lily/bar-check-iterator.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2001--2011  Han-Wen Nienhuys <hanwen@xs4all.nl>
   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 "context.hh"
  21 #include "input.hh"
  22 #include "international.hh"
  23 #include "music.hh"
  24 #include "simple-music-iterator.hh"
  25
  26 /*
  27   Check bar checks. We do this outside the engravers so that you can
  28   race through the score using skipTypesetting to correct durations.
  29 */
  30 class Bar_check_iterator : Simple_music_iterator
  31 {
  32 public:
  33   virtual void process (Moment);
  34   Bar_check_iterator ();
  35   DECLARE_SCHEME_CALLBACK (constructor, ());
  36 };
  37
  38 IMPLEMENT_CTOR_CALLBACK (Bar_check_iterator);
  39
  40 Bar_check_iterator::Bar_check_iterator ()
  41 {
  42 }
  43
  44 void
  45 Bar_check_iterator::process (Moment m)
  46 {
  47   Simple_music_iterator::process (m);
  48   if (!m.to_bool ())
  49     {
  50       Context *tr = get_outlet ();
  51
  52       SCM check = tr->get_property ("ignoreBarChecks");
  53       if (to_boolean (check))
  54         return;
  55
  56       SCM mp = tr->get_property ("measurePosition");
  57       SCM sync = tr->get_property ("barCheckSynchronize");
  58
  59       Moment *where = unsmob_moment (mp);
  60       if (!where)
  61         return;
  62
  63       if (where->main_part_)
  64         {
  65           bool warn = true;
  66           if (to_boolean (sync))
  67             {
  68               SCM mp;
  69               tr = tr->where_defined (ly_symbol2scm ("measurePosition"), &mp);
  70               Moment zero;
  71               tr->set_property ("measurePosition", zero.smobbed_copy ());
  72             }
  73           else
  74             {
  75               SCM lf = tr->get_property ("barCheckLastFail");
  76               if (unsmob_moment (lf)
  77                   && *unsmob_moment (lf) == *where)
  78                 warn = false;
  79               else
  80                 tr->set_property ("barCheckLastFail", mp);
  81             }
  82
  83           if (warn)
  84             get_music ()->origin ()->warning (_f ("barcheck failed at: %s",
  85                                                   where->to_string ()));
  86         }
  87     }
  88 }