source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "property-iterator.hh"
-#include "translation-property.hh"
-#include "translator-group.hh"
+
+#include "music.hh"
+#include "context-def.hh"
+#include "global-context.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.
- */
+ There is no real processing to a property: just lookup the
+ translation unit, and set the property.
+*/
+void
+Property_iterator::process (Moment m)
+{
+ SCM sym = get_music ()->get_property ("symbol");
+ if (scm_is_symbol (sym))
+ {
+ 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);
+ }
+ Simple_music_iterator::process (m);
+}
+
+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);
+
+ Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 2);
+SCM
+Property_iterator::once_finalization (SCM translator, SCM music )
+{
+ Music * m = unsmob_music (music);
+ Context * tg
+ = dynamic_cast<Context *> (unsmob_context (translator));
+ SCM sym = m->get_property ("symbol");
+
+ tg->unset_property (sym);
+ return SCM_UNSPECIFIED;
+}
+
void
-Property_iterator::do_process_and_next (Moment m)
+Property_iterator::do_quit ()
{
- SCM sym = music_l_->get_mus_property ("symbol");
- if (gh_symbol_p(sym))
- report_to_l ()->set_property (sym, music_l_->get_mus_property ("value"));
- Music_iterator::do_process_and_next (m);
+ 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?");
+ }
+
+
+ SCM type = scm_object_property (sym, ly_symbol2scm ("translation-type?"));
+ bool ok = type == list_p;
+
+ if (!ok)
+ {
+ mus->origin ()->warning (_f ("Not a grob name, `%s'." , ly_symbol2string (sym)));
+ }
+ return ok;
+}
+
void
-Push_property_iterator::do_process_and_next (Moment m)
+Push_property_iterator::process (Moment m)
+{
+ SCM sym = get_music ()->get_property ("symbol");
+ if (check_grob (get_music (), sym))
+ {
+ SCM eprop = get_music ()->get_property ("grob-property");
+ 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);
+ }
+ Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
+SCM
+Push_property_iterator::once_finalization (SCM trans, SCM music)
{
- SCM syms = music_l_->get_mus_property ("symbols");
- SCM eprop = music_l_->get_mus_property ("element-property");
- SCM val = music_l_->get_mus_property ("element-value");
+ Music * mus = unsmob_music (music);
+ Context * tg = dynamic_cast<Context *> (unsmob_context (trans));
+
+ SCM sym = mus->get_property ("symbol");
+ if (check_grob (mus, sym))
+ {
+ SCM eprop = mus->get_property ("grob-property");
+
+ execute_pushpop_property (tg, sym, eprop, SCM_UNDEFINED);
+ }
+ return SCM_UNSPECIFIED;
+}
- for (SCM s = syms; gh_pair_p (s); s = gh_cdr (s))
+void
+Push_property_iterator::do_quit ()
+{
+ if (to_boolean (get_music ()->get_property ("once")))
{
- SCM sym = gh_car (s);
- if (gh_symbol_p(sym))
- {
- SCM prev = report_to_l ()->get_property (sym);
-
- prev = gh_cons (gh_cons (eprop, val), prev);
- report_to_l ()->set_property (gh_car (s), prev);
- }
+ 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));
}
- Music_iterator::do_process_and_next (m);
}
void
-Pop_property_iterator::do_process_and_next (Moment m)
+Pop_property_iterator::process (Moment m)
{
- SCM syms = music_l_->get_mus_property ("symbols");
- SCM eprop = music_l_->get_mus_property ("element-property");
- for (SCM s = syms; gh_pair_p (s); s = gh_cdr (s))
+ SCM sym = get_music ()->get_property ("symbol");
+
+ if (check_grob (get_music (), sym))
{
- SCM sym = gh_car (s);
- if (gh_symbol_p(sym))
- {
- SCM prev = report_to_l ()->get_property (sym);
-
- SCM newprops= SCM_EOL ;
- while (gh_pair_p (prev) && gh_caar (prev) != eprop)
- {
- newprops = gh_cons (gh_car (prev), newprops);
- prev = gh_cdr (prev);
- }
-
- newprops = scm_reverse_x (newprops, gh_cdr (prev));
- report_to_l ()->set_property (sym, newprops);
- }
+ SCM eprop = get_music ()->get_property ("grob-property");
+execute_pushpop_property (get_outlet (), sym, eprop, SCM_UNDEFINED);
}
- Music_iterator::do_process_and_next (m);
+ Simple_music_iterator::process (m);
}
+
+
+
+IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);
+
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