/*
- 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--2015 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 "music.hh"
+#include "context.hh"
+#include "warn.hh"
+#include "context-def.hh"
Simultaneous_music_iterator::Simultaneous_music_iterator ()
{
+ create_separate_contexts_ = false;
+ children_list_ = SCM_EOL;
}
-Simultaneous_music_iterator::~Simultaneous_music_iterator ()
+void
+Simultaneous_music_iterator::derived_mark () const
{
+ scm_gc_mark (children_list_);
}
void
-Simultaneous_music_iterator::construct_children()
+Simultaneous_music_iterator::derived_substitute (Context *f, Context *t)
{
- int j = 0;
- Simultaneous_music const *sim = dynamic_cast<Simultaneous_music const*> (music_l_);
- for (PCursor<Music*> i (sim->music_p_list_p_->top());
- i.ok(); j++, i++)
- {
- Music_iterator * mi = get_iterator_p (i.ptr());
- if (mi->ok())
- {
- if (sim->translator_type_str_.empty_b ())
- set_translator (mi->report_to_l()->ancestor_l (0)); // huh?
- children_p_list_.bottom().add (mi);
- }
- else
- delete mi;
- }
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob<Music_iterator> (scm_car (s))->substitute_outlet (f, t);
}
-
void
-Simultaneous_music_iterator::do_print() const
+Simultaneous_music_iterator::construct_children ()
{
-#ifndef NPRINT
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
+ int j = 0;
+
+ 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++)
{
- i->print();
+ Music *mus = unsmob<Music> (scm_car (i));
+
+ SCM scm_iter = get_static_get_iterator (mus);
+ Music_iterator *mi = unsmob<Music_iterator> (scm_iter);
+
+ /* if create_separate_contexts_ is set, create a new context with the
+ number number as name */
+
+ 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 ();
+
+ if (!c)
+ c = get_outlet ();
+
+ mi->init_context (mus, c);
+ mi->construct_children ();
+
+ if (mi->ok ())
+ {
+ *tail = scm_cons (scm_iter, *tail);
+ tail = SCM_CDRLOC (*tail);
+ }
+ else
+ mi->quit ();
}
-#endif
}
+// If we have some iterators with definite next moment and no of them
+// remain after processing, we take the iterators with indefinite next
+// moment along. That makes sure that no Lyric_combine_music_iterator
+// will outstay its welcome (issue 2010).
+
void
-Simultaneous_music_iterator::do_process_and_next (Moment until)
+Simultaneous_music_iterator::process (Moment until)
{
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok ();)
+ SCM *proc = &children_list_;
+ bool finite = !pending_moment ().main_part_.is_infinity ();
+ while (scm_is_pair (*proc))
{
- if (i->next_moment() == until)
- {
- i->process_and_next (until);
- }
- if (!i->ok())
- delete i.remove_p();
+ Music_iterator *i = unsmob<Music_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
- i++;
+ {
+ proc = SCM_CDRLOC (*proc);
+ }
+ }
+ // If there were definite-ended iterators and all of them died, take
+ // the rest of the iterators along with them. They have
+ // likely lost their reference iterators. Basing this on the actual
+ // music contexts is not reliable since something like
+ // \new Voice = blah {
+ // << \context Voice = blah { c4 d }
+ // \addlyrics { oh no }
+ // >> e f
+ // }
+ // cannot wait for the death of context blah before ending the
+ // simultaneous iterator.
+ if (finite && pending_moment ().main_part_.is_infinity ())
+ {
+ for (SCM p = children_list_; scm_is_pair (p); p = scm_cdr (p))
+ unsmob<Music_iterator> (scm_car (p))->quit ();
+ children_list_ = SCM_EOL;
}
- 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 (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
- next = next <? i->next_moment() ;
+
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob<Music_iterator> (scm_car (s));
+ next = min (next, it->pending_moment ());
+ }
+
return next;
}
-
+bool
+Simultaneous_music_iterator::ok () const
+{
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob<Music_iterator> (scm_car (s));
+ if (it->ok ())
+ return true;
+ }
+ return false;
+}
bool
-Simultaneous_music_iterator::ok() const
+Simultaneous_music_iterator::run_always () const
+{
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob<Music_iterator> (scm_car (s));
+ if (it->run_always ())
+ return true;
+ }
+ return false;
+}
+
+void
+Simultaneous_music_iterator::do_quit ()
{
- return children_p_list_.size();
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob<Music_iterator> (scm_car (s))->quit ();
}
+IMPLEMENT_CTOR_CALLBACK (Simultaneous_music_iterator);