2 music-iterator.cc -- implement Music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 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_;
29 start_mom_ = src.start_mom_;
32 Music_iterator::~Music_iterator ()
40 Music_iterator::report_to_l () const
42 return handle_.report_to_l ();
47 Music_iterator::set_translator (Translator_group *trans)
49 handle_.set_translator (trans);
53 Music_iterator::construct_children ()
58 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 ;
106 p->music_length_ = m->length_mom ();
107 p->start_mom_ = m->start_mom ();
113 Music_iterator::music_length_mom () const
115 return music_length_;
120 Music_iterator::music_start_mom ()const
126 Music_iterator::init_translator (Music *m, Translator_group *report_l)
130 if (Context_specced_music * csm =dynamic_cast<Context_specced_music *> (m))
132 SCM ct = csm->get_mus_property ("context-type");
134 if (gh_string_p (ct))
135 c_type = ly_scm2string (ct);
138 SCM ci = csm->get_mus_property ("context-id");
139 if (gh_string_p (ci))
140 c_id = ly_scm2string (ci);
143 =report_l->find_create_translator_l (c_type, c_id);
149 if (! report_to_l ())
150 set_translator (report_l);
155 Music_iterator::get_iterator_p (Music *m) const
157 Music_iterator*p = static_get_iterator_p (m);
158 p->init_translator (m, report_to_l ());
160 p->construct_children ();
165 TODO: rename to prevent confusion between Translator::try_music and
171 Music_iterator::try_music (Music *m) const
173 bool b = report_to_l ()->try_music ((Music*)m); // ugh
174 Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
176 it = try_music_in_children (m);
181 Music_iterator::try_music_in_children (Music *) const
186 IMPLEMENT_CTOR_CALLBACK (Music_iterator);
189 Music_iterator::music_l () const