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#ifndef SCM_PROMISES_H
#define SCM_PROMISES_H
/* Copyright 1995-1996,1998-2004,2008-2009,2018
Free Software Foundation, Inc.
This file is part of Guile.
Guile is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Guile 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Guile. If not, see
<https://www.gnu.org/licenses/>. */
#include "libguile/smob.h"
/* {Promises}
*/
#define SCM_F_PROMISE_COMPUTED (1L << 0)
#define SCM_PROMISE_COMPUTED_P(promise) \
(SCM_F_PROMISE_COMPUTED & SCM_SMOB_FLAGS (promise))
#define SCM_SET_PROMISE_COMPUTED(promise) \
SCM_SET_SMOB_FLAGS ((promise), SCM_F_PROMISE_COMPUTED)
#define SCM_PROMISE_MUTEX SCM_SMOB_OBJECT_2
#define SCM_PROMISE_DATA SCM_SMOB_OBJECT
#define SCM_SET_PROMISE_DATA SCM_SET_SMOB_OBJECT
SCM_API scm_t_bits scm_tc16_promise;
SCM_API SCM scm_make_promise (SCM thunk);
SCM_API SCM scm_force (SCM x);
SCM_API SCM scm_promise_p (SCM x);
SCM_INTERNAL void scm_init_promises (void);
#endif /* SCM_PROMISES_H */
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