2 music-iterator.cc -- implement {Music,Chord,Voice}_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
9 #include "music-list.hh"
10 #include "music-iterator.hh"
11 #include "translator.hh"
16 IMPLEMENT_IS_TYPE_B(Music_iterator);
18 Chord_iterator::~Chord_iterator()
23 Music_iterator::do_print()const
29 Music_iterator::print() const
34 mtor << name() << "{";
35 mtor << "report to " <<
36 report_to_l() << " (" << report_to_l()->name() << ")\n";
37 mtor << "next at " << next_moment() << " ";
44 Music_iterator::get_req_translator_l()
46 assert(report_to_l());
47 if (report_to_l()->is_bottom_engraver_b() )
50 set_translator( report_to_l()->get_default_interpreter() );
55 Music_iterator::push_translator(Translator*t)
57 report_to_l_arr_.push(t);
58 t->iterator_count_ ++;
62 Music_iterator::pop_translator()
64 report_to_l()->iterator_count_ --;
65 assert (report_to_l()->iterator_count_ >=0);
66 report_to_l_arr_.pop();
70 Music_iterator::report_to_l()const
72 if (! report_to_l_arr_.size() )
74 return report_to_l_arr_.top();
79 Music_iterator::set_translator(Translator*trans)
81 if (report_to_l()==trans)
86 push_translator(trans);
90 Music_iterator::construct_children()
95 Music_iterator::~Music_iterator()
101 Music_iterator::next_moment()const
107 Music_iterator::process_and_next(Moment)
113 Music_iterator::ok()const
119 Music_iterator::static_get_iterator_p(Music *m,
120 Translator *report_l)
122 Music_iterator * p =0;
123 if (m->is_type_b( Request_chord::static_name()))
124 p = new Request_chord_iterator( (Request_chord*) m);
125 else if (m->is_type_b( Chord::static_name()))
126 p = new Chord_iterator( (Chord*) m);
127 else if (m->is_type_b( Voice::static_name()))
128 p = new Voice_iterator( (Voice*) m);
130 if (m -> type_str_ != "") {
131 Translator * a =report_l->
132 find_get_translator_l(m-> type_str_, m->id_str_);
133 p->set_translator( a);
137 if (! p->report_to_l() )
138 p ->set_translator(report_l);
144 Music_iterator::get_iterator_p(Music*m)const
146 Music_iterator*p = static_get_iterator_p(m,report_to_l());
147 p->daddy_iter_l_ = (Music_iterator*)this;
148 p->construct_children();
152 Music_iterator::Music_iterator()
160 Chord_iterator::Chord_iterator(Chord const *chord_C)
166 Chord_iterator::construct_children()
169 for(PCursor<Music*> i(chord_C_->music_p_list_.top()); //, int j = 0;
171 Music_iterator * mi = get_iterator_p( i.ptr());
173 set_translator(mi->report_to_l()->ancestor_l(
174 chord_C_->multi_level_i_ ) );
175 children_p_list_.bottom().add( mi );
181 Chord_iterator::do_print() const
184 for (PCursor<Music_iterator*> i(children_p_list_.top()); i.ok(); i++) {
191 Chord_iterator::process_and_next(Moment until)
193 for (PCursor<Music_iterator*> i(children_p_list_.top()); i.ok(); ) {
194 if (i->next_moment() == until) {
195 i->process_and_next(until);
202 Music_iterator::process_and_next(until);
206 IMPLEMENT_IS_TYPE_B1(Chord_iterator,Music_iterator);
209 Chord_iterator::next_moment()const
211 Moment next_ = infinity_mom;
212 for (PCursor<Music_iterator*> i(children_p_list_.top()); i.ok(); i++)
213 next_ = next_ <? i->next_moment() ;
220 Chord_iterator::ok()const
222 return children_p_list_.size();
228 Voice_iterator::do_print()const
234 Voice_iterator::Voice_iterator(Voice const*v)
235 : PCursor<Music*> ( v->music_p_list_)
237 here_mom_ = v->offset_mom_;
243 Voice_iterator::construct_children()
245 while (PCursor<Music*>::ok()) {
246 start_next_element();
247 if ( !iter_p_->ok()) {
250 set_voice_translator();
257 Voice_iterator::leave_element()
261 MInterval elt_time = ptr()->time_int();
262 if (!elt_time.empty_b())
263 here_mom_ += elt_time.length();
264 PCursor<Music*>::next();
268 Voice_iterator::start_next_element()
271 iter_p_ = get_iterator_p( ptr());
275 Voice_iterator::set_voice_translator()
277 if (iter_p_->report_to_l()->depth_i() > report_to_l()->depth_i())
278 set_translator(iter_p_->report_to_l());
281 Voice_iterator::~Voice_iterator()
287 IMPLEMENT_IS_TYPE_B1(Voice_iterator,Music_iterator);
290 Voice_iterator::process_and_next(Moment until)
293 Moment local_until = until - here_mom_;
294 while ( iter_p_->ok() ) {
295 Moment here = iter_p_->next_moment();
296 if (here != local_until)
299 iter_p_->process_and_next(local_until);
302 if (!iter_p_->ok() ) {
304 if ( PCursor<Music*>::ok() ) {
305 start_next_element();
306 set_voice_translator();
315 Music_iterator::process_and_next(until);
319 Voice_iterator::next_moment()const
321 return iter_p_->next_moment() + here_mom_;
325 Voice_iterator::ok()const
331 IMPLEMENT_IS_TYPE_B1(Request_chord_iterator,Music_iterator);
334 Request_chord_iterator::construct_children()
336 get_req_translator_l();
339 Request_chord_iterator::Request_chord_iterator(Request_chord*el_l)
342 elt_duration_ = el_l->time_int().length();
348 Request_chord_iterator::ok()const
350 return (elt_duration_ && !last_b_) || first_b_;
356 Request_chord_iterator::next_moment()const
365 Request_chord_iterator::do_print() const
368 mtor << "duration: " << elt_duration_;
372 Request_chord_iterator::process_and_next(Moment mom)
375 for (PCursor<Music*> i(elt_l_->music_p_list_); i.ok(); i++) {
376 assert(i->is_type_b(Request::static_name()));
377 Request * req_l = (Request*)i.ptr();
378 bool gotcha = report_to_l()->try_request(req_l);
380 req_l->warning("Junking request: " + String(req_l->name()));
386 if ( mom >= elt_duration_ )