lily/scheme-listener.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2006--2011 Erik Sandberg  <mandolaerik@gmail.com>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "scheme-listener.hh"
  21
  22 IMPLEMENT_LISTENER (Scheme_listener, call)
  23 void
  24 Scheme_listener::call (SCM ev)
  25 {
  26   scm_call_1 (callback_, ev);
  27 }
  28
  29 IMPLEMENT_SMOBS (Scheme_listener);
  30 IMPLEMENT_DEFAULT_EQUAL_P (Scheme_listener);
  31
  32 Scheme_listener::Scheme_listener (SCM c)
  33 {
  34   callback_ = SCM_EOL;
  35   self_scm_ = SCM_EOL;
  36   smobify_self ();
  37   callback_ = c;
  38 }
  39
  40 SCM
  41 Scheme_listener::mark_smob (SCM obj)
  42 {
  43   Scheme_listener *me = (Scheme_listener *) SCM_CELL_WORD_1 (obj);
  44   return me->callback_;
  45 }
  46
  47 int
  48 Scheme_listener::print_smob (SCM obj, SCM p, scm_print_state*)
  49 {
  50   Scheme_listener *me = (Scheme_listener *) SCM_CELL_WORD_1 (obj);
  51   scm_puts ("#<Scheme_listener ", p);
  52   scm_write (me->callback_, p);
  53   scm_puts (">", p);
  54   return 1;
  55 }
  56
  57 Scheme_listener::~Scheme_listener ()
  58 {
  59 }