2 Simultaneous_music-iterator.cc -- implement Simultaneous_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 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"
16 Simultaneous_music_iterator::Simultaneous_music_iterator ()
18 separate_contexts_b_ = false;
21 Simultaneous_music_iterator::Simultaneous_music_iterator (Simultaneous_music_iterator const& src)
22 : Music_iterator (src)
24 separate_contexts_b_ = src.separate_contexts_b_;
25 for (Cons<Music_iterator> *p = src.children_p_list_.head_; p; p = p->next_)
27 Music_iterator *i = p->car_;
28 children_p_list_.append (new Killing_cons<Music_iterator> (i->clone (), 0));
32 Simultaneous_music_iterator::~Simultaneous_music_iterator ()
34 children_p_list_.junk ();
38 Simultaneous_music_iterator::get_music (Moment m)const
41 for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
43 s = gh_append2 (p->car_->get_music (m), s);
49 Simultaneous_music_iterator::construct_children ()
52 Music_sequence const *sim = dynamic_cast<Music_sequence const*> (music_l ());
54 SCM i = sim->music_list ();
55 for (; gh_pair_p (i); i = ly_cdr (i), j++)
57 Music *mus = unsmob_music (ly_car (i));
58 Music_iterator * mi = static_get_iterator_p (mus);
60 /* if separate_contexts_b_ is set, create a new context with the
61 number number as name */
63 Translator_group * t = (j && separate_contexts_b_)
64 ? report_to_l ()->find_create_translator_l (report_to_l ()->type_str_,
71 mi->init_translator (mus, t);
72 mi->construct_children ();
76 children_p_list_.append (new Killing_cons<Music_iterator> (mi,0));
85 Simultaneous_music_iterator::process (Moment until)
87 for (Cons<Music_iterator> **pp = &children_p_list_.head_; *pp;)
89 Music_iterator * i = (*pp)->car_;
90 if (i->pending_moment () == until)
95 delete children_p_list_.remove_cons (pp);
102 Simultaneous_music_iterator::skip (Moment until)
104 for (Cons<Music_iterator> **pp = &children_p_list_.head_; *pp;)
106 Music_iterator * i = (*pp)->car_;
107 if (i->pending_moment () <= until)
112 delete children_p_list_.remove_cons (pp);
119 Simultaneous_music_iterator::pending_moment () const
122 next.set_infinite (1);
124 for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
125 next = next <? p->car_->pending_moment () ;
132 Simultaneous_music_iterator::ok () const
134 return children_p_list_.head_;
138 Simultaneous_music_iterator::try_music_in_children (Music *m) const
140 Music_iterator * b=0;
141 for (Cons<Music_iterator> *p = children_p_list_.head_; !b && p; p = p->next_)
142 b =p->car_->try_music (m);
148 IMPLEMENT_CTOR_CALLBACK (Simultaneous_music_iterator);