6 /* Copyright (C) 1995,1996,2000,2001 Free Software Foundation, Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this software; see the file COPYING. If not, write to
20 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
21 * Boston, MA 02111-1307 USA
23 * As a special exception, the Free Software Foundation gives permission
24 * for additional uses of the text contained in its release of GUILE.
26 * The exception is that, if you link the GUILE library with other files
27 * to produce an executable, this does not by itself cause the
28 * resulting executable to be covered by the GNU General Public License.
29 * Your use of that executable is in no way restricted on account of
30 * linking the GUILE library code into it.
32 * This exception does not however invalidate any other reasons why
33 * the executable file might be covered by the GNU General Public License.
35 * This exception applies only to the code released by the
36 * Free Software Foundation under the name GUILE. If you copy
37 * code from other Free Software Foundation releases into a copy of
38 * GUILE, as the General Public License permits, the exception does
39 * not apply to the code that you add in this way. To avoid misleading
40 * anyone as to the status of such modified files, you must delete
41 * this exception notice from them.
43 * If you write modifications of your own for GUILE, it is your choice
44 * whether to permit this exception to apply to your modifications.
45 * If you do not wish that, delete this exception notice. */
49 #include "libguile/__scm.h"
50 #include "libguile/smob.h"
56 #define SCM_VARIABLEP(X) (!SCM_IMP (X) && SCM_TYP7(X) == scm_tc7_variable)
57 #define SCM_VARIABLE_REF(V) SCM_CELL_OBJECT_1 (V)
58 #define SCM_VARIABLE_SET(V, X) SCM_SET_CELL_OBJECT_1 (V, X)
59 #define SCM_VARIABLE_LOC(V) ((SCM *) SCM_CELL_WORD_LOC ((V), 1))
63 SCM_API SCM
scm_make_variable (SCM init
);
64 SCM_API SCM
scm_make_undefined_variable (void);
65 SCM_API SCM
scm_variable_p (SCM obj
);
66 SCM_API SCM
scm_variable_ref (SCM var
);
67 SCM_API SCM
scm_variable_set_x (SCM var
, SCM val
);
68 SCM_API SCM
scm_variable_bound_p (SCM var
);
70 SCM_API
void scm_i_variable_print (SCM var
, SCM port
, scm_print_state
*pstate
);
72 SCM_API
void scm_init_variable (void);
74 #endif /* SCM_VARIABLE_H */