/*
- 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--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2005 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 "property-iterator.hh"
-#include "music.hh"
#include "context-def.hh"
#include "global-context.hh"
+#include "international.hh"
+#include "music.hh"
bool check_grob (Music *mus, SCM sym);
translation unit, and set the property.
*/
void
-Property_iterator::process (Moment m)
+Property_iterator::process (Moment mom)
{
- SCM sym = get_music ()->get_property ("symbol");
- if (scm_is_symbol (sym))
+ Context *o = get_outlet ();
+ Music *m = get_music ();
+ bool once = to_boolean (m->get_property ("once"));
+ SCM symbol = m->get_property ("symbol");
+ SCM previous_value = SCM_UNDEFINED;
+ if (once) {
+ Context *w = o->where_defined (symbol, &previous_value);
+ if (o != w)
+ previous_value = SCM_UNDEFINED;
+ }
+ send_stream_event (o, "SetProperty", m->origin (),
+ ly_symbol2scm ("symbol"), symbol,
+ ly_symbol2scm ("value"), m->get_property ("value"));
+
+ /* For \once \set install a finalization hook to reset the property to the
+ * previous value after the timestep */
+ if (once)
{
- SCM val = get_music ()->get_property ("value");
- bool ok = true;
- if (val != SCM_EOL)
- ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
- if (ok)
- get_outlet ()->internal_set_property (sym, val);
+ Global_context *tg = get_outlet ()->get_global_context ();
+ tg->add_finalization (scm_list_n (once_finalization_proc,
+ o->self_scm (), m->self_scm (),
+ ly_quote_scm (previous_value), SCM_UNDEFINED));
}
- Simple_music_iterator::process (m);
+
+ Simple_music_iterator::process (mom);
}
void
Property_unset_iterator::process (Moment m)
{
SCM sym = get_music ()->get_property ("symbol");
- type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
- get_outlet ()->unset_property (sym);
+ send_stream_event (get_outlet (), "UnsetProperty", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym);
Simple_music_iterator::process (m);
}
-MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 2);
+MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 3);
SCM
-Property_iterator::once_finalization (SCM translator, SCM music)
+Property_iterator::once_finalization (SCM ctx, SCM music, SCM previous_value)
{
Music *m = unsmob_music (music);
- Context *tg
- = dynamic_cast<Context *> (unsmob_context (translator));
- SCM sym = m->get_property ("symbol");
+ Context *c = unsmob_context (ctx);
+
+ // Do not use UnsetProperty, which sets the default, but rather
+ // cache the value before the \once \set command and restore it now
+ send_stream_event (c, "SetProperty", m->origin (),
+ ly_symbol2scm ("symbol"), m->get_property ("symbol"),
+ ly_symbol2scm ("value"), previous_value);
- tg->unset_property (sym);
return SCM_UNSPECIFIED;
}
void
Property_iterator::do_quit ()
{
- if (to_boolean (get_music ()->get_property ("once")))
- {
- SCM trans = get_outlet ()->self_scm ();
- SCM music = get_music ()->self_scm ();
-
- Global_context *tg = get_outlet ()->get_global_context ();
- tg->add_finalization (scm_list_n (once_finalization_proc,
- trans, music, SCM_UNDEFINED));
- }
}
-SCM list_p = 0;
-
-/*
- This is a rather crude check: we merely check if the translator
- property is a list.
-*/
bool
check_grob (Music *mus, SCM sym)
{
- if (!list_p)
- {
- list_p = scm_c_eval_string ("list?");
- }
+ 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)));
- SCM type = scm_object_property (sym, ly_symbol2scm ("translation-type?"));
- bool ok = type == list_p;
+ return g;
+}
+
+SCM
+get_property_path (Music *m)
+{
+ SCM grob_property_path = m->get_property ("grob-property-path");
- if (!ok)
+ SCM eprop = m->get_property ("grob-property");
+ if (scm_is_symbol (eprop))
{
- mus->origin ()->warning (_f ("Not a grob name, `%s'.", ly_symbol2string (sym)));
+ grob_property_path = scm_list_1 (eprop);
}
- return ok;
+
+ return grob_property_path;
}
void
SCM sym = get_music ()->get_property ("symbol");
if (check_grob (get_music (), sym))
{
- SCM eprop = get_music ()->get_property ("grob-property");
+ SCM grob_property_path = get_property_path (get_music ());
SCM val = get_music ()->get_property ("grob-value");
if (to_boolean (get_music ()->get_property ("pop-first"))
- && !to_boolean (get_music ()->get_property ("once")))
- execute_pushpop_property (get_outlet (), sym, eprop, SCM_UNDEFINED);
-
- execute_pushpop_property (get_outlet (), sym, eprop, val);
+ && !to_boolean (get_music ()->get_property ("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 ("value"), val);
}
Simple_music_iterator::process (m);
}
MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
SCM
-Push_property_iterator::once_finalization (SCM trans, SCM music)
+Push_property_iterator::once_finalization (SCM ctx, SCM music)
{
Music *mus = unsmob_music (music);
- Context *tg = dynamic_cast<Context *> (unsmob_context (trans));
+ Context *c = unsmob_context (ctx);
SCM sym = mus->get_property ("symbol");
if (check_grob (mus, sym))
{
- SCM eprop = mus->get_property ("grob-property");
+ SCM grob_property_path = get_property_path (mus);
- execute_pushpop_property (tg, sym, eprop, SCM_UNDEFINED);
+ send_stream_event (c, "Revert", mus->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
}
return SCM_UNSPECIFIED;
}
Global_context *tg = get_outlet ()->get_global_context ();
tg->add_finalization (scm_list_n (once_finalization_proc,
- trans, music, SCM_UNDEFINED));
+ trans, music, SCM_UNDEFINED));
}
}
if (check_grob (get_music (), sym))
{
- SCM eprop = get_music ()->get_property ("grob-property");
- execute_pushpop_property (get_outlet (), sym, eprop, SCM_UNDEFINED);
+ SCM grob_property_path = get_property_path (get_music ());
+
+ send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+ ly_symbol2scm ("symbol"), sym,
+ ly_symbol2scm ("property-path"), grob_property_path);
}
Simple_music_iterator::process (m);
}
IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
IMPLEMENT_CTOR_CALLBACK (Property_iterator);
IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);
-
projects / lilypond.git / blobdiff