lily/include/property-iterator.hh

   1 /*
   2   property-iterator.hh -- declare Property_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 #ifndef PROPERTY_ITERATOR_HH
  11 #define PROPERTY_ITERATOR_HH
  12
  13 #include "simple-music-iterator.hh"
  14
  15
  16
  17
  18 /**
  19   Iterate a property.
  20  */
  21 class Property_iterator : public Simple_music_iterator
  22 {
  23 public:
  24   VIRTUAL_COPY_CONS (Music_iterator);
  25   DECLARE_SCHEME_CALLBACK(constructor, ());
  26   DECLARE_SCHEME_CALLBACK(once_finalization, (SCM, SCM ));
  27
  28 protected:
  29   virtual void do_quit();
  30   virtual void process (Moment);
  31 };
  32
  33
  34
  35
  36 /**
  37   Iterate a property.
  38  */
  39 class Property_unset_iterator : public Simple_music_iterator
  40 {
  41 public:
  42   VIRTUAL_COPY_CONS (Music_iterator);
  43   DECLARE_SCHEME_CALLBACK(constructor, ());
  44 protected:
  45   virtual void process (Moment);
  46 };
  47
  48 class Push_property_iterator : public Simple_music_iterator
  49 {
  50 public:
  51   VIRTUAL_COPY_CONS (Music_iterator);
  52   DECLARE_SCHEME_CALLBACK(constructor, ());
  53   DECLARE_SCHEME_CALLBACK(once_finalization, (SCM, SCM));
  54 protected:
  55   virtual void process (Moment);
  56   virtual void do_quit();
  57 };
  58
  59 class Pop_property_iterator : public Simple_music_iterator
  60 {
  61 public:
  62   DECLARE_SCHEME_CALLBACK(constructor, ());
  63   VIRTUAL_COPY_CONS (Music_iterator);
  64 protected:
  65   virtual void process (Moment);
  66 };
  67
  68
  69 #endif // PROPERTY_ITERATOR_HH