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770827b0 | 1 | /* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
ee2a8b9b JB |
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 | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
ee2a8b9b JB |
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. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
ee2a8b9b JB |
41 | \f |
42 | ||
43 | \f | |
44 | /* Defining Scheme functions implemented by C functions --- subrs. */ | |
45 | ||
46 | #include <stdio.h> | |
47 | ||
48 | #include <gh.h> | |
49 | ||
50 | /* allows you to define new scheme primitives written in C */ | |
51 | SCM | |
52 | gh_new_procedure (char *proc_name, SCM (*fn) (), | |
53 | int n_required_args, int n_optional_args, int varp) | |
54 | { | |
55 | return scm_make_gsubr (proc_name, n_required_args, n_optional_args, | |
56 | varp, fn); | |
57 | } | |
58 | ||
59 | SCM | |
60 | gh_new_procedure0_0 (char *proc_name, SCM (*fn) ()) | |
61 | { | |
62 | return gh_new_procedure (proc_name, fn, 0, 0, 0); | |
63 | } | |
64 | ||
65 | SCM | |
66 | gh_new_procedure0_1 (char *proc_name, SCM (*fn) ()) | |
67 | { | |
68 | return gh_new_procedure (proc_name, fn, 0, 1, 0); | |
69 | } | |
70 | ||
71 | SCM | |
72 | gh_new_procedure0_2 (char *proc_name, SCM (*fn) ()) | |
73 | { | |
74 | return gh_new_procedure (proc_name, fn, 0, 2, 0); | |
75 | } | |
76 | ||
77 | SCM | |
78 | gh_new_procedure1_0 (char *proc_name, SCM (*fn) ()) | |
79 | { | |
80 | return gh_new_procedure (proc_name, fn, 1, 0, 0); | |
81 | } | |
82 | ||
83 | SCM | |
84 | gh_new_procedure1_1 (char *proc_name, SCM (*fn) ()) | |
85 | { | |
86 | return gh_new_procedure (proc_name, fn, 1, 1, 0); | |
87 | } | |
88 | ||
89 | SCM | |
90 | gh_new_procedure1_2 (char *proc_name, SCM (*fn) ()) | |
91 | { | |
92 | return gh_new_procedure (proc_name, fn, 1, 2, 0); | |
93 | } | |
94 | ||
95 | SCM | |
96 | gh_new_procedure2_0 (char *proc_name, SCM (*fn) ()) | |
97 | { | |
98 | return gh_new_procedure (proc_name, fn, 2, 0, 0); | |
99 | } | |
100 | ||
101 | SCM | |
102 | gh_new_procedure2_1 (char *proc_name, SCM (*fn) ()) | |
103 | { | |
104 | return gh_new_procedure (proc_name, fn, 2, 1, 0); | |
105 | } | |
106 | ||
107 | SCM | |
108 | gh_new_procedure2_2 (char *proc_name, SCM (*fn) ()) | |
109 | { | |
110 | return gh_new_procedure (proc_name, fn, 2, 2, 0); | |
111 | } | |
112 | ||
113 | SCM | |
114 | gh_new_procedure3_0 (char *proc_name, SCM (*fn) ()) | |
115 | { | |
116 | return gh_new_procedure (proc_name, fn, 3, 0, 0); | |
117 | } | |
118 | ||
119 | SCM | |
120 | gh_new_procedure4_0 (char *proc_name, SCM (*fn) ()) | |
121 | { | |
122 | return gh_new_procedure (proc_name, fn, 4, 0, 0); | |
123 | } | |
124 | ||
125 | SCM | |
126 | gh_new_procedure5_0 (char *proc_name, SCM (*fn) ()) | |
127 | { | |
128 | return gh_new_procedure (proc_name, fn, 5, 0, 0); | |
129 | } | |
130 | ||
131 | /* some (possibly most) Scheme functions available from C */ | |
132 | SCM | |
133 | gh_define (char *name, SCM val) | |
134 | { | |
135 | return scm_sysintern (name, val); | |
136 | } | |
137 | ||
138 | \f | |
139 | /* Calling Scheme functions from C. */ | |
140 | ||
141 | SCM | |
142 | gh_apply (SCM proc, SCM args) | |
143 | { | |
144 | return scm_apply (proc, args, SCM_EOL); | |
145 | } | |
146 | ||
147 | SCM | |
148 | gh_call0 (SCM proc) | |
149 | { | |
150 | return scm_apply (proc, SCM_EOL, SCM_EOL); | |
151 | } | |
152 | ||
153 | SCM | |
154 | gh_call1 (SCM proc, SCM arg) | |
155 | { | |
156 | return scm_apply (proc, arg, scm_listofnull); | |
157 | } | |
158 | ||
159 | SCM | |
160 | gh_call2 (SCM proc, SCM arg1, SCM arg2) | |
161 | { | |
162 | return scm_apply (proc, arg1, scm_cons (arg2, scm_listofnull)); | |
163 | } | |
164 | ||
165 | SCM | |
166 | gh_call3 (SCM proc, SCM arg1, SCM arg2, SCM arg3) | |
167 | { | |
168 | return scm_apply (proc, arg1, scm_cons2 (arg2, arg3, scm_listofnull)); | |
169 | } | |
89e00824 ML |
170 | |
171 | /* | |
172 | Local Variables: | |
173 | c-file-style: "gnu" | |
174 | End: | |
175 | */ |