Commit | Line | Data |
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b2b33168 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2006, 2008, 2009, 2010, 2011 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" | |
29 | ||
30 | #include "libguile/validate.h" | |
31 | #include "libguile/vectors.h" | |
5c39373f | 32 | #include "libguile/arrays.h" /* Hit me with the ugly stick */ |
f332e957 | 33 | #include "libguile/generalized-vectors.h" |
88797580 MV |
34 | #include "libguile/strings.h" |
35 | #include "libguile/srfi-13.h" | |
1d0df896 | 36 | #include "libguile/dynwind.h" |
6e708ef2 | 37 | #include "libguile/deprecation.h" |
88797580 | 38 | |
1c44468d | 39 | #include "libguile/bdw-gc.h" |
3a2de079 LC |
40 | |
41 | ||
0f2d19dd JB |
42 | \f |
43 | ||
6e708ef2 MV |
44 | #define VECTOR_MAX_LENGTH (SCM_T_BITS_MAX >> 8) |
45 | ||
6e708ef2 MV |
46 | int |
47 | scm_is_vector (SCM obj) | |
48 | { | |
49 | if (SCM_I_IS_VECTOR (obj)) | |
50 | return 1; | |
04b87de5 | 51 | if (SCM_I_ARRAYP (obj) && SCM_I_ARRAY_NDIM (obj) == 1) |
6e708ef2 | 52 | { |
04b87de5 | 53 | SCM v = SCM_I_ARRAY_V (obj); |
6e708ef2 MV |
54 | return SCM_I_IS_VECTOR (v); |
55 | } | |
56 | return 0; | |
57 | } | |
58 | ||
59 | int | |
60 | scm_is_simple_vector (SCM obj) | |
1d0df896 | 61 | { |
6e708ef2 | 62 | return SCM_I_IS_VECTOR (obj); |
1d0df896 MV |
63 | } |
64 | ||
354116f7 MV |
65 | const SCM * |
66 | scm_vector_elements (SCM vec, scm_t_array_handle *h, | |
67 | size_t *lenp, ssize_t *incp) | |
68 | { | |
3a2de079 | 69 | if (SCM_I_WVECTP (vec)) |
a141db86 | 70 | scm_wrong_type_arg_msg (NULL, 0, vec, "non-weak vector"); |
3a2de079 | 71 | |
354116f7 MV |
72 | scm_generalized_vector_get_handle (vec, h); |
73 | if (lenp) | |
74 | { | |
75 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
76 | *lenp = dim->ubnd - dim->lbnd + 1; | |
77 | *incp = dim->inc; | |
78 | } | |
79 | return scm_array_handle_elements (h); | |
80 | } | |
81 | ||
82 | SCM * | |
83 | scm_vector_writable_elements (SCM vec, scm_t_array_handle *h, | |
84 | size_t *lenp, ssize_t *incp) | |
85 | { | |
3a2de079 | 86 | if (SCM_I_WVECTP (vec)) |
a141db86 | 87 | scm_wrong_type_arg_msg (NULL, 0, vec, "non-weak vector"); |
3a2de079 | 88 | |
354116f7 MV |
89 | scm_generalized_vector_get_handle (vec, h); |
90 | if (lenp) | |
91 | { | |
92 | scm_t_array_dim *dim = scm_array_handle_dims (h); | |
93 | *lenp = dim->ubnd - dim->lbnd + 1; | |
94 | *incp = dim->inc; | |
95 | } | |
96 | return scm_array_handle_writable_elements (h); | |
97 | } | |
98 | ||
a1ec6916 | 99 | SCM_DEFINE (scm_vector_p, "vector?", 1, 0, 0, |
5ffe9968 | 100 | (SCM obj), |
1e6808ea MG |
101 | "Return @code{#t} if @var{obj} is a vector, otherwise return\n" |
102 | "@code{#f}.") | |
1bbd0b84 | 103 | #define FUNC_NAME s_scm_vector_p |
0f2d19dd | 104 | { |
de5c0f58 | 105 | return scm_from_bool (scm_is_vector (obj)); |
0f2d19dd | 106 | } |
1bbd0b84 | 107 | #undef FUNC_NAME |
0f2d19dd | 108 | |
f172c0b7 | 109 | SCM_GPROC (s_vector_length, "vector-length", 1, 0, 0, scm_vector_length, g_vector_length); |
1e6808ea | 110 | /* Returns the number of elements in @var{vector} as an exact integer. */ |
0f2d19dd | 111 | SCM |
f172c0b7 | 112 | scm_vector_length (SCM v) |
0f2d19dd | 113 | { |
6e708ef2 MV |
114 | if (SCM_I_IS_VECTOR (v)) |
115 | return scm_from_size_t (SCM_I_VECTOR_LENGTH (v)); | |
04b87de5 | 116 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 117 | { |
04b87de5 | 118 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
de5c0f58 MV |
119 | return scm_from_size_t (dim->ubnd - dim->lbnd + 1); |
120 | } | |
121 | else | |
fa075d40 | 122 | return scm_wta_dispatch_1 (g_vector_length, v, 1, "vector-length"); |
0f2d19dd JB |
123 | } |
124 | ||
88797580 MV |
125 | size_t |
126 | scm_c_vector_length (SCM v) | |
127 | { | |
6e708ef2 MV |
128 | if (SCM_I_IS_VECTOR (v)) |
129 | return SCM_I_VECTOR_LENGTH (v); | |
88797580 | 130 | else |
de5c0f58 | 131 | return scm_to_size_t (scm_vector_length (v)); |
88797580 MV |
132 | } |
133 | ||
f172c0b7 | 134 | SCM_REGISTER_PROC (s_list_to_vector, "list->vector", 1, 0, 0, scm_vector); |
5ffe9968 | 135 | /* |
942e5b91 MG |
136 | "Return a newly created vector initialized to the elements of" |
137 | "the list @var{list}.\n\n" | |
138 | "@lisp\n" | |
139 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
140 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
141 | "@end lisp") | |
5ffe9968 | 142 | */ |
a1ec6916 | 143 | SCM_DEFINE (scm_vector, "vector", 0, 0, 1, |
f172c0b7 | 144 | (SCM l), |
8f85c0c6 NJ |
145 | "@deffnx {Scheme Procedure} list->vector l\n" |
146 | "Return a newly allocated vector composed of the\n" | |
1e6808ea MG |
147 | "given arguments. Analogous to @code{list}.\n" |
148 | "\n" | |
942e5b91 | 149 | "@lisp\n" |
1e6808ea | 150 | "(vector 'a 'b 'c) @result{} #(a b c)\n" |
942e5b91 | 151 | "@end lisp") |
1bbd0b84 | 152 | #define FUNC_NAME s_scm_vector |
0f2d19dd JB |
153 | { |
154 | SCM res; | |
22a52da1 | 155 | SCM *data; |
1d0df896 | 156 | long i, len; |
6e708ef2 | 157 | scm_t_array_handle handle; |
22a52da1 | 158 | |
1d0df896 | 159 | SCM_VALIDATE_LIST_COPYLEN (1, l, len); |
34d19ef6 | 160 | |
6e708ef2 MV |
161 | res = scm_c_make_vector (len, SCM_UNSPECIFIED); |
162 | data = scm_vector_writable_elements (res, &handle, NULL, NULL); | |
1d0df896 | 163 | i = 0; |
c8857a4d | 164 | while (scm_is_pair (l) && i < len) |
22a52da1 | 165 | { |
1d0df896 | 166 | data[i] = SCM_CAR (l); |
22a52da1 | 167 | l = SCM_CDR (l); |
6e708ef2 | 168 | i += 1; |
22a52da1 DH |
169 | } |
170 | ||
c8857a4d MV |
171 | scm_array_handle_release (&handle); |
172 | ||
0f2d19dd JB |
173 | return res; |
174 | } | |
1bbd0b84 | 175 | #undef FUNC_NAME |
0f2d19dd | 176 | |
f172c0b7 | 177 | SCM_GPROC (s_vector_ref, "vector-ref", 2, 0, 0, scm_vector_ref, g_vector_ref); |
1cc91f1b | 178 | |
5ffe9968 GB |
179 | /* |
180 | "@var{k} must be a valid index of @var{vector}.\n" | |
181 | "@samp{Vector-ref} returns the contents of element @var{k} of\n" | |
182 | "@var{vector}.\n\n" | |
942e5b91 MG |
183 | "@lisp\n" |
184 | "(vector-ref '#(1 1 2 3 5 8 13 21) 5) @result{} 8\n" | |
5ffe9968 GB |
185 | "(vector-ref '#(1 1 2 3 5 8 13 21)\n" |
186 | " (let ((i (round (* 2 (acos -1)))))\n" | |
187 | " (if (inexact? i)\n" | |
188 | " (inexact->exact i)\n" | |
942e5b91 MG |
189 | " i))) @result{} 13\n" |
190 | "@end lisp" | |
5ffe9968 GB |
191 | */ |
192 | ||
0f2d19dd | 193 | SCM |
ea633082 | 194 | scm_vector_ref (SCM v, SCM k) |
685c0d71 | 195 | #define FUNC_NAME s_vector_ref |
0f2d19dd | 196 | { |
de5c0f58 | 197 | return scm_c_vector_ref (v, scm_to_size_t (k)); |
0f2d19dd | 198 | } |
685c0d71 | 199 | #undef FUNC_NAME |
0f2d19dd | 200 | |
88797580 MV |
201 | SCM |
202 | scm_c_vector_ref (SCM v, size_t k) | |
203 | { | |
a141db86 | 204 | if (SCM_I_IS_NONWEAK_VECTOR (v)) |
de5c0f58 | 205 | { |
6e708ef2 | 206 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
3a2de079 | 207 | scm_out_of_range (NULL, scm_from_size_t (k)); |
a141db86 | 208 | return SCM_SIMPLE_VECTOR_REF (v, k); |
de5c0f58 | 209 | } |
a141db86 AW |
210 | else if (SCM_I_WVECTP (v)) |
211 | return scm_c_weak_vector_ref (v, k); | |
04b87de5 | 212 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
88797580 | 213 | { |
04b87de5 MV |
214 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
215 | SCM vv = SCM_I_ARRAY_V (v); | |
a141db86 AW |
216 | |
217 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; | |
218 | if (k >= dim->ubnd - dim->lbnd + 1) | |
219 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
220 | ||
221 | if (SCM_I_IS_NONWEAK_VECTOR (vv)) | |
222 | return SCM_SIMPLE_VECTOR_REF (vv, k); | |
223 | else if (SCM_I_WVECTP (vv)) | |
224 | return scm_c_weak_vector_ref (vv, k); | |
225 | else | |
226 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 | 227 | } |
de5c0f58 | 228 | else |
fa075d40 AW |
229 | return scm_wta_dispatch_2 (g_vector_ref, v, scm_from_size_t (k), 2, |
230 | "vector-ref"); | |
88797580 MV |
231 | } |
232 | ||
f172c0b7 | 233 | SCM_GPROC (s_vector_set_x, "vector-set!", 3, 0, 0, scm_vector_set_x, g_vector_set_x); |
1cc91f1b | 234 | |
942e5b91 MG |
235 | /* "@var{k} must be a valid index of @var{vector}.\n" |
236 | "@code{Vector-set!} stores @var{obj} in element @var{k} of @var{vector}.\n" | |
237 | "The value returned by @samp{vector-set!} is unspecified.\n" | |
238 | "@lisp\n" | |
239 | "(let ((vec (vector 0 '(2 2 2 2) "Anna")))\n" | |
240 | " (vector-set! vec 1 '("Sue" "Sue"))\n" | |
241 | " vec) @result{} #(0 ("Sue" "Sue") "Anna")\n" | |
242 | "(vector-set! '#(0 1 2) 1 "doe") @result{} @emph{error} ; constant vector\n" | |
243 | "@end lisp" | |
5ffe9968 GB |
244 | */ |
245 | ||
0f2d19dd | 246 | SCM |
f172c0b7 | 247 | scm_vector_set_x (SCM v, SCM k, SCM obj) |
685c0d71 | 248 | #define FUNC_NAME s_vector_set_x |
0f2d19dd | 249 | { |
de5c0f58 | 250 | scm_c_vector_set_x (v, scm_to_size_t (k), obj); |
60c497a3 | 251 | return SCM_UNSPECIFIED; |
0f2d19dd | 252 | } |
685c0d71 | 253 | #undef FUNC_NAME |
0f2d19dd | 254 | |
de5c0f58 | 255 | void |
88797580 MV |
256 | scm_c_vector_set_x (SCM v, size_t k, SCM obj) |
257 | { | |
a141db86 | 258 | if (SCM_I_IS_NONWEAK_VECTOR (v)) |
88797580 | 259 | { |
6e708ef2 | 260 | if (k >= SCM_I_VECTOR_LENGTH (v)) |
a141db86 AW |
261 | scm_out_of_range (NULL, scm_from_size_t (k)); |
262 | SCM_SIMPLE_VECTOR_SET (v, k, obj); | |
de5c0f58 | 263 | } |
a141db86 AW |
264 | else if (SCM_I_WVECTP (v)) |
265 | scm_c_weak_vector_set_x (v, k, obj); | |
04b87de5 | 266 | else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1) |
de5c0f58 | 267 | { |
04b87de5 MV |
268 | scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v); |
269 | SCM vv = SCM_I_ARRAY_V (v); | |
a141db86 AW |
270 | |
271 | k = SCM_I_ARRAY_BASE (v) + k*dim->inc; | |
272 | if (k >= dim->ubnd - dim->lbnd + 1) | |
273 | scm_out_of_range (NULL, scm_from_size_t (k)); | |
274 | ||
275 | if (SCM_I_IS_NONWEAK_VECTOR (vv)) | |
276 | SCM_SIMPLE_VECTOR_SET (vv, k, obj); | |
277 | else if (SCM_I_WVECTP (vv)) | |
278 | scm_c_weak_vector_set_x (vv, k, obj); | |
6e708ef2 MV |
279 | else |
280 | scm_wrong_type_arg_msg (NULL, 0, v, "non-uniform vector"); | |
88797580 MV |
281 | } |
282 | else | |
283 | { | |
de5c0f58 | 284 | if (SCM_UNPACK (g_vector_set_x)) |
fa075d40 AW |
285 | scm_wta_dispatch_n (g_vector_set_x, |
286 | scm_list_3 (v, scm_from_size_t (k), obj), | |
287 | 0, | |
288 | "vector-set!"); | |
de5c0f58 MV |
289 | else |
290 | scm_wrong_type_arg_msg (NULL, 0, v, "vector"); | |
88797580 MV |
291 | } |
292 | } | |
0f2d19dd | 293 | |
a1ec6916 | 294 | SCM_DEFINE (scm_make_vector, "make-vector", 1, 1, 0, |
1bbd0b84 | 295 | (SCM k, SCM fill), |
1e6808ea | 296 | "Return a newly allocated vector of @var{k} elements. If a\n" |
8f85c0c6 NJ |
297 | "second argument is given, then each position is initialized to\n" |
298 | "@var{fill}. Otherwise the initial contents of each position is\n" | |
1e6808ea | 299 | "unspecified.") |
1bbd0b84 | 300 | #define FUNC_NAME s_scm_make_vector |
0f2d19dd | 301 | { |
6e708ef2 | 302 | size_t l = scm_to_unsigned_integer (k, 0, VECTOR_MAX_LENGTH); |
e11e83f3 | 303 | |
1b9be268 | 304 | if (SCM_UNBNDP (fill)) |
d60cebe2 | 305 | fill = SCM_UNSPECIFIED; |
e11e83f3 MV |
306 | |
307 | return scm_c_make_vector (l, fill); | |
00ffa0e7 KN |
308 | } |
309 | #undef FUNC_NAME | |
310 | ||
e382fdbe | 311 | |
00ffa0e7 | 312 | SCM |
88797580 | 313 | scm_c_make_vector (size_t k, SCM fill) |
00ffa0e7 KN |
314 | #define FUNC_NAME s_scm_make_vector |
315 | { | |
a141db86 AW |
316 | SCM vector; |
317 | unsigned long int j; | |
ed7e0765 | 318 | |
a141db86 | 319 | SCM_ASSERT_RANGE (1, scm_from_size_t (k), k <= VECTOR_MAX_LENGTH); |
1b9be268 | 320 | |
a141db86 | 321 | vector = scm_words ((k << 8) | scm_tc7_vector, k + 1); |
1b9be268 | 322 | |
a141db86 AW |
323 | for (j = 0; j < k; ++j) |
324 | SCM_SIMPLE_VECTOR_SET (vector, j, fill); | |
1b9be268 | 325 | |
a141db86 | 326 | return vector; |
0f2d19dd | 327 | } |
1bbd0b84 | 328 | #undef FUNC_NAME |
0f2d19dd | 329 | |
6e708ef2 MV |
330 | SCM_DEFINE (scm_vector_copy, "vector-copy", 1, 0, 0, |
331 | (SCM vec), | |
332 | "Return a copy of @var{vec}.") | |
333 | #define FUNC_NAME s_scm_vector_copy | |
334 | { | |
335 | scm_t_array_handle handle; | |
336 | size_t i, len; | |
337 | ssize_t inc; | |
338 | const SCM *src; | |
ed7e0765 | 339 | SCM result, *dst; |
6e708ef2 MV |
340 | |
341 | src = scm_vector_elements (vec, &handle, &len, &inc); | |
ed7e0765 LC |
342 | |
343 | result = scm_c_make_vector (len, SCM_UNDEFINED); | |
344 | dst = SCM_I_VECTOR_WELTS (result); | |
6e708ef2 MV |
345 | for (i = 0; i < len; i++, src += inc) |
346 | dst[i] = *src; | |
ed7e0765 | 347 | |
c8857a4d | 348 | scm_array_handle_release (&handle); |
6e708ef2 | 349 | |
ed7e0765 | 350 | return result; |
6e708ef2 MV |
351 | } |
352 | #undef FUNC_NAME | |
353 | ||
d525e4f9 | 354 | \f |
3b3b36dd | 355 | SCM_DEFINE (scm_vector_to_list, "vector->list", 1, 0, 0, |
1e6808ea | 356 | (SCM v), |
8f85c0c6 | 357 | "Return a newly allocated list composed of the elements of @var{v}.\n" |
1e6808ea | 358 | "\n" |
942e5b91 MG |
359 | "@lisp\n" |
360 | "(vector->list '#(dah dah didah)) @result{} (dah dah didah)\n" | |
361 | "(list->vector '(dididit dah)) @result{} #(dididit dah)\n" | |
362 | "@end lisp") | |
1bbd0b84 | 363 | #define FUNC_NAME s_scm_vector_to_list |
0f2d19dd | 364 | { |
6e708ef2 MV |
365 | SCM res = SCM_EOL; |
366 | const SCM *data; | |
367 | scm_t_array_handle handle; | |
22be72d3 | 368 | size_t i, count, len; |
6e708ef2 MV |
369 | ssize_t inc; |
370 | ||
371 | data = scm_vector_elements (v, &handle, &len, &inc); | |
22be72d3 LC |
372 | for (i = (len - 1) * inc, count = 0; |
373 | count < len; | |
374 | i -= inc, count++) | |
375 | res = scm_cons (data[i], res); | |
376 | ||
c8857a4d | 377 | scm_array_handle_release (&handle); |
6e708ef2 | 378 | return res; |
0f2d19dd | 379 | } |
1bbd0b84 | 380 | #undef FUNC_NAME |
0f2d19dd JB |
381 | |
382 | ||
a1ec6916 | 383 | SCM_DEFINE (scm_vector_fill_x, "vector-fill!", 2, 0, 0, |
1e6808ea | 384 | (SCM v, SCM fill), |
8f85c0c6 | 385 | "Store @var{fill} in every position of @var{vector}. The value\n" |
1e6808ea | 386 | "returned by @code{vector-fill!} is unspecified.") |
1bbd0b84 | 387 | #define FUNC_NAME s_scm_vector_fill_x |
0f2d19dd | 388 | { |
6e708ef2 MV |
389 | scm_t_array_handle handle; |
390 | SCM *data; | |
391 | size_t i, len; | |
392 | ssize_t inc; | |
393 | ||
394 | data = scm_vector_writable_elements (v, &handle, &len, &inc); | |
395 | for (i = 0; i < len; i += inc) | |
396 | data[i] = fill; | |
c8857a4d | 397 | scm_array_handle_release (&handle); |
6e708ef2 | 398 | return SCM_UNSPECIFIED; |
0f2d19dd | 399 | } |
1bbd0b84 | 400 | #undef FUNC_NAME |
0f2d19dd JB |
401 | |
402 | ||
0f2d19dd | 403 | SCM |
354116f7 | 404 | scm_i_vector_equal_p (SCM x, SCM y) |
0f2d19dd | 405 | { |
c014a02e | 406 | long i; |
6e708ef2 MV |
407 | for (i = SCM_I_VECTOR_LENGTH (x) - 1; i >= 0; i--) |
408 | if (scm_is_false (scm_equal_p (SCM_I_VECTOR_ELTS (x)[i], | |
409 | SCM_I_VECTOR_ELTS (y)[i]))) | |
0f2d19dd JB |
410 | return SCM_BOOL_F; |
411 | return SCM_BOOL_T; | |
412 | } | |
413 | ||
414 | ||
a1ec6916 | 415 | SCM_DEFINE (scm_vector_move_left_x, "vector-move-left!", 5, 0, 0, |
1bbd0b84 | 416 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
417 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
418 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
419 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
420 | "@code{vector-move-left!} copies elements in leftmost order.\n" | |
421 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
422 | "same vector, @code{vector-move-left!} is usually appropriate when\n" | |
423 | "@var{start1} is greater than @var{start2}.") | |
1bbd0b84 | 424 | #define FUNC_NAME s_scm_vector_move_left_x |
0f2d19dd | 425 | { |
6e708ef2 MV |
426 | scm_t_array_handle handle1, handle2; |
427 | const SCM *elts1; | |
428 | SCM *elts2; | |
de5c0f58 | 429 | size_t len1, len2; |
6e708ef2 | 430 | ssize_t inc1, inc2; |
a55c2b68 | 431 | size_t i, j, e; |
6e708ef2 MV |
432 | |
433 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
434 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
34d19ef6 | 435 | |
de5c0f58 MV |
436 | i = scm_to_unsigned_integer (start1, 0, len1); |
437 | e = scm_to_unsigned_integer (end1, i, len1); | |
ca659673 | 438 | SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) <= len2); |
551b96d2 AW |
439 | j = scm_to_unsigned_integer (start2, 0, len2); |
440 | SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); | |
de5c0f58 | 441 | |
6e708ef2 MV |
442 | i *= inc1; |
443 | e *= inc1; | |
444 | j *= inc2; | |
445 | for (; i < e; i += inc1, j += inc2) | |
446 | elts2[j] = elts1[i]; | |
447 | ||
c8857a4d MV |
448 | scm_array_handle_release (&handle2); |
449 | scm_array_handle_release (&handle1); | |
450 | ||
0f2d19dd JB |
451 | return SCM_UNSPECIFIED; |
452 | } | |
1bbd0b84 | 453 | #undef FUNC_NAME |
0f2d19dd | 454 | |
a1ec6916 | 455 | SCM_DEFINE (scm_vector_move_right_x, "vector-move-right!", 5, 0, 0, |
1bbd0b84 | 456 | (SCM vec1, SCM start1, SCM end1, SCM vec2, SCM start2), |
694a9bb3 NJ |
457 | "Copy elements from @var{vec1}, positions @var{start1} to @var{end1},\n" |
458 | "to @var{vec2} starting at position @var{start2}. @var{start1} and\n" | |
459 | "@var{start2} are inclusive indices; @var{end1} is exclusive.\n\n" | |
460 | "@code{vector-move-right!} copies elements in rightmost order.\n" | |
461 | "Therefore, in the case where @var{vec1} and @var{vec2} refer to the\n" | |
462 | "same vector, @code{vector-move-right!} is usually appropriate when\n" | |
463 | "@var{start1} is less than @var{start2}.") | |
1bbd0b84 | 464 | #define FUNC_NAME s_scm_vector_move_right_x |
0f2d19dd | 465 | { |
6e708ef2 MV |
466 | scm_t_array_handle handle1, handle2; |
467 | const SCM *elts1; | |
468 | SCM *elts2; | |
de5c0f58 | 469 | size_t len1, len2; |
6e708ef2 | 470 | ssize_t inc1, inc2; |
a55c2b68 | 471 | size_t i, j, e; |
6e708ef2 MV |
472 | |
473 | elts1 = scm_vector_elements (vec1, &handle1, &len1, &inc1); | |
474 | elts2 = scm_vector_writable_elements (vec2, &handle2, &len2, &inc2); | |
0f2d19dd | 475 | |
de5c0f58 MV |
476 | i = scm_to_unsigned_integer (start1, 0, len1); |
477 | e = scm_to_unsigned_integer (end1, i, len1); | |
ca659673 | 478 | SCM_ASSERT_RANGE (SCM_ARG3, end1, (e-i) <= len2); |
551b96d2 AW |
479 | j = scm_to_unsigned_integer (start2, 0, len2); |
480 | SCM_ASSERT_RANGE (SCM_ARG5, start2, j <= len2 - (e - i)); | |
481 | ||
482 | j += (e - i); | |
de5c0f58 | 483 | |
6e708ef2 MV |
484 | i *= inc1; |
485 | e *= inc1; | |
486 | j *= inc2; | |
487 | while (i < e) | |
de5c0f58 | 488 | { |
6e708ef2 MV |
489 | e -= inc1; |
490 | j -= inc2; | |
491 | elts2[j] = elts1[e]; | |
de5c0f58 | 492 | } |
6e708ef2 | 493 | |
c8857a4d MV |
494 | scm_array_handle_release (&handle2); |
495 | scm_array_handle_release (&handle1); | |
496 | ||
0f2d19dd JB |
497 | return SCM_UNSPECIFIED; |
498 | } | |
1bbd0b84 | 499 | #undef FUNC_NAME |
0f2d19dd | 500 | |
438974d0 | 501 | \f |
2a610be5 AW |
502 | static SCM |
503 | vector_handle_ref (scm_t_array_handle *h, size_t idx) | |
88797580 | 504 | { |
2a610be5 AW |
505 | if (idx > h->dims[0].ubnd) |
506 | scm_out_of_range ("vector-handle-ref", scm_from_size_t (idx)); | |
507 | return ((SCM*)h->elements)[idx]; | |
88797580 MV |
508 | } |
509 | ||
2a610be5 AW |
510 | static void |
511 | vector_handle_set (scm_t_array_handle *h, size_t idx, SCM val) | |
88797580 | 512 | { |
2a610be5 AW |
513 | if (idx > h->dims[0].ubnd) |
514 | scm_out_of_range ("vector-handle-set!", scm_from_size_t (idx)); | |
515 | ((SCM*)h->writable_elements)[idx] = val; | |
88797580 | 516 | } |
88797580 | 517 | |
2a610be5 AW |
518 | static void |
519 | vector_get_handle (SCM v, scm_t_array_handle *h) | |
88797580 | 520 | { |
2a610be5 AW |
521 | h->array = v; |
522 | h->ndims = 1; | |
523 | h->dims = &h->dim0; | |
524 | h->dim0.lbnd = 0; | |
525 | h->dim0.ubnd = SCM_I_VECTOR_LENGTH (v) - 1; | |
526 | h->dim0.inc = 1; | |
527 | h->element_type = SCM_ARRAY_ELEMENT_TYPE_SCM; | |
528 | h->elements = h->writable_elements = SCM_I_VECTOR_WELTS (v); | |
88797580 MV |
529 | } |
530 | ||
c5f17102 AW |
531 | /* the & ~2 allows catching scm_tc7_wvect as well. needs changing if you change |
532 | tags.h. */ | |
2a610be5 AW |
533 | SCM_ARRAY_IMPLEMENTATION (scm_tc7_vector, 0x7f & ~2, |
534 | vector_handle_ref, vector_handle_set, | |
f65e0168 | 535 | vector_get_handle) |
f65e0168 | 536 | SCM_VECTOR_IMPLEMENTATION (SCM_ARRAY_ELEMENT_TYPE_SCM, scm_make_vector) |
88797580 | 537 | |
1cc91f1b | 538 | |
0f2d19dd JB |
539 | void |
540 | scm_init_vectors () | |
0f2d19dd | 541 | { |
a0599745 | 542 | #include "libguile/vectors.x" |
0f2d19dd JB |
543 | } |
544 | ||
89e00824 ML |
545 | |
546 | /* | |
547 | Local Variables: | |
548 | c-file-style: "gnu" | |
549 | End: | |
550 | */ |