/*
- music-iterator.cc -- implement {Music,Chord,Voice}_iterator
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
-*/
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
-#include "music-list.hh"
-#include "music-iterator.hh"
-#include "translator.hh"
-#include "request.hh"
-#include "debug.hh"
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
-IMPLEMENT_IS_TYPE_B(Music_iterator);
+#include <cstdio>
+using namespace std;
-Chord_iterator::~Chord_iterator()
-{
-}
+#include "warn.hh"
+#include "music.hh"
+#include "context.hh"
+#include "event-iterator.hh"
+#include "input.hh"
+#include "international.hh"
+#include "music-wrapper.hh"
+#include "music-wrapper-iterator.hh"
+#include "simple-music-iterator.hh"
-void
-Music_iterator::do_print()const
-{
+#include "ly-smobs.icc"
-}
-
-void
-Music_iterator::print() const
+Music_iterator::Music_iterator ()
{
-#ifndef NPRINT
- if ( !check_debug)
- return ;
- DOUT << name() << "{";
- DOUT << "report to " <<
- report_to_l() << " (" << report_to_l ()->name () << ")\n";
- DOUT << "next at " << next_moment() << " ";
- do_print();
- DOUT << "}\n";
-#endif
+ music_ = 0;
+ smobify_self ();
}
-Translator *
-Music_iterator::get_req_translator_l()
+Music_iterator::Music_iterator (Music_iterator const &)
{
- assert (report_to_l());
- if (report_to_l()->is_bottom_engraver_b ())
- return report_to_l();
-
- set_translator (report_to_l()->get_default_interpreter ());
- return report_to_l();
+ assert (false);
}
-void
-Music_iterator::push_translator (Translator*t)
+Music_iterator::~Music_iterator ()
{
- report_to_l_arr_.push (t);
- t->iterator_count_ ++;
}
-void
-Music_iterator::pop_translator()
+Context *
+Music_iterator::get_outlet () const
{
- report_to_l()->iterator_count_ --;
- assert (report_to_l()->iterator_count_ >=0);
- report_to_l_arr_.pop();
-}
-
-Translator*
-Music_iterator::report_to_l()const
-{
- if (! report_to_l_arr_.size())
- return 0;
- return report_to_l_arr_.top();
-}
-
-
-void
-Music_iterator::set_translator (Translator*trans)
-{
- if (report_to_l()==trans)
- return;
- if ( report_to_l())
- pop_translator();
- if (trans)
- push_translator (trans);
+ return handle_.get_context ();
}
void
-Music_iterator::construct_children()
+Music_iterator::set_context (Context *trans)
{
-
+ handle_.set_context (trans);
}
-Music_iterator::~Music_iterator()
+void
+Music_iterator::construct_children ()
{
- set_translator (0);
}
Moment
-Music_iterator::next_moment()const
+Music_iterator::pending_moment () const
{
return 0;
}
void
-Music_iterator::process_and_next (Moment)
+Music_iterator::process (Moment)
{
- first_b_ = false;
}
bool
-Music_iterator::ok()const
+Music_iterator::ok () const
{
- return first_b_;
+ return false;
}
-Music_iterator*
-Music_iterator::static_get_iterator_p (Music *m,
- Translator *report_l)
+SCM
+Music_iterator::get_static_get_iterator (Music *m)
{
- Music_iterator * p =0;
- if (m->is_type_b (Request_chord::static_name()))
- p = new Request_chord_iterator ((Request_chord*) m);
- else if (m->is_type_b (Chord::static_name()))
- p = new Chord_iterator ((Chord*) m);
- else if (m->is_type_b (Voice::static_name()))
- p = new Voice_iterator ((Voice*) m);
-
- if (m -> type_str_ != "")
+ Music_iterator *p = 0;
+
+ SCM ctor = m->get_property ("iterator-ctor");
+ SCM iter = SCM_EOL;
+ if (ly_is_procedure (ctor))
{
- Translator * a =report_l->
- find_get_translator_l (m-> type_str_, m->id_str_);
- p->set_translator (a);
+ iter = scm_call_0 (ctor);
+ p = unsmob_iterator (iter);
+ }
+ else
+ {
+ if (dynamic_cast<Music_wrapper *> (m))
+ p = new Music_wrapper_iterator;
+ else if (m->is_mus_type ("event"))
+ p = new Event_iterator;
+ else
+ p = new Simple_music_iterator;
+
+ iter = p->self_scm ();
+ p->unprotect ();
}
+ p->music_ = m;
+ assert (m);
+ p->music_length_ = m->get_length ();
+ p->start_mom_ = m->start_mom ();
- if (! p->report_to_l())
- p ->set_translator (report_l);
-
- return p;
-}
-
-Music_iterator*
-Music_iterator::get_iterator_p (Music*m)const
-{
- Music_iterator*p = static_get_iterator_p (m,report_to_l());
- p->daddy_iter_l_ = (Music_iterator*)this;
- p->construct_children();
- return p;
+ return iter;
}
-Music_iterator::Music_iterator()
+Moment
+Music_iterator::music_get_length () const
{
- daddy_iter_l_ =0;
- first_b_ = true;
+ return music_length_;
}
-/* ************** */
-
-Chord_iterator::Chord_iterator (Chord const *chord_C)
+Moment
+Music_iterator::music_start_mom ()const
{
- chord_C_ = chord_C;
+ return start_mom_;
}
void
-Chord_iterator::construct_children()
+Music_iterator::init_context (Music *m, Context *report)
{
- int j = 0;
- for (PCursor<Music*> i (chord_C_->music_p_list_.top()); //, int j = 0;
- i.ok(); j++, i++)
- {
- Music_iterator * mi = get_iterator_p (i.ptr());
- if ( mi->ok())
- {
- set_translator (mi->report_to_l()->ancestor_l (
- chord_C_->multi_level_i_) );
- children_p_list_.bottom().add (mi);
- }
- else
- delete mi;
- }
+ music_ = m;
+ assert (m);
+ if (! get_outlet ())
+ set_context (report);
}
+
void
-Chord_iterator::do_print() const
+Music_iterator::substitute_outlet (Context *f, Context *t)
{
-#ifndef NPRINT
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
- {
- i->print();
- }
-#endif
+ if (get_outlet () == f)
+ set_context (t);
+ derived_substitute (f, t);
}
void
-Chord_iterator::process_and_next (Moment until)
+Music_iterator::derived_substitute (Context *, Context *)
{
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok ();)
- {
- if (i->next_moment() == until)
- {
- i->process_and_next (until);
- }
- if (!i->ok())
- delete i.remove_p();
- else
- i++;
- }
- Music_iterator::process_and_next (until);
}
-
-IMPLEMENT_IS_TYPE_B1(Chord_iterator,Music_iterator);
-
-Moment
-Chord_iterator::next_moment()const
+SCM
+Music_iterator::get_iterator (Music *m) const
{
- Moment next_ = infinity_mom;
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
- next_ = next_ <? i->next_moment() ;
- return next_;
-}
-
+ SCM ip = get_static_get_iterator (m);
+ Music_iterator *p = unsmob_iterator (ip);
+ p->init_context (m, get_outlet ());
-bool
-Chord_iterator::ok()const
-{
- return children_p_list_.size();
+ p->construct_children ();
+ return ip;
}
-/* ************** */
-
+/* Descend to a bottom context; implicitly create a new one if necessary */
void
-Voice_iterator::do_print()const
-{
- if (iter_p_)
- iter_p_->print();
-}
-
-Voice_iterator::Voice_iterator (Voice const*v)
- : PCursor<Music*> ( v->music_p_list_)
+Music_iterator::descend_to_bottom_context ()
{
- here_mom_ = v->offset_mom_;
- voice_C_ = v;
- iter_p_ =0;
+ assert (get_outlet ());
+ if (!get_outlet ()->is_bottom_context ())
+ set_context (get_outlet ()->get_default_interpreter ());
}
void
-Voice_iterator::construct_children()
+Music_iterator::report_event (Music *m)
{
- while (PCursor<Music*>::ok())
- {
- start_next_element();
- if ( !iter_p_->ok())
- {
- leave_element();
- }
- else
- {
- set_voice_translator();
- break;
- }
- }
-}
+ descend_to_bottom_context ();
-void
-Voice_iterator::leave_element()
-{
- delete iter_p_;
- iter_p_ =0;
- MInterval elt_time = ptr()->time_int ();
- if (!elt_time.empty_b())
- here_mom_ += elt_time.length();
- PCursor<Music*>::next();
-}
+ /*
+ FIXME: then don't do it.
+ */
+ if (!m->is_mus_type ("event"))
+ m->origin ()->programming_error ("Sending non-event to context");
-void
-Voice_iterator::start_next_element()
-{
- assert (!iter_p_);
- iter_p_ = get_iterator_p (ptr());
+ m->send_to_context (get_outlet ());
}
-void
-Voice_iterator::set_voice_translator()
-{
- if (iter_p_->report_to_l()->depth_i () > report_to_l ()->depth_i ())
- set_translator (iter_p_->report_to_l());
-}
+IMPLEMENT_CTOR_CALLBACK (Music_iterator);
-Voice_iterator::~Voice_iterator()
+Music *
+Music_iterator::get_music () const
{
- assert (! iter_p_);
+ return music_;
}
+/****************************************************************/
-IMPLEMENT_IS_TYPE_B1(Voice_iterator,Music_iterator);
+IMPLEMENT_TYPE_P (Music_iterator, "ly:iterator?");
+IMPLEMENT_SMOBS (Music_iterator);
+IMPLEMENT_DEFAULT_EQUAL_P (Music_iterator);
-void
-Voice_iterator::process_and_next (Moment until)
+SCM
+Music_iterator::mark_smob (SCM smob)
{
- while (1)
- {
- Moment local_until = until - here_mom_;
- while ( iter_p_->ok())
- {
- Moment here = iter_p_->next_moment();
- if (here != local_until)
- goto loopexit;
-
- iter_p_->process_and_next (local_until);
- }
-
- if (!iter_p_->ok())
- {
- leave_element();
- if ( PCursor<Music*>::ok())
- {
- start_next_element();
- set_voice_translator();
- }
- else
- {
- goto loopexit;
- }
- }
- }
+ Music_iterator *mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
-loopexit:
+ mus->derived_mark ();
+ /*
+ Careful with GC, although we intend the following as pointers
+ only, we _must_ mark them.
+ */
+ if (mus->get_outlet ())
+ scm_gc_mark (mus->get_outlet ()->self_scm ());
+ if (mus->music_)
+ scm_gc_mark (mus->music_->self_scm ());
- Music_iterator::process_and_next (until);
+ return SCM_EOL;
}
-Moment
-Voice_iterator::next_moment()const
+int
+Music_iterator::print_smob (SCM sm, SCM port, scm_print_state *)
{
- return iter_p_->next_moment() + here_mom_;
+ char s[1000];
+
+ Music_iterator *iter = unsmob_iterator (sm);
+ sprintf (s, "#<%s>", iter->class_name ());
+ scm_puts (s, port);
+ return 1;
}
-bool
-Voice_iterator::ok()const
+void
+Music_iterator::derived_mark ()const
{
- return iter_p_;
}
-
-IMPLEMENT_IS_TYPE_B1(Request_chord_iterator,Music_iterator);
-
void
-Request_chord_iterator::construct_children()
+Music_iterator::quit ()
{
- get_req_translator_l();
+ do_quit ();
+ handle_.set_context (0);
}
-Request_chord_iterator::Request_chord_iterator (Request_chord*el_l)
+void
+Music_iterator::do_quit ()
{
- elt_l_ = el_l;
- elt_duration_ = el_l->time_int().length ();
- last_b_ = false;
}
-
bool
-Request_chord_iterator::ok()const
+Music_iterator::run_always ()const
{
- return (elt_duration_ && !last_b_) || first_b_;
+ return false;
}
-
-
-Moment
-Request_chord_iterator::next_moment()const
+bool
+is_child_context (Context *me, Context *child)
{
- Moment m (0);
- if (!first_b_)
- m = elt_duration_;
- return m;
-}
+ while (child && child != me)
+ child = child->get_parent_context ();
-void
-Request_chord_iterator::do_print() const
-{
-#ifndef NPRINT
- DOUT << "duration: " << elt_duration_;
-#endif
+ return child == me;
}
+
+/*
+ move to context of child iterator if it is deeper down in the
+ hierarchy.
+*/
void
-Request_chord_iterator::process_and_next (Moment mom)
+Music_iterator::descend_to_child (Context *child_report)
{
- if ( first_b_)
- {
- for (PCursor<Music*> i (elt_l_->music_p_list_); i.ok(); i++)
- {
- assert (i->is_type_b (Request::static_name()));
- Request * req_l = (Request*)i.ptr();
- bool gotcha = report_to_l()->try_request (req_l);
- if (!gotcha)
- req_l->warning ("Junking request: " + String (req_l->name()));
-
- }
- first_b_ = false;
- }
-
- if ( mom >= elt_duration_)
- last_b_ = true;
+ Context *me_report = get_outlet ();
+ if (is_child_context (me_report, child_report))
+ set_context (child_report);
}
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