?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
isl_stream_read_obj: read reductions
[isl.git] / isl_input.c
blob075ad8d2c20a970a6914572ccfcfd2f0a0305708
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 #include <isl_union_map.h>
25
26 struct variable {
27 char *name;
28 int pos;
29 struct variable *next;
30 };
31
32 struct vars {
33 struct isl_ctx *ctx;
34 int n;
35 struct variable *v;
36 };
37
38 static struct vars *vars_new(struct isl_ctx *ctx)
39 {
40 struct vars *v;
41 v = isl_alloc_type(ctx, struct vars);
42 if (!v)
43 return NULL;
44 v->ctx = ctx;
45 v->n = 0;
46 v->v = NULL;
47 return v;
48 }
49
50 static void variable_free(struct variable *var)
51 {
52 while (var) {
53 struct variable *next = var->next;
54 free(var->name);
55 free(var);
56 var = next;
57 }
58 }
59
60 static void vars_free(struct vars *v)
61 {
62 if (!v)
63 return;
64 variable_free(v->v);
65 free(v);
66 }
67
68 static void vars_drop(struct vars *v, int n)
69 {
70 struct variable *var;
71
72 if (!v || !v->v)
73 return;
74
75 v->n -= n;
76
77 var = v->v;
78 while (--n >= 0) {
79 struct variable *next = var->next;
80 free(var->name);
81 free(var);
82 var = next;
83 }
84 v->v = var;
85 }
86
87 static struct variable *variable_new(struct vars *v, const char *name, int len,
88 int pos)
89 {
90 struct variable *var;
91 var = isl_alloc_type(v->ctx, struct variable);
92 if (!var)
93 goto error;
94 var->name = strdup(name);
95 var->name[len] = '\0';
96 var->pos = pos;
97 var->next = v->v;
98 return var;
99 error:
100 variable_free(v->v);
101 return NULL;
102 }
103
104 static int vars_pos(struct vars *v, const char *s, int len)
105 {
106 int pos;
107 struct variable *q;
108
109 if (len == -1)
110 len = strlen(s);
111 for (q = v->v; q; q = q->next) {
112 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
113 break;
114 }
115 if (q)
116 pos = q->pos;
117 else {
118 pos = v->n;
119 v->v = variable_new(v, s, len, v->n);
120 if (!v->v)
121 return -1;
122 v->n++;
123 }
124 return pos;
125 }
126
127 static __isl_give isl_dim *set_name(__isl_take isl_dim *dim,
128 enum isl_dim_type type, unsigned pos, char *name)
129 {
130 char *prime;
131
132 if (!dim)
133 return NULL;
134 if (!name)
135 return dim;
136
137 prime = strchr(name, '\'');
138 if (prime)
139 *prime = '\0';
140 dim = isl_dim_set_name(dim, type, pos, name);
141 if (prime)
142 *prime = '\'';
143
144 return dim;
145 }
146
147 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
148 {
149 struct isl_token *tok;
150
151 tok = isl_stream_next_token(s);
152 if (!tok || tok->type != ISL_TOKEN_VALUE) {
153 isl_stream_error(s, tok, "expecting constant value");
154 goto error;
155 }
156
157 isl_int_mul(*f, *f, tok->u.v);
158
159 isl_token_free(tok);
160
161 if (isl_stream_eat_if_available(s, '*'))
162 return accept_cst_factor(s, f);
163
164 return 0;
165 error:
166 isl_token_free(tok);
167 return -1;
168 }
169
170 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v);
171
172 static __isl_give isl_vec *accept_affine_factor(struct isl_stream *s,
173 struct vars *v)
174 {
175 struct isl_token *tok = NULL;
176 isl_vec *aff = NULL;
177
178 tok = isl_stream_next_token(s);
179 if (!tok) {
180 isl_stream_error(s, NULL, "unexpected EOF");
181 goto error;
182 }
183 if (tok->type == ISL_TOKEN_IDENT) {
184 int n = v->n;
185 int pos = vars_pos(v, tok->u.s, -1);
186 if (pos < 0)
187 goto error;
188 if (pos >= n) {
189 isl_stream_error(s, tok, "unknown identifier");
190 goto error;
191 }
192
193 aff = isl_vec_alloc(v->ctx, 1 + v->n);
194 if (!aff)
195 goto error;
196 isl_seq_clr(aff->el, aff->size);
197 isl_int_set_si(aff->el[1 + pos], 1);
198 isl_token_free(tok);
199 } else if (tok->type == ISL_TOKEN_VALUE) {
200 if (isl_stream_eat_if_available(s, '*')) {
201 aff = accept_affine_factor(s, v);
202 aff = isl_vec_scale(aff, tok->u.v);
203 } else {
204 aff = isl_vec_alloc(v->ctx, 1 + v->n);
205 if (!aff)
206 goto error;
207 isl_seq_clr(aff->el, aff->size);
208 isl_int_set(aff->el[0], tok->u.v);
209 }
210 isl_token_free(tok);
211 } else if (tok->type == '(') {
212 isl_token_free(tok);
213 tok = NULL;
214 aff = accept_affine(s, v);
215 if (!aff)
216 goto error;
217 if (isl_stream_eat(s, ')'))
218 goto error;
219 } else {
220 isl_stream_error(s, tok, "expecting factor");
221 goto error;
222 }
223 if (isl_stream_eat_if_available(s, '*')) {
224 isl_int f;
225 isl_int_init(f);
226 isl_int_set_si(f, 1);
227 if (accept_cst_factor(s, &f) < 0) {
228 isl_int_clear(f);
229 goto error;
230 }
231 aff = isl_vec_scale(aff, f);
232 isl_int_clear(f);
233 }
234
235 return aff;
236 error:
237 isl_token_free(tok);
238 isl_vec_free(aff);
239 return NULL;
240 }
241
242 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
243 {
244 struct isl_token *tok = NULL;
245 struct isl_vec *aff;
246 int sign = 1;
247
248 aff = isl_vec_alloc(v->ctx, 1 + v->n);
249 if (!aff)
250 return NULL;
251 isl_seq_clr(aff->el, aff->size);
252
253 for (;;) {
254 tok = isl_stream_next_token(s);
255 if (!tok) {
256 isl_stream_error(s, NULL, "unexpected EOF");
257 goto error;
258 }
259 if (tok->type == '-') {
260 sign = -sign;
261 isl_token_free(tok);
262 continue;
263 }
264 if (tok->type == '(' || tok->type == ISL_TOKEN_IDENT) {
265 isl_vec *aff2;
266 isl_stream_push_token(s, tok);
267 tok = NULL;
268 aff2 = accept_affine_factor(s, v);
269 if (sign < 0)
270 aff2 = isl_vec_scale(aff2, s->ctx->negone);
271 aff = isl_vec_add(aff, aff2);
272 if (!aff)
273 goto error;
274 sign = 1;
275 } else if (tok->type == ISL_TOKEN_VALUE) {
276 if (sign < 0)
277 isl_int_neg(tok->u.v, tok->u.v);
278 if (isl_stream_eat_if_available(s, '*') ||
279 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
280 isl_vec *aff2;
281 aff2 = accept_affine_factor(s, v);
282 aff2 = isl_vec_scale(aff2, tok->u.v);
283 aff = isl_vec_add(aff, aff2);
284 if (!aff)
285 goto error;
286 } else {
287 isl_int_add(aff->el[0], aff->el[0], tok->u.v);
288 }
289 sign = 1;
290 }
291 isl_token_free(tok);
292
293 tok = isl_stream_next_token(s);
294 if (tok && tok->type == '-') {
295 sign = -sign;
296 isl_token_free(tok);
297 } else if (tok && tok->type == '+') {
298 /* nothing */
299 isl_token_free(tok);
300 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
301 isl_int_is_neg(tok->u.v)) {
302 isl_stream_push_token(s, tok);
303 } else {
304 if (tok)
305 isl_stream_push_token(s, tok);
306 break;
307 }
308 }
309
310 return aff;
311 error:
312 isl_token_free(tok);
313 isl_vec_free(aff);
314 return NULL;
315 }
316
317 static __isl_give isl_mat *read_var_def(struct isl_stream *s,
318 __isl_take isl_mat *eq, enum isl_dim_type type, struct vars *v)
319 {
320 struct isl_vec *vec;
321
322 vec = accept_affine(s, v);
323 if (!vec)
324 goto error;
325 v->v = variable_new(v, "", 0, v->n);
326 if (!v->v)
327 goto error;
328 v->n++;
329 eq = isl_mat_add_rows(eq, 1);
330 if (eq) {
331 isl_seq_cpy(eq->row[eq->n_row - 1], vec->el, vec->size);
332 isl_int_set_si(eq->row[eq->n_row - 1][vec->size], -1);
333 }
334 isl_vec_free(vec);
335
336 return eq;
337 error:
338 isl_mat_free(eq);
339 return NULL;
340 }
341
342 static __isl_give isl_dim *read_var_list(struct isl_stream *s,
343 __isl_take isl_dim *dim, enum isl_dim_type type, struct vars *v,
344 __isl_keep isl_mat **eq)
345 {
346 int i = 0;
347 struct isl_token *tok;
348
349 while ((tok = isl_stream_next_token(s)) != NULL) {
350 int new_name = 0;
351
352 if (tok->type == ISL_TOKEN_IDENT) {
353 int n = v->n;
354 int p = vars_pos(v, tok->u.s, -1);
355 if (p < 0)
356 goto error;
357 new_name = p >= n;
358 }
359
360 if (new_name) {
361 dim = isl_dim_add(dim, type, 1);
362 if (eq)
363 *eq = isl_mat_add_zero_cols(*eq, 1);
364 dim = set_name(dim, type, i, v->v->name);
365 isl_token_free(tok);
366 } else if (tok->type == ISL_TOKEN_IDENT ||
367 tok->type == ISL_TOKEN_VALUE) {
368 if (type == isl_dim_param) {
369 isl_stream_error(s, tok,
370 "expecting unique identifier");
371 goto error;
372 }
373 isl_stream_push_token(s, tok);
374 tok = NULL;
375 dim = isl_dim_add(dim, type, 1);
376 *eq = isl_mat_add_zero_cols(*eq, 1);
377 *eq = read_var_def(s, *eq, type, v);
378 } else
379 break;
380
381 tok = isl_stream_next_token(s);
382 if (!tok || tok->type != ',')
383 break;
384
385 isl_token_free(tok);
386 i++;
387 }
388 if (tok)
389 isl_stream_push_token(s, tok);
390
391 return dim;
392 error:
393 isl_token_free(tok);
394 isl_dim_free(dim);
395 return NULL;
396 }
397
398 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
399 struct vars *v)
400 {
401 struct isl_vec *vec;
402 struct isl_mat *mat;
403 struct isl_token *tok = NULL;
404
405 vec = accept_affine(s, v);
406 mat = isl_mat_from_row_vec(vec);
407 if (!mat)
408 return NULL;
409
410 for (;;) {
411 tok = isl_stream_next_token(s);
412 if (!tok) {
413 isl_stream_error(s, NULL, "unexpected EOF");
414 goto error;
415 }
416 if (tok->type != ',') {
417 isl_stream_push_token(s, tok);
418 break;
419 }
420 isl_token_free(tok);
421
422 vec = accept_affine(s, v);
423 mat = isl_mat_vec_concat(mat, vec);
424 if (!mat)
425 return NULL;
426 }
427
428 return mat;
429 error:
430 isl_mat_free(mat);
431 return NULL;
432 }
433
434 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
435 struct vars *v, struct isl_basic_map *bmap, int k)
436 {
437 struct isl_token *tok;
438 int seen_paren = 0;
439 struct isl_vec *aff;
440
441 if (isl_stream_eat(s, '['))
442 goto error;
443
444 tok = isl_stream_next_token(s);
445 if (!tok)
446 goto error;
447 if (tok->type == '(') {
448 seen_paren = 1;
449 isl_token_free(tok);
450 } else
451 isl_stream_push_token(s, tok);
452
453 aff = accept_affine(s, v);
454 if (!aff)
455 goto error;
456
457 isl_seq_cpy(bmap->div[k] + 1, aff->el, aff->size);
458
459 isl_vec_free(aff);
460
461 if (seen_paren && isl_stream_eat(s, ')'))
462 goto error;
463 if (isl_stream_eat(s, '/'))
464 goto error;
465
466 tok = isl_stream_next_token(s);
467 if (!tok)
468 goto error;
469 if (tok->type != ISL_TOKEN_VALUE) {
470 isl_stream_error(s, tok, "expected denominator");
471 isl_stream_push_token(s, tok);
472 goto error;
473 }
474 isl_int_set(bmap->div[k][0], tok->u.v);
475 isl_token_free(tok);
476
477 if (isl_stream_eat(s, ']'))
478 goto error;
479
480 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
481 goto error;
482
483 return bmap;
484 error:
485 isl_basic_map_free(bmap);
486 return NULL;
487 }
488
489 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
490 struct vars *v, struct isl_basic_map *bmap)
491 {
492 struct isl_token *tok;
493
494 while ((tok = isl_stream_next_token(s)) != NULL) {
495 int k;
496 int p;
497 int n = v->n;
498 unsigned total = isl_basic_map_total_dim(bmap);
499
500 if (tok->type != ISL_TOKEN_IDENT)
501 break;
502
503 p = vars_pos(v, tok->u.s, -1);
504 if (p < 0)
505 goto error;
506 if (p < n) {
507 isl_stream_error(s, tok, "expecting unique identifier");
508 goto error;
509 }
510
511 bmap = isl_basic_map_cow(bmap);
512 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
513 1, 0, 2);
514
515 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
516 goto error;
517 isl_seq_clr(bmap->div[k], 1 + 1 + total);
518
519 isl_token_free(tok);
520 tok = isl_stream_next_token(s);
521 if (tok && tok->type == '=') {
522 isl_token_free(tok);
523 bmap = add_div_definition(s, v, bmap, k);
524 tok = isl_stream_next_token(s);
525 }
526
527 if (!tok || tok->type != ',')
528 break;
529
530 isl_token_free(tok);
531 }
532 if (tok)
533 isl_stream_push_token(s, tok);
534
535 return bmap;
536 error:
537 isl_token_free(tok);
538 isl_basic_map_free(bmap);
539 return NULL;
540 }
541
542 static int next_is_tuple(struct isl_stream *s)
543 {
544 struct isl_token *tok;
545 int is_tuple;
546
547 tok = isl_stream_next_token(s);
548 if (!tok)
549 return 0;
550 if (tok->type == '[') {
551 isl_stream_push_token(s, tok);
552 return 1;
553 }
554 if (tok->type != ISL_TOKEN_IDENT) {
555 isl_stream_push_token(s, tok);
556 return 0;
557 }
558
559 is_tuple = isl_stream_next_token_is(s, '[');
560
561 isl_stream_push_token(s, tok);
562
563 return is_tuple;
564 }
565
566 static __isl_give isl_dim *read_tuple(struct isl_stream *s,
567 __isl_take isl_dim *dim, enum isl_dim_type type, struct vars *v,
568 __isl_keep isl_mat **eq);
569
570 static __isl_give isl_dim *read_nested_tuple(struct isl_stream *s,
571 __isl_take isl_dim *dim, struct vars *v, __isl_keep isl_mat **eq)
572 {
573 dim = read_tuple(s, dim, isl_dim_in, v, eq);
574 if (isl_stream_eat(s, ISL_TOKEN_TO))
575 goto error;
576 dim = read_tuple(s, dim, isl_dim_out, v, eq);
577 dim = isl_dim_wrap(dim);
578 return dim;
579 error:
580 isl_dim_free(dim);
581 return NULL;
582 }
583
584 static __isl_give isl_dim *read_tuple(struct isl_stream *s,
585 __isl_take isl_dim *dim, enum isl_dim_type type, struct vars *v,
586 __isl_keep isl_mat **eq)
587 {
588 struct isl_token *tok;
589 char *name = NULL;
590
591 tok = isl_stream_next_token(s);
592 if (tok && tok->type == ISL_TOKEN_IDENT) {
593 name = strdup(tok->u.s);
594 if (!name)
595 goto error;
596 isl_token_free(tok);
597 tok = isl_stream_next_token(s);
598 }
599 if (!tok || tok->type != '[') {
600 isl_stream_error(s, tok, "expecting '['");
601 goto error;
602 }
603 isl_token_free(tok);
604 if (type != isl_dim_param && next_is_tuple(s)) {
605 isl_dim *nested = isl_dim_copy(dim);
606 nested = isl_dim_drop(nested, isl_dim_in, 0,
607 isl_dim_size(nested, isl_dim_in));
608 nested = isl_dim_drop(nested, isl_dim_out, 0,
609 isl_dim_size(nested, isl_dim_out));
610 nested = read_nested_tuple(s, nested, v, eq);
611 if (type == isl_dim_in) {
612 isl_dim_free(dim);
613 dim = isl_dim_reverse(nested);
614 } else {
615 dim = isl_dim_join(dim, nested);
616 }
617 } else
618 dim = read_var_list(s, dim, type, v, eq);
619 tok = isl_stream_next_token(s);
620 if (!tok || tok->type != ']') {
621 isl_stream_error(s, tok, "expecting ']'");
622 goto error;
623 }
624 isl_token_free(tok);
625
626 if (name) {
627 dim = isl_dim_set_tuple_name(dim, type, name);
628 free(name);
629 }
630
631 return dim;
632 error:
633 if (tok)
634 isl_token_free(tok);
635 isl_dim_free(dim);
636 return NULL;
637 }
638
639 static struct isl_basic_map *add_constraints(struct isl_stream *s,
640 struct vars *v, struct isl_basic_map *bmap);
641
642 static struct isl_basic_map *add_exists(struct isl_stream *s,
643 struct vars *v, struct isl_basic_map *bmap)
644 {
645 struct isl_token *tok;
646 int n = v->n;
647 int extra;
648 int seen_paren = 0;
649 int i;
650 unsigned total;
651
652 tok = isl_stream_next_token(s);
653 if (!tok)
654 goto error;
655 if (tok->type == '(') {
656 seen_paren = 1;
657 isl_token_free(tok);
658 } else
659 isl_stream_push_token(s, tok);
660
661 bmap = read_defined_var_list(s, v, bmap);
662 if (!bmap)
663 goto error;
664
665 if (isl_stream_eat(s, ':'))
666 goto error;
667 bmap = add_constraints(s, v, bmap);
668 if (seen_paren && isl_stream_eat(s, ')'))
669 goto error;
670 return bmap;
671 error:
672 isl_basic_map_free(bmap);
673 return NULL;
674 }
675
676 static __isl_give isl_basic_map *construct_constraint(
677 __isl_take isl_basic_map *bmap, enum isl_token_type type,
678 isl_int *left, isl_int *right)
679 {
680 int k;
681 unsigned len;
682 struct isl_ctx *ctx;
683
684 if (!bmap)
685 return NULL;
686 len = 1 + isl_basic_map_total_dim(bmap);
687 ctx = bmap->ctx;
688
689 k = isl_basic_map_alloc_inequality(bmap);
690 if (k < 0)
691 goto error;
692 if (type == ISL_TOKEN_LE)
693 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
694 ctx->one, right,
695 len);
696 else if (type == ISL_TOKEN_GE)
697 isl_seq_combine(bmap->ineq[k], ctx->one, left,
698 ctx->negone, right,
699 len);
700 else if (type == ISL_TOKEN_LT) {
701 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
702 ctx->one, right,
703 len);
704 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
705 } else if (type == ISL_TOKEN_GT) {
706 isl_seq_combine(bmap->ineq[k], ctx->one, left,
707 ctx->negone, right,
708 len);
709 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
710 } else {
711 isl_seq_combine(bmap->ineq[k], ctx->one, left,
712 ctx->negone, right,
713 len);
714 isl_basic_map_inequality_to_equality(bmap, k);
715 }
716
717 return bmap;
718 error:
719 isl_basic_map_free(bmap);
720 return NULL;
721 }
722
723 static int is_comparator(struct isl_token *tok)
724 {
725 if (!tok)
726 return 0;
727
728 switch (tok->type) {
729 case ISL_TOKEN_LT:
730 case ISL_TOKEN_GT:
731 case ISL_TOKEN_LE:
732 case ISL_TOKEN_GE:
733 case '=':
734 return 1;
735 default:
736 return 0;
737 }
738 }
739
740 static struct isl_basic_map *add_constraint(struct isl_stream *s,
741 struct vars *v, struct isl_basic_map *bmap)
742 {
743 int i, j;
744 unsigned total = isl_basic_map_total_dim(bmap);
745 struct isl_token *tok = NULL;
746 struct isl_mat *aff1 = NULL, *aff2 = NULL;
747
748 tok = isl_stream_next_token(s);
749 if (!tok)
750 goto error;
751 if (tok->type == ISL_TOKEN_EXISTS) {
752 isl_token_free(tok);
753 return add_exists(s, v, bmap);
754 }
755 isl_stream_push_token(s, tok);
756 tok = NULL;
757
758 bmap = isl_basic_map_cow(bmap);
759
760 aff1 = accept_affine_list(s, v);
761 if (!aff1)
762 goto error;
763 tok = isl_stream_next_token(s);
764 if (!is_comparator(tok)) {
765 isl_stream_error(s, tok, "missing operator");
766 if (tok)
767 isl_stream_push_token(s, tok);
768 tok = NULL;
769 goto error;
770 }
771 isl_assert(aff1->ctx, aff1->n_col == 1 + total, goto error);
772 for (;;) {
773 aff2 = accept_affine_list(s, v);
774 if (!aff2)
775 goto error;
776 isl_assert(aff2->ctx, aff2->n_col == 1 + total, goto error);
777
778 bmap = isl_basic_map_extend_constraints(bmap, 0,
779 aff1->n_row * aff2->n_row);
780 for (i = 0; i < aff1->n_row; ++i)
781 for (j = 0; j < aff2->n_row; ++j)
782 bmap = construct_constraint(bmap, tok->type,
783 aff1->row[i], aff2->row[j]);
784 isl_token_free(tok);
785 isl_mat_free(aff1);
786 aff1 = aff2;
787
788 tok = isl_stream_next_token(s);
789 if (!is_comparator(tok)) {
790 if (tok)
791 isl_stream_push_token(s, tok);
792 break;
793 }
794 }
795 isl_mat_free(aff1);
796
797 return bmap;
798 error:
799 if (tok)
800 isl_token_free(tok);
801 isl_mat_free(aff1);
802 isl_mat_free(aff2);
803 isl_basic_map_free(bmap);
804 return NULL;
805 }
806
807 static struct isl_basic_map *add_constraints(struct isl_stream *s,
808 struct vars *v, struct isl_basic_map *bmap)
809 {
810 struct isl_token *tok;
811
812 for (;;) {
813 bmap = add_constraint(s, v, bmap);
814 if (!bmap)
815 return NULL;
816 tok = isl_stream_next_token(s);
817 if (!tok) {
818 isl_stream_error(s, NULL, "unexpected EOF");
819 goto error;
820 }
821 if (tok->type != ISL_TOKEN_AND)
822 break;
823 isl_token_free(tok);
824 }
825 isl_stream_push_token(s, tok);
826
827 return bmap;
828 error:
829 if (tok)
830 isl_token_free(tok);
831 isl_basic_map_free(bmap);
832 return NULL;
833 }
834
835 static struct isl_basic_map *read_disjunct(struct isl_stream *s,
836 struct vars *v, __isl_take isl_dim *dim)
837 {
838 int seen_paren = 0;
839 struct isl_token *tok;
840 struct isl_basic_map *bmap;
841
842 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
843 if (!bmap)
844 return NULL;
845
846 tok = isl_stream_next_token(s);
847 if (!tok)
848 goto error;
849 if (tok->type == '(') {
850 seen_paren = 1;
851 isl_token_free(tok);
852 } else
853 isl_stream_push_token(s, tok);
854
855 bmap = add_constraints(s, v, bmap);
856 bmap = isl_basic_map_simplify(bmap);
857 bmap = isl_basic_map_finalize(bmap);
858
859 if (seen_paren && isl_stream_eat(s, ')'))
860 goto error;
861
862 return bmap;
863 error:
864 isl_basic_map_free(bmap);
865 return NULL;
866 }
867
868 static struct isl_map *read_disjuncts(struct isl_stream *s,
869 struct vars *v, __isl_take isl_dim *dim)
870 {
871 struct isl_token *tok;
872 struct isl_map *map;
873
874 tok = isl_stream_next_token(s);
875 if (!tok) {
876 isl_stream_error(s, NULL, "unexpected EOF");
877 goto error;
878 }
879 if (tok->type == '}') {
880 isl_stream_push_token(s, tok);
881 return isl_map_universe(dim);
882 }
883 isl_stream_push_token(s, tok);
884
885 map = isl_map_empty(isl_dim_copy(dim));
886 for (;;) {
887 struct isl_basic_map *bmap;
888 int n = v->n;
889
890 bmap = read_disjunct(s, v, isl_dim_copy(dim));
891 map = isl_map_union(map, isl_map_from_basic_map(bmap));
892
893 vars_drop(v, v->n - n);
894
895 tok = isl_stream_next_token(s);
896 if (!tok || tok->type != ISL_TOKEN_OR)
897 break;
898 isl_token_free(tok);
899 }
900 if (tok)
901 isl_stream_push_token(s, tok);
902
903 isl_dim_free(dim);
904 return map;
905 error:
906 isl_dim_free(dim);
907 return NULL;
908 }
909
910 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
911 {
912 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
913 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
914 isl_basic_map_dim(bmap, isl_dim_in) + pos;
915 pos -= isl_basic_map_dim(bmap, isl_dim_out);
916
917 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
918 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
919 pos -= isl_basic_map_dim(bmap, isl_dim_in);
920
921 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
922 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
923 isl_basic_map_dim(bmap, isl_dim_in) +
924 isl_basic_map_dim(bmap, isl_dim_out) + pos;
925 pos -= isl_basic_map_dim(bmap, isl_dim_div);
926
927 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
928 return 1 + pos;
929
930 return 0;
931 }
932
933 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
934 struct isl_stream *s, __isl_take isl_basic_map *bmap)
935 {
936 int j;
937 struct isl_token *tok;
938 int type;
939 int k;
940 isl_int *c;
941 unsigned nparam;
942 unsigned dim;
943
944 if (!bmap)
945 return NULL;
946
947 nparam = isl_basic_map_dim(bmap, isl_dim_param);
948 dim = isl_basic_map_dim(bmap, isl_dim_out);
949
950 tok = isl_stream_next_token(s);
951 if (!tok || tok->type != ISL_TOKEN_VALUE) {
952 isl_stream_error(s, tok, "expecting coefficient");
953 if (tok)
954 isl_stream_push_token(s, tok);
955 goto error;
956 }
957 if (!tok->on_new_line) {
958 isl_stream_error(s, tok, "coefficient should appear on new line");
959 isl_stream_push_token(s, tok);
960 goto error;
961 }
962
963 type = isl_int_get_si(tok->u.v);
964 isl_token_free(tok);
965
966 isl_assert(s->ctx, type == 0 || type == 1, goto error);
967 if (type == 0) {
968 k = isl_basic_map_alloc_equality(bmap);
969 c = bmap->eq[k];
970 } else {
971 k = isl_basic_map_alloc_inequality(bmap);
972 c = bmap->ineq[k];
973 }
974 if (k < 0)
975 goto error;
976
977 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
978 int pos;
979 tok = isl_stream_next_token(s);
980 if (!tok || tok->type != ISL_TOKEN_VALUE) {
981 isl_stream_error(s, tok, "expecting coefficient");
982 if (tok)
983 isl_stream_push_token(s, tok);
984 goto error;
985 }
986 if (tok->on_new_line) {
987 isl_stream_error(s, tok,
988 "coefficient should not appear on new line");
989 isl_stream_push_token(s, tok);
990 goto error;
991 }
992 pos = polylib_pos_to_isl_pos(bmap, j);
993 isl_int_set(c[pos], tok->u.v);
994 isl_token_free(tok);
995 }
996
997 return bmap;
998 error:
999 isl_basic_map_free(bmap);
1000 return NULL;
1001 }
1002
1003 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1004 int nparam)
1005 {
1006 int i;
1007 struct isl_token *tok;
1008 struct isl_token *tok2;
1009 int n_row, n_col;
1010 int on_new_line;
1011 unsigned in = 0, out, local = 0;
1012 struct isl_basic_map *bmap = NULL;
1013
1014 if (nparam < 0)
1015 nparam = 0;
1016
1017 tok = isl_stream_next_token(s);
1018 if (!tok) {
1019 isl_stream_error(s, NULL, "unexpected EOF");
1020 return NULL;
1021 }
1022 tok2 = isl_stream_next_token(s);
1023 if (!tok2) {
1024 isl_token_free(tok);
1025 isl_stream_error(s, NULL, "unexpected EOF");
1026 return NULL;
1027 }
1028 n_row = isl_int_get_si(tok->u.v);
1029 n_col = isl_int_get_si(tok2->u.v);
1030 on_new_line = tok2->on_new_line;
1031 isl_token_free(tok2);
1032 isl_token_free(tok);
1033 isl_assert(s->ctx, !on_new_line, return NULL);
1034 isl_assert(s->ctx, n_row >= 0, return NULL);
1035 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1036 tok = isl_stream_next_token_on_same_line(s);
1037 if (tok) {
1038 if (tok->type != ISL_TOKEN_VALUE) {
1039 isl_stream_error(s, tok,
1040 "expecting number of output dimensions");
1041 isl_stream_push_token(s, tok);
1042 goto error;
1043 }
1044 out = isl_int_get_si(tok->u.v);
1045 isl_token_free(tok);
1046
1047 tok = isl_stream_next_token_on_same_line(s);
1048 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1049 isl_stream_error(s, tok,
1050 "expecting number of input dimensions");
1051 if (tok)
1052 isl_stream_push_token(s, tok);
1053 goto error;
1054 }
1055 in = isl_int_get_si(tok->u.v);
1056 isl_token_free(tok);
1057
1058 tok = isl_stream_next_token_on_same_line(s);
1059 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1060 isl_stream_error(s, tok,
1061 "expecting number of existentials");
1062 if (tok)
1063 isl_stream_push_token(s, tok);
1064 goto error;
1065 }
1066 local = isl_int_get_si(tok->u.v);
1067 isl_token_free(tok);
1068
1069 tok = isl_stream_next_token_on_same_line(s);
1070 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1071 isl_stream_error(s, tok,
1072 "expecting number of parameters");
1073 if (tok)
1074 isl_stream_push_token(s, tok);
1075 goto error;
1076 }
1077 nparam = isl_int_get_si(tok->u.v);
1078 isl_token_free(tok);
1079 if (n_col != 1 + out + in + local + nparam + 1) {
1080 isl_stream_error(s, NULL,
1081 "dimensions don't match");
1082 goto error;
1083 }
1084 } else
1085 out = n_col - 2 - nparam;
1086 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1087 if (!bmap)
1088 return NULL;
1089
1090 for (i = 0; i < local; ++i) {
1091 int k = isl_basic_map_alloc_div(bmap);
1092 if (k < 0)
1093 goto error;
1094 }
1095
1096 for (i = 0; i < n_row; ++i)
1097 bmap = basic_map_read_polylib_constraint(s, bmap);
1098
1099 tok = isl_stream_next_token_on_same_line(s);
1100 if (tok) {
1101 isl_stream_error(s, tok, "unexpected extra token on line");
1102 isl_stream_push_token(s, tok);
1103 goto error;
1104 }
1105
1106 bmap = isl_basic_map_simplify(bmap);
1107 bmap = isl_basic_map_finalize(bmap);
1108 return bmap;
1109 error:
1110 isl_basic_map_free(bmap);
1111 return NULL;
1112 }
1113
1114 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1115 {
1116 struct isl_token *tok;
1117 struct isl_token *tok2;
1118 int i, n;
1119 struct isl_map *map;
1120
1121 tok = isl_stream_next_token(s);
1122 if (!tok) {
1123 isl_stream_error(s, NULL, "unexpected EOF");
1124 return NULL;
1125 }
1126 tok2 = isl_stream_next_token_on_same_line(s);
1127 if (tok2) {
1128 isl_stream_push_token(s, tok2);
1129 isl_stream_push_token(s, tok);
1130 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1131 }
1132 n = isl_int_get_si(tok->u.v);
1133 isl_token_free(tok);
1134
1135 isl_assert(s->ctx, n >= 1, return NULL);
1136
1137 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1138
1139 for (i = 1; i < n; ++i)
1140 map = isl_map_union(map,
1141 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1142
1143 return map;
1144 }
1145
1146 static int optional_power(struct isl_stream *s)
1147 {
1148 int pow;
1149 struct isl_token *tok;
1150
1151 tok = isl_stream_next_token(s);
1152 if (!tok)
1153 return 1;
1154 if (tok->type != '^') {
1155 isl_stream_push_token(s, tok);
1156 return 1;
1157 }
1158 isl_token_free(tok);
1159 tok = isl_stream_next_token(s);
1160 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1161 isl_stream_error(s, tok, "expecting exponent");
1162 if (tok)
1163 isl_stream_push_token(s, tok);
1164 return 1;
1165 }
1166 pow = isl_int_get_si(tok->u.v);
1167 isl_token_free(tok);
1168 return pow;
1169 }
1170
1171 static __isl_give isl_div *read_div(struct isl_stream *s,
1172 __isl_keep isl_basic_map *bmap, struct vars *v)
1173 {
1174 unsigned total = isl_basic_map_total_dim(bmap);
1175 int k;
1176
1177 bmap = isl_basic_map_copy(bmap);
1178 bmap = isl_basic_map_cow(bmap);
1179 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
1180 1, 0, 2);
1181
1182 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
1183 goto error;
1184 isl_seq_clr(bmap->div[k], 1 + 1 + total);
1185 bmap = add_div_definition(s, v, bmap, k);
1186
1187 return isl_basic_map_div(bmap, k);
1188 error:
1189 isl_basic_map_free(bmap);
1190 return NULL;
1191 }
1192
1193 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1194 __isl_keep isl_basic_map *bmap, struct vars *v);
1195
1196 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1197 __isl_keep isl_basic_map *bmap, struct vars *v)
1198 {
1199 struct isl_qpolynomial *qp;
1200 struct isl_token *tok;
1201
1202 tok = isl_stream_next_token(s);
1203 if (!tok) {
1204 isl_stream_error(s, NULL, "unexpected EOF");
1205 return NULL;
1206 }
1207 if (tok->type == '(') {
1208 isl_token_free(tok);
1209 qp = read_term(s, bmap, v);
1210 if (!qp)
1211 return NULL;
1212 if (isl_stream_eat(s, ')'))
1213 goto error;
1214 } else if (tok->type == ISL_TOKEN_VALUE) {
1215 struct isl_token *tok2;
1216 tok2 = isl_stream_next_token(s);
1217 if (tok2 && tok2->type == '/') {
1218 isl_token_free(tok2);
1219 tok2 = isl_stream_next_token(s);
1220 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1221 isl_stream_error(s, tok2, "expected denominator");
1222 isl_token_free(tok);
1223 isl_token_free(tok2);
1224 return NULL;
1225 }
1226 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1227 tok->u.v, tok2->u.v);
1228 isl_token_free(tok2);
1229 } else {
1230 isl_stream_push_token(s, tok2);
1231 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1232 tok->u.v);
1233 }
1234 isl_token_free(tok);
1235 } else if (tok->type == ISL_TOKEN_INFTY) {
1236 isl_token_free(tok);
1237 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1238 } else if (tok->type == ISL_TOKEN_NAN) {
1239 isl_token_free(tok);
1240 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1241 } else if (tok->type == ISL_TOKEN_IDENT) {
1242 int n = v->n;
1243 int pos = vars_pos(v, tok->u.s, -1);
1244 int pow;
1245 if (pos < 0) {
1246 isl_token_free(tok);
1247 return NULL;
1248 }
1249 if (pos >= n) {
1250 isl_stream_error(s, tok, "unknown identifier");
1251 isl_token_free(tok);
1252 return NULL;
1253 }
1254 isl_token_free(tok);
1255 pow = optional_power(s);
1256 qp = isl_qpolynomial_pow(isl_basic_map_get_dim(bmap), pos, pow);
1257 } else if (tok->type == '[') {
1258 isl_div *div;
1259 int pow;
1260
1261 isl_stream_push_token(s, tok);
1262 div = read_div(s, bmap, v);
1263 pow = optional_power(s);
1264 qp = isl_qpolynomial_div_pow(div, pow);
1265 } else if (tok->type == '-') {
1266 struct isl_qpolynomial *qp2;
1267
1268 isl_token_free(tok);
1269 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1270 s->ctx->negone);
1271 qp2 = read_factor(s, bmap, v);
1272 qp = isl_qpolynomial_mul(qp, qp2);
1273 } else {
1274 isl_stream_error(s, tok, "unexpected isl_token");
1275 isl_stream_push_token(s, tok);
1276 return NULL;
1277 }
1278
1279 if (isl_stream_eat_if_available(s, '*') ||
1280 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1281 struct isl_qpolynomial *qp2;
1282
1283 qp2 = read_factor(s, bmap, v);
1284 qp = isl_qpolynomial_mul(qp, qp2);
1285 }
1286
1287 return qp;
1288 error:
1289 isl_qpolynomial_free(qp);
1290 return NULL;
1291 }
1292
1293 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1294 __isl_keep isl_basic_map *bmap, struct vars *v)
1295 {
1296 struct isl_token *tok;
1297 struct isl_qpolynomial *qp;
1298
1299 qp = read_factor(s, bmap, v);
1300
1301 for (;;) {
1302 tok = isl_stream_next_token(s);
1303 if (!tok)
1304 return qp;
1305
1306 if (tok->type == '+') {
1307 struct isl_qpolynomial *qp2;
1308
1309 isl_token_free(tok);
1310 qp2 = read_factor(s, bmap, v);
1311 qp = isl_qpolynomial_add(qp, qp2);
1312 } else if (tok->type == '-') {
1313 struct isl_qpolynomial *qp2;
1314
1315 isl_token_free(tok);
1316 qp2 = read_factor(s, bmap, v);
1317 qp = isl_qpolynomial_sub(qp, qp2);
1318 } else if (tok->type == ISL_TOKEN_VALUE &&
1319 isl_int_is_neg(tok->u.v)) {
1320 struct isl_qpolynomial *qp2;
1321
1322 qp2 = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1323 tok->u.v);
1324 isl_token_free(tok);
1325 qp = isl_qpolynomial_add(qp, qp2);
1326 } else {
1327 isl_stream_push_token(s, tok);
1328 break;
1329 }
1330 }
1331
1332 return qp;
1333 }
1334
1335 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1336 __isl_take isl_basic_map *bmap, struct vars *v)
1337 {
1338 struct isl_token *tok;
1339 struct isl_map *map;
1340
1341 tok = isl_stream_next_token(s);
1342 if (!tok) {
1343 isl_stream_error(s, NULL, "unexpected EOF");
1344 goto error;
1345 }
1346 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1347 if (tok->type == ':') {
1348 isl_token_free(tok);
1349 map = isl_map_intersect(map,
1350 read_disjuncts(s, v, isl_basic_map_get_dim(bmap)));
1351 } else
1352 isl_stream_push_token(s, tok);
1353
1354 isl_basic_map_free(bmap);
1355
1356 return map;
1357 error:
1358 isl_basic_map_free(bmap);
1359 return NULL;
1360 }
1361
1362 static struct isl_obj obj_read_poly(struct isl_stream *s,
1363 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1364 {
1365 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1366 struct isl_pw_qpolynomial *pwqp;
1367 struct isl_qpolynomial *qp;
1368 struct isl_map *map;
1369 struct isl_set *set;
1370
1371 qp = read_term(s, bmap, v);
1372 map = read_optional_disjuncts(s, bmap, v);
1373 set = isl_map_range(map);
1374
1375 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1376
1377 vars_drop(v, v->n - n);
1378
1379 obj.v = pwqp;
1380 return obj;
1381 }
1382
1383 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1384 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1385 {
1386 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1387 struct isl_obj obj_p;
1388 isl_qpolynomial *qp;
1389 isl_qpolynomial_fold *fold = NULL;
1390 isl_pw_qpolynomial_fold *pwf;
1391 isl_map *map;
1392 isl_set *set;
1393
1394 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1395 return obj_read_poly(s, bmap, v, n);
1396
1397 if (isl_stream_eat(s, '('))
1398 goto error;
1399
1400 qp = read_term(s, bmap, v);
1401 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1402
1403 while (isl_stream_eat_if_available(s, ',')) {
1404 isl_qpolynomial_fold *fold_i;
1405 qp = read_term(s, bmap, v);
1406 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1407 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1408 }
1409
1410 if (isl_stream_eat(s, ')'))
1411 goto error;
1412
1413 map = read_optional_disjuncts(s, bmap, v);
1414 set = isl_map_range(map);
1415 pwf = isl_pw_qpolynomial_fold_alloc(set, fold);
1416
1417 vars_drop(v, v->n - n);
1418
1419 obj.v = pwf;
1420 return obj;
1421 error:
1422 isl_basic_map_free(bmap);
1423 isl_qpolynomial_fold_free(fold);
1424 obj.type = isl_obj_none;
1425 return obj;
1426 }
1427
1428 static __isl_give isl_basic_map *add_equalities(__isl_take isl_basic_map *bmap,
1429 isl_mat *eq)
1430 {
1431 int i, k;
1432 unsigned total = 1 + isl_basic_map_total_dim(bmap);
1433
1434 if (!bmap || !eq)
1435 goto error;
1436
1437 bmap = isl_basic_map_extend_constraints(bmap, eq->n_row, 0);
1438
1439 for (i = 0; i < eq->n_row; ++i) {
1440 k = isl_basic_map_alloc_equality(bmap);
1441 if (k < 0)
1442 goto error;
1443 isl_seq_cpy(bmap->eq[k], eq->row[i], eq->n_col);
1444 isl_seq_clr(bmap->eq[k] + eq->n_col, total - eq->n_col);
1445 }
1446
1447 isl_mat_free(eq);
1448 return bmap;
1449 error:
1450 isl_mat_free(eq);
1451 isl_basic_map_free(bmap);
1452 return NULL;
1453 }
1454
1455 static struct isl_obj obj_read_body(struct isl_stream *s,
1456 __isl_take isl_dim *dim, struct vars *v)
1457 {
1458 struct isl_map *map = NULL;
1459 struct isl_token *tok;
1460 struct isl_obj obj = { isl_obj_set, NULL };
1461 int n = v->n;
1462 isl_mat *eq = NULL;
1463 isl_basic_map *bmap;
1464
1465 if (!next_is_tuple(s)) {
1466 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
1467 return obj_read_poly_or_fold(s, bmap, v, n);
1468 }
1469
1470 eq = isl_mat_alloc(s->ctx, 0, 1 + n);
1471
1472 dim = read_tuple(s, dim, isl_dim_in, v, &eq);
1473 if (!dim)
1474 goto error;
1475 tok = isl_stream_next_token(s);
1476 if (tok && tok->type == ISL_TOKEN_TO) {
1477 obj.type = isl_obj_map;
1478 isl_token_free(tok);
1479 if (!next_is_tuple(s)) {
1480 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
1481 bmap = add_equalities(bmap, eq);
1482 bmap = isl_basic_map_reverse(bmap);
1483 return obj_read_poly_or_fold(s, bmap, v, n);
1484 }
1485 dim = read_tuple(s, dim, isl_dim_out, v, &eq);
1486 if (!dim)
1487 goto error;
1488 } else {
1489 dim = isl_dim_reverse(dim);
1490 if (tok)
1491 isl_stream_push_token(s, tok);
1492 }
1493
1494 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
1495 bmap = add_equalities(bmap, eq);
1496
1497 map = read_optional_disjuncts(s, bmap, v);
1498
1499 vars_drop(v, v->n - n);
1500
1501 obj.v = map;
1502 return obj;
1503 error:
1504 isl_mat_free(eq);
1505 isl_dim_free(dim);
1506 obj.type = isl_obj_none;
1507 return obj;
1508 }
1509
1510 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1511 {
1512 if (obj.type == isl_obj_map) {
1513 obj.v = isl_union_map_from_map(obj.v);
1514 obj.type = isl_obj_union_map;
1515 } else if (obj.type == isl_obj_set) {
1516 obj.v = isl_union_set_from_set(obj.v);
1517 obj.type = isl_obj_union_set;
1518 } else if (obj.type == isl_obj_pw_qpolynomial) {
1519 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1520 obj.type = isl_obj_union_pw_qpolynomial;
1521 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1522 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1523 obj.type = isl_obj_union_pw_qpolynomial_fold;
1524 } else
1525 isl_assert(ctx, 0, goto error);
1526 return obj;
1527 error:
1528 obj.type->free(obj.v);
1529 obj.type = isl_obj_none;
1530 return obj;
1531 }
1532
1533 static struct isl_obj obj_add(struct isl_ctx *ctx,
1534 struct isl_obj obj1, struct isl_obj obj2)
1535 {
1536 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1537 obj1 = to_union(ctx, obj1);
1538 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1539 obj2 = to_union(ctx, obj2);
1540 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1541 obj1 = to_union(ctx, obj1);
1542 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1543 obj2 = to_union(ctx, obj2);
1544 if (obj1.type == isl_obj_pw_qpolynomial &&
1545 obj2.type == isl_obj_union_pw_qpolynomial)
1546 obj1 = to_union(ctx, obj1);
1547 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1548 obj2.type == isl_obj_pw_qpolynomial)
1549 obj2 = to_union(ctx, obj2);
1550 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1551 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1552 obj1 = to_union(ctx, obj1);
1553 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1554 obj2.type == isl_obj_pw_qpolynomial_fold)
1555 obj2 = to_union(ctx, obj2);
1556 isl_assert(ctx, obj1.type == obj2.type, goto error);
1557 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
1558 obj1 = to_union(ctx, obj1);
1559 obj2 = to_union(ctx, obj2);
1560 }
1561 if (obj1.type == isl_obj_set && !isl_set_has_equal_dim(obj1.v, obj2.v)) {
1562 obj1 = to_union(ctx, obj1);
1563 obj2 = to_union(ctx, obj2);
1564 }
1565 if (obj1.type == isl_obj_pw_qpolynomial &&
1566 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
1567 obj1 = to_union(ctx, obj1);
1568 obj2 = to_union(ctx, obj2);
1569 }
1570 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1571 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
1572 obj1 = to_union(ctx, obj1);
1573 obj2 = to_union(ctx, obj2);
1574 }
1575 obj1.v = obj1.type->add(obj1.v, obj2.v);
1576 return obj1;
1577 error:
1578 obj1.type->free(obj1.v);
1579 obj2.type->free(obj2.v);
1580 obj1.type = isl_obj_none;
1581 obj1.v = NULL;
1582 return obj1;
1583 }
1584
1585 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1586 {
1587 isl_dim *dim = NULL;
1588 struct isl_token *tok;
1589 struct vars *v = NULL;
1590 struct isl_obj obj = { isl_obj_set, NULL };
1591
1592 tok = isl_stream_next_token(s);
1593 if (!tok) {
1594 isl_stream_error(s, NULL, "unexpected EOF");
1595 goto error;
1596 }
1597 if (tok->type == ISL_TOKEN_VALUE) {
1598 struct isl_map *map;
1599 isl_stream_push_token(s, tok);
1600 map = map_read_polylib(s, nparam);
1601 if (!map)
1602 goto error;
1603 if (isl_map_dim(map, isl_dim_in) > 0)
1604 obj.type = isl_obj_map;
1605 obj.v = map;
1606 return obj;
1607 }
1608 v = vars_new(s->ctx);
1609 if (!v) {
1610 isl_stream_push_token(s, tok);
1611 goto error;
1612 }
1613 dim = isl_dim_alloc(s->ctx, 0, 0, 0);
1614 if (tok->type == '[') {
1615 isl_stream_push_token(s, tok);
1616 dim = read_tuple(s, dim, isl_dim_param, v, NULL);
1617 if (!dim)
1618 goto error;
1619 if (nparam >= 0)
1620 isl_assert(s->ctx, nparam == v->n, goto error);
1621 tok = isl_stream_next_token(s);
1622 if (!tok || tok->type != ISL_TOKEN_TO) {
1623 isl_stream_error(s, tok, "expecting '->'");
1624 if (tok)
1625 isl_stream_push_token(s, tok);
1626 goto error;
1627 }
1628 isl_token_free(tok);
1629 tok = isl_stream_next_token(s);
1630 } else if (nparam > 0)
1631 dim = isl_dim_add(dim, isl_dim_param, nparam);
1632 if (!tok || tok->type != '{') {
1633 isl_stream_error(s, tok, "expecting '{'");
1634 if (tok)
1635 isl_stream_push_token(s, tok);
1636 goto error;
1637 }
1638 isl_token_free(tok);
1639
1640 tok = isl_stream_next_token(s);
1641 if (!tok)
1642 ;
1643 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1644 isl_token_free(tok);
1645 if (isl_stream_eat(s, '='))
1646 goto error;
1647 dim = read_tuple(s, dim, isl_dim_param, v, NULL);
1648 if (!dim)
1649 goto error;
1650 if (nparam >= 0)
1651 isl_assert(s->ctx, nparam == v->n, goto error);
1652 } else if (tok->type == '}') {
1653 obj.type = isl_obj_union_set;
1654 obj.v = isl_union_set_empty(isl_dim_copy(dim));
1655 isl_token_free(tok);
1656 goto done;
1657 } else
1658 isl_stream_push_token(s, tok);
1659
1660 for (;;) {
1661 struct isl_obj o;
1662 tok = NULL;
1663 o = obj_read_body(s, isl_dim_copy(dim), v);
1664 if (o.type == isl_obj_none)
1665 break;
1666 if (!obj.v)
1667 obj = o;
1668 else {
1669 obj = obj_add(s->ctx, obj, o);
1670 if (obj.type == isl_obj_none)
1671 break;
1672 }
1673 tok = isl_stream_next_token(s);
1674 if (!tok || tok->type != ';')
1675 break;
1676 isl_token_free(tok);
1677 }
1678
1679 if (tok && tok->type == '}') {
1680 isl_token_free(tok);
1681 } else {
1682 isl_stream_error(s, tok, "unexpected isl_token");
1683 if (tok)
1684 isl_token_free(tok);
1685 goto error;
1686 }
1687 done:
1688 vars_free(v);
1689 isl_dim_free(dim);
1690
1691 return obj;
1692 error:
1693 isl_dim_free(dim);
1694 obj.type->free(obj.v);
1695 if (v)
1696 vars_free(v);
1697 obj.v = NULL;
1698 return obj;
1699 }
1700
1701 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1702 {
1703 return obj_read(s, -1);
1704 }
1705
1706 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
1707 {
1708 struct isl_obj obj;
1709 struct isl_map *map;
1710
1711 obj = obj_read(s, nparam);
1712 if (obj.v)
1713 isl_assert(s->ctx, obj.type == isl_obj_map ||
1714 obj.type == isl_obj_set, goto error);
1715
1716 return obj.v;
1717 error:
1718 obj.type->free(obj.v);
1719 return NULL;
1720 }
1721
1722 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
1723 {
1724 struct isl_obj obj;
1725 struct isl_set *set;
1726
1727 obj = obj_read(s, nparam);
1728 if (obj.v)
1729 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
1730
1731 return obj.v;
1732 error:
1733 obj.type->free(obj.v);
1734 return NULL;
1735 }
1736
1737 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
1738 {
1739 struct isl_obj obj;
1740 struct isl_map *map;
1741 struct isl_basic_map *bmap;
1742
1743 obj = obj_read(s, nparam);
1744 map = obj.v;
1745 if (!map)
1746 return NULL;
1747
1748 isl_assert(map->ctx, map->n <= 1, goto error);
1749
1750 if (map->n == 0)
1751 bmap = isl_basic_map_empty_like_map(map);
1752 else
1753 bmap = isl_basic_map_copy(map->p[0]);
1754
1755 isl_map_free(map);
1756
1757 return bmap;
1758 error:
1759 isl_map_free(map);
1760 return NULL;
1761 }
1762
1763 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
1764 FILE *input, int nparam)
1765 {
1766 struct isl_basic_map *bmap;
1767 struct isl_stream *s = isl_stream_new_file(ctx, input);
1768 if (!s)
1769 return NULL;
1770 bmap = basic_map_read(s, nparam);
1771 isl_stream_free(s);
1772 return bmap;
1773 }
1774
1775 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
1776 FILE *input, int nparam)
1777 {
1778 struct isl_basic_map *bmap;
1779 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
1780 if (!bmap)
1781 return NULL;
1782 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1783 return (struct isl_basic_set *)bmap;
1784 error:
1785 isl_basic_map_free(bmap);
1786 return NULL;
1787 }
1788
1789 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
1790 const char *str, int nparam)
1791 {
1792 struct isl_basic_map *bmap;
1793 struct isl_stream *s = isl_stream_new_str(ctx, str);
1794 if (!s)
1795 return NULL;
1796 bmap = basic_map_read(s, nparam);
1797 isl_stream_free(s);
1798 return bmap;
1799 }
1800
1801 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
1802 const char *str, int nparam)
1803 {
1804 struct isl_basic_map *bmap;
1805 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
1806 if (!bmap)
1807 return NULL;
1808 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1809 return (struct isl_basic_set *)bmap;
1810 error:
1811 isl_basic_map_free(bmap);
1812 return NULL;
1813 }
1814
1815 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
1816 FILE *input, int nparam)
1817 {
1818 struct isl_map *map;
1819 struct isl_stream *s = isl_stream_new_file(ctx, input);
1820 if (!s)
1821 return NULL;
1822 map = isl_stream_read_map(s, nparam);
1823 isl_stream_free(s);
1824 return map;
1825 }
1826
1827 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
1828 const char *str, int nparam)
1829 {
1830 struct isl_map *map;
1831 struct isl_stream *s = isl_stream_new_str(ctx, str);
1832 if (!s)
1833 return NULL;
1834 map = isl_stream_read_map(s, nparam);
1835 isl_stream_free(s);
1836 return map;
1837 }
1838
1839 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
1840 FILE *input, int nparam)
1841 {
1842 struct isl_map *map;
1843 map = isl_map_read_from_file(ctx, input, nparam);
1844 if (!map)
1845 return NULL;
1846 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
1847 return (struct isl_set *)map;
1848 error:
1849 isl_map_free(map);
1850 return NULL;
1851 }
1852
1853 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
1854 const char *str, int nparam)
1855 {
1856 struct isl_map *map;
1857 map = isl_map_read_from_str(ctx, str, nparam);
1858 if (!map)
1859 return NULL;
1860 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
1861 return (struct isl_set *)map;
1862 error:
1863 isl_map_free(map);
1864 return NULL;
1865 }
1866
1867 static char *next_line(FILE *input, char *line, unsigned len)
1868 {
1869 char *p;
1870
1871 do {
1872 if (!(p = fgets(line, len, input)))
1873 return NULL;
1874 while (isspace(*p) && *p != '\n')
1875 ++p;
1876 } while (*p == '#' || *p == '\n');
1877
1878 return p;
1879 }
1880
1881 static struct isl_vec *isl_vec_read_from_file_polylib(struct isl_ctx *ctx,
1882 FILE *input)
1883 {
1884 struct isl_vec *vec = NULL;
1885 char line[1024];
1886 char val[1024];
1887 char *p;
1888 unsigned size;
1889 int j;
1890 int n;
1891 int offset;
1892
1893 isl_assert(ctx, next_line(input, line, sizeof(line)), return NULL);
1894 isl_assert(ctx, sscanf(line, "%u", &size) == 1, return NULL);
1895
1896 vec = isl_vec_alloc(ctx, size);
1897
1898 p = next_line(input, line, sizeof(line));
1899 isl_assert(ctx, p, goto error);
1900
1901 for (j = 0; j < size; ++j) {
1902 n = sscanf(p, "%s%n", val, &offset);
1903 isl_assert(ctx, n != 0, goto error);
1904 isl_int_read(vec->el[j], val);
1905 p += offset;
1906 }
1907
1908 return vec;
1909 error:
1910 isl_vec_free(vec);
1911 return NULL;
1912 }
1913
1914 struct isl_vec *isl_vec_read_from_file(struct isl_ctx *ctx,
1915 FILE *input, unsigned input_format)
1916 {
1917 if (input_format == ISL_FORMAT_POLYLIB)
1918 return isl_vec_read_from_file_polylib(ctx, input);
1919 else
1920 isl_assert(ctx, 0, return NULL);
1921 }
1922
1923 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
1924 struct isl_stream *s)
1925 {
1926 struct isl_obj obj;
1927 struct isl_pw_qpolynomial *pwqp;
1928
1929 obj = obj_read(s, -1);
1930 if (obj.v)
1931 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
1932 goto error);
1933
1934 return obj.v;
1935 error:
1936 obj.type->free(obj.v);
1937 return NULL;
1938 }
1939
1940 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
1941 const char *str)
1942 {
1943 isl_pw_qpolynomial *pwqp;
1944 struct isl_stream *s = isl_stream_new_str(ctx, str);
1945 if (!s)
1946 return NULL;
1947 pwqp = isl_stream_read_pw_qpolynomial(s);
1948 isl_stream_free(s);
1949 return pwqp;
1950 }
Integer set library