/*
- 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--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2003 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/>.
*/
-/*
- UGH. too many includes.
- */
-#include <stdio.h>
+#include <cstdio>
+using namespace std;
#include "warn.hh"
-#include "music-iterator.hh"
-#include "translator-group.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"
smobify_self ();
}
-Music_iterator::Music_iterator (Music_iterator const& src)
+Music_iterator::Music_iterator (Music_iterator const &)
{
- handle_ = *src.handle_.clone ();
- music_ = src.music_;
- music_length_ = src.music_length_;
- start_mom_ = src.start_mom_;
- smobify_self ();
+ assert (false);
}
Music_iterator::~Music_iterator ()
{
}
-Translator_group*
-Music_iterator::report_to () const
+Context *
+Music_iterator::get_outlet () const
{
- return handle_.report_to ();
+ return handle_.get_context ();
}
void
-Music_iterator::set_translator (Translator_group *trans)
+Music_iterator::set_context (Context *trans)
{
- handle_.set_translator (trans);
+ handle_.set_context (trans);
}
void
return false;
}
-void
-Music_iterator::skip (Moment)
-{
-}
-
-SCM
-Music_iterator::get_pending_events (Moment)const
-{
- return SCM_EOL;
-}
-
SCM
Music_iterator::get_static_get_iterator (Music *m)
{
- Music_iterator * p =0;
+ Music_iterator *p = 0;
- SCM ctor = m->get_mus_property ("iterator-ctor") ;
+ SCM ctor = m->get_property ("iterator-ctor");
SCM iter = SCM_EOL;
- if (gh_procedure_p (ctor))
+ if (ly_is_procedure (ctor))
{
- iter = gh_call0 (ctor);
- p = unsmob_iterator (iter);
+ iter = scm_call_0 (ctor);
+ p = Music_iterator::unsmob (iter);
}
else
{
if (dynamic_cast<Music_wrapper *> (m))
- p = new Music_wrapper_iterator;
+ p = new Music_wrapper_iterator;
+ else if (m->is_mus_type ("event"))
+ p = new Event_iterator;
else
- p = new Simple_music_iterator;
+ p = new Simple_music_iterator;
- iter = p->self_scm();
- scm_gc_unprotect_object (iter);
+ 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;
}
-
Moment
Music_iterator::music_get_length () const
{
}
void
-Music_iterator::init_translator (Music *m, Translator_group *report)
+Music_iterator::init_context (Music *m, Context *report)
{
music_ = m;
assert (m);
- if (! report_to ())
- set_translator (report);
+ if (! get_outlet ())
+ set_context (report);
}
void
-Music_iterator::substitute_outlet (Translator_group*f, Translator_group *t)
+Music_iterator::substitute_outlet (Context *f, Context *t)
{
- if (report_to () == f)
- set_translator (t);
- derived_substitute (f,t);
+ if (get_outlet () == f)
+ set_context (t);
+ derived_substitute (f, t);
}
void
-Music_iterator::derived_substitute (Translator_group*,Translator_group*)
+Music_iterator::derived_substitute (Context *, Context *)
{
}
Music_iterator::get_iterator (Music *m) const
{
SCM ip = get_static_get_iterator (m);
- Music_iterator*p = unsmob_iterator (ip);
-
- p->init_translator (m, report_to ());
-
+ Music_iterator *p = Music_iterator::unsmob (ip);
+
+ p->init_context (m, get_outlet ());
+
p->construct_children ();
return ip;
}
-/*
- TODO: rename to prevent confusion between Translator::try_music and
- Iterator::try_music
-
- */
-Music_iterator*
-Music_iterator::try_music (Music *m) const
+/* Descend to a bottom context; implicitly create a new one if necessary */
+void
+Music_iterator::descend_to_bottom_context ()
{
- bool b = report_to ()->try_music ((Music*)m); // ugh
- Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
- if (!it)
- it = try_music_in_children (m);
- return it;
+ assert (get_outlet ());
+ if (!get_outlet ()->is_bottom_context ())
+ set_context (get_outlet ()->get_default_interpreter ());
}
-Music_iterator*
-Music_iterator::try_music_in_children (Music *) const
+void
+Music_iterator::report_event (Music *m)
{
- return 0;
+ 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 ());
}
IMPLEMENT_CTOR_CALLBACK (Music_iterator);
/****************************************************************/
IMPLEMENT_TYPE_P (Music_iterator, "ly:iterator?");
-IMPLEMENT_SMOBS(Music_iterator);
-IMPLEMENT_DEFAULT_EQUAL_P(Music_iterator);
+IMPLEMENT_SMOBS (Music_iterator);
+IMPLEMENT_DEFAULT_EQUAL_P (Music_iterator);
SCM
Music_iterator::mark_smob (SCM smob)
{
- Music_iterator * mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
+ Music_iterator *mus = (Music_iterator *)SCM_CELL_WORD_1 (smob);
mus->derived_mark ();
/*
Careful with GC, although we intend the following as pointers
only, we _must_ mark them.
- */
- if (mus->report_to())
- scm_gc_mark (mus->report_to()->self_scm());
+ */
+ /* 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 (mus->handle_.get_context ())
+ scm_gc_mark (mus->handle_.get_context ()->self_scm ());
if (mus->music_)
- scm_gc_mark (mus->music_->self_scm());
-
+ scm_gc_mark (mus->music_->self_scm ());
return SCM_EOL;
}
int
-Music_iterator::print_smob (SCM sm , SCM port, scm_print_state*)
+Music_iterator::print_smob (SCM sm, SCM port, scm_print_state *)
{
char s[1000];
- Music_iterator *iter = unsmob_iterator (sm);
- sprintf (s, "#<%s>", classname (iter));
+ Music_iterator *iter = Music_iterator::unsmob (sm);
+ sprintf (s, "#<%s>", iter->class_name ());
scm_puts (s, port);
return 1;
}
void
-Music_iterator::derived_mark()const
+Music_iterator::derived_mark ()const
{
}
Music_iterator::quit ()
{
do_quit ();
- handle_.quit ();
+ handle_.set_context (0);
}
void
-Music_iterator::do_quit()
+Music_iterator::do_quit ()
{
}
{
return false;
}
+
+bool
+is_child_context (Context *me, Context *child)
+{
+ 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