2 repeated-music-iterator.cc -- implement Folded_repeat_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 Folded repeats are a stupid idea at this point, so we refrain from
13 implementing get_pending_events () and skip ().
16 #include "folded-repeat-iterator.hh"
17 #include "repeated-music.hh"
18 #include "music-list.hh"
19 #include "simultaneous-music-iterator.hh"
20 #include "translator-group.hh"
22 Folded_repeat_iterator::Folded_repeat_iterator ()
25 alternative_iter_ = 0;
29 Folded_repeat_iterator::ok () const
31 return main_iter_ || alternative_iter_;
34 Folded_repeat_iterator::~Folded_repeat_iterator ()
37 delete alternative_iter_;
40 Folded_repeat_iterator::Folded_repeat_iterator (Folded_repeat_iterator const &src)
41 : Music_iterator (src)
43 main_iter_ = src.main_iter_ ? src.main_iter_->clone () : 0;
44 alternative_iter_ = src.alternative_iter_ ? src.alternative_iter_->clone () : 0;
45 main_length_mom_ = src.main_length_mom_;
49 Folded_repeat_iterator::pending_moment () const
53 return main_iter_->pending_moment ();
56 return main_length_mom_ + alternative_iter_->pending_moment ();
60 Folded_repeat_iterator::construct_children ()
62 Repeated_music * mus = dynamic_cast<Repeated_music*> (get_music ());
63 main_iter_ = get_iterator (mus->body ());
64 if (!main_iter_->ok ())
72 Folded_repeat_iterator::process (Moment m)
76 bool success = try_music (get_music ());
78 get_music ()->origin ()->warning (_ ("no one to print a repeat brace"));
83 main_iter_->process (m);
84 if (!main_iter_->ok ())
88 if (!main_iter_ && !alternative_iter_)
93 if (alternative_iter_)
95 alternative_iter_->process (m - main_length_mom_);
96 if (!alternative_iter_->ok ())
98 delete alternative_iter_;
105 Folded_repeat_iterator::leave_body ()
107 Repeated_music * mus = dynamic_cast<Repeated_music *> (get_music ());
110 main_length_mom_ += mus->body ()->length_mom ();
114 Folded_repeat_iterator::enter_alternative ()
116 Repeated_music * mus = dynamic_cast<Repeated_music *> (get_music ());
117 if (mus->alternatives ())
119 Simultaneous_music_iterator * s = new Simultaneous_music_iterator;
120 s->separate_contexts_b_ = true;
121 s->init_translator (mus, report_to ());
123 alternative_iter_ = s;
124 alternative_iter_->construct_children ();
130 Folded_repeat_iterator::try_music_in_children (Music * m) const
134 return main_iter_->try_music (m);
136 if (alternative_iter_)
137 return alternative_iter_->try_music (m);
141 IMPLEMENT_CTOR_CALLBACK (Folded_repeat_iterator);