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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef VARIABLEH | |
4 | #define VARIABLEH | |
5 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; see the file COPYING. If not, write to | |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | * As a special exception, the Free Software Foundation gives permission | |
22 | * for additional uses of the text contained in its release of GUILE. | |
23 | * | |
24 | * The exception is that, if you link the GUILE library with other files | |
25 | * to produce an executable, this does not by itself cause the | |
26 | * resulting executable to be covered by the GNU General Public License. | |
27 | * Your use of that executable is in no way restricted on account of | |
28 | * linking the GUILE library code into it. | |
29 | * | |
30 | * This exception does not however invalidate any other reasons why | |
31 | * the executable file might be covered by the GNU General Public License. | |
32 | * | |
33 | * This exception applies only to the code released by the | |
34 | * Free Software Foundation under the name GUILE. If you copy | |
35 | * code from other Free Software Foundation releases into a copy of | |
36 | * GUILE, as the General Public License permits, the exception does | |
37 | * not apply to the code that you add in this way. To avoid misleading | |
38 | * anyone as to the status of such modified files, you must delete | |
39 | * this exception notice from them. | |
40 | * | |
41 | * If you write modifications of your own for GUILE, it is your choice | |
42 | * whether to permit this exception to apply to your modifications. | |
43 | * If you do not wish that, delete this exception notice. | |
44 | */ | |
45 | \f | |
46 | #include "__scm.h" | |
47 | ||
48 | \f | |
49 | ||
50 | ||
51 | /* Variables | |
52 | */ | |
53 | extern int scm_tc16_variable; | |
54 | ||
55 | #define SCM_VARVCELL(V) SCM_CDR(V) | |
56 | #define SCM_VARIABLEP(X) (scm_tc16_variable == SCM_CAR(X)) | |
57 | #define SCM_UDSCM_VARIABLEP(X) (SCM_VARIABLEP(X) && SCM_UNBNDP (SCM_CDR (SCM_VARVCELL (X)))) | |
58 | #define SCM_DEFSCM_VARIABLEP(X) (SCM_VARIABLEP(X) && !SCM_UNBNDP (SCM_CDR (SCM_VARVCELL (X)))) | |
59 | ||
60 | \f | |
61 | #ifdef __STDC__ | |
62 | extern SCM scm_make_variable (SCM init, SCM name_hint); | |
63 | extern SCM scm_make_udvariable (SCM name_hint); | |
64 | extern SCM scm_variable_p (SCM obj); | |
65 | extern SCM scm_variable_ref (SCM var); | |
66 | extern SCM scm_variable_set_x (SCM var, SCM val); | |
67 | extern SCM scm_builtin_variable (SCM name); | |
68 | extern SCM scm_variable_bound_p (SCM var); | |
69 | extern void scm_init_variable (void); | |
70 | ||
71 | #else /* STDC */ | |
72 | extern SCM scm_make_variable (); | |
73 | extern SCM scm_make_udvariable (); | |
74 | extern SCM scm_variable_p (); | |
75 | extern SCM scm_variable_ref (); | |
76 | extern SCM scm_variable_set_x (); | |
77 | extern SCM scm_builtin_variable (); | |
78 | extern SCM scm_variable_bound_p (); | |
79 | extern void scm_init_variable (); | |
80 | ||
81 | #endif /* STDC */ | |
82 | ||
83 | ||
84 | ||
85 | ||
86 | ||
87 | #endif /* VARIABLEH */ |