/*
- music-iterator.cc -- implement Music_iterator
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 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.
+
+ 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/>.
*/
-#include "debug.hh"
-#include "music-list.hh"
-#include "music-iterator.hh"
-#include "voice-iterator.hh"
-#include "property-iterator.hh"
-#include "chord-iterator.hh"
-#include "request-iterator.hh"
-#include "translator-group.hh"
-#include "translation-property.hh"
-#include "change-iterator.hh"
-#include "change-translator.hh"
-IMPLEMENT_IS_TYPE_B(Music_iterator);
+#include <cstdio>
+using namespace std;
+
+#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"
+
+
+Music_iterator::Music_iterator ()
+{
+ music_ = 0;
+ smobify_self ();
+}
+Music_iterator::~Music_iterator ()
+{
+}
+
+Context *
+Music_iterator::get_outlet () const
+{
+ return handle_.get_context ();
+}
void
-Music_iterator::do_print() const
+Music_iterator::set_context (Context *trans)
{
+ handle_.set_context (trans);
+}
+void
+Music_iterator::construct_children ()
+{
+}
+
+Moment
+Music_iterator::pending_moment () const
+{
+ return 0;
}
void
-Music_iterator::print() const
-{
-#ifndef NPRINT
- if (!check_debug)
- return ;
- DOUT << name() << "{";
- DOUT << "report to " <<
- report_to_l() << " (" << report_to_l ()->name () << ")\n";
- if (ok())
- DOUT << "next at " << next_moment() << " ";
+Music_iterator::process (Moment)
+{
+}
+
+bool
+Music_iterator::ok () const
+{
+ return false;
+}
+
+SCM
+Music_iterator::get_static_get_iterator (Music *m)
+{
+ Music_iterator *p = 0;
+
+ SCM ctor = m->get_property ("iterator-ctor");
+ SCM iter = SCM_EOL;
+ if (ly_is_procedure (ctor))
+ {
+ iter = scm_call_0 (ctor);
+ p = unsmob<Music_iterator> (iter);
+ }
else
- DOUT << "not feeling well today..";
- do_print();
- DOUT << "}\n";
-#endif
+ {
+ 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 ();
+
+ return iter;
}
-Translator_group*
-Music_iterator::get_req_translator_l()
+Moment
+Music_iterator::music_get_length () const
{
- assert (report_to_l());
- if (report_to_l()->is_bottom_translator_b ())
- return report_to_l();
+ return music_length_;
+}
- set_translator (report_to_l()->get_default_interpreter ());
- return report_to_l();
+Moment
+Music_iterator::music_start_mom ()const
+{
+ return start_mom_;
}
void
-Music_iterator::push_translator (Translator_group*t)
+Music_iterator::init_context (Music *m, Context *report)
{
- report_to_l_arr_.push (t);
- t->iterator_count_ ++;
+ music_ = m;
+ assert (m);
+ if (! get_outlet ())
+ set_context (report);
}
void
-Music_iterator::pop_translator()
+Music_iterator::substitute_outlet (Context *f, Context *t)
{
- report_to_l()->iterator_count_ --;
- assert (report_to_l()->iterator_count_ >=0);
- report_to_l_arr_.pop();
+ if (f != t)
+ {
+ if (get_outlet () == f)
+ set_context (t);
+ derived_substitute (f, t);
+ }
}
-Translator_group*
-Music_iterator::report_to_l() const
+void
+Music_iterator::derived_substitute (Context *, Context *)
{
- if (! report_to_l_arr_.size())
- return 0;
- return report_to_l_arr_.top();
}
+SCM
+Music_iterator::get_iterator (Music *m) const
+{
+ SCM ip = get_static_get_iterator (m);
+ Music_iterator *p = unsmob<Music_iterator> (ip);
+
+ p->init_context (m, get_outlet ());
+ p->construct_children ();
+ return ip;
+}
+
+/* Descend to a bottom context; implicitly create a new one if necessary */
void
-Music_iterator::set_translator (Translator_group*trans)
-{
- if (report_to_l()==trans)
- return;
- if (report_to_l())
- pop_translator();
- if (trans)
- push_translator (trans);
+Music_iterator::descend_to_bottom_context ()
+{
+ assert (get_outlet ());
+ if (!get_outlet ()->is_bottom_context ())
+ set_context (get_outlet ()->get_default_interpreter ());
}
void
-Music_iterator::construct_children()
+Music_iterator::report_event (Music *m)
{
+ descend_to_bottom_context ();
+ /*
+ FIXME: then don't do it.
+ */
+ if (!m->is_mus_type ("event"))
+ m->origin ()->programming_error ("Sending non-event to context");
+
+ m->send_to_context (get_outlet ());
}
-Music_iterator::~Music_iterator()
+IMPLEMENT_CTOR_CALLBACK (Music_iterator);
+
+Music *
+Music_iterator::get_music () const
{
- set_translator (0);
+ return music_;
}
-Moment
-Music_iterator::next_moment() const
+/****************************************************************/
+
+const char * const Music_iterator::type_p_name_ = "ly:iterator?";
+
+SCM
+Music_iterator::mark_smob () const
{
- return 0;
+ derived_mark ();
+ /*
+ Careful with GC, although we intend the following as pointers
+ only, we _must_ mark them.
+ */
+ /* Use handle_ directly as get_outlet is a virtual function and we
+ need to protect the context until Music_iterator::quit is being
+ run. */
+ if (handle_.get_context ())
+ scm_gc_mark (handle_.get_context ()->self_scm ());
+ if (music_)
+ scm_gc_mark (music_->self_scm ());
+
+ return SCM_EOL;
+}
+
+int
+Music_iterator::print_smob (SCM port, scm_print_state *) const
+{
+ char s[1000];
+
+ sprintf (s, "#<%s>", class_name ());
+ scm_puts (s, port);
+ return 1;
}
void
-Music_iterator::process_and_next (Moment)
+Music_iterator::derived_mark ()const
{
- first_b_ = false;
}
-bool
-Music_iterator::ok() const
-{
- return first_b_;
-}
-
-Music_iterator*
-Music_iterator::static_get_iterator_p (Music *m,
- Translator_group*report_l)
-{
- 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);
- else if (m->is_type_b (Translation_property::static_name ()))
- p = new Property_iterator((Translation_property *) m);
- else if (m->is_type_b (Change_translator::static_name ()))
- p = new Change_iterator((Change_translator*) m);
-
- if (m -> translator_type_str_)
- {
- Translator_group* a =report_l->
- find_create_translator_l (m-> translator_type_str_, m->translator_id_str_);
- p->set_translator (a);
- }
+void
+Music_iterator::quit ()
+{
+ do_quit ();
+ handle_.set_context (0);
+}
- if (! p->report_to_l())
- p ->set_translator (report_l);
-
- return p;
+void
+Music_iterator::do_quit ()
+{
}
-Music_iterator*
-Music_iterator::get_iterator_p (Music*m) const
+bool
+Music_iterator::run_always ()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 false;
}
-Music_iterator::Music_iterator()
+bool
+is_child_context (Context *me, Context *child)
{
- daddy_iter_l_ =0;
- first_b_ = true;
+ while (child && child != me)
+ child = child->get_parent_context ();
+
+ return child == me;
}
+/*
+ move to context of child iterator if it is deeper down in the
+ hierarchy.
+*/
+void
+Music_iterator::descend_to_child (Context *child_report)
+{
+ Context *me_report = get_outlet ();
+ if (is_child_context (me_report, child_report))
+ set_context (child_report);
+}
projects / lilypond.git / blobdiff