lily/include/property-iterator.hh

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1997--2010 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 #ifndef PROPERTY_ITERATOR_HH
  21 #define PROPERTY_ITERATOR_HH
  22
  23 #include "simple-music-iterator.hh"
  24
  25 /**
  26    Iterate a property.
  27 */
  28 class Property_iterator : public Simple_music_iterator
  29 {
  30 public:
  31   DECLARE_SCHEME_CALLBACK (constructor, ());
  32   DECLARE_SCHEME_CALLBACK (once_finalization, (SCM, SCM));
  33   DECLARE_CLASSNAME(Property_iterator);
  34
  35 protected:
  36   virtual void do_quit ();
  37   virtual void process (Moment);
  38 };
  39
  40 /**
  41    Iterate a property.
  42 */
  43 class Property_unset_iterator : public Simple_music_iterator
  44 {
  45 public:
  46   DECLARE_SCHEME_CALLBACK (constructor, ());
  47   DECLARE_CLASSNAME(Property_unset_iterator);
  48 protected:
  49   virtual void process (Moment);
  50 };
  51
  52 class Push_property_iterator : public Simple_music_iterator
  53 {
  54 public:
  55   DECLARE_SCHEME_CALLBACK (constructor, ());
  56   DECLARE_SCHEME_CALLBACK (once_finalization, (SCM, SCM));
  57   DECLARE_CLASSNAME(Push_property_iterator);
  58 protected:
  59   virtual void process (Moment);
  60   virtual void do_quit ();
  61 };
  62
  63 class Pop_property_iterator : public Simple_music_iterator
  64 {
  65 public:
  66   DECLARE_SCHEME_CALLBACK (constructor, ());
  67   DECLARE_CLASSNAME(Pop_property_iterator);
  68 protected:
  69   virtual void process (Moment);
  70 };
  71
  72 #endif // PROPERTY_ITERATOR_HH