2 music-iterator.cc -- implement Music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 UGH. too many includes.
13 #include "music-iterator.hh"
14 #include "translator-group.hh"
15 #include "music-wrapper.hh"
16 #include "music-wrapper-iterator.hh"
17 #include "simple-music-iterator.hh"
18 #include "context-specced-music.hh"
20 Music_iterator::Music_iterator ()
25 Music_iterator::Music_iterator (Music_iterator const& src)
27 // clone_i_ = src.clone_i_ + 1;
28 handle_ = *src.handle_.clone ();
29 music_l_ = src.music_l_;
30 music_length_ = src.music_length_;
33 Music_iterator::~Music_iterator ()
41 Music_iterator::report_to_l () const
43 return handle_.report_to_l ();
48 Music_iterator::set_translator (Translator_group *trans)
50 handle_.set_translator (trans);
54 Music_iterator::construct_children ()
59 Music_iterator::pending_moment () const
66 Music_iterator::process (Moment)
71 Music_iterator::ok () const
77 Music_iterator::skip (Moment )
82 Music_iterator::get_music (Moment)const
88 Music_iterator::static_get_iterator_p (Music *m)
90 Music_iterator * p =0;
92 SCM ctor = m->get_mus_property ("iterator-ctor") ;
93 if (unsmob_cxx_function (ctor))
95 Cxx_function f = unsmob_cxx_function (ctor);
97 p = (Music_iterator*) (*f) (SCM_EOL);
99 else if (dynamic_cast<Music_wrapper *> (m))
100 p = new Music_wrapper_iterator;
103 p = new Simple_music_iterator ;
107 p->music_length_ = m->length_mom ();
114 Music_iterator::music_length_mom() const
116 return music_length_;
120 Music_iterator::init_translator (Music *m, Translator_group *report_l)
123 if (Context_specced_music * csm =dynamic_cast<Context_specced_music *> (m))
125 SCM ct = csm->get_mus_property ("context-type");
127 if (gh_string_p (ct))
128 c_type = ly_scm2string (ct);
131 SCM ci = csm->get_mus_property ("context-id");
132 if (gh_string_p (ci))
133 c_id = ly_scm2string (ci);
136 =report_l->find_create_translator_l (c_type, c_id);
142 if (! report_to_l ())
143 set_translator (report_l);
148 Music_iterator::get_iterator_p (Music *m) const
150 Music_iterator*p = static_get_iterator_p (m);
151 p->init_translator (m, report_to_l ());
153 p->construct_children ();
158 Music_iterator::try_music (Music *m) const
160 bool b = report_to_l ()->try_music ( (Music*)m); // ugh
161 Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
163 it = try_music_in_children (m);
168 Music_iterator::try_music_in_children (Music *) const
173 IMPLEMENT_CTOR_CALLBACK(Music_iterator);