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)
34 Music_iterator::~Music_iterator ()
39 Music_iterator::get_outlet () const
41 return handle_.get_outlet ();
45 Music_iterator::set_translator (Translator_group *trans)
47 handle_.set_translator (trans);
51 Music_iterator::construct_children ()
56 Music_iterator::pending_moment () const
62 Music_iterator::process (Moment)
67 Music_iterator::ok () const
75 Music_iterator::get_static_get_iterator (Music *m)
77 Music_iterator * p =0;
79 SCM ctor = m->get_mus_property ("iterator-ctor") ;
81 if (gh_procedure_p (ctor))
83 iter = gh_call0 (ctor);
84 p = unsmob_iterator (iter);
88 if (dynamic_cast<Music_wrapper *> (m))
89 p = new Music_wrapper_iterator;
91 p = new Simple_music_iterator;
94 scm_gc_unprotect_object (iter);
99 p->music_length_ = m->get_length ();
100 p->start_mom_ = m->start_mom ();
106 Music_iterator::music_get_length () const
108 return music_length_;
112 Music_iterator::music_start_mom ()const
118 Music_iterator::init_translator (Music *m, Translator_group *report)
123 set_translator (report);
127 Music_iterator::substitute_outlet (Translator_group*f, Translator_group *t)
129 if (get_outlet () == f)
131 derived_substitute (f,t);
135 Music_iterator::derived_substitute (Translator_group*,Translator_group*)
140 Music_iterator::get_iterator (Music *m) const
142 SCM ip = get_static_get_iterator (m);
143 Music_iterator*p = unsmob_iterator (ip);
145 p->init_translator (m, get_outlet ());
147 p->construct_children ();
152 TODO: rename to prevent confusion between Translator::try_music and
157 Music_iterator::try_music (Music *m) const
159 bool b = get_outlet ()->try_music ((Music*)m); // ugh
160 Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
162 it = try_music_in_children (m);
167 Music_iterator::try_music_in_children (Music *) const
172 IMPLEMENT_CTOR_CALLBACK (Music_iterator);
175 Music_iterator::get_music () const
180 /****************************************************************/
182 IMPLEMENT_TYPE_P (Music_iterator, "ly:iterator?");
183 IMPLEMENT_SMOBS(Music_iterator);
184 IMPLEMENT_DEFAULT_EQUAL_P(Music_iterator);
187 Music_iterator::mark_smob (SCM smob)
189 Music_iterator * mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
191 mus->derived_mark ();
193 Careful with GC, although we intend the following as pointers
194 only, we _must_ mark them.
196 if (mus->get_outlet ())
197 scm_gc_mark (mus->get_outlet ()->self_scm());
199 scm_gc_mark (mus->music_->self_scm());
206 Music_iterator::print_smob (SCM sm , SCM port, scm_print_state*)
210 Music_iterator *iter = unsmob_iterator (sm);
211 sprintf (s, "#<%s>", classname (iter));
217 Music_iterator::derived_mark()const
222 Music_iterator::quit ()
229 Music_iterator::do_quit()
234 Music_iterator::run_always ()const