Commit | Line | Data |
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6922d92f LC |
1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2006, 2008, 2009, 2010, |
2 | * 2011, 2012 Free Software Foundation, Inc. | |
3 | * | |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd | 21 | \f |
dbb605f5 LC |
22 | #ifdef HAVE_CONFIG_H |
23 | # include <config.h> | |
24 | #endif | |
0f2d19dd | 25 | |
a0599745 MD |
26 | #include "libguile/_scm.h" |
27 | #include "libguile/eq.h" | |
28 | #include "libguile/root.h" | |
29 | #include "libguile/strings.h" | |
30 | ||
31 | #include "libguile/validate.h" | |
32 | #include "libguile/vectors.h" | |
5c39373f | 33 | #include "libguile/arrays.h" /* Hit me with the ugly stick */ |
f332e957 | 34 | #include "libguile/generalized-vectors.h" |
88797580 MV |
35 | #include "libguile/strings.h" |
36 | #include "libguile/srfi-13.h" | |
1d0df896 | 37 | #include "libguile/dynwind.h" |
6e708ef2 | 38 | #include "libguile/deprecation.h" |
88797580 | 39 | |
1c44468d | 40 | #include "libguile/bdw-gc.h" |
3a2de079 LC |
41 | |
42 | ||
0f2d19dd JB |
43 | \f |
44 | ||
6e708ef2 MV |
45 | #define VECTOR_MAX_LENGTH (SCM_T_BITS_MAX >> 8) |
46 | ||
6e708ef2 MV |
47 | int |
48 | scm_is_vector (SCM obj) | |
49 | { | |
50 | if (SCM_I_IS_VECTOR (obj)) | |
51 | return 1; | |
04b87de5 | 52 | if (SCM_I_ARRAYP (obj) && SCM_I_ARRAY_NDIM (obj) == 1) |
6e708ef2 | 53 | { |
04b87de5 | 54 | SCM v = SCM_I_ARRAY_V (obj); |
6e708ef2 MV |
55 | return SCM_I_IS_VECTOR (v); |
56 | } | |
57 | return 0; | |
58 | } | |
59 | ||
60 | int | |
61 | scm_is_simple_vector (SCM obj) | |
1d0df896 | 62 | { |
6e708ef2 | 63 | return SCM_I_IS_VECTOR (obj); |
1d0df896 MV |
64 | } |
65 | ||
354116f7 MV |
66 | const SCM * |
67 | scm_vector_elements (SCM vec, scm_t_array_handle *h, | |
68 | size_t *lenp, ssize_t *incp) | |
69 | { | |
3a2de079 | 70 | if (SCM_I_WVECTP (vec)) |
a141db86 | 71 | scm_wrong_type_arg_msg (NULL, 0, vec, "non-weak vector"); |
3a2de079 | 72 | |
354116f7 MV |
73 | scm_generalized_vector_get_handle (vec, h); |
74 | if (lenp) | |
75 | { | |
76 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
77 | *lenp = dim->ubnd - dim->lbnd + 1; | |
78 | *incp = dim->inc; | |
79 | } | |
80 | return scm_array_handle_elements (h); | |
81 | } | |
82 | ||
83 | SCM * | |
84 | scm_vector_writable_elements (SCM vec, scm_t_array_handle *h, | |
85 | size_t *lenp, ssize_t *incp) | |
86 | { | |
3a2de079 | 87 | if (SCM_I_WVECTP (vec)) |
a141db86 | 88 | scm_wrong_type_arg_msg (NULL, 0, vec, "non-weak vector"); |
3a2de079 | 89 | |
354116f7 MV |
90 | scm_generalized_vector_get_handle (vec, h); |
91 | if (lenp) | |
92 | { | |
93 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
94 | *lenp = dim->ubnd - dim->lbnd + 1; | |
95 | *incp = dim->inc; | |
96 | } | |
97 | return scm_array_handle_writable_elements (h); | |
98 | } | |
99 | ||
a1ec6916 | 100 | SCM_DEFINE (scm_vector_p, "vector?", 1, 0, 0, |
5ffe9968 | 101 | (SCM obj), |
1e6808ea MG |
102 | "Return @code{#t} if @var{obj} is a vector, otherwise return\n" |
103 | "@code{#f}.") | |
1bbd0b84 | 104 | #define FUNC_NAME s_scm_vector_p |
0f2d19dd | 105 | { |
de5c0f58 | 106 | return scm_from_bool (scm_is_vector (obj)); |
0f2d19dd | 107 | } |
1bbd0b84 | 108 | #undef FUNC_NAME |
0f2d19dd | 109 | |
f172c0b7 | 110 | SCM_GPROC (s_vector_length, "vector-length", 1, 0, 0, scm_vector_length, g_vector_length); |
1e6808ea | 111 | /* Returns the number of elements in @var{vector} as an exact integer. */ |
0f2d19dd | 112 | SCM |
f172c0b7 | 113 | scm_vector_length (SCM v) |
0f2d19dd | 114 | { |
6e708ef2 MV |
115 | if (SCM_I_IS_VECTOR (v)) |
116 | return scm_from_size_t (SCM_I_VECTOR_LENGTH (v)); | |
04b87de5 | 117 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 118 | { |
04b87de5 | 119 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
de5c0f58 MV |
120 | return scm_from_size_t (dim->ubnd - dim->lbnd + 1); |
121 | } | |
122 | else | |
fa075d40 | 123 | return scm_wta_dispatch_1 (g_vector_length, v, 1, "vector-length"); |
0f2d19dd JB |
124 | } |
125 | ||
88797580 MV |
126 | size_t |
127 | scm_c_vector_length (SCM v) | |
128 | { | |
6e708ef2 MV |
129 | if (SCM_I_IS_VECTOR (v)) |
130 | return SCM_I_VECTOR_LENGTH (v); | |
88797580 | 131 | else |
de5c0f58 | 132 | return scm_to_size_t (scm_vector_length (v)); |
88797580 MV |
133 | } |
134 | ||
f172c0b7 | 135 | SCM_REGISTER_PROC (s_list_to_vector, "list->vector", 1, 0, 0, scm_vector); |
5ffe9968 | 136 | /* |
942e5b91 MG |
137 | "Return a newly created vector initialized to the elements of" |
138 | "the list @var{list}.\n\n" | |
139 | "@lisp\n" | |
140 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
141 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
142 | "@end lisp") | |
5ffe9968 | 143 | */ |
a1ec6916 | 144 | SCM_DEFINE (scm_vector, "vector", 0, 0, 1, |
f172c0b7 | 145 | (SCM l), |
8f85c0c6 NJ |
146 | "@deffnx {Scheme Procedure} list->vector l\n" |
147 | "Return a newly allocated vector composed of the\n" | |
1e6808ea MG |
148 | "given arguments. Analogous to @code{list}.\n" |
149 | "\n" | |
942e5b91 | 150 | "@lisp\n" |
1e6808ea | 151 | "(vector 'a 'b 'c) @result{} #(a b c)\n" |
942e5b91 | 152 | "@end lisp") |
1bbd0b84 | 153 | #define FUNC_NAME s_scm_vector |
0f2d19dd JB |
154 | { |
155 | SCM res; | |
22a52da1 | 156 | SCM *data; |
1d0df896 | 157 | long i, len; |
6e708ef2 | 158 | scm_t_array_handle handle; |
22a52da1 | 159 | |
1d0df896 | 160 | SCM_VALIDATE_LIST_COPYLEN (1, l, len); |
34d19ef6 | 161 | |
6e708ef2 MV |
162 | res = scm_c_make_vector (len, SCM_UNSPECIFIED); |
163 | data = scm_vector_writable_elements (res, &handle, NULL, NULL); | |
1d0df896 | 164 | i = 0; |
c8857a4d | 165 | while (scm_is_pair (l) && i < len) |
22a52da1 | 166 | { |
1d0df896 | 167 | data[i] = SCM_CAR (l); |
22a52da1 | 168 | l = SCM_CDR (l); |
6e708ef2 | 169 | i += 1; |
22a52da1 DH |
170 | } |
171 | ||
c8857a4d MV |
172 | scm_array_handle_release (&handle); |
173 | ||
0f2d19dd JB |
174 | return res; |
175 | } | |
1bbd0b84 | 176 | #undef FUNC_NAME |
0f2d19dd | 177 | |
f172c0b7 | 178 | SCM_GPROC (s_vector_ref, "vector-ref", 2, 0, 0, scm_vector_ref, g_vector_ref); |
1cc91f1b | 179 | |
5ffe9968 GB |
180 | /* |
181 | "@var{k} must be a valid index of @var{vector}.\n" | |
182 | "@samp{Vector-ref} returns the contents of element @var{k} of\n" | |
183 | "@var{vector}.\n\n" | |
942e5b91 MG |
184 | "@lisp\n" |
185 | "(vector-ref '#(1 1 2 3 5 8 13 21) 5) @result{} 8\n" | |
5ffe9968 GB |
186 | "(vector-ref '#(1 1 2 3 5 8 13 21)\n" |
187 | " (let ((i (round (* 2 (acos -1)))))\n" | |
188 | " (if (inexact? i)\n" | |
189 | " (inexact->exact i)\n" | |
942e5b91 MG |
190 | " i))) @result{} 13\n" |
191 | "@end lisp" | |
5ffe9968 GB |
192 | */ |
193 | ||
0f2d19dd | 194 | SCM |
ea633082 | 195 | scm_vector_ref (SCM v, SCM k) |
685c0d71 | 196 | #define FUNC_NAME s_vector_ref |
0f2d19dd | 197 | { |
de5c0f58 | 198 | return scm_c_vector_ref (v, scm_to_size_t (k)); |
0f2d19dd | 199 | } |
685c0d71 | 200 | #undef FUNC_NAME |
0f2d19dd | 201 | |
88797580 MV |
202 | SCM |
203 | scm_c_vector_ref (SCM v, size_t k) | |
204 | { | |
a141db86 | 205 | if (SCM_I_IS_NONWEAK_VECTOR (v)) |
de5c0f58 | 206 | { |
6e708ef2 | 207 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
3a2de079 | 208 | scm_out_of_range (NULL, scm_from_size_t (k)); |
a141db86 | 209 | return SCM_SIMPLE_VECTOR_REF (v, k); |
de5c0f58 | 210 | } |
a141db86 AW |
211 | else if (SCM_I_WVECTP (v)) |
212 | return scm_c_weak_vector_ref (v, k); | |
04b87de5 | 213 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
88797580 | 214 | { |
04b87de5 MV |
215 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
216 | SCM vv = SCM_I_ARRAY_V (v); | |
a141db86 AW |
217 | |
218 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; | |
219 | if (k >= dim->ubnd - dim->lbnd + 1) | |
220 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
221 | ||
222 | if (SCM_I_IS_NONWEAK_VECTOR (vv)) | |
223 | return SCM_SIMPLE_VECTOR_REF (vv, k); | |
224 | else if (SCM_I_WVECTP (vv)) | |
225 | return scm_c_weak_vector_ref (vv, k); | |
226 | else | |
227 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 | 228 | } |
de5c0f58 | 229 | else |
fa075d40 AW |
230 | return scm_wta_dispatch_2 (g_vector_ref, v, scm_from_size_t (k), 2, |
231 | "vector-ref"); | |
88797580 MV |
232 | } |
233 | ||
f172c0b7 | 234 | SCM_GPROC (s_vector_set_x, "vector-set!", 3, 0, 0, scm_vector_set_x, g_vector_set_x); |
1cc91f1b | 235 | |
942e5b91 MG |
236 | /* "@var{k} must be a valid index of @var{vector}.\n" |
237 | "@code{Vector-set!} stores @var{obj} in element @var{k} of @var{vector}.\n" | |
238 | "The value returned by @samp{vector-set!} is unspecified.\n" | |
239 | "@lisp\n" | |
240 | "(let ((vec (vector 0 '(2 2 2 2) "Anna")))\n" | |
241 | " (vector-set! vec 1 '("Sue" "Sue"))\n" | |
242 | " vec) @result{} #(0 ("Sue" "Sue") "Anna")\n" | |
243 | "(vector-set! '#(0 1 2) 1 "doe") @result{} @emph{error} ; constant vector\n" | |
244 | "@end lisp" | |
5ffe9968 GB |
245 | */ |
246 | ||
0f2d19dd | 247 | SCM |
f172c0b7 | 248 | scm_vector_set_x (SCM v, SCM k, SCM obj) |
685c0d71 | 249 | #define FUNC_NAME s_vector_set_x |
0f2d19dd | 250 | { |
de5c0f58 | 251 | scm_c_vector_set_x (v, scm_to_size_t (k), obj); |
60c497a3 | 252 | return SCM_UNSPECIFIED; |
0f2d19dd | 253 | } |
685c0d71 | 254 | #undef FUNC_NAME |
0f2d19dd | 255 | |
de5c0f58 | 256 | void |
88797580 MV |
257 | scm_c_vector_set_x (SCM v, size_t k, SCM obj) |
258 | { | |
a141db86 | 259 | if (SCM_I_IS_NONWEAK_VECTOR (v)) |
88797580 | 260 | { |
6e708ef2 | 261 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
a141db86 AW |
262 | scm_out_of_range (NULL, scm_from_size_t (k)); |
263 | SCM_SIMPLE_VECTOR_SET (v, k, obj); | |
de5c0f58 | 264 | } |
a141db86 AW |
265 | else if (SCM_I_WVECTP (v)) |
266 | scm_c_weak_vector_set_x (v, k, obj); | |
04b87de5 | 267 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 268 | { |
04b87de5 MV |
269 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
270 | SCM vv = SCM_I_ARRAY_V (v); | |
a141db86 AW |
271 | |
272 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; | |
273 | if (k >= dim->ubnd - dim->lbnd + 1) | |
274 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
275 | ||
276 | if (SCM_I_IS_NONWEAK_VECTOR (vv)) | |
277 | SCM_SIMPLE_VECTOR_SET (vv, k, obj); | |
278 | else if (SCM_I_WVECTP (vv)) | |
279 | scm_c_weak_vector_set_x (vv, k, obj); | |
6e708ef2 MV |
280 | else |
281 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 MV |
282 | } |
283 | else | |
284 | { | |
de5c0f58 | 285 | if (SCM_UNPACK (g_vector_set_x)) |
fa075d40 AW |
286 | scm_wta_dispatch_n (g_vector_set_x, |
287 | scm_list_3 (v, scm_from_size_t (k), obj), | |
288 | 0, | |
289 | "vector-set!"); | |
de5c0f58 MV |
290 | else |
291 | scm_wrong_type_arg_msg (NULL, 0, v, "vector"); | |
88797580 MV |
292 | } |
293 | } | |
0f2d19dd | 294 | |
a1ec6916 | 295 | SCM_DEFINE (scm_make_vector, "make-vector", 1, 1, 0, |
1bbd0b84 | 296 | (SCM k, SCM fill), |
1e6808ea | 297 | "Return a newly allocated vector of @var{k} elements. If a\n" |
8f85c0c6 NJ |
298 | "second argument is given, then each position is initialized to\n" |
299 | "@var{fill}. Otherwise the initial contents of each position is\n" | |
1e6808ea | 300 | "unspecified.") |
1bbd0b84 | 301 | #define FUNC_NAME s_scm_make_vector |
0f2d19dd | 302 | { |
6e708ef2 | 303 | size_t l = scm_to_unsigned_integer (k, 0, VECTOR_MAX_LENGTH); |
e11e83f3 | 304 | |
1b9be268 | 305 | if (SCM_UNBNDP (fill)) |
d60cebe2 | 306 | fill = SCM_UNSPECIFIED; |
e11e83f3 MV |
307 | |
308 | return scm_c_make_vector (l, fill); | |
00ffa0e7 KN |
309 | } |
310 | #undef FUNC_NAME | |
311 | ||
e382fdbe | 312 | |
00ffa0e7 | 313 | SCM |
88797580 | 314 | scm_c_make_vector (size_t k, SCM fill) |
00ffa0e7 KN |
315 | #define FUNC_NAME s_scm_make_vector |
316 | { | |
a141db86 AW |
317 | SCM vector; |
318 | unsigned long int j; | |
ed7e0765 | 319 | |
a141db86 | 320 | SCM_ASSERT_RANGE (1, scm_from_size_t (k), k <= VECTOR_MAX_LENGTH); |
1b9be268 | 321 | |
a141db86 | 322 | vector = scm_words ((k << 8) | scm_tc7_vector, k + 1); |
1b9be268 | 323 | |
a141db86 AW |
324 | for (j = 0; j < k; ++j) |
325 | SCM_SIMPLE_VECTOR_SET (vector, j, fill); | |
1b9be268 | 326 | |
a141db86 | 327 | return vector; |
0f2d19dd | 328 | } |
1bbd0b84 | 329 | #undef FUNC_NAME |
0f2d19dd | 330 | |
6e708ef2 MV |
331 | SCM_DEFINE (scm_vector_copy, "vector-copy", 1, 0, 0, |
332 | (SCM vec), | |
333 | "Return a copy of @var{vec}.") | |
334 | #define FUNC_NAME s_scm_vector_copy | |
335 | { | |
336 | scm_t_array_handle handle; | |
337 | size_t i, len; | |
338 | ssize_t inc; | |
339 | const SCM *src; | |
ed7e0765 | 340 | SCM result, *dst; |
6e708ef2 MV |
341 | |
342 | src = scm_vector_elements (vec, &handle, &len, &inc); | |
ed7e0765 LC |
343 | |
344 | result = scm_c_make_vector (len, SCM_UNDEFINED); | |
345 | dst = SCM_I_VECTOR_WELTS (result); | |
6e708ef2 MV |
346 | for (i = 0; i < len; i++, src += inc) |
347 | dst[i] = *src; | |
ed7e0765 | 348 | |
c8857a4d | 349 | scm_array_handle_release (&handle); |
6e708ef2 | 350 | |
ed7e0765 | 351 | return result; |
6e708ef2 MV |
352 | } |
353 | #undef FUNC_NAME | |
354 | ||
d525e4f9 | 355 | \f |
3b3b36dd | 356 | SCM_DEFINE (scm_vector_to_list, "vector->list", 1, 0, 0, |
1e6808ea | 357 | (SCM v), |
8f85c0c6 | 358 | "Return a newly allocated list composed of the elements of @var{v}.\n" |
1e6808ea | 359 | "\n" |
942e5b91 MG |
360 | "@lisp\n" |
361 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
362 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
363 | "@end lisp") | |
1bbd0b84 | 364 | #define FUNC_NAME s_scm_vector_to_list |
0f2d19dd | 365 | { |
6e708ef2 MV |
366 | SCM res = SCM_EOL; |
367 | const SCM *data; | |
368 | scm_t_array_handle handle; | |
22be72d3 | 369 | size_t i, count, len; |
6e708ef2 MV |
370 | ssize_t inc; |
371 | ||
372 | data = scm_vector_elements (v, &handle, &len, &inc); | |
22be72d3 LC |
373 | for (i = (len - 1) * inc, count = 0; |
374 | count < len; | |
375 | i -= inc, count++) | |
376 | res = scm_cons (data[i], res); | |
377 | ||
c8857a4d | 378 | scm_array_handle_release (&handle); |
6e708ef2 | 379 | return res; |
0f2d19dd | 380 | } |
1bbd0b84 | 381 | #undef FUNC_NAME |
0f2d19dd JB |
382 | |
383 | ||
a1ec6916 | 384 | SCM_DEFINE (scm_vector_fill_x, "vector-fill!", 2, 0, 0, |
1e6808ea | 385 | (SCM v, SCM fill), |
8f85c0c6 | 386 | "Store @var{fill} in every position of @var{vector}. The value\n" |
1e6808ea | 387 | "returned by @code{vector-fill!} is unspecified.") |
1bbd0b84 | 388 | #define FUNC_NAME s_scm_vector_fill_x |
0f2d19dd | 389 | { |
6e708ef2 MV |
390 | scm_t_array_handle handle; |
391 | SCM *data; | |
392 | size_t i, len; | |
393 | ssize_t inc; | |
394 | ||
395 | data = scm_vector_writable_elements (v, &handle, &len, &inc); | |
396 | for (i = 0; i < len; i += inc) | |
397 | data[i] = fill; | |
c8857a4d | 398 | scm_array_handle_release (&handle); |
6e708ef2 | 399 | return SCM_UNSPECIFIED; |
0f2d19dd | 400 | } |
1bbd0b84 | 401 | #undef FUNC_NAME |
0f2d19dd JB |
402 | |
403 | ||
0f2d19dd | 404 | SCM |
354116f7 | 405 | scm_i_vector_equal_p (SCM x, SCM y) |
0f2d19dd | 406 | { |
c014a02e | 407 | long i; |
6e708ef2 MV |
408 | for (i = SCM_I_VECTOR_LENGTH (x) - 1; i >= 0; i--) |
409 | if (scm_is_false (scm_equal_p (SCM_I_VECTOR_ELTS (x)[i], | |
410 | SCM_I_VECTOR_ELTS (y)[i]))) | |
0f2d19dd JB |
411 | return SCM_BOOL_F; |
412 | return SCM_BOOL_T; | |
413 | } | |
414 | ||
415 | ||
a1ec6916 | 416 | SCM_DEFINE (scm_vector_move_left_x, "vector-move-left!", 5, 0, 0, |
1bbd0b84 | 417 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
418 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
419 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
420 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
421 | "@code{vector-move-left!} copies elements in leftmost order.\n" | |
422 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
423 | "same vector, @code{vector-move-left!} is usually appropriate when\n" | |
424 | "@var{start1} is greater than @var{start2}.") | |
1bbd0b84 | 425 | #define FUNC_NAME s_scm_vector_move_left_x |
0f2d19dd | 426 | { |
6e708ef2 MV |
427 | scm_t_array_handle handle1, handle2; |
428 | const SCM *elts1; | |
429 | SCM *elts2; | |
de5c0f58 | 430 | size_t len1, len2; |
6e708ef2 | 431 | ssize_t inc1, inc2; |
a55c2b68 | 432 | size_t i, j, e; |
6e708ef2 MV |
433 | |
434 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
435 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
34d19ef6 | 436 | |
de5c0f58 MV |
437 | i = scm_to_unsigned_integer (start1, 0, len1); |
438 | e = scm_to_unsigned_integer (end1, i, len1); | |
ca659673 | 439 | SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) <= len2); |
551b96d2 AW |
440 | j = scm_to_unsigned_integer (start2, 0, len2); |
441 | SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); | |
de5c0f58 | 442 | |
6e708ef2 MV |
443 | i *= inc1; |
444 | e *= inc1; | |
445 | j *= inc2; | |
446 | for (; i < e; i += inc1, j += inc2) | |
447 | elts2[j] = elts1[i]; | |
448 | ||
c8857a4d MV |
449 | scm_array_handle_release (&handle2); |
450 | scm_array_handle_release (&handle1); | |
451 | ||
0f2d19dd JB |
452 | return SCM_UNSPECIFIED; |
453 | } | |
1bbd0b84 | 454 | #undef FUNC_NAME |
0f2d19dd | 455 | |
a1ec6916 | 456 | SCM_DEFINE (scm_vector_move_right_x, "vector-move-right!", 5, 0, 0, |
1bbd0b84 | 457 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
458 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
459 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
460 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
461 | "@code{vector-move-right!} copies elements in rightmost order.\n" | |
462 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
463 | "same vector, @code{vector-move-right!} is usually appropriate when\n" | |
464 | "@var{start1} is less than @var{start2}.") | |
1bbd0b84 | 465 | #define FUNC_NAME s_scm_vector_move_right_x |
0f2d19dd | 466 | { |
6e708ef2 MV |
467 | scm_t_array_handle handle1, handle2; |
468 | const SCM *elts1; | |
469 | SCM *elts2; | |
de5c0f58 | 470 | size_t len1, len2; |
6e708ef2 | 471 | ssize_t inc1, inc2; |
a55c2b68 | 472 | size_t i, j, e; |
6e708ef2 MV |
473 | |
474 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
475 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
0f2d19dd | 476 | |
de5c0f58 MV |
477 | i = scm_to_unsigned_integer (start1, 0, len1); |
478 | e = scm_to_unsigned_integer (end1, i, len1); | |
ca659673 | 479 | SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) <= len2); |
551b96d2 AW |
480 | j = scm_to_unsigned_integer (start2, 0, len2); |
481 | SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); | |
482 | ||
483 | j += (e - i); | |
de5c0f58 | 484 | |
6e708ef2 MV |
485 | i *= inc1; |
486 | e *= inc1; | |
487 | j *= inc2; | |
488 | while (i < e) | |
de5c0f58 | 489 | { |
6e708ef2 MV |
490 | e -= inc1; |
491 | j -= inc2; | |
492 | elts2[j] = elts1[e]; | |
de5c0f58 | 493 | } |
6e708ef2 | 494 | |
c8857a4d MV |
495 | scm_array_handle_release (&handle2); |
496 | scm_array_handle_release (&handle1); | |
497 | ||
0f2d19dd JB |
498 | return SCM_UNSPECIFIED; |
499 | } | |
1bbd0b84 | 500 | #undef FUNC_NAME |
0f2d19dd | 501 | |
438974d0 | 502 | \f |
2a610be5 AW |
503 | static SCM |
504 | vector_handle_ref (scm_t_array_handle *h, size_t idx) | |
88797580 | 505 | { |
2a610be5 AW |
506 | if (idx > h->dims[0].ubnd) |
507 | scm_out_of_range ("vector-handle-ref", scm_from_size_t (idx)); | |
508 | return ((SCM*)h->elements)[idx]; | |
88797580 MV |
509 | } |
510 | ||
2a610be5 AW |
511 | static void |
512 | vector_handle_set (scm_t_array_handle *h, size_t idx, SCM val) | |
88797580 | 513 | { |
2a610be5 AW |
514 | if (idx > h->dims[0].ubnd) |
515 | scm_out_of_range ("vector-handle-set!", scm_from_size_t (idx)); | |
516 | ((SCM*)h->writable_elements)[idx] = val; | |
88797580 | 517 | } |
88797580 | 518 | |
2a610be5 AW |
519 | static void |
520 | vector_get_handle (SCM v, scm_t_array_handle *h) | |
88797580 | 521 | { |
2a610be5 AW |
522 | h->array = v; |
523 | h->ndims = 1; | |
524 | h->dims = &h->dim0; | |
525 | h->dim0.lbnd = 0; | |
526 | h->dim0.ubnd = SCM_I_VECTOR_LENGTH (v) - 1; | |
527 | h->dim0.inc = 1; | |
528 | h->element_type = SCM_ARRAY_ELEMENT_TYPE_SCM; | |
529 | h->elements = h->writable_elements = SCM_I_VECTOR_WELTS (v); | |
88797580 MV |
530 | } |
531 | ||
c5f17102 AW |
532 | /* the & ~2 allows catching scm_tc7_wvect as well. needs changing if you change |
533 | tags.h. */ | |
2a610be5 AW |
534 | SCM_ARRAY_IMPLEMENTATION (scm_tc7_vector, 0x7f & ~2, |
535 | vector_handle_ref, vector_handle_set, | |
f65e0168 | 536 | vector_get_handle) |
f65e0168 | 537 | SCM_VECTOR_IMPLEMENTATION (SCM_ARRAY_ELEMENT_TYPE_SCM, scm_make_vector) |
88797580 | 538 | |
1cc91f1b | 539 | |
0f2d19dd JB |
540 | void |
541 | scm_init_vectors () | |
0f2d19dd | 542 | { |
a0599745 | 543 | #include "libguile/vectors.x" |
0f2d19dd JB |
544 | } |
545 | ||
89e00824 ML |
546 | |
547 | /* | |
548 | Local Variables: | |
549 | c-file-style: "gnu" | |
550 | End: | |
551 | */ |