2 Simultaneous_music-iterator.cc -- implement Simultaneous_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "translator-group.hh"
11 #include "simultaneous-music-iterator.hh"
12 #include "music-list.hh"
13 #include "killing-cons.tcc"
15 Simultaneous_music_iterator::Simultaneous_music_iterator ()
19 Simultaneous_music_iterator::~Simultaneous_music_iterator ()
21 children_p_list_.junk ();
25 Simultaneous_music_iterator::construct_children()
28 Simultaneous_music const *sim = dynamic_cast<Simultaneous_music const*> (music_l_);
30 for (Cons<Music> *i = sim->music_p_list_p_->head_; i; i = i->next_, j++)
32 Music_iterator * mi = get_iterator_p (i->car_);
35 if (sim->translator_type_str_.empty_b ())
36 set_translator (mi->report_to_l()->ancestor_l (0)); // huh?
37 children_p_list_.append (new Killing_cons<Music_iterator> (mi,0));
46 Simultaneous_music_iterator::do_print() const
49 for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
55 Simultaneous_music_iterator::do_process_and_next (Moment until)
57 for (Cons<Music_iterator> **pp = &children_p_list_.head_; *pp; )
59 Music_iterator * i = (*pp)->car_;
60 if (i->next_moment() == until)
62 i->process_and_next (until);
65 delete children_p_list_.remove_cons (pp);
69 Music_iterator::do_process_and_next (until);
76 Simultaneous_music_iterator::next_moment() const
79 next.set_infinite (1);
81 for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
82 next = next <? p->car_->next_moment() ;
89 Simultaneous_music_iterator::ok() const
91 return children_p_list_.head_;