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isl_stream_read_map: accept 'true' and 'false' constraints
[isl.git] / isl_input.c
blobed211401241fec21599895a5ce8fa7df5bd479d8
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 pos)
636 {
637 struct variable *var = v->v;
638 unsigned o_out = isl_basic_map_offset(bmap, isl_dim_out) - 1;
639
640 if (read_div_definition(s, v) < 0)
641 goto error;
642
643 if (isl_basic_map_add_div_constraints_var(bmap, o_out + pos,
644 var->def->el) < 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 p;
660 int n = v->n;
661 unsigned n_out = isl_basic_map_dim(bmap, isl_dim_out);
662
663 if (tok->type != ISL_TOKEN_IDENT)
664 break;
665
666 p = vars_pos(v, tok->u.s, -1);
667 if (p < 0)
668 goto error;
669 if (p < n) {
670 isl_stream_error(s, tok, "expecting unique identifier");
671 goto error;
672 }
673
674 bmap = isl_basic_map_cow(bmap);
675 bmap = isl_basic_map_add(bmap, isl_dim_out, 1);
676 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
677 0, 0, 2);
678
679 isl_token_free(tok);
680 tok = isl_stream_next_token(s);
681 if (tok && tok->type == '=') {
682 isl_token_free(tok);
683 bmap = add_div_definition(s, v, bmap, n_out);
684 tok = isl_stream_next_token(s);
685 }
686
687 if (!tok || tok->type != ',')
688 break;
689
690 isl_token_free(tok);
691 }
692 if (tok)
693 isl_stream_push_token(s, tok);
694
695 return bmap;
696 error:
697 isl_token_free(tok);
698 isl_basic_map_free(bmap);
699 return NULL;
700 }
701
702 static int next_is_tuple(struct isl_stream *s)
703 {
704 struct isl_token *tok;
705 int is_tuple;
706
707 tok = isl_stream_next_token(s);
708 if (!tok)
709 return 0;
710 if (tok->type == '[') {
711 isl_stream_push_token(s, tok);
712 return 1;
713 }
714 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
715 isl_stream_push_token(s, tok);
716 return 0;
717 }
718
719 is_tuple = isl_stream_next_token_is(s, '[');
720
721 isl_stream_push_token(s, tok);
722
723 return is_tuple;
724 }
725
726 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
727 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v);
728
729 static __isl_give isl_basic_map *read_nested_tuple(struct isl_stream *s,
730 __isl_take isl_basic_map *bmap, struct vars *v)
731 {
732 bmap = read_tuple(s, bmap, isl_dim_in, v);
733 if (isl_stream_eat(s, ISL_TOKEN_TO))
734 goto error;
735 bmap = read_tuple(s, bmap, isl_dim_out, v);
736 bmap = isl_basic_map_from_range(isl_basic_map_wrap(bmap));
737 return bmap;
738 error:
739 isl_basic_map_free(bmap);
740 return NULL;
741 }
742
743 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
744 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
745 {
746 struct isl_token *tok;
747 char *name = NULL;
748
749 tok = isl_stream_next_token(s);
750 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
751 name = strdup(tok->u.s);
752 if (!name)
753 goto error;
754 isl_token_free(tok);
755 tok = isl_stream_next_token(s);
756 }
757 if (!tok || tok->type != '[') {
758 isl_stream_error(s, tok, "expecting '['");
759 goto error;
760 }
761 isl_token_free(tok);
762 if (type != isl_dim_param && next_is_tuple(s)) {
763 isl_dim *dim = isl_basic_map_get_dim(bmap);
764 int nparam = isl_dim_size(dim, isl_dim_param);
765 int n_in = isl_dim_size(dim, isl_dim_in);
766 isl_basic_map *nested;
767 if (type == isl_dim_out)
768 dim = isl_dim_move(dim, isl_dim_param, nparam,
769 isl_dim_in, 0, n_in);
770 nested = isl_basic_map_alloc_dim(dim, 0, 0, 0);
771 nested = read_nested_tuple(s, nested, v);
772 if (type == isl_dim_in) {
773 nested = isl_basic_map_reverse(nested);
774 bmap = isl_basic_map_intersect(nested, bmap);
775 } else {
776 isl_basic_set *bset;
777 dim = isl_dim_range(isl_basic_map_get_dim(nested));
778 dim = isl_dim_drop(dim, isl_dim_param, nparam, n_in);
779 dim = isl_dim_join(isl_basic_map_get_dim(bmap), dim);
780 bset = isl_basic_map_domain(bmap);
781 nested = isl_basic_map_reset_dim(nested, dim);
782 bmap = isl_basic_map_intersect_domain(nested, bset);
783 }
784 } else
785 bmap = read_var_list(s, bmap, type, v);
786 tok = isl_stream_next_token(s);
787 if (!tok || tok->type != ']') {
788 isl_stream_error(s, tok, "expecting ']'");
789 goto error;
790 }
791 isl_token_free(tok);
792
793 if (name) {
794 bmap = isl_basic_map_set_tuple_name(bmap, type, name);
795 free(name);
796 }
797
798 return bmap;
799 error:
800 if (tok)
801 isl_token_free(tok);
802 isl_basic_map_free(bmap);
803 return NULL;
804 }
805
806 static __isl_give isl_basic_map *construct_constraint(
807 __isl_take isl_basic_map *bmap, enum isl_token_type type,
808 isl_int *left, isl_int *right)
809 {
810 int k;
811 unsigned len;
812 struct isl_ctx *ctx;
813
814 if (!bmap)
815 return NULL;
816 len = 1 + isl_basic_map_total_dim(bmap);
817 ctx = bmap->ctx;
818
819 k = isl_basic_map_alloc_inequality(bmap);
820 if (k < 0)
821 goto error;
822 if (type == ISL_TOKEN_LE)
823 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
824 ctx->one, right,
825 len);
826 else if (type == ISL_TOKEN_GE)
827 isl_seq_combine(bmap->ineq[k], ctx->one, left,
828 ctx->negone, right,
829 len);
830 else if (type == ISL_TOKEN_LT) {
831 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
832 ctx->one, right,
833 len);
834 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
835 } else if (type == ISL_TOKEN_GT) {
836 isl_seq_combine(bmap->ineq[k], ctx->one, left,
837 ctx->negone, right,
838 len);
839 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
840 } else {
841 isl_seq_combine(bmap->ineq[k], ctx->one, left,
842 ctx->negone, right,
843 len);
844 isl_basic_map_inequality_to_equality(bmap, k);
845 }
846
847 return bmap;
848 error:
849 isl_basic_map_free(bmap);
850 return NULL;
851 }
852
853 static int is_comparator(struct isl_token *tok)
854 {
855 if (!tok)
856 return 0;
857
858 switch (tok->type) {
859 case ISL_TOKEN_LT:
860 case ISL_TOKEN_GT:
861 case ISL_TOKEN_LE:
862 case ISL_TOKEN_GE:
863 case '=':
864 return 1;
865 default:
866 return 0;
867 }
868 }
869
870 static struct isl_basic_map *add_constraint(struct isl_stream *s,
871 struct vars *v, struct isl_basic_map *bmap)
872 {
873 int i, j;
874 struct isl_token *tok = NULL;
875 struct isl_mat *aff1 = NULL, *aff2 = NULL;
876
877 bmap = isl_basic_map_cow(bmap);
878
879 aff1 = accept_affine_list(s, v);
880 if (!aff1)
881 goto error;
882 tok = isl_stream_next_token(s);
883 if (!is_comparator(tok)) {
884 isl_stream_error(s, tok, "missing operator");
885 if (tok)
886 isl_stream_push_token(s, tok);
887 tok = NULL;
888 goto error;
889 }
890 for (;;) {
891 aff2 = accept_affine_list(s, v);
892 if (!aff2)
893 goto error;
894
895 aff1 = isl_mat_add_zero_cols(aff1, aff2->n_col - aff1->n_col);
896 if (!aff1)
897 goto error;
898 bmap = add_divs(bmap, v);
899 bmap = isl_basic_map_extend_constraints(bmap, 0,
900 aff1->n_row * aff2->n_row);
901 for (i = 0; i < aff1->n_row; ++i)
902 for (j = 0; j < aff2->n_row; ++j)
903 bmap = construct_constraint(bmap, tok->type,
904 aff1->row[i], aff2->row[j]);
905 isl_token_free(tok);
906 isl_mat_free(aff1);
907 aff1 = aff2;
908
909 tok = isl_stream_next_token(s);
910 if (!is_comparator(tok)) {
911 if (tok)
912 isl_stream_push_token(s, tok);
913 break;
914 }
915 }
916 isl_mat_free(aff1);
917
918 return bmap;
919 error:
920 if (tok)
921 isl_token_free(tok);
922 isl_mat_free(aff1);
923 isl_mat_free(aff2);
924 isl_basic_map_free(bmap);
925 return NULL;
926 }
927
928 static isl_map *read_constraint(struct isl_stream *s,
929 struct vars *v, __isl_take isl_basic_map *bmap)
930 {
931 int n = v->n;
932
933 if (!bmap)
934 return NULL;
935
936 bmap = add_constraint(s, v, bmap);
937 bmap = isl_basic_map_simplify(bmap);
938 bmap = isl_basic_map_finalize(bmap);
939
940 vars_drop(v, v->n - n);
941
942 return isl_map_from_basic_map(bmap);
943 error:
944 isl_basic_map_free(bmap);
945 return NULL;
946 }
947
948 static struct isl_map *read_disjuncts(struct isl_stream *s,
949 struct vars *v, __isl_take isl_basic_map *bmap);
950
951 static __isl_give isl_map *read_exists(struct isl_stream *s,
952 struct vars *v, __isl_take isl_basic_map *bmap)
953 {
954 int n = v->n;
955 int seen_paren = isl_stream_eat_if_available(s, '(');
956 isl_map *map = NULL;
957
958 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
959 bmap = read_defined_var_list(s, v, bmap);
960
961 if (isl_stream_eat(s, ':'))
962 goto error;
963
964 map = read_disjuncts(s, v, bmap);
965 map = isl_set_unwrap(isl_map_domain(map));
966 bmap = NULL;
967
968 vars_drop(v, v->n - n);
969 if (seen_paren && isl_stream_eat(s, ')'))
970 goto error;
971
972 return map;
973 error:
974 isl_basic_map_free(bmap);
975 isl_map_free(map);
976 return NULL;
977 }
978
979 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
980 struct vars *v, __isl_take isl_basic_map *bmap)
981 {
982 isl_map *map;
983
984 if (isl_stream_eat_if_available(s, '(')) {
985 map = read_disjuncts(s, v, bmap);
986 if (isl_stream_eat(s, ')'))
987 goto error;
988 return map;
989 }
990
991 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
992 return read_exists(s, v, bmap);
993
994 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
995 return isl_map_from_basic_map(bmap);
996
997 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
998 isl_dim *dim = isl_basic_map_get_dim(bmap);
999 isl_basic_map_free(bmap);
1000 return isl_map_empty(dim);
1001 }
1002
1003 return read_constraint(s, v, bmap);
1004 error:
1005 isl_map_free(map);
1006 return NULL;
1007 }
1008
1009 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1010 struct vars *v, __isl_take isl_basic_map *bmap)
1011 {
1012 isl_map *map;
1013 int negate;
1014
1015 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1016 map = read_conjunct(s, v, isl_basic_map_copy(bmap));
1017 if (negate) {
1018 isl_map *t;
1019 t = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1020 map = isl_map_subtract(t, map);
1021 }
1022
1023 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1024 isl_map *map_i;
1025
1026 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1027 map_i = read_conjunct(s, v, isl_basic_map_copy(bmap));
1028 if (negate)
1029 map = isl_map_subtract(map, map_i);
1030 else
1031 map = isl_map_intersect(map, map_i);
1032 }
1033
1034 isl_basic_map_free(bmap);
1035 return map;
1036 }
1037
1038 static struct isl_map *read_disjuncts(struct isl_stream *s,
1039 struct vars *v, __isl_take isl_basic_map *bmap)
1040 {
1041 struct isl_map *map;
1042
1043 if (isl_stream_next_token_is(s, '}')) {
1044 isl_dim *dim = isl_basic_map_get_dim(bmap);
1045 isl_basic_map_free(bmap);
1046 return isl_map_universe(dim);
1047 }
1048
1049 map = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1050 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1051 isl_map *map_i;
1052
1053 map_i = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1054 map = isl_map_union(map, map_i);
1055 }
1056
1057 isl_basic_map_free(bmap);
1058 return map;
1059 }
1060
1061 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1062 {
1063 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1064 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1065 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1066 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1067
1068 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1069 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1070 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1071
1072 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1073 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1074 isl_basic_map_dim(bmap, isl_dim_in) +
1075 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1076 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1077
1078 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1079 return 1 + pos;
1080
1081 return 0;
1082 }
1083
1084 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1085 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1086 {
1087 int j;
1088 struct isl_token *tok;
1089 int type;
1090 int k;
1091 isl_int *c;
1092 unsigned nparam;
1093 unsigned dim;
1094
1095 if (!bmap)
1096 return NULL;
1097
1098 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1099 dim = isl_basic_map_dim(bmap, isl_dim_out);
1100
1101 tok = isl_stream_next_token(s);
1102 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1103 isl_stream_error(s, tok, "expecting coefficient");
1104 if (tok)
1105 isl_stream_push_token(s, tok);
1106 goto error;
1107 }
1108 if (!tok->on_new_line) {
1109 isl_stream_error(s, tok, "coefficient should appear on new line");
1110 isl_stream_push_token(s, tok);
1111 goto error;
1112 }
1113
1114 type = isl_int_get_si(tok->u.v);
1115 isl_token_free(tok);
1116
1117 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1118 if (type == 0) {
1119 k = isl_basic_map_alloc_equality(bmap);
1120 c = bmap->eq[k];
1121 } else {
1122 k = isl_basic_map_alloc_inequality(bmap);
1123 c = bmap->ineq[k];
1124 }
1125 if (k < 0)
1126 goto error;
1127
1128 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1129 int pos;
1130 tok = isl_stream_next_token(s);
1131 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1132 isl_stream_error(s, tok, "expecting coefficient");
1133 if (tok)
1134 isl_stream_push_token(s, tok);
1135 goto error;
1136 }
1137 if (tok->on_new_line) {
1138 isl_stream_error(s, tok,
1139 "coefficient should not appear on new line");
1140 isl_stream_push_token(s, tok);
1141 goto error;
1142 }
1143 pos = polylib_pos_to_isl_pos(bmap, j);
1144 isl_int_set(c[pos], tok->u.v);
1145 isl_token_free(tok);
1146 }
1147
1148 return bmap;
1149 error:
1150 isl_basic_map_free(bmap);
1151 return NULL;
1152 }
1153
1154 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1155 int nparam)
1156 {
1157 int i;
1158 struct isl_token *tok;
1159 struct isl_token *tok2;
1160 int n_row, n_col;
1161 int on_new_line;
1162 unsigned in = 0, out, local = 0;
1163 struct isl_basic_map *bmap = NULL;
1164
1165 if (nparam < 0)
1166 nparam = 0;
1167
1168 tok = isl_stream_next_token(s);
1169 if (!tok) {
1170 isl_stream_error(s, NULL, "unexpected EOF");
1171 return NULL;
1172 }
1173 tok2 = isl_stream_next_token(s);
1174 if (!tok2) {
1175 isl_token_free(tok);
1176 isl_stream_error(s, NULL, "unexpected EOF");
1177 return NULL;
1178 }
1179 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1180 isl_stream_push_token(s, tok2);
1181 isl_stream_push_token(s, tok);
1182 isl_stream_error(s, NULL,
1183 "expecting constraint matrix dimensions");
1184 return NULL;
1185 }
1186 n_row = isl_int_get_si(tok->u.v);
1187 n_col = isl_int_get_si(tok2->u.v);
1188 on_new_line = tok2->on_new_line;
1189 isl_token_free(tok2);
1190 isl_token_free(tok);
1191 isl_assert(s->ctx, !on_new_line, return NULL);
1192 isl_assert(s->ctx, n_row >= 0, return NULL);
1193 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1194 tok = isl_stream_next_token_on_same_line(s);
1195 if (tok) {
1196 if (tok->type != ISL_TOKEN_VALUE) {
1197 isl_stream_error(s, tok,
1198 "expecting number of output dimensions");
1199 isl_stream_push_token(s, tok);
1200 goto error;
1201 }
1202 out = isl_int_get_si(tok->u.v);
1203 isl_token_free(tok);
1204
1205 tok = isl_stream_next_token_on_same_line(s);
1206 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1207 isl_stream_error(s, tok,
1208 "expecting number of input dimensions");
1209 if (tok)
1210 isl_stream_push_token(s, tok);
1211 goto error;
1212 }
1213 in = isl_int_get_si(tok->u.v);
1214 isl_token_free(tok);
1215
1216 tok = isl_stream_next_token_on_same_line(s);
1217 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1218 isl_stream_error(s, tok,
1219 "expecting number of existentials");
1220 if (tok)
1221 isl_stream_push_token(s, tok);
1222 goto error;
1223 }
1224 local = isl_int_get_si(tok->u.v);
1225 isl_token_free(tok);
1226
1227 tok = isl_stream_next_token_on_same_line(s);
1228 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1229 isl_stream_error(s, tok,
1230 "expecting number of parameters");
1231 if (tok)
1232 isl_stream_push_token(s, tok);
1233 goto error;
1234 }
1235 nparam = isl_int_get_si(tok->u.v);
1236 isl_token_free(tok);
1237 if (n_col != 1 + out + in + local + nparam + 1) {
1238 isl_stream_error(s, NULL,
1239 "dimensions don't match");
1240 goto error;
1241 }
1242 } else
1243 out = n_col - 2 - nparam;
1244 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1245 if (!bmap)
1246 return NULL;
1247
1248 for (i = 0; i < local; ++i) {
1249 int k = isl_basic_map_alloc_div(bmap);
1250 if (k < 0)
1251 goto error;
1252 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1253 }
1254
1255 for (i = 0; i < n_row; ++i)
1256 bmap = basic_map_read_polylib_constraint(s, bmap);
1257
1258 tok = isl_stream_next_token_on_same_line(s);
1259 if (tok) {
1260 isl_stream_error(s, tok, "unexpected extra token on line");
1261 isl_stream_push_token(s, tok);
1262 goto error;
1263 }
1264
1265 bmap = isl_basic_map_simplify(bmap);
1266 bmap = isl_basic_map_finalize(bmap);
1267 return bmap;
1268 error:
1269 isl_basic_map_free(bmap);
1270 return NULL;
1271 }
1272
1273 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1274 {
1275 struct isl_token *tok;
1276 struct isl_token *tok2;
1277 int i, n;
1278 struct isl_map *map;
1279
1280 tok = isl_stream_next_token(s);
1281 if (!tok) {
1282 isl_stream_error(s, NULL, "unexpected EOF");
1283 return NULL;
1284 }
1285 tok2 = isl_stream_next_token_on_same_line(s);
1286 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1287 isl_stream_push_token(s, tok2);
1288 isl_stream_push_token(s, tok);
1289 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1290 }
1291 if (tok2) {
1292 isl_stream_error(s, tok2, "unexpected token");
1293 isl_stream_push_token(s, tok2);
1294 isl_stream_push_token(s, tok);
1295 return NULL;
1296 }
1297 n = isl_int_get_si(tok->u.v);
1298 isl_token_free(tok);
1299
1300 isl_assert(s->ctx, n >= 1, return NULL);
1301
1302 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1303
1304 for (i = 1; map && i < n; ++i)
1305 map = isl_map_union(map,
1306 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1307
1308 return map;
1309 }
1310
1311 static int optional_power(struct isl_stream *s)
1312 {
1313 int pow;
1314 struct isl_token *tok;
1315
1316 tok = isl_stream_next_token(s);
1317 if (!tok)
1318 return 1;
1319 if (tok->type != '^') {
1320 isl_stream_push_token(s, tok);
1321 return 1;
1322 }
1323 isl_token_free(tok);
1324 tok = isl_stream_next_token(s);
1325 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1326 isl_stream_error(s, tok, "expecting exponent");
1327 if (tok)
1328 isl_stream_push_token(s, tok);
1329 return 1;
1330 }
1331 pow = isl_int_get_si(tok->u.v);
1332 isl_token_free(tok);
1333 return pow;
1334 }
1335
1336 static __isl_give isl_div *read_div(struct isl_stream *s,
1337 __isl_take isl_dim *dim, struct vars *v)
1338 {
1339 int n;
1340 isl_basic_map *bmap;
1341
1342 n = v->n;
1343 bmap = isl_basic_map_universe(dim);
1344
1345 if (vars_add_anon(v) < 0)
1346 goto error;
1347 if (read_div_definition(s, v) < 0)
1348 goto error;
1349 bmap = add_divs(bmap, v);
1350 bmap = isl_basic_map_order_divs(bmap);
1351 if (!bmap)
1352 goto error;
1353 vars_drop(v, v->n - n);
1354
1355 return isl_basic_map_div(bmap, bmap->n_div - 1);
1356 error:
1357 isl_basic_map_free(bmap);
1358 return NULL;
1359 }
1360
1361 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1362 __isl_keep isl_basic_map *bmap, struct vars *v);
1363
1364 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1365 __isl_keep isl_basic_map *bmap, struct vars *v)
1366 {
1367 struct isl_qpolynomial *qp;
1368 struct isl_token *tok;
1369
1370 tok = isl_stream_next_token(s);
1371 if (!tok) {
1372 isl_stream_error(s, NULL, "unexpected EOF");
1373 return NULL;
1374 }
1375 if (tok->type == '(') {
1376 int pow;
1377
1378 isl_token_free(tok);
1379 qp = read_term(s, bmap, v);
1380 if (!qp)
1381 return NULL;
1382 if (isl_stream_eat(s, ')'))
1383 goto error;
1384 pow = optional_power(s);
1385 qp = isl_qpolynomial_pow(qp, pow);
1386 } else if (tok->type == ISL_TOKEN_VALUE) {
1387 struct isl_token *tok2;
1388 tok2 = isl_stream_next_token(s);
1389 if (tok2 && tok2->type == '/') {
1390 isl_token_free(tok2);
1391 tok2 = isl_stream_next_token(s);
1392 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1393 isl_stream_error(s, tok2, "expected denominator");
1394 isl_token_free(tok);
1395 isl_token_free(tok2);
1396 return NULL;
1397 }
1398 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1399 tok->u.v, tok2->u.v);
1400 isl_token_free(tok2);
1401 } else {
1402 isl_stream_push_token(s, tok2);
1403 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1404 tok->u.v);
1405 }
1406 isl_token_free(tok);
1407 } else if (tok->type == ISL_TOKEN_INFTY) {
1408 isl_token_free(tok);
1409 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1410 } else if (tok->type == ISL_TOKEN_NAN) {
1411 isl_token_free(tok);
1412 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1413 } else if (tok->type == ISL_TOKEN_IDENT) {
1414 int n = v->n;
1415 int pos = vars_pos(v, tok->u.s, -1);
1416 int pow;
1417 if (pos < 0) {
1418 isl_token_free(tok);
1419 return NULL;
1420 }
1421 if (pos >= n) {
1422 vars_drop(v, v->n - n);
1423 isl_stream_error(s, tok, "unknown identifier");
1424 isl_token_free(tok);
1425 return NULL;
1426 }
1427 isl_token_free(tok);
1428 pow = optional_power(s);
1429 qp = isl_qpolynomial_var_pow(isl_basic_map_get_dim(bmap), pos, pow);
1430 } else if (tok->type == '[') {
1431 isl_div *div;
1432 int pow;
1433
1434 isl_stream_push_token(s, tok);
1435 div = read_div(s, isl_basic_map_get_dim(bmap), v);
1436 pow = optional_power(s);
1437 qp = isl_qpolynomial_div_pow(div, pow);
1438 } else if (tok->type == '-') {
1439 struct isl_qpolynomial *qp2;
1440
1441 isl_token_free(tok);
1442 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1443 s->ctx->negone);
1444 qp2 = read_factor(s, bmap, v);
1445 qp = isl_qpolynomial_mul(qp, qp2);
1446 } else {
1447 isl_stream_error(s, tok, "unexpected isl_token");
1448 isl_stream_push_token(s, tok);
1449 return NULL;
1450 }
1451
1452 if (isl_stream_eat_if_available(s, '*') ||
1453 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1454 struct isl_qpolynomial *qp2;
1455
1456 qp2 = read_factor(s, bmap, v);
1457 qp = isl_qpolynomial_mul(qp, qp2);
1458 }
1459
1460 return qp;
1461 error:
1462 isl_qpolynomial_free(qp);
1463 return NULL;
1464 }
1465
1466 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1467 __isl_keep isl_basic_map *bmap, struct vars *v)
1468 {
1469 struct isl_token *tok;
1470 struct isl_qpolynomial *qp;
1471
1472 qp = read_factor(s, bmap, v);
1473
1474 for (;;) {
1475 tok = isl_stream_next_token(s);
1476 if (!tok)
1477 return qp;
1478
1479 if (tok->type == '+') {
1480 struct isl_qpolynomial *qp2;
1481
1482 isl_token_free(tok);
1483 qp2 = read_factor(s, bmap, v);
1484 qp = isl_qpolynomial_add(qp, qp2);
1485 } else if (tok->type == '-') {
1486 struct isl_qpolynomial *qp2;
1487
1488 isl_token_free(tok);
1489 qp2 = read_factor(s, bmap, v);
1490 qp = isl_qpolynomial_sub(qp, qp2);
1491 } else if (tok->type == ISL_TOKEN_VALUE &&
1492 isl_int_is_neg(tok->u.v)) {
1493 struct isl_qpolynomial *qp2;
1494
1495 isl_stream_push_token(s, tok);
1496 qp2 = read_factor(s, bmap, v);
1497 qp = isl_qpolynomial_add(qp, qp2);
1498 } else {
1499 isl_stream_push_token(s, tok);
1500 break;
1501 }
1502 }
1503
1504 return qp;
1505 }
1506
1507 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1508 __isl_take isl_basic_map *bmap, struct vars *v)
1509 {
1510 struct isl_token *tok;
1511 struct isl_map *map;
1512
1513 tok = isl_stream_next_token(s);
1514 if (!tok) {
1515 isl_stream_error(s, NULL, "unexpected EOF");
1516 goto error;
1517 }
1518 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1519 if (tok->type == ':' ||
1520 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1521 isl_token_free(tok);
1522 map = isl_map_intersect(map,
1523 read_disjuncts(s, v, isl_basic_map_copy(bmap)));
1524 } else
1525 isl_stream_push_token(s, tok);
1526
1527 isl_basic_map_free(bmap);
1528
1529 return map;
1530 error:
1531 isl_basic_map_free(bmap);
1532 return NULL;
1533 }
1534
1535 static struct isl_obj obj_read_poly(struct isl_stream *s,
1536 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1537 {
1538 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1539 struct isl_pw_qpolynomial *pwqp;
1540 struct isl_qpolynomial *qp;
1541 struct isl_map *map;
1542 struct isl_set *set;
1543
1544 qp = read_term(s, bmap, v);
1545 map = read_optional_disjuncts(s, bmap, v);
1546 set = isl_map_range(map);
1547
1548 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1549
1550 vars_drop(v, v->n - n);
1551
1552 obj.v = pwqp;
1553 return obj;
1554 }
1555
1556 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1557 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1558 {
1559 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1560 struct isl_obj obj_p;
1561 isl_qpolynomial *qp;
1562 isl_qpolynomial_fold *fold = NULL;
1563 isl_pw_qpolynomial_fold *pwf;
1564 isl_map *map;
1565 isl_set *set;
1566
1567 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1568 return obj_read_poly(s, bmap, v, n);
1569
1570 if (isl_stream_eat(s, '('))
1571 goto error;
1572
1573 qp = read_term(s, bmap, v);
1574 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1575
1576 while (isl_stream_eat_if_available(s, ',')) {
1577 isl_qpolynomial_fold *fold_i;
1578 qp = read_term(s, bmap, v);
1579 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1580 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1581 }
1582
1583 if (isl_stream_eat(s, ')'))
1584 goto error;
1585
1586 map = read_optional_disjuncts(s, bmap, v);
1587 set = isl_map_range(map);
1588 pwf = isl_pw_qpolynomial_fold_alloc(isl_fold_max, set, fold);
1589
1590 vars_drop(v, v->n - n);
1591
1592 obj.v = pwf;
1593 return obj;
1594 error:
1595 isl_basic_map_free(bmap);
1596 isl_qpolynomial_fold_free(fold);
1597 obj.type = isl_obj_none;
1598 return obj;
1599 }
1600
1601 static int is_rational(struct isl_stream *s)
1602 {
1603 struct isl_token *tok;
1604
1605 tok = isl_stream_next_token(s);
1606 if (!tok)
1607 return 0;
1608 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1609 isl_token_free(tok);
1610 isl_stream_eat(s, ':');
1611 return 1;
1612 }
1613
1614 isl_stream_push_token(s, tok);
1615
1616 return 0;
1617 }
1618
1619 static struct isl_obj obj_read_body(struct isl_stream *s,
1620 __isl_take isl_basic_map *bmap, struct vars *v)
1621 {
1622 struct isl_map *map = NULL;
1623 struct isl_token *tok;
1624 struct isl_obj obj = { isl_obj_set, NULL };
1625 int n = v->n;
1626
1627 if (is_rational(s))
1628 bmap = isl_basic_map_set_rational(bmap);
1629
1630 if (!next_is_tuple(s))
1631 return obj_read_poly_or_fold(s, bmap, v, n);
1632
1633 bmap = read_tuple(s, bmap, isl_dim_in, v);
1634 if (!bmap)
1635 goto error;
1636 tok = isl_stream_next_token(s);
1637 if (tok && tok->type == ISL_TOKEN_TO) {
1638 obj.type = isl_obj_map;
1639 isl_token_free(tok);
1640 if (!next_is_tuple(s)) {
1641 bmap = isl_basic_map_reverse(bmap);
1642 return obj_read_poly_or_fold(s, bmap, v, n);
1643 }
1644 bmap = read_tuple(s, bmap, isl_dim_out, v);
1645 if (!bmap)
1646 goto error;
1647 } else {
1648 bmap = isl_basic_map_reverse(bmap);
1649 if (tok)
1650 isl_stream_push_token(s, tok);
1651 }
1652
1653 map = read_optional_disjuncts(s, bmap, v);
1654
1655 vars_drop(v, v->n - n);
1656
1657 obj.v = map;
1658 return obj;
1659 error:
1660 isl_basic_map_free(bmap);
1661 obj.type = isl_obj_none;
1662 return obj;
1663 }
1664
1665 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1666 {
1667 if (obj.type == isl_obj_map) {
1668 obj.v = isl_union_map_from_map(obj.v);
1669 obj.type = isl_obj_union_map;
1670 } else if (obj.type == isl_obj_set) {
1671 obj.v = isl_union_set_from_set(obj.v);
1672 obj.type = isl_obj_union_set;
1673 } else if (obj.type == isl_obj_pw_qpolynomial) {
1674 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1675 obj.type = isl_obj_union_pw_qpolynomial;
1676 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1677 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1678 obj.type = isl_obj_union_pw_qpolynomial_fold;
1679 } else
1680 isl_assert(ctx, 0, goto error);
1681 return obj;
1682 error:
1683 obj.type->free(obj.v);
1684 obj.type = isl_obj_none;
1685 return obj;
1686 }
1687
1688 static struct isl_obj obj_add(struct isl_ctx *ctx,
1689 struct isl_obj obj1, struct isl_obj obj2)
1690 {
1691 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1692 obj1 = to_union(ctx, obj1);
1693 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1694 obj2 = to_union(ctx, obj2);
1695 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1696 obj1 = to_union(ctx, obj1);
1697 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1698 obj2 = to_union(ctx, obj2);
1699 if (obj1.type == isl_obj_pw_qpolynomial &&
1700 obj2.type == isl_obj_union_pw_qpolynomial)
1701 obj1 = to_union(ctx, obj1);
1702 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1703 obj2.type == isl_obj_pw_qpolynomial)
1704 obj2 = to_union(ctx, obj2);
1705 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1706 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1707 obj1 = to_union(ctx, obj1);
1708 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1709 obj2.type == isl_obj_pw_qpolynomial_fold)
1710 obj2 = to_union(ctx, obj2);
1711 isl_assert(ctx, obj1.type == obj2.type, goto error);
1712 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
1713 obj1 = to_union(ctx, obj1);
1714 obj2 = to_union(ctx, obj2);
1715 }
1716 if (obj1.type == isl_obj_set && !isl_set_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_pw_qpolynomial &&
1721 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
1722 obj1 = to_union(ctx, obj1);
1723 obj2 = to_union(ctx, obj2);
1724 }
1725 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1726 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
1727 obj1 = to_union(ctx, obj1);
1728 obj2 = to_union(ctx, obj2);
1729 }
1730 obj1.v = obj1.type->add(obj1.v, obj2.v);
1731 return obj1;
1732 error:
1733 obj1.type->free(obj1.v);
1734 obj2.type->free(obj2.v);
1735 obj1.type = isl_obj_none;
1736 obj1.v = NULL;
1737 return obj1;
1738 }
1739
1740 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1741 {
1742 isl_basic_map *bmap = NULL;
1743 struct isl_token *tok;
1744 struct vars *v = NULL;
1745 struct isl_obj obj = { isl_obj_set, NULL };
1746
1747 tok = isl_stream_next_token(s);
1748 if (!tok) {
1749 isl_stream_error(s, NULL, "unexpected EOF");
1750 goto error;
1751 }
1752 if (tok->type == ISL_TOKEN_VALUE) {
1753 struct isl_token *tok2;
1754 struct isl_map *map;
1755
1756 tok2 = isl_stream_next_token(s);
1757 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
1758 isl_int_is_neg(tok2->u.v)) {
1759 if (tok2)
1760 isl_stream_push_token(s, tok2);
1761 obj.type = isl_obj_int;
1762 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
1763 isl_token_free(tok);
1764 return obj;
1765 }
1766 isl_stream_push_token(s, tok2);
1767 isl_stream_push_token(s, tok);
1768 map = map_read_polylib(s, nparam);
1769 if (!map)
1770 goto error;
1771 if (isl_map_dim(map, isl_dim_in) > 0)
1772 obj.type = isl_obj_map;
1773 obj.v = map;
1774 return obj;
1775 }
1776 v = vars_new(s->ctx);
1777 if (!v) {
1778 isl_stream_push_token(s, tok);
1779 goto error;
1780 }
1781 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
1782 if (tok->type == '[') {
1783 isl_stream_push_token(s, tok);
1784 bmap = read_tuple(s, bmap, isl_dim_param, v);
1785 if (!bmap)
1786 goto error;
1787 if (nparam >= 0)
1788 isl_assert(s->ctx, nparam == v->n, goto error);
1789 tok = isl_stream_next_token(s);
1790 if (!tok || tok->type != ISL_TOKEN_TO) {
1791 isl_stream_error(s, tok, "expecting '->'");
1792 if (tok)
1793 isl_stream_push_token(s, tok);
1794 goto error;
1795 }
1796 isl_token_free(tok);
1797 tok = isl_stream_next_token(s);
1798 } else if (nparam > 0)
1799 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
1800 if (!tok || tok->type != '{') {
1801 isl_stream_error(s, tok, "expecting '{'");
1802 if (tok)
1803 isl_stream_push_token(s, tok);
1804 goto error;
1805 }
1806 isl_token_free(tok);
1807
1808 tok = isl_stream_next_token(s);
1809 if (!tok)
1810 ;
1811 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1812 isl_token_free(tok);
1813 if (isl_stream_eat(s, '='))
1814 goto error;
1815 bmap = read_tuple(s, bmap, isl_dim_param, v);
1816 if (!bmap)
1817 goto error;
1818 if (nparam >= 0)
1819 isl_assert(s->ctx, nparam == v->n, goto error);
1820 } else if (tok->type == '}') {
1821 obj.type = isl_obj_union_set;
1822 obj.v = isl_union_set_empty(isl_basic_map_get_dim(bmap));
1823 isl_token_free(tok);
1824 goto done;
1825 } else
1826 isl_stream_push_token(s, tok);
1827
1828 for (;;) {
1829 struct isl_obj o;
1830 tok = NULL;
1831 o = obj_read_body(s, isl_basic_map_copy(bmap), v);
1832 if (o.type == isl_obj_none || !o.v)
1833 goto error;
1834 if (!obj.v)
1835 obj = o;
1836 else {
1837 obj = obj_add(s->ctx, obj, o);
1838 if (obj.type == isl_obj_none || !obj.v)
1839 goto error;
1840 }
1841 tok = isl_stream_next_token(s);
1842 if (!tok || tok->type != ';')
1843 break;
1844 isl_token_free(tok);
1845 if (isl_stream_next_token_is(s, '}')) {
1846 tok = isl_stream_next_token(s);
1847 break;
1848 }
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