Minor cleanup for terminal setup.

* termhooks.h (create_terminal): Adjust prototype.
* terminal.c (create_terminal): Pass output method and RIF as args.
(init_initial_terminal):
* nsterm.m (ns_create_terminal):
* term.c (init_tty):
* w32term.c (w32_create_terminal):
* xterm.c (x_create_terminal): Adjust users.
Avoid redundant NULL initializers and add comments.

7 files changed, 29 insertions, 59 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 587efbd79f6..e78a32c26ca 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,15 @@
+2014-05-14  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Minor cleanup for terminal setup.
+        * termhooks.h (create_terminal): Adjust prototype.
+        * terminal.c (create_terminal): Pass output method and RIF as args.
+        (init_initial_terminal):
+        * nsterm.m (ns_create_terminal):
+        * term.c (init_tty):
+        * w32term.c (w32_create_terminal):
+        * xterm.c (x_create_terminal): Adjust users.
+        Avoid redundant NULL initializers and add comments.
+
 2014-05-13  Paul Eggert  <eggert@cs.ucla.edu>
 
         * keyboard.c (Qdeactivate_mark): Now static.
diff --git a/src/nsterm.m b/src/nsterm.m
index 842ff194c40..17014b97121 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -4153,38 +4153,28 @@ ns_create_terminal (struct ns_display_info *dpyinfo)
 
   NSTRACE (ns_create_terminal);
 
-  terminal = create_terminal ();
+  terminal = create_terminal (output_ns, &ns_redisplay_interface);
 
-  terminal->type = output_ns;
   terminal->display_info.ns = dpyinfo;
   dpyinfo->terminal = terminal;
 
-  terminal->rif = &ns_redisplay_interface;
-
   terminal->clear_frame_hook = ns_clear_frame;
-  terminal->ins_del_lines_hook = 0; /* XXX vestigial? */
-  terminal->delete_glyphs_hook = 0; /* XXX vestigial? */
   terminal->ring_bell_hook = ns_ring_bell;
-  terminal->reset_terminal_modes_hook = NULL;
-  terminal->set_terminal_modes_hook = NULL;
   terminal->update_begin_hook = ns_update_begin;
   terminal->update_end_hook = ns_update_end;
-  terminal->set_terminal_window_hook = NULL; /* XXX vestigial? */
   terminal->read_socket_hook = ns_read_socket;
   terminal->frame_up_to_date_hook = ns_frame_up_to_date;
   terminal->mouse_position_hook = ns_mouse_position;
   terminal->frame_rehighlight_hook = ns_frame_rehighlight;
   terminal->frame_raise_lower_hook = ns_frame_raise_lower;
-
   terminal->fullscreen_hook = ns_fullscreen_hook;
-
   terminal->set_vertical_scroll_bar_hook = ns_set_vertical_scroll_bar;
   terminal->condemn_scroll_bars_hook = ns_condemn_scroll_bars;
   terminal->redeem_scroll_bar_hook = ns_redeem_scroll_bar;
   terminal->judge_scroll_bars_hook = ns_judge_scroll_bars;
-
   terminal->delete_frame_hook = x_destroy_window;
   terminal->delete_terminal_hook = ns_delete_terminal;
+  /* Other hooks are NULL by default.  */
 
   return terminal;
 }
diff --git a/src/term.c b/src/term.c
index 8ea3e42dae6..379c94e54a1 100644
--- a/src/term.c
+++ b/src/term.c
@@ -3940,43 +3940,24 @@ clear_tty_hooks (struct terminal *terminal)
 static void
 set_tty_hooks (struct terminal *terminal)
 {
-  terminal->rif = 0; /* ttys don't support window-based redisplay. */
-
   terminal->cursor_to_hook = &tty_cursor_to;
   terminal->raw_cursor_to_hook = &tty_raw_cursor_to;
-
   terminal->clear_to_end_hook = &tty_clear_to_end;
   terminal->clear_frame_hook = &tty_clear_frame;
   terminal->clear_end_of_line_hook = &tty_clear_end_of_line;
-
   terminal->ins_del_lines_hook = &tty_ins_del_lines;
-
   terminal->insert_glyphs_hook = &tty_insert_glyphs;
   terminal->write_glyphs_hook = &tty_write_glyphs;
   terminal->delete_glyphs_hook = &tty_delete_glyphs;
-
   terminal->ring_bell_hook = &tty_ring_bell;
-
   terminal->reset_terminal_modes_hook = &tty_reset_terminal_modes;
   terminal->set_terminal_modes_hook = &tty_set_terminal_modes;
-  terminal->update_begin_hook = 0; /* Not needed. */
   terminal->update_end_hook = &tty_update_end;
   terminal->set_terminal_window_hook = &tty_set_terminal_window;
-
-  terminal->mouse_position_hook = 0; /* Not needed. */
-  terminal->frame_rehighlight_hook = 0; /* Not needed. */
-  terminal->frame_raise_lower_hook = 0; /* Not needed. */
-
-  terminal->set_vertical_scroll_bar_hook = 0; /* Not needed. */
-  terminal->condemn_scroll_bars_hook = 0; /* Not needed. */
-  terminal->redeem_scroll_bar_hook = 0; /* Not needed. */
-  terminal->judge_scroll_bars_hook = 0; /* Not needed. */
-
   terminal->read_socket_hook = &tty_read_avail_input; /* keyboard.c */
-  terminal->frame_up_to_date_hook = 0; /* Not needed. */
-
   terminal->delete_frame_hook = &tty_free_frame_resources;
   terminal->delete_terminal_hook = &delete_tty;
+  /* Other hooks are NULL by default.  */
 }
 
 /* If FD is the controlling terminal, drop it.  */
@@ -4040,7 +4021,7 @@ init_tty (const char *name, const char *terminal_type, bool must_succeed)
   if (terminal)
     return terminal;
 
-  terminal = create_terminal ();
+  terminal = create_terminal (output_termcap, NULL);
 #ifdef MSDOS
   if (been_here > 0)
     maybe_fatal (0, 0, "Attempt to create another terminal %s", "",
@@ -4054,7 +4035,6 @@ init_tty (const char *name, const char *terminal_type, bool must_succeed)
   tty->next = tty_list;
   tty_list = tty;
 
-  terminal->type = output_termcap;
   terminal->display_info.tty = tty;
   tty->terminal = terminal;
 
diff --git a/src/termhooks.h b/src/termhooks.h
index 708351da83d..207b8ccbc3c 100644
--- a/src/termhooks.h
+++ b/src/termhooks.h
@@ -637,7 +637,8 @@ extern struct terminal *terminal_list;
 #endif
 
 extern struct terminal *get_terminal (Lisp_Object terminal, bool);
-extern struct terminal *create_terminal (void);
+extern struct terminal *create_terminal (enum output_method,
+                                         struct redisplay_interface *);
 extern void delete_terminal (struct terminal *);
 
 /* The initial terminal device, created by initial_term_init.  */
diff --git a/src/terminal.c b/src/terminal.c
index d0a38b97bb4..23455262cb3 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -224,19 +224,19 @@ get_terminal (Lisp_Object terminal, bool throw)
   return result;
 }
 
-
-
-/* Create a new terminal object and add it to the terminal list. */
+/* Create a new terminal object of TYPE and add it to the terminal list.  RIF
+   may be NULL if this terminal type doesn't support window-based redisplay.  */
 
 struct terminal *
-create_terminal (void)
+create_terminal (enum output_method type, struct redisplay_interface *rif)
 {
   struct terminal *terminal = allocate_terminal ();
   Lisp_Object terminal_coding, keyboard_coding;
 
   terminal->next_terminal = terminal_list;
   terminal_list = terminal;
-
+  terminal->type = type;
+  terminal->rif = rif;
   terminal->id = next_terminal_id++;
 
   terminal->keyboard_coding = xmalloc (sizeof (struct coding_system));
@@ -519,13 +519,12 @@ init_initial_terminal (void)
   if (initialized || terminal_list || tty_list)
     emacs_abort ();
 
-  initial_terminal = create_terminal ();
-  initial_terminal->type = output_initial;
+  initial_terminal = create_terminal (output_initial, NULL);
   initial_terminal->name = xstrdup ("initial_terminal");
   initial_terminal->kboard = initial_kboard;
   initial_terminal->delete_terminal_hook = &delete_initial_terminal;
   initial_terminal->delete_frame_hook = &initial_free_frame_resources;
-  /* All other hooks are NULL. */
+  /* Other hooks are NULL by default.  */
 
   return initial_terminal;
 }
diff --git a/src/w32term.c b/src/w32term.c
index 3aabf92357a..aa65af4afd3 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -6272,9 +6272,8 @@ w32_create_terminal (struct w32_display_info *dpyinfo)
 {
   struct terminal *terminal;
 
-  terminal = create_terminal ();
+  terminal = create_terminal (output_w32, &w32_redisplay_interface);
 
-  terminal->type = output_w32;
   terminal->display_info.w32 = dpyinfo;
   dpyinfo->terminal = terminal;
 
@@ -6284,11 +6283,8 @@ w32_create_terminal (struct w32_display_info *dpyinfo)
   terminal->ins_del_lines_hook = x_ins_del_lines;
   terminal->delete_glyphs_hook = x_delete_glyphs;
   terminal->ring_bell_hook = w32_ring_bell;
-  terminal->reset_terminal_modes_hook = NULL;
-  terminal->set_terminal_modes_hook = NULL;
   terminal->update_begin_hook = x_update_begin;
   terminal->update_end_hook = x_update_end;
-  terminal->set_terminal_window_hook = NULL;
   terminal->read_socket_hook = w32_read_socket;
   terminal->frame_up_to_date_hook = w32_frame_up_to_date;
   terminal->mouse_position_hook = w32_mouse_position;
@@ -6299,11 +6295,9 @@ w32_create_terminal (struct w32_display_info *dpyinfo)
   terminal->condemn_scroll_bars_hook = w32_condemn_scroll_bars;
   terminal->redeem_scroll_bar_hook = w32_redeem_scroll_bar;
   terminal->judge_scroll_bars_hook = w32_judge_scroll_bars;
-
   terminal->delete_frame_hook = x_destroy_window;
   terminal->delete_terminal_hook = x_delete_terminal;
-
-  terminal->rif = &w32_redisplay_interface;
+  /* Other hooks are NULL by default.  */
 
   /* We don't yet support separate terminals on W32, so don't try to share
      keyboards between virtual terminals that are on the same physical
diff --git a/src/xterm.c b/src/xterm.c
index 5c21bfae144..0693d101f16 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -10526,9 +10526,8 @@ x_create_terminal (struct x_display_info *dpyinfo)
 {
   struct terminal *terminal;
 
-  terminal = create_terminal ();
+  terminal = create_terminal (output_x_window, &x_redisplay_interface);
 
-  terminal->type = output_x_window;
   terminal->display_info.x = dpyinfo;
   dpyinfo->terminal = terminal;
 
@@ -10539,11 +10538,8 @@ x_create_terminal (struct x_display_info *dpyinfo)
   terminal->delete_glyphs_hook = x_delete_glyphs;
   terminal->ring_bell_hook = XTring_bell;
   terminal->toggle_invisible_pointer_hook = XTtoggle_invisible_pointer;
-  terminal->reset_terminal_modes_hook = NULL;
-  terminal->set_terminal_modes_hook = NULL;
   terminal->update_begin_hook = x_update_begin;
   terminal->update_end_hook = x_update_end;
-  terminal->set_terminal_window_hook = NULL;
   terminal->read_socket_hook = XTread_socket;
   terminal->frame_up_to_date_hook = XTframe_up_to_date;
   terminal->mouse_position_hook = XTmouse_position;
@@ -10554,11 +10550,9 @@ x_create_terminal (struct x_display_info *dpyinfo)
   terminal->condemn_scroll_bars_hook = XTcondemn_scroll_bars;
   terminal->redeem_scroll_bar_hook = XTredeem_scroll_bar;
   terminal->judge_scroll_bars_hook = XTjudge_scroll_bars;
-
   terminal->delete_frame_hook = x_destroy_window;
   terminal->delete_terminal_hook = x_delete_terminal;
-
-  terminal->rif = &x_redisplay_interface;
+  /* Other hooks are NULL by default.  */
 
   return terminal;
 }