?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
isl_stream_read_map: properly read nested divs
[isl.git] / isl_input.c
blob607732ef9b1a8c38bad5d081fd5df739642ed3d7
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_ctx_private.h>
18 #include <isl_map_private.h>
19 #include <isl/set.h>
20 #include <isl/seq.h>
21 #include <isl/div.h>
22 #include <isl/stream.h>
23 #include <isl/obj.h>
24 #include "isl_polynomial_private.h"
25 #include <isl/union_map.h>
26 #include <isl_mat_private.h>
27
28 struct variable {
29 char *name;
30 int pos;
31 isl_vec *def;
32 struct variable *next;
33 };
34
35 struct vars {
36 struct isl_ctx *ctx;
37 int n;
38 struct variable *v;
39 };
40
41 static struct vars *vars_new(struct isl_ctx *ctx)
42 {
43 struct vars *v;
44 v = isl_alloc_type(ctx, struct vars);
45 if (!v)
46 return NULL;
47 v->ctx = ctx;
48 v->n = 0;
49 v->v = NULL;
50 return v;
51 }
52
53 static void variable_free(struct variable *var)
54 {
55 while (var) {
56 struct variable *next = var->next;
57 isl_vec_free(var->def);
58 free(var->name);
59 free(var);
60 var = next;
61 }
62 }
63
64 static void vars_free(struct vars *v)
65 {
66 if (!v)
67 return;
68 variable_free(v->v);
69 free(v);
70 }
71
72 static void vars_drop(struct vars *v, int n)
73 {
74 struct variable *var;
75
76 if (!v || !v->v)
77 return;
78
79 v->n -= n;
80
81 var = v->v;
82 while (--n >= 0) {
83 struct variable *next = var->next;
84 isl_vec_free(var->def);
85 free(var->name);
86 free(var);
87 var = next;
88 }
89 v->v = var;
90 }
91
92 static struct variable *variable_new(struct vars *v, const char *name, int len,
93 int pos)
94 {
95 struct variable *var;
96 var = isl_alloc_type(v->ctx, struct variable);
97 if (!var)
98 goto error;
99 var->name = strdup(name);
100 var->name[len] = '\0';
101 var->pos = pos;
102 var->def = NULL;
103 var->next = v->v;
104 return var;
105 error:
106 variable_free(v->v);
107 return NULL;
108 }
109
110 static int vars_pos(struct vars *v, const char *s, int len)
111 {
112 int pos;
113 struct variable *q;
114
115 if (len == -1)
116 len = strlen(s);
117 for (q = v->v; q; q = q->next) {
118 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
119 break;
120 }
121 if (q)
122 pos = q->pos;
123 else {
124 pos = v->n;
125 v->v = variable_new(v, s, len, v->n);
126 if (!v->v)
127 return -1;
128 v->n++;
129 }
130 return pos;
131 }
132
133 static int vars_add_anon(struct vars *v)
134 {
135 v->v = variable_new(v, "", 0, v->n);
136
137 if (!v->v)
138 return -1;
139 v->n++;
140
141 return 0;
142 }
143
144 static __isl_give isl_basic_map *set_name(__isl_take isl_basic_map *bmap,
145 enum isl_dim_type type, unsigned pos, char *name)
146 {
147 char *prime;
148
149 if (!bmap)
150 return NULL;
151 if (!name)
152 return bmap;
153
154 prime = strchr(name, '\'');
155 if (prime)
156 *prime = '\0';
157 bmap = isl_basic_map_set_dim_name(bmap, type, pos, name);
158 if (prime)
159 *prime = '\'';
160
161 return bmap;
162 }
163
164 /* Obtain next token, with some preprocessing.
165 * In particular, evaluate expressions of the form x^y,
166 * with x and y values.
167 */
168 static struct isl_token *next_token(struct isl_stream *s)
169 {
170 struct isl_token *tok, *tok2;
171
172 tok = isl_stream_next_token(s);
173 if (!tok || tok->type != ISL_TOKEN_VALUE)
174 return tok;
175 if (!isl_stream_eat_if_available(s, '^'))
176 return tok;
177 tok2 = isl_stream_next_token(s);
178 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
179 isl_stream_error(s, tok2, "expecting constant value");
180 goto error;
181 }
182
183 isl_int_pow_ui(tok->u.v, tok->u.v, isl_int_get_ui(tok2->u.v));
184
185 isl_token_free(tok2);
186 return tok;
187 error:
188 isl_token_free(tok);
189 isl_token_free(tok2);
190 return NULL;
191 }
192
193 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
194 {
195 struct isl_token *tok;
196
197 tok = next_token(s);
198 if (!tok || tok->type != ISL_TOKEN_VALUE) {
199 isl_stream_error(s, tok, "expecting constant value");
200 goto error;
201 }
202
203 isl_int_mul(*f, *f, tok->u.v);
204
205 isl_token_free(tok);
206
207 if (isl_stream_eat_if_available(s, '*'))
208 return accept_cst_factor(s, f);
209
210 return 0;
211 error:
212 isl_token_free(tok);
213 return -1;
214 }
215
216 /* Given an affine expression aff, return an affine expression
217 * for aff % d, with d the next token on the stream, which is
218 * assumed to be a constant.
219 *
220 * We introduce an integer division q = [aff/d] and the result
221 * is set to aff - d q.
222 */
223 static __isl_give isl_vec *affine_mod(struct isl_stream *s,
224 struct vars *v, __isl_take isl_vec *aff)
225 {
226 struct isl_token *tok;
227 struct variable *var;
228 isl_vec *mod;
229
230 tok = next_token(s);
231 if (!tok || tok->type != ISL_TOKEN_VALUE) {
232 isl_stream_error(s, tok, "expecting constant value");
233 goto error;
234 }
235
236 if (vars_add_anon(v) < 0)
237 goto error;
238
239 var = v->v;
240
241 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
242 if (!var->def)
243 goto error;
244 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
245 isl_int_set_si(var->def->el[1 + aff->size], 0);
246 isl_int_set(var->def->el[0], tok->u.v);
247
248 mod = isl_vec_alloc(v->ctx, 1 + v->n);
249 if (!mod)
250 goto error;
251
252 isl_seq_cpy(mod->el, aff->el, aff->size);
253 isl_int_neg(mod->el[aff->size], tok->u.v);
254
255 isl_vec_free(aff);
256 isl_token_free(tok);
257 return mod;
258 error:
259 isl_vec_free(aff);
260 isl_token_free(tok);
261 return NULL;
262 }
263
264 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v);
265 static int read_div_definition(struct isl_stream *s, struct vars *v);
266
267 static __isl_give isl_vec *accept_affine_factor(struct isl_stream *s,
268 struct vars *v)
269 {
270 struct isl_token *tok = NULL;
271 isl_vec *aff = NULL;
272
273 tok = next_token(s);
274 if (!tok) {
275 isl_stream_error(s, NULL, "unexpected EOF");
276 goto error;
277 }
278 if (tok->type == ISL_TOKEN_IDENT) {
279 int n = v->n;
280 int pos = vars_pos(v, tok->u.s, -1);
281 if (pos < 0)
282 goto error;
283 if (pos >= n) {
284 isl_stream_error(s, tok, "unknown identifier");
285 goto error;
286 }
287
288 aff = isl_vec_alloc(v->ctx, 1 + v->n);
289 if (!aff)
290 goto error;
291 isl_seq_clr(aff->el, aff->size);
292 isl_int_set_si(aff->el[1 + pos], 1);
293 isl_token_free(tok);
294 } else if (tok->type == ISL_TOKEN_VALUE) {
295 if (isl_stream_eat_if_available(s, '*')) {
296 aff = accept_affine_factor(s, v);
297 aff = isl_vec_scale(aff, tok->u.v);
298 } else {
299 aff = isl_vec_alloc(v->ctx, 1 + v->n);
300 if (!aff)
301 goto error;
302 isl_seq_clr(aff->el, aff->size);
303 isl_int_set(aff->el[0], tok->u.v);
304 }
305 isl_token_free(tok);
306 } else if (tok->type == '(') {
307 isl_token_free(tok);
308 tok = NULL;
309 aff = accept_affine(s, v);
310 if (!aff)
311 goto error;
312 if (isl_stream_eat(s, ')'))
313 goto error;
314 } else if (tok->type == '[') {
315 if (vars_add_anon(v) < 0)
316 goto error;
317 aff = isl_vec_alloc(v->ctx, 1 + v->n);
318 if (!aff)
319 goto error;
320 isl_seq_clr(aff->el, aff->size);
321 isl_int_set_si(aff->el[1 + v->n - 1], 1);
322 isl_stream_push_token(s, tok);
323 tok = NULL;
324 if (read_div_definition(s, v) < 0)
325 goto error;
326 aff = isl_vec_zero_extend(aff, 1 + v->n);
327 } else {
328 isl_stream_error(s, tok, "expecting factor");
329 goto error;
330 }
331 if (isl_stream_eat_if_available(s, '%'))
332 return affine_mod(s, v, aff);
333 if (isl_stream_eat_if_available(s, '*')) {
334 isl_int f;
335 isl_int_init(f);
336 isl_int_set_si(f, 1);
337 if (accept_cst_factor(s, &f) < 0) {
338 isl_int_clear(f);
339 goto error2;
340 }
341 aff = isl_vec_scale(aff, f);
342 isl_int_clear(f);
343 }
344
345 return aff;
346 error:
347 isl_token_free(tok);
348 error2:
349 isl_vec_free(aff);
350 return NULL;
351 }
352
353 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
354 {
355 struct isl_token *tok = NULL;
356 struct isl_vec *aff;
357 int sign = 1;
358
359 aff = isl_vec_alloc(v->ctx, 1 + v->n);
360 if (!aff)
361 return NULL;
362 isl_seq_clr(aff->el, aff->size);
363
364 for (;;) {
365 tok = next_token(s);
366 if (!tok) {
367 isl_stream_error(s, NULL, "unexpected EOF");
368 goto error;
369 }
370 if (tok->type == '-') {
371 sign = -sign;
372 isl_token_free(tok);
373 continue;
374 }
375 if (tok->type == '(' || tok->type == '[' ||
376 tok->type == ISL_TOKEN_IDENT) {
377 isl_vec *aff2;
378 isl_stream_push_token(s, tok);
379 tok = NULL;
380 aff2 = accept_affine_factor(s, v);
381 if (sign < 0)
382 aff2 = isl_vec_scale(aff2, s->ctx->negone);
383 aff = isl_vec_zero_extend(aff, 1 + v->n);
384 aff = isl_vec_add(aff, aff2);
385 if (!aff)
386 goto error;
387 sign = 1;
388 } else if (tok->type == ISL_TOKEN_VALUE) {
389 if (sign < 0)
390 isl_int_neg(tok->u.v, tok->u.v);
391 if (isl_stream_eat_if_available(s, '*') ||
392 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
393 isl_vec *aff2;
394 aff2 = accept_affine_factor(s, v);
395 aff2 = isl_vec_scale(aff2, tok->u.v);
396 aff = isl_vec_zero_extend(aff, 1 + v->n);
397 aff = isl_vec_add(aff, aff2);
398 if (!aff)
399 goto error;
400 } else {
401 isl_int_add(aff->el[0], aff->el[0], tok->u.v);
402 }
403 sign = 1;
404 } else {
405 isl_stream_error(s, tok, "unexpected isl_token");
406 isl_stream_push_token(s, tok);
407 isl_vec_free(aff);
408 return NULL;
409 }
410 isl_token_free(tok);
411
412 tok = next_token(s);
413 if (tok && tok->type == '-') {
414 sign = -sign;
415 isl_token_free(tok);
416 } else if (tok && tok->type == '+') {
417 /* nothing */
418 isl_token_free(tok);
419 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
420 isl_int_is_neg(tok->u.v)) {
421 isl_stream_push_token(s, tok);
422 } else {
423 if (tok)
424 isl_stream_push_token(s, tok);
425 break;
426 }
427 }
428
429 return aff;
430 error:
431 isl_token_free(tok);
432 isl_vec_free(aff);
433 return NULL;
434 }
435
436 /* Add any variables in the variable list "v" that are not already in "bmap"
437 * as existentially quantified variables in "bmap".
438 */
439 static __isl_give isl_basic_map *add_divs(__isl_take isl_basic_map *bmap,
440 struct vars *v)
441 {
442 int i;
443 int extra;
444 struct variable *var;
445
446 extra = v->n - isl_basic_map_total_dim(bmap);
447
448 if (extra == 0)
449 return bmap;
450
451 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
452 extra, 0, 2 * extra);
453
454 for (i = 0; i < extra; ++i)
455 if (isl_basic_map_alloc_div(bmap) < 0)
456 goto error;
457
458 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
459 int k = bmap->n_div - 1 - i;
460
461 isl_seq_cpy(bmap->div[k], var->def->el, var->def->size);
462 isl_seq_clr(bmap->div[k] + var->def->size,
463 2 + v->n - var->def->size);
464
465 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
466 goto error;
467 }
468
469 return bmap;
470 error:
471 isl_basic_map_free(bmap);
472 return NULL;
473 }
474
475 static __isl_give isl_basic_map *read_var_def(struct isl_stream *s,
476 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
477 {
478 isl_dim *dim;
479 isl_basic_map *def = NULL;
480 struct isl_vec *vec;
481 int k;
482 int n;
483
484 if (vars_add_anon(v) < 0)
485 goto error;
486 n = v->n;
487
488 vec = accept_affine(s, v);
489 if (!vec)
490 goto error;
491
492 dim = isl_basic_map_get_dim(bmap);
493 def = isl_basic_map_universe(dim);
494 def = add_divs(def, v);
495 def = isl_basic_map_extend_constraints(def, 1, 0);
496 k = isl_basic_map_alloc_equality(def);
497 if (k >= 0) {
498 isl_seq_cpy(def->eq[k], vec->el, vec->size);
499 isl_int_set_si(def->eq[k][1 + n - 1], -1);
500 }
501 isl_vec_free(vec);
502 if (k < 0)
503 goto error;
504
505 vars_drop(v, v->n - n);
506
507 def = isl_basic_map_simplify(def);
508 def = isl_basic_map_finalize(def);
509 bmap = isl_basic_map_intersect(bmap, def);
510 return bmap;
511 error:
512 isl_basic_map_free(bmap);
513 isl_basic_map_free(def);
514 return NULL;
515 }
516
517 static __isl_give isl_basic_map *read_var_list(struct isl_stream *s,
518 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
519 {
520 int i = 0;
521 struct isl_token *tok;
522
523 while ((tok = next_token(s)) != NULL) {
524 int new_name = 0;
525
526 if (tok->type == ISL_TOKEN_IDENT) {
527 int n = v->n;
528 int p = vars_pos(v, tok->u.s, -1);
529 if (p < 0)
530 goto error;
531 new_name = p >= n;
532 }
533
534 if (new_name) {
535 bmap = isl_basic_map_add(bmap, type, 1);
536 bmap = set_name(bmap, type, i, v->v->name);
537 isl_token_free(tok);
538 } else if (tok->type == ISL_TOKEN_IDENT ||
539 tok->type == ISL_TOKEN_VALUE ||
540 tok->type == '-' ||
541 tok->type == '(') {
542 if (type == isl_dim_param) {
543 isl_stream_error(s, tok,
544 "expecting unique identifier");
545 goto error;
546 }
547 isl_stream_push_token(s, tok);
548 tok = NULL;
549 bmap = isl_basic_map_add(bmap, type, 1);
550 bmap = read_var_def(s, bmap, type, v);
551 } else
552 break;
553
554 tok = isl_stream_next_token(s);
555 if (!tok || tok->type != ',')
556 break;
557
558 isl_token_free(tok);
559 i++;
560 }
561 if (tok)
562 isl_stream_push_token(s, tok);
563
564 return bmap;
565 error:
566 isl_token_free(tok);
567 isl_basic_map_free(bmap);
568 return NULL;
569 }
570
571 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
572 struct vars *v)
573 {
574 struct isl_vec *vec;
575 struct isl_mat *mat;
576 struct isl_token *tok = NULL;
577
578 vec = accept_affine(s, v);
579 mat = isl_mat_from_row_vec(vec);
580 if (!mat)
581 return NULL;
582
583 for (;;) {
584 tok = isl_stream_next_token(s);
585 if (!tok) {
586 isl_stream_error(s, NULL, "unexpected EOF");
587 goto error;
588 }
589 if (tok->type != ',') {
590 isl_stream_push_token(s, tok);
591 break;
592 }
593 isl_token_free(tok);
594
595 vec = accept_affine(s, v);
596 mat = isl_mat_add_zero_cols(mat, 1 + v->n - isl_mat_cols(mat));
597 mat = isl_mat_vec_concat(mat, vec);
598 if (!mat)
599 return NULL;
600 }
601
602 return mat;
603 error:
604 isl_mat_free(mat);
605 return NULL;
606 }
607
608 static int read_div_definition(struct isl_stream *s, struct vars *v)
609 {
610 struct isl_token *tok;
611 int seen_paren = 0;
612 struct isl_vec *aff;
613 struct variable *var;
614
615 if (isl_stream_eat(s, '['))
616 return -1;
617
618 tok = isl_stream_next_token(s);
619 if (!tok)
620 return -1;
621 if (tok->type == '(') {
622 seen_paren = 1;
623 isl_token_free(tok);
624 } else
625 isl_stream_push_token(s, tok);
626
627 var = v->v;
628
629 aff = accept_affine(s, v);
630 if (!aff)
631 return -1;
632
633 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
634 if (!var->def) {
635 isl_vec_free(aff);
636 return -1;
637 }
638
639 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
640
641 isl_vec_free(aff);
642
643 if (seen_paren && isl_stream_eat(s, ')'))
644 return -1;
645 if (isl_stream_eat(s, '/'))
646 return -1;
647
648 tok = next_token(s);
649 if (!tok)
650 return -1;
651 if (tok->type != ISL_TOKEN_VALUE) {
652 isl_stream_error(s, tok, "expected denominator");
653 isl_stream_push_token(s, tok);
654 return -1;
655 }
656 isl_int_set(var->def->el[0], tok->u.v);
657 isl_token_free(tok);
658
659 if (isl_stream_eat(s, ']'))
660 return -1;
661
662 return 0;
663 }
664
665 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
666 struct vars *v, struct isl_basic_map *bmap, int pos)
667 {
668 struct variable *var = v->v;
669 unsigned o_out = isl_basic_map_offset(bmap, isl_dim_out) - 1;
670
671 if (read_div_definition(s, v) < 0)
672 goto error;
673
674 if (isl_basic_map_add_div_constraints_var(bmap, o_out + pos,
675 var->def->el) < 0)
676 goto error;
677
678 return bmap;
679 error:
680 isl_basic_map_free(bmap);
681 return NULL;
682 }
683
684 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
685 struct vars *v, struct isl_basic_map *bmap)
686 {
687 struct isl_token *tok;
688
689 while ((tok = isl_stream_next_token(s)) != NULL) {
690 int p;
691 int n = v->n;
692 unsigned n_out = isl_basic_map_dim(bmap, isl_dim_out);
693
694 if (tok->type != ISL_TOKEN_IDENT)
695 break;
696
697 p = vars_pos(v, tok->u.s, -1);
698 if (p < 0)
699 goto error;
700 if (p < n) {
701 isl_stream_error(s, tok, "expecting unique identifier");
702 goto error;
703 }
704
705 bmap = isl_basic_map_cow(bmap);
706 bmap = isl_basic_map_add(bmap, isl_dim_out, 1);
707 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
708 0, 0, 2);
709
710 isl_token_free(tok);
711 tok = isl_stream_next_token(s);
712 if (tok && tok->type == '=') {
713 isl_token_free(tok);
714 bmap = add_div_definition(s, v, bmap, n_out);
715 tok = isl_stream_next_token(s);
716 }
717
718 if (!tok || tok->type != ',')
719 break;
720
721 isl_token_free(tok);
722 }
723 if (tok)
724 isl_stream_push_token(s, tok);
725
726 return bmap;
727 error:
728 isl_token_free(tok);
729 isl_basic_map_free(bmap);
730 return NULL;
731 }
732
733 static int next_is_tuple(struct isl_stream *s)
734 {
735 struct isl_token *tok;
736 int is_tuple;
737
738 tok = isl_stream_next_token(s);
739 if (!tok)
740 return 0;
741 if (tok->type == '[') {
742 isl_stream_push_token(s, tok);
743 return 1;
744 }
745 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
746 isl_stream_push_token(s, tok);
747 return 0;
748 }
749
750 is_tuple = isl_stream_next_token_is(s, '[');
751
752 isl_stream_push_token(s, tok);
753
754 return is_tuple;
755 }
756
757 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
758 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v);
759
760 static __isl_give isl_basic_map *read_nested_tuple(struct isl_stream *s,
761 __isl_take isl_basic_map *bmap, struct vars *v)
762 {
763 bmap = read_tuple(s, bmap, isl_dim_in, v);
764 if (isl_stream_eat(s, ISL_TOKEN_TO))
765 goto error;
766 bmap = read_tuple(s, bmap, isl_dim_out, v);
767 bmap = isl_basic_map_from_range(isl_basic_map_wrap(bmap));
768 return bmap;
769 error:
770 isl_basic_map_free(bmap);
771 return NULL;
772 }
773
774 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
775 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
776 {
777 struct isl_token *tok;
778 char *name = NULL;
779
780 tok = isl_stream_next_token(s);
781 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
782 name = strdup(tok->u.s);
783 if (!name)
784 goto error;
785 isl_token_free(tok);
786 tok = isl_stream_next_token(s);
787 }
788 if (!tok || tok->type != '[') {
789 isl_stream_error(s, tok, "expecting '['");
790 goto error;
791 }
792 isl_token_free(tok);
793 if (type != isl_dim_param && next_is_tuple(s)) {
794 isl_dim *dim = isl_basic_map_get_dim(bmap);
795 int nparam = isl_dim_size(dim, isl_dim_param);
796 int n_in = isl_dim_size(dim, isl_dim_in);
797 isl_basic_map *nested;
798 if (type == isl_dim_out)
799 dim = isl_dim_move(dim, isl_dim_param, nparam,
800 isl_dim_in, 0, n_in);
801 nested = isl_basic_map_alloc_dim(dim, 0, 0, 0);
802 nested = read_nested_tuple(s, nested, v);
803 if (type == isl_dim_in) {
804 nested = isl_basic_map_reverse(nested);
805 bmap = isl_basic_map_intersect(nested, bmap);
806 } else {
807 isl_basic_set *bset;
808 dim = isl_dim_range(isl_basic_map_get_dim(nested));
809 dim = isl_dim_drop(dim, isl_dim_param, nparam, n_in);
810 dim = isl_dim_join(isl_basic_map_get_dim(bmap), dim);
811 bset = isl_basic_map_domain(bmap);
812 nested = isl_basic_map_reset_dim(nested, dim);
813 bmap = isl_basic_map_intersect_domain(nested, bset);
814 }
815 } else
816 bmap = read_var_list(s, bmap, type, v);
817 tok = isl_stream_next_token(s);
818 if (!tok || tok->type != ']') {
819 isl_stream_error(s, tok, "expecting ']'");
820 goto error;
821 }
822 isl_token_free(tok);
823
824 if (name) {
825 bmap = isl_basic_map_set_tuple_name(bmap, type, name);
826 free(name);
827 }
828
829 return bmap;
830 error:
831 if (tok)
832 isl_token_free(tok);
833 isl_basic_map_free(bmap);
834 return NULL;
835 }
836
837 static __isl_give isl_basic_map *construct_constraint(
838 __isl_take isl_basic_map *bmap, enum isl_token_type type,
839 isl_int *left, isl_int *right)
840 {
841 int k;
842 unsigned len;
843 struct isl_ctx *ctx;
844
845 if (!bmap)
846 return NULL;
847 len = 1 + isl_basic_map_total_dim(bmap);
848 ctx = bmap->ctx;
849
850 k = isl_basic_map_alloc_inequality(bmap);
851 if (k < 0)
852 goto error;
853 if (type == ISL_TOKEN_LE)
854 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
855 ctx->one, right,
856 len);
857 else if (type == ISL_TOKEN_GE)
858 isl_seq_combine(bmap->ineq[k], ctx->one, left,
859 ctx->negone, right,
860 len);
861 else if (type == ISL_TOKEN_LT) {
862 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
863 ctx->one, right,
864 len);
865 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
866 } else if (type == ISL_TOKEN_GT) {
867 isl_seq_combine(bmap->ineq[k], ctx->one, left,
868 ctx->negone, right,
869 len);
870 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
871 } else {
872 isl_seq_combine(bmap->ineq[k], ctx->one, left,
873 ctx->negone, right,
874 len);
875 isl_basic_map_inequality_to_equality(bmap, k);
876 }
877
878 return bmap;
879 error:
880 isl_basic_map_free(bmap);
881 return NULL;
882 }
883
884 static int is_comparator(struct isl_token *tok)
885 {
886 if (!tok)
887 return 0;
888
889 switch (tok->type) {
890 case ISL_TOKEN_LT:
891 case ISL_TOKEN_GT:
892 case ISL_TOKEN_LE:
893 case ISL_TOKEN_GE:
894 case '=':
895 return 1;
896 default:
897 return 0;
898 }
899 }
900
901 /* Add any variables in the variable list "v" that are not already in "bmap"
902 * as output variables in "bmap".
903 */
904 static __isl_give isl_basic_map *add_lifted_divs(__isl_take isl_basic_map *bmap,
905 struct vars *v)
906 {
907 int i;
908 int extra;
909 struct variable *var;
910
911 extra = v->n - isl_basic_map_total_dim(bmap);
912
913 if (extra == 0)
914 return bmap;
915
916 bmap = isl_basic_map_add(bmap, isl_dim_out, extra);
917 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
918 0, 0, 2 * extra);
919
920 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
921 var->def = isl_vec_zero_extend(var->def, 2 + v->n);
922 if (!var->def)
923 goto error;
924 if (isl_basic_map_add_div_constraints_var(bmap, var->pos,
925 var->def->el) < 0)
926 goto error;
927 }
928
929 return bmap;
930 error:
931 isl_basic_map_free(bmap);
932 return NULL;
933 }
934
935 static struct isl_basic_map *add_constraint(struct isl_stream *s,
936 struct vars *v, struct isl_basic_map *bmap)
937 {
938 int i, j;
939 struct isl_token *tok = NULL;
940 struct isl_mat *aff1 = NULL, *aff2 = NULL;
941
942 bmap = isl_basic_map_cow(bmap);
943
944 aff1 = accept_affine_list(s, v);
945 if (!aff1)
946 goto error;
947 tok = isl_stream_next_token(s);
948 if (!is_comparator(tok)) {
949 isl_stream_error(s, tok, "missing operator");
950 if (tok)
951 isl_stream_push_token(s, tok);
952 tok = NULL;
953 goto error;
954 }
955 for (;;) {
956 aff2 = accept_affine_list(s, v);
957 if (!aff2)
958 goto error;
959
960 aff1 = isl_mat_add_zero_cols(aff1, aff2->n_col - aff1->n_col);
961 if (!aff1)
962 goto error;
963 bmap = add_lifted_divs(bmap, v);
964 bmap = isl_basic_map_extend_constraints(bmap, 0,
965 aff1->n_row * aff2->n_row);
966 for (i = 0; i < aff1->n_row; ++i)
967 for (j = 0; j < aff2->n_row; ++j)
968 bmap = construct_constraint(bmap, tok->type,
969 aff1->row[i], aff2->row[j]);
970 isl_token_free(tok);
971 isl_mat_free(aff1);
972 aff1 = aff2;
973
974 tok = isl_stream_next_token(s);
975 if (!is_comparator(tok)) {
976 if (tok)
977 isl_stream_push_token(s, tok);
978 break;
979 }
980 }
981 isl_mat_free(aff1);
982
983 return bmap;
984 error:
985 if (tok)
986 isl_token_free(tok);
987 isl_mat_free(aff1);
988 isl_mat_free(aff2);
989 isl_basic_map_free(bmap);
990 return NULL;
991 }
992
993 static isl_map *read_constraint(struct isl_stream *s,
994 struct vars *v, __isl_take isl_basic_map *bmap)
995 {
996 int n = v->n;
997
998 if (!bmap)
999 return NULL;
1000
1001 bmap = isl_basic_set_unwrap(isl_basic_set_lift(isl_basic_map_wrap(bmap)));
1002
1003 bmap = add_constraint(s, v, bmap);
1004 bmap = isl_basic_map_simplify(bmap);
1005 bmap = isl_basic_map_finalize(bmap);
1006
1007 bmap = isl_basic_set_unwrap(isl_basic_map_domain(bmap));
1008
1009 vars_drop(v, v->n - n);
1010
1011 return isl_map_from_basic_map(bmap);
1012 }
1013
1014 static struct isl_map *read_disjuncts(struct isl_stream *s,
1015 struct vars *v, __isl_take isl_basic_map *bmap);
1016
1017 static __isl_give isl_map *read_exists(struct isl_stream *s,
1018 struct vars *v, __isl_take isl_basic_map *bmap)
1019 {
1020 int n = v->n;
1021 int seen_paren = isl_stream_eat_if_available(s, '(');
1022 isl_map *map = NULL;
1023
1024 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
1025 bmap = read_defined_var_list(s, v, bmap);
1026
1027 if (isl_stream_eat(s, ':'))
1028 goto error;
1029
1030 map = read_disjuncts(s, v, bmap);
1031 map = isl_set_unwrap(isl_map_domain(map));
1032 bmap = NULL;
1033
1034 vars_drop(v, v->n - n);
1035 if (seen_paren && isl_stream_eat(s, ')'))
1036 goto error;
1037
1038 return map;
1039 error:
1040 isl_basic_map_free(bmap);
1041 isl_map_free(map);
1042 return NULL;
1043 }
1044
1045 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1046 struct vars *v, __isl_take isl_basic_map *bmap)
1047 {
1048 isl_map *map;
1049
1050 if (isl_stream_eat_if_available(s, '(')) {
1051 map = read_disjuncts(s, v, bmap);
1052 if (isl_stream_eat(s, ')'))
1053 goto error;
1054 return map;
1055 }
1056
1057 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1058 return read_exists(s, v, bmap);
1059
1060 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1061 return isl_map_from_basic_map(bmap);
1062
1063 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1064 isl_dim *dim = isl_basic_map_get_dim(bmap);
1065 isl_basic_map_free(bmap);
1066 return isl_map_empty(dim);
1067 }
1068
1069 return read_constraint(s, v, bmap);
1070 error:
1071 isl_map_free(map);
1072 return NULL;
1073 }
1074
1075 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1076 struct vars *v, __isl_take isl_basic_map *bmap)
1077 {
1078 isl_map *map;
1079 int negate;
1080
1081 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1082 map = read_conjunct(s, v, isl_basic_map_copy(bmap));
1083 if (negate) {
1084 isl_map *t;
1085 t = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1086 map = isl_map_subtract(t, map);
1087 }
1088
1089 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1090 isl_map *map_i;
1091
1092 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1093 map_i = read_conjunct(s, v, isl_basic_map_copy(bmap));
1094 if (negate)
1095 map = isl_map_subtract(map, map_i);
1096 else
1097 map = isl_map_intersect(map, map_i);
1098 }
1099
1100 isl_basic_map_free(bmap);
1101 return map;
1102 }
1103
1104 static struct isl_map *read_disjuncts(struct isl_stream *s,
1105 struct vars *v, __isl_take isl_basic_map *bmap)
1106 {
1107 struct isl_map *map;
1108
1109 if (isl_stream_next_token_is(s, '}')) {
1110 isl_dim *dim = isl_basic_map_get_dim(bmap);
1111 isl_basic_map_free(bmap);
1112 return isl_map_universe(dim);
1113 }
1114
1115 map = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1116 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1117 isl_map *map_i;
1118
1119 map_i = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1120 map = isl_map_union(map, map_i);
1121 }
1122
1123 isl_basic_map_free(bmap);
1124 return map;
1125 }
1126
1127 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1128 {
1129 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1130 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1131 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1132 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1133
1134 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1135 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1136 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1137
1138 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1139 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1140 isl_basic_map_dim(bmap, isl_dim_in) +
1141 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1142 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1143
1144 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1145 return 1 + pos;
1146
1147 return 0;
1148 }
1149
1150 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1151 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1152 {
1153 int j;
1154 struct isl_token *tok;
1155 int type;
1156 int k;
1157 isl_int *c;
1158 unsigned nparam;
1159 unsigned dim;
1160
1161 if (!bmap)
1162 return NULL;
1163
1164 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1165 dim = isl_basic_map_dim(bmap, isl_dim_out);
1166
1167 tok = isl_stream_next_token(s);
1168 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1169 isl_stream_error(s, tok, "expecting coefficient");
1170 if (tok)
1171 isl_stream_push_token(s, tok);
1172 goto error;
1173 }
1174 if (!tok->on_new_line) {
1175 isl_stream_error(s, tok, "coefficient should appear on new line");
1176 isl_stream_push_token(s, tok);
1177 goto error;
1178 }
1179
1180 type = isl_int_get_si(tok->u.v);
1181 isl_token_free(tok);
1182
1183 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1184 if (type == 0) {
1185 k = isl_basic_map_alloc_equality(bmap);
1186 c = bmap->eq[k];
1187 } else {
1188 k = isl_basic_map_alloc_inequality(bmap);
1189 c = bmap->ineq[k];
1190 }
1191 if (k < 0)
1192 goto error;
1193
1194 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1195 int pos;
1196 tok = isl_stream_next_token(s);
1197 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1198 isl_stream_error(s, tok, "expecting coefficient");
1199 if (tok)
1200 isl_stream_push_token(s, tok);
1201 goto error;
1202 }
1203 if (tok->on_new_line) {
1204 isl_stream_error(s, tok,
1205 "coefficient should not appear on new line");
1206 isl_stream_push_token(s, tok);
1207 goto error;
1208 }
1209 pos = polylib_pos_to_isl_pos(bmap, j);
1210 isl_int_set(c[pos], tok->u.v);
1211 isl_token_free(tok);
1212 }
1213
1214 return bmap;
1215 error:
1216 isl_basic_map_free(bmap);
1217 return NULL;
1218 }
1219
1220 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1221 int nparam)
1222 {
1223 int i;
1224 struct isl_token *tok;
1225 struct isl_token *tok2;
1226 int n_row, n_col;
1227 int on_new_line;
1228 unsigned in = 0, out, local = 0;
1229 struct isl_basic_map *bmap = NULL;
1230
1231 if (nparam < 0)
1232 nparam = 0;
1233
1234 tok = isl_stream_next_token(s);
1235 if (!tok) {
1236 isl_stream_error(s, NULL, "unexpected EOF");
1237 return NULL;
1238 }
1239 tok2 = isl_stream_next_token(s);
1240 if (!tok2) {
1241 isl_token_free(tok);
1242 isl_stream_error(s, NULL, "unexpected EOF");
1243 return NULL;
1244 }
1245 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1246 isl_stream_push_token(s, tok2);
1247 isl_stream_push_token(s, tok);
1248 isl_stream_error(s, NULL,
1249 "expecting constraint matrix dimensions");
1250 return NULL;
1251 }
1252 n_row = isl_int_get_si(tok->u.v);
1253 n_col = isl_int_get_si(tok2->u.v);
1254 on_new_line = tok2->on_new_line;
1255 isl_token_free(tok2);
1256 isl_token_free(tok);
1257 isl_assert(s->ctx, !on_new_line, return NULL);
1258 isl_assert(s->ctx, n_row >= 0, return NULL);
1259 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1260 tok = isl_stream_next_token_on_same_line(s);
1261 if (tok) {
1262 if (tok->type != ISL_TOKEN_VALUE) {
1263 isl_stream_error(s, tok,
1264 "expecting number of output dimensions");
1265 isl_stream_push_token(s, tok);
1266 goto error;
1267 }
1268 out = isl_int_get_si(tok->u.v);
1269 isl_token_free(tok);
1270
1271 tok = isl_stream_next_token_on_same_line(s);
1272 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1273 isl_stream_error(s, tok,
1274 "expecting number of input dimensions");
1275 if (tok)
1276 isl_stream_push_token(s, tok);
1277 goto error;
1278 }
1279 in = isl_int_get_si(tok->u.v);
1280 isl_token_free(tok);
1281
1282 tok = isl_stream_next_token_on_same_line(s);
1283 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1284 isl_stream_error(s, tok,
1285 "expecting number of existentials");
1286 if (tok)
1287 isl_stream_push_token(s, tok);
1288 goto error;
1289 }
1290 local = isl_int_get_si(tok->u.v);
1291 isl_token_free(tok);
1292
1293 tok = isl_stream_next_token_on_same_line(s);
1294 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1295 isl_stream_error(s, tok,
1296 "expecting number of parameters");
1297 if (tok)
1298 isl_stream_push_token(s, tok);
1299 goto error;
1300 }
1301 nparam = isl_int_get_si(tok->u.v);
1302 isl_token_free(tok);
1303 if (n_col != 1 + out + in + local + nparam + 1) {
1304 isl_stream_error(s, NULL,
1305 "dimensions don't match");
1306 goto error;
1307 }
1308 } else
1309 out = n_col - 2 - nparam;
1310 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1311 if (!bmap)
1312 return NULL;
1313
1314 for (i = 0; i < local; ++i) {
1315 int k = isl_basic_map_alloc_div(bmap);
1316 if (k < 0)
1317 goto error;
1318 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1319 }
1320
1321 for (i = 0; i < n_row; ++i)
1322 bmap = basic_map_read_polylib_constraint(s, bmap);
1323
1324 tok = isl_stream_next_token_on_same_line(s);
1325 if (tok) {
1326 isl_stream_error(s, tok, "unexpected extra token on line");
1327 isl_stream_push_token(s, tok);
1328 goto error;
1329 }
1330
1331 bmap = isl_basic_map_simplify(bmap);
1332 bmap = isl_basic_map_finalize(bmap);
1333 return bmap;
1334 error:
1335 isl_basic_map_free(bmap);
1336 return NULL;
1337 }
1338
1339 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1340 {
1341 struct isl_token *tok;
1342 struct isl_token *tok2;
1343 int i, n;
1344 struct isl_map *map;
1345
1346 tok = isl_stream_next_token(s);
1347 if (!tok) {
1348 isl_stream_error(s, NULL, "unexpected EOF");
1349 return NULL;
1350 }
1351 tok2 = isl_stream_next_token_on_same_line(s);
1352 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1353 isl_stream_push_token(s, tok2);
1354 isl_stream_push_token(s, tok);
1355 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1356 }
1357 if (tok2) {
1358 isl_stream_error(s, tok2, "unexpected token");
1359 isl_stream_push_token(s, tok2);
1360 isl_stream_push_token(s, tok);
1361 return NULL;
1362 }
1363 n = isl_int_get_si(tok->u.v);
1364 isl_token_free(tok);
1365
1366 isl_assert(s->ctx, n >= 1, return NULL);
1367
1368 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1369
1370 for (i = 1; map && i < n; ++i)
1371 map = isl_map_union(map,
1372 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1373
1374 return map;
1375 }
1376
1377 static int optional_power(struct isl_stream *s)
1378 {
1379 int pow;
1380 struct isl_token *tok;
1381
1382 tok = isl_stream_next_token(s);
1383 if (!tok)
1384 return 1;
1385 if (tok->type != '^') {
1386 isl_stream_push_token(s, tok);
1387 return 1;
1388 }
1389 isl_token_free(tok);
1390 tok = isl_stream_next_token(s);
1391 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1392 isl_stream_error(s, tok, "expecting exponent");
1393 if (tok)
1394 isl_stream_push_token(s, tok);
1395 return 1;
1396 }
1397 pow = isl_int_get_si(tok->u.v);
1398 isl_token_free(tok);
1399 return pow;
1400 }
1401
1402 static __isl_give isl_div *read_div(struct isl_stream *s,
1403 __isl_take isl_dim *dim, struct vars *v)
1404 {
1405 int n;
1406 isl_basic_map *bmap;
1407
1408 n = v->n;
1409 bmap = isl_basic_map_universe(dim);
1410
1411 if (vars_add_anon(v) < 0)
1412 goto error;
1413 if (read_div_definition(s, v) < 0)
1414 goto error;
1415 bmap = add_divs(bmap, v);
1416 bmap = isl_basic_map_order_divs(bmap);
1417 if (!bmap)
1418 goto error;
1419 vars_drop(v, v->n - n);
1420
1421 return isl_basic_map_div(bmap, bmap->n_div - 1);
1422 error:
1423 isl_basic_map_free(bmap);
1424 return NULL;
1425 }
1426
1427 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1428 __isl_keep isl_basic_map *bmap, struct vars *v);
1429
1430 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1431 __isl_keep isl_basic_map *bmap, struct vars *v)
1432 {
1433 struct isl_qpolynomial *qp;
1434 struct isl_token *tok;
1435
1436 tok = next_token(s);
1437 if (!tok) {
1438 isl_stream_error(s, NULL, "unexpected EOF");
1439 return NULL;
1440 }
1441 if (tok->type == '(') {
1442 int pow;
1443
1444 isl_token_free(tok);
1445 qp = read_term(s, bmap, v);
1446 if (!qp)
1447 return NULL;
1448 if (isl_stream_eat(s, ')'))
1449 goto error;
1450 pow = optional_power(s);
1451 qp = isl_qpolynomial_pow(qp, pow);
1452 } else if (tok->type == ISL_TOKEN_VALUE) {
1453 struct isl_token *tok2;
1454 tok2 = isl_stream_next_token(s);
1455 if (tok2 && tok2->type == '/') {
1456 isl_token_free(tok2);
1457 tok2 = next_token(s);
1458 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1459 isl_stream_error(s, tok2, "expected denominator");
1460 isl_token_free(tok);
1461 isl_token_free(tok2);
1462 return NULL;
1463 }
1464 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1465 tok->u.v, tok2->u.v);
1466 isl_token_free(tok2);
1467 } else {
1468 isl_stream_push_token(s, tok2);
1469 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1470 tok->u.v);
1471 }
1472 isl_token_free(tok);
1473 } else if (tok->type == ISL_TOKEN_INFTY) {
1474 isl_token_free(tok);
1475 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1476 } else if (tok->type == ISL_TOKEN_NAN) {
1477 isl_token_free(tok);
1478 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1479 } else if (tok->type == ISL_TOKEN_IDENT) {
1480 int n = v->n;
1481 int pos = vars_pos(v, tok->u.s, -1);
1482 int pow;
1483 if (pos < 0) {
1484 isl_token_free(tok);
1485 return NULL;
1486 }
1487 if (pos >= n) {
1488 vars_drop(v, v->n - n);
1489 isl_stream_error(s, tok, "unknown identifier");
1490 isl_token_free(tok);
1491 return NULL;
1492 }
1493 isl_token_free(tok);
1494 pow = optional_power(s);
1495 qp = isl_qpolynomial_var_pow(isl_basic_map_get_dim(bmap), pos, pow);
1496 } else if (tok->type == '[') {
1497 isl_div *div;
1498 int pow;
1499
1500 isl_stream_push_token(s, tok);
1501 div = read_div(s, isl_basic_map_get_dim(bmap), v);
1502 pow = optional_power(s);
1503 qp = isl_qpolynomial_div_pow(div, pow);
1504 } else if (tok->type == '-') {
1505 struct isl_qpolynomial *qp2;
1506
1507 isl_token_free(tok);
1508 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1509 s->ctx->negone);
1510 qp2 = read_factor(s, bmap, v);
1511 qp = isl_qpolynomial_mul(qp, qp2);
1512 } else {
1513 isl_stream_error(s, tok, "unexpected isl_token");
1514 isl_stream_push_token(s, tok);
1515 return NULL;
1516 }
1517
1518 if (isl_stream_eat_if_available(s, '*') ||
1519 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1520 struct isl_qpolynomial *qp2;
1521
1522 qp2 = read_factor(s, bmap, v);
1523 qp = isl_qpolynomial_mul(qp, qp2);
1524 }
1525
1526 return qp;
1527 error:
1528 isl_qpolynomial_free(qp);
1529 return NULL;
1530 }
1531
1532 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1533 __isl_keep isl_basic_map *bmap, struct vars *v)
1534 {
1535 struct isl_token *tok;
1536 struct isl_qpolynomial *qp;
1537
1538 qp = read_factor(s, bmap, v);
1539
1540 for (;;) {
1541 tok = next_token(s);
1542 if (!tok)
1543 return qp;
1544
1545 if (tok->type == '+') {
1546 struct isl_qpolynomial *qp2;
1547
1548 isl_token_free(tok);
1549 qp2 = read_factor(s, bmap, v);
1550 qp = isl_qpolynomial_add(qp, qp2);
1551 } else if (tok->type == '-') {
1552 struct isl_qpolynomial *qp2;
1553
1554 isl_token_free(tok);
1555 qp2 = read_factor(s, bmap, v);
1556 qp = isl_qpolynomial_sub(qp, qp2);
1557 } else if (tok->type == ISL_TOKEN_VALUE &&
1558 isl_int_is_neg(tok->u.v)) {
1559 struct isl_qpolynomial *qp2;
1560
1561 isl_stream_push_token(s, tok);
1562 qp2 = read_factor(s, bmap, v);
1563 qp = isl_qpolynomial_add(qp, qp2);
1564 } else {
1565 isl_stream_push_token(s, tok);
1566 break;
1567 }
1568 }
1569
1570 return qp;
1571 }
1572
1573 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1574 __isl_take isl_basic_map *bmap, struct vars *v)
1575 {
1576 struct isl_token *tok;
1577 struct isl_map *map;
1578
1579 tok = isl_stream_next_token(s);
1580 if (!tok) {
1581 isl_stream_error(s, NULL, "unexpected EOF");
1582 goto error;
1583 }
1584 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1585 if (tok->type == ':' ||
1586 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1587 isl_token_free(tok);
1588 map = isl_map_intersect(map,
1589 read_disjuncts(s, v, isl_basic_map_copy(bmap)));
1590 } else
1591 isl_stream_push_token(s, tok);
1592
1593 isl_basic_map_free(bmap);
1594
1595 return map;
1596 error:
1597 isl_basic_map_free(bmap);
1598 return NULL;
1599 }
1600
1601 static struct isl_obj obj_read_poly(struct isl_stream *s,
1602 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1603 {
1604 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1605 struct isl_pw_qpolynomial *pwqp;
1606 struct isl_qpolynomial *qp;
1607 struct isl_map *map;
1608 struct isl_set *set;
1609
1610 qp = read_term(s, bmap, v);
1611 map = read_optional_disjuncts(s, bmap, v);
1612 set = isl_map_range(map);
1613
1614 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1615
1616 vars_drop(v, v->n - n);
1617
1618 obj.v = pwqp;
1619 return obj;
1620 }
1621
1622 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1623 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1624 {
1625 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1626 struct isl_obj obj_p;
1627 isl_qpolynomial *qp;
1628 isl_qpolynomial_fold *fold = NULL;
1629 isl_pw_qpolynomial_fold *pwf;
1630 isl_map *map;
1631 isl_set *set;
1632
1633 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1634 return obj_read_poly(s, bmap, v, n);
1635
1636 if (isl_stream_eat(s, '('))
1637 goto error;
1638
1639 qp = read_term(s, bmap, v);
1640 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1641
1642 while (isl_stream_eat_if_available(s, ',')) {
1643 isl_qpolynomial_fold *fold_i;
1644 qp = read_term(s, bmap, v);
1645 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1646 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1647 }
1648
1649 if (isl_stream_eat(s, ')'))
1650 goto error;
1651
1652 map = read_optional_disjuncts(s, bmap, v);
1653 set = isl_map_range(map);
1654 pwf = isl_pw_qpolynomial_fold_alloc(isl_fold_max, set, fold);
1655
1656 vars_drop(v, v->n - n);
1657
1658 obj.v = pwf;
1659 return obj;
1660 error:
1661 isl_basic_map_free(bmap);
1662 isl_qpolynomial_fold_free(fold);
1663 obj.type = isl_obj_none;
1664 return obj;
1665 }
1666
1667 static int is_rational(struct isl_stream *s)
1668 {
1669 struct isl_token *tok;
1670
1671 tok = isl_stream_next_token(s);
1672 if (!tok)
1673 return 0;
1674 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1675 isl_token_free(tok);
1676 isl_stream_eat(s, ':');
1677 return 1;
1678 }
1679
1680 isl_stream_push_token(s, tok);
1681
1682 return 0;
1683 }
1684
1685 static struct isl_obj obj_read_body(struct isl_stream *s,
1686 __isl_take isl_basic_map *bmap, struct vars *v)
1687 {
1688 struct isl_map *map = NULL;
1689 struct isl_token *tok;
1690 struct isl_obj obj = { isl_obj_set, NULL };
1691 int n = v->n;
1692
1693 if (is_rational(s))
1694 bmap = isl_basic_map_set_rational(bmap);
1695
1696 if (!next_is_tuple(s))
1697 return obj_read_poly_or_fold(s, bmap, v, n);
1698
1699 bmap = read_tuple(s, bmap, isl_dim_in, v);
1700 if (!bmap)
1701 goto error;
1702 tok = isl_stream_next_token(s);
1703 if (tok && tok->type == ISL_TOKEN_TO) {
1704 obj.type = isl_obj_map;
1705 isl_token_free(tok);
1706 if (!next_is_tuple(s)) {
1707 bmap = isl_basic_map_reverse(bmap);
1708 return obj_read_poly_or_fold(s, bmap, v, n);
1709 }
1710 bmap = read_tuple(s, bmap, isl_dim_out, v);
1711 if (!bmap)
1712 goto error;
1713 } else {
1714 bmap = isl_basic_map_reverse(bmap);
1715 if (tok)
1716 isl_stream_push_token(s, tok);
1717 }
1718
1719 map = read_optional_disjuncts(s, bmap, v);
1720
1721 vars_drop(v, v->n - n);
1722
1723 obj.v = map;
1724 return obj;
1725 error:
1726 isl_basic_map_free(bmap);
1727 obj.type = isl_obj_none;
1728 return obj;
1729 }
1730
1731 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1732 {
1733 if (obj.type == isl_obj_map) {
1734 obj.v = isl_union_map_from_map(obj.v);
1735 obj.type = isl_obj_union_map;
1736 } else if (obj.type == isl_obj_set) {
1737 obj.v = isl_union_set_from_set(obj.v);
1738 obj.type = isl_obj_union_set;
1739 } else if (obj.type == isl_obj_pw_qpolynomial) {
1740 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1741 obj.type = isl_obj_union_pw_qpolynomial;
1742 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1743 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1744 obj.type = isl_obj_union_pw_qpolynomial_fold;
1745 } else
1746 isl_assert(ctx, 0, goto error);
1747 return obj;
1748 error:
1749 obj.type->free(obj.v);
1750 obj.type = isl_obj_none;
1751 return obj;
1752 }
1753
1754 static struct isl_obj obj_add(struct isl_ctx *ctx,
1755 struct isl_obj obj1, struct isl_obj obj2)
1756 {
1757 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1758 obj1 = to_union(ctx, obj1);
1759 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1760 obj2 = to_union(ctx, obj2);
1761 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1762 obj1 = to_union(ctx, obj1);
1763 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1764 obj2 = to_union(ctx, obj2);
1765 if (obj1.type == isl_obj_pw_qpolynomial &&
1766 obj2.type == isl_obj_union_pw_qpolynomial)
1767 obj1 = to_union(ctx, obj1);
1768 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1769 obj2.type == isl_obj_pw_qpolynomial)
1770 obj2 = to_union(ctx, obj2);
1771 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1772 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1773 obj1 = to_union(ctx, obj1);
1774 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1775 obj2.type == isl_obj_pw_qpolynomial_fold)
1776 obj2 = to_union(ctx, obj2);
1777 isl_assert(ctx, obj1.type == obj2.type, goto error);
1778 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
1779 obj1 = to_union(ctx, obj1);
1780 obj2 = to_union(ctx, obj2);
1781 }
1782 if (obj1.type == isl_obj_set && !isl_set_has_equal_dim(obj1.v, obj2.v)) {
1783 obj1 = to_union(ctx, obj1);
1784 obj2 = to_union(ctx, obj2);
1785 }
1786 if (obj1.type == isl_obj_pw_qpolynomial &&
1787 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
1788 obj1 = to_union(ctx, obj1);
1789 obj2 = to_union(ctx, obj2);
1790 }
1791 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1792 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
1793 obj1 = to_union(ctx, obj1);
1794 obj2 = to_union(ctx, obj2);
1795 }
1796 obj1.v = obj1.type->add(obj1.v, obj2.v);
1797 return obj1;
1798 error:
1799 obj1.type->free(obj1.v);
1800 obj2.type->free(obj2.v);
1801 obj1.type = isl_obj_none;
1802 obj1.v = NULL;
1803 return obj1;
1804 }
1805
1806 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1807 {
1808 isl_basic_map *bmap = NULL;
1809 struct isl_token *tok;
1810 struct vars *v = NULL;
1811 struct isl_obj obj = { isl_obj_set, NULL };
1812
1813 tok = next_token(s);
1814 if (!tok) {
1815 isl_stream_error(s, NULL, "unexpected EOF");
1816 goto error;
1817 }
1818 if (tok->type == ISL_TOKEN_VALUE) {
1819 struct isl_token *tok2;
1820 struct isl_map *map;
1821
1822 tok2 = isl_stream_next_token(s);
1823 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
1824 isl_int_is_neg(tok2->u.v)) {
1825 if (tok2)
1826 isl_stream_push_token(s, tok2);
1827 obj.type = isl_obj_int;
1828 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
1829 isl_token_free(tok);
1830 return obj;
1831 }
1832 isl_stream_push_token(s, tok2);
1833 isl_stream_push_token(s, tok);
1834 map = map_read_polylib(s, nparam);
1835 if (!map)
1836 goto error;
1837 if (isl_map_dim(map, isl_dim_in) > 0)
1838 obj.type = isl_obj_map;
1839 obj.v = map;
1840 return obj;
1841 }
1842 v = vars_new(s->ctx);
1843 if (!v) {
1844 isl_stream_push_token(s, tok);
1845 goto error;
1846 }
1847 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
1848 if (tok->type == '[') {
1849 isl_stream_push_token(s, tok);
1850 bmap = read_tuple(s, bmap, isl_dim_param, v);
1851 if (!bmap)
1852 goto error;
1853 if (nparam >= 0)
1854 isl_assert(s->ctx, nparam == v->n, goto error);
1855 tok = isl_stream_next_token(s);
1856 if (!tok || tok->type != ISL_TOKEN_TO) {
1857 isl_stream_error(s, tok, "expecting '->'");
1858 if (tok)
1859 isl_stream_push_token(s, tok);
1860 goto error;
1861 }
1862 isl_token_free(tok);
1863 tok = isl_stream_next_token(s);
1864 } else if (nparam > 0)
1865 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
1866 if (!tok || tok->type != '{') {
1867 isl_stream_error(s, tok, "expecting '{'");
1868 if (tok)
1869 isl_stream_push_token(s, tok);
1870 goto error;
1871 }
1872 isl_token_free(tok);
1873
1874 tok = isl_stream_next_token(s);
1875 if (!tok)
1876 ;
1877 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1878 isl_token_free(tok);
1879 if (isl_stream_eat(s, '='))
1880 goto error;
1881 bmap = read_tuple(s, bmap, isl_dim_param, v);
1882 if (!bmap)
1883 goto error;
1884 if (nparam >= 0)
1885 isl_assert(s->ctx, nparam == v->n, goto error);
1886 } else if (tok->type == '}') {
1887 obj.type = isl_obj_union_set;
1888 obj.v = isl_union_set_empty(isl_basic_map_get_dim(bmap));
1889 isl_token_free(tok);
1890 goto done;
1891 } else
1892 isl_stream_push_token(s, tok);
1893
1894 for (;;) {
1895 struct isl_obj o;
1896 tok = NULL;
1897 o = obj_read_body(s, isl_basic_map_copy(bmap), v);
1898 if (o.type == isl_obj_none || !o.v)
1899 goto error;
1900 if (!obj.v)
1901 obj = o;
1902 else {
1903 obj = obj_add(s->ctx, obj, o);
1904 if (obj.type == isl_obj_none || !obj.v)
1905 goto error;
1906 }
1907 tok = isl_stream_next_token(s);
1908 if (!tok || tok->type != ';')
1909 break;
1910 isl_token_free(tok);
1911 if (isl_stream_next_token_is(s, '}')) {
1912 tok = isl_stream_next_token(s);
1913 break;
1914 }
1915 }
1916
1917 if (tok && tok->type == '}') {
1918 isl_token_free(tok);
1919 } else {
1920 isl_stream_error(s, tok, "unexpected isl_token");
1921 if (tok)
1922 isl_token_free(tok);
1923 goto error;
1924 }
1925 done:
1926 vars_free(v);
1927 isl_basic_map_free(bmap);
1928
1929 return obj;
1930 error:
1931 isl_basic_map_free(bmap);
1932 obj.type->free(obj.v);
1933 if (v)
1934 vars_free(v);
1935 obj.v = NULL;
1936 return obj;
1937 }
1938
1939 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1940 {
1941 return obj_read(s, -1);
1942 }
1943
1944 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
1945 {
1946 struct isl_obj obj;
1947 struct isl_map *map;
1948
1949 obj = obj_read(s, nparam);
1950 if (obj.v)
1951 isl_assert(s->ctx, obj.type == isl_obj_map ||
1952 obj.type == isl_obj_set, goto error);
1953
1954 return obj.v;
1955 error:
1956 obj.type->free(obj.v);
1957 return NULL;
1958 }
1959
1960 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
1961 {
1962 struct isl_obj obj;
1963 struct isl_set *set;
1964
1965 obj = obj_read(s, nparam);
1966 if (obj.v)
1967 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
1968
1969 return obj.v;
1970 error:
1971 obj.type->free(obj.v);
1972 return NULL;
1973 }
1974
1975 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
1976 {
1977 struct isl_obj obj;
1978 isl_union_map *umap;
1979
1980 obj = obj_read(s, -1);
1981 if (obj.type == isl_obj_map) {
1982 obj.type = isl_obj_union_map;
1983 obj.v = isl_union_map_from_map(obj.v);
1984 }
1985 if (obj.type == isl_obj_set) {
1986 obj.type = isl_obj_union_set;
1987 obj.v = isl_union_set_from_set(obj.v);
1988 }
1989 if (obj.v)
1990 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
1991 obj.type == isl_obj_union_set, goto error);
1992
1993 return obj.v;
1994 error:
1995 obj.type->free(obj.v);
1996 return NULL;
1997 }
1998
1999 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2000 {
2001 struct isl_obj obj;
2002 isl_union_set *uset;
2003
2004 obj = obj_read(s, -1);
2005 if (obj.type == isl_obj_set) {
2006 obj.type = isl_obj_union_set;
2007 obj.v = isl_union_set_from_set(obj.v);
2008 }
2009 if (obj.v)
2010 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2011
2012 return obj.v;
2013 error:
2014 obj.type->free(obj.v);
2015 return NULL;
2016 }
2017
2018 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
2019 {
2020 struct isl_obj obj;
2021 struct isl_map *map;
2022 struct isl_basic_map *bmap;
2023
2024 obj = obj_read(s, nparam);
2025 map = obj.v;
2026 if (!map)
2027 return NULL;
2028
2029 isl_assert(map->ctx, map->n <= 1, goto error);
2030
2031 if (map->n == 0)
2032 bmap = isl_basic_map_empty_like_map(map);
2033 else
2034 bmap = isl_basic_map_copy(map->p[0]);
2035
2036 isl_map_free(map);
2037
2038 return bmap;
2039 error:
2040 isl_map_free(map);
2041 return NULL;
2042 }
2043
2044 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2045 FILE *input, int nparam)
2046 {
2047 struct isl_basic_map *bmap;
2048 struct isl_stream *s = isl_stream_new_file(ctx, input);
2049 if (!s)
2050 return NULL;
2051 bmap = basic_map_read(s, nparam);
2052 isl_stream_free(s);
2053 return bmap;
2054 }
2055
2056 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2057 FILE *input, int nparam)
2058 {
2059 struct isl_basic_map *bmap;
2060 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
2061 if (!bmap)
2062 return NULL;
2063 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2064 return (struct isl_basic_set *)bmap;
2065 error:
2066 isl_basic_map_free(bmap);
2067 return NULL;
2068 }
2069
2070 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2071 const char *str, int nparam)
2072 {
2073 struct isl_basic_map *bmap;
2074 struct isl_stream *s = isl_stream_new_str(ctx, str);
2075 if (!s)
2076 return NULL;
2077 bmap = basic_map_read(s, nparam);
2078 isl_stream_free(s);
2079 return bmap;
2080 }
2081
2082 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2083 const char *str, int nparam)
2084 {
2085 struct isl_basic_map *bmap;
2086 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
2087 if (!bmap)
2088 return NULL;
2089 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2090 return (struct isl_basic_set *)bmap;
2091 error:
2092 isl_basic_map_free(bmap);
2093 return NULL;
2094 }
2095
2096 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2097 FILE *input, int nparam)
2098 {
2099 struct isl_map *map;
2100 struct isl_stream *s = isl_stream_new_file(ctx, input);
2101 if (!s)
2102 return NULL;
2103 map = isl_stream_read_map(s, nparam);
2104 isl_stream_free(s);
2105 return map;
2106 }
2107
2108 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2109 const char *str, int nparam)
2110 {
2111 struct isl_map *map;
2112 struct isl_stream *s = isl_stream_new_str(ctx, str);
2113 if (!s)
2114 return NULL;
2115 map = isl_stream_read_map(s, nparam);
2116 isl_stream_free(s);
2117 return map;
2118 }
2119
2120 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2121 FILE *input, int nparam)
2122 {
2123 struct isl_map *map;
2124 map = isl_map_read_from_file(ctx, input, nparam);
2125 if (!map)
2126 return NULL;
2127 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2128 return (struct isl_set *)map;
2129 error:
2130 isl_map_free(map);
2131 return NULL;
2132 }
2133
2134 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2135 const char *str, int nparam)
2136 {
2137 struct isl_map *map;
2138 map = isl_map_read_from_str(ctx, str, nparam);
2139 if (!map)
2140 return NULL;
2141 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2142 return (struct isl_set *)map;
2143 error:
2144 isl_map_free(map);
2145 return NULL;
2146 }
2147
2148 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2149 FILE *input)
2150 {
2151 isl_union_map *umap;
2152 struct isl_stream *s = isl_stream_new_file(ctx, input);
2153 if (!s)
2154 return NULL;
2155 umap = isl_stream_read_union_map(s);
2156 isl_stream_free(s);
2157 return umap;
2158 }
2159
2160 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2161 const char *str)
2162 {
2163 isl_union_map *umap;
2164 struct isl_stream *s = isl_stream_new_str(ctx, str);
2165 if (!s)
2166 return NULL;
2167 umap = isl_stream_read_union_map(s);
2168 isl_stream_free(s);
2169 return umap;
2170 }
2171
2172 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2173 FILE *input)
2174 {
2175 isl_union_set *uset;
2176 struct isl_stream *s = isl_stream_new_file(ctx, input);
2177 if (!s)
2178 return NULL;
2179 uset = isl_stream_read_union_set(s);
2180 isl_stream_free(s);
2181 return uset;
2182 }
2183
2184 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2185 const char *str)
2186 {
2187 isl_union_set *uset;
2188 struct isl_stream *s = isl_stream_new_str(ctx, str);
2189 if (!s)
2190 return NULL;
2191 uset = isl_stream_read_union_set(s);
2192 isl_stream_free(s);
2193 return uset;
2194 }
2195
2196 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2197 {
2198 struct isl_vec *vec = NULL;
2199 struct isl_token *tok;
2200 unsigned size;
2201 int j;
2202
2203 tok = isl_stream_next_token(s);
2204 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2205 isl_stream_error(s, tok, "expecting vector length");
2206 goto error;
2207 }
2208
2209 size = isl_int_get_si(tok->u.v);
2210 isl_token_free(tok);
2211
2212 vec = isl_vec_alloc(s->ctx, size);
2213
2214 for (j = 0; j < size; ++j) {
2215 tok = isl_stream_next_token(s);
2216 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2217 isl_stream_error(s, tok, "expecting constant value");
2218 goto error;
2219 }
2220 isl_int_set(vec->el[j], tok->u.v);
2221 isl_token_free(tok);
2222 }
2223
2224 return vec;
2225 error:
2226 isl_token_free(tok);
2227 isl_vec_free(vec);
2228 return NULL;
2229 }
2230
2231 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2232 {
2233 return isl_vec_read_polylib(s);
2234 }
2235
2236 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2237 {
2238 isl_vec *v;
2239 struct isl_stream *s = isl_stream_new_file(ctx, input);
2240 if (!s)
2241 return NULL;
2242 v = vec_read(s);
2243 isl_stream_free(s);
2244 return v;
2245 }
2246
2247 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2248 struct isl_stream *s)
2249 {
2250 struct isl_obj obj;
2251 struct isl_pw_qpolynomial *pwqp;
2252
2253 obj = obj_read(s, -1);
2254 if (obj.v)
2255 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2256 goto error);
2257
2258 return obj.v;
2259 error:
2260 obj.type->free(obj.v);
2261 return NULL;
2262 }
2263
2264 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2265 const char *str)
2266 {
2267 isl_pw_qpolynomial *pwqp;
2268 struct isl_stream *s = isl_stream_new_str(ctx, str);
2269 if (!s)
2270 return NULL;
2271 pwqp = isl_stream_read_pw_qpolynomial(s);
2272 isl_stream_free(s);
2273 return pwqp;
2274 }
Integer set library