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isl_stream: keep track of textual representation of tokens for better error reporting
[isl.git] / isl_input.c
blob619ebd0043fb64c168fbbdb0a69f7ef71bceb60b
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_map_private.h>
18 #include <isl/set.h>
19 #include <isl/seq.h>
20 #include <isl/div.h>
21 #include <isl/stream.h>
22 #include <isl/obj.h>
23 #include "isl_polynomial_private.h"
24 #include <isl/union_map.h>
25 #include <isl_mat_private.h>
26
27 struct variable {
28 char *name;
29 int pos;
30 isl_vec *def;
31 struct variable *next;
32 };
33
34 struct vars {
35 struct isl_ctx *ctx;
36 int n;
37 struct variable *v;
38 };
39
40 static struct vars *vars_new(struct isl_ctx *ctx)
41 {
42 struct vars *v;
43 v = isl_alloc_type(ctx, struct vars);
44 if (!v)
45 return NULL;
46 v->ctx = ctx;
47 v->n = 0;
48 v->v = NULL;
49 return v;
50 }
51
52 static void variable_free(struct variable *var)
53 {
54 while (var) {
55 struct variable *next = var->next;
56 isl_vec_free(var->def);
57 free(var->name);
58 free(var);
59 var = next;
60 }
61 }
62
63 static void vars_free(struct vars *v)
64 {
65 if (!v)
66 return;
67 variable_free(v->v);
68 free(v);
69 }
70
71 static void vars_drop(struct vars *v, int n)
72 {
73 struct variable *var;
74
75 if (!v || !v->v)
76 return;
77
78 v->n -= n;
79
80 var = v->v;
81 while (--n >= 0) {
82 struct variable *next = var->next;
83 isl_vec_free(var->def);
84 free(var->name);
85 free(var);
86 var = next;
87 }
88 v->v = var;
89 }
90
91 static struct variable *variable_new(struct vars *v, const char *name, int len,
92 int pos)
93 {
94 struct variable *var;
95 var = isl_alloc_type(v->ctx, struct variable);
96 if (!var)
97 goto error;
98 var->name = strdup(name);
99 var->name[len] = '\0';
100 var->pos = pos;
101 var->def = NULL;
102 var->next = v->v;
103 return var;
104 error:
105 variable_free(v->v);
106 return NULL;
107 }
108
109 static int vars_pos(struct vars *v, const char *s, int len)
110 {
111 int pos;
112 struct variable *q;
113
114 if (len == -1)
115 len = strlen(s);
116 for (q = v->v; q; q = q->next) {
117 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
118 break;
119 }
120 if (q)
121 pos = q->pos;
122 else {
123 pos = v->n;
124 v->v = variable_new(v, s, len, v->n);
125 if (!v->v)
126 return -1;
127 v->n++;
128 }
129 return pos;
130 }
131
132 static int vars_add_anon(struct vars *v)
133 {
134 v->v = variable_new(v, "", 0, v->n);
135
136 if (!v->v)
137 return -1;
138 v->n++;
139
140 return 0;
141 }
142
143 static __isl_give isl_basic_map *set_name(__isl_take isl_basic_map *bmap,
144 enum isl_dim_type type, unsigned pos, char *name)
145 {
146 char *prime;
147
148 if (!bmap)
149 return NULL;
150 if (!name)
151 return bmap;
152
153 prime = strchr(name, '\'');
154 if (prime)
155 *prime = '\0';
156 bmap = isl_basic_map_set_dim_name(bmap, type, pos, name);
157 if (prime)
158 *prime = '\'';
159
160 return bmap;
161 }
162
163 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
164 {
165 struct isl_token *tok;
166
167 tok = isl_stream_next_token(s);
168 if (!tok || tok->type != ISL_TOKEN_VALUE) {
169 isl_stream_error(s, tok, "expecting constant value");
170 goto error;
171 }
172
173 isl_int_mul(*f, *f, tok->u.v);
174
175 isl_token_free(tok);
176
177 if (isl_stream_eat_if_available(s, '*'))
178 return accept_cst_factor(s, f);
179
180 return 0;
181 error:
182 isl_token_free(tok);
183 return -1;
184 }
185
186 /* Given an affine expression aff, return an affine expression
187 * for aff % d, with d the next token on the stream, which is
188 * assumed to be a constant.
189 *
190 * We introduce an integer division q = [aff/d] and the result
191 * is set to aff - d q.
192 */
193 static __isl_give isl_vec *affine_mod(struct isl_stream *s,
194 struct vars *v, __isl_take isl_vec *aff)
195 {
196 struct isl_token *tok;
197 struct variable *var;
198 isl_vec *mod;
199
200 tok = isl_stream_next_token(s);
201 if (!tok || tok->type != ISL_TOKEN_VALUE) {
202 isl_stream_error(s, tok, "expecting constant value");
203 goto error;
204 }
205
206 if (vars_add_anon(v) < 0)
207 goto error;
208
209 var = v->v;
210
211 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
212 if (!var->def)
213 goto error;
214 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
215 isl_int_set_si(var->def->el[1 + aff->size], 0);
216 isl_int_set(var->def->el[0], tok->u.v);
217
218 mod = isl_vec_alloc(v->ctx, 1 + v->n);
219 if (!mod)
220 goto error;
221
222 isl_seq_cpy(mod->el, aff->el, aff->size);
223 isl_int_neg(mod->el[aff->size], tok->u.v);
224
225 isl_vec_free(aff);
226 isl_token_free(tok);
227 return mod;
228 error:
229 isl_vec_free(aff);
230 isl_token_free(tok);
231 return NULL;
232 }
233
234 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v);
235 static int read_div_definition(struct isl_stream *s, struct vars *v);
236
237 static __isl_give isl_vec *accept_affine_factor(struct isl_stream *s,
238 struct vars *v)
239 {
240 struct isl_token *tok = NULL;
241 isl_vec *aff = NULL;
242
243 tok = isl_stream_next_token(s);
244 if (!tok) {
245 isl_stream_error(s, NULL, "unexpected EOF");
246 goto error;
247 }
248 if (tok->type == ISL_TOKEN_IDENT) {
249 int n = v->n;
250 int pos = vars_pos(v, tok->u.s, -1);
251 if (pos < 0)
252 goto error;
253 if (pos >= n) {
254 isl_stream_error(s, tok, "unknown identifier");
255 goto error;
256 }
257
258 aff = isl_vec_alloc(v->ctx, 1 + v->n);
259 if (!aff)
260 goto error;
261 isl_seq_clr(aff->el, aff->size);
262 isl_int_set_si(aff->el[1 + pos], 1);
263 isl_token_free(tok);
264 } else if (tok->type == ISL_TOKEN_VALUE) {
265 if (isl_stream_eat_if_available(s, '*')) {
266 aff = accept_affine_factor(s, v);
267 aff = isl_vec_scale(aff, tok->u.v);
268 } else {
269 aff = isl_vec_alloc(v->ctx, 1 + v->n);
270 if (!aff)
271 goto error;
272 isl_seq_clr(aff->el, aff->size);
273 isl_int_set(aff->el[0], tok->u.v);
274 }
275 isl_token_free(tok);
276 } else if (tok->type == '(') {
277 isl_token_free(tok);
278 tok = NULL;
279 aff = accept_affine(s, v);
280 if (!aff)
281 goto error;
282 if (isl_stream_eat(s, ')'))
283 goto error;
284 } else if (tok->type == '[') {
285 if (vars_add_anon(v) < 0)
286 goto error;
287 aff = isl_vec_alloc(v->ctx, 1 + v->n);
288 if (!aff)
289 goto error;
290 isl_seq_clr(aff->el, aff->size);
291 isl_int_set_si(aff->el[1 + v->n - 1], 1);
292 isl_stream_push_token(s, tok);
293 tok = NULL;
294 if (read_div_definition(s, v) < 0)
295 goto error;
296 } else {
297 isl_stream_error(s, tok, "expecting factor");
298 goto error;
299 }
300 if (isl_stream_eat_if_available(s, '%'))
301 return affine_mod(s, v, aff);
302 if (isl_stream_eat_if_available(s, '*')) {
303 isl_int f;
304 isl_int_init(f);
305 isl_int_set_si(f, 1);
306 if (accept_cst_factor(s, &f) < 0) {
307 isl_int_clear(f);
308 goto error2;
309 }
310 aff = isl_vec_scale(aff, f);
311 isl_int_clear(f);
312 }
313
314 return aff;
315 error:
316 isl_token_free(tok);
317 error2:
318 isl_vec_free(aff);
319 return NULL;
320 }
321
322 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
323 {
324 struct isl_token *tok = NULL;
325 struct isl_vec *aff;
326 int sign = 1;
327
328 aff = isl_vec_alloc(v->ctx, 1 + v->n);
329 if (!aff)
330 return NULL;
331 isl_seq_clr(aff->el, aff->size);
332
333 for (;;) {
334 tok = isl_stream_next_token(s);
335 if (!tok) {
336 isl_stream_error(s, NULL, "unexpected EOF");
337 goto error;
338 }
339 if (tok->type == '-') {
340 sign = -sign;
341 isl_token_free(tok);
342 continue;
343 }
344 if (tok->type == '(' || tok->type == '[' ||
345 tok->type == ISL_TOKEN_IDENT) {
346 isl_vec *aff2;
347 isl_stream_push_token(s, tok);
348 tok = NULL;
349 aff2 = accept_affine_factor(s, v);
350 if (sign < 0)
351 aff2 = isl_vec_scale(aff2, s->ctx->negone);
352 aff = isl_vec_zero_extend(aff, 1 + v->n);
353 aff = isl_vec_add(aff, aff2);
354 if (!aff)
355 goto error;
356 sign = 1;
357 } else if (tok->type == ISL_TOKEN_VALUE) {
358 if (sign < 0)
359 isl_int_neg(tok->u.v, tok->u.v);
360 if (isl_stream_eat_if_available(s, '*') ||
361 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
362 isl_vec *aff2;
363 aff2 = accept_affine_factor(s, v);
364 aff2 = isl_vec_scale(aff2, tok->u.v);
365 aff = isl_vec_zero_extend(aff, 1 + v->n);
366 aff = isl_vec_add(aff, aff2);
367 if (!aff)
368 goto error;
369 } else {
370 isl_int_add(aff->el[0], aff->el[0], tok->u.v);
371 }
372 sign = 1;
373 } else {
374 isl_stream_error(s, tok, "unexpected isl_token");
375 isl_stream_push_token(s, tok);
376 isl_vec_free(aff);
377 return NULL;
378 }
379 isl_token_free(tok);
380
381 tok = isl_stream_next_token(s);
382 if (tok && tok->type == '-') {
383 sign = -sign;
384 isl_token_free(tok);
385 } else if (tok && tok->type == '+') {
386 /* nothing */
387 isl_token_free(tok);
388 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
389 isl_int_is_neg(tok->u.v)) {
390 isl_stream_push_token(s, tok);
391 } else {
392 if (tok)
393 isl_stream_push_token(s, tok);
394 break;
395 }
396 }
397
398 return aff;
399 error:
400 isl_token_free(tok);
401 isl_vec_free(aff);
402 return NULL;
403 }
404
405 /* Add any variables in the variable list "v" that are not already in "bmap"
406 * as existentially quantified variables in "bmap".
407 */
408 static __isl_give isl_basic_map *add_divs(__isl_take isl_basic_map *bmap,
409 struct vars *v)
410 {
411 int i;
412 int extra;
413 struct variable *var;
414
415 extra = v->n - isl_basic_map_total_dim(bmap);
416
417 if (extra == 0)
418 return bmap;
419
420 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
421 extra, 0, 2 * extra);
422
423 for (i = 0; i < extra; ++i)
424 if (isl_basic_map_alloc_div(bmap) < 0)
425 goto error;
426
427 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
428 int k = bmap->n_div - 1 - i;
429
430 isl_seq_cpy(bmap->div[k], var->def->el, var->def->size);
431 isl_seq_clr(bmap->div[k] + var->def->size,
432 2 + v->n - var->def->size);
433
434 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
435 goto error;
436 }
437
438 return bmap;
439 error:
440 isl_basic_map_free(bmap);
441 return NULL;
442 }
443
444 static __isl_give isl_basic_map *read_var_def(struct isl_stream *s,
445 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
446 {
447 isl_dim *dim;
448 isl_basic_map *def = NULL;
449 struct isl_vec *vec;
450 int k;
451 int n;
452
453 if (vars_add_anon(v) < 0)
454 goto error;
455 n = v->n;
456
457 vec = accept_affine(s, v);
458 if (!vec)
459 goto error;
460
461 dim = isl_basic_map_get_dim(bmap);
462 def = isl_basic_map_universe(dim);
463 def = add_divs(def, v);
464 def = isl_basic_map_extend_constraints(def, 1, 0);
465 k = isl_basic_map_alloc_equality(def);
466 if (k >= 0) {
467 isl_seq_cpy(def->eq[k], vec->el, vec->size);
468 isl_int_set_si(def->eq[k][1 + n - 1], -1);
469 }
470 isl_vec_free(vec);
471 if (k < 0)
472 goto error;
473
474 vars_drop(v, v->n - n);
475
476 def = isl_basic_map_simplify(def);
477 def = isl_basic_map_finalize(def);
478 bmap = isl_basic_map_intersect(bmap, def);
479 return bmap;
480 error:
481 isl_basic_map_free(bmap);
482 isl_basic_map_free(def);
483 return NULL;
484 }
485
486 static __isl_give isl_basic_map *read_var_list(struct isl_stream *s,
487 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
488 {
489 int i = 0;
490 struct isl_token *tok;
491
492 while ((tok = isl_stream_next_token(s)) != NULL) {
493 int new_name = 0;
494
495 if (tok->type == ISL_TOKEN_IDENT) {
496 int n = v->n;
497 int p = vars_pos(v, tok->u.s, -1);
498 if (p < 0)
499 goto error;
500 new_name = p >= n;
501 }
502
503 if (new_name) {
504 bmap = isl_basic_map_add(bmap, type, 1);
505 bmap = set_name(bmap, type, i, v->v->name);
506 isl_token_free(tok);
507 } else if (tok->type == ISL_TOKEN_IDENT ||
508 tok->type == ISL_TOKEN_VALUE ||
509 tok->type == '-' ||
510 tok->type == '(') {
511 if (type == isl_dim_param) {
512 isl_stream_error(s, tok,
513 "expecting unique identifier");
514 goto error;
515 }
516 isl_stream_push_token(s, tok);
517 tok = NULL;
518 bmap = isl_basic_map_add(bmap, type, 1);
519 bmap = read_var_def(s, bmap, type, v);
520 } else
521 break;
522
523 tok = isl_stream_next_token(s);
524 if (!tok || tok->type != ',')
525 break;
526
527 isl_token_free(tok);
528 i++;
529 }
530 if (tok)
531 isl_stream_push_token(s, tok);
532
533 return bmap;
534 error:
535 isl_token_free(tok);
536 isl_basic_map_free(bmap);
537 return NULL;
538 }
539
540 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
541 struct vars *v)
542 {
543 struct isl_vec *vec;
544 struct isl_mat *mat;
545 struct isl_token *tok = NULL;
546
547 vec = accept_affine(s, v);
548 mat = isl_mat_from_row_vec(vec);
549 if (!mat)
550 return NULL;
551
552 for (;;) {
553 tok = isl_stream_next_token(s);
554 if (!tok) {
555 isl_stream_error(s, NULL, "unexpected EOF");
556 goto error;
557 }
558 if (tok->type != ',') {
559 isl_stream_push_token(s, tok);
560 break;
561 }
562 isl_token_free(tok);
563
564 vec = accept_affine(s, v);
565 mat = isl_mat_add_zero_cols(mat, 1 + v->n - isl_mat_cols(mat));
566 mat = isl_mat_vec_concat(mat, vec);
567 if (!mat)
568 return NULL;
569 }
570
571 return mat;
572 error:
573 isl_mat_free(mat);
574 return NULL;
575 }
576
577 static int read_div_definition(struct isl_stream *s, struct vars *v)
578 {
579 struct isl_token *tok;
580 int seen_paren = 0;
581 struct isl_vec *aff;
582 struct variable *var;
583
584 if (isl_stream_eat(s, '['))
585 return -1;
586
587 tok = isl_stream_next_token(s);
588 if (!tok)
589 return -1;
590 if (tok->type == '(') {
591 seen_paren = 1;
592 isl_token_free(tok);
593 } else
594 isl_stream_push_token(s, tok);
595
596 var = v->v;
597
598 aff = accept_affine(s, v);
599 if (!aff)
600 return -1;
601
602 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
603 if (!var->def) {
604 isl_vec_free(aff);
605 return -1;
606 }
607
608 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
609
610 isl_vec_free(aff);
611
612 if (seen_paren && isl_stream_eat(s, ')'))
613 return -1;
614 if (isl_stream_eat(s, '/'))
615 return -1;
616
617 tok = isl_stream_next_token(s);
618 if (!tok)
619 return -1;
620 if (tok->type != ISL_TOKEN_VALUE) {
621 isl_stream_error(s, tok, "expected denominator");
622 isl_stream_push_token(s, tok);
623 return -1;
624 }
625 isl_int_set(var->def->el[0], tok->u.v);
626 isl_token_free(tok);
627
628 if (isl_stream_eat(s, ']'))
629 return -1;
630
631 return 0;
632 }
633
634 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
635 struct vars *v, struct isl_basic_map *bmap, int k)
636 {
637 struct variable *var = v->v;
638
639 if (read_div_definition(s, v) < 0)
640 goto error;
641
642 isl_seq_cpy(bmap->div[k], var->def->el, 2 + v->n);
643
644 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
645 goto error;
646
647 return bmap;
648 error:
649 isl_basic_map_free(bmap);
650 return NULL;
651 }
652
653 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
654 struct vars *v, struct isl_basic_map *bmap)
655 {
656 struct isl_token *tok;
657
658 while ((tok = isl_stream_next_token(s)) != NULL) {
659 int k;
660 int p;
661 int n = v->n;
662 unsigned total = isl_basic_map_total_dim(bmap);
663
664 if (tok->type != ISL_TOKEN_IDENT)
665 break;
666
667 p = vars_pos(v, tok->u.s, -1);
668 if (p < 0)
669 goto error;
670 if (p < n) {
671 isl_stream_error(s, tok, "expecting unique identifier");
672 goto error;
673 }
674
675 bmap = isl_basic_map_cow(bmap);
676 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
677 1, 0, 2);
678
679 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
680 goto error;
681 isl_seq_clr(bmap->div[k], 1 + 1 + total);
682
683 isl_token_free(tok);
684 tok = isl_stream_next_token(s);
685 if (tok && tok->type == '=') {
686 isl_token_free(tok);
687 bmap = add_div_definition(s, v, bmap, k);
688 tok = isl_stream_next_token(s);
689 }
690
691 if (!tok || tok->type != ',')
692 break;
693
694 isl_token_free(tok);
695 }
696 if (tok)
697 isl_stream_push_token(s, tok);
698
699 return bmap;
700 error:
701 isl_token_free(tok);
702 isl_basic_map_free(bmap);
703 return NULL;
704 }
705
706 static int next_is_tuple(struct isl_stream *s)
707 {
708 struct isl_token *tok;
709 int is_tuple;
710
711 tok = isl_stream_next_token(s);
712 if (!tok)
713 return 0;
714 if (tok->type == '[') {
715 isl_stream_push_token(s, tok);
716 return 1;
717 }
718 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
719 isl_stream_push_token(s, tok);
720 return 0;
721 }
722
723 is_tuple = isl_stream_next_token_is(s, '[');
724
725 isl_stream_push_token(s, tok);
726
727 return is_tuple;
728 }
729
730 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
731 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v);
732
733 static __isl_give isl_basic_map *read_nested_tuple(struct isl_stream *s,
734 __isl_take isl_basic_map *bmap, struct vars *v)
735 {
736 bmap = read_tuple(s, bmap, isl_dim_in, v);
737 if (isl_stream_eat(s, ISL_TOKEN_TO))
738 goto error;
739 bmap = read_tuple(s, bmap, isl_dim_out, v);
740 bmap = isl_basic_map_from_range(isl_basic_map_wrap(bmap));
741 return bmap;
742 error:
743 isl_basic_map_free(bmap);
744 return NULL;
745 }
746
747 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
748 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
749 {
750 struct isl_token *tok;
751 char *name = NULL;
752
753 tok = isl_stream_next_token(s);
754 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
755 name = strdup(tok->u.s);
756 if (!name)
757 goto error;
758 isl_token_free(tok);
759 tok = isl_stream_next_token(s);
760 }
761 if (!tok || tok->type != '[') {
762 isl_stream_error(s, tok, "expecting '['");
763 goto error;
764 }
765 isl_token_free(tok);
766 if (type != isl_dim_param && next_is_tuple(s)) {
767 isl_dim *dim = isl_basic_map_get_dim(bmap);
768 int nparam = isl_dim_size(dim, isl_dim_param);
769 int n_in = isl_dim_size(dim, isl_dim_in);
770 isl_basic_map *nested;
771 if (type == isl_dim_out)
772 dim = isl_dim_move(dim, isl_dim_param, nparam,
773 isl_dim_in, 0, n_in);
774 nested = isl_basic_map_alloc_dim(dim, 0, 0, 0);
775 nested = read_nested_tuple(s, nested, v);
776 if (type == isl_dim_in) {
777 nested = isl_basic_map_reverse(nested);
778 bmap = isl_basic_map_intersect(nested, bmap);
779 } else {
780 isl_basic_set *bset;
781 dim = isl_dim_range(isl_basic_map_get_dim(nested));
782 dim = isl_dim_drop(dim, isl_dim_param, nparam, n_in);
783 dim = isl_dim_join(isl_basic_map_get_dim(bmap), dim);
784 bset = isl_basic_map_domain(bmap);
785 nested = isl_basic_map_reset_dim(nested, dim);
786 bmap = isl_basic_map_intersect_domain(nested, bset);
787 }
788 } else
789 bmap = read_var_list(s, bmap, type, v);
790 tok = isl_stream_next_token(s);
791 if (!tok || tok->type != ']') {
792 isl_stream_error(s, tok, "expecting ']'");
793 goto error;
794 }
795 isl_token_free(tok);
796
797 if (name) {
798 bmap = isl_basic_map_set_tuple_name(bmap, type, name);
799 free(name);
800 }
801
802 return bmap;
803 error:
804 if (tok)
805 isl_token_free(tok);
806 isl_basic_map_free(bmap);
807 return NULL;
808 }
809
810 static struct isl_basic_map *add_constraints(struct isl_stream *s,
811 struct vars *v, struct isl_basic_map *bmap);
812
813 static struct isl_basic_map *add_exists(struct isl_stream *s,
814 struct vars *v, struct isl_basic_map *bmap)
815 {
816 struct isl_token *tok;
817 int n = v->n;
818 int extra;
819 int seen_paren = 0;
820 int i;
821 unsigned total;
822
823 tok = isl_stream_next_token(s);
824 if (!tok)
825 goto error;
826 if (tok->type == '(') {
827 seen_paren = 1;
828 isl_token_free(tok);
829 } else
830 isl_stream_push_token(s, tok);
831
832 bmap = read_defined_var_list(s, v, bmap);
833 if (!bmap)
834 goto error;
835
836 if (isl_stream_eat(s, ':'))
837 goto error;
838 bmap = add_constraints(s, v, bmap);
839 if (seen_paren && isl_stream_eat(s, ')'))
840 goto error;
841 return bmap;
842 error:
843 isl_basic_map_free(bmap);
844 return NULL;
845 }
846
847 static __isl_give isl_basic_map *construct_constraint(
848 __isl_take isl_basic_map *bmap, enum isl_token_type type,
849 isl_int *left, isl_int *right)
850 {
851 int k;
852 unsigned len;
853 struct isl_ctx *ctx;
854
855 if (!bmap)
856 return NULL;
857 len = 1 + isl_basic_map_total_dim(bmap);
858 ctx = bmap->ctx;
859
860 k = isl_basic_map_alloc_inequality(bmap);
861 if (k < 0)
862 goto error;
863 if (type == ISL_TOKEN_LE)
864 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
865 ctx->one, right,
866 len);
867 else if (type == ISL_TOKEN_GE)
868 isl_seq_combine(bmap->ineq[k], ctx->one, left,
869 ctx->negone, right,
870 len);
871 else if (type == ISL_TOKEN_LT) {
872 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
873 ctx->one, right,
874 len);
875 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
876 } else if (type == ISL_TOKEN_GT) {
877 isl_seq_combine(bmap->ineq[k], ctx->one, left,
878 ctx->negone, right,
879 len);
880 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
881 } else {
882 isl_seq_combine(bmap->ineq[k], ctx->one, left,
883 ctx->negone, right,
884 len);
885 isl_basic_map_inequality_to_equality(bmap, k);
886 }
887
888 return bmap;
889 error:
890 isl_basic_map_free(bmap);
891 return NULL;
892 }
893
894 static int is_comparator(struct isl_token *tok)
895 {
896 if (!tok)
897 return 0;
898
899 switch (tok->type) {
900 case ISL_TOKEN_LT:
901 case ISL_TOKEN_GT:
902 case ISL_TOKEN_LE:
903 case ISL_TOKEN_GE:
904 case '=':
905 return 1;
906 default:
907 return 0;
908 }
909 }
910
911 static struct isl_basic_map *add_constraint(struct isl_stream *s,
912 struct vars *v, struct isl_basic_map *bmap)
913 {
914 int i, j;
915 struct isl_token *tok = NULL;
916 struct isl_mat *aff1 = NULL, *aff2 = NULL;
917
918 tok = isl_stream_next_token(s);
919 if (!tok)
920 goto error;
921 if (tok->type == ISL_TOKEN_EXISTS) {
922 isl_token_free(tok);
923 return add_exists(s, v, bmap);
924 }
925 isl_stream_push_token(s, tok);
926 tok = NULL;
927
928 bmap = isl_basic_map_cow(bmap);
929
930 aff1 = accept_affine_list(s, v);
931 if (!aff1)
932 goto error;
933 tok = isl_stream_next_token(s);
934 if (!is_comparator(tok)) {
935 isl_stream_error(s, tok, "missing operator");
936 if (tok)
937 isl_stream_push_token(s, tok);
938 tok = NULL;
939 goto error;
940 }
941 for (;;) {
942 aff2 = accept_affine_list(s, v);
943 if (!aff2)
944 goto error;
945
946 aff1 = isl_mat_add_zero_cols(aff1, aff2->n_col - aff1->n_col);
947 if (!aff1)
948 goto error;
949 bmap = add_divs(bmap, v);
950 bmap = isl_basic_map_extend_constraints(bmap, 0,
951 aff1->n_row * aff2->n_row);
952 for (i = 0; i < aff1->n_row; ++i)
953 for (j = 0; j < aff2->n_row; ++j)
954 bmap = construct_constraint(bmap, tok->type,
955 aff1->row[i], aff2->row[j]);
956 isl_token_free(tok);
957 isl_mat_free(aff1);
958 aff1 = aff2;
959
960 tok = isl_stream_next_token(s);
961 if (!is_comparator(tok)) {
962 if (tok)
963 isl_stream_push_token(s, tok);
964 break;
965 }
966 }
967 isl_mat_free(aff1);
968
969 return bmap;
970 error:
971 if (tok)
972 isl_token_free(tok);
973 isl_mat_free(aff1);
974 isl_mat_free(aff2);
975 isl_basic_map_free(bmap);
976 return NULL;
977 }
978
979 static struct isl_basic_map *add_constraints(struct isl_stream *s,
980 struct vars *v, struct isl_basic_map *bmap)
981 {
982 struct isl_token *tok;
983
984 for (;;) {
985 bmap = add_constraint(s, v, bmap);
986 if (!bmap)
987 return NULL;
988 tok = isl_stream_next_token(s);
989 if (!tok) {
990 isl_stream_error(s, NULL, "unexpected EOF");
991 goto error;
992 }
993 if (tok->type != ISL_TOKEN_AND)
994 break;
995 isl_token_free(tok);
996 }
997 isl_stream_push_token(s, tok);
998
999 return bmap;
1000 error:
1001 if (tok)
1002 isl_token_free(tok);
1003 isl_basic_map_free(bmap);
1004 return NULL;
1005 }
1006
1007 static isl_map *read_constraint(struct isl_stream *s,
1008 struct vars *v, __isl_take isl_dim *dim)
1009 {
1010 struct isl_basic_map *bmap;
1011 int n = v->n;
1012
1013 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
1014 if (!bmap)
1015 return NULL;
1016
1017 bmap = add_constraint(s, v, bmap);
1018 bmap = isl_basic_map_simplify(bmap);
1019 bmap = isl_basic_map_finalize(bmap);
1020
1021 vars_drop(v, v->n - n);
1022
1023 return isl_map_from_basic_map(bmap);
1024 error:
1025 isl_basic_map_free(bmap);
1026 return NULL;
1027 }
1028
1029 static struct isl_map *read_disjuncts(struct isl_stream *s,
1030 struct vars *v, __isl_take isl_dim *dim);
1031
1032 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1033 struct vars *v, __isl_take isl_dim *dim)
1034 {
1035 isl_map *map;
1036
1037 if (isl_stream_eat_if_available(s, '(')) {
1038 map = read_disjuncts(s, v, dim);
1039 if (isl_stream_eat(s, ')'))
1040 goto error;
1041 return map;
1042 }
1043
1044 return read_constraint(s, v, dim);
1045 error:
1046 isl_map_free(map);
1047 return NULL;
1048 }
1049
1050 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1051 struct vars *v, __isl_take isl_dim *dim)
1052 {
1053 isl_map *map;
1054
1055 map = read_conjunct(s, v, isl_dim_copy(dim));
1056 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1057 isl_map *map_i;
1058
1059 map_i = read_conjunct(s, v, isl_dim_copy(dim));
1060 map = isl_map_intersect(map, map_i);
1061 }
1062
1063 isl_dim_free(dim);
1064 return map;
1065 }
1066
1067 static struct isl_map *read_disjuncts(struct isl_stream *s,
1068 struct vars *v, __isl_take isl_dim *dim)
1069 {
1070 struct isl_map *map;
1071
1072 if (isl_stream_next_token_is(s, '}'))
1073 return isl_map_universe(dim);
1074
1075 map = read_conjuncts(s, v, isl_dim_copy(dim));
1076 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1077 isl_map *map_i;
1078
1079 map_i = read_conjuncts(s, v, isl_dim_copy(dim));
1080 map = isl_map_union(map, map_i);
1081 }
1082
1083 isl_dim_free(dim);
1084 return map;
1085 }
1086
1087 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1088 {
1089 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1090 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1091 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1092 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1093
1094 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1095 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1096 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1097
1098 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1099 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1100 isl_basic_map_dim(bmap, isl_dim_in) +
1101 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1102 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1103
1104 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1105 return 1 + pos;
1106
1107 return 0;
1108 }
1109
1110 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1111 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1112 {
1113 int j;
1114 struct isl_token *tok;
1115 int type;
1116 int k;
1117 isl_int *c;
1118 unsigned nparam;
1119 unsigned dim;
1120
1121 if (!bmap)
1122 return NULL;
1123
1124 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1125 dim = isl_basic_map_dim(bmap, isl_dim_out);
1126
1127 tok = isl_stream_next_token(s);
1128 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1129 isl_stream_error(s, tok, "expecting coefficient");
1130 if (tok)
1131 isl_stream_push_token(s, tok);
1132 goto error;
1133 }
1134 if (!tok->on_new_line) {
1135 isl_stream_error(s, tok, "coefficient should appear on new line");
1136 isl_stream_push_token(s, tok);
1137 goto error;
1138 }
1139
1140 type = isl_int_get_si(tok->u.v);
1141 isl_token_free(tok);
1142
1143 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1144 if (type == 0) {
1145 k = isl_basic_map_alloc_equality(bmap);
1146 c = bmap->eq[k];
1147 } else {
1148 k = isl_basic_map_alloc_inequality(bmap);
1149 c = bmap->ineq[k];
1150 }
1151 if (k < 0)
1152 goto error;
1153
1154 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1155 int pos;
1156 tok = isl_stream_next_token(s);
1157 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1158 isl_stream_error(s, tok, "expecting coefficient");
1159 if (tok)
1160 isl_stream_push_token(s, tok);
1161 goto error;
1162 }
1163 if (tok->on_new_line) {
1164 isl_stream_error(s, tok,
1165 "coefficient should not appear on new line");
1166 isl_stream_push_token(s, tok);
1167 goto error;
1168 }
1169 pos = polylib_pos_to_isl_pos(bmap, j);
1170 isl_int_set(c[pos], tok->u.v);
1171 isl_token_free(tok);
1172 }
1173
1174 return bmap;
1175 error:
1176 isl_basic_map_free(bmap);
1177 return NULL;
1178 }
1179
1180 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1181 int nparam)
1182 {
1183 int i;
1184 struct isl_token *tok;
1185 struct isl_token *tok2;
1186 int n_row, n_col;
1187 int on_new_line;
1188 unsigned in = 0, out, local = 0;
1189 struct isl_basic_map *bmap = NULL;
1190
1191 if (nparam < 0)
1192 nparam = 0;
1193
1194 tok = isl_stream_next_token(s);
1195 if (!tok) {
1196 isl_stream_error(s, NULL, "unexpected EOF");
1197 return NULL;
1198 }
1199 tok2 = isl_stream_next_token(s);
1200 if (!tok2) {
1201 isl_token_free(tok);
1202 isl_stream_error(s, NULL, "unexpected EOF");
1203 return NULL;
1204 }
1205 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1206 isl_stream_push_token(s, tok2);
1207 isl_stream_push_token(s, tok);
1208 isl_stream_error(s, NULL,
1209 "expecting constraint matrix dimensions");
1210 return NULL;
1211 }
1212 n_row = isl_int_get_si(tok->u.v);
1213 n_col = isl_int_get_si(tok2->u.v);
1214 on_new_line = tok2->on_new_line;
1215 isl_token_free(tok2);
1216 isl_token_free(tok);
1217 isl_assert(s->ctx, !on_new_line, return NULL);
1218 isl_assert(s->ctx, n_row >= 0, return NULL);
1219 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1220 tok = isl_stream_next_token_on_same_line(s);
1221 if (tok) {
1222 if (tok->type != ISL_TOKEN_VALUE) {
1223 isl_stream_error(s, tok,
1224 "expecting number of output dimensions");
1225 isl_stream_push_token(s, tok);
1226 goto error;
1227 }
1228 out = isl_int_get_si(tok->u.v);
1229 isl_token_free(tok);
1230
1231 tok = isl_stream_next_token_on_same_line(s);
1232 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1233 isl_stream_error(s, tok,
1234 "expecting number of input dimensions");
1235 if (tok)
1236 isl_stream_push_token(s, tok);
1237 goto error;
1238 }
1239 in = isl_int_get_si(tok->u.v);
1240 isl_token_free(tok);
1241
1242 tok = isl_stream_next_token_on_same_line(s);
1243 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1244 isl_stream_error(s, tok,
1245 "expecting number of existentials");
1246 if (tok)
1247 isl_stream_push_token(s, tok);
1248 goto error;
1249 }
1250 local = isl_int_get_si(tok->u.v);
1251 isl_token_free(tok);
1252
1253 tok = isl_stream_next_token_on_same_line(s);
1254 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1255 isl_stream_error(s, tok,
1256 "expecting number of parameters");
1257 if (tok)
1258 isl_stream_push_token(s, tok);
1259 goto error;
1260 }
1261 nparam = isl_int_get_si(tok->u.v);
1262 isl_token_free(tok);
1263 if (n_col != 1 + out + in + local + nparam + 1) {
1264 isl_stream_error(s, NULL,
1265 "dimensions don't match");
1266 goto error;
1267 }
1268 } else
1269 out = n_col - 2 - nparam;
1270 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1271 if (!bmap)
1272 return NULL;
1273
1274 for (i = 0; i < local; ++i) {
1275 int k = isl_basic_map_alloc_div(bmap);
1276 if (k < 0)
1277 goto error;
1278 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1279 }
1280
1281 for (i = 0; i < n_row; ++i)
1282 bmap = basic_map_read_polylib_constraint(s, bmap);
1283
1284 tok = isl_stream_next_token_on_same_line(s);
1285 if (tok) {
1286 isl_stream_error(s, tok, "unexpected extra token on line");
1287 isl_stream_push_token(s, tok);
1288 goto error;
1289 }
1290
1291 bmap = isl_basic_map_simplify(bmap);
1292 bmap = isl_basic_map_finalize(bmap);
1293 return bmap;
1294 error:
1295 isl_basic_map_free(bmap);
1296 return NULL;
1297 }
1298
1299 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1300 {
1301 struct isl_token *tok;
1302 struct isl_token *tok2;
1303 int i, n;
1304 struct isl_map *map;
1305
1306 tok = isl_stream_next_token(s);
1307 if (!tok) {
1308 isl_stream_error(s, NULL, "unexpected EOF");
1309 return NULL;
1310 }
1311 tok2 = isl_stream_next_token_on_same_line(s);
1312 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1313 isl_stream_push_token(s, tok2);
1314 isl_stream_push_token(s, tok);
1315 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1316 }
1317 if (tok2) {
1318 isl_stream_error(s, tok2, "unexpected token");
1319 isl_stream_push_token(s, tok2);
1320 isl_stream_push_token(s, tok);
1321 return NULL;
1322 }
1323 n = isl_int_get_si(tok->u.v);
1324 isl_token_free(tok);
1325
1326 isl_assert(s->ctx, n >= 1, return NULL);
1327
1328 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1329
1330 for (i = 1; map && i < n; ++i)
1331 map = isl_map_union(map,
1332 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1333
1334 return map;
1335 }
1336
1337 static int optional_power(struct isl_stream *s)
1338 {
1339 int pow;
1340 struct isl_token *tok;
1341
1342 tok = isl_stream_next_token(s);
1343 if (!tok)
1344 return 1;
1345 if (tok->type != '^') {
1346 isl_stream_push_token(s, tok);
1347 return 1;
1348 }
1349 isl_token_free(tok);
1350 tok = isl_stream_next_token(s);
1351 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1352 isl_stream_error(s, tok, "expecting exponent");
1353 if (tok)
1354 isl_stream_push_token(s, tok);
1355 return 1;
1356 }
1357 pow = isl_int_get_si(tok->u.v);
1358 isl_token_free(tok);
1359 return pow;
1360 }
1361
1362 static __isl_give isl_div *read_div(struct isl_stream *s,
1363 __isl_take isl_dim *dim, struct vars *v)
1364 {
1365 int n;
1366 isl_basic_map *bmap;
1367
1368 n = v->n;
1369 bmap = isl_basic_map_universe(dim);
1370
1371 if (vars_add_anon(v) < 0)
1372 goto error;
1373 if (read_div_definition(s, v) < 0)
1374 goto error;
1375 bmap = add_divs(bmap, v);
1376 bmap = isl_basic_map_order_divs(bmap);
1377 if (!bmap)
1378 goto error;
1379 vars_drop(v, v->n - n);
1380
1381 return isl_basic_map_div(bmap, bmap->n_div - 1);
1382 error:
1383 isl_basic_map_free(bmap);
1384 return NULL;
1385 }
1386
1387 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1388 __isl_keep isl_basic_map *bmap, struct vars *v);
1389
1390 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1391 __isl_keep isl_basic_map *bmap, struct vars *v)
1392 {
1393 struct isl_qpolynomial *qp;
1394 struct isl_token *tok;
1395
1396 tok = isl_stream_next_token(s);
1397 if (!tok) {
1398 isl_stream_error(s, NULL, "unexpected EOF");
1399 return NULL;
1400 }
1401 if (tok->type == '(') {
1402 int pow;
1403
1404 isl_token_free(tok);
1405 qp = read_term(s, bmap, v);
1406 if (!qp)
1407 return NULL;
1408 if (isl_stream_eat(s, ')'))
1409 goto error;
1410 pow = optional_power(s);
1411 qp = isl_qpolynomial_pow(qp, pow);
1412 } else if (tok->type == ISL_TOKEN_VALUE) {
1413 struct isl_token *tok2;
1414 tok2 = isl_stream_next_token(s);
1415 if (tok2 && tok2->type == '/') {
1416 isl_token_free(tok2);
1417 tok2 = isl_stream_next_token(s);
1418 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1419 isl_stream_error(s, tok2, "expected denominator");
1420 isl_token_free(tok);
1421 isl_token_free(tok2);
1422 return NULL;
1423 }
1424 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1425 tok->u.v, tok2->u.v);
1426 isl_token_free(tok2);
1427 } else {
1428 isl_stream_push_token(s, tok2);
1429 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1430 tok->u.v);
1431 }
1432 isl_token_free(tok);
1433 } else if (tok->type == ISL_TOKEN_INFTY) {
1434 isl_token_free(tok);
1435 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1436 } else if (tok->type == ISL_TOKEN_NAN) {
1437 isl_token_free(tok);
1438 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1439 } else if (tok->type == ISL_TOKEN_IDENT) {
1440 int n = v->n;
1441 int pos = vars_pos(v, tok->u.s, -1);
1442 int pow;
1443 if (pos < 0) {
1444 isl_token_free(tok);
1445 return NULL;
1446 }
1447 if (pos >= n) {
1448 vars_drop(v, v->n - n);
1449 isl_stream_error(s, tok, "unknown identifier");
1450 isl_token_free(tok);
1451 return NULL;
1452 }
1453 isl_token_free(tok);
1454 pow = optional_power(s);
1455 qp = isl_qpolynomial_var_pow(isl_basic_map_get_dim(bmap), pos, pow);
1456 } else if (tok->type == '[') {
1457 isl_div *div;
1458 int pow;
1459
1460 isl_stream_push_token(s, tok);
1461 div = read_div(s, isl_basic_map_get_dim(bmap), v);
1462 pow = optional_power(s);
1463 qp = isl_qpolynomial_div_pow(div, pow);
1464 } else if (tok->type == '-') {
1465 struct isl_qpolynomial *qp2;
1466
1467 isl_token_free(tok);
1468 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1469 s->ctx->negone);
1470 qp2 = read_factor(s, bmap, v);
1471 qp = isl_qpolynomial_mul(qp, qp2);
1472 } else {
1473 isl_stream_error(s, tok, "unexpected isl_token");
1474 isl_stream_push_token(s, tok);
1475 return NULL;
1476 }
1477
1478 if (isl_stream_eat_if_available(s, '*') ||
1479 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1480 struct isl_qpolynomial *qp2;
1481
1482 qp2 = read_factor(s, bmap, v);
1483 qp = isl_qpolynomial_mul(qp, qp2);
1484 }
1485
1486 return qp;
1487 error:
1488 isl_qpolynomial_free(qp);
1489 return NULL;
1490 }
1491
1492 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1493 __isl_keep isl_basic_map *bmap, struct vars *v)
1494 {
1495 struct isl_token *tok;
1496 struct isl_qpolynomial *qp;
1497
1498 qp = read_factor(s, bmap, v);
1499
1500 for (;;) {
1501 tok = isl_stream_next_token(s);
1502 if (!tok)
1503 return qp;
1504
1505 if (tok->type == '+') {
1506 struct isl_qpolynomial *qp2;
1507
1508 isl_token_free(tok);
1509 qp2 = read_factor(s, bmap, v);
1510 qp = isl_qpolynomial_add(qp, qp2);
1511 } else if (tok->type == '-') {
1512 struct isl_qpolynomial *qp2;
1513
1514 isl_token_free(tok);
1515 qp2 = read_factor(s, bmap, v);
1516 qp = isl_qpolynomial_sub(qp, qp2);
1517 } else if (tok->type == ISL_TOKEN_VALUE &&
1518 isl_int_is_neg(tok->u.v)) {
1519 struct isl_qpolynomial *qp2;
1520
1521 isl_stream_push_token(s, tok);
1522 qp2 = read_factor(s, bmap, v);
1523 qp = isl_qpolynomial_add(qp, qp2);
1524 } else {
1525 isl_stream_push_token(s, tok);
1526 break;
1527 }
1528 }
1529
1530 return qp;
1531 }
1532
1533 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1534 __isl_take isl_basic_map *bmap, struct vars *v)
1535 {
1536 struct isl_token *tok;
1537 struct isl_map *map;
1538
1539 tok = isl_stream_next_token(s);
1540 if (!tok) {
1541 isl_stream_error(s, NULL, "unexpected EOF");
1542 goto error;
1543 }
1544 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1545 if (tok->type == ':') {
1546 isl_token_free(tok);
1547 map = isl_map_intersect(map,
1548 read_disjuncts(s, v, isl_basic_map_get_dim(bmap)));
1549 } else
1550 isl_stream_push_token(s, tok);
1551
1552 isl_basic_map_free(bmap);
1553
1554 return map;
1555 error:
1556 isl_basic_map_free(bmap);
1557 return NULL;
1558 }
1559
1560 static struct isl_obj obj_read_poly(struct isl_stream *s,
1561 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1562 {
1563 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1564 struct isl_pw_qpolynomial *pwqp;
1565 struct isl_qpolynomial *qp;
1566 struct isl_map *map;
1567 struct isl_set *set;
1568
1569 qp = read_term(s, bmap, v);
1570 map = read_optional_disjuncts(s, bmap, v);
1571 set = isl_map_range(map);
1572
1573 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1574
1575 vars_drop(v, v->n - n);
1576
1577 obj.v = pwqp;
1578 return obj;
1579 }
1580
1581 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1582 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1583 {
1584 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1585 struct isl_obj obj_p;
1586 isl_qpolynomial *qp;
1587 isl_qpolynomial_fold *fold = NULL;
1588 isl_pw_qpolynomial_fold *pwf;
1589 isl_map *map;
1590 isl_set *set;
1591
1592 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1593 return obj_read_poly(s, bmap, v, n);
1594
1595 if (isl_stream_eat(s, '('))
1596 goto error;
1597
1598 qp = read_term(s, bmap, v);
1599 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1600
1601 while (isl_stream_eat_if_available(s, ',')) {
1602 isl_qpolynomial_fold *fold_i;
1603 qp = read_term(s, bmap, v);
1604 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1605 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1606 }
1607
1608 if (isl_stream_eat(s, ')'))
1609 goto error;
1610
1611 map = read_optional_disjuncts(s, bmap, v);
1612 set = isl_map_range(map);
1613 pwf = isl_pw_qpolynomial_fold_alloc(isl_fold_max, set, fold);
1614
1615 vars_drop(v, v->n - n);
1616
1617 obj.v = pwf;
1618 return obj;
1619 error:
1620 isl_basic_map_free(bmap);
1621 isl_qpolynomial_fold_free(fold);
1622 obj.type = isl_obj_none;
1623 return obj;
1624 }
1625
1626 static struct isl_obj obj_read_body(struct isl_stream *s,
1627 __isl_take isl_basic_map *bmap, struct vars *v)
1628 {
1629 struct isl_map *map = NULL;
1630 struct isl_token *tok;
1631 struct isl_obj obj = { isl_obj_set, NULL };
1632 int n = v->n;
1633
1634 if (!next_is_tuple(s))
1635 return obj_read_poly_or_fold(s, bmap, v, n);
1636
1637 bmap = read_tuple(s, bmap, isl_dim_in, v);
1638 if (!bmap)
1639 goto error;
1640 tok = isl_stream_next_token(s);
1641 if (tok && tok->type == ISL_TOKEN_TO) {
1642 obj.type = isl_obj_map;
1643 isl_token_free(tok);
1644 if (!next_is_tuple(s)) {
1645 bmap = isl_basic_map_reverse(bmap);
1646 return obj_read_poly_or_fold(s, bmap, v, n);
1647 }
1648 bmap = read_tuple(s, bmap, isl_dim_out, v);
1649 if (!bmap)
1650 goto error;
1651 } else {
1652 bmap = isl_basic_map_reverse(bmap);
1653 if (tok)
1654 isl_stream_push_token(s, tok);
1655 }
1656
1657 map = read_optional_disjuncts(s, bmap, v);
1658
1659 vars_drop(v, v->n - n);
1660
1661 obj.v = map;
1662 return obj;
1663 error:
1664 isl_basic_map_free(bmap);
1665 obj.type = isl_obj_none;
1666 return obj;
1667 }
1668
1669 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1670 {
1671 if (obj.type == isl_obj_map) {
1672 obj.v = isl_union_map_from_map(obj.v);
1673 obj.type = isl_obj_union_map;
1674 } else if (obj.type == isl_obj_set) {
1675 obj.v = isl_union_set_from_set(obj.v);
1676 obj.type = isl_obj_union_set;
1677 } else if (obj.type == isl_obj_pw_qpolynomial) {
1678 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1679 obj.type = isl_obj_union_pw_qpolynomial;
1680 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1681 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1682 obj.type = isl_obj_union_pw_qpolynomial_fold;
1683 } else
1684 isl_assert(ctx, 0, goto error);
1685 return obj;
1686 error:
1687 obj.type->free(obj.v);
1688 obj.type = isl_obj_none;
1689 return obj;
1690 }
1691
1692 static struct isl_obj obj_add(struct isl_ctx *ctx,
1693 struct isl_obj obj1, struct isl_obj obj2)
1694 {
1695 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1696 obj1 = to_union(ctx, obj1);
1697 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1698 obj2 = to_union(ctx, obj2);
1699 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1700 obj1 = to_union(ctx, obj1);
1701 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1702 obj2 = to_union(ctx, obj2);
1703 if (obj1.type == isl_obj_pw_qpolynomial &&
1704 obj2.type == isl_obj_union_pw_qpolynomial)
1705 obj1 = to_union(ctx, obj1);
1706 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1707 obj2.type == isl_obj_pw_qpolynomial)
1708 obj2 = to_union(ctx, obj2);
1709 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1710 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1711 obj1 = to_union(ctx, obj1);
1712 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1713 obj2.type == isl_obj_pw_qpolynomial_fold)
1714 obj2 = to_union(ctx, obj2);
1715 isl_assert(ctx, obj1.type == obj2.type, goto error);
1716 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
1717 obj1 = to_union(ctx, obj1);
1718 obj2 = to_union(ctx, obj2);
1719 }
1720 if (obj1.type == isl_obj_set && !isl_set_has_equal_dim(obj1.v, obj2.v)) {
1721 obj1 = to_union(ctx, obj1);
1722 obj2 = to_union(ctx, obj2);
1723 }
1724 if (obj1.type == isl_obj_pw_qpolynomial &&
1725 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
1726 obj1 = to_union(ctx, obj1);
1727 obj2 = to_union(ctx, obj2);
1728 }
1729 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1730 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
1731 obj1 = to_union(ctx, obj1);
1732 obj2 = to_union(ctx, obj2);
1733 }
1734 obj1.v = obj1.type->add(obj1.v, obj2.v);
1735 return obj1;
1736 error:
1737 obj1.type->free(obj1.v);
1738 obj2.type->free(obj2.v);
1739 obj1.type = isl_obj_none;
1740 obj1.v = NULL;
1741 return obj1;
1742 }
1743
1744 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1745 {
1746 isl_basic_map *bmap = NULL;
1747 struct isl_token *tok;
1748 struct vars *v = NULL;
1749 struct isl_obj obj = { isl_obj_set, NULL };
1750
1751 tok = isl_stream_next_token(s);
1752 if (!tok) {
1753 isl_stream_error(s, NULL, "unexpected EOF");
1754 goto error;
1755 }
1756 if (tok->type == ISL_TOKEN_VALUE) {
1757 struct isl_token *tok2;
1758 struct isl_map *map;
1759
1760 tok2 = isl_stream_next_token(s);
1761 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
1762 isl_int_is_neg(tok2->u.v)) {
1763 if (tok2)
1764 isl_stream_push_token(s, tok2);
1765 obj.type = isl_obj_int;
1766 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
1767 isl_token_free(tok);
1768 return obj;
1769 }
1770 isl_stream_push_token(s, tok2);
1771 isl_stream_push_token(s, tok);
1772 map = map_read_polylib(s, nparam);
1773 if (!map)
1774 goto error;
1775 if (isl_map_dim(map, isl_dim_in) > 0)
1776 obj.type = isl_obj_map;
1777 obj.v = map;
1778 return obj;
1779 }
1780 v = vars_new(s->ctx);
1781 if (!v) {
1782 isl_stream_push_token(s, tok);
1783 goto error;
1784 }
1785 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
1786 if (tok->type == '[') {
1787 isl_stream_push_token(s, tok);
1788 bmap = read_tuple(s, bmap, isl_dim_param, v);
1789 if (!bmap)
1790 goto error;
1791 if (nparam >= 0)
1792 isl_assert(s->ctx, nparam == v->n, goto error);
1793 tok = isl_stream_next_token(s);
1794 if (!tok || tok->type != ISL_TOKEN_TO) {
1795 isl_stream_error(s, tok, "expecting '->'");
1796 if (tok)
1797 isl_stream_push_token(s, tok);
1798 goto error;
1799 }
1800 isl_token_free(tok);
1801 tok = isl_stream_next_token(s);
1802 } else if (nparam > 0)
1803 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
1804 if (!tok || tok->type != '{') {
1805 isl_stream_error(s, tok, "expecting '{'");
1806 if (tok)
1807 isl_stream_push_token(s, tok);
1808 goto error;
1809 }
1810 isl_token_free(tok);
1811
1812 tok = isl_stream_next_token(s);
1813 if (!tok)
1814 ;
1815 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1816 isl_token_free(tok);
1817 if (isl_stream_eat(s, '='))
1818 goto error;
1819 bmap = read_tuple(s, bmap, isl_dim_param, v);
1820 if (!bmap)
1821 goto error;
1822 if (nparam >= 0)
1823 isl_assert(s->ctx, nparam == v->n, goto error);
1824 } else if (tok->type == '}') {
1825 obj.type = isl_obj_union_set;
1826 obj.v = isl_union_set_empty(isl_basic_map_get_dim(bmap));
1827 isl_token_free(tok);
1828 goto done;
1829 } else
1830 isl_stream_push_token(s, tok);
1831
1832 for (;;) {
1833 struct isl_obj o;
1834 tok = NULL;
1835 o = obj_read_body(s, isl_basic_map_copy(bmap), v);
1836 if (o.type == isl_obj_none || !o.v)
1837 goto error;
1838 if (!obj.v)
1839 obj = o;
1840 else {
1841 obj = obj_add(s->ctx, obj, o);
1842 if (obj.type == isl_obj_none || !obj.v)
1843 goto error;
1844 }
1845 tok = isl_stream_next_token(s);
1846 if (!tok || tok->type != ';')
1847 break;
1848 isl_token_free(tok);
1849 }
1850
1851 if (tok && tok->type == '}') {
1852 isl_token_free(tok);
1853 } else {
1854 isl_stream_error(s, tok, "unexpected isl_token");
1855 if (tok)
1856 isl_token_free(tok);
1857 goto error;
1858 }
1859 done:
1860 vars_free(v);
1861 isl_basic_map_free(bmap);
1862
1863 return obj;
1864 error:
1865 isl_basic_map_free(bmap);
1866 obj.type->free(obj.v);
1867 if (v)
1868 vars_free(v);
1869 obj.v = NULL;
1870 return obj;
1871 }
1872
1873 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1874 {
1875 return obj_read(s, -1);
1876 }
1877
1878 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
1879 {
1880 struct isl_obj obj;
1881 struct isl_map *map;
1882
1883 obj = obj_read(s, nparam);
1884 if (obj.v)
1885 isl_assert(s->ctx, obj.type == isl_obj_map ||
1886 obj.type == isl_obj_set, goto error);
1887
1888 return obj.v;
1889 error:
1890 obj.type->free(obj.v);
1891 return NULL;
1892 }
1893
1894 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
1895 {
1896 struct isl_obj obj;
1897 struct isl_set *set;
1898
1899 obj = obj_read(s, nparam);
1900 if (obj.v)
1901 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
1902
1903 return obj.v;
1904 error:
1905 obj.type->free(obj.v);
1906 return NULL;
1907 }
1908
1909 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
1910 {
1911 struct isl_obj obj;
1912 isl_union_map *umap;
1913
1914 obj = obj_read(s, -1);
1915 if (obj.type == isl_obj_map) {
1916 obj.type = isl_obj_union_map;
1917 obj.v = isl_union_map_from_map(obj.v);
1918 }
1919 if (obj.type == isl_obj_set) {
1920 obj.type = isl_obj_union_set;
1921 obj.v = isl_union_set_from_set(obj.v);
1922 }
1923 if (obj.v)
1924 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
1925 obj.type == isl_obj_union_set, goto error);
1926
1927 return obj.v;
1928 error:
1929 obj.type->free(obj.v);
1930 return NULL;
1931 }
1932
1933 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
1934 {
1935 struct isl_obj obj;
1936 isl_union_set *uset;
1937
1938 obj = obj_read(s, -1);
1939 if (obj.type == isl_obj_set) {
1940 obj.type = isl_obj_union_set;
1941 obj.v = isl_union_set_from_set(obj.v);
1942 }
1943 if (obj.v)
1944 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
1945
1946 return obj.v;
1947 error:
1948 obj.type->free(obj.v);
1949 return NULL;
1950 }
1951
1952 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
1953 {
1954 struct isl_obj obj;
1955 struct isl_map *map;
1956 struct isl_basic_map *bmap;
1957
1958 obj = obj_read(s, nparam);
1959 map = obj.v;
1960 if (!map)
1961 return NULL;
1962
1963 isl_assert(map->ctx, map->n <= 1, goto error);
1964
1965 if (map->n == 0)
1966 bmap = isl_basic_map_empty_like_map(map);
1967 else
1968 bmap = isl_basic_map_copy(map->p[0]);
1969
1970 isl_map_free(map);
1971
1972 return bmap;
1973 error:
1974 isl_map_free(map);
1975 return NULL;
1976 }
1977
1978 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
1979 FILE *input, int nparam)
1980 {
1981 struct isl_basic_map *bmap;
1982 struct isl_stream *s = isl_stream_new_file(ctx, input);
1983 if (!s)
1984 return NULL;
1985 bmap = basic_map_read(s, nparam);
1986 isl_stream_free(s);
1987 return bmap;
1988 }
1989
1990 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
1991 FILE *input, int nparam)
1992 {
1993 struct isl_basic_map *bmap;
1994 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
1995 if (!bmap)
1996 return NULL;
1997 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1998 return (struct isl_basic_set *)bmap;
1999 error:
2000 isl_basic_map_free(bmap);
2001 return NULL;
2002 }
2003
2004 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2005 const char *str, int nparam)
2006 {
2007 struct isl_basic_map *bmap;
2008 struct isl_stream *s = isl_stream_new_str(ctx, str);
2009 if (!s)
2010 return NULL;
2011 bmap = basic_map_read(s, nparam);
2012 isl_stream_free(s);
2013 return bmap;
2014 }
2015
2016 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2017 const char *str, int nparam)
2018 {
2019 struct isl_basic_map *bmap;
2020 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
2021 if (!bmap)
2022 return NULL;
2023 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2024 return (struct isl_basic_set *)bmap;
2025 error:
2026 isl_basic_map_free(bmap);
2027 return NULL;
2028 }
2029
2030 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2031 FILE *input, int nparam)
2032 {
2033 struct isl_map *map;
2034 struct isl_stream *s = isl_stream_new_file(ctx, input);
2035 if (!s)
2036 return NULL;
2037 map = isl_stream_read_map(s, nparam);
2038 isl_stream_free(s);
2039 return map;
2040 }
2041
2042 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2043 const char *str, int nparam)
2044 {
2045 struct isl_map *map;
2046 struct isl_stream *s = isl_stream_new_str(ctx, str);
2047 if (!s)
2048 return NULL;
2049 map = isl_stream_read_map(s, nparam);
2050 isl_stream_free(s);
2051 return map;
2052 }
2053
2054 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2055 FILE *input, int nparam)
2056 {
2057 struct isl_map *map;
2058 map = isl_map_read_from_file(ctx, input, nparam);
2059 if (!map)
2060 return NULL;
2061 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2062 return (struct isl_set *)map;
2063 error:
2064 isl_map_free(map);
2065 return NULL;
2066 }
2067
2068 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2069 const char *str, int nparam)
2070 {
2071 struct isl_map *map;
2072 map = isl_map_read_from_str(ctx, str, nparam);
2073 if (!map)
2074 return NULL;
2075 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2076 return (struct isl_set *)map;
2077 error:
2078 isl_map_free(map);
2079 return NULL;
2080 }
2081
2082 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2083 const char *str)
2084 {
2085 isl_union_map *umap;
2086 struct isl_stream *s = isl_stream_new_str(ctx, str);
2087 if (!s)
2088 return NULL;
2089 umap = isl_stream_read_union_map(s);
2090 isl_stream_free(s);
2091 return umap;
2092 }
2093
2094 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2095 const char *str)
2096 {
2097 isl_union_set *uset;
2098 struct isl_stream *s = isl_stream_new_str(ctx, str);
2099 if (!s)
2100 return NULL;
2101 uset = isl_stream_read_union_set(s);
2102 isl_stream_free(s);
2103 return uset;
2104 }
2105
2106 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2107 {
2108 struct isl_vec *vec = NULL;
2109 struct isl_token *tok;
2110 unsigned size;
2111 int j;
2112
2113 tok = isl_stream_next_token(s);
2114 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2115 isl_stream_error(s, tok, "expecting vector length");
2116 goto error;
2117 }
2118
2119 size = isl_int_get_si(tok->u.v);
2120 isl_token_free(tok);
2121
2122 vec = isl_vec_alloc(s->ctx, size);
2123
2124 for (j = 0; j < size; ++j) {
2125 tok = isl_stream_next_token(s);
2126 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2127 isl_stream_error(s, tok, "expecting constant value");
2128 goto error;
2129 }
2130 isl_int_set(vec->el[j], tok->u.v);
2131 isl_token_free(tok);
2132 }
2133
2134 return vec;
2135 error:
2136 isl_token_free(tok);
2137 isl_vec_free(vec);
2138 return NULL;
2139 }
2140
2141 static __isl_give isl_vec *vec_read(struct isl_stream *s,
2142 unsigned input_format)
2143 {
2144 if (input_format == ISL_FORMAT_POLYLIB)
2145 return isl_vec_read_polylib(s);
2146 isl_assert(s->ctx, 0, return NULL);
2147 }
2148
2149 struct isl_vec *isl_vec_read_from_file(struct isl_ctx *ctx,
2150 FILE *input, unsigned input_format)
2151 {
2152 isl_vec *v;
2153 struct isl_stream *s = isl_stream_new_file(ctx, input);
2154 if (!s)
2155 return NULL;
2156 v = vec_read(s, input_format);
2157 isl_stream_free(s);
2158 return v;
2159 }
2160
2161 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2162 struct isl_stream *s)
2163 {
2164 struct isl_obj obj;
2165 struct isl_pw_qpolynomial *pwqp;
2166
2167 obj = obj_read(s, -1);
2168 if (obj.v)
2169 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2170 goto error);
2171
2172 return obj.v;
2173 error:
2174 obj.type->free(obj.v);
2175 return NULL;
2176 }
2177
2178 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2179 const char *str)
2180 {
2181 isl_pw_qpolynomial *pwqp;
2182 struct isl_stream *s = isl_stream_new_str(ctx, str);
2183 if (!s)
2184 return NULL;
2185 pwqp = isl_stream_read_pw_qpolynomial(s);
2186 isl_stream_free(s);
2187 return pwqp;
2188 }
Integer set library