X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspanner-scheme.cc;h=f7517045b16488aa96a6db3a0312e870e2ddd3e9;hb=30f457de4178d3e049336aaf50afe17b3b3a1135;hp=e5a33e0c4b45976ffc7f50907c5a592b25872931;hpb=16cb456cabf477f6d398ff731aa0f10b60913394;p=lilypond.git

diff --git a/lily/spanner-scheme.cc b/lily/spanner-scheme.cc
index e5a33e0c4b..f7517045b1 100644
--- a/lily/spanner-scheme.cc
+++ b/lily/spanner-scheme.cc
@@ -1,34 +1,58 @@
-/* 
-  spanner-scheme.cc -- implement Spanner bindings.
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c) 2007 Han-Wen Nienhuys <hanwen@lilypond.org>
-  
+/*
+  This file is part of LilyPond, the GNU music typesetter.
+
+  Copyright (C) 2007--2012 Han-Wen Nienhuys <hanwen@lilypond.org>
+
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "spanner.hh"
 #include "item.hh"
 
-LY_DEFINE (ly_spanner_get_bound, "ly:spanner-bound",
-	   2, 0, 0, (SCM slur, SCM dir),
-	   "Get one of the bounds of @var{spanner}. @var{dir} is @code{-1} "
-	   "for left, and @code{1} for right.")
+LY_DEFINE (ly_spanner_bound, "ly:spanner-bound",
+           2, 0, 0, (SCM spanner, SCM dir),
+           "Get one of the bounds of @var{spanner}.  @var{dir} is @w{@code{-1}}"
+           " for left, and @code{1} for right.")
 {
-  Spanner *sl = dynamic_cast<Spanner *> (unsmob_grob (slur));
-  SCM_ASSERT_TYPE (sl, slur, SCM_ARG1, __FUNCTION__, "spanner grob");
-  SCM_ASSERT_TYPE (is_direction (dir), slur, SCM_ARG2, __FUNCTION__, "dir");
-  return sl->get_bound (to_dir (dir))->self_scm ();
+  LY_ASSERT_TYPE (unsmob_spanner, spanner, 1);
+  LY_ASSERT_TYPE (is_direction, dir, 2);
+  Item *bound = unsmob_spanner (spanner)->get_bound (to_dir (dir));
+  return bound ? bound->self_scm () : SCM_EOL;
+}
+
+LY_DEFINE (ly_spanner_set_bound_x, "ly:spanner-set-bound!",
+           3, 0, 0, (SCM spanner, SCM dir, SCM item),
+           "Set grob @var{item} as bound in direction @var{dir} for"
+           " @var{spanner}.")
+{
+  LY_ASSERT_TYPE (unsmob_spanner, spanner, 1);
+  LY_ASSERT_TYPE (is_direction, dir, 2);
+  LY_ASSERT_TYPE (unsmob_item, item, 3);
+
+  unsmob_spanner (spanner)->set_bound (to_dir (dir), unsmob_item (item));
+  return SCM_UNSPECIFIED;
 }
 
 /* TODO: maybe we should return a vector -- random access is more
    logical for this list? */
 LY_DEFINE (ly_spanner_broken_into, "ly:spanner-broken-into",
-	   1, 0, 0, (SCM spanner),
-	   "Return broken-into list for @var{spanner}.")
+           1, 0, 0, (SCM spanner),
+           "Return broken-into list for @var{spanner}.")
 {
+  LY_ASSERT_TYPE (unsmob_spanner, spanner, 1);
   Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (spanner));
-  SCM_ASSERT_TYPE (me, spanner, SCM_ARG1, __FUNCTION__, "spanner");
 
   SCM s = SCM_EOL;
   for (vsize i = me->broken_intos_.size (); i--;)
@@ -37,8 +61,8 @@ LY_DEFINE (ly_spanner_broken_into, "ly:spanner-broken-into",
 }
 
 LY_DEFINE (ly_spanner_p, "ly:spanner?",
-	   1, 0, 0, (SCM g),
-	   "Is  @var{g} a spanner object?")
+           1, 0, 0, (SCM g),
+           "Is @var{g} a spanner object?")
 {
   Grob *me = unsmob_grob (g);
   bool b = dynamic_cast<Spanner *> (me);