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#ifndef SCM_VARIABLE_H
#define SCM_VARIABLE_H
/* Copyright 1995-1996,2000-2001,2006,2008,2011,2018
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/error.h>
#include <libguile/gc.h>
#include <libguile/snarf.h>
/* Variables
*/
#define SCM_VARIABLEP(X) (SCM_HAS_TYP7 (X, scm_tc7_variable))
#define SCM_VARIABLE_REF(V) SCM_CELL_OBJECT_1 (V)
#define SCM_VARIABLE_SET(V, X) SCM_SET_CELL_OBJECT_1 (V, X)
#define SCM_VARIABLE_LOC(V) (SCM_CELL_OBJECT_LOC ((V), 1))
#define SCM_VALIDATE_VARIABLE(pos, var) \
SCM_MAKE_VALIDATE_MSG (pos, var, VARIABLEP, "variable")
#define SCM_VARIABLE(c_name, scheme_name) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, SCM_BOOL_F);)
#define SCM_GLOBAL_VARIABLE(c_name, scheme_name) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, SCM_BOOL_F);)
#define SCM_VARIABLE_INIT(c_name, scheme_name, init_val) \
SCM_SNARF_HERE(static SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, init_val);)
#define SCM_GLOBAL_VARIABLE_INIT(c_name, scheme_name, init_val) \
SCM_SNARF_HERE(SCM c_name) \
SCM_SNARF_INIT(c_name = scm_c_define (scheme_name, init_val);)
SCM_API SCM scm_make_variable (SCM init);
SCM_API SCM scm_make_undefined_variable (void);
SCM_API SCM scm_variable_p (SCM obj);
SCM_API SCM scm_variable_ref (SCM var);
SCM_API SCM scm_variable_set_x (SCM var, SCM val);
SCM_API SCM scm_variable_unset_x (SCM var);
SCM_API SCM scm_variable_bound_p (SCM var);
SCM_INTERNAL void scm_i_variable_print (SCM var, SCM port, scm_print_state *pstate);
SCM_INTERNAL void scm_init_variable (void);
#endif /* SCM_VARIABLE_H */
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