catch GUILE errors

[lilypond.git] / lily / chord-tremolo-iterator.cc

diff --git a/lily/chord-tremolo-iterator.cc b/lily/chord-tremolo-iterator.cc
index c74c8be464f778777232f29fe483643c311abfa6..7cec33c3026daaa5d33fbb5b0fd942e1a9291988 100644 (file)
--- a/lily/chord-tremolo-iterator.cc
+++ b/lily/chord-tremolo-iterator.cc
@@ -3,74 +3,80 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 
 /*
-  this is culled from various other iterators, but sharing code by subclassing proved to be too difficult.
+  this is culled from various other iterators, but sharing code by
+  subclassing proved to be too difficult.
  */
 
+#include "input.hh"
 #include "chord-tremolo-iterator.hh"
 #include "repeated-music.hh"
 
 void
 Chord_tremolo_iterator::construct_children ()
 {
-  Repeated_music const* rep = dynamic_cast<Repeated_music const*> (music_l_);
-  factor_  = Moment (1, rep->repeats_i_);
-  child_iter_p_ = get_iterator_p (rep->repeat_body_p_);
+  Repeated_music * rep = dynamic_cast<Repeated_music*> (get_music ());
+  factor_  = Moment (Rational(1, 1));
+  child_iter_ = get_iterator (rep->body ());
 }
 
-Chord_tremolo_iterator::Chord_tremolo_iterator()
+Chord_tremolo_iterator::Chord_tremolo_iterator ()
 {
   factor_ = 1;
-  child_iter_p_ = 0;
+  child_iter_ = 0;
+}
+
+Chord_tremolo_iterator::Chord_tremolo_iterator (Chord_tremolo_iterator const &src)
+  : Music_iterator (src)
+{
+  factor_ = src.factor_;
+  child_iter_ = src.child_iter_ ? src.child_iter_->clone () : 0; 
 }
 
 void
-Chord_tremolo_iterator::do_process_and_next (Moment m)
+Chord_tremolo_iterator::process (Moment m)
 {
-  if (!m)
+  if (!m.to_bool () )
     {
-      Music_iterator *yeah = try_music (music_l_);
+      Music_iterator *yeah = try_music (get_music ());
       if (yeah)
-       set_translator (yeah->report_to_l ());
+       set_translator (yeah->report_to ());
       else
-       music_l_->warning ( _("no one to print a tremolos"));
+       get_music ()->origin ()->warning (_ ("no one to print a tremolos"));
     }
 
-  child_iter_p_->process_and_next  (factor_ * m);
+  child_iter_->process (factor_ * m);
 }
 
-
 Moment
-Chord_tremolo_iterator::next_moment () const
+Chord_tremolo_iterator::pending_moment () const
 {
-  return child_iter_p_->next_moment () / factor_;
+  return child_iter_->pending_moment () / factor_;
 }
 
 bool
 Chord_tremolo_iterator::ok () const
 {
-  return child_iter_p_ && child_iter_p_->ok();
+  return child_iter_ && child_iter_->ok ();
 }
 
 Chord_tremolo_iterator::~Chord_tremolo_iterator ()
 {
-  delete child_iter_p_;
+  delete child_iter_;
 }
 
 Music_iterator*
-Chord_tremolo_iterator::try_music_in_children (Music const *m) const
+Chord_tremolo_iterator::try_music_in_children (Music  *m) const
 {
-  return child_iter_p_->try_music (m);
+  return child_iter_->try_music (m);
 }
 
 
-void
-Chord_tremolo_iterator::do_print () const
-{
-  child_iter_p_->print  ();
-}
+
+IMPLEMENT_CTOR_CALLBACK (Chord_tremolo_iterator);
+