#ifndef SOURCE_H
#define SOURCE_H
-#include "common/scoped_fd.h"
+#include "gdbsupport/scoped_fd.h"
struct symtab;
filename. It depends on 'set filename-display' value. */
extern const char *symtab_to_filename_for_display (struct symtab *symtab);
-/* Create and initialize the table S->line_charpos that records the
- positions of the lines in the source file, which is assumed to be
- open on descriptor DESC. All set S->nlines to the number of such
- 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. If
0, then no source lines have yet been listed since the last time
/* Add a source path substitution rule. */
extern void add_substitute_path_rule (char *, char *);
-/* Print text describing the full name of the source file S
- and the line number LINE and its corresponding character position.
- The text starts with two Ctrl-z so that the Emacs-GDB interface
- can easily find it.
-
- MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
-
- Return 1 if successful, 0 if could not find the file. */
-extern int identify_source_line (struct symtab *s, int line,
- int mid_statement, CORE_ADDR pc);
-
/* Flags passed as 4th argument to print_source_lines. */
enum print_source_lines_flag
{
extern void print_source_lines (struct symtab *s, int line, int stopline,
print_source_lines_flags flags);
+/* Wrap up the logic to build a line number range for passing to
+ print_source_lines when using get_lines_to_list. An instance of this
+ class can be built from a single line number and a direction (forward or
+ backward) the range is then computed using get_lines_to_list. */
+class source_lines_range
+{
+public:
+ /* When constructing the range from a single line number, does the line
+ range extend forward, or backward. */
+ enum direction
+ {
+ FORWARD,
+ BACKWARD
+ };
+
+ /* Construct a SOURCE_LINES_RANGE starting at STARTLINE and extending in
+ direction DIR. The number of lines is from GET_LINES_TO_LIST. If the
+ direction is backward then the start is actually (STARTLINE -
+ GET_LINES_TO_LIST). There is also logic in place to ensure the start
+ is always 1 or more, and the end will be at most INT_MAX. */
+ explicit source_lines_range (int startline, direction dir = FORWARD);
+
+ /* Construct a SOURCE_LINES_RANGE from STARTLINE to STOPLINE. */
+ explicit source_lines_range (int startline, int stopline)
+ : m_startline (startline),
+ m_stopline (stopline)
+ { /* Nothing. */ }
+
+ /* Return the line to start listing from. */
+ int startline () const
+ { return m_startline; }
+
+ /* Return the line after the last line that should be listed. */
+ int stopline () const
+ { return m_stopline; }
+
+private:
+
+ /* The start and end of the range. */
+ int m_startline;
+ int m_stopline;
+};
+
+/* Variation of previous print_source_lines that takes a range instead of a
+ start and end line number. */
+extern void print_source_lines (struct symtab *s, source_lines_range r,
+ print_source_lines_flags flags);
+
/* Forget line positions and file names for the symtabs in a
particular objfile. */
extern void forget_cached_source_info_for_objfile (struct objfile *);