*.[ch]: Replace GUILE_PROC w/ SCM_DEFINE.
[bpt/guile.git] / libguile / pairs.c
1 /* Copyright (C) 1995,1996 Free Software Foundation, Inc.
2 *
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
6 * any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
17 *
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
20 *
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
26 *
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
29 *
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
37 *
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
41
42 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
43 gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
44
45 \f
46 #include <stdio.h>
47 #include "_scm.h"
48
49
50 #include "scm_validate.h"
51
52 \f
53
54 /* {Pairs}
55 */
56
57 SCM_DEFINE(scm_cons, "cons", 2, 0, 0,
58 (SCM x, SCM y),
59 "")
60 #define FUNC_NAME s_scm_cons
61 {
62 register SCM z;
63 SCM_NEWCELL (z);
64 SCM_SETCAR (z, x);
65 SCM_SETCDR (z, y);
66 return z;
67 }
68 #undef FUNC_NAME
69
70
71 SCM
72 scm_cons2 (SCM w, SCM x, SCM y)
73 {
74 register SCM z;
75 SCM_NEWCELL (z);
76 SCM_SETCAR (z, x);
77 SCM_SETCDR (z, y);
78 x = z;
79 SCM_NEWCELL (z);
80 SCM_SETCAR (z, w);
81 SCM_SETCDR (z, x);
82 return z;
83 }
84
85
86 SCM_DEFINE (scm_pair_p, "pair?", 1, 0, 0,
87 (SCM x),
88 "")
89 #define FUNC_NAME s_scm_pair_p
90 {
91 if (SCM_IMP (x))
92 return SCM_BOOL_F;
93 return SCM_BOOL(SCM_CONSP (x));
94 }
95 #undef FUNC_NAME
96
97 SCM_DEFINE (scm_set_car_x, "set-car!", 2, 0, 0,
98 (SCM pair, SCM value),
99 "")
100 #define FUNC_NAME s_scm_set_car_x
101 {
102 SCM_VALIDATE_CONS(1,pair);
103 SCM_SETCAR (pair, value);
104 return SCM_UNSPECIFIED;
105 }
106 #undef FUNC_NAME
107
108 SCM_DEFINE (scm_set_cdr_x, "set-cdr!", 2, 0, 0,
109 (SCM pair, SCM value),
110 "")
111 #define FUNC_NAME s_scm_set_cdr_x
112 {
113 SCM_VALIDATE_CONS(1,pair);
114 SCM_SETCDR (pair, value);
115 return SCM_UNSPECIFIED;
116 }
117 #undef FUNC_NAME
118
119
120 \f
121
122 static const scm_iproc cxrs[] =
123 {
124 {"car", 0},
125 {"cdr", 0},
126 {"caar", 0},
127 {"cadr", 0},
128 {"cdar", 0},
129 {"cddr", 0},
130 {"caaar", 0},
131 {"caadr", 0},
132 {"cadar", 0},
133 {"caddr", 0},
134 {"cdaar", 0},
135 {"cdadr", 0},
136 {"cddar", 0},
137 {"cdddr", 0},
138 {"caaaar", 0},
139 {"caaadr", 0},
140 {"caadar", 0},
141 {"caaddr", 0},
142 {"cadaar", 0},
143 {"cadadr", 0},
144 {"caddar", 0},
145 {"cadddr", 0},
146 {"cdaaar", 0},
147 {"cdaadr", 0},
148 {"cdadar", 0},
149 {"cdaddr", 0},
150 {"cddaar", 0},
151 {"cddadr", 0},
152 {"cdddar", 0},
153 {"cddddr", 0},
154 {0, 0}
155 };
156
157 \f
158
159 void
160 scm_init_pairs ()
161 {
162 scm_init_iprocs (cxrs, scm_tc7_cxr);
163 #include "pairs.x"
164 }
165