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438974d0 | 1 | /* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004, 2005, 2006, 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 JB |
20 | \f |
21 | ||
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
2a5cd898 RB |
23 | # include <config.h> |
24 | #endif | |
25 | ||
0f2d19dd | 26 | #include <stdio.h> |
e6e2e95a | 27 | #include <errno.h> |
783e7774 | 28 | #include <string.h> |
e6e2e95a | 29 | |
a0599745 | 30 | #include "libguile/_scm.h" |
e0e49670 MV |
31 | #include "libguile/__scm.h" |
32 | #include "libguile/eq.h" | |
a0599745 MD |
33 | #include "libguile/chars.h" |
34 | #include "libguile/eval.h" | |
35 | #include "libguile/fports.h" | |
36 | #include "libguile/smob.h" | |
a0599745 MD |
37 | #include "libguile/feature.h" |
38 | #include "libguile/root.h" | |
39 | #include "libguile/strings.h" | |
c44ca4fe | 40 | #include "libguile/srfi-13.h" |
e0e49670 | 41 | #include "libguile/srfi-4.h" |
a0599745 | 42 | #include "libguile/vectors.h" |
cf396142 | 43 | #include "libguile/bitvectors.h" |
438974d0 | 44 | #include "libguile/bytevectors.h" |
bfad4005 | 45 | #include "libguile/list.h" |
d44ff083 | 46 | #include "libguile/dynwind.h" |
943a0a87 | 47 | #include "libguile/read.h" |
a0599745 MD |
48 | |
49 | #include "libguile/validate.h" | |
2fa901a5 | 50 | #include "libguile/arrays.h" |
943a0a87 | 51 | #include "libguile/array-map.h" |
f332e957 | 52 | #include "libguile/generalized-vectors.h" |
943a0a87 | 53 | #include "libguile/generalized-arrays.h" |
476b894c | 54 | #include "libguile/uniform.h" |
0f2d19dd | 55 | |
0f2d19dd | 56 | |
04b87de5 | 57 | scm_t_bits scm_i_tc16_array; |
04b87de5 MV |
58 | #define SCM_SET_ARRAY_CONTIGUOUS_FLAG(x) \ |
59 | (SCM_SET_CELL_WORD_0 ((x), SCM_CELL_WORD_0 (x) | SCM_I_ARRAY_FLAG_CONTIGUOUS)) | |
60 | #define SCM_CLR_ARRAY_CONTIGUOUS_FLAG(x) \ | |
61 | (SCM_SET_CELL_WORD_0 ((x), SCM_CELL_WORD_0 (x) & ~SCM_I_ARRAY_FLAG_CONTIGUOUS)) | |
1cc91f1b | 62 | |
0f2d19dd | 63 | |
e2d37336 MD |
64 | SCM_DEFINE (scm_shared_array_root, "shared-array-root", 1, 0, 0, |
65 | (SCM ra), | |
66 | "Return the root vector of a shared array.") | |
67 | #define FUNC_NAME s_scm_shared_array_root | |
68 | { | |
66b9d7d3 | 69 | if (SCM_I_ARRAYP (ra)) |
04b87de5 | 70 | return SCM_I_ARRAY_V (ra); |
52372719 MV |
71 | else if (scm_is_generalized_vector (ra)) |
72 | return ra; | |
943a0a87 | 73 | scm_wrong_type_arg_msg (FUNC_NAME, SCM_ARG1, ra, "array"); |
e2d37336 MD |
74 | } |
75 | #undef FUNC_NAME | |
76 | ||
77 | ||
78 | SCM_DEFINE (scm_shared_array_offset, "shared-array-offset", 1, 0, 0, | |
79 | (SCM ra), | |
80 | "Return the root vector index of the first element in the array.") | |
81 | #define FUNC_NAME s_scm_shared_array_offset | |
82 | { | |
52372719 MV |
83 | scm_t_array_handle handle; |
84 | SCM res; | |
85 | ||
86 | scm_array_get_handle (ra, &handle); | |
87 | res = scm_from_size_t (handle.base); | |
88 | scm_array_handle_release (&handle); | |
89 | return res; | |
e2d37336 MD |
90 | } |
91 | #undef FUNC_NAME | |
92 | ||
93 | ||
94 | SCM_DEFINE (scm_shared_array_increments, "shared-array-increments", 1, 0, 0, | |
95 | (SCM ra), | |
96 | "For each dimension, return the distance between elements in the root vector.") | |
97 | #define FUNC_NAME s_scm_shared_array_increments | |
98 | { | |
52372719 | 99 | scm_t_array_handle handle; |
e2d37336 | 100 | SCM res = SCM_EOL; |
1be6b49c | 101 | size_t k; |
92c2555f | 102 | scm_t_array_dim *s; |
02339e5b | 103 | |
52372719 MV |
104 | scm_array_get_handle (ra, &handle); |
105 | k = scm_array_handle_rank (&handle); | |
106 | s = scm_array_handle_dims (&handle); | |
e2d37336 | 107 | while (k--) |
52372719 MV |
108 | res = scm_cons (scm_from_ssize_t (s[k].inc), res); |
109 | scm_array_handle_release (&handle); | |
e2d37336 MD |
110 | return res; |
111 | } | |
112 | #undef FUNC_NAME | |
113 | ||
0cd6cb2f | 114 | SCM |
66b9d7d3 | 115 | scm_i_make_array (int ndim) |
0f2d19dd JB |
116 | { |
117 | SCM ra; | |
66b9d7d3 | 118 | SCM_NEWSMOB(ra, ((scm_t_bits) ndim << 17) + scm_i_tc16_array, |
04b87de5 | 119 | scm_gc_malloc ((sizeof (scm_i_t_array) + |
4c9419ac MV |
120 | ndim * sizeof (scm_t_array_dim)), |
121 | "array")); | |
04b87de5 | 122 | SCM_I_ARRAY_V (ra) = SCM_BOOL_F; |
0f2d19dd JB |
123 | return ra; |
124 | } | |
125 | ||
126 | static char s_bad_spec[] = "Bad scm_array dimension"; | |
0f2d19dd | 127 | |
1cc91f1b | 128 | |
02339e5b MV |
129 | /* Increments will still need to be set. */ |
130 | ||
0cd6cb2f MV |
131 | static SCM |
132 | scm_i_shap2ra (SCM args) | |
0f2d19dd | 133 | { |
92c2555f | 134 | scm_t_array_dim *s; |
0f2d19dd JB |
135 | SCM ra, spec, sp; |
136 | int ndim = scm_ilength (args); | |
b3fcac34 | 137 | if (ndim < 0) |
0cd6cb2f | 138 | scm_misc_error (NULL, s_bad_spec, SCM_EOL); |
b3fcac34 | 139 | |
66b9d7d3 | 140 | ra = scm_i_make_array (ndim); |
04b87de5 MV |
141 | SCM_I_ARRAY_BASE (ra) = 0; |
142 | s = SCM_I_ARRAY_DIMS (ra); | |
d2e53ed6 | 143 | for (; !scm_is_null (args); s++, args = SCM_CDR (args)) |
0f2d19dd JB |
144 | { |
145 | spec = SCM_CAR (args); | |
e11e83f3 | 146 | if (scm_is_integer (spec)) |
0f2d19dd | 147 | { |
e11e83f3 | 148 | if (scm_to_long (spec) < 0) |
0cd6cb2f | 149 | scm_misc_error (NULL, s_bad_spec, SCM_EOL); |
0f2d19dd | 150 | s->lbnd = 0; |
e11e83f3 | 151 | s->ubnd = scm_to_long (spec) - 1; |
0f2d19dd JB |
152 | s->inc = 1; |
153 | } | |
154 | else | |
155 | { | |
d2e53ed6 | 156 | if (!scm_is_pair (spec) || !scm_is_integer (SCM_CAR (spec))) |
0cd6cb2f | 157 | scm_misc_error (NULL, s_bad_spec, SCM_EOL); |
e11e83f3 | 158 | s->lbnd = scm_to_long (SCM_CAR (spec)); |
0f2d19dd | 159 | sp = SCM_CDR (spec); |
d2e53ed6 | 160 | if (!scm_is_pair (sp) |
e11e83f3 | 161 | || !scm_is_integer (SCM_CAR (sp)) |
d2e53ed6 | 162 | || !scm_is_null (SCM_CDR (sp))) |
0cd6cb2f | 163 | scm_misc_error (NULL, s_bad_spec, SCM_EOL); |
e11e83f3 | 164 | s->ubnd = scm_to_long (SCM_CAR (sp)); |
0f2d19dd JB |
165 | s->inc = 1; |
166 | } | |
167 | } | |
168 | return ra; | |
169 | } | |
170 | ||
f301dbf3 MV |
171 | SCM_DEFINE (scm_make_typed_array, "make-typed-array", 2, 0, 1, |
172 | (SCM type, SCM fill, SCM bounds), | |
173 | "Create and return an array of type @var{type}.") | |
174 | #define FUNC_NAME s_scm_make_typed_array | |
0f2d19dd | 175 | { |
f301dbf3 | 176 | size_t k, rlen = 1; |
92c2555f | 177 | scm_t_array_dim *s; |
0f2d19dd | 178 | SCM ra; |
1be6b49c | 179 | |
0cd6cb2f | 180 | ra = scm_i_shap2ra (bounds); |
e038c042 | 181 | SCM_SET_ARRAY_CONTIGUOUS_FLAG (ra); |
04b87de5 MV |
182 | s = SCM_I_ARRAY_DIMS (ra); |
183 | k = SCM_I_ARRAY_NDIM (ra); | |
1be6b49c | 184 | |
0f2d19dd JB |
185 | while (k--) |
186 | { | |
a3a32939 | 187 | s[k].inc = rlen; |
2caaadd1 | 188 | SCM_ASSERT_RANGE (1, bounds, s[k].lbnd <= s[k].ubnd + 1); |
0f2d19dd | 189 | rlen = (s[k].ubnd - s[k].lbnd + 1) * s[k].inc; |
0f2d19dd | 190 | } |
a3a32939 | 191 | |
f0b91039 | 192 | if (scm_is_eq (fill, SCM_UNSPECIFIED)) |
f301dbf3 | 193 | fill = SCM_UNDEFINED; |
a3a32939 | 194 | |
943a0a87 AW |
195 | SCM_I_ARRAY_V (ra) = |
196 | scm_make_generalized_vector (type, scm_from_size_t (rlen), fill); | |
a3a32939 | 197 | |
04b87de5 | 198 | if (1 == SCM_I_ARRAY_NDIM (ra) && 0 == SCM_I_ARRAY_BASE (ra)) |
c014a02e | 199 | if (s->ubnd < s->lbnd || (0 == s->lbnd && 1 == s->inc)) |
04b87de5 | 200 | return SCM_I_ARRAY_V (ra); |
0f2d19dd JB |
201 | return ra; |
202 | } | |
1bbd0b84 | 203 | #undef FUNC_NAME |
0f2d19dd | 204 | |
782a82ee AW |
205 | SCM |
206 | scm_from_contiguous_typed_array (SCM type, SCM bounds, const void *bytes, | |
207 | size_t byte_len) | |
208 | #define FUNC_NAME "scm_from_contiguous_typed_array" | |
209 | { | |
210 | size_t k, rlen = 1; | |
211 | scm_t_array_dim *s; | |
782a82ee AW |
212 | SCM ra; |
213 | scm_t_array_handle h; | |
214 | void *base; | |
215 | size_t sz; | |
216 | ||
782a82ee AW |
217 | ra = scm_i_shap2ra (bounds); |
218 | SCM_SET_ARRAY_CONTIGUOUS_FLAG (ra); | |
219 | s = SCM_I_ARRAY_DIMS (ra); | |
220 | k = SCM_I_ARRAY_NDIM (ra); | |
221 | ||
222 | while (k--) | |
223 | { | |
224 | s[k].inc = rlen; | |
225 | SCM_ASSERT_RANGE (1, bounds, s[k].lbnd <= s[k].ubnd + 1); | |
226 | rlen = (s[k].ubnd - s[k].lbnd + 1) * s[k].inc; | |
227 | } | |
943a0a87 AW |
228 | SCM_I_ARRAY_V (ra) = |
229 | scm_make_generalized_vector (type, scm_from_size_t (rlen), SCM_UNDEFINED); | |
782a82ee AW |
230 | |
231 | ||
232 | scm_array_get_handle (ra, &h); | |
233 | base = scm_array_handle_uniform_writable_elements (&h); | |
234 | sz = scm_array_handle_uniform_element_size (&h); | |
235 | scm_array_handle_release (&h); | |
236 | ||
237 | if (byte_len % sz) | |
238 | SCM_MISC_ERROR ("byte length not a multiple of the unit size", SCM_EOL); | |
239 | if (byte_len / sz != rlen) | |
240 | SCM_MISC_ERROR ("byte length and dimensions do not match", SCM_EOL); | |
241 | ||
242 | memcpy (base, bytes, byte_len); | |
243 | ||
244 | if (1 == SCM_I_ARRAY_NDIM (ra) && 0 == SCM_I_ARRAY_BASE (ra)) | |
245 | if (s->ubnd < s->lbnd || (0 == s->lbnd && 1 == s->inc)) | |
246 | return SCM_I_ARRAY_V (ra); | |
247 | return ra; | |
248 | } | |
249 | #undef FUNC_NAME | |
250 | ||
f301dbf3 MV |
251 | SCM_DEFINE (scm_make_array, "make-array", 1, 0, 1, |
252 | (SCM fill, SCM bounds), | |
253 | "Create and return an array.") | |
254 | #define FUNC_NAME s_scm_make_array | |
255 | { | |
256 | return scm_make_typed_array (SCM_BOOL_T, fill, bounds); | |
257 | } | |
258 | #undef FUNC_NAME | |
259 | ||
0cd6cb2f MV |
260 | static void |
261 | scm_i_ra_set_contp (SCM ra) | |
0f2d19dd | 262 | { |
04b87de5 | 263 | size_t k = SCM_I_ARRAY_NDIM (ra); |
0f2d19dd | 264 | if (k) |
0f2d19dd | 265 | { |
04b87de5 | 266 | long inc = SCM_I_ARRAY_DIMS (ra)[k - 1].inc; |
fe0c6dae | 267 | while (k--) |
0f2d19dd | 268 | { |
04b87de5 | 269 | if (inc != SCM_I_ARRAY_DIMS (ra)[k].inc) |
fe0c6dae | 270 | { |
e038c042 | 271 | SCM_CLR_ARRAY_CONTIGUOUS_FLAG (ra); |
fe0c6dae JB |
272 | return; |
273 | } | |
04b87de5 MV |
274 | inc *= (SCM_I_ARRAY_DIMS (ra)[k].ubnd |
275 | - SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1); | |
0f2d19dd | 276 | } |
0f2d19dd | 277 | } |
e038c042 | 278 | SCM_SET_ARRAY_CONTIGUOUS_FLAG (ra); |
0f2d19dd JB |
279 | } |
280 | ||
281 | ||
3b3b36dd | 282 | SCM_DEFINE (scm_make_shared_array, "make-shared-array", 2, 0, 1, |
1bbd0b84 | 283 | (SCM oldra, SCM mapfunc, SCM dims), |
b380b885 MD |
284 | "@code{make-shared-array} can be used to create shared subarrays of other\n" |
285 | "arrays. The @var{mapper} is a function that translates coordinates in\n" | |
286 | "the new array into coordinates in the old array. A @var{mapper} must be\n" | |
287 | "linear, and its range must stay within the bounds of the old array, but\n" | |
288 | "it can be otherwise arbitrary. A simple example:\n" | |
1e6808ea | 289 | "@lisp\n" |
b380b885 MD |
290 | "(define fred (make-array #f 8 8))\n" |
291 | "(define freds-diagonal\n" | |
292 | " (make-shared-array fred (lambda (i) (list i i)) 8))\n" | |
293 | "(array-set! freds-diagonal 'foo 3)\n" | |
294 | "(array-ref fred 3 3) @result{} foo\n" | |
295 | "(define freds-center\n" | |
296 | " (make-shared-array fred (lambda (i j) (list (+ 3 i) (+ 3 j))) 2 2))\n" | |
297 | "(array-ref freds-center 0 0) @result{} foo\n" | |
1e6808ea | 298 | "@end lisp") |
1bbd0b84 | 299 | #define FUNC_NAME s_scm_make_shared_array |
0f2d19dd | 300 | { |
112ba0ac | 301 | scm_t_array_handle old_handle; |
0f2d19dd JB |
302 | SCM ra; |
303 | SCM inds, indptr; | |
304 | SCM imap; | |
112ba0ac MV |
305 | size_t k; |
306 | ssize_t i; | |
2b829bbb | 307 | long old_base, old_min, new_min, old_max, new_max; |
92c2555f | 308 | scm_t_array_dim *s; |
b3fcac34 DH |
309 | |
310 | SCM_VALIDATE_REST_ARGUMENT (dims); | |
34d19ef6 | 311 | SCM_VALIDATE_PROC (2, mapfunc); |
0cd6cb2f | 312 | ra = scm_i_shap2ra (dims); |
112ba0ac MV |
313 | |
314 | scm_array_get_handle (oldra, &old_handle); | |
315 | ||
04b87de5 | 316 | if (SCM_I_ARRAYP (oldra)) |
0f2d19dd | 317 | { |
04b87de5 | 318 | SCM_I_ARRAY_V (ra) = SCM_I_ARRAY_V (oldra); |
2b829bbb | 319 | old_base = old_min = old_max = SCM_I_ARRAY_BASE (oldra); |
112ba0ac MV |
320 | s = scm_array_handle_dims (&old_handle); |
321 | k = scm_array_handle_rank (&old_handle); | |
0f2d19dd JB |
322 | while (k--) |
323 | { | |
324 | if (s[k].inc > 0) | |
325 | old_max += (s[k].ubnd - s[k].lbnd) * s[k].inc; | |
326 | else | |
327 | old_min += (s[k].ubnd - s[k].lbnd) * s[k].inc; | |
328 | } | |
329 | } | |
330 | else | |
331 | { | |
04b87de5 | 332 | SCM_I_ARRAY_V (ra) = oldra; |
2b829bbb | 333 | old_base = old_min = 0; |
02339e5b | 334 | old_max = scm_c_generalized_vector_length (oldra) - 1; |
0f2d19dd | 335 | } |
112ba0ac | 336 | |
0f2d19dd | 337 | inds = SCM_EOL; |
04b87de5 MV |
338 | s = SCM_I_ARRAY_DIMS (ra); |
339 | for (k = 0; k < SCM_I_ARRAY_NDIM (ra); k++) | |
0f2d19dd | 340 | { |
e11e83f3 | 341 | inds = scm_cons (scm_from_long (s[k].lbnd), inds); |
0f2d19dd JB |
342 | if (s[k].ubnd < s[k].lbnd) |
343 | { | |
04b87de5 | 344 | if (1 == SCM_I_ARRAY_NDIM (ra)) |
943a0a87 AW |
345 | ra = scm_make_generalized_vector (scm_array_type (ra), |
346 | SCM_INUM0, SCM_UNDEFINED); | |
0f2d19dd | 347 | else |
943a0a87 AW |
348 | SCM_I_ARRAY_V (ra) = |
349 | scm_make_generalized_vector (scm_array_type (ra), | |
350 | SCM_INUM0, SCM_UNDEFINED); | |
112ba0ac | 351 | scm_array_handle_release (&old_handle); |
0f2d19dd JB |
352 | return ra; |
353 | } | |
354 | } | |
112ba0ac | 355 | |
fdc28395 | 356 | imap = scm_apply_0 (mapfunc, scm_reverse (inds)); |
0cd6cb2f | 357 | i = scm_array_handle_pos (&old_handle, imap); |
2b829bbb | 358 | SCM_I_ARRAY_BASE (ra) = new_min = new_max = i + old_base; |
0f2d19dd | 359 | indptr = inds; |
04b87de5 | 360 | k = SCM_I_ARRAY_NDIM (ra); |
0f2d19dd JB |
361 | while (k--) |
362 | { | |
363 | if (s[k].ubnd > s[k].lbnd) | |
364 | { | |
e11e83f3 | 365 | SCM_SETCAR (indptr, scm_sum (SCM_CAR (indptr), scm_from_int (1))); |
fdc28395 | 366 | imap = scm_apply_0 (mapfunc, scm_reverse (inds)); |
0cd6cb2f | 367 | s[k].inc = scm_array_handle_pos (&old_handle, imap) - i; |
0f2d19dd JB |
368 | i += s[k].inc; |
369 | if (s[k].inc > 0) | |
370 | new_max += (s[k].ubnd - s[k].lbnd) * s[k].inc; | |
371 | else | |
372 | new_min += (s[k].ubnd - s[k].lbnd) * s[k].inc; | |
373 | } | |
374 | else | |
375 | s[k].inc = new_max - new_min + 1; /* contiguous by default */ | |
376 | indptr = SCM_CDR (indptr); | |
377 | } | |
112ba0ac MV |
378 | |
379 | scm_array_handle_release (&old_handle); | |
380 | ||
b3fcac34 DH |
381 | if (old_min > new_min || old_max < new_max) |
382 | SCM_MISC_ERROR ("mapping out of range", SCM_EOL); | |
04b87de5 | 383 | if (1 == SCM_I_ARRAY_NDIM (ra) && 0 == SCM_I_ARRAY_BASE (ra)) |
0f2d19dd | 384 | { |
04b87de5 | 385 | SCM v = SCM_I_ARRAY_V (ra); |
6e708ef2 | 386 | size_t length = scm_c_generalized_vector_length (v); |
74014c46 DH |
387 | if (1 == s->inc && 0 == s->lbnd && length == 1 + s->ubnd) |
388 | return v; | |
0f2d19dd | 389 | if (s->ubnd < s->lbnd) |
943a0a87 AW |
390 | return scm_make_generalized_vector (scm_array_type (ra), SCM_INUM0, |
391 | SCM_UNDEFINED); | |
0f2d19dd | 392 | } |
0cd6cb2f | 393 | scm_i_ra_set_contp (ra); |
0f2d19dd JB |
394 | return ra; |
395 | } | |
1bbd0b84 | 396 | #undef FUNC_NAME |
0f2d19dd JB |
397 | |
398 | ||
399 | /* args are RA . DIMS */ | |
af45e3b0 DH |
400 | SCM_DEFINE (scm_transpose_array, "transpose-array", 1, 0, 1, |
401 | (SCM ra, SCM args), | |
1e6808ea MG |
402 | "Return an array sharing contents with @var{array}, but with\n" |
403 | "dimensions arranged in a different order. There must be one\n" | |
404 | "@var{dim} argument for each dimension of @var{array}.\n" | |
405 | "@var{dim0}, @var{dim1}, @dots{} should be integers between 0\n" | |
406 | "and the rank of the array to be returned. Each integer in that\n" | |
407 | "range must appear at least once in the argument list.\n" | |
408 | "\n" | |
409 | "The values of @var{dim0}, @var{dim1}, @dots{} correspond to\n" | |
410 | "dimensions in the array to be returned, their positions in the\n" | |
411 | "argument list to dimensions of @var{array}. Several @var{dim}s\n" | |
412 | "may have the same value, in which case the returned array will\n" | |
413 | "have smaller rank than @var{array}.\n" | |
414 | "\n" | |
415 | "@lisp\n" | |
b380b885 MD |
416 | "(transpose-array '#2((a b) (c d)) 1 0) @result{} #2((a c) (b d))\n" |
417 | "(transpose-array '#2((a b) (c d)) 0 0) @result{} #1(a d)\n" | |
418 | "(transpose-array '#3(((a b c) (d e f)) ((1 2 3) (4 5 6))) 1 1 0) @result{}\n" | |
419 | " #2((a 4) (b 5) (c 6))\n" | |
1e6808ea | 420 | "@end lisp") |
1bbd0b84 | 421 | #define FUNC_NAME s_scm_transpose_array |
0f2d19dd | 422 | { |
34d19ef6 | 423 | SCM res, vargs; |
92c2555f | 424 | scm_t_array_dim *s, *r; |
0f2d19dd | 425 | int ndim, i, k; |
af45e3b0 | 426 | |
b3fcac34 | 427 | SCM_VALIDATE_REST_ARGUMENT (args); |
1bbd0b84 | 428 | SCM_ASSERT (SCM_NIMP (ra), ra, SCM_ARG1, FUNC_NAME); |
e0e49670 | 429 | |
20930f28 | 430 | if (scm_is_generalized_vector (ra)) |
e0e49670 MV |
431 | { |
432 | /* Make sure that we are called with a single zero as | |
433 | arguments. | |
434 | */ | |
435 | if (scm_is_null (args) || !scm_is_null (SCM_CDR (args))) | |
436 | SCM_WRONG_NUM_ARGS (); | |
437 | SCM_VALIDATE_INT_COPY (SCM_ARG2, SCM_CAR (args), i); | |
438 | SCM_ASSERT_RANGE (SCM_ARG2, SCM_CAR (args), i == 0); | |
439 | return ra; | |
440 | } | |
441 | ||
66b9d7d3 | 442 | if (SCM_I_ARRAYP (ra)) |
0f2d19dd | 443 | { |
0f2d19dd | 444 | vargs = scm_vector (args); |
04b87de5 | 445 | if (SCM_SIMPLE_VECTOR_LENGTH (vargs) != SCM_I_ARRAY_NDIM (ra)) |
b3fcac34 | 446 | SCM_WRONG_NUM_ARGS (); |
0f2d19dd | 447 | ndim = 0; |
04b87de5 | 448 | for (k = 0; k < SCM_I_ARRAY_NDIM (ra); k++) |
0f2d19dd | 449 | { |
6e708ef2 | 450 | i = scm_to_signed_integer (SCM_SIMPLE_VECTOR_REF (vargs, k), |
04b87de5 | 451 | 0, SCM_I_ARRAY_NDIM(ra)); |
0f2d19dd JB |
452 | if (ndim < i) |
453 | ndim = i; | |
454 | } | |
455 | ndim++; | |
66b9d7d3 | 456 | res = scm_i_make_array (ndim); |
04b87de5 MV |
457 | SCM_I_ARRAY_V (res) = SCM_I_ARRAY_V (ra); |
458 | SCM_I_ARRAY_BASE (res) = SCM_I_ARRAY_BASE (ra); | |
0f2d19dd JB |
459 | for (k = ndim; k--;) |
460 | { | |
04b87de5 MV |
461 | SCM_I_ARRAY_DIMS (res)[k].lbnd = 0; |
462 | SCM_I_ARRAY_DIMS (res)[k].ubnd = -1; | |
0f2d19dd | 463 | } |
04b87de5 | 464 | for (k = SCM_I_ARRAY_NDIM (ra); k--;) |
0f2d19dd | 465 | { |
6e708ef2 | 466 | i = scm_to_int (SCM_SIMPLE_VECTOR_REF (vargs, k)); |
04b87de5 MV |
467 | s = &(SCM_I_ARRAY_DIMS (ra)[k]); |
468 | r = &(SCM_I_ARRAY_DIMS (res)[i]); | |
0f2d19dd JB |
469 | if (r->ubnd < r->lbnd) |
470 | { | |
471 | r->lbnd = s->lbnd; | |
472 | r->ubnd = s->ubnd; | |
473 | r->inc = s->inc; | |
474 | ndim--; | |
475 | } | |
476 | else | |
477 | { | |
478 | if (r->ubnd > s->ubnd) | |
479 | r->ubnd = s->ubnd; | |
480 | if (r->lbnd < s->lbnd) | |
481 | { | |
04b87de5 | 482 | SCM_I_ARRAY_BASE (res) += (s->lbnd - r->lbnd) * r->inc; |
0f2d19dd JB |
483 | r->lbnd = s->lbnd; |
484 | } | |
485 | r->inc += s->inc; | |
486 | } | |
487 | } | |
b3fcac34 DH |
488 | if (ndim > 0) |
489 | SCM_MISC_ERROR ("bad argument list", SCM_EOL); | |
0cd6cb2f | 490 | scm_i_ra_set_contp (res); |
0f2d19dd JB |
491 | return res; |
492 | } | |
20930f28 MV |
493 | |
494 | scm_wrong_type_arg_msg (NULL, 0, ra, "array"); | |
0f2d19dd | 495 | } |
1bbd0b84 | 496 | #undef FUNC_NAME |
0f2d19dd | 497 | |
1d7bdb25 GH |
498 | /* attempts to unroll an array into a one-dimensional array. |
499 | returns the unrolled array or #f if it can't be done. */ | |
1bbd0b84 | 500 | /* if strict is not SCM_UNDEFINED, return #f if returned array |
1d7bdb25 | 501 | wouldn't have contiguous elements. */ |
3b3b36dd | 502 | SCM_DEFINE (scm_array_contents, "array-contents", 1, 1, 0, |
1bbd0b84 | 503 | (SCM ra, SCM strict), |
b380b885 MD |
504 | "If @var{array} may be @dfn{unrolled} into a one dimensional shared array\n" |
505 | "without changing their order (last subscript changing fastest), then\n" | |
506 | "@code{array-contents} returns that shared array, otherwise it returns\n" | |
507 | "@code{#f}. All arrays made by @var{make-array} and\n" | |
508 | "@var{make-uniform-array} may be unrolled, some arrays made by\n" | |
509 | "@var{make-shared-array} may not be.\n\n" | |
510 | "If the optional argument @var{strict} is provided, a shared array will\n" | |
511 | "be returned only if its elements are stored internally contiguous in\n" | |
512 | "memory.") | |
1bbd0b84 | 513 | #define FUNC_NAME s_scm_array_contents |
0f2d19dd JB |
514 | { |
515 | SCM sra; | |
e0e49670 | 516 | |
20930f28 | 517 | if (scm_is_generalized_vector (ra)) |
e0e49670 MV |
518 | return ra; |
519 | ||
04b87de5 | 520 | if (SCM_I_ARRAYP (ra)) |
0f2d19dd | 521 | { |
04b87de5 MV |
522 | size_t k, ndim = SCM_I_ARRAY_NDIM (ra), len = 1; |
523 | if (!SCM_I_ARRAYP (ra) || !SCM_I_ARRAY_CONTP (ra)) | |
20930f28 MV |
524 | return SCM_BOOL_F; |
525 | for (k = 0; k < ndim; k++) | |
04b87de5 | 526 | len *= SCM_I_ARRAY_DIMS (ra)[k].ubnd - SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1; |
943a0a87 | 527 | if (!SCM_UNBNDP (strict) && scm_is_true (strict)) |
74014c46 | 528 | { |
04b87de5 | 529 | if (ndim && (1 != SCM_I_ARRAY_DIMS (ra)[ndim - 1].inc)) |
20930f28 | 530 | return SCM_BOOL_F; |
04b87de5 | 531 | if (scm_is_bitvector (SCM_I_ARRAY_V (ra))) |
20930f28 | 532 | { |
04b87de5 MV |
533 | if (len != scm_c_bitvector_length (SCM_I_ARRAY_V (ra)) || |
534 | SCM_I_ARRAY_BASE (ra) % SCM_LONG_BIT || | |
20930f28 MV |
535 | len % SCM_LONG_BIT) |
536 | return SCM_BOOL_F; | |
537 | } | |
74014c46 | 538 | } |
20930f28 MV |
539 | |
540 | { | |
04b87de5 | 541 | SCM v = SCM_I_ARRAY_V (ra); |
20930f28 | 542 | size_t length = scm_c_generalized_vector_length (v); |
04b87de5 | 543 | if ((len == length) && 0 == SCM_I_ARRAY_BASE (ra) && SCM_I_ARRAY_DIMS (ra)->inc) |
20930f28 | 544 | return v; |
0f2d19dd | 545 | } |
20930f28 | 546 | |
66b9d7d3 | 547 | sra = scm_i_make_array (1); |
04b87de5 MV |
548 | SCM_I_ARRAY_DIMS (sra)->lbnd = 0; |
549 | SCM_I_ARRAY_DIMS (sra)->ubnd = len - 1; | |
550 | SCM_I_ARRAY_V (sra) = SCM_I_ARRAY_V (ra); | |
551 | SCM_I_ARRAY_BASE (sra) = SCM_I_ARRAY_BASE (ra); | |
552 | SCM_I_ARRAY_DIMS (sra)->inc = (ndim ? SCM_I_ARRAY_DIMS (ra)[ndim - 1].inc : 1); | |
20930f28 | 553 | return sra; |
0f2d19dd | 554 | } |
02339e5b MV |
555 | else |
556 | scm_wrong_type_arg_msg (NULL, 0, ra, "array"); | |
0f2d19dd | 557 | } |
1bbd0b84 | 558 | #undef FUNC_NAME |
0f2d19dd | 559 | |
1cc91f1b | 560 | |
0f2d19dd | 561 | SCM |
6e8d25a6 | 562 | scm_ra2contig (SCM ra, int copy) |
0f2d19dd JB |
563 | { |
564 | SCM ret; | |
c014a02e ML |
565 | long inc = 1; |
566 | size_t k, len = 1; | |
04b87de5 MV |
567 | for (k = SCM_I_ARRAY_NDIM (ra); k--;) |
568 | len *= SCM_I_ARRAY_DIMS (ra)[k].ubnd - SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1; | |
569 | k = SCM_I_ARRAY_NDIM (ra); | |
570 | if (SCM_I_ARRAY_CONTP (ra) && ((0 == k) || (1 == SCM_I_ARRAY_DIMS (ra)[k - 1].inc))) | |
0f2d19dd | 571 | { |
04b87de5 | 572 | if (!scm_is_bitvector (SCM_I_ARRAY_V (ra))) |
0f2d19dd | 573 | return ra; |
04b87de5 MV |
574 | if ((len == scm_c_bitvector_length (SCM_I_ARRAY_V (ra)) && |
575 | 0 == SCM_I_ARRAY_BASE (ra) % SCM_LONG_BIT && | |
c014a02e | 576 | 0 == len % SCM_LONG_BIT)) |
0f2d19dd JB |
577 | return ra; |
578 | } | |
66b9d7d3 | 579 | ret = scm_i_make_array (k); |
04b87de5 | 580 | SCM_I_ARRAY_BASE (ret) = 0; |
0f2d19dd JB |
581 | while (k--) |
582 | { | |
04b87de5 MV |
583 | SCM_I_ARRAY_DIMS (ret)[k].lbnd = SCM_I_ARRAY_DIMS (ra)[k].lbnd; |
584 | SCM_I_ARRAY_DIMS (ret)[k].ubnd = SCM_I_ARRAY_DIMS (ra)[k].ubnd; | |
585 | SCM_I_ARRAY_DIMS (ret)[k].inc = inc; | |
586 | inc *= SCM_I_ARRAY_DIMS (ra)[k].ubnd - SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1; | |
0f2d19dd | 587 | } |
943a0a87 AW |
588 | SCM_I_ARRAY_V (ret) = scm_make_generalized_vector (scm_array_type (ra), |
589 | scm_from_long (inc), | |
590 | SCM_UNDEFINED); | |
0f2d19dd JB |
591 | if (copy) |
592 | scm_array_copy_x (ra, ret); | |
593 | return ret; | |
594 | } | |
595 | ||
596 | ||
597 | ||
3b3b36dd | 598 | SCM_DEFINE (scm_uniform_array_read_x, "uniform-array-read!", 1, 3, 0, |
03a5397a | 599 | (SCM ura, SCM port_or_fd, SCM start, SCM end), |
8f85c0c6 NJ |
600 | "@deffnx {Scheme Procedure} uniform-vector-read! uve [port-or-fdes] [start] [end]\n" |
601 | "Attempt to read all elements of @var{ura}, in lexicographic order, as\n" | |
b380b885 | 602 | "binary objects from @var{port-or-fdes}.\n" |
8f85c0c6 NJ |
603 | "If an end of file is encountered,\n" |
604 | "the objects up to that point are put into @var{ura}\n" | |
b380b885 MD |
605 | "(starting at the beginning) and the remainder of the array is\n" |
606 | "unchanged.\n\n" | |
607 | "The optional arguments @var{start} and @var{end} allow\n" | |
608 | "a specified region of a vector (or linearized array) to be read,\n" | |
609 | "leaving the remainder of the vector unchanged.\n\n" | |
610 | "@code{uniform-array-read!} returns the number of objects read.\n" | |
611 | "@var{port-or-fdes} may be omitted, in which case it defaults to the value\n" | |
612 | "returned by @code{(current-input-port)}.") | |
1bbd0b84 | 613 | #define FUNC_NAME s_scm_uniform_array_read_x |
0f2d19dd | 614 | { |
3d8d56df | 615 | if (SCM_UNBNDP (port_or_fd)) |
9de87eea | 616 | port_or_fd = scm_current_input_port (); |
35de7ebe | 617 | |
03a5397a | 618 | if (scm_is_uniform_vector (ura)) |
20930f28 | 619 | { |
03a5397a | 620 | return scm_uniform_vector_read_x (ura, port_or_fd, start, end); |
20930f28 | 621 | } |
04b87de5 | 622 | else if (SCM_I_ARRAYP (ura)) |
20930f28 | 623 | { |
03a5397a MV |
624 | size_t base, vlen, cstart, cend; |
625 | SCM cra, ans; | |
626 | ||
627 | cra = scm_ra2contig (ura, 0); | |
04b87de5 MV |
628 | base = SCM_I_ARRAY_BASE (cra); |
629 | vlen = SCM_I_ARRAY_DIMS (cra)->inc * | |
630 | (SCM_I_ARRAY_DIMS (cra)->ubnd - SCM_I_ARRAY_DIMS (cra)->lbnd + 1); | |
35de7ebe | 631 | |
03a5397a MV |
632 | cstart = 0; |
633 | cend = vlen; | |
634 | if (!SCM_UNBNDP (start)) | |
1146b6cd | 635 | { |
03a5397a MV |
636 | cstart = scm_to_unsigned_integer (start, 0, vlen); |
637 | if (!SCM_UNBNDP (end)) | |
638 | cend = scm_to_unsigned_integer (end, cstart, vlen); | |
1146b6cd | 639 | } |
35de7ebe | 640 | |
04b87de5 | 641 | ans = scm_uniform_vector_read_x (SCM_I_ARRAY_V (cra), port_or_fd, |
03a5397a MV |
642 | scm_from_size_t (base + cstart), |
643 | scm_from_size_t (base + cend)); | |
6c951427 | 644 | |
03a5397a MV |
645 | if (!scm_is_eq (cra, ura)) |
646 | scm_array_copy_x (cra, ura); | |
647 | return ans; | |
3d8d56df | 648 | } |
03a5397a MV |
649 | else |
650 | scm_wrong_type_arg_msg (NULL, 0, ura, "array"); | |
0f2d19dd | 651 | } |
1bbd0b84 | 652 | #undef FUNC_NAME |
0f2d19dd | 653 | |
3b3b36dd | 654 | SCM_DEFINE (scm_uniform_array_write, "uniform-array-write", 1, 3, 0, |
03a5397a | 655 | (SCM ura, SCM port_or_fd, SCM start, SCM end), |
b380b885 MD |
656 | "Writes all elements of @var{ura} as binary objects to\n" |
657 | "@var{port-or-fdes}.\n\n" | |
658 | "The optional arguments @var{start}\n" | |
659 | "and @var{end} allow\n" | |
660 | "a specified region of a vector (or linearized array) to be written.\n\n" | |
9401323e | 661 | "The number of objects actually written is returned.\n" |
b380b885 MD |
662 | "@var{port-or-fdes} may be\n" |
663 | "omitted, in which case it defaults to the value returned by\n" | |
664 | "@code{(current-output-port)}.") | |
1bbd0b84 | 665 | #define FUNC_NAME s_scm_uniform_array_write |
0f2d19dd | 666 | { |
3d8d56df | 667 | if (SCM_UNBNDP (port_or_fd)) |
9de87eea | 668 | port_or_fd = scm_current_output_port (); |
20930f28 | 669 | |
03a5397a | 670 | if (scm_is_uniform_vector (ura)) |
20930f28 | 671 | { |
03a5397a | 672 | return scm_uniform_vector_write (ura, port_or_fd, start, end); |
20930f28 | 673 | } |
04b87de5 | 674 | else if (SCM_I_ARRAYP (ura)) |
20930f28 | 675 | { |
03a5397a MV |
676 | size_t base, vlen, cstart, cend; |
677 | SCM cra, ans; | |
678 | ||
679 | cra = scm_ra2contig (ura, 1); | |
04b87de5 MV |
680 | base = SCM_I_ARRAY_BASE (cra); |
681 | vlen = SCM_I_ARRAY_DIMS (cra)->inc * | |
682 | (SCM_I_ARRAY_DIMS (cra)->ubnd - SCM_I_ARRAY_DIMS (cra)->lbnd + 1); | |
1146b6cd | 683 | |
03a5397a MV |
684 | cstart = 0; |
685 | cend = vlen; | |
686 | if (!SCM_UNBNDP (start)) | |
1146b6cd | 687 | { |
03a5397a MV |
688 | cstart = scm_to_unsigned_integer (start, 0, vlen); |
689 | if (!SCM_UNBNDP (end)) | |
690 | cend = scm_to_unsigned_integer (end, cstart, vlen); | |
1146b6cd | 691 | } |
3d8d56df | 692 | |
04b87de5 | 693 | ans = scm_uniform_vector_write (SCM_I_ARRAY_V (cra), port_or_fd, |
03a5397a MV |
694 | scm_from_size_t (base + cstart), |
695 | scm_from_size_t (base + cend)); | |
6c951427 | 696 | |
03a5397a | 697 | return ans; |
3d8d56df | 698 | } |
03a5397a MV |
699 | else |
700 | scm_wrong_type_arg_msg (NULL, 0, ura, "array"); | |
0f2d19dd | 701 | } |
1bbd0b84 | 702 | #undef FUNC_NAME |
0f2d19dd JB |
703 | |
704 | ||
943a0a87 AW |
705 | static void |
706 | list_to_array (SCM lst, scm_t_array_handle *handle, ssize_t pos, size_t k) | |
707 | { | |
708 | if (k == scm_array_handle_rank (handle)) | |
709 | scm_array_handle_set (handle, pos, lst); | |
710 | else | |
711 | { | |
712 | scm_t_array_dim *dim = scm_array_handle_dims (handle) + k; | |
713 | ssize_t inc = dim->inc; | |
714 | size_t len = 1 + dim->ubnd - dim->lbnd, n; | |
715 | char *errmsg = NULL; | |
716 | ||
717 | n = len; | |
718 | while (n > 0 && scm_is_pair (lst)) | |
719 | { | |
720 | list_to_array (SCM_CAR (lst), handle, pos, k + 1); | |
721 | pos += inc; | |
722 | lst = SCM_CDR (lst); | |
723 | n -= 1; | |
724 | } | |
725 | if (n != 0) | |
726 | errmsg = "too few elements for array dimension ~a, need ~a"; | |
727 | if (!scm_is_null (lst)) | |
728 | errmsg = "too many elements for array dimension ~a, want ~a"; | |
729 | if (errmsg) | |
730 | scm_misc_error (NULL, errmsg, scm_list_2 (scm_from_ulong (k), | |
731 | scm_from_size_t (len))); | |
732 | } | |
733 | } | |
734 | ||
1cc91f1b | 735 | |
f301dbf3 | 736 | SCM_DEFINE (scm_list_to_typed_array, "list->typed-array", 3, 0, 0, |
2caaadd1 | 737 | (SCM type, SCM shape, SCM lst), |
f301dbf3 MV |
738 | "Return an array of the type @var{type}\n" |
739 | "with elements the same as those of @var{lst}.\n" | |
bfad4005 | 740 | "\n" |
2caaadd1 MV |
741 | "The argument @var{shape} determines the number of dimensions\n" |
742 | "of the array and their shape. It is either an exact integer,\n" | |
743 | "giving the\n" | |
744 | "number of dimensions directly, or a list whose length\n" | |
745 | "specifies the number of dimensions and each element specified\n" | |
746 | "the lower and optionally the upper bound of the corresponding\n" | |
747 | "dimension.\n" | |
748 | "When the element is list of two elements, these elements\n" | |
749 | "give the lower and upper bounds. When it is an exact\n" | |
750 | "integer, it gives only the lower bound.") | |
f301dbf3 | 751 | #define FUNC_NAME s_scm_list_to_typed_array |
0f2d19dd | 752 | { |
2caaadd1 | 753 | SCM row; |
0f2d19dd | 754 | SCM ra; |
bcbbea0e | 755 | scm_t_array_handle handle; |
bfad4005 | 756 | |
bfad4005 | 757 | row = lst; |
2caaadd1 | 758 | if (scm_is_integer (shape)) |
0f2d19dd | 759 | { |
2caaadd1 MV |
760 | size_t k = scm_to_size_t (shape); |
761 | shape = SCM_EOL; | |
bfad4005 MV |
762 | while (k-- > 0) |
763 | { | |
764 | shape = scm_cons (scm_length (row), shape); | |
2caaadd1 | 765 | if (k > 0 && !scm_is_null (row)) |
bfad4005 MV |
766 | row = scm_car (row); |
767 | } | |
768 | } | |
769 | else | |
770 | { | |
2caaadd1 MV |
771 | SCM shape_spec = shape; |
772 | shape = SCM_EOL; | |
bfad4005 MV |
773 | while (1) |
774 | { | |
2caaadd1 MV |
775 | SCM spec = scm_car (shape_spec); |
776 | if (scm_is_pair (spec)) | |
777 | shape = scm_cons (spec, shape); | |
778 | else | |
779 | shape = scm_cons (scm_list_2 (spec, | |
780 | scm_sum (scm_sum (spec, | |
781 | scm_length (row)), | |
782 | scm_from_int (-1))), | |
783 | shape); | |
784 | shape_spec = scm_cdr (shape_spec); | |
785 | if (scm_is_pair (shape_spec)) | |
786 | { | |
787 | if (!scm_is_null (row)) | |
788 | row = scm_car (row); | |
789 | } | |
bfad4005 MV |
790 | else |
791 | break; | |
792 | } | |
0f2d19dd | 793 | } |
bfad4005 | 794 | |
f0b91039 MV |
795 | ra = scm_make_typed_array (type, SCM_UNSPECIFIED, |
796 | scm_reverse_x (shape, SCM_EOL)); | |
20930f28 | 797 | |
bcbbea0e | 798 | scm_array_get_handle (ra, &handle); |
943a0a87 | 799 | list_to_array (lst, &handle, 0, 0); |
bcbbea0e MV |
800 | scm_array_handle_release (&handle); |
801 | ||
802 | return ra; | |
0f2d19dd | 803 | } |
1bbd0b84 | 804 | #undef FUNC_NAME |
0f2d19dd | 805 | |
f301dbf3 MV |
806 | SCM_DEFINE (scm_list_to_array, "list->array", 2, 0, 0, |
807 | (SCM ndim, SCM lst), | |
808 | "Return an array with elements the same as those of @var{lst}.") | |
809 | #define FUNC_NAME s_scm_list_to_array | |
810 | { | |
811 | return scm_list_to_typed_array (SCM_BOOL_T, ndim, lst); | |
812 | } | |
813 | #undef FUNC_NAME | |
814 | ||
e0e49670 MV |
815 | /* Print dimension DIM of ARRAY. |
816 | */ | |
0f2d19dd | 817 | |
e0e49670 | 818 | static int |
943a0a87 | 819 | scm_i_print_array_dimension (scm_t_array_handle *h, int dim, int pos, |
e0e49670 MV |
820 | SCM port, scm_print_state *pstate) |
821 | { | |
943a0a87 AW |
822 | if (dim == h->ndims) |
823 | scm_iprin1 (scm_array_handle_ref (h, pos), port, pstate); | |
824 | else | |
e0e49670 | 825 | { |
943a0a87 AW |
826 | ssize_t i; |
827 | scm_putc ('(', port); | |
828 | for (i = h->dims[dim].lbnd; i <= h->dims[dim].ubnd; | |
829 | i++, pos += h->dims[dim].inc) | |
830 | { | |
831 | scm_i_print_array_dimension (h, dim+1, pos, port, pstate); | |
832 | if (i < h->dims[dim].ubnd) | |
833 | scm_putc (' ', port); | |
834 | } | |
835 | scm_putc (')', port); | |
e0e49670 | 836 | } |
e0e49670 MV |
837 | return 1; |
838 | } | |
839 | ||
943a0a87 | 840 | /* Print an array. |
e0e49670 MV |
841 | */ |
842 | ||
e0e49670 MV |
843 | static int |
844 | scm_i_print_array (SCM array, SCM port, scm_print_state *pstate) | |
845 | { | |
943a0a87 | 846 | scm_t_array_handle h; |
e0e49670 | 847 | long i; |
2caaadd1 | 848 | int print_lbnds = 0, zero_size = 0, print_lens = 0; |
e0e49670 | 849 | |
943a0a87 AW |
850 | scm_array_get_handle (array, &h); |
851 | ||
e0e49670 | 852 | scm_putc ('#', port); |
943a0a87 AW |
853 | if (h.ndims != 1 || h.dims[0].lbnd != 0) |
854 | scm_intprint (h.ndims, 10, port); | |
855 | if (h.element_type != SCM_ARRAY_ELEMENT_TYPE_SCM) | |
856 | scm_write (scm_array_handle_element_type (&h), port); | |
20930f28 | 857 | |
943a0a87 | 858 | for (i = 0; i < h.ndims; i++) |
2caaadd1 | 859 | { |
943a0a87 | 860 | if (h.dims[i].lbnd != 0) |
2caaadd1 | 861 | print_lbnds = 1; |
943a0a87 | 862 | if (h.dims[i].ubnd - h.dims[i].lbnd + 1 == 0) |
2caaadd1 MV |
863 | zero_size = 1; |
864 | else if (zero_size) | |
865 | print_lens = 1; | |
866 | } | |
867 | ||
868 | if (print_lbnds || print_lens) | |
943a0a87 | 869 | for (i = 0; i < h.ndims; i++) |
e0e49670 | 870 | { |
2caaadd1 | 871 | if (print_lbnds) |
e0e49670 MV |
872 | { |
873 | scm_putc ('@', port); | |
943a0a87 | 874 | scm_intprint (h.dims[i].lbnd, 10, port); |
2caaadd1 MV |
875 | } |
876 | if (print_lens) | |
877 | { | |
878 | scm_putc (':', port); | |
943a0a87 | 879 | scm_intprint (h.dims[i].ubnd - h.dims[i].lbnd + 1, |
2caaadd1 | 880 | 10, port); |
e0e49670 | 881 | } |
e0e49670 MV |
882 | } |
883 | ||
943a0a87 | 884 | if (h.ndims == 0) |
5f37cb63 MV |
885 | { |
886 | /* Rank zero arrays, which are really just scalars, are printed | |
887 | specially. The consequent way would be to print them as | |
888 | ||
889 | #0 OBJ | |
890 | ||
891 | where OBJ is the printed representation of the scalar, but we | |
892 | print them instead as | |
893 | ||
894 | #0(OBJ) | |
895 | ||
896 | to make them look less strange. | |
897 | ||
898 | Just printing them as | |
899 | ||
900 | OBJ | |
901 | ||
902 | would be correct in a way as well, but zero rank arrays are | |
903 | not really the same as Scheme values since they are boxed and | |
904 | can be modified with array-set!, say. | |
905 | */ | |
906 | scm_putc ('(', port); | |
943a0a87 | 907 | scm_i_print_array_dimension (&h, 0, 0, port, pstate); |
5f37cb63 MV |
908 | scm_putc (')', port); |
909 | return 1; | |
910 | } | |
911 | else | |
943a0a87 | 912 | return scm_i_print_array_dimension (&h, 0, 0, port, pstate); |
e0e49670 | 913 | } |
1cc91f1b | 914 | |
bfad4005 MV |
915 | /* Read an array. This function can also read vectors and uniform |
916 | vectors. Also, the conflict between '#f' and '#f32' and '#f64' is | |
917 | handled here. | |
918 | ||
919 | C is the first character read after the '#'. | |
920 | */ | |
921 | ||
bfad4005 | 922 | static SCM |
f301dbf3 | 923 | tag_to_type (const char *tag, SCM port) |
bfad4005 | 924 | { |
5f37cb63 MV |
925 | if (*tag == '\0') |
926 | return SCM_BOOL_T; | |
927 | else | |
928 | return scm_from_locale_symbol (tag); | |
bfad4005 MV |
929 | } |
930 | ||
2caaadd1 MV |
931 | static int |
932 | read_decimal_integer (SCM port, int c, ssize_t *resp) | |
933 | { | |
934 | ssize_t sign = 1; | |
935 | ssize_t res = 0; | |
936 | int got_it = 0; | |
937 | ||
938 | if (c == '-') | |
939 | { | |
940 | sign = -1; | |
941 | c = scm_getc (port); | |
942 | } | |
943 | ||
944 | while ('0' <= c && c <= '9') | |
945 | { | |
946 | res = 10*res + c-'0'; | |
947 | got_it = 1; | |
948 | c = scm_getc (port); | |
949 | } | |
950 | ||
951 | if (got_it) | |
f30e1bdf | 952 | *resp = sign * res; |
2caaadd1 MV |
953 | return c; |
954 | } | |
955 | ||
bfad4005 MV |
956 | SCM |
957 | scm_i_read_array (SCM port, int c) | |
958 | { | |
5a6d139b | 959 | ssize_t rank; |
bfad4005 MV |
960 | int got_rank; |
961 | char tag[80]; | |
962 | int tag_len; | |
963 | ||
2caaadd1 | 964 | SCM shape = SCM_BOOL_F, elements; |
bfad4005 MV |
965 | |
966 | /* XXX - shortcut for ordinary vectors. Shouldn't be necessary but | |
967 | the array code can not deal with zero-length dimensions yet, and | |
968 | we want to allow zero-length vectors, of course. | |
969 | */ | |
970 | if (c == '(') | |
971 | { | |
972 | scm_ungetc (c, port); | |
973 | return scm_vector (scm_read (port)); | |
974 | } | |
975 | ||
976 | /* Disambiguate between '#f' and uniform floating point vectors. | |
977 | */ | |
978 | if (c == 'f') | |
979 | { | |
980 | c = scm_getc (port); | |
981 | if (c != '3' && c != '6') | |
982 | { | |
983 | if (c != EOF) | |
984 | scm_ungetc (c, port); | |
985 | return SCM_BOOL_F; | |
986 | } | |
987 | rank = 1; | |
988 | got_rank = 1; | |
989 | tag[0] = 'f'; | |
990 | tag_len = 1; | |
991 | goto continue_reading_tag; | |
992 | } | |
993 | ||
2caaadd1 MV |
994 | /* Read rank. |
995 | */ | |
996 | rank = 1; | |
997 | c = read_decimal_integer (port, c, &rank); | |
998 | if (rank < 0) | |
999 | scm_i_input_error (NULL, port, "array rank must be non-negative", | |
1000 | SCM_EOL); | |
bfad4005 | 1001 | |
2caaadd1 MV |
1002 | /* Read tag. |
1003 | */ | |
bfad4005 MV |
1004 | tag_len = 0; |
1005 | continue_reading_tag: | |
2caaadd1 | 1006 | while (c != EOF && c != '(' && c != '@' && c != ':' && tag_len < 80) |
bfad4005 MV |
1007 | { |
1008 | tag[tag_len++] = c; | |
1009 | c = scm_getc (port); | |
1010 | } | |
1011 | tag[tag_len] = '\0'; | |
1012 | ||
2caaadd1 MV |
1013 | /* Read shape. |
1014 | */ | |
1015 | if (c == '@' || c == ':') | |
bfad4005 | 1016 | { |
2caaadd1 | 1017 | shape = SCM_EOL; |
5f37cb63 MV |
1018 | |
1019 | do | |
bfad4005 | 1020 | { |
2caaadd1 MV |
1021 | ssize_t lbnd = 0, len = 0; |
1022 | SCM s; | |
5f37cb63 | 1023 | |
2caaadd1 | 1024 | if (c == '@') |
5f37cb63 | 1025 | { |
5f37cb63 | 1026 | c = scm_getc (port); |
2caaadd1 | 1027 | c = read_decimal_integer (port, c, &lbnd); |
5f37cb63 | 1028 | } |
2caaadd1 MV |
1029 | |
1030 | s = scm_from_ssize_t (lbnd); | |
1031 | ||
1032 | if (c == ':') | |
5f37cb63 | 1033 | { |
5f37cb63 | 1034 | c = scm_getc (port); |
2caaadd1 | 1035 | c = read_decimal_integer (port, c, &len); |
f30e1bdf LC |
1036 | if (len < 0) |
1037 | scm_i_input_error (NULL, port, | |
1038 | "array length must be non-negative", | |
1039 | SCM_EOL); | |
1040 | ||
2caaadd1 | 1041 | s = scm_list_2 (s, scm_from_ssize_t (lbnd+len-1)); |
5f37cb63 | 1042 | } |
2caaadd1 MV |
1043 | |
1044 | shape = scm_cons (s, shape); | |
1045 | } while (c == '@' || c == ':'); | |
1046 | ||
1047 | shape = scm_reverse_x (shape, SCM_EOL); | |
bfad4005 MV |
1048 | } |
1049 | ||
1050 | /* Read nested lists of elements. | |
1051 | */ | |
1052 | if (c != '(') | |
1053 | scm_i_input_error (NULL, port, | |
1054 | "missing '(' in vector or array literal", | |
1055 | SCM_EOL); | |
1056 | scm_ungetc (c, port); | |
1057 | elements = scm_read (port); | |
1058 | ||
2caaadd1 | 1059 | if (scm_is_false (shape)) |
5a6d139b | 1060 | shape = scm_from_ssize_t (rank); |
2caaadd1 MV |
1061 | else if (scm_ilength (shape) != rank) |
1062 | scm_i_input_error | |
1063 | (NULL, port, | |
1064 | "the number of shape specifications must match the array rank", | |
1065 | SCM_EOL); | |
bfad4005 | 1066 | |
5f37cb63 MV |
1067 | /* Handle special print syntax of rank zero arrays; see |
1068 | scm_i_print_array for a rationale. | |
1069 | */ | |
1070 | if (rank == 0) | |
2caaadd1 MV |
1071 | { |
1072 | if (!scm_is_pair (elements)) | |
1073 | scm_i_input_error (NULL, port, | |
1074 | "too few elements in array literal, need 1", | |
1075 | SCM_EOL); | |
1076 | if (!scm_is_null (SCM_CDR (elements))) | |
1077 | scm_i_input_error (NULL, port, | |
1078 | "too many elements in array literal, want 1", | |
1079 | SCM_EOL); | |
1080 | elements = SCM_CAR (elements); | |
1081 | } | |
5f37cb63 MV |
1082 | |
1083 | /* Construct array. | |
1084 | */ | |
2caaadd1 | 1085 | return scm_list_to_typed_array (tag_to_type (tag, port), shape, elements); |
bfad4005 MV |
1086 | } |
1087 | ||
ab1be174 | 1088 | |
0f2d19dd | 1089 | static SCM |
e841c3e0 | 1090 | array_mark (SCM ptr) |
0f2d19dd | 1091 | { |
04b87de5 | 1092 | return SCM_I_ARRAY_V (ptr); |
0f2d19dd JB |
1093 | } |
1094 | ||
1be6b49c | 1095 | static size_t |
e841c3e0 | 1096 | array_free (SCM ptr) |
0f2d19dd | 1097 | { |
04b87de5 MV |
1098 | scm_gc_free (SCM_I_ARRAY_MEM (ptr), |
1099 | (sizeof (scm_i_t_array) | |
1100 | + SCM_I_ARRAY_NDIM (ptr) * sizeof (scm_t_array_dim)), | |
4c9419ac MV |
1101 | "array"); |
1102 | return 0; | |
0f2d19dd JB |
1103 | } |
1104 | ||
2a610be5 AW |
1105 | static SCM |
1106 | array_handle_ref (scm_t_array_handle *h, size_t pos) | |
1107 | { | |
1108 | return scm_c_generalized_vector_ref (SCM_I_ARRAY_V (h->array), pos); | |
1109 | } | |
1110 | ||
1111 | static void | |
1112 | array_handle_set (scm_t_array_handle *h, size_t pos, SCM val) | |
1113 | { | |
1114 | scm_c_generalized_vector_set_x (SCM_I_ARRAY_V (h->array), pos, val); | |
1115 | } | |
1116 | ||
1117 | /* FIXME: should be handle for vect? maybe not, because of dims */ | |
1118 | static void | |
1119 | array_get_handle (SCM array, scm_t_array_handle *h) | |
1120 | { | |
1121 | scm_t_array_handle vh; | |
1122 | scm_array_get_handle (SCM_I_ARRAY_V (array), &vh); | |
1123 | h->element_type = vh.element_type; | |
1124 | h->elements = vh.elements; | |
1125 | h->writable_elements = vh.writable_elements; | |
1126 | scm_array_handle_release (&vh); | |
1127 | ||
1128 | h->dims = SCM_I_ARRAY_DIMS (array); | |
1129 | h->ndims = SCM_I_ARRAY_NDIM (array); | |
1130 | h->base = SCM_I_ARRAY_BASE (array); | |
1131 | } | |
1132 | ||
1133 | SCM_ARRAY_IMPLEMENTATION (scm_i_tc16_array, 0xffff, | |
1134 | array_handle_ref, array_handle_set, | |
1135 | array_get_handle); | |
1136 | ||
0f2d19dd | 1137 | void |
2fa901a5 | 1138 | scm_init_arrays () |
0f2d19dd | 1139 | { |
04b87de5 MV |
1140 | scm_i_tc16_array = scm_make_smob_type ("array", 0); |
1141 | scm_set_smob_mark (scm_i_tc16_array, array_mark); | |
1142 | scm_set_smob_free (scm_i_tc16_array, array_free); | |
1143 | scm_set_smob_print (scm_i_tc16_array, scm_i_print_array); | |
1144 | scm_set_smob_equalp (scm_i_tc16_array, scm_array_equal_p); | |
1145 | ||
0f2d19dd | 1146 | scm_add_feature ("array"); |
20930f28 | 1147 | |
2fa901a5 | 1148 | #include "libguile/arrays.x" |
bfad4005 | 1149 | |
0f2d19dd | 1150 | } |
89e00824 ML |
1151 | |
1152 | /* | |
1153 | Local Variables: | |
1154 | c-file-style: "gnu" | |
1155 | End: | |
1156 | */ |