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 ()
24 Music_iterator::Music_iterator (Music_iterator const& src)
26 handle_ = *src.handle_.clone ();
27 music_l_ = src.music_l_;
28 music_length_ = src.music_length_;
31 Music_iterator::~Music_iterator ()
39 Music_iterator::report_to_l () const
41 return handle_.report_to_l ();
46 Music_iterator::set_translator (Translator_group *trans)
48 handle_.set_translator (trans);
52 Music_iterator::construct_children ()
57 Music_iterator::pending_moment () const
64 Music_iterator::process (Moment)
69 Music_iterator::ok () const
75 Music_iterator::skip (Moment )
80 Music_iterator::get_music (Moment)const
86 Music_iterator::static_get_iterator_p (Music *m)
88 Music_iterator * p =0;
90 SCM ctor = m->get_mus_property ("iterator-ctor") ;
91 if (unsmob_cxx_function (ctor))
93 Cxx_function f = unsmob_cxx_function (ctor);
95 p = (Music_iterator*) (*f) (SCM_EOL);
97 else if (dynamic_cast<Music_wrapper *> (m))
98 p = new Music_wrapper_iterator;
101 p = new Simple_music_iterator ;
105 p->music_length_ = m->length_mom ();
112 Music_iterator::music_length_mom() const
114 return music_length_;
118 Music_iterator::init_translator (Music *m, Translator_group *report_l)
121 if (Context_specced_music * csm =dynamic_cast<Context_specced_music *> (m))
123 SCM ct = csm->get_mus_property ("context-type");
125 if (gh_string_p (ct))
126 c_type = ly_scm2string (ct);
129 SCM ci = csm->get_mus_property ("context-id");
130 if (gh_string_p (ci))
131 c_id = ly_scm2string (ci);
134 =report_l->find_create_translator_l (c_type, c_id);
140 if (! report_to_l ())
141 set_translator (report_l);
146 Music_iterator::get_iterator_p (Music *m) const
148 Music_iterator*p = static_get_iterator_p (m);
149 p->init_translator (m, report_to_l ());
151 p->construct_children ();
156 Music_iterator::try_music (Music *m) const
158 bool b = report_to_l ()->try_music ( (Music*)m); // ugh
159 Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
161 it = try_music_in_children (m);
166 Music_iterator::try_music_in_children (Music *) const
171 IMPLEMENT_CTOR_CALLBACK(Music_iterator);