2 music-iterator.cc -- implement Music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 UGH. too many includes.
15 #include "music-iterator.hh"
16 #include "translator-group.hh"
17 #include "music-wrapper.hh"
18 #include "music-wrapper-iterator.hh"
19 #include "simple-music-iterator.hh"
21 #include "ly-smobs.icc"
23 Music_iterator::Music_iterator ()
29 Music_iterator::Music_iterator (Music_iterator const& src)
31 handle_ = *src.handle_.clone ();
33 music_length_ = src.music_length_;
34 start_mom_ = src.start_mom_;
38 Music_iterator::~Music_iterator ()
43 Music_iterator::get_outlet () const
45 return handle_.get_outlet ();
49 Music_iterator::set_translator (Translator_group *trans)
51 handle_.set_translator (trans);
55 Music_iterator::construct_children ()
60 Music_iterator::pending_moment () const
66 Music_iterator::process (Moment)
71 Music_iterator::ok () const
79 Music_iterator::get_static_get_iterator (Music *m)
81 Music_iterator * p =0;
83 SCM ctor = m->get_mus_property ("iterator-ctor") ;
85 if (gh_procedure_p (ctor))
87 iter = gh_call0 (ctor);
88 p = unsmob_iterator (iter);
92 if (dynamic_cast<Music_wrapper *> (m))
93 p = new Music_wrapper_iterator;
95 p = new Simple_music_iterator;
98 scm_gc_unprotect_object (iter);
103 p->music_length_ = m->get_length ();
104 p->start_mom_ = m->start_mom ();
110 Music_iterator::music_get_length () const
112 return music_length_;
116 Music_iterator::music_start_mom ()const
122 Music_iterator::init_translator (Music *m, Translator_group *report)
127 set_translator (report);
131 Music_iterator::substitute_outlet (Translator_group*f, Translator_group *t)
133 if (get_outlet () == f)
135 derived_substitute (f,t);
139 Music_iterator::derived_substitute (Translator_group*,Translator_group*)
144 Music_iterator::get_iterator (Music *m) const
146 SCM ip = get_static_get_iterator (m);
147 Music_iterator*p = unsmob_iterator (ip);
149 p->init_translator (m, get_outlet ());
151 p->construct_children ();
156 TODO: rename to prevent confusion between Translator::try_music and
161 Music_iterator::try_music (Music *m) const
163 bool b = get_outlet ()->try_music ((Music*)m); // ugh
164 Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
166 it = try_music_in_children (m);
171 Music_iterator::try_music_in_children (Music *) const
176 IMPLEMENT_CTOR_CALLBACK (Music_iterator);
179 Music_iterator::get_music () const
184 /****************************************************************/
186 IMPLEMENT_TYPE_P (Music_iterator, "ly:iterator?");
187 IMPLEMENT_SMOBS(Music_iterator);
188 IMPLEMENT_DEFAULT_EQUAL_P(Music_iterator);
191 Music_iterator::mark_smob (SCM smob)
193 Music_iterator * mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
195 mus->derived_mark ();
197 Careful with GC, although we intend the following as pointers
198 only, we _must_ mark them.
200 if (mus->get_outlet ())
201 scm_gc_mark (mus->get_outlet ()->self_scm());
203 scm_gc_mark (mus->music_->self_scm());
210 Music_iterator::print_smob (SCM sm , SCM port, scm_print_state*)
214 Music_iterator *iter = unsmob_iterator (sm);
215 sprintf (s, "#<%s>", classname (iter));
221 Music_iterator::derived_mark()const
226 Music_iterator::quit ()
233 Music_iterator::do_quit()
238 Music_iterator::run_always ()const