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add isl_version
[isl.git] / isl_input.c
blobc9c4258af5c02568787da6c7acba3a4892dc9bd2
1 /*
2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
4 *
5 * Use of this software is governed by the GNU LGPLv2.1 license
6 *
7 * Written by Sven Verdoolaege, K.U.Leuven, Departement
8 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
9 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
10 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
11 */
12
13 #include <ctype.h>
14 #include <stdio.h>
15 #include <string.h>
16 #include <strings.h>
17 #include <isl_set.h>
18 #include <isl_seq.h>
19 #include <isl_div.h>
20 #include "isl_stream.h"
21 #include "isl_map_private.h"
22 #include "isl_obj.h"
23 #include "isl_polynomial_private.h"
24
25 struct variable {
26 char *name;
27 int pos;
28 struct variable *next;
29 };
30
31 struct vars {
32 struct isl_ctx *ctx;
33 int n;
34 struct variable *v;
35 };
36
37 static struct vars *vars_new(struct isl_ctx *ctx)
38 {
39 struct vars *v;
40 v = isl_alloc_type(ctx, struct vars);
41 if (!v)
42 return NULL;
43 v->ctx = ctx;
44 v->n = 0;
45 v->v = NULL;
46 return v;
47 }
48
49 static void variable_free(struct variable *var)
50 {
51 while (var) {
52 struct variable *next = var->next;
53 free(var->name);
54 free(var);
55 var = next;
56 }
57 }
58
59 static void vars_free(struct vars *v)
60 {
61 if (!v)
62 return;
63 variable_free(v->v);
64 free(v);
65 }
66
67 static void vars_drop(struct vars *v, int n)
68 {
69 struct variable *var;
70
71 if (!v)
72 return;
73
74 v->n -= n;
75
76 var = v->v;
77 while (--n >= 0) {
78 struct variable *next = var->next;
79 free(var->name);
80 free(var);
81 var = next;
82 }
83 v->v = var;
84 }
85
86 static struct variable *variable_new(struct vars *v, const char *name, int len,
87 int pos)
88 {
89 struct variable *var;
90 var = isl_alloc_type(v->ctx, struct variable);
91 if (!var)
92 goto error;
93 var->name = strdup(name);
94 var->name[len] = '\0';
95 var->pos = pos;
96 var->next = v->v;
97 return var;
98 error:
99 variable_free(v->v);
100 return NULL;
101 }
102
103 static int vars_pos(struct vars *v, const char *s, int len)
104 {
105 int pos;
106 struct variable *q;
107
108 if (len == -1)
109 len = strlen(s);
110 for (q = v->v; q; q = q->next) {
111 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
112 break;
113 }
114 if (q)
115 pos = q->pos;
116 else {
117 pos = v->n;
118 v->v = variable_new(v, s, len, v->n);
119 if (!v->v)
120 return -1;
121 v->n++;
122 }
123 return pos;
124 }
125
126 static __isl_give isl_basic_map *set_name(__isl_take isl_basic_map *bmap,
127 enum isl_dim_type type, unsigned pos, char *name)
128 {
129 char *prime;
130
131 if (!bmap)
132 return NULL;
133 if (!name)
134 return bmap;
135
136 prime = strchr(name, '\'');
137 if (prime)
138 *prime = '\0';
139 bmap->dim = isl_dim_set_name(bmap->dim, type, pos, name);
140 if (prime)
141 *prime = '\'';
142
143 if (!bmap->dim)
144 goto error;
145
146 return bmap;
147 error:
148 isl_basic_map_free(bmap);
149 return NULL;
150 }
151
152 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
153 {
154 struct isl_token *tok = NULL;
155 struct isl_vec *aff;
156 int sign = 1;
157
158 aff = isl_vec_alloc(v->ctx, 1 + v->n);
159 isl_seq_clr(aff->el, aff->size);
160 if (!aff)
161 return NULL;
162
163 for (;;) {
164 tok = isl_stream_next_token(s);
165 if (!tok) {
166 isl_stream_error(s, NULL, "unexpected EOF");
167 goto error;
168 }
169 if (tok->type == ISL_TOKEN_IDENT) {
170 int n = v->n;
171 int pos = vars_pos(v, tok->u.s, -1);
172 if (pos < 0)
173 goto error;
174 if (pos >= n) {
175 isl_stream_error(s, tok, "unknown identifier");
176 isl_token_free(tok);
177 goto error;
178 }
179 if (sign > 0)
180 isl_int_add_ui(aff->el[1 + pos],
181 aff->el[1 + pos], 1);
182 else
183 isl_int_sub_ui(aff->el[1 + pos],
184 aff->el[1 + pos], 1);
185 sign = 1;
186 } else if (tok->type == ISL_TOKEN_VALUE) {
187 struct isl_token *tok2;
188 int n = v->n;
189 int pos = -1;
190 if (isl_stream_eat_if_available(s, '*') &&
191 !isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
192 isl_stream_error(s, NULL, "missing identifier");
193 goto error;
194 }
195 tok2 = isl_stream_next_token(s);
196 if (tok2 && tok2->type == ISL_TOKEN_IDENT) {
197 pos = vars_pos(v, tok2->u.s, -1);
198 if (pos < 0)
199 goto error;
200 if (pos >= n) {
201 isl_stream_error(s, tok2,
202 "unknown identifier");
203 isl_token_free(tok);
204 isl_token_free(tok2);
205 goto error;
206 }
207 isl_token_free(tok2);
208 } else if (tok2)
209 isl_stream_push_token(s, tok2);
210 if (sign < 0)
211 isl_int_neg(tok->u.v, tok->u.v);
212 isl_int_add(aff->el[1 + pos],
213 aff->el[1 + pos], tok->u.v);
214 sign = 1;
215 } else if (tok->type == '-') {
216 sign = -sign;
217 } else if (tok->type == '+') {
218 /* nothing */
219 } else {
220 isl_stream_push_token(s, tok);
221 break;
222 }
223 isl_token_free(tok);
224 }
225
226 return aff;
227 error:
228 isl_vec_free(aff);
229 return NULL;
230 }
231
232 static __isl_give isl_basic_map *read_var_list(struct isl_stream *s,
233 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
234 {
235 int i = 0;
236 struct isl_token *tok;
237
238 while ((tok = isl_stream_next_token(s)) != NULL) {
239 int new_name = 0;
240
241 if (tok->type == ISL_TOKEN_IDENT) {
242 int n = v->n;
243 int p = vars_pos(v, tok->u.s, -1);
244 if (p < 0)
245 goto error;
246 new_name = p >= n;
247 }
248
249 if (new_name) {
250 bmap = isl_basic_map_add(bmap, type, 1);
251 bmap = set_name(bmap, type, i, v->v->name);
252 isl_token_free(tok);
253 } else if (tok->type == ISL_TOKEN_IDENT ||
254 tok->type == ISL_TOKEN_VALUE) {
255 struct isl_vec *vec;
256 int k;
257 if (type == isl_dim_param) {
258 isl_stream_error(s, tok,
259 "expecting unique identifier");
260 goto error;
261 }
262 isl_stream_push_token(s, tok);
263 tok = NULL;
264 vec = accept_affine(s, v);
265 if (!vec)
266 goto error;
267 v->v = variable_new(v, "", 0, v->n);
268 if (!v->v)
269 goto error;
270 v->n++;
271 bmap = isl_basic_map_add(bmap, type, 1);
272 bmap = isl_basic_map_extend_constraints(bmap, 1, 0);
273 k = isl_basic_map_alloc_equality(bmap);
274 if (k >= 0) {
275 isl_seq_cpy(bmap->eq[k], vec->el, vec->size);
276 isl_int_set_si(bmap->eq[k][vec->size], -1);
277 }
278 isl_vec_free(vec);
279 if (k < 0)
280 goto error;
281 } else
282 break;
283
284 tok = isl_stream_next_token(s);
285 if (!tok || tok->type != ',')
286 break;
287
288 isl_token_free(tok);
289 i++;
290 }
291 if (tok)
292 isl_stream_push_token(s, tok);
293
294 return bmap;
295 error:
296 isl_token_free(tok);
297 isl_basic_map_free(bmap);
298 return NULL;
299 }
300
301 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
302 struct vars *v)
303 {
304 struct isl_vec *vec;
305 struct isl_mat *mat;
306 struct isl_token *tok = NULL;
307
308 vec = accept_affine(s, v);
309 mat = isl_mat_from_row_vec(vec);
310 if (!mat)
311 return NULL;
312
313 for (;;) {
314 tok = isl_stream_next_token(s);
315 if (!tok) {
316 isl_stream_error(s, NULL, "unexpected EOF");
317 goto error;
318 }
319 if (tok->type != ',') {
320 isl_stream_push_token(s, tok);
321 break;
322 }
323 isl_token_free(tok);
324
325 vec = accept_affine(s, v);
326 mat = isl_mat_vec_concat(mat, vec);
327 if (!mat)
328 return NULL;
329 }
330
331 return mat;
332 error:
333 isl_mat_free(mat);
334 return NULL;
335 }
336
337 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
338 struct vars *v, struct isl_basic_map *bmap, int k)
339 {
340 struct isl_token *tok;
341 int seen_paren = 0;
342 struct isl_vec *aff;
343
344 if (isl_stream_eat(s, '['))
345 goto error;
346
347 tok = isl_stream_next_token(s);
348 if (!tok)
349 goto error;
350 if (tok->type == '(') {
351 seen_paren = 1;
352 isl_token_free(tok);
353 } else
354 isl_stream_push_token(s, tok);
355
356 aff = accept_affine(s, v);
357 if (!aff)
358 goto error;
359
360 isl_seq_cpy(bmap->div[k] + 1, aff->el, aff->size);
361
362 isl_vec_free(aff);
363
364 if (seen_paren && isl_stream_eat(s, ')'))
365 goto error;
366 if (isl_stream_eat(s, '/'))
367 goto error;
368
369 tok = isl_stream_next_token(s);
370 if (!tok)
371 goto error;
372 if (tok->type != ISL_TOKEN_VALUE) {
373 isl_stream_error(s, tok, "expected denominator");
374 isl_stream_push_token(s, tok);
375 goto error;
376 }
377 isl_int_set(bmap->div[k][0], tok->u.v);
378 isl_token_free(tok);
379
380 if (isl_stream_eat(s, ']'))
381 goto error;
382
383 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
384 goto error;
385
386 return bmap;
387 error:
388 isl_basic_map_free(bmap);
389 return NULL;
390 }
391
392 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
393 struct vars *v, struct isl_basic_map *bmap)
394 {
395 struct isl_token *tok;
396
397 while ((tok = isl_stream_next_token(s)) != NULL) {
398 int k;
399 int p;
400 int n = v->n;
401 unsigned total = isl_basic_map_total_dim(bmap);
402
403 if (tok->type != ISL_TOKEN_IDENT)
404 break;
405
406 p = vars_pos(v, tok->u.s, -1);
407 if (p < 0)
408 goto error;
409 if (p < n) {
410 isl_stream_error(s, tok, "expecting unique identifier");
411 goto error;
412 }
413 isl_token_free(tok);
414
415 bmap = isl_basic_map_cow(bmap);
416 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
417 1, 0, 2);
418
419 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
420 goto error;
421 isl_seq_clr(bmap->div[k], 1 + 1 + total);
422
423 tok = isl_stream_next_token(s);
424 if (tok && tok->type == '=') {
425 isl_token_free(tok);
426 bmap = add_div_definition(s, v, bmap, k);
427 tok = isl_stream_next_token(s);
428 }
429
430 if (!tok || tok->type != ',')
431 break;
432
433 isl_token_free(tok);
434 }
435 if (tok)
436 isl_stream_push_token(s, tok);
437
438 return bmap;
439 error:
440 isl_token_free(tok);
441 isl_basic_map_free(bmap);
442 return NULL;
443 }
444
445 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
446 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
447 {
448 struct isl_token *tok;
449
450 tok = isl_stream_next_token(s);
451 if (!tok || tok->type != '[') {
452 isl_stream_error(s, tok, "expecting '['");
453 goto error;
454 }
455 isl_token_free(tok);
456 bmap = read_var_list(s, bmap, type, v);
457 tok = isl_stream_next_token(s);
458 if (!tok || tok->type != ']') {
459 isl_stream_error(s, tok, "expecting ']'");
460 goto error;
461 }
462 isl_token_free(tok);
463
464 return bmap;
465 error:
466 if (tok)
467 isl_token_free(tok);
468 isl_basic_map_free(bmap);
469 return NULL;
470 }
471
472 static struct isl_basic_map *add_constraints(struct isl_stream *s,
473 struct vars *v, struct isl_basic_map *bmap);
474
475 static struct isl_basic_map *add_exists(struct isl_stream *s,
476 struct vars *v, struct isl_basic_map *bmap)
477 {
478 struct isl_token *tok;
479 int n = v->n;
480 int extra;
481 int seen_paren = 0;
482 int i;
483 unsigned total;
484
485 tok = isl_stream_next_token(s);
486 if (!tok)
487 goto error;
488 if (tok->type == '(') {
489 seen_paren = 1;
490 isl_token_free(tok);
491 } else
492 isl_stream_push_token(s, tok);
493
494 bmap = read_defined_var_list(s, v, bmap);
495 if (!bmap)
496 goto error;
497
498 if (isl_stream_eat(s, ':'))
499 goto error;
500 bmap = add_constraints(s, v, bmap);
501 if (seen_paren && isl_stream_eat(s, ')'))
502 goto error;
503 return bmap;
504 error:
505 isl_basic_map_free(bmap);
506 return NULL;
507 }
508
509 static __isl_give isl_basic_map *construct_constraint(
510 __isl_take isl_basic_map *bmap, enum isl_token_type type,
511 isl_int *left, isl_int *right)
512 {
513 int k;
514 unsigned len;
515 struct isl_ctx *ctx;
516
517 if (!bmap)
518 return NULL;
519 len = 1 + isl_basic_map_total_dim(bmap);
520 ctx = bmap->ctx;
521
522 k = isl_basic_map_alloc_inequality(bmap);
523 if (k < 0)
524 goto error;
525 if (type == ISL_TOKEN_LE)
526 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
527 ctx->one, right,
528 len);
529 else if (type == ISL_TOKEN_GE)
530 isl_seq_combine(bmap->ineq[k], ctx->one, left,
531 ctx->negone, right,
532 len);
533 else if (type == ISL_TOKEN_LT) {
534 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
535 ctx->one, right,
536 len);
537 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
538 } else if (type == ISL_TOKEN_GT) {
539 isl_seq_combine(bmap->ineq[k], ctx->one, left,
540 ctx->negone, right,
541 len);
542 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
543 } else {
544 isl_seq_combine(bmap->ineq[k], ctx->one, left,
545 ctx->negone, right,
546 len);
547 isl_basic_map_inequality_to_equality(bmap, k);
548 }
549
550 return bmap;
551 error:
552 isl_basic_map_free(bmap);
553 return NULL;
554 }
555
556 static int is_comparator(struct isl_token *tok)
557 {
558 if (!tok)
559 return 0;
560
561 switch (tok->type) {
562 case ISL_TOKEN_LT:
563 case ISL_TOKEN_GT:
564 case ISL_TOKEN_LE:
565 case ISL_TOKEN_GE:
566 case '=':
567 return 1;
568 default:
569 return 0;
570 }
571 }
572
573 static struct isl_basic_map *add_constraint(struct isl_stream *s,
574 struct vars *v, struct isl_basic_map *bmap)
575 {
576 int i, j;
577 unsigned total = isl_basic_map_total_dim(bmap);
578 struct isl_token *tok = NULL;
579 struct isl_mat *aff1 = NULL, *aff2 = NULL;
580
581 tok = isl_stream_next_token(s);
582 if (!tok)
583 goto error;
584 if (tok->type == ISL_TOKEN_EXISTS) {
585 isl_token_free(tok);
586 return add_exists(s, v, bmap);
587 }
588 isl_stream_push_token(s, tok);
589 tok = NULL;
590
591 bmap = isl_basic_map_cow(bmap);
592
593 aff1 = accept_affine_list(s, v);
594 if (!aff1)
595 goto error;
596 tok = isl_stream_next_token(s);
597 if (!is_comparator(tok)) {
598 isl_stream_error(s, tok, "missing operator");
599 if (tok)
600 isl_stream_push_token(s, tok);
601 tok = NULL;
602 goto error;
603 }
604 isl_assert(aff1->ctx, aff1->n_col == 1 + total, goto error);
605 for (;;) {
606 aff2 = accept_affine_list(s, v);
607 if (!aff2)
608 goto error;
609 isl_assert(aff2->ctx, aff2->n_col == 1 + total, goto error);
610
611 bmap = isl_basic_map_extend_constraints(bmap, 0,
612 aff1->n_row * aff2->n_row);
613 for (i = 0; i < aff1->n_row; ++i)
614 for (j = 0; j < aff2->n_row; ++j)
615 bmap = construct_constraint(bmap, tok->type,
616 aff1->row[i], aff2->row[j]);
617 isl_token_free(tok);
618 isl_mat_free(aff1);
619 aff1 = aff2;
620
621 tok = isl_stream_next_token(s);
622 if (!is_comparator(tok)) {
623 if (tok)
624 isl_stream_push_token(s, tok);
625 break;
626 }
627 }
628 isl_mat_free(aff1);
629
630 return bmap;
631 error:
632 if (tok)
633 isl_token_free(tok);
634 isl_mat_free(aff1);
635 isl_mat_free(aff2);
636 isl_basic_map_free(bmap);
637 return NULL;
638 }
639
640 static struct isl_basic_map *add_constraints(struct isl_stream *s,
641 struct vars *v, struct isl_basic_map *bmap)
642 {
643 struct isl_token *tok;
644
645 for (;;) {
646 bmap = add_constraint(s, v, bmap);
647 if (!bmap)
648 return NULL;
649 tok = isl_stream_next_token(s);
650 if (!tok) {
651 isl_stream_error(s, NULL, "unexpected EOF");
652 goto error;
653 }
654 if (tok->type != ISL_TOKEN_AND)
655 break;
656 isl_token_free(tok);
657 }
658 isl_stream_push_token(s, tok);
659
660 return bmap;
661 error:
662 if (tok)
663 isl_token_free(tok);
664 isl_basic_map_free(bmap);
665 return NULL;
666 }
667
668 static struct isl_basic_map *read_disjunct(struct isl_stream *s,
669 struct vars *v, __isl_take isl_dim *dim)
670 {
671 int seen_paren = 0;
672 struct isl_token *tok;
673 struct isl_basic_map *bmap;
674
675 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
676 if (!bmap)
677 return NULL;
678
679 tok = isl_stream_next_token(s);
680 if (!tok)
681 goto error;
682 if (tok->type == '(') {
683 seen_paren = 1;
684 isl_token_free(tok);
685 } else
686 isl_stream_push_token(s, tok);
687
688 bmap = add_constraints(s, v, bmap);
689 bmap = isl_basic_map_simplify(bmap);
690 bmap = isl_basic_map_finalize(bmap);
691
692 if (seen_paren && isl_stream_eat(s, ')'))
693 goto error;
694
695 return bmap;
696 error:
697 isl_basic_map_free(bmap);
698 return NULL;
699 }
700
701 static struct isl_map *read_disjuncts(struct isl_stream *s,
702 struct vars *v, __isl_take isl_dim *dim)
703 {
704 struct isl_token *tok;
705 struct isl_map *map;
706
707 tok = isl_stream_next_token(s);
708 if (!tok) {
709 isl_stream_error(s, NULL, "unexpected EOF");
710 goto error;
711 }
712 if (tok->type == '}') {
713 isl_stream_push_token(s, tok);
714 return isl_map_universe(dim);
715 }
716 isl_stream_push_token(s, tok);
717
718 map = isl_map_empty(isl_dim_copy(dim));
719 for (;;) {
720 struct isl_basic_map *bmap;
721 int n = v->n;
722
723 bmap = read_disjunct(s, v, isl_dim_copy(dim));
724 map = isl_map_union(map, isl_map_from_basic_map(bmap));
725
726 vars_drop(v, v->n - n);
727
728 tok = isl_stream_next_token(s);
729 if (!tok || tok->type != ISL_TOKEN_OR)
730 break;
731 isl_token_free(tok);
732 }
733 if (tok)
734 isl_stream_push_token(s, tok);
735
736 isl_dim_free(dim);
737 return map;
738 error:
739 isl_dim_free(dim);
740 return NULL;
741 }
742
743 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
744 {
745 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
746 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
747 isl_basic_map_dim(bmap, isl_dim_in) + pos;
748 pos -= isl_basic_map_dim(bmap, isl_dim_out);
749
750 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
751 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
752 pos -= isl_basic_map_dim(bmap, isl_dim_in);
753
754 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
755 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
756 isl_basic_map_dim(bmap, isl_dim_in) +
757 isl_basic_map_dim(bmap, isl_dim_out) + pos;
758 pos -= isl_basic_map_dim(bmap, isl_dim_div);
759
760 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
761 return 1 + pos;
762
763 return 0;
764 }
765
766 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
767 struct isl_stream *s, __isl_take isl_basic_map *bmap)
768 {
769 int j;
770 struct isl_token *tok;
771 int type;
772 int k;
773 isl_int *c;
774 unsigned nparam;
775 unsigned dim;
776
777 if (!bmap)
778 return NULL;
779
780 nparam = isl_basic_map_dim(bmap, isl_dim_param);
781 dim = isl_basic_map_dim(bmap, isl_dim_out);
782
783 tok = isl_stream_next_token(s);
784 if (!tok || tok->type != ISL_TOKEN_VALUE) {
785 isl_stream_error(s, tok, "expecting coefficient");
786 if (tok)
787 isl_stream_push_token(s, tok);
788 goto error;
789 }
790 if (!tok->on_new_line) {
791 isl_stream_error(s, tok, "coefficient should appear on new line");
792 isl_stream_push_token(s, tok);
793 goto error;
794 }
795
796 type = isl_int_get_si(tok->u.v);
797 isl_token_free(tok);
798
799 isl_assert(s->ctx, type == 0 || type == 1, goto error);
800 if (type == 0) {
801 k = isl_basic_map_alloc_equality(bmap);
802 c = bmap->eq[k];
803 } else {
804 k = isl_basic_map_alloc_inequality(bmap);
805 c = bmap->ineq[k];
806 }
807 if (k < 0)
808 goto error;
809
810 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
811 int pos;
812 tok = isl_stream_next_token(s);
813 if (!tok || tok->type != ISL_TOKEN_VALUE) {
814 isl_stream_error(s, tok, "expecting coefficient");
815 if (tok)
816 isl_stream_push_token(s, tok);
817 goto error;
818 }
819 if (tok->on_new_line) {
820 isl_stream_error(s, tok,
821 "coefficient should not appear on new line");
822 isl_stream_push_token(s, tok);
823 goto error;
824 }
825 pos = polylib_pos_to_isl_pos(bmap, j);
826 isl_int_set(c[pos], tok->u.v);
827 isl_token_free(tok);
828 }
829
830 return bmap;
831 error:
832 isl_basic_map_free(bmap);
833 return NULL;
834 }
835
836 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
837 int nparam)
838 {
839 int i;
840 struct isl_token *tok;
841 struct isl_token *tok2;
842 int n_row, n_col;
843 int on_new_line;
844 unsigned in = 0, out, local = 0;
845 struct isl_basic_map *bmap = NULL;
846
847 if (nparam < 0)
848 nparam = 0;
849
850 tok = isl_stream_next_token(s);
851 if (!tok) {
852 isl_stream_error(s, NULL, "unexpected EOF");
853 return NULL;
854 }
855 tok2 = isl_stream_next_token(s);
856 if (!tok2) {
857 isl_token_free(tok);
858 isl_stream_error(s, NULL, "unexpected EOF");
859 return NULL;
860 }
861 n_row = isl_int_get_si(tok->u.v);
862 n_col = isl_int_get_si(tok2->u.v);
863 on_new_line = tok2->on_new_line;
864 isl_token_free(tok2);
865 isl_token_free(tok);
866 isl_assert(s->ctx, !on_new_line, return NULL);
867 isl_assert(s->ctx, n_row >= 0, return NULL);
868 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
869 tok = isl_stream_next_token_on_same_line(s);
870 if (tok) {
871 if (tok->type != ISL_TOKEN_VALUE) {
872 isl_stream_error(s, tok,
873 "expecting number of output dimensions");
874 isl_stream_push_token(s, tok);
875 goto error;
876 }
877 out = isl_int_get_si(tok->u.v);
878 isl_token_free(tok);
879
880 tok = isl_stream_next_token_on_same_line(s);
881 if (!tok || tok->type != ISL_TOKEN_VALUE) {
882 isl_stream_error(s, tok,
883 "expecting number of input dimensions");
884 if (tok)
885 isl_stream_push_token(s, tok);
886 goto error;
887 }
888 in = isl_int_get_si(tok->u.v);
889 isl_token_free(tok);
890
891 tok = isl_stream_next_token_on_same_line(s);
892 if (!tok || tok->type != ISL_TOKEN_VALUE) {
893 isl_stream_error(s, tok,
894 "expecting number of existentials");
895 if (tok)
896 isl_stream_push_token(s, tok);
897 goto error;
898 }
899 local = isl_int_get_si(tok->u.v);
900 isl_token_free(tok);
901
902 tok = isl_stream_next_token_on_same_line(s);
903 if (!tok || tok->type != ISL_TOKEN_VALUE) {
904 isl_stream_error(s, tok,
905 "expecting number of parameters");
906 if (tok)
907 isl_stream_push_token(s, tok);
908 goto error;
909 }
910 nparam = isl_int_get_si(tok->u.v);
911 isl_token_free(tok);
912 if (n_col != 1 + out + in + local + nparam + 1) {
913 isl_stream_error(s, NULL,
914 "dimensions don't match");
915 goto error;
916 }
917 } else
918 out = n_col - 2 - nparam;
919 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
920 if (!bmap)
921 return NULL;
922
923 for (i = 0; i < local; ++i) {
924 int k = isl_basic_map_alloc_div(bmap);
925 if (k < 0)
926 goto error;
927 }
928
929 for (i = 0; i < n_row; ++i)
930 bmap = basic_map_read_polylib_constraint(s, bmap);
931
932 tok = isl_stream_next_token_on_same_line(s);
933 if (tok) {
934 isl_stream_error(s, tok, "unexpected extra token on line");
935 isl_stream_push_token(s, tok);
936 goto error;
937 }
938
939 bmap = isl_basic_map_simplify(bmap);
940 bmap = isl_basic_map_finalize(bmap);
941 return bmap;
942 error:
943 isl_basic_map_free(bmap);
944 return NULL;
945 }
946
947 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
948 {
949 struct isl_token *tok;
950 struct isl_token *tok2;
951 int i, n;
952 struct isl_map *map;
953
954 tok = isl_stream_next_token(s);
955 if (!tok) {
956 isl_stream_error(s, NULL, "unexpected EOF");
957 return NULL;
958 }
959 tok2 = isl_stream_next_token_on_same_line(s);
960 if (tok2) {
961 isl_stream_push_token(s, tok2);
962 isl_stream_push_token(s, tok);
963 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
964 }
965 n = isl_int_get_si(tok->u.v);
966 isl_token_free(tok);
967
968 isl_assert(s->ctx, n >= 1, return NULL);
969
970 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
971
972 for (i = 1; i < n; ++i)
973 map = isl_map_union(map,
974 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
975
976 return map;
977 }
978
979 static int optional_power(struct isl_stream *s)
980 {
981 int pow;
982 struct isl_token *tok;
983
984 tok = isl_stream_next_token(s);
985 if (!tok)
986 return 1;
987 if (tok->type != '^') {
988 isl_stream_push_token(s, tok);
989 return 1;
990 }
991 isl_token_free(tok);
992 tok = isl_stream_next_token(s);
993 if (!tok || tok->type != ISL_TOKEN_VALUE) {
994 isl_stream_error(s, tok, "expecting exponent");
995 if (tok)
996 isl_stream_push_token(s, tok);
997 return 1;
998 }
999 pow = isl_int_get_si(tok->u.v);
1000 isl_token_free(tok);
1001 return pow;
1002 }
1003
1004 static __isl_give isl_div *read_div(struct isl_stream *s,
1005 __isl_keep isl_basic_map *bmap, struct vars *v)
1006 {
1007 unsigned total = isl_basic_map_total_dim(bmap);
1008 int k;
1009
1010 bmap = isl_basic_map_copy(bmap);
1011 bmap = isl_basic_map_cow(bmap);
1012 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
1013 1, 0, 2);
1014
1015 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
1016 goto error;
1017 isl_seq_clr(bmap->div[k], 1 + 1 + total);
1018 bmap = add_div_definition(s, v, bmap, k);
1019
1020 return isl_basic_map_div(bmap, k);
1021 error:
1022 isl_basic_map_free(bmap);
1023 return NULL;
1024 }
1025
1026 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1027 __isl_keep isl_basic_map *bmap, struct vars *v);
1028
1029 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1030 __isl_keep isl_basic_map *bmap, struct vars *v)
1031 {
1032 struct isl_qpolynomial *qp;
1033 struct isl_token *tok;
1034
1035 tok = isl_stream_next_token(s);
1036 if (!tok) {
1037 isl_stream_error(s, NULL, "unexpected EOF");
1038 return NULL;
1039 }
1040 if (tok->type == '(') {
1041 isl_token_free(tok);
1042 qp = read_term(s, bmap, v);
1043 if (!qp)
1044 return NULL;
1045 if (isl_stream_eat(s, ')'))
1046 goto error;
1047 } else if (tok->type == ISL_TOKEN_VALUE) {
1048 struct isl_token *tok2;
1049 tok2 = isl_stream_next_token(s);
1050 if (tok2 && tok2->type == '/') {
1051 isl_token_free(tok2);
1052 tok2 = isl_stream_next_token(s);
1053 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1054 isl_stream_error(s, tok2, "expected denominator");
1055 isl_token_free(tok);
1056 isl_token_free(tok2);
1057 return NULL;
1058 }
1059 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1060 tok->u.v, tok2->u.v);
1061 isl_token_free(tok2);
1062 } else {
1063 isl_stream_push_token(s, tok2);
1064 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1065 tok->u.v);
1066 }
1067 isl_token_free(tok);
1068 } else if (tok->type == ISL_TOKEN_INFTY) {
1069 isl_token_free(tok);
1070 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1071 } else if (tok->type == ISL_TOKEN_NAN) {
1072 isl_token_free(tok);
1073 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1074 } else if (tok->type == ISL_TOKEN_IDENT) {
1075 int n = v->n;
1076 int pos = vars_pos(v, tok->u.s, -1);
1077 int pow;
1078 isl_token_free(tok);
1079 if (pos < 0)
1080 goto error;
1081 if (pos >= n) {
1082 isl_stream_error(s, tok, "unknown identifier");
1083 return NULL;
1084 }
1085 pow = optional_power(s);
1086 qp = isl_qpolynomial_pow(isl_basic_map_get_dim(bmap), pos, pow);
1087 } else if (tok->type == '[') {
1088 isl_div *div;
1089 int pow;
1090
1091 isl_stream_push_token(s, tok);
1092 div = read_div(s, bmap, v);
1093 pow = optional_power(s);
1094 qp = isl_qpolynomial_div_pow(div, pow);
1095 } else if (tok->type == '-') {
1096 struct isl_qpolynomial *qp2;
1097
1098 isl_token_free(tok);
1099 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1100 s->ctx->negone);
1101 qp2 = read_factor(s, bmap, v);
1102 qp = isl_qpolynomial_mul(qp, qp2);
1103 } else {
1104 isl_stream_error(s, tok, "unexpected isl_token");
1105 isl_stream_push_token(s, tok);
1106 return NULL;
1107 }
1108
1109 if (isl_stream_eat_if_available(s, '*') ||
1110 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1111 struct isl_qpolynomial *qp2;
1112
1113 qp2 = read_factor(s, bmap, v);
1114 qp = isl_qpolynomial_mul(qp, qp2);
1115 }
1116
1117 return qp;
1118 error:
1119 isl_qpolynomial_free(qp);
1120 return NULL;
1121 }
1122
1123 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1124 __isl_keep isl_basic_map *bmap, struct vars *v)
1125 {
1126 struct isl_token *tok;
1127 struct isl_qpolynomial *qp;
1128
1129 qp = read_factor(s, bmap, v);
1130
1131 for (;;) {
1132 tok = isl_stream_next_token(s);
1133 if (!tok)
1134 return qp;
1135
1136 if (tok->type == '+') {
1137 struct isl_qpolynomial *qp2;
1138
1139 isl_token_free(tok);
1140 qp2 = read_factor(s, bmap, v);
1141 qp = isl_qpolynomial_add(qp, qp2);
1142 } else if (tok->type == '-') {
1143 struct isl_qpolynomial *qp2;
1144
1145 isl_token_free(tok);
1146 qp2 = read_factor(s, bmap, v);
1147 qp = isl_qpolynomial_sub(qp, qp2);
1148 } else if (tok->type == ISL_TOKEN_VALUE &&
1149 isl_int_is_neg(tok->u.v)) {
1150 struct isl_qpolynomial *qp2;
1151
1152 qp2 = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1153 tok->u.v);
1154 isl_token_free(tok);
1155 qp = isl_qpolynomial_add(qp, qp2);
1156 } else {
1157 isl_stream_push_token(s, tok);
1158 break;
1159 }
1160 }
1161
1162 return qp;
1163 }
1164
1165 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1166 __isl_take isl_basic_map *bmap, struct vars *v)
1167 {
1168 struct isl_token *tok;
1169 struct isl_map *map;
1170
1171 tok = isl_stream_next_token(s);
1172 if (!tok) {
1173 isl_stream_error(s, NULL, "unexpected EOF");
1174 goto error;
1175 }
1176 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1177 if (tok->type == ':') {
1178 isl_token_free(tok);
1179 map = isl_map_intersect(map,
1180 read_disjuncts(s, v, isl_basic_map_get_dim(bmap)));
1181 } else
1182 isl_stream_push_token(s, tok);
1183
1184 isl_basic_map_free(bmap);
1185
1186 return map;
1187 error:
1188 isl_basic_map_free(bmap);
1189 return NULL;
1190 }
1191
1192 static struct isl_obj obj_read_poly(struct isl_stream *s,
1193 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1194 {
1195 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1196 struct isl_pw_qpolynomial *pwqp;
1197 struct isl_qpolynomial *qp;
1198 struct isl_map *map;
1199 struct isl_set *set;
1200
1201 bmap = isl_basic_map_reverse(bmap);
1202
1203 qp = read_term(s, bmap, v);
1204 map = read_optional_disjuncts(s, bmap, v);
1205 set = isl_set_from_map(map);
1206
1207 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1208
1209 vars_drop(v, v->n - n);
1210
1211 obj.v = pwqp;
1212 return obj;
1213 }
1214
1215 static struct isl_obj obj_read_body(struct isl_stream *s,
1216 __isl_take isl_basic_map *bmap, struct vars *v, isl_obj_type type)
1217 {
1218 struct isl_map *map = NULL;
1219 struct isl_token *tok;
1220 struct isl_obj obj = { type, NULL };
1221 int n = v->n;
1222
1223 if (!isl_stream_next_token_is(s, '['))
1224 return obj_read_poly(s, bmap, v, n);
1225
1226 bmap = read_tuple(s, bmap, isl_dim_in, v);
1227 if (!bmap)
1228 goto error;
1229 tok = isl_stream_next_token(s);
1230 if (tok && tok->type == ISL_TOKEN_TO) {
1231 obj.type = isl_obj_map;
1232 isl_token_free(tok);
1233 tok = isl_stream_next_token(s);
1234 if (tok && tok->type != '[') {
1235 isl_stream_push_token(s, tok);
1236 return obj_read_poly(s, bmap, v, n);
1237 }
1238 isl_stream_push_token(s, tok);
1239 bmap = read_tuple(s, bmap, isl_dim_out, v);
1240 if (!bmap)
1241 goto error;
1242 } else {
1243 bmap = isl_basic_map_reverse(bmap);
1244 if (tok)
1245 isl_stream_push_token(s, tok);
1246 }
1247
1248 map = read_optional_disjuncts(s, bmap, v);
1249
1250 vars_drop(v, v->n - n);
1251
1252 obj.v = map;
1253 return obj;
1254 error:
1255 isl_basic_map_free(bmap);
1256 obj.type = isl_obj_none;
1257 return obj;
1258 }
1259
1260 static struct isl_obj obj_add(struct isl_ctx *ctx,
1261 struct isl_obj obj1, struct isl_obj obj2)
1262 {
1263 isl_assert(ctx, obj1.type == obj2.type, goto error);
1264 obj1.v = obj1.type->add(obj1.v, obj2.v);
1265 return obj1;
1266 error:
1267 obj1.type->free(obj1.v);
1268 obj2.type->free(obj2.v);
1269 obj1.type = isl_obj_none;
1270 obj1.v = NULL;
1271 return obj1;
1272 }
1273
1274 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1275 {
1276 struct isl_basic_map *bmap = NULL;
1277 struct isl_token *tok;
1278 struct vars *v = NULL;
1279 struct isl_obj obj = { isl_obj_set, NULL };
1280
1281 tok = isl_stream_next_token(s);
1282 if (!tok) {
1283 isl_stream_error(s, NULL, "unexpected EOF");
1284 goto error;
1285 }
1286 if (tok->type == ISL_TOKEN_VALUE) {
1287 struct isl_map *map;
1288 isl_stream_push_token(s, tok);
1289 map = map_read_polylib(s, nparam);
1290 if (!map)
1291 goto error;
1292 if (isl_map_dim(map, isl_dim_in) > 0)
1293 obj.type = isl_obj_map;
1294 obj.v = map;
1295 return obj;
1296 }
1297 v = vars_new(s->ctx);
1298 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
1299 if (tok->type == '[') {
1300 isl_stream_push_token(s, tok);
1301 bmap = read_tuple(s, bmap, isl_dim_param, v);
1302 if (!bmap)
1303 goto error;
1304 if (nparam >= 0)
1305 isl_assert(s->ctx, nparam == v->n, goto error);
1306 tok = isl_stream_next_token(s);
1307 if (!tok || tok->type != ISL_TOKEN_TO) {
1308 isl_stream_error(s, tok, "expecting '->'");
1309 if (tok)
1310 isl_stream_push_token(s, tok);
1311 goto error;
1312 }
1313 isl_token_free(tok);
1314 tok = isl_stream_next_token(s);
1315 } else if (nparam > 0)
1316 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
1317 if (!tok || tok->type != '{') {
1318 isl_stream_error(s, tok, "expecting '{'");
1319 if (tok)
1320 isl_stream_push_token(s, tok);
1321 goto error;
1322 }
1323 isl_token_free(tok);
1324
1325 tok = isl_stream_next_token(s);
1326 if (!tok)
1327 ;
1328 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1329 isl_token_free(tok);
1330 if (isl_stream_eat(s, '='))
1331 goto error;
1332 bmap = read_tuple(s, bmap, isl_dim_param, v);
1333 if (!bmap)
1334 goto error;
1335 if (nparam >= 0)
1336 isl_assert(s->ctx, nparam == v->n, goto error);
1337 } else
1338 isl_stream_push_token(s, tok);
1339
1340 for (;;) {
1341 struct isl_obj o;
1342 tok = NULL;
1343 o = obj_read_body(s, isl_basic_map_copy(bmap), v, obj.type);
1344 if (o.type == isl_obj_none)
1345 break;
1346 if (!obj.v)
1347 obj = o;
1348 else {
1349 obj = obj_add(s->ctx, obj, o);
1350 if (obj.type == isl_obj_none)
1351 break;
1352 }
1353 tok = isl_stream_next_token(s);
1354 if (!tok || tok->type != ';')
1355 break;
1356 isl_token_free(tok);
1357 }
1358
1359 if (tok && tok->type == '}') {
1360 isl_token_free(tok);
1361 } else {
1362 isl_stream_error(s, tok, "unexpected isl_token");
1363 if (tok)
1364 isl_token_free(tok);
1365 goto error;
1366 }
1367 vars_free(v);
1368 isl_basic_map_free(bmap);
1369
1370 return obj;
1371 error:
1372 isl_basic_map_free(bmap);
1373 obj.type->free(obj.v);
1374 if (v)
1375 vars_free(v);
1376 obj.v = NULL;
1377 return obj;
1378 }
1379
1380 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1381 {
1382 return obj_read(s, -1);
1383 }
1384
1385 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
1386 {
1387 struct isl_obj obj;
1388 struct isl_map *map;
1389
1390 obj = obj_read(s, nparam);
1391 if (obj.v)
1392 isl_assert(s->ctx, obj.type == isl_obj_map ||
1393 obj.type == isl_obj_set, goto error);
1394
1395 return obj.v;
1396 error:
1397 obj.type->free(obj.v);
1398 return NULL;
1399 }
1400
1401 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
1402 {
1403 struct isl_obj obj;
1404 struct isl_set *set;
1405
1406 obj = obj_read(s, nparam);
1407 if (obj.v)
1408 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
1409
1410 return obj.v;
1411 error:
1412 obj.type->free(obj.v);
1413 return NULL;
1414 }
1415
1416 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
1417 {
1418 struct isl_obj obj;
1419 struct isl_map *map;
1420 struct isl_basic_map *bmap;
1421
1422 obj = obj_read(s, nparam);
1423 map = obj.v;
1424 if (!map)
1425 return NULL;
1426
1427 isl_assert(map->ctx, map->n <= 1, goto error);
1428
1429 if (map->n == 0)
1430 bmap = isl_basic_map_empty_like_map(map);
1431 else
1432 bmap = isl_basic_map_copy(map->p[0]);
1433
1434 isl_map_free(map);
1435
1436 return bmap;
1437 error:
1438 isl_map_free(map);
1439 return NULL;
1440 }
1441
1442 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
1443 FILE *input, int nparam)
1444 {
1445 struct isl_basic_map *bmap;
1446 struct isl_stream *s = isl_stream_new_file(ctx, input);
1447 if (!s)
1448 return NULL;
1449 bmap = basic_map_read(s, nparam);
1450 isl_stream_free(s);
1451 return bmap;
1452 }
1453
1454 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
1455 FILE *input, int nparam)
1456 {
1457 struct isl_basic_map *bmap;
1458 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
1459 if (!bmap)
1460 return NULL;
1461 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1462 return (struct isl_basic_set *)bmap;
1463 error:
1464 isl_basic_map_free(bmap);
1465 return NULL;
1466 }
1467
1468 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
1469 const char *str, int nparam)
1470 {
1471 struct isl_basic_map *bmap;
1472 struct isl_stream *s = isl_stream_new_str(ctx, str);
1473 if (!s)
1474 return NULL;
1475 bmap = basic_map_read(s, nparam);
1476 isl_stream_free(s);
1477 return bmap;
1478 }
1479
1480 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
1481 const char *str, int nparam)
1482 {
1483 struct isl_basic_map *bmap;
1484 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
1485 if (!bmap)
1486 return NULL;
1487 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1488 return (struct isl_basic_set *)bmap;
1489 error:
1490 isl_basic_map_free(bmap);
1491 return NULL;
1492 }
1493
1494 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
1495 FILE *input, int nparam)
1496 {
1497 struct isl_map *map;
1498 struct isl_stream *s = isl_stream_new_file(ctx, input);
1499 if (!s)
1500 return NULL;
1501 map = isl_stream_read_map(s, nparam);
1502 isl_stream_free(s);
1503 return map;
1504 }
1505
1506 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
1507 const char *str, int nparam)
1508 {
1509 struct isl_map *map;
1510 struct isl_stream *s = isl_stream_new_str(ctx, str);
1511 if (!s)
1512 return NULL;
1513 map = isl_stream_read_map(s, nparam);
1514 isl_stream_free(s);
1515 return map;
1516 }
1517
1518 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
1519 FILE *input, int nparam)
1520 {
1521 struct isl_map *map;
1522 map = isl_map_read_from_file(ctx, input, nparam);
1523 if (!map)
1524 return NULL;
1525 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
1526 return (struct isl_set *)map;
1527 error:
1528 isl_map_free(map);
1529 return NULL;
1530 }
1531
1532 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
1533 const char *str, int nparam)
1534 {
1535 struct isl_map *map;
1536 map = isl_map_read_from_str(ctx, str, nparam);
1537 if (!map)
1538 return NULL;
1539 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
1540 return (struct isl_set *)map;
1541 error:
1542 isl_map_free(map);
1543 return NULL;
1544 }
1545
1546 static char *next_line(FILE *input, char *line, unsigned len)
1547 {
1548 char *p;
1549
1550 do {
1551 if (!(p = fgets(line, len, input)))
1552 return NULL;
1553 while (isspace(*p) && *p != '\n')
1554 ++p;
1555 } while (*p == '#' || *p == '\n');
1556
1557 return p;
1558 }
1559
1560 static struct isl_vec *isl_vec_read_from_file_polylib(struct isl_ctx *ctx,
1561 FILE *input)
1562 {
1563 struct isl_vec *vec = NULL;
1564 char line[1024];
1565 char val[1024];
1566 char *p;
1567 unsigned size;
1568 int j;
1569 int n;
1570 int offset;
1571
1572 isl_assert(ctx, next_line(input, line, sizeof(line)), return NULL);
1573 isl_assert(ctx, sscanf(line, "%u", &size) == 1, return NULL);
1574
1575 vec = isl_vec_alloc(ctx, size);
1576
1577 p = next_line(input, line, sizeof(line));
1578 isl_assert(ctx, p, goto error);
1579
1580 for (j = 0; j < size; ++j) {
1581 n = sscanf(p, "%s%n", val, &offset);
1582 isl_assert(ctx, n != 0, goto error);
1583 isl_int_read(vec->el[j], val);
1584 p += offset;
1585 }
1586
1587 return vec;
1588 error:
1589 isl_vec_free(vec);
1590 return NULL;
1591 }
1592
1593 struct isl_vec *isl_vec_read_from_file(struct isl_ctx *ctx,
1594 FILE *input, unsigned input_format)
1595 {
1596 if (input_format == ISL_FORMAT_POLYLIB)
1597 return isl_vec_read_from_file_polylib(ctx, input);
1598 else
1599 isl_assert(ctx, 0, return NULL);
1600 }
1601
1602 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
1603 struct isl_stream *s)
1604 {
1605 struct isl_obj obj;
1606 struct isl_pw_qpolynomial *pwqp;
1607
1608 obj = obj_read(s, -1);
1609 if (obj.v)
1610 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
1611 goto error);
1612
1613 return obj.v;
1614 error:
1615 obj.type->free(obj.v);
1616 return NULL;
1617 }
Integer set library