[2/3] gdb: switch "set language" to getter/setter
Commit Message
The `language` global variable is mostly a scratch variable used for the
setting. The source of truth is really current_language and
language_mode (auto vs manual), which are set by the
set_language_command callback.
Switch the setting to use the add_setshow_enum_cmd overload that takes a
value getter and setter.
Change-Id: Ief5b2f93fd7337eed7ec96023639ae3dfe62250b
---
gdb/language.c | 28 +++++++++++++++++++---------
1 file changed, 19 insertions(+), 9 deletions(-)
@@ -93,7 +93,6 @@ const struct language_defn *language_defn::languages[nr_languages];
/* The current values of the "set language/range/case-sensitive" enum
commands. */
-static const char *language;
static const char *range;
static const char *case_sensitive;
@@ -135,10 +134,10 @@ show_language_command (struct ui_file *file, int from_tty,
}
}
-/* Set command. Change the current working language. */
+/* Set callback for the "set/show language" setting. */
+
static void
-set_language_command (const char *ignore,
- int from_tty, struct cmd_list_element *c)
+set_language (const char *language)
{
enum language flang = language_unknown;
@@ -192,6 +191,17 @@ set_language_command (const char *ignore,
language);
}
+/* Get callback for the "set/show language" setting. */
+
+static const char *
+get_language ()
+{
+ if (language_mode == language_mode_auto)
+ return "auto";
+
+ return current_language->name ();
+}
+
/* Show command. Display a warning if the range setting does
not match the current language. */
static void
@@ -372,7 +382,7 @@ language_info ()
return;
expected_language = current_language;
- gdb_printf (_("Current language: %s\n"), language);
+ gdb_printf (_("Current language: %s\n"), get_language ());
show_language_command (gdb_stdout, 1, NULL, NULL);
}
@@ -465,8 +475,7 @@ add_set_language_command ()
/* Display "auto", "local" and "unknown" first, and then the rest,
alpha sorted. */
const char **language_names_p = language_names;
- language = language_def (language_auto)->name ();
- *language_names_p++ = language;
+ *language_names_p++ = language_def (language_auto)->name ();;
*language_names_p++ = "local";
*language_names_p++ = language_def (language_unknown)->name ();
const char **sort_begin = language_names_p;
@@ -509,10 +518,11 @@ add_set_language_command ()
add_setshow_enum_cmd ("language", class_support,
language_names,
- &language,
doc.c_str (),
_("Show the current source language."),
- NULL, set_language_command,
+ NULL,
+ set_language,
+ get_language,
show_language_command,
&setlist, &showlist);
}