/* TUI Interpreter definitions for GDB, the GNU debugger.
- Copyright (C) 2003, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2003-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include "tui/tui-win.h"
#include "tui/tui.h"
#include "tui/tui-io.h"
-#include "exceptions.h"
+#include "infrun.h"
+#include "observer.h"
+
+static struct ui_out *tui_ui_out (struct interp *self);
/* Set to 1 when the TUI mode must be activated when we first start
gdb. */
static int tui_start_enabled = 0;
+/* The TUI interpreter. */
+static struct interp *tui_interp;
+
/* Cleanup the tui before exiting. */
static void
tui_disable ();
}
-/* True if TUI is the top-level interpreter. */
-static int tui_is_toplevel = 0;
+/* Observers for several run control events. If the interpreter is
+ quiet (i.e., another interpreter is being run with
+ interpreter-exec), print nothing. */
+
+/* Observer for the normal_stop notification. */
+
+static void
+tui_on_normal_stop (struct bpstats *bs, int print_frame)
+{
+ if (!interp_quiet_p (tui_interp))
+ {
+ if (print_frame)
+ print_stop_event (tui_ui_out (tui_interp));
+ }
+}
+
+/* Observer for the signal_received notification. */
+
+static void
+tui_on_signal_received (enum gdb_signal siggnal)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_signal_received_reason (tui_ui_out (tui_interp), siggnal);
+}
+
+/* Observer for the end_stepping_range notification. */
+
+static void
+tui_on_end_stepping_range (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_end_stepping_range_reason (tui_ui_out (tui_interp));
+}
+
+/* Observer for the signal_exited notification. */
+
+static void
+tui_on_signal_exited (enum gdb_signal siggnal)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_signal_exited_reason (tui_ui_out (tui_interp), siggnal);
+}
+
+/* Observer for the exited notification. */
+
+static void
+tui_on_exited (int exitstatus)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_exited_reason (tui_ui_out (tui_interp), exitstatus);
+}
+
+/* Observer for the no_history notification. */
+
+static void
+tui_on_no_history (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ print_no_history_reason (tui_ui_out (tui_interp));
+}
+
+/* Observer for the sync_execution_done notification. */
+
+static void
+tui_on_sync_execution_done (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ display_gdb_prompt (NULL);
+}
+
+/* Observer for the command_error notification. */
+
+static void
+tui_on_command_error (void)
+{
+ if (!interp_quiet_p (tui_interp))
+ display_gdb_prompt (NULL);
+}
/* These implement the TUI interpreter. */
static void *
-tui_init (int top_level)
+tui_init (struct interp *self, int top_level)
{
- tui_is_toplevel = top_level;
-
/* Install exit handler to leave the screen in a good shape. */
atexit (tui_exit);
if (ui_file_isatty (gdb_stdout))
tui_initialize_readline ();
- return NULL;
-}
-
-/* True if enabling the TUI is allowed. Example, if the top level
- interpreter is MI, enabling curses will certainly lose. */
+ /* If changing this, remember to update cli-interp.c as well. */
+ observer_attach_normal_stop (tui_on_normal_stop);
+ observer_attach_signal_received (tui_on_signal_received);
+ observer_attach_end_stepping_range (tui_on_end_stepping_range);
+ observer_attach_signal_exited (tui_on_signal_exited);
+ observer_attach_exited (tui_on_exited);
+ observer_attach_no_history (tui_on_no_history);
+ observer_attach_sync_execution_done (tui_on_sync_execution_done);
+ observer_attach_command_error (tui_on_command_error);
-int
-tui_allowed_p (void)
-{
- /* Only if TUI is the top level interpreter. Also don't try to
- setup curses (and print funny control characters) if we're not
- outputting to a terminal. */
- return tui_is_toplevel && ui_file_isatty (gdb_stdout);
+ return NULL;
}
static int
return 1;
}
-/* Display the prompt if we are silent. */
-
-static int
-tui_display_prompt_p (void *data)
+static struct ui_out *
+tui_ui_out (struct interp *self)
{
- if (interp_quiet_p (NULL))
- return 0;
+ if (tui_active)
+ return tui_out;
else
- return 1;
+ return tui_old_uiout;
}
static struct gdb_exception
internal_error (__FILE__, __LINE__, _("tui_exec called"));
}
-
-/* Initialize all the necessary variables, start the event loop,
- register readline, and stdin, start the loop. */
-
-static void
-tui_command_loop (void *data)
-{
- /* If we are using readline, set things up and display the first
- prompt, otherwise just print the prompt. */
- if (async_command_editing_p)
- {
- int length;
- char *a_prompt;
- char *gdb_prompt = get_prompt ();
-
- /* Tell readline what the prompt to display is and what function
- it will need to call after a whole line is read. This also
- displays the first prompt. */
- length = strlen (PREFIX (0))
- + strlen (gdb_prompt) + strlen (SUFFIX (0)) + 1;
- a_prompt = (char *) alloca (length);
- strcpy (a_prompt, PREFIX (0));
- strcat (a_prompt, gdb_prompt);
- strcat (a_prompt, SUFFIX (0));
- rl_callback_handler_install (a_prompt, input_handler);
- }
- else
- display_gdb_prompt (0);
-
- /* Loop until there is nothing to do. This is the entry point to the
- event loop engine. gdb_do_one_event, called via catch_errors()
- will process one event for each invocation. It blocks waits for
- an event and then processes it. >0 when an event is processed, 0
- when catch_errors() caught an error and <0 when there are no
- longer any event sources registered. */
- while (1)
- {
- int result = catch_errors (gdb_do_one_event, 0, "", RETURN_MASK_ALL);
- if (result < 0)
- break;
-
- /* Update gdb output according to TUI mode. Since catch_errors
- preserves the uiout from changing, this must be done at top
- level of event loop. */
- if (tui_active)
- uiout = tui_out;
- else
- uiout = tui_old_uiout;
-
- if (result == 0)
- {
- /* If any exception escaped to here, we better enable
- stdin. Otherwise, any command that calls async_disable_stdin,
- and then throws, will leave stdin inoperable. */
- async_enable_stdin ();
- /* FIXME: this should really be a call to a hook that is
- interface specific, because interfaces can display the
- prompt in their own way. */
- display_gdb_prompt (0);
- /* This call looks bizarre, but it is required. If the user
- entered a command that caused an error,
- after_char_processing_hook won't be called from
- rl_callback_read_char_wrapper. Using a cleanup there
- won't work, since we want this function to be called
- after a new prompt is printed. */
- if (after_char_processing_hook)
- (*after_char_processing_hook) ();
- /* Maybe better to set a flag to be checked somewhere as to
- whether display the prompt or not. */
- }
- }
-
- /* We are done with the event loop. There are no more event sources
- to listen to. So we exit GDB. */
- return;
-}
-
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_tui_interp;
tui_resume,
tui_suspend,
tui_exec,
- tui_display_prompt_p,
- tui_command_loop,
+ tui_ui_out,
+ NULL,
+ cli_command_loop
};
/* Create a default uiout builder for the TUI. */
- tui_out = tui_out_new (gdb_stdout);
- interp_add (interp_new (INTERP_TUI, NULL, tui_out, &procs));
+ tui_interp = interp_new (INTERP_TUI, &procs);
+ interp_add (tui_interp);
if (interpreter_p && strcmp (interpreter_p, INTERP_TUI) == 0)
tui_start_enabled = 1;
projects / deliverable / binutils-gdb.git / blobdiff