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7dc6e754 | 1 | /* Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc. |
0f2d19dd 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 | |
0f2d19dd 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. */ |
1bbd0b84 GB |
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 | ||
0f2d19dd JB |
45 | \f |
46 | #include <stdio.h> | |
47 | #include "_scm.h" | |
20e6290e JB |
48 | #include "eq.h" |
49 | #include "list.h" | |
50 | ||
1bbd0b84 | 51 | #include "scm_validate.h" |
20e6290e | 52 | #include "alist.h" |
0f2d19dd JB |
53 | |
54 | \f | |
55 | ||
3b3b36dd | 56 | SCM_DEFINE (scm_acons, "acons", 3, 0, 0, |
0b5f3f34 | 57 | (SCM key, SCM value, SCM alist), |
4079f87e GB |
58 | "Adds a new key-value pair to @var{alist}. A new pair is |
59 | created whose car is @var{key} and whose cdr is @var{value}, and the | |
60 | pair is consed onto @var{alist}, and the new list is returned. This | |
61 | function is @emph{not} destructive; @var{alist} is not modified.") | |
1bbd0b84 | 62 | #define FUNC_NAME s_scm_acons |
0f2d19dd | 63 | { |
0b5f3f34 GB |
64 | SCM pair; |
65 | SCM head; | |
66 | ||
67 | SCM_NEWCELL (pair); | |
68 | SCM_SETCAR (pair, key); | |
69 | SCM_SETCDR (pair, value); | |
70 | ||
71 | SCM_NEWCELL (head); | |
72 | SCM_SETCAR (head, pair); | |
73 | SCM_SETCDR (head, alist); | |
74 | ||
75 | return head; | |
0f2d19dd | 76 | } |
1bbd0b84 | 77 | #undef FUNC_NAME |
0f2d19dd JB |
78 | |
79 | \f | |
80 | ||
a1ec6916 | 81 | SCM_DEFINE (scm_sloppy_assq, "sloppy-assq", 2, 0, 0, |
0b5f3f34 | 82 | (SCM key, SCM alist), |
4079f87e GB |
83 | "Behaves like @code{assq} but does not do any error checking. |
84 | Recommended only for use in Guile internals.") | |
1bbd0b84 | 85 | #define FUNC_NAME s_scm_sloppy_assq |
0f2d19dd | 86 | { |
0c95b57d | 87 | for (; SCM_CONSP (alist); alist = SCM_CDR (alist)) |
0f2d19dd | 88 | { |
cf18adf0 | 89 | SCM tmp = SCM_CAR(alist); |
0b5f3f34 | 90 | if (SCM_CONSP (tmp) && (SCM_CAR (tmp)==key)) |
cf18adf0 | 91 | return tmp; |
0f2d19dd JB |
92 | } |
93 | return SCM_BOOL_F; | |
94 | } | |
1bbd0b84 | 95 | #undef FUNC_NAME |
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96 | |
97 | ||
98 | ||
a1ec6916 | 99 | SCM_DEFINE (scm_sloppy_assv, "sloppy-assv", 2, 0, 0, |
0b5f3f34 | 100 | (SCM key, SCM alist), |
4079f87e GB |
101 | "Behaves like @code{assv} but does not do any error checking. |
102 | Recommended only for use in Guile internals.") | |
1bbd0b84 | 103 | #define FUNC_NAME s_scm_sloppy_assv |
0f2d19dd | 104 | { |
0c95b57d | 105 | for (; SCM_CONSP (alist); alist = SCM_CDR (alist)) |
0f2d19dd | 106 | { |
cf18adf0 | 107 | SCM tmp = SCM_CAR(alist); |
0b5f3f34 GB |
108 | if (SCM_CONSP (tmp) |
109 | && SCM_NFALSEP (scm_eqv_p (SCM_CAR (tmp), key))) | |
cf18adf0 | 110 | return tmp; |
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111 | } |
112 | return SCM_BOOL_F; | |
113 | } | |
1bbd0b84 | 114 | #undef FUNC_NAME |
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115 | |
116 | ||
a1ec6916 | 117 | SCM_DEFINE (scm_sloppy_assoc, "sloppy-assoc", 2, 0, 0, |
0b5f3f34 | 118 | (SCM key, SCM alist), |
4079f87e GB |
119 | "Behaves like @code{assoc} but does not do any error checking. |
120 | Recommended only for use in Guile internals.") | |
1bbd0b84 | 121 | #define FUNC_NAME s_scm_sloppy_assoc |
0f2d19dd | 122 | { |
0c95b57d | 123 | for (; SCM_CONSP (alist); alist = SCM_CDR (alist)) |
0f2d19dd | 124 | { |
cf18adf0 | 125 | SCM tmp = SCM_CAR(alist); |
0b5f3f34 GB |
126 | if (SCM_CONSP (tmp) |
127 | && SCM_NFALSEP (scm_equal_p (SCM_CAR (tmp), key))) | |
cf18adf0 | 128 | return tmp; |
0f2d19dd JB |
129 | } |
130 | return SCM_BOOL_F; | |
131 | } | |
1bbd0b84 | 132 | #undef FUNC_NAME |
0f2d19dd JB |
133 | |
134 | ||
135 | \f | |
136 | ||
3b3b36dd | 137 | SCM_DEFINE (scm_assq, "assq", 2, 0, 0, |
0b5f3f34 | 138 | (SCM key, SCM alist), |
4079f87e GB |
139 | "@deffnx primitive assv key alist |
140 | @deffnx primitive assoc key alist | |
141 | Fetches the entry in @var{alist} that is associated with @var{key}. To | |
142 | decide whether the argument @var{key} matches a particular entry in | |
143 | @var{alist}, @code{assq} compares keys with @code{eq?}, @code{assv} | |
144 | uses @code{eqv?} and @code{assoc} uses @code{equal?}. If @var{key} | |
145 | cannot be found in @var{alist} (according to whichever equality | |
146 | predicate is in use), then @code{#f} is returned. These functions | |
147 | return the entire alist entry found (i.e. both the key and the value).") | |
1bbd0b84 | 148 | #define FUNC_NAME s_scm_assq |
0f2d19dd | 149 | { |
1bbd0b84 GB |
150 | SCM tmp; |
151 | for(;SCM_NIMP(alist);alist = SCM_CDR(alist)) { | |
3b3b36dd | 152 | SCM_VALIDATE_ALISTCELL_COPYSCM (2,alist,tmp); |
0b5f3f34 | 153 | if (SCM_CAR(tmp)==key) return tmp; |
1bbd0b84 | 154 | } |
3b3b36dd | 155 | SCM_VALIDATE_NULL (2,alist); |
1bbd0b84 | 156 | return SCM_BOOL_F; |
0f2d19dd | 157 | } |
1bbd0b84 | 158 | #undef FUNC_NAME |
0f2d19dd JB |
159 | |
160 | ||
3b3b36dd | 161 | SCM_DEFINE (scm_assv, "assv", 2, 0, 0, |
0b5f3f34 GB |
162 | (SCM key, SCM alist), |
163 | "Behaves like @code{assq} but uses @code{eqv?} for key comparison.") | |
1bbd0b84 | 164 | #define FUNC_NAME s_scm_assv |
0f2d19dd JB |
165 | { |
166 | SCM tmp; | |
167 | for(;SCM_NIMP(alist);alist = SCM_CDR(alist)) { | |
168 | SCM_ASRTGO(SCM_CONSP(alist), badlst); | |
169 | tmp = SCM_CAR(alist); | |
0c95b57d | 170 | SCM_ASRTGO(SCM_CONSP(tmp), badlst); |
0b5f3f34 | 171 | if SCM_NFALSEP(scm_eqv_p(SCM_CAR(tmp), key)) return tmp; |
0f2d19dd | 172 | } |
cf7c17e9 | 173 | # ifndef SCM_RECKLESS |
0f2d19dd | 174 | if (!(SCM_NULLP(alist))) |
4638e087 | 175 | badlst: SCM_WTA(2,alist); |
0f2d19dd JB |
176 | # endif |
177 | return SCM_BOOL_F; | |
178 | } | |
1bbd0b84 | 179 | #undef FUNC_NAME |
0f2d19dd JB |
180 | |
181 | ||
3b3b36dd | 182 | SCM_DEFINE (scm_assoc, "assoc", 2, 0, 0, |
0b5f3f34 GB |
183 | (SCM key, SCM alist), |
184 | "Behaves like @code{assq} but uses @code{equal?} for key comparison.") | |
1bbd0b84 | 185 | #define FUNC_NAME s_scm_assoc |
0f2d19dd | 186 | { |
1bbd0b84 GB |
187 | SCM tmp; |
188 | for(;SCM_NIMP(alist);alist = SCM_CDR(alist)) { | |
3b3b36dd | 189 | SCM_VALIDATE_ALISTCELL_COPYSCM (2,alist,tmp); |
0b5f3f34 | 190 | if SCM_NFALSEP(scm_equal_p(SCM_CAR(tmp), key)) return tmp; |
1bbd0b84 | 191 | } |
3b3b36dd | 192 | SCM_VALIDATE_NULL (2,alist); |
1bbd0b84 | 193 | return SCM_BOOL_F; |
0f2d19dd | 194 | } |
1bbd0b84 | 195 | #undef FUNC_NAME |
0f2d19dd JB |
196 | |
197 | ||
198 | \f | |
199 | ||
a1ec6916 | 200 | SCM_DEFINE (scm_assq_ref, "assq-ref", 2, 0, 0, |
1bbd0b84 | 201 | (SCM alist, SCM key), |
4079f87e GB |
202 | "@deffnx primitive assv-ref alist key |
203 | @deffnx primitive assoc-ref alist key | |
204 | Like @code{assq}, @code{assv} and @code{assoc}, except that only the | |
205 | value associated with @var{key} in @var{alist} is returned. These | |
206 | functions are equivalent to | |
207 | ||
208 | @lisp | |
209 | (let ((ent (@var{associator} @var{key} @var{alist}))) | |
210 | (and ent (cdr ent))) | |
211 | @end lisp | |
212 | ||
213 | where @var{associator} is one of @code{assq}, @code{assv} or @code{assoc}.") | |
1bbd0b84 | 214 | #define FUNC_NAME s_scm_assq_ref |
0f2d19dd JB |
215 | { |
216 | SCM handle; | |
217 | ||
218 | handle = scm_sloppy_assq (key, alist); | |
0c95b57d | 219 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
220 | { |
221 | return SCM_CDR (handle); | |
222 | } | |
223 | return SCM_BOOL_F; | |
224 | } | |
1bbd0b84 | 225 | #undef FUNC_NAME |
0f2d19dd JB |
226 | |
227 | ||
a1ec6916 | 228 | SCM_DEFINE (scm_assv_ref, "assv-ref", 2, 0, 0, |
1bbd0b84 | 229 | (SCM alist, SCM key), |
0b5f3f34 | 230 | "Behaves like @code{assq-ref} but uses @code{eqv?} for key comparison.") |
1bbd0b84 | 231 | #define FUNC_NAME s_scm_assv_ref |
0f2d19dd JB |
232 | { |
233 | SCM handle; | |
234 | ||
235 | handle = scm_sloppy_assv (key, alist); | |
0c95b57d | 236 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
237 | { |
238 | return SCM_CDR (handle); | |
239 | } | |
240 | return SCM_BOOL_F; | |
241 | } | |
1bbd0b84 | 242 | #undef FUNC_NAME |
0f2d19dd JB |
243 | |
244 | ||
a1ec6916 | 245 | SCM_DEFINE (scm_assoc_ref, "assoc-ref", 2, 0, 0, |
1bbd0b84 | 246 | (SCM alist, SCM key), |
0b5f3f34 | 247 | "Behaves like @code{assq-ref} but uses @code{equal?} for key comparison.") |
1bbd0b84 | 248 | #define FUNC_NAME s_scm_assoc_ref |
0f2d19dd JB |
249 | { |
250 | SCM handle; | |
251 | ||
252 | handle = scm_sloppy_assoc (key, alist); | |
0c95b57d | 253 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
254 | { |
255 | return SCM_CDR (handle); | |
256 | } | |
257 | return SCM_BOOL_F; | |
258 | } | |
1bbd0b84 | 259 | #undef FUNC_NAME |
0f2d19dd JB |
260 | |
261 | ||
262 | ||
263 | \f | |
264 | ||
265 | ||
a1ec6916 | 266 | SCM_DEFINE (scm_assq_set_x, "assq-set!", 3, 0, 0, |
1bbd0b84 | 267 | (SCM alist, SCM key, SCM val), |
4079f87e GB |
268 | "@deffnx primitive assv-set! alist key value |
269 | @deffnx primitive assoc-set! alist key value | |
270 | Reassociate @var{key} in @var{alist} with @var{value}: find any existing | |
271 | @var{alist} entry for @var{key} and associate it with the new | |
272 | @var{value}. If @var{alist} does not contain an entry for @var{key}, | |
273 | add a new one. Return the (possibly new) alist. | |
274 | ||
275 | These functions do not attempt to verify the structure of @var{alist}, | |
276 | and so may cause unusual results if passed an object that is not an | |
277 | association list.") | |
1bbd0b84 | 278 | #define FUNC_NAME s_scm_assq_set_x |
0f2d19dd JB |
279 | { |
280 | SCM handle; | |
281 | ||
282 | handle = scm_sloppy_assq (key, alist); | |
0c95b57d | 283 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
284 | { |
285 | SCM_SETCDR (handle, val); | |
286 | return alist; | |
287 | } | |
288 | else | |
289 | return scm_acons (key, val, alist); | |
290 | } | |
1bbd0b84 | 291 | #undef FUNC_NAME |
0f2d19dd | 292 | |
a1ec6916 | 293 | SCM_DEFINE (scm_assv_set_x, "assv-set!", 3, 0, 0, |
1bbd0b84 | 294 | (SCM alist, SCM key, SCM val), |
0b5f3f34 | 295 | "Behaves like @code{assq-set!} but uses @code{eqv?} for key comparison.") |
1bbd0b84 | 296 | #define FUNC_NAME s_scm_assv_set_x |
0f2d19dd JB |
297 | { |
298 | SCM handle; | |
299 | ||
300 | handle = scm_sloppy_assv (key, alist); | |
0c95b57d | 301 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
302 | { |
303 | SCM_SETCDR (handle, val); | |
304 | return alist; | |
305 | } | |
306 | else | |
307 | return scm_acons (key, val, alist); | |
308 | } | |
1bbd0b84 | 309 | #undef FUNC_NAME |
0f2d19dd | 310 | |
a1ec6916 | 311 | SCM_DEFINE (scm_assoc_set_x, "assoc-set!", 3, 0, 0, |
1bbd0b84 | 312 | (SCM alist, SCM key, SCM val), |
0b5f3f34 | 313 | "Behaves like @code{assq-set!} but uses @code{equal?} for key comparison.") |
1bbd0b84 | 314 | #define FUNC_NAME s_scm_assoc_set_x |
0f2d19dd JB |
315 | { |
316 | SCM handle; | |
317 | ||
318 | handle = scm_sloppy_assoc (key, alist); | |
0c95b57d | 319 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
320 | { |
321 | SCM_SETCDR (handle, val); | |
322 | return alist; | |
323 | } | |
324 | else | |
325 | return scm_acons (key, val, alist); | |
326 | } | |
1bbd0b84 | 327 | #undef FUNC_NAME |
0f2d19dd JB |
328 | |
329 | ||
330 | \f | |
331 | ||
a1ec6916 | 332 | SCM_DEFINE (scm_assq_remove_x, "assq-remove!", 2, 0, 0, |
1bbd0b84 | 333 | (SCM alist, SCM key), |
4079f87e GB |
334 | "@deffnx primitive assv-remove! alist key |
335 | @deffnx primitive assoc-remove! alist key | |
336 | Delete any entry in @var{alist} associated with @var{key}, and return | |
337 | the resulting alist.") | |
1bbd0b84 | 338 | #define FUNC_NAME s_scm_assq_remove_x |
0f2d19dd JB |
339 | { |
340 | SCM handle; | |
341 | ||
342 | handle = scm_sloppy_assq (key, alist); | |
0c95b57d | 343 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
344 | { |
345 | return scm_delq_x (handle, alist); | |
346 | } | |
347 | else | |
348 | return alist; | |
349 | } | |
1bbd0b84 | 350 | #undef FUNC_NAME |
0f2d19dd JB |
351 | |
352 | ||
a1ec6916 | 353 | SCM_DEFINE (scm_assv_remove_x, "assv-remove!", 2, 0, 0, |
1bbd0b84 | 354 | (SCM alist, SCM key), |
0b5f3f34 | 355 | "Behaves like @code{assq-remove!} but uses @code{eqv?} for key comparison.") |
1bbd0b84 | 356 | #define FUNC_NAME s_scm_assv_remove_x |
0f2d19dd JB |
357 | { |
358 | SCM handle; | |
359 | ||
360 | handle = scm_sloppy_assv (key, alist); | |
0c95b57d | 361 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
362 | { |
363 | return scm_delv_x (handle, alist); | |
364 | } | |
365 | else | |
366 | return alist; | |
367 | } | |
1bbd0b84 | 368 | #undef FUNC_NAME |
0f2d19dd JB |
369 | |
370 | ||
a1ec6916 | 371 | SCM_DEFINE (scm_assoc_remove_x, "assoc-remove!", 2, 0, 0, |
1bbd0b84 | 372 | (SCM alist, SCM key), |
0b5f3f34 | 373 | "Behaves like @code{assq-remove!} but uses @code{equal?} for key comparison.") |
1bbd0b84 | 374 | #define FUNC_NAME s_scm_assoc_remove_x |
0f2d19dd JB |
375 | { |
376 | SCM handle; | |
377 | ||
378 | handle = scm_sloppy_assoc (key, alist); | |
0c95b57d | 379 | if (SCM_CONSP (handle)) |
0f2d19dd JB |
380 | { |
381 | return scm_delete_x (handle, alist); | |
382 | } | |
383 | else | |
384 | return alist; | |
385 | } | |
1bbd0b84 | 386 | #undef FUNC_NAME |
0f2d19dd JB |
387 | |
388 | ||
389 | \f | |
390 | ||
391 | ||
1cc91f1b | 392 | |
0f2d19dd JB |
393 | void |
394 | scm_init_alist () | |
0f2d19dd JB |
395 | { |
396 | #include "alist.x" | |
397 | } | |
398 |