static int current_display_number;
+/* Last allocated display number. */
+
+static int display_number;
+
struct display
{
- /* Chain link to next auto-display item. */
- struct display *next;
+ display (const char *exp_string_, expression_up &&exp_,
+ const struct format_data &format_, struct program_space *pspace_,
+ const struct block *block_)
+ : exp_string (exp_string_),
+ exp (std::move (exp_)),
+ number (++display_number),
+ format (format_),
+ pspace (pspace_),
+ block (block_),
+ enabled_p (true)
+ {
+ }
/* The expression as the user typed it. */
- char *exp_string;
+ std::string exp_string;
/* Expression to be evaluated and displayed. */
expression_up exp;
const struct block *block;
/* Status of this display (enabled or disabled). */
- int enabled_p;
+ bool enabled_p;
};
-/* Chain of expressions whose values should be displayed
- automatically each time the program stops. */
-
-static struct display *display_chain;
+/* Expressions whose values should be displayed automatically each
+ time the program stops. */
-static int display_number;
-
-/* Walk the following statement or block through all displays.
- ALL_DISPLAYS_SAFE does so even if the statement deletes the current
- display. */
-
-#define ALL_DISPLAYS(B) \
- for (B = display_chain; B; B = B->next)
-
-#define ALL_DISPLAYS_SAFE(B,TMP) \
- for (B = display_chain; \
- B ? (TMP = B->next, 1): 0; \
- B = TMP)
+static std::vector<std::unique_ptr<struct display>> all_displays;
/* Prototypes for local functions. */
innermost_block_tracker tracker;
expression_up expr = parse_expression (exp, &tracker);
- newobj = new display ();
-
- newobj->exp_string = xstrdup (exp);
- newobj->exp = std::move (expr);
- newobj->block = tracker.block ();
- newobj->pspace = current_program_space;
- newobj->number = ++display_number;
- newobj->format = fmt;
- newobj->enabled_p = 1;
- newobj->next = NULL;
-
- if (display_chain == NULL)
- display_chain = newobj;
- else
- {
- struct display *last;
-
- for (last = display_chain; last->next != NULL; last = last->next)
- ;
- last->next = newobj;
- }
+ newobj = new display (exp, std::move (expr), fmt,
+ current_program_space, tracker.block ());
+ all_displays.emplace_back (newobj);
if (from_tty)
do_one_display (newobj);
dont_repeat ();
}
-static void
-free_display (struct display *d)
-{
- xfree (d->exp_string);
- delete d;
-}
-
/* Clear out the display_chain. Done when new symtabs are loaded,
since this invalidates the types stored in many expressions. */
void
-clear_displays (void)
+clear_displays ()
{
- struct display *d;
-
- while ((d = display_chain) != NULL)
- {
- display_chain = d->next;
- free_display (d);
- }
+ all_displays.clear ();
}
/* Delete the auto-display DISPLAY. */
static void
delete_display (struct display *display)
{
- struct display *d;
-
gdb_assert (display != NULL);
- if (display_chain == display)
- display_chain = display->next;
-
- ALL_DISPLAYS (d)
- if (d->next == display)
- {
- d->next = display->next;
- break;
- }
-
- free_display (display);
+ auto iter = std::find_if (all_displays.begin (),
+ all_displays.end (),
+ [=] (const std::unique_ptr<struct display> &item)
+ {
+ return item.get () == display;
+ });
+ gdb_assert (iter != all_displays.end ());
+ all_displays.erase (iter);
}
/* Call FUNCTION on each of the displays whose numbers are given in
static void
map_display_numbers (const char *args,
- void (*function) (struct display *,
- void *),
- void *data)
+ gdb::function_view<void (struct display *)> function)
{
int num;
warning (_("bad display number at or near '%s'"), p);
else
{
- struct display *d, *tmp;
-
- ALL_DISPLAYS_SAFE (d, tmp)
- if (d->number == num)
- break;
- if (d == NULL)
+ auto iter = std::find_if (all_displays.begin (),
+ all_displays.end (),
+ [=] (const std::unique_ptr<display> &item)
+ {
+ return item->number == num;
+ });
+ if (iter == all_displays.end ())
printf_unfiltered (_("No display number %d.\n"), num);
else
- function (d, data);
+ function (iter->get ());
}
}
}
-/* Callback for map_display_numbers, that deletes a display. */
-
-static void
-do_delete_display (struct display *d, void *data)
-{
- delete_display (d);
-}
-
/* "undisplay" command. */
static void
return;
}
- map_display_numbers (args, do_delete_display, NULL);
+ map_display_numbers (args, delete_display);
dont_repeat ();
}
{
int within_current_scope;
- if (d->enabled_p == 0)
+ if (!d->enabled_p)
return;
/* The expression carries the architecture that was used at parse time.
try
{
innermost_block_tracker tracker;
- d->exp = parse_expression (d->exp_string, &tracker);
+ d->exp = parse_expression (d->exp_string.c_str (), &tracker);
d->block = tracker.block ();
}
catch (const gdb_exception &ex)
{
/* Can't re-parse the expression. Disable this display item. */
- d->enabled_p = 0;
+ d->enabled_p = false;
warning (_("Unable to display \"%s\": %s"),
- d->exp_string, ex.what ());
+ d->exp_string.c_str (), ex.what ());
return;
}
}
annotate_display_expression ();
- puts_filtered (d->exp_string);
+ puts_filtered (d->exp_string.c_str ());
annotate_display_expression_end ();
if (d->format.count != 1 || d->format.format == 'i')
annotate_display_expression ();
- puts_filtered (d->exp_string);
+ puts_filtered (d->exp_string.c_str ());
annotate_display_expression_end ();
printf_filtered (" = ");
void
do_displays (void)
{
- struct display *d;
-
- for (d = display_chain; d; d = d->next)
- do_one_display (d);
+ for (auto &d : all_displays)
+ do_one_display (d.get ());
}
/* Delete the auto-display which we were in the process of displaying.
void
disable_display (int num)
{
- struct display *d;
-
- for (d = display_chain; d; d = d->next)
+ for (auto &d : all_displays)
if (d->number == num)
{
- d->enabled_p = 0;
+ d->enabled_p = false;
return;
}
printf_unfiltered (_("No display number %d.\n"), num);
static void
info_display_command (const char *ignore, int from_tty)
{
- struct display *d;
-
- if (!display_chain)
+ if (all_displays.empty ())
printf_unfiltered (_("There are no auto-display expressions now.\n"));
else
printf_filtered (_("Auto-display expressions now in effect:\n\
Num Enb Expression\n"));
- for (d = display_chain; d; d = d->next)
+ for (auto &d : all_displays)
{
printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
if (d->format.size)
d->format.format);
else if (d->format.format)
printf_filtered ("/%c ", d->format.format);
- puts_filtered (d->exp_string);
+ puts_filtered (d->exp_string.c_str ());
if (d->block && !contained_in (get_selected_block (0), d->block, true))
printf_filtered (_(" (cannot be evaluated in the current context)"));
printf_filtered ("\n");
}
}
-/* Callback fo map_display_numbers, that enables or disables the
- passed in display D. */
-
-static void
-do_enable_disable_display (struct display *d, void *data)
-{
- d->enabled_p = *(int *) data;
-}
-
/* Implementation of both the "disable display" and "enable display"
commands. ENABLE decides what to do. */
static void
-enable_disable_display_command (const char *args, int from_tty, int enable)
+enable_disable_display_command (const char *args, int from_tty, bool enable)
{
if (args == NULL)
{
- struct display *d;
-
- ALL_DISPLAYS (d)
+ for (auto &d : all_displays)
d->enabled_p = enable;
return;
}
- map_display_numbers (args, do_enable_disable_display, &enable);
+ map_display_numbers (args,
+ [=] (struct display *d)
+ {
+ d->enabled_p = enable;
+ });
}
/* The "enable display" command. */
static void
enable_display_command (const char *args, int from_tty)
{
- enable_disable_display_command (args, from_tty, 1);
+ enable_disable_display_command (args, from_tty, true);
}
/* The "disable display" command. */
static void
disable_display_command (const char *args, int from_tty)
{
- enable_disable_display_command (args, from_tty, 0);
+ enable_disable_display_command (args, from_tty, false);
}
/* display_chain items point to blocks and expressions. Some expressions in
static void
clear_dangling_display_expressions (struct objfile *objfile)
{
- struct display *d;
struct program_space *pspace;
/* With no symbol file we cannot have a block or expression from it. */
gdb_assert (objfile->pspace == pspace);
}
- for (d = display_chain; d != NULL; d = d->next)
+ for (auto &d : all_displays)
{
if (d->pspace != pspace)
continue;
projects / binutils-gdb.git / commitdiff