/*
- Simultaneous_music-iterator.cc -- implement Simultaneous_music_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--1999 Han-Wen Nienhuys <hanwen@cs.uu.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 "translator-group.hh"
-#include "debug.hh"
#include "simultaneous-music-iterator.hh"
-#include "music-list.hh"
-#include "killing-cons.tcc"
+#include "music.hh"
+#include "context.hh"
+#include "warn.hh"
+#include "context-def.hh"
Simultaneous_music_iterator::Simultaneous_music_iterator ()
{
- separate_contexts_b_ = false;
+ create_separate_contexts_ = false;
+ children_list_ = SCM_EOL;
}
-Simultaneous_music_iterator::~Simultaneous_music_iterator ()
+void
+Simultaneous_music_iterator::derived_mark () const
{
- children_p_list_.junk ();
+ scm_gc_mark (children_list_);
}
void
-Simultaneous_music_iterator::construct_children()
+Simultaneous_music_iterator::derived_substitute (Context *f, Context *t)
+{
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob_iterator (scm_car (s))->substitute_outlet (f, t);
+}
+
+void
+Simultaneous_music_iterator::construct_children ()
{
int j = 0;
- Music_sequence const *sim = dynamic_cast<Music_sequence const*> (music_l_);
- Cons<Music> *i = (sim->music_p_list_p_) ? sim->music_p_list_p_->head_ : 0;
- for (; i; i = i->next_, j++)
+ SCM i = get_music ()->get_property ("elements");
+
+ children_list_ = SCM_EOL;
+ SCM *tail = &children_list_;
+ for (; scm_is_pair (i); i = scm_cdr (i), j++)
{
- Music_iterator * mi = static_get_iterator_p (i->car_);
+ Music *mus = unsmob_music (scm_car (i));
+
+ SCM scm_iter = get_static_get_iterator (mus);
+ Music_iterator *mi = unsmob_iterator (scm_iter);
- /* if separate_contexts_b_ is set, create a new context with the
- number number as name */
-
- Translator_group * t = (j && separate_contexts_b_)
- ? report_to_l ()->find_create_translator_l (report_to_l()->type_str_,
- to_str (j))
- : report_to_l ();
+ /* if create_separate_contexts_ is set, create a new context with the
+ number number as name */
- if (!t)
- t = report_to_l ();
+ SCM name = ly_symbol2scm (get_outlet ()->context_name ().c_str ());
+ Context *c = (j && create_separate_contexts_)
+ ? get_outlet ()->find_create_context (name, ::to_string (j), SCM_EOL)
+ : get_outlet ();
- mi->init_translator (i->car_, t);
+ if (!c)
+ c = get_outlet ();
+
+ mi->init_context (mus, c);
mi->construct_children ();
-
- if (mi->ok())
- {
- children_p_list_.append (new Killing_cons<Music_iterator> (mi,0));
- }
+
+ if (mi->ok ())
+ {
+ *tail = scm_cons (scm_iter, *tail);
+ tail = SCM_CDRLOC (*tail);
+ }
else
- delete mi;
+ mi->quit ();
}
}
void
-Simultaneous_music_iterator::do_print() const
-{
-#ifndef NPRINT
- for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
- p->car_->print();
-#endif
-}
-
-void
-Simultaneous_music_iterator::do_process_and_next (Moment until)
+Simultaneous_music_iterator::process (Moment until)
{
- for (Cons<Music_iterator> **pp = &children_p_list_.head_; *pp; )
+ SCM *proc = &children_list_;
+ while (scm_is_pair (*proc))
{
- Music_iterator * i = (*pp)->car_;
- if (i->next_moment() == until)
- {
- i->process_and_next (until);
- }
- if (!i->ok())
- delete children_p_list_.remove_cons (pp);
+ Music_iterator *i = unsmob_iterator (scm_car (*proc));
+ if (i->run_always ()
+ || i->pending_moment () == until)
+ i->process (until);
+ if (!i->ok ())
+ {
+ i->quit ();
+ *proc = scm_cdr (*proc);
+ }
else
- pp = &(*pp)->next_;
+ proc = SCM_CDRLOC (*proc);
}
- Music_iterator::do_process_and_next (until);
}
-
-
-
Moment
-Simultaneous_music_iterator::next_moment() const
+Simultaneous_music_iterator::pending_moment () const
{
Moment next;
next.set_infinite (1);
-
- for (Cons<Music_iterator> *p = children_p_list_.head_; p; p = p->next_)
- next = next <? p->car_->next_moment() ;
+
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ next = min (next, it->pending_moment ());
+ }
+
return next;
}
-
+bool
+Simultaneous_music_iterator::ok () const
+{
+ bool run_always_ok = false;
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ if (!it->run_always ())
+ return true;
+ else
+ run_always_ok = run_always_ok || it->ok ();
+ }
+ return run_always_ok;
+}
bool
-Simultaneous_music_iterator::ok() const
+Simultaneous_music_iterator::run_always () const
{
- return children_p_list_.head_;
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ if (it->run_always ())
+ return true;
+ }
+ return false;
}
-Music_iterator*
-Simultaneous_music_iterator::try_music_in_children (Music const*m) const
+void
+Simultaneous_music_iterator::do_quit ()
{
- Music_iterator * b=0;
- for (Cons<Music_iterator> *p = children_p_list_.head_; !b && p; p = p->next_)
- b =p->car_->try_music (m);
- return b;
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob_iterator (scm_car (s))->quit ();
}
+
+IMPLEMENT_CTOR_CALLBACK (Simultaneous_music_iterator);
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