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::report_to () const
45 return handle_.report_to ();
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
77 Music_iterator::skip (Moment)
82 Music_iterator::get_pending_events (Moment)const
88 Music_iterator::get_static_get_iterator (Music *m)
90 Music_iterator * p =0;
92 SCM ctor = m->get_mus_property ("iterator-ctor") ;
94 if (gh_procedure_p (ctor))
96 iter = gh_call0 (ctor);
97 p = unsmob_iterator (iter);
101 if (dynamic_cast<Music_wrapper *> (m))
102 p = new Music_wrapper_iterator;
104 p = new Simple_music_iterator;
106 iter = p->self_scm();
107 scm_gc_unprotect_object (iter);
112 p->music_length_ = m->get_length ();
113 p->start_mom_ = m->start_mom ();
119 Music_iterator::music_get_length () const
121 return music_length_;
125 Music_iterator::music_start_mom ()const
131 Music_iterator::init_translator (Music *m, Translator_group *report)
136 set_translator (report);
141 Music_iterator::get_iterator (Music *m) const
143 SCM ip = get_static_get_iterator (m);
144 Music_iterator*p = unsmob_iterator (ip);
146 p->init_translator (m, report_to ());
148 p->construct_children ();
153 TODO: rename to prevent confusion between Translator::try_music and
158 Music_iterator::try_music (Music *m) const
160 bool b = report_to ()->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);
176 Music_iterator::get_music () const
181 /****************************************************************/
183 IMPLEMENT_TYPE_P (Music_iterator, "ly:iterator?");
184 IMPLEMENT_SMOBS(Music_iterator);
185 IMPLEMENT_DEFAULT_EQUAL_P(Music_iterator);
188 Music_iterator::mark_smob (SCM smob)
190 Music_iterator * mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
192 mus->derived_mark ();
194 Careful with GC, although we intend the following as pointers
195 only, we _must_ mark them.
197 if (mus->report_to())
198 scm_gc_mark (mus->report_to()->self_scm());
200 scm_gc_mark (mus->music_->self_scm());
207 Music_iterator::print_smob (SCM sm , SCM port, scm_print_state*)
211 Music_iterator *iter = unsmob_iterator (sm);
212 sprintf (s, "#<%s>", classname (iter));
218 Music_iterator::derived_mark()const
223 Music_iterator::quit ()
230 Music_iterator::do_quit()
235 Music_iterator::run_always ()const