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58ade102 | 1 | /* Copyright (C) 1995,1996,1997, 2000, 2001 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 | /* list manipulation */ | |
44 | ||
a0599745 | 45 | #include "libguile/gh.h" |
ee2a8b9b JB |
46 | |
47 | /* returns the length of a list */ | |
c014a02e | 48 | unsigned long |
92396c0a | 49 | gh_length (SCM l) |
ee2a8b9b | 50 | { |
92396c0a | 51 | return gh_scm2ulong (scm_length (l)); |
ee2a8b9b JB |
52 | } |
53 | ||
54 | /* list operations */ | |
55 | ||
7fee59bd MG |
56 | /* gh_list(SCM elt, ...) is implemented as a macro in gh.h. */ |
57 | ||
58 | /* gh_append() takes a args, which is a list of lists, and appends | |
59 | them all together into a single list, which is returned. This is | |
60 | equivalent to the Scheme procedure (append list1 list2 ...) */ | |
1be6b49c | 61 | SCM |
1afff620 | 62 | gh_append (SCM args) |
7fee59bd | 63 | { |
1afff620 | 64 | return scm_append (args); |
7fee59bd MG |
65 | } |
66 | ||
1be6b49c | 67 | SCM |
1afff620 | 68 | gh_append2 (SCM l1, SCM l2) |
7fee59bd | 69 | { |
1afff620 | 70 | return scm_append (scm_list_2 (l1, l2)); |
7fee59bd MG |
71 | } |
72 | ||
1be6b49c ML |
73 | SCM |
74 | gh_append3(SCM l1, SCM l2, SCM l3) | |
7fee59bd | 75 | { |
1afff620 | 76 | return scm_append (scm_list_3 (l1, l2, l3)); |
7fee59bd MG |
77 | } |
78 | ||
1be6b49c | 79 | SCM |
1afff620 | 80 | gh_append4 (SCM l1, SCM l2, SCM l3, SCM l4) |
7fee59bd | 81 | { |
1afff620 | 82 | return scm_append (scm_list_4 (l1, l2, l3, l4)); |
7fee59bd MG |
83 | } |
84 | ||
85 | /* gh_reverse() is defined as a macro in gh.h */ | |
86 | /* gh_list_tail() is defined as a macro in gh.h */ | |
87 | /* gh_list_ref() is defined as a macro in gh.h */ | |
88 | /* gh_memq() is defined as a macro in gh.h */ | |
89 | /* gh_memv() is defined as a macro in gh.h */ | |
90 | /* gh_member() is defined as a macro in gh.h */ | |
91 | /* gh_assq() is defined as a macro in gh.h */ | |
92 | /* gh_assv() is defined as a macro in gh.h */ | |
93 | /* gh_assoc() is defined as a macro in gh.h */ | |
94 | ||
ee2a8b9b JB |
95 | /* analogous to the Scheme cons operator */ |
96 | SCM | |
97 | gh_cons (SCM x, SCM y) | |
98 | { | |
99 | return scm_cons (x, y); | |
100 | } | |
101 | ||
ee2a8b9b JB |
102 | /* analogous to the Scheme car operator */ |
103 | SCM | |
104 | gh_car (SCM x) | |
105 | { | |
106 | return SCM_CAR (x); | |
107 | } | |
108 | ||
109 | /* analogous to the Scheme cdr operator */ | |
110 | SCM | |
111 | gh_cdr (SCM x) | |
112 | { | |
113 | return SCM_CDR (x); | |
114 | } | |
115 | ||
116 | /* now for the multiple car/cdr utility procedures */ | |
117 | SCM | |
118 | gh_caar (SCM x) | |
119 | { | |
120 | return SCM_CAAR (x); | |
121 | } | |
122 | SCM | |
123 | gh_cadr (SCM x) | |
124 | { | |
125 | return SCM_CADR (x); | |
126 | } | |
127 | SCM | |
128 | gh_cdar (SCM x) | |
129 | { | |
130 | return SCM_CDAR (x); | |
131 | } | |
132 | SCM | |
133 | gh_cddr (SCM x) | |
134 | { | |
135 | return SCM_CDDR (x); | |
136 | } | |
137 | ||
138 | SCM | |
139 | gh_caaar (SCM x) | |
140 | { | |
141 | return SCM_CAAAR (x); | |
142 | } | |
143 | SCM | |
144 | gh_caadr (SCM x) | |
145 | { | |
146 | return SCM_CAADR (x); | |
147 | } | |
148 | SCM | |
149 | gh_cadar (SCM x) | |
150 | { | |
151 | return SCM_CADAR (x); | |
152 | } | |
153 | SCM | |
154 | gh_caddr (SCM x) | |
155 | { | |
156 | return SCM_CADDR (x); | |
157 | } | |
158 | SCM | |
159 | gh_cdaar (SCM x) | |
160 | { | |
161 | return SCM_CDAAR (x); | |
162 | } | |
163 | SCM | |
164 | gh_cdadr (SCM x) | |
165 | { | |
166 | return SCM_CDADR (x); | |
167 | } | |
168 | SCM | |
169 | gh_cddar (SCM x) | |
170 | { | |
171 | return SCM_CDDAR (x); | |
172 | } | |
173 | SCM | |
174 | gh_cdddr (SCM x) | |
175 | { | |
176 | return SCM_CDDDR (x); | |
177 | } | |
7fee59bd MG |
178 | |
179 | /* equivalent to (set-car! pair value) */ | |
180 | SCM | |
181 | gh_set_car_x(SCM pair, SCM value) | |
182 | { | |
183 | return scm_set_car_x(pair, value); | |
184 | } | |
185 | ||
186 | /* equivalent to (set-cdr! pair value) */ | |
187 | SCM | |
188 | gh_set_cdr_x(SCM pair, SCM value) | |
189 | { | |
190 | return scm_set_cdr_x(pair, value); | |
191 | } | |
89e00824 ML |
192 | |
193 | /* | |
194 | Local Variables: | |
195 | c-file-style: "gnu" | |
196 | End: | |
197 | */ |