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94 lines
3.4 KiB
C
94 lines
3.4 KiB
C
/* classes: h_files */
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#ifndef SCM_VARIABLE_H
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#define SCM_VARIABLE_H
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/* Copyright (C) 1995,1996,2000,2001 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#include "libguile/smob.h"
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/* Variables
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*/
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extern scm_t_bits scm_tc16_variable;
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#define SCM_VARIABLEP(X) SCM_SMOB_PREDICATE (scm_tc16_variable, X)
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#if !SCM_ENABLE_VCELLS
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#define SCM_VARIABLE_REF(V) SCM_CELL_OBJECT_1(V)
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#define SCM_VARIABLE_SET(V,X) SCM_SET_CELL_OBJECT_1 (V, X)
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#define SCM_VARIABLE_LOC(V) ((SCM *) SCM_CELL_WORD_LOC ((V), 1))
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#else
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#define SCM_VARVCELL(V) SCM_CELL_OBJECT_1(V)
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#define SCM_UDVARIABLEP(X) (SCM_VARIABLEP(X) && SCM_UNBNDP (SCM_CDR (SCM_VARVCELL (X))))
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#define SCM_DEFVARIABLEP(X) (SCM_VARIABLEP(X) && !SCM_UNBNDP (SCM_CDR (SCM_VARVCELL (X))))
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#define SCM_VARIABLE_REF(V) SCM_CDR(SCM_VARVCELL(V))
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#define SCM_VARIABLE_SET(V,X) SCM_SETCDR(SCM_VARVCELL(V),X)
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#define SCM_VARIABLE_LOC(V) SCM_CDRLOC(SCM_VARVCELL(V))
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#endif
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extern SCM scm_make_variable (SCM init);
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extern SCM scm_make_undefined_variable (void);
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extern SCM scm_variable_p (SCM obj);
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extern SCM scm_variable_ref (SCM var);
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extern SCM scm_variable_set_x (SCM var, SCM val);
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extern SCM scm_variable_bound_p (SCM var);
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extern SCM scm_variable_set_name_hint (SCM var, SCM hint);
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#if SCM_ENABLE_VCELLS
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extern SCM scm_builtin_variable (SCM name);
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#endif
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extern void scm_init_variable (void);
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#endif /* SCM_VARIABLE_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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