/*
- property-iterator.cc -- implement Property_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 "property-iterator.hh"
-#include "translation-property.hh"
-#include "translator-group.hh"
-Property_iterator::Property_iterator (Translation_property *prop_l)
+#include "context-def.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "music.hh"
+
+bool check_grob (Music *mus, SCM sym);
+
+/**
+ There is no real processing to a property: just lookup the
+ translation unit, and set the property.
+*/
+void
+Property_iterator::process (Moment mom)
+{
+ Context *o = get_outlet ();
+ Music *m = get_music ();
+
+ send_stream_event (o, "SetProperty", m->origin (),
+ ly_symbol2scm ("symbol"), m->get_property ("symbol"),
+ ly_symbol2scm ("value"), m->get_property ("value"),
+ ly_symbol2scm ("once"), m->get_property ("once"));
+
+ Simple_music_iterator::process (mom);
+}
+
+void
+Property_unset_iterator::process (Moment mom)
+{
+ Context *o = get_outlet ();
+ Music *m = get_music ();
+
+ send_stream_event (o, "UnsetProperty", m->origin (),
+ ly_symbol2scm ("symbol"), m->get_property ("symbol"),
+ ly_symbol2scm ("once"), m->get_property ("once"));
+
+ Simple_music_iterator::process (mom);
+}
+
+bool
+check_grob (Music *mus, SCM sym)
+{
+ bool g = to_boolean (scm_object_property (sym, ly_symbol2scm ("is-grob?")));
+
+ if (!g)
+ mus->origin ()->warning (_f ("not a grob name, `%s'",
+ ly_symbol2string (sym)));
+
+ return g;
+}
+
+SCM
+get_property_path (Music *m)
+{
+ SCM grob_property_path = m->get_property ("grob-property-path");
+
+ SCM eprop = m->get_property ("grob-property");
+ if (scm_is_symbol (eprop))
+ {
+ grob_property_path = scm_list_1 (eprop);
+ }
+
+ return grob_property_path;
+}
+
+void
+Push_property_iterator::process (Moment m)
{
- property_l_ = prop_l;
+ SCM sym = get_music ()->get_property ("symbol");
+ if (check_grob (get_music (), sym))
+ {
+ SCM grob_property_path = get_property_path (get_music ());
+ SCM val = get_music ()->get_property ("grob-value");
+ SCM once = get_music ()->get_property ("once");
+
+ if (to_boolean (get_music ()->get_property ("pop-first"))
+ && !to_boolean (once))
+ send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
+
+ send_stream_event (get_outlet (), "Override", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path,
+ ly_symbol2scm ("once"), once,
+ ly_symbol2scm ("value"), val);
+ }
+ Simple_music_iterator::process (m);
}
void
-Property_iterator::process_and_next (Moment m)
+Pop_property_iterator::process (Moment mom)
{
- if (property_l_->var_str_.length_i ())
- report_to_l ()->set_property (property_l_->var_str_, property_l_->value_);
- Music_iterator::process_and_next (m);
+ Music *m = get_music ();
+ SCM sym = m->get_property ("symbol");
+
+ if (check_grob (m, sym))
+ {
+ SCM grob_property_path = get_property_path (m);
+
+ send_stream_event (get_outlet (), "Revert", m->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("once"), m->get_property ("once"),
+ ly_symbol2scm ("property-path"), grob_property_path);
+ }
+ Simple_music_iterator::process (mom);
}
-IMPLEMENT_IS_TYPE_B1(Property_iterator, Music_iterator);
+IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);