/*
- smobs.cc -- implement Smob protection
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.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 "smobs.hh"
+#include "listener.hh"
-static SCM smob_protection_list;
+Listener
+Smob_core::get_listener (SCM callback)
+{
+ return Listener (callback, self_scm ());
+}
+
+/*
+ The CDR contains the actual protected list.
+ */
+static SCM smob_protection_list = SCM_EOL;
void
init_smob_protection ()
{
- smob_protection_list = scm_cons (SCM_UNDEFINED, SCM_EOL);
- scm_permanent_object (smob_protection_list);
+ smob_protection_list = scm_cons (SCM_BOOL_F, SCM_EOL);
+ scm_gc_protect_object (smob_protection_list);
}
ADD_SCM_INIT_FUNC (init_smob_protection, init_smob_protection);
+LY_DEFINE (ly_smob_protects, "ly:smob-protects",
+ 0, 0, 0, (),
+ "Return LilyPond's internal smob protection list.")
+{
+ return scm_is_pair (smob_protection_list)
+ ? scm_cdr (smob_protection_list)
+ : SCM_EOL;
+}
+
void
protect_smob (SCM smob, SCM *prot_cons)
{
+#if 0
SCM s = scm_cdr (smob_protection_list);
- while (scm_is_pair (s) && scm_car (s) == SCM_UNDEFINED)
- s = scm_cdr (s);
-
+ while (scm_is_pair (s) && scm_is_false (scm_car (s))
+ {
+ s = scm_cdr (s);
+ }
SCM prot = scm_cons (smob, s);
scm_set_cdr_x (smob_protection_list,
- prot);
+ prot);
*prot_cons = prot;
+#else
+ (void) prot_cons;
+ scm_gc_protect_object (smob);
+#endif
}
void
-unprotect_smob (SCM *prot_cons)
+unprotect_smob (SCM smob, SCM *prot_cons)
{
+#if 1
+ (void) prot_cons;
+ scm_gc_unprotect_object (smob);
+#else
SCM next = scm_cdr (*prot_cons);
- if (next == SCM_EOL)
- scm_set_car_x (*prot_cons, SCM_UNDEFINED);
+ if (scm_is_null (next)))
+ scm_set_car_x (*prot_cons, SCM_BOOL_F);
else
{
- scm_set_car_x (*prot_cons, SCM_UNDEFINED);
+ scm_set_car_x (*prot_cons, SCM_BOOL_F);
while (scm_is_pair (next)
- && scm_car (next) == SCM_UNDEFINED)
+ && scm_is_false (scm_car (next)))
- next = scm_cdr (next);
+ next = scm_cdr (next);
scm_set_cdr_x (*prot_cons, next);
}
*prot_cons = SCM_EOL;
+#endif
+}
+
+
+Scm_init const *Scm_init::list_ = 0;
+
+void
+Scm_init::init ()
+{
+ for (Scm_init const *p = list_; p; p = p->next_)
+ p->fun_ ();
}