Commit | Line | Data |
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438974d0 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
a0599745 MD |
25 | #include "libguile/_scm.h" |
26 | #include "libguile/eq.h" | |
27 | #include "libguile/root.h" | |
28 | #include "libguile/strings.h" | |
c96d76b8 | 29 | #include "libguile/lang.h" |
a0599745 MD |
30 | |
31 | #include "libguile/validate.h" | |
32 | #include "libguile/vectors.h" | |
f332e957 | 33 | #include "libguile/generalized-vectors.h" |
2fa901a5 | 34 | #include "libguile/arrays.h" |
cf396142 | 35 | #include "libguile/bitvectors.h" |
438974d0 | 36 | #include "libguile/bytevectors.h" |
5d1b3b2d | 37 | #include "libguile/array-map.h" |
88797580 MV |
38 | #include "libguile/srfi-4.h" |
39 | #include "libguile/strings.h" | |
40 | #include "libguile/srfi-13.h" | |
1d0df896 | 41 | #include "libguile/dynwind.h" |
6e708ef2 | 42 | #include "libguile/deprecation.h" |
88797580 | 43 | |
0f2d19dd JB |
44 | \f |
45 | ||
6e708ef2 MV |
46 | #define VECTOR_MAX_LENGTH (SCM_T_BITS_MAX >> 8) |
47 | ||
6e708ef2 MV |
48 | int |
49 | scm_is_vector (SCM obj) | |
50 | { | |
51 | if (SCM_I_IS_VECTOR (obj)) | |
52 | return 1; | |
04b87de5 | 53 | if (SCM_I_ARRAYP (obj) && SCM_I_ARRAY_NDIM (obj) == 1) |
6e708ef2 | 54 | { |
04b87de5 | 55 | SCM v = SCM_I_ARRAY_V (obj); |
6e708ef2 MV |
56 | return SCM_I_IS_VECTOR (v); |
57 | } | |
58 | return 0; | |
59 | } | |
60 | ||
61 | int | |
62 | scm_is_simple_vector (SCM obj) | |
1d0df896 | 63 | { |
6e708ef2 | 64 | return SCM_I_IS_VECTOR (obj); |
1d0df896 MV |
65 | } |
66 | ||
354116f7 MV |
67 | const SCM * |
68 | scm_vector_elements (SCM vec, scm_t_array_handle *h, | |
69 | size_t *lenp, ssize_t *incp) | |
70 | { | |
71 | scm_generalized_vector_get_handle (vec, h); | |
72 | if (lenp) | |
73 | { | |
74 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
75 | *lenp = dim->ubnd - dim->lbnd + 1; | |
76 | *incp = dim->inc; | |
77 | } | |
78 | return scm_array_handle_elements (h); | |
79 | } | |
80 | ||
81 | SCM * | |
82 | scm_vector_writable_elements (SCM vec, scm_t_array_handle *h, | |
83 | size_t *lenp, ssize_t *incp) | |
84 | { | |
85 | scm_generalized_vector_get_handle (vec, h); | |
86 | if (lenp) | |
87 | { | |
88 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
89 | *lenp = dim->ubnd - dim->lbnd + 1; | |
90 | *incp = dim->inc; | |
91 | } | |
92 | return scm_array_handle_writable_elements (h); | |
93 | } | |
94 | ||
a1ec6916 | 95 | SCM_DEFINE (scm_vector_p, "vector?", 1, 0, 0, |
5ffe9968 | 96 | (SCM obj), |
1e6808ea MG |
97 | "Return @code{#t} if @var{obj} is a vector, otherwise return\n" |
98 | "@code{#f}.") | |
1bbd0b84 | 99 | #define FUNC_NAME s_scm_vector_p |
0f2d19dd | 100 | { |
de5c0f58 | 101 | return scm_from_bool (scm_is_vector (obj)); |
0f2d19dd | 102 | } |
1bbd0b84 | 103 | #undef FUNC_NAME |
0f2d19dd | 104 | |
f172c0b7 | 105 | SCM_GPROC (s_vector_length, "vector-length", 1, 0, 0, scm_vector_length, g_vector_length); |
1e6808ea | 106 | /* Returns the number of elements in @var{vector} as an exact integer. */ |
0f2d19dd | 107 | SCM |
f172c0b7 | 108 | scm_vector_length (SCM v) |
0f2d19dd | 109 | { |
6e708ef2 MV |
110 | if (SCM_I_IS_VECTOR (v)) |
111 | return scm_from_size_t (SCM_I_VECTOR_LENGTH (v)); | |
04b87de5 | 112 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 113 | { |
04b87de5 | 114 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
de5c0f58 MV |
115 | return scm_from_size_t (dim->ubnd - dim->lbnd + 1); |
116 | } | |
117 | else | |
118 | SCM_WTA_DISPATCH_1 (g_vector_length, v, 1, NULL); | |
0f2d19dd JB |
119 | } |
120 | ||
88797580 MV |
121 | size_t |
122 | scm_c_vector_length (SCM v) | |
123 | { | |
6e708ef2 MV |
124 | if (SCM_I_IS_VECTOR (v)) |
125 | return SCM_I_VECTOR_LENGTH (v); | |
88797580 | 126 | else |
de5c0f58 | 127 | return scm_to_size_t (scm_vector_length (v)); |
88797580 MV |
128 | } |
129 | ||
f172c0b7 | 130 | SCM_REGISTER_PROC (s_list_to_vector, "list->vector", 1, 0, 0, scm_vector); |
5ffe9968 | 131 | /* |
942e5b91 MG |
132 | "Return a newly created vector initialized to the elements of" |
133 | "the list @var{list}.\n\n" | |
134 | "@lisp\n" | |
135 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
136 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
137 | "@end lisp") | |
5ffe9968 | 138 | */ |
a1ec6916 | 139 | SCM_DEFINE (scm_vector, "vector", 0, 0, 1, |
f172c0b7 | 140 | (SCM l), |
8f85c0c6 NJ |
141 | "@deffnx {Scheme Procedure} list->vector l\n" |
142 | "Return a newly allocated vector composed of the\n" | |
1e6808ea MG |
143 | "given arguments. Analogous to @code{list}.\n" |
144 | "\n" | |
942e5b91 | 145 | "@lisp\n" |
1e6808ea | 146 | "(vector 'a 'b 'c) @result{} #(a b c)\n" |
942e5b91 | 147 | "@end lisp") |
1bbd0b84 | 148 | #define FUNC_NAME s_scm_vector |
0f2d19dd JB |
149 | { |
150 | SCM res; | |
22a52da1 | 151 | SCM *data; |
1d0df896 | 152 | long i, len; |
6e708ef2 | 153 | scm_t_array_handle handle; |
22a52da1 | 154 | |
1d0df896 | 155 | SCM_VALIDATE_LIST_COPYLEN (1, l, len); |
34d19ef6 | 156 | |
6e708ef2 MV |
157 | res = scm_c_make_vector (len, SCM_UNSPECIFIED); |
158 | data = scm_vector_writable_elements (res, &handle, NULL, NULL); | |
1d0df896 | 159 | i = 0; |
c8857a4d | 160 | while (scm_is_pair (l) && i < len) |
22a52da1 | 161 | { |
1d0df896 | 162 | data[i] = SCM_CAR (l); |
22a52da1 | 163 | l = SCM_CDR (l); |
6e708ef2 | 164 | i += 1; |
22a52da1 DH |
165 | } |
166 | ||
c8857a4d MV |
167 | scm_array_handle_release (&handle); |
168 | ||
0f2d19dd JB |
169 | return res; |
170 | } | |
1bbd0b84 | 171 | #undef FUNC_NAME |
0f2d19dd | 172 | |
f172c0b7 | 173 | SCM_GPROC (s_vector_ref, "vector-ref", 2, 0, 0, scm_vector_ref, g_vector_ref); |
1cc91f1b | 174 | |
5ffe9968 GB |
175 | /* |
176 | "@var{k} must be a valid index of @var{vector}.\n" | |
177 | "@samp{Vector-ref} returns the contents of element @var{k} of\n" | |
178 | "@var{vector}.\n\n" | |
942e5b91 MG |
179 | "@lisp\n" |
180 | "(vector-ref '#(1 1 2 3 5 8 13 21) 5) @result{} 8\n" | |
5ffe9968 GB |
181 | "(vector-ref '#(1 1 2 3 5 8 13 21)\n" |
182 | " (let ((i (round (* 2 (acos -1)))))\n" | |
183 | " (if (inexact? i)\n" | |
184 | " (inexact->exact i)\n" | |
942e5b91 MG |
185 | " i))) @result{} 13\n" |
186 | "@end lisp" | |
5ffe9968 GB |
187 | */ |
188 | ||
0f2d19dd | 189 | SCM |
ea633082 | 190 | scm_vector_ref (SCM v, SCM k) |
685c0d71 | 191 | #define FUNC_NAME s_vector_ref |
0f2d19dd | 192 | { |
de5c0f58 | 193 | return scm_c_vector_ref (v, scm_to_size_t (k)); |
0f2d19dd | 194 | } |
685c0d71 | 195 | #undef FUNC_NAME |
0f2d19dd | 196 | |
88797580 MV |
197 | SCM |
198 | scm_c_vector_ref (SCM v, size_t k) | |
199 | { | |
6e708ef2 | 200 | if (SCM_I_IS_VECTOR (v)) |
de5c0f58 | 201 | { |
6e708ef2 | 202 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
de5c0f58 | 203 | scm_out_of_range (NULL, scm_from_size_t (k)); |
6e708ef2 | 204 | return (SCM_I_VECTOR_ELTS(v))[k]; |
de5c0f58 | 205 | } |
04b87de5 | 206 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
88797580 | 207 | { |
04b87de5 MV |
208 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
209 | SCM vv = SCM_I_ARRAY_V (v); | |
6e708ef2 MV |
210 | if (SCM_I_IS_VECTOR (vv)) |
211 | { | |
212 | if (k >= dim->ubnd - dim->lbnd + 1) | |
213 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
04b87de5 | 214 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; |
6e708ef2 MV |
215 | return (SCM_I_VECTOR_ELTS (vv))[k]; |
216 | } | |
217 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 | 218 | } |
de5c0f58 MV |
219 | else |
220 | SCM_WTA_DISPATCH_2 (g_vector_ref, v, scm_from_size_t (k), 2, NULL); | |
88797580 MV |
221 | } |
222 | ||
f172c0b7 | 223 | SCM_GPROC (s_vector_set_x, "vector-set!", 3, 0, 0, scm_vector_set_x, g_vector_set_x); |
1cc91f1b | 224 | |
942e5b91 MG |
225 | /* "@var{k} must be a valid index of @var{vector}.\n" |
226 | "@code{Vector-set!} stores @var{obj} in element @var{k} of @var{vector}.\n" | |
227 | "The value returned by @samp{vector-set!} is unspecified.\n" | |
228 | "@lisp\n" | |
229 | "(let ((vec (vector 0 '(2 2 2 2) "Anna")))\n" | |
230 | " (vector-set! vec 1 '("Sue" "Sue"))\n" | |
231 | " vec) @result{} #(0 ("Sue" "Sue") "Anna")\n" | |
232 | "(vector-set! '#(0 1 2) 1 "doe") @result{} @emph{error} ; constant vector\n" | |
233 | "@end lisp" | |
5ffe9968 GB |
234 | */ |
235 | ||
0f2d19dd | 236 | SCM |
f172c0b7 | 237 | scm_vector_set_x (SCM v, SCM k, SCM obj) |
685c0d71 | 238 | #define FUNC_NAME s_vector_set_x |
0f2d19dd | 239 | { |
de5c0f58 | 240 | scm_c_vector_set_x (v, scm_to_size_t (k), obj); |
60c497a3 | 241 | return SCM_UNSPECIFIED; |
0f2d19dd | 242 | } |
685c0d71 | 243 | #undef FUNC_NAME |
0f2d19dd | 244 | |
de5c0f58 | 245 | void |
88797580 MV |
246 | scm_c_vector_set_x (SCM v, size_t k, SCM obj) |
247 | { | |
6e708ef2 | 248 | if (SCM_I_IS_VECTOR (v)) |
88797580 | 249 | { |
6e708ef2 | 250 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
de5c0f58 | 251 | scm_out_of_range (NULL, scm_from_size_t (k)); |
6e708ef2 | 252 | (SCM_I_VECTOR_WELTS(v))[k] = obj; |
de5c0f58 | 253 | } |
04b87de5 | 254 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 255 | { |
04b87de5 MV |
256 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
257 | SCM vv = SCM_I_ARRAY_V (v); | |
6e708ef2 MV |
258 | if (SCM_I_IS_VECTOR (vv)) |
259 | { | |
260 | if (k >= dim->ubnd - dim->lbnd + 1) | |
261 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
04b87de5 | 262 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; |
6e708ef2 MV |
263 | (SCM_I_VECTOR_WELTS (vv))[k] = obj; |
264 | } | |
265 | else | |
266 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 MV |
267 | } |
268 | else | |
269 | { | |
de5c0f58 MV |
270 | if (SCM_UNPACK (g_vector_set_x)) |
271 | scm_apply_generic (g_vector_set_x, | |
272 | scm_list_3 (v, scm_from_size_t (k), obj)); | |
273 | else | |
274 | scm_wrong_type_arg_msg (NULL, 0, v, "vector"); | |
88797580 MV |
275 | } |
276 | } | |
0f2d19dd | 277 | |
a1ec6916 | 278 | SCM_DEFINE (scm_make_vector, "make-vector", 1, 1, 0, |
1bbd0b84 | 279 | (SCM k, SCM fill), |
1e6808ea | 280 | "Return a newly allocated vector of @var{k} elements. If a\n" |
8f85c0c6 NJ |
281 | "second argument is given, then each position is initialized to\n" |
282 | "@var{fill}. Otherwise the initial contents of each position is\n" | |
1e6808ea | 283 | "unspecified.") |
1bbd0b84 | 284 | #define FUNC_NAME s_scm_make_vector |
0f2d19dd | 285 | { |
6e708ef2 | 286 | size_t l = scm_to_unsigned_integer (k, 0, VECTOR_MAX_LENGTH); |
e11e83f3 | 287 | |
1b9be268 | 288 | if (SCM_UNBNDP (fill)) |
d60cebe2 | 289 | fill = SCM_UNSPECIFIED; |
e11e83f3 MV |
290 | |
291 | return scm_c_make_vector (l, fill); | |
00ffa0e7 KN |
292 | } |
293 | #undef FUNC_NAME | |
294 | ||
e382fdbe | 295 | |
00ffa0e7 | 296 | SCM |
88797580 | 297 | scm_c_make_vector (size_t k, SCM fill) |
00ffa0e7 KN |
298 | #define FUNC_NAME s_scm_make_vector |
299 | { | |
300 | SCM v; | |
6e708ef2 | 301 | SCM *base; |
1b9be268 | 302 | |
e382fdbe DH |
303 | if (k > 0) |
304 | { | |
c014a02e | 305 | unsigned long int j; |
1b9be268 | 306 | |
6e708ef2 | 307 | SCM_ASSERT_RANGE (1, scm_from_ulong (k), k <= VECTOR_MAX_LENGTH); |
1b9be268 | 308 | |
6e708ef2 | 309 | base = scm_gc_malloc (k * sizeof (SCM), "vector"); |
e382fdbe | 310 | for (j = 0; j != k; ++j) |
6e708ef2 | 311 | base[j] = fill; |
e382fdbe DH |
312 | } |
313 | else | |
314 | base = NULL; | |
1b9be268 | 315 | |
6e708ef2 | 316 | v = scm_cell ((k << 8) | scm_tc7_vector, (scm_t_bits) base); |
e382fdbe | 317 | scm_remember_upto_here_1 (fill); |
1b9be268 | 318 | |
0f2d19dd JB |
319 | return v; |
320 | } | |
1bbd0b84 | 321 | #undef FUNC_NAME |
0f2d19dd | 322 | |
6e708ef2 MV |
323 | SCM_DEFINE (scm_vector_copy, "vector-copy", 1, 0, 0, |
324 | (SCM vec), | |
325 | "Return a copy of @var{vec}.") | |
326 | #define FUNC_NAME s_scm_vector_copy | |
327 | { | |
328 | scm_t_array_handle handle; | |
329 | size_t i, len; | |
330 | ssize_t inc; | |
331 | const SCM *src; | |
332 | SCM *dst; | |
333 | ||
334 | src = scm_vector_elements (vec, &handle, &len, &inc); | |
335 | dst = scm_gc_malloc (len * sizeof (SCM), "vector"); | |
336 | for (i = 0; i < len; i++, src += inc) | |
337 | dst[i] = *src; | |
c8857a4d | 338 | scm_array_handle_release (&handle); |
6e708ef2 MV |
339 | |
340 | return scm_cell ((len << 8) | scm_tc7_vector, (scm_t_bits) dst); | |
341 | } | |
342 | #undef FUNC_NAME | |
343 | ||
344 | void | |
345 | scm_i_vector_free (SCM vec) | |
346 | { | |
347 | scm_gc_free (SCM_I_VECTOR_WELTS (vec), | |
348 | SCM_I_VECTOR_LENGTH (vec) * sizeof(SCM), | |
349 | "vector"); | |
350 | } | |
351 | ||
352 | /* Allocate memory for a weak vector on behalf of the caller. The allocated | |
353 | * vector will be of the given weak vector subtype. It will contain size | |
354 | * elements which are initialized with the 'fill' object, or, if 'fill' is | |
355 | * undefined, with an unspecified object. | |
356 | */ | |
357 | SCM | |
358 | scm_i_allocate_weak_vector (scm_t_bits type, SCM size, SCM fill) | |
359 | { | |
360 | size_t c_size; | |
361 | SCM *base; | |
362 | SCM v; | |
363 | ||
364 | c_size = scm_to_unsigned_integer (size, 0, VECTOR_MAX_LENGTH); | |
365 | ||
366 | if (c_size > 0) | |
367 | { | |
368 | size_t j; | |
369 | ||
370 | if (SCM_UNBNDP (fill)) | |
371 | fill = SCM_UNSPECIFIED; | |
372 | ||
373 | base = scm_gc_malloc (c_size * sizeof (SCM), "weak vector"); | |
374 | for (j = 0; j != c_size; ++j) | |
375 | base[j] = fill; | |
376 | } | |
377 | else | |
378 | base = NULL; | |
379 | ||
380 | v = scm_double_cell ((c_size << 8) | scm_tc7_wvect, | |
381 | (scm_t_bits) base, | |
382 | type, | |
383 | SCM_UNPACK (SCM_EOL)); | |
384 | scm_remember_upto_here_1 (fill); | |
385 | ||
386 | return v; | |
387 | } | |
e382fdbe | 388 | |
3b3b36dd | 389 | SCM_DEFINE (scm_vector_to_list, "vector->list", 1, 0, 0, |
1e6808ea | 390 | (SCM v), |
8f85c0c6 | 391 | "Return a newly allocated list composed of the elements of @var{v}.\n" |
1e6808ea | 392 | "\n" |
942e5b91 MG |
393 | "@lisp\n" |
394 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
395 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
396 | "@end lisp") | |
1bbd0b84 | 397 | #define FUNC_NAME s_scm_vector_to_list |
0f2d19dd | 398 | { |
6e708ef2 MV |
399 | SCM res = SCM_EOL; |
400 | const SCM *data; | |
401 | scm_t_array_handle handle; | |
22be72d3 | 402 | size_t i, count, len; |
6e708ef2 MV |
403 | ssize_t inc; |
404 | ||
405 | data = scm_vector_elements (v, &handle, &len, &inc); | |
22be72d3 LC |
406 | for (i = (len - 1) * inc, count = 0; |
407 | count < len; | |
408 | i -= inc, count++) | |
409 | res = scm_cons (data[i], res); | |
410 | ||
c8857a4d | 411 | scm_array_handle_release (&handle); |
6e708ef2 | 412 | return res; |
0f2d19dd | 413 | } |
1bbd0b84 | 414 | #undef FUNC_NAME |
0f2d19dd JB |
415 | |
416 | ||
a1ec6916 | 417 | SCM_DEFINE (scm_vector_fill_x, "vector-fill!", 2, 0, 0, |
1e6808ea | 418 | (SCM v, SCM fill), |
8f85c0c6 | 419 | "Store @var{fill} in every position of @var{vector}. The value\n" |
1e6808ea | 420 | "returned by @code{vector-fill!} is unspecified.") |
1bbd0b84 | 421 | #define FUNC_NAME s_scm_vector_fill_x |
0f2d19dd | 422 | { |
6e708ef2 MV |
423 | scm_t_array_handle handle; |
424 | SCM *data; | |
425 | size_t i, len; | |
426 | ssize_t inc; | |
427 | ||
428 | data = scm_vector_writable_elements (v, &handle, &len, &inc); | |
429 | for (i = 0; i < len; i += inc) | |
430 | data[i] = fill; | |
c8857a4d | 431 | scm_array_handle_release (&handle); |
6e708ef2 | 432 | return SCM_UNSPECIFIED; |
0f2d19dd | 433 | } |
1bbd0b84 | 434 | #undef FUNC_NAME |
0f2d19dd JB |
435 | |
436 | ||
0f2d19dd | 437 | SCM |
354116f7 | 438 | scm_i_vector_equal_p (SCM x, SCM y) |
0f2d19dd | 439 | { |
c014a02e | 440 | long i; |
6e708ef2 MV |
441 | for (i = SCM_I_VECTOR_LENGTH (x) - 1; i >= 0; i--) |
442 | if (scm_is_false (scm_equal_p (SCM_I_VECTOR_ELTS (x)[i], | |
443 | SCM_I_VECTOR_ELTS (y)[i]))) | |
0f2d19dd JB |
444 | return SCM_BOOL_F; |
445 | return SCM_BOOL_T; | |
446 | } | |
447 | ||
448 | ||
a1ec6916 | 449 | SCM_DEFINE (scm_vector_move_left_x, "vector-move-left!", 5, 0, 0, |
1bbd0b84 | 450 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
451 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
452 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
453 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
454 | "@code{vector-move-left!} copies elements in leftmost order.\n" | |
455 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
456 | "same vector, @code{vector-move-left!} is usually appropriate when\n" | |
457 | "@var{start1} is greater than @var{start2}.") | |
1bbd0b84 | 458 | #define FUNC_NAME s_scm_vector_move_left_x |
0f2d19dd | 459 | { |
6e708ef2 MV |
460 | scm_t_array_handle handle1, handle2; |
461 | const SCM *elts1; | |
462 | SCM *elts2; | |
de5c0f58 | 463 | size_t len1, len2; |
6e708ef2 | 464 | ssize_t inc1, inc2; |
a55c2b68 | 465 | size_t i, j, e; |
6e708ef2 MV |
466 | |
467 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
468 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
34d19ef6 | 469 | |
de5c0f58 MV |
470 | i = scm_to_unsigned_integer (start1, 0, len1); |
471 | e = scm_to_unsigned_integer (end1, i, len1); | |
472 | j = scm_to_unsigned_integer (start2, 0, len2 - (i-e)); | |
473 | ||
6e708ef2 MV |
474 | i *= inc1; |
475 | e *= inc1; | |
476 | j *= inc2; | |
477 | for (; i < e; i += inc1, j += inc2) | |
478 | elts2[j] = elts1[i]; | |
479 | ||
c8857a4d MV |
480 | scm_array_handle_release (&handle2); |
481 | scm_array_handle_release (&handle1); | |
482 | ||
0f2d19dd JB |
483 | return SCM_UNSPECIFIED; |
484 | } | |
1bbd0b84 | 485 | #undef FUNC_NAME |
0f2d19dd | 486 | |
a1ec6916 | 487 | SCM_DEFINE (scm_vector_move_right_x, "vector-move-right!", 5, 0, 0, |
1bbd0b84 | 488 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
489 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
490 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
491 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
492 | "@code{vector-move-right!} copies elements in rightmost order.\n" | |
493 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
494 | "same vector, @code{vector-move-right!} is usually appropriate when\n" | |
495 | "@var{start1} is less than @var{start2}.") | |
1bbd0b84 | 496 | #define FUNC_NAME s_scm_vector_move_right_x |
0f2d19dd | 497 | { |
6e708ef2 MV |
498 | scm_t_array_handle handle1, handle2; |
499 | const SCM *elts1; | |
500 | SCM *elts2; | |
de5c0f58 | 501 | size_t len1, len2; |
6e708ef2 | 502 | ssize_t inc1, inc2; |
a55c2b68 | 503 | size_t i, j, e; |
6e708ef2 MV |
504 | |
505 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
506 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
0f2d19dd | 507 | |
de5c0f58 MV |
508 | i = scm_to_unsigned_integer (start1, 0, len1); |
509 | e = scm_to_unsigned_integer (end1, i, len1); | |
510 | j = scm_to_unsigned_integer (start2, 0, len2 - (i-e)); | |
511 | ||
6e708ef2 MV |
512 | i *= inc1; |
513 | e *= inc1; | |
514 | j *= inc2; | |
515 | while (i < e) | |
de5c0f58 | 516 | { |
6e708ef2 MV |
517 | e -= inc1; |
518 | j -= inc2; | |
519 | elts2[j] = elts1[e]; | |
de5c0f58 | 520 | } |
6e708ef2 | 521 | |
c8857a4d MV |
522 | scm_array_handle_release (&handle2); |
523 | scm_array_handle_release (&handle1); | |
524 | ||
0f2d19dd JB |
525 | return SCM_UNSPECIFIED; |
526 | } | |
1bbd0b84 | 527 | #undef FUNC_NAME |
0f2d19dd | 528 | |
438974d0 | 529 | \f |
2a610be5 AW |
530 | static SCM |
531 | vector_handle_ref (scm_t_array_handle *h, size_t idx) | |
532 | { | |
533 | if (idx > h->dims[0].ubnd) | |
534 | scm_out_of_range ("vector-handle-ref", scm_from_size_t (idx)); | |
535 | return ((SCM*)h->elements)[idx]; | |
536 | } | |
537 | ||
538 | static void | |
539 | vector_handle_set (scm_t_array_handle *h, size_t idx, SCM val) | |
540 | { | |
541 | if (idx > h->dims[0].ubnd) | |
542 | scm_out_of_range ("vector-handle-set!", scm_from_size_t (idx)); | |
543 | ((SCM*)h->writable_elements)[idx] = val; | |
544 | } | |
545 | ||
546 | static void | |
547 | vector_get_handle (SCM v, scm_t_array_handle *h) | |
548 | { | |
549 | h->array = v; | |
550 | h->ndims = 1; | |
551 | h->dims = &h->dim0; | |
552 | h->dim0.lbnd = 0; | |
553 | h->dim0.ubnd = SCM_I_VECTOR_LENGTH (v) - 1; | |
554 | h->dim0.inc = 1; | |
555 | h->element_type = SCM_ARRAY_ELEMENT_TYPE_SCM; | |
556 | h->elements = h->writable_elements = SCM_I_VECTOR_WELTS (v); | |
557 | } | |
558 | ||
559 | SCM_ARRAY_IMPLEMENTATION (scm_tc7_vector, 0x7f & ~2, | |
560 | vector_handle_ref, vector_handle_set, | |
561 | vector_get_handle); | |
562 | SCM_ARRAY_IMPLEMENTATION (scm_tc7_wvect, 0x7f & ~2, | |
563 | vector_handle_ref, vector_handle_set, | |
564 | vector_get_handle); | |
f45eccff AW |
565 | SCM_VECTOR_IMPLEMENTATION (SCM_ARRAY_ELEMENT_TYPE_SCM, scm_make_vector); |
566 | ||
1cc91f1b | 567 | |
0f2d19dd JB |
568 | void |
569 | scm_init_vectors () | |
0f2d19dd | 570 | { |
7c33806a DH |
571 | scm_nullvect = scm_c_make_vector (0, SCM_UNDEFINED); |
572 | ||
a0599745 | 573 | #include "libguile/vectors.x" |
0f2d19dd JB |
574 | } |
575 | ||
89e00824 ML |
576 | |
577 | /* | |
578 | Local Variables: | |
579 | c-file-style: "gnu" | |
580 | End: | |
581 | */ |