Usually called before get_current_source_symtab_and_line() is called.
+   It may err out if a default cannot be determined.
+   We must be cautious about where it is called, as it can recurse as the
+   process of determining a new default may call the caller!
+   Use get_current_source_symtab_and_line only to get whatever
+   we have without erroring out or trying to get a default. */
+extern void set_default_source_symtab_and_line (void);
+
+/* Return the current default file for listing and next line to list
+   (the returned sal pc and end fields are not valid.)
+   and set the current default to whatever is in SAL.
+   NOTE: The returned sal pc and end fields are not valid. */
+extern struct symtab_and_line set_current_source_symtab_and_line (const struct symtab_and_line *);
+
+/* Reset any information stored about a default file and line to print. */
+extern void clear_current_source_symtab_and_line (void);
 #endif