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Merge branch 'maint'
[isl.git] / isl_input.c
blobdca1442839bbe673f08aaef4d8d603295dd68105
1 /*
2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
4 *
5 * Use of this software is governed by the GNU LGPLv2.1 license
6 *
7 * Written by Sven Verdoolaege, K.U.Leuven, Departement
8 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
9 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
10 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
11 */
12
13 #include <ctype.h>
14 #include <stdio.h>
15 #include <string.h>
16 #include <strings.h>
17 #include <isl/set.h>
18 #include <isl/seq.h>
19 #include <isl/div.h>
20 #include <isl/stream.h>
21 #include "isl_map_private.h"
22 #include <isl/obj.h>
23 #include "isl_polynomial_private.h"
24 #include <isl/union_map.h>
25 #include <isl_mat_private.h>
26
27 struct variable {
28 char *name;
29 int pos;
30 isl_vec *def;
31 struct variable *next;
32 };
33
34 struct vars {
35 struct isl_ctx *ctx;
36 int n;
37 struct variable *v;
38 };
39
40 static struct vars *vars_new(struct isl_ctx *ctx)
41 {
42 struct vars *v;
43 v = isl_alloc_type(ctx, struct vars);
44 if (!v)
45 return NULL;
46 v->ctx = ctx;
47 v->n = 0;
48 v->v = NULL;
49 return v;
50 }
51
52 static void variable_free(struct variable *var)
53 {
54 while (var) {
55 struct variable *next = var->next;
56 isl_vec_free(var->def);
57 free(var->name);
58 free(var);
59 var = next;
60 }
61 }
62
63 static void vars_free(struct vars *v)
64 {
65 if (!v)
66 return;
67 variable_free(v->v);
68 free(v);
69 }
70
71 static void vars_drop(struct vars *v, int n)
72 {
73 struct variable *var;
74
75 if (!v || !v->v)
76 return;
77
78 v->n -= n;
79
80 var = v->v;
81 while (--n >= 0) {
82 struct variable *next = var->next;
83 isl_vec_free(var->def);
84 free(var->name);
85 free(var);
86 var = next;
87 }
88 v->v = var;
89 }
90
91 static struct variable *variable_new(struct vars *v, const char *name, int len,
92 int pos)
93 {
94 struct variable *var;
95 var = isl_alloc_type(v->ctx, struct variable);
96 if (!var)
97 goto error;
98 var->name = strdup(name);
99 var->name[len] = '\0';
100 var->pos = pos;
101 var->def = NULL;
102 var->next = v->v;
103 return var;
104 error:
105 variable_free(v->v);
106 return NULL;
107 }
108
109 static int vars_pos(struct vars *v, const char *s, int len)
110 {
111 int pos;
112 struct variable *q;
113
114 if (len == -1)
115 len = strlen(s);
116 for (q = v->v; q; q = q->next) {
117 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
118 break;
119 }
120 if (q)
121 pos = q->pos;
122 else {
123 pos = v->n;
124 v->v = variable_new(v, s, len, v->n);
125 if (!v->v)
126 return -1;
127 v->n++;
128 }
129 return pos;
130 }
131
132 static int vars_add_anon(struct vars *v)
133 {
134 v->v = variable_new(v, "", 0, v->n);
135
136 if (!v->v)
137 return -1;
138 v->n++;
139
140 return 0;
141 }
142
143 static __isl_give isl_basic_map *set_name(__isl_take isl_basic_map *bmap,
144 enum isl_dim_type type, unsigned pos, char *name)
145 {
146 char *prime;
147
148 if (!bmap)
149 return NULL;
150 if (!name)
151 return bmap;
152
153 prime = strchr(name, '\'');
154 if (prime)
155 *prime = '\0';
156 bmap = isl_basic_map_set_dim_name(bmap, type, pos, name);
157 if (prime)
158 *prime = '\'';
159
160 return bmap;
161 }
162
163 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
164 {
165 struct isl_token *tok;
166
167 tok = isl_stream_next_token(s);
168 if (!tok || tok->type != ISL_TOKEN_VALUE) {
169 isl_stream_error(s, tok, "expecting constant value");
170 goto error;
171 }
172
173 isl_int_mul(*f, *f, tok->u.v);
174
175 isl_token_free(tok);
176
177 if (isl_stream_eat_if_available(s, '*'))
178 return accept_cst_factor(s, f);
179
180 return 0;
181 error:
182 isl_token_free(tok);
183 return -1;
184 }
185
186 /* Given an affine expression aff, return an affine expression
187 * for aff % d, with d the next token on the stream, which is
188 * assumed to be a constant.
189 *
190 * We introduce an integer division q = [aff/d] and the result
191 * is set to aff - d q.
192 */
193 static __isl_give isl_vec *affine_mod(struct isl_stream *s,
194 struct vars *v, __isl_take isl_vec *aff)
195 {
196 struct isl_token *tok;
197 struct variable *var;
198 isl_vec *mod;
199
200 tok = isl_stream_next_token(s);
201 if (!tok || tok->type != ISL_TOKEN_VALUE) {
202 isl_stream_error(s, tok, "expecting constant value");
203 goto error;
204 }
205
206 if (vars_add_anon(v) < 0)
207 goto error;
208
209 var = v->v;
210
211 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
212 if (!var->def)
213 goto error;
214 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
215 isl_int_set_si(var->def->el[1 + aff->size], 0);
216 isl_int_set(var->def->el[0], tok->u.v);
217
218 mod = isl_vec_alloc(v->ctx, 1 + v->n);
219 if (!mod)
220 goto error;
221
222 isl_seq_cpy(mod->el, aff->el, aff->size);
223 isl_int_neg(mod->el[aff->size], tok->u.v);
224
225 isl_vec_free(aff);
226 isl_token_free(tok);
227 return mod;
228 error:
229 isl_vec_free(aff);
230 isl_token_free(tok);
231 return NULL;
232 }
233
234 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v);
235 static int read_div_definition(struct isl_stream *s, struct vars *v);
236
237 static __isl_give isl_vec *accept_affine_factor(struct isl_stream *s,
238 struct vars *v)
239 {
240 struct isl_token *tok = NULL;
241 isl_vec *aff = NULL;
242
243 tok = isl_stream_next_token(s);
244 if (!tok) {
245 isl_stream_error(s, NULL, "unexpected EOF");
246 goto error;
247 }
248 if (tok->type == ISL_TOKEN_IDENT) {
249 int n = v->n;
250 int pos = vars_pos(v, tok->u.s, -1);
251 if (pos < 0)
252 goto error;
253 if (pos >= n) {
254 isl_stream_error(s, tok, "unknown identifier");
255 goto error;
256 }
257
258 aff = isl_vec_alloc(v->ctx, 1 + v->n);
259 if (!aff)
260 goto error;
261 isl_seq_clr(aff->el, aff->size);
262 isl_int_set_si(aff->el[1 + pos], 1);
263 isl_token_free(tok);
264 } else if (tok->type == ISL_TOKEN_VALUE) {
265 if (isl_stream_eat_if_available(s, '*')) {
266 aff = accept_affine_factor(s, v);
267 aff = isl_vec_scale(aff, tok->u.v);
268 } else {
269 aff = isl_vec_alloc(v->ctx, 1 + v->n);
270 if (!aff)
271 goto error;
272 isl_seq_clr(aff->el, aff->size);
273 isl_int_set(aff->el[0], tok->u.v);
274 }
275 isl_token_free(tok);
276 } else if (tok->type == '(') {
277 isl_token_free(tok);
278 tok = NULL;
279 aff = accept_affine(s, v);
280 if (!aff)
281 goto error;
282 if (isl_stream_eat(s, ')'))
283 goto error;
284 } else if (tok->type == '[') {
285 if (vars_add_anon(v) < 0)
286 goto error;
287 aff = isl_vec_alloc(v->ctx, 1 + v->n);
288 if (!aff)
289 goto error;
290 isl_seq_clr(aff->el, aff->size);
291 isl_int_set_si(aff->el[1 + v->n - 1], 1);
292 isl_stream_push_token(s, tok);
293 tok = NULL;
294 if (read_div_definition(s, v) < 0)
295 goto error;
296 } else {
297 isl_stream_error(s, tok, "expecting factor");
298 goto error;
299 }
300 if (isl_stream_eat_if_available(s, '%'))
301 return affine_mod(s, v, aff);
302 if (isl_stream_eat_if_available(s, '*')) {
303 isl_int f;
304 isl_int_init(f);
305 isl_int_set_si(f, 1);
306 if (accept_cst_factor(s, &f) < 0) {
307 isl_int_clear(f);
308 goto error2;
309 }
310 aff = isl_vec_scale(aff, f);
311 isl_int_clear(f);
312 }
313
314 return aff;
315 error:
316 isl_token_free(tok);
317 error2:
318 isl_vec_free(aff);
319 return NULL;
320 }
321
322 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
323 {
324 struct isl_token *tok = NULL;
325 struct isl_vec *aff;
326 int sign = 1;
327
328 aff = isl_vec_alloc(v->ctx, 1 + v->n);
329 if (!aff)
330 return NULL;
331 isl_seq_clr(aff->el, aff->size);
332
333 for (;;) {
334 tok = isl_stream_next_token(s);
335 if (!tok) {
336 isl_stream_error(s, NULL, "unexpected EOF");
337 goto error;
338 }
339 if (tok->type == '-') {
340 sign = -sign;
341 isl_token_free(tok);
342 continue;
343 }
344 if (tok->type == '(' || tok->type == '[' ||
345 tok->type == ISL_TOKEN_IDENT) {
346 isl_vec *aff2;
347 isl_stream_push_token(s, tok);
348 tok = NULL;
349 aff2 = accept_affine_factor(s, v);
350 if (sign < 0)
351 aff2 = isl_vec_scale(aff2, s->ctx->negone);
352 aff = isl_vec_zero_extend(aff, 1 + v->n);
353 aff = isl_vec_add(aff, aff2);
354 if (!aff)
355 goto error;
356 sign = 1;
357 } else if (tok->type == ISL_TOKEN_VALUE) {
358 if (sign < 0)
359 isl_int_neg(tok->u.v, tok->u.v);
360 if (isl_stream_eat_if_available(s, '*') ||
361 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
362 isl_vec *aff2;
363 aff2 = accept_affine_factor(s, v);
364 aff2 = isl_vec_scale(aff2, tok->u.v);
365 aff = isl_vec_zero_extend(aff, 1 + v->n);
366 aff = isl_vec_add(aff, aff2);
367 if (!aff)
368 goto error;
369 } else {
370 isl_int_add(aff->el[0], aff->el[0], tok->u.v);
371 }
372 sign = 1;
373 } else {
374 isl_stream_error(s, tok, "unexpected isl_token");
375 isl_stream_push_token(s, tok);
376 isl_vec_free(aff);
377 return NULL;
378 }
379 isl_token_free(tok);
380
381 tok = isl_stream_next_token(s);
382 if (tok && tok->type == '-') {
383 sign = -sign;
384 isl_token_free(tok);
385 } else if (tok && tok->type == '+') {
386 /* nothing */
387 isl_token_free(tok);
388 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
389 isl_int_is_neg(tok->u.v)) {
390 isl_stream_push_token(s, tok);
391 } else {
392 if (tok)
393 isl_stream_push_token(s, tok);
394 break;
395 }
396 }
397
398 return aff;
399 error:
400 isl_token_free(tok);
401 isl_vec_free(aff);
402 return NULL;
403 }
404
405 /* Add any variables in the variable list "v" that are not already in "bmap"
406 * as existentially quantified variables in "bmap".
407 */
408 static __isl_give isl_basic_map *add_divs(__isl_take isl_basic_map *bmap,
409 struct vars *v)
410 {
411 int i;
412 int extra;
413 struct variable *var;
414
415 extra = v->n - isl_basic_map_total_dim(bmap);
416
417 if (extra == 0)
418 return bmap;
419
420 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
421 extra, 0, 2 * extra);
422
423 for (i = 0; i < extra; ++i)
424 if (isl_basic_map_alloc_div(bmap) < 0)
425 goto error;
426
427 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
428 int k = bmap->n_div - 1 - i;
429
430 isl_seq_cpy(bmap->div[k], var->def->el, var->def->size);
431 isl_seq_clr(bmap->div[k] + var->def->size,
432 2 + v->n - var->def->size);
433
434 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
435 goto error;
436 }
437
438 return bmap;
439 error:
440 isl_basic_map_free(bmap);
441 return NULL;
442 }
443
444 static __isl_give isl_basic_map *read_var_def(struct isl_stream *s,
445 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
446 {
447 isl_dim *dim;
448 isl_basic_map *def = NULL;
449 struct isl_vec *vec;
450 int k;
451 int n;
452
453 if (vars_add_anon(v) < 0)
454 goto error;
455 n = v->n;
456
457 vec = accept_affine(s, v);
458 if (!vec)
459 goto error;
460
461 dim = isl_basic_map_get_dim(bmap);
462 def = isl_basic_map_universe(dim);
463 def = add_divs(def, v);
464 def = isl_basic_map_extend_constraints(def, 1, 0);
465 k = isl_basic_map_alloc_equality(def);
466 if (k >= 0) {
467 isl_seq_cpy(def->eq[k], vec->el, vec->size);
468 isl_int_set_si(def->eq[k][1 + n - 1], -1);
469 }
470 isl_vec_free(vec);
471 if (k < 0)
472 goto error;
473
474 vars_drop(v, v->n - n);
475
476 def = isl_basic_map_simplify(def);
477 def = isl_basic_map_finalize(def);
478 bmap = isl_basic_map_intersect(bmap, def);
479 return bmap;
480 error:
481 isl_basic_map_free(bmap);
482 isl_basic_map_free(def);
483 return NULL;
484 }
485
486 static __isl_give isl_basic_map *read_var_list(struct isl_stream *s,
487 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
488 {
489 int i = 0;
490 struct isl_token *tok;
491
492 while ((tok = isl_stream_next_token(s)) != NULL) {
493 int new_name = 0;
494
495 if (tok->type == ISL_TOKEN_IDENT) {
496 int n = v->n;
497 int p = vars_pos(v, tok->u.s, -1);
498 if (p < 0)
499 goto error;
500 new_name = p >= n;
501 }
502
503 if (new_name) {
504 bmap = isl_basic_map_add(bmap, type, 1);
505 bmap = set_name(bmap, type, i, v->v->name);
506 isl_token_free(tok);
507 } else if (tok->type == ISL_TOKEN_IDENT ||
508 tok->type == ISL_TOKEN_VALUE ||
509 tok->type == '-' ||
510 tok->type == '(') {
511 if (type == isl_dim_param) {
512 isl_stream_error(s, tok,
513 "expecting unique identifier");
514 goto error;
515 }
516 isl_stream_push_token(s, tok);
517 tok = NULL;
518 bmap = isl_basic_map_add(bmap, type, 1);
519 bmap = read_var_def(s, bmap, type, v);
520 } else
521 break;
522
523 tok = isl_stream_next_token(s);
524 if (!tok || tok->type != ',')
525 break;
526
527 isl_token_free(tok);
528 i++;
529 }
530 if (tok)
531 isl_stream_push_token(s, tok);
532
533 return bmap;
534 error:
535 isl_token_free(tok);
536 isl_basic_map_free(bmap);
537 return NULL;
538 }
539
540 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
541 struct vars *v)
542 {
543 struct isl_vec *vec;
544 struct isl_mat *mat;
545 struct isl_token *tok = NULL;
546
547 vec = accept_affine(s, v);
548 mat = isl_mat_from_row_vec(vec);
549 if (!mat)
550 return NULL;
551
552 for (;;) {
553 tok = isl_stream_next_token(s);
554 if (!tok) {
555 isl_stream_error(s, NULL, "unexpected EOF");
556 goto error;
557 }
558 if (tok->type != ',') {
559 isl_stream_push_token(s, tok);
560 break;
561 }
562 isl_token_free(tok);
563
564 vec = accept_affine(s, v);
565 mat = isl_mat_add_zero_cols(mat, 1 + v->n - isl_mat_cols(mat));
566 mat = isl_mat_vec_concat(mat, vec);
567 if (!mat)
568 return NULL;
569 }
570
571 return mat;
572 error:
573 isl_mat_free(mat);
574 return NULL;
575 }
576
577 static int read_div_definition(struct isl_stream *s, struct vars *v)
578 {
579 struct isl_token *tok;
580 int seen_paren = 0;
581 struct isl_vec *aff;
582 struct variable *var;
583
584 if (isl_stream_eat(s, '['))
585 return -1;
586
587 tok = isl_stream_next_token(s);
588 if (!tok)
589 return -1;
590 if (tok->type == '(') {
591 seen_paren = 1;
592 isl_token_free(tok);
593 } else
594 isl_stream_push_token(s, tok);
595
596 var = v->v;
597
598 aff = accept_affine(s, v);
599 if (!aff)
600 return -1;
601
602 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
603 if (!var->def) {
604 isl_vec_free(aff);
605 return -1;
606 }
607
608 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
609
610 isl_vec_free(aff);
611
612 if (seen_paren && isl_stream_eat(s, ')'))
613 return -1;
614 if (isl_stream_eat(s, '/'))
615 return -1;
616
617 tok = isl_stream_next_token(s);
618 if (!tok)
619 return -1;
620 if (tok->type != ISL_TOKEN_VALUE) {
621 isl_stream_error(s, tok, "expected denominator");
622 isl_stream_push_token(s, tok);
623 return -1;
624 }
625 isl_int_set(var->def->el[0], tok->u.v);
626 isl_token_free(tok);
627
628 if (isl_stream_eat(s, ']'))
629 return -1;
630
631 return 0;
632 }
633
634 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
635 struct vars *v, struct isl_basic_map *bmap, int k)
636 {
637 struct variable *var = v->v;
638
639 if (read_div_definition(s, v) < 0)
640 goto error;
641
642 isl_seq_cpy(bmap->div[k], var->def->el, 2 + v->n);
643
644 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
645 goto error;
646
647 return bmap;
648 error:
649 isl_basic_map_free(bmap);
650 return NULL;
651 }
652
653 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
654 struct vars *v, struct isl_basic_map *bmap)
655 {
656 struct isl_token *tok;
657
658 while ((tok = isl_stream_next_token(s)) != NULL) {
659 int k;
660 int p;
661 int n = v->n;
662 unsigned total = isl_basic_map_total_dim(bmap);
663
664 if (tok->type != ISL_TOKEN_IDENT)
665 break;
666
667 p = vars_pos(v, tok->u.s, -1);
668 if (p < 0)
669 goto error;
670 if (p < n) {
671 isl_stream_error(s, tok, "expecting unique identifier");
672 goto error;
673 }
674
675 bmap = isl_basic_map_cow(bmap);
676 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
677 1, 0, 2);
678
679 if ((k = isl_basic_map_alloc_div(bmap)) < 0)
680 goto error;
681 isl_seq_clr(bmap->div[k], 1 + 1 + total);
682
683 isl_token_free(tok);
684 tok = isl_stream_next_token(s);
685 if (tok && tok->type == '=') {
686 isl_token_free(tok);
687 bmap = add_div_definition(s, v, bmap, k);
688 tok = isl_stream_next_token(s);
689 }
690
691 if (!tok || tok->type != ',')
692 break;
693
694 isl_token_free(tok);
695 }
696 if (tok)
697 isl_stream_push_token(s, tok);
698
699 return bmap;
700 error:
701 isl_token_free(tok);
702 isl_basic_map_free(bmap);
703 return NULL;
704 }
705
706 static int next_is_tuple(struct isl_stream *s)
707 {
708 struct isl_token *tok;
709 int is_tuple;
710
711 tok = isl_stream_next_token(s);
712 if (!tok)
713 return 0;
714 if (tok->type == '[') {
715 isl_stream_push_token(s, tok);
716 return 1;
717 }
718 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
719 isl_stream_push_token(s, tok);
720 return 0;
721 }
722
723 is_tuple = isl_stream_next_token_is(s, '[');
724
725 isl_stream_push_token(s, tok);
726
727 return is_tuple;
728 }
729
730 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
731 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v);
732
733 static __isl_give isl_basic_map *read_nested_tuple(struct isl_stream *s,
734 __isl_take isl_basic_map *bmap, struct vars *v)
735 {
736 bmap = read_tuple(s, bmap, isl_dim_in, v);
737 if (isl_stream_eat(s, ISL_TOKEN_TO))
738 goto error;
739 bmap = read_tuple(s, bmap, isl_dim_out, v);
740 bmap = isl_basic_map_from_range(isl_basic_map_wrap(bmap));
741 return bmap;
742 error:
743 isl_basic_map_free(bmap);
744 return NULL;
745 }
746
747 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
748 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
749 {
750 struct isl_token *tok;
751 char *name = NULL;
752
753 tok = isl_stream_next_token(s);
754 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
755 name = strdup(tok->u.s);
756 if (!name)
757 goto error;
758 isl_token_free(tok);
759 tok = isl_stream_next_token(s);
760 }
761 if (!tok || tok->type != '[') {
762 isl_stream_error(s, tok, "expecting '['");
763 goto error;
764 }
765 isl_token_free(tok);
766 if (type != isl_dim_param && next_is_tuple(s)) {
767 isl_dim *dim = isl_basic_map_get_dim(bmap);
768 int nparam = isl_dim_size(dim, isl_dim_param);
769 int n_in = isl_dim_size(dim, isl_dim_in);
770 isl_basic_map *nested;
771 if (type == isl_dim_out)
772 dim = isl_dim_move(dim, isl_dim_param, nparam,
773 isl_dim_in, 0, n_in);
774 nested = isl_basic_map_alloc_dim(dim, 0, 0, 0);
775 nested = read_nested_tuple(s, nested, v);
776 if (type == isl_dim_in) {
777 nested = isl_basic_map_reverse(nested);
778 bmap = isl_basic_map_intersect(nested, bmap);
779 } else {
780 isl_basic_set *bset;
781 dim = isl_dim_range(isl_basic_map_get_dim(nested));
782 dim = isl_dim_drop(dim, isl_dim_param, nparam, n_in);
783 dim = isl_dim_join(isl_basic_map_get_dim(bmap), dim);
784 bset = isl_basic_map_domain(bmap);
785 nested = isl_basic_map_reset_dim(nested, dim);
786 bmap = isl_basic_map_intersect_domain(nested, bset);
787 }
788 } else
789 bmap = read_var_list(s, bmap, type, v);
790 tok = isl_stream_next_token(s);
791 if (!tok || tok->type != ']') {
792 isl_stream_error(s, tok, "expecting ']'");
793 goto error;
794 }
795 isl_token_free(tok);
796
797 if (name) {
798 bmap = isl_basic_map_set_tuple_name(bmap, type, name);
799 free(name);
800 }
801
802 return bmap;
803 error:
804 if (tok)
805 isl_token_free(tok);
806 isl_basic_map_free(bmap);
807 return NULL;
808 }
809
810 static struct isl_basic_map *add_constraints(struct isl_stream *s,
811 struct vars *v, struct isl_basic_map *bmap);
812
813 static struct isl_basic_map *add_exists(struct isl_stream *s,
814 struct vars *v, struct isl_basic_map *bmap)
815 {
816 struct isl_token *tok;
817 int n = v->n;
818 int extra;
819 int seen_paren = 0;
820 int i;
821 unsigned total;
822
823 tok = isl_stream_next_token(s);
824 if (!tok)
825 goto error;
826 if (tok->type == '(') {
827 seen_paren = 1;
828 isl_token_free(tok);
829 } else
830 isl_stream_push_token(s, tok);
831
832 bmap = read_defined_var_list(s, v, bmap);
833 if (!bmap)
834 goto error;
835
836 if (isl_stream_eat(s, ':'))
837 goto error;
838 bmap = add_constraints(s, v, bmap);
839 if (seen_paren && isl_stream_eat(s, ')'))
840 goto error;
841 return bmap;
842 error:
843 isl_basic_map_free(bmap);
844 return NULL;
845 }
846
847 static __isl_give isl_basic_map *construct_constraint(
848 __isl_take isl_basic_map *bmap, enum isl_token_type type,
849 isl_int *left, isl_int *right)
850 {
851 int k;
852 unsigned len;
853 struct isl_ctx *ctx;
854
855 if (!bmap)
856 return NULL;
857 len = 1 + isl_basic_map_total_dim(bmap);
858 ctx = bmap->ctx;
859
860 k = isl_basic_map_alloc_inequality(bmap);
861 if (k < 0)
862 goto error;
863 if (type == ISL_TOKEN_LE)
864 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
865 ctx->one, right,
866 len);
867 else if (type == ISL_TOKEN_GE)
868 isl_seq_combine(bmap->ineq[k], ctx->one, left,
869 ctx->negone, right,
870 len);
871 else if (type == ISL_TOKEN_LT) {
872 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
873 ctx->one, right,
874 len);
875 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
876 } else if (type == ISL_TOKEN_GT) {
877 isl_seq_combine(bmap->ineq[k], ctx->one, left,
878 ctx->negone, right,
879 len);
880 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
881 } else {
882 isl_seq_combine(bmap->ineq[k], ctx->one, left,
883 ctx->negone, right,
884 len);
885 isl_basic_map_inequality_to_equality(bmap, k);
886 }
887
888 return bmap;
889 error:
890 isl_basic_map_free(bmap);
891 return NULL;
892 }
893
894 static int is_comparator(struct isl_token *tok)
895 {
896 if (!tok)
897 return 0;
898
899 switch (tok->type) {
900 case ISL_TOKEN_LT:
901 case ISL_TOKEN_GT:
902 case ISL_TOKEN_LE:
903 case ISL_TOKEN_GE:
904 case '=':
905 return 1;
906 default:
907 return 0;
908 }
909 }
910
911 static struct isl_basic_map *add_constraint(struct isl_stream *s,
912 struct vars *v, struct isl_basic_map *bmap)
913 {
914 int i, j;
915 struct isl_token *tok = NULL;
916 struct isl_mat *aff1 = NULL, *aff2 = NULL;
917
918 tok = isl_stream_next_token(s);
919 if (!tok)
920 goto error;
921 if (tok->type == ISL_TOKEN_EXISTS) {
922 isl_token_free(tok);
923 return add_exists(s, v, bmap);
924 }
925 isl_stream_push_token(s, tok);
926 tok = NULL;
927
928 bmap = isl_basic_map_cow(bmap);
929
930 aff1 = accept_affine_list(s, v);
931 if (!aff1)
932 goto error;
933 tok = isl_stream_next_token(s);
934 if (!is_comparator(tok)) {
935 isl_stream_error(s, tok, "missing operator");
936 if (tok)
937 isl_stream_push_token(s, tok);
938 tok = NULL;
939 goto error;
940 }
941 for (;;) {
942 aff2 = accept_affine_list(s, v);
943 if (!aff2)
944 goto error;
945
946 aff1 = isl_mat_add_zero_cols(aff1, aff2->n_col - aff1->n_col);
947 if (!aff1)
948 goto error;
949 bmap = add_divs(bmap, v);
950 bmap = isl_basic_map_extend_constraints(bmap, 0,
951 aff1->n_row * aff2->n_row);
952 for (i = 0; i < aff1->n_row; ++i)
953 for (j = 0; j < aff2->n_row; ++j)
954 bmap = construct_constraint(bmap, tok->type,
955 aff1->row[i], aff2->row[j]);
956 isl_token_free(tok);
957 isl_mat_free(aff1);
958 aff1 = aff2;
959
960 tok = isl_stream_next_token(s);
961 if (!is_comparator(tok)) {
962 if (tok)
963 isl_stream_push_token(s, tok);
964 break;
965 }
966 }
967 isl_mat_free(aff1);
968
969 return bmap;
970 error:
971 if (tok)
972 isl_token_free(tok);
973 isl_mat_free(aff1);
974 isl_mat_free(aff2);
975 isl_basic_map_free(bmap);
976 return NULL;
977 }
978
979 static struct isl_basic_map *add_constraints(struct isl_stream *s,
980 struct vars *v, struct isl_basic_map *bmap)
981 {
982 struct isl_token *tok;
983
984 for (;;) {
985 bmap = add_constraint(s, v, bmap);
986 if (!bmap)
987 return NULL;
988 tok = isl_stream_next_token(s);
989 if (!tok) {
990 isl_stream_error(s, NULL, "unexpected EOF");
991 goto error;
992 }
993 if (tok->type != ISL_TOKEN_AND)
994 break;
995 isl_token_free(tok);
996 }
997 isl_stream_push_token(s, tok);
998
999 return bmap;
1000 error:
1001 if (tok)
1002 isl_token_free(tok);
1003 isl_basic_map_free(bmap);
1004 return NULL;
1005 }
1006
1007 static struct isl_basic_map *read_disjunct(struct isl_stream *s,
1008 struct vars *v, __isl_take isl_dim *dim)
1009 {
1010 int seen_paren = 0;
1011 struct isl_token *tok;
1012 struct isl_basic_map *bmap;
1013
1014 bmap = isl_basic_map_alloc_dim(dim, 0, 0, 0);
1015 if (!bmap)
1016 return NULL;
1017
1018 tok = isl_stream_next_token(s);
1019 if (!tok)
1020 goto error;
1021 if (tok->type == '(') {
1022 seen_paren = 1;
1023 isl_token_free(tok);
1024 } else
1025 isl_stream_push_token(s, tok);
1026
1027 bmap = add_constraints(s, v, bmap);
1028 bmap = isl_basic_map_simplify(bmap);
1029 bmap = isl_basic_map_finalize(bmap);
1030
1031 if (seen_paren && isl_stream_eat(s, ')'))
1032 goto error;
1033
1034 return bmap;
1035 error:
1036 isl_basic_map_free(bmap);
1037 return NULL;
1038 }
1039
1040 static struct isl_map *read_disjuncts(struct isl_stream *s,
1041 struct vars *v, __isl_take isl_dim *dim)
1042 {
1043 struct isl_token *tok;
1044 struct isl_map *map;
1045
1046 tok = isl_stream_next_token(s);
1047 if (!tok) {
1048 isl_stream_error(s, NULL, "unexpected EOF");
1049 goto error;
1050 }
1051 if (tok->type == '}') {
1052 isl_stream_push_token(s, tok);
1053 return isl_map_universe(dim);
1054 }
1055 isl_stream_push_token(s, tok);
1056
1057 map = isl_map_empty(isl_dim_copy(dim));
1058 for (;;) {
1059 struct isl_basic_map *bmap;
1060 int n = v->n;
1061
1062 bmap = read_disjunct(s, v, isl_dim_copy(dim));
1063 map = isl_map_union(map, isl_map_from_basic_map(bmap));
1064
1065 vars_drop(v, v->n - n);
1066
1067 tok = isl_stream_next_token(s);
1068 if (!tok || tok->type != ISL_TOKEN_OR)
1069 break;
1070 isl_token_free(tok);
1071 }
1072 if (tok)
1073 isl_stream_push_token(s, tok);
1074
1075 isl_dim_free(dim);
1076 return map;
1077 error:
1078 isl_dim_free(dim);
1079 return NULL;
1080 }
1081
1082 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1083 {
1084 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1085 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1086 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1087 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1088
1089 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1090 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1091 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1092
1093 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1094 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1095 isl_basic_map_dim(bmap, isl_dim_in) +
1096 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1097 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1098
1099 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1100 return 1 + pos;
1101
1102 return 0;
1103 }
1104
1105 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1106 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1107 {
1108 int j;
1109 struct isl_token *tok;
1110 int type;
1111 int k;
1112 isl_int *c;
1113 unsigned nparam;
1114 unsigned dim;
1115
1116 if (!bmap)
1117 return NULL;
1118
1119 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1120 dim = isl_basic_map_dim(bmap, isl_dim_out);
1121
1122 tok = isl_stream_next_token(s);
1123 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1124 isl_stream_error(s, tok, "expecting coefficient");
1125 if (tok)
1126 isl_stream_push_token(s, tok);
1127 goto error;
1128 }
1129 if (!tok->on_new_line) {
1130 isl_stream_error(s, tok, "coefficient should appear on new line");
1131 isl_stream_push_token(s, tok);
1132 goto error;
1133 }
1134
1135 type = isl_int_get_si(tok->u.v);
1136 isl_token_free(tok);
1137
1138 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1139 if (type == 0) {
1140 k = isl_basic_map_alloc_equality(bmap);
1141 c = bmap->eq[k];
1142 } else {
1143 k = isl_basic_map_alloc_inequality(bmap);
1144 c = bmap->ineq[k];
1145 }
1146 if (k < 0)
1147 goto error;
1148
1149 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1150 int pos;
1151 tok = isl_stream_next_token(s);
1152 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1153 isl_stream_error(s, tok, "expecting coefficient");
1154 if (tok)
1155 isl_stream_push_token(s, tok);
1156 goto error;
1157 }
1158 if (tok->on_new_line) {
1159 isl_stream_error(s, tok,
1160 "coefficient should not appear on new line");
1161 isl_stream_push_token(s, tok);
1162 goto error;
1163 }
1164 pos = polylib_pos_to_isl_pos(bmap, j);
1165 isl_int_set(c[pos], tok->u.v);
1166 isl_token_free(tok);
1167 }
1168
1169 return bmap;
1170 error:
1171 isl_basic_map_free(bmap);
1172 return NULL;
1173 }
1174
1175 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1176 int nparam)
1177 {
1178 int i;
1179 struct isl_token *tok;
1180 struct isl_token *tok2;
1181 int n_row, n_col;
1182 int on_new_line;
1183 unsigned in = 0, out, local = 0;
1184 struct isl_basic_map *bmap = NULL;
1185
1186 if (nparam < 0)
1187 nparam = 0;
1188
1189 tok = isl_stream_next_token(s);
1190 if (!tok) {
1191 isl_stream_error(s, NULL, "unexpected EOF");
1192 return NULL;
1193 }
1194 tok2 = isl_stream_next_token(s);
1195 if (!tok2) {
1196 isl_token_free(tok);
1197 isl_stream_error(s, NULL, "unexpected EOF");
1198 return NULL;
1199 }
1200 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1201 isl_stream_push_token(s, tok2);
1202 isl_stream_push_token(s, tok);
1203 isl_stream_error(s, NULL,
1204 "expecting constraint matrix dimensions");
1205 return NULL;
1206 }
1207 n_row = isl_int_get_si(tok->u.v);
1208 n_col = isl_int_get_si(tok2->u.v);
1209 on_new_line = tok2->on_new_line;
1210 isl_token_free(tok2);
1211 isl_token_free(tok);
1212 isl_assert(s->ctx, !on_new_line, return NULL);
1213 isl_assert(s->ctx, n_row >= 0, return NULL);
1214 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1215 tok = isl_stream_next_token_on_same_line(s);
1216 if (tok) {
1217 if (tok->type != ISL_TOKEN_VALUE) {
1218 isl_stream_error(s, tok,
1219 "expecting number of output dimensions");
1220 isl_stream_push_token(s, tok);
1221 goto error;
1222 }
1223 out = isl_int_get_si(tok->u.v);
1224 isl_token_free(tok);
1225
1226 tok = isl_stream_next_token_on_same_line(s);
1227 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1228 isl_stream_error(s, tok,
1229 "expecting number of input dimensions");
1230 if (tok)
1231 isl_stream_push_token(s, tok);
1232 goto error;
1233 }
1234 in = isl_int_get_si(tok->u.v);
1235 isl_token_free(tok);
1236
1237 tok = isl_stream_next_token_on_same_line(s);
1238 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1239 isl_stream_error(s, tok,
1240 "expecting number of existentials");
1241 if (tok)
1242 isl_stream_push_token(s, tok);
1243 goto error;
1244 }
1245 local = isl_int_get_si(tok->u.v);
1246 isl_token_free(tok);
1247
1248 tok = isl_stream_next_token_on_same_line(s);
1249 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1250 isl_stream_error(s, tok,
1251 "expecting number of parameters");
1252 if (tok)
1253 isl_stream_push_token(s, tok);
1254 goto error;
1255 }
1256 nparam = isl_int_get_si(tok->u.v);
1257 isl_token_free(tok);
1258 if (n_col != 1 + out + in + local + nparam + 1) {
1259 isl_stream_error(s, NULL,
1260 "dimensions don't match");
1261 goto error;
1262 }
1263 } else
1264 out = n_col - 2 - nparam;
1265 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1266 if (!bmap)
1267 return NULL;
1268
1269 for (i = 0; i < local; ++i) {
1270 int k = isl_basic_map_alloc_div(bmap);
1271 if (k < 0)
1272 goto error;
1273 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1274 }
1275
1276 for (i = 0; i < n_row; ++i)
1277 bmap = basic_map_read_polylib_constraint(s, bmap);
1278
1279 tok = isl_stream_next_token_on_same_line(s);
1280 if (tok) {
1281 isl_stream_error(s, tok, "unexpected extra token on line");
1282 isl_stream_push_token(s, tok);
1283 goto error;
1284 }
1285
1286 bmap = isl_basic_map_simplify(bmap);
1287 bmap = isl_basic_map_finalize(bmap);
1288 return bmap;
1289 error:
1290 isl_basic_map_free(bmap);
1291 return NULL;
1292 }
1293
1294 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1295 {
1296 struct isl_token *tok;
1297 struct isl_token *tok2;
1298 int i, n;
1299 struct isl_map *map;
1300
1301 tok = isl_stream_next_token(s);
1302 if (!tok) {
1303 isl_stream_error(s, NULL, "unexpected EOF");
1304 return NULL;
1305 }
1306 tok2 = isl_stream_next_token_on_same_line(s);
1307 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1308 isl_stream_push_token(s, tok2);
1309 isl_stream_push_token(s, tok);
1310 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1311 }
1312 if (tok2) {
1313 isl_stream_error(s, tok2, "unexpected token");
1314 isl_stream_push_token(s, tok2);
1315 isl_stream_push_token(s, tok);
1316 return NULL;
1317 }
1318 n = isl_int_get_si(tok->u.v);
1319 isl_token_free(tok);
1320
1321 isl_assert(s->ctx, n >= 1, return NULL);
1322
1323 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1324
1325 for (i = 1; map && i < n; ++i)
1326 map = isl_map_union(map,
1327 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1328
1329 return map;
1330 }
1331
1332 static int optional_power(struct isl_stream *s)
1333 {
1334 int pow;
1335 struct isl_token *tok;
1336
1337 tok = isl_stream_next_token(s);
1338 if (!tok)
1339 return 1;
1340 if (tok->type != '^') {
1341 isl_stream_push_token(s, tok);
1342 return 1;
1343 }
1344 isl_token_free(tok);
1345 tok = isl_stream_next_token(s);
1346 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1347 isl_stream_error(s, tok, "expecting exponent");
1348 if (tok)
1349 isl_stream_push_token(s, tok);
1350 return 1;
1351 }
1352 pow = isl_int_get_si(tok->u.v);
1353 isl_token_free(tok);
1354 return pow;
1355 }
1356
1357 static __isl_give isl_div *read_div(struct isl_stream *s,
1358 __isl_take isl_dim *dim, struct vars *v)
1359 {
1360 int n;
1361 isl_basic_map *bmap;
1362
1363 n = v->n;
1364 bmap = isl_basic_map_universe(dim);
1365
1366 if (vars_add_anon(v) < 0)
1367 goto error;
1368 if (read_div_definition(s, v) < 0)
1369 goto error;
1370 bmap = add_divs(bmap, v);
1371 bmap = isl_basic_map_order_divs(bmap);
1372 if (!bmap)
1373 goto error;
1374 vars_drop(v, v->n - n);
1375
1376 return isl_basic_map_div(bmap, bmap->n_div - 1);
1377 error:
1378 isl_basic_map_free(bmap);
1379 return NULL;
1380 }
1381
1382 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1383 __isl_keep isl_basic_map *bmap, struct vars *v);
1384
1385 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1386 __isl_keep isl_basic_map *bmap, struct vars *v)
1387 {
1388 struct isl_qpolynomial *qp;
1389 struct isl_token *tok;
1390
1391 tok = isl_stream_next_token(s);
1392 if (!tok) {
1393 isl_stream_error(s, NULL, "unexpected EOF");
1394 return NULL;
1395 }
1396 if (tok->type == '(') {
1397 int pow;
1398
1399 isl_token_free(tok);
1400 qp = read_term(s, bmap, v);
1401 if (!qp)
1402 return NULL;
1403 if (isl_stream_eat(s, ')'))
1404 goto error;
1405 pow = optional_power(s);
1406 qp = isl_qpolynomial_pow(qp, pow);
1407 } else if (tok->type == ISL_TOKEN_VALUE) {
1408 struct isl_token *tok2;
1409 tok2 = isl_stream_next_token(s);
1410 if (tok2 && tok2->type == '/') {
1411 isl_token_free(tok2);
1412 tok2 = isl_stream_next_token(s);
1413 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1414 isl_stream_error(s, tok2, "expected denominator");
1415 isl_token_free(tok);
1416 isl_token_free(tok2);
1417 return NULL;
1418 }
1419 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1420 tok->u.v, tok2->u.v);
1421 isl_token_free(tok2);
1422 } else {
1423 isl_stream_push_token(s, tok2);
1424 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1425 tok->u.v);
1426 }
1427 isl_token_free(tok);
1428 } else if (tok->type == ISL_TOKEN_INFTY) {
1429 isl_token_free(tok);
1430 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1431 } else if (tok->type == ISL_TOKEN_NAN) {
1432 isl_token_free(tok);
1433 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1434 } else if (tok->type == ISL_TOKEN_IDENT) {
1435 int n = v->n;
1436 int pos = vars_pos(v, tok->u.s, -1);
1437 int pow;
1438 if (pos < 0) {
1439 isl_token_free(tok);
1440 return NULL;
1441 }
1442 if (pos >= n) {
1443 vars_drop(v, v->n - n);
1444 isl_stream_error(s, tok, "unknown identifier");
1445 isl_token_free(tok);
1446 return NULL;
1447 }
1448 isl_token_free(tok);
1449 pow = optional_power(s);
1450 qp = isl_qpolynomial_var_pow(isl_basic_map_get_dim(bmap), pos, pow);
1451 } else if (tok->type == '[') {
1452 isl_div *div;
1453 int pow;
1454
1455 isl_stream_push_token(s, tok);
1456 div = read_div(s, isl_basic_map_get_dim(bmap), v);
1457 pow = optional_power(s);
1458 qp = isl_qpolynomial_div_pow(div, pow);
1459 } else if (tok->type == '-') {
1460 struct isl_qpolynomial *qp2;
1461
1462 isl_token_free(tok);
1463 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1464 s->ctx->negone);
1465 qp2 = read_factor(s, bmap, v);
1466 qp = isl_qpolynomial_mul(qp, qp2);
1467 } else {
1468 isl_stream_error(s, tok, "unexpected isl_token");
1469 isl_stream_push_token(s, tok);
1470 return NULL;
1471 }
1472
1473 if (isl_stream_eat_if_available(s, '*') ||
1474 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1475 struct isl_qpolynomial *qp2;
1476
1477 qp2 = read_factor(s, bmap, v);
1478 qp = isl_qpolynomial_mul(qp, qp2);
1479 }
1480
1481 return qp;
1482 error:
1483 isl_qpolynomial_free(qp);
1484 return NULL;
1485 }
1486
1487 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1488 __isl_keep isl_basic_map *bmap, struct vars *v)
1489 {
1490 struct isl_token *tok;
1491 struct isl_qpolynomial *qp;
1492
1493 qp = read_factor(s, bmap, v);
1494
1495 for (;;) {
1496 tok = isl_stream_next_token(s);
1497 if (!tok)
1498 return qp;
1499
1500 if (tok->type == '+') {
1501 struct isl_qpolynomial *qp2;
1502
1503 isl_token_free(tok);
1504 qp2 = read_factor(s, bmap, v);
1505 qp = isl_qpolynomial_add(qp, qp2);
1506 } else if (tok->type == '-') {
1507 struct isl_qpolynomial *qp2;
1508
1509 isl_token_free(tok);
1510 qp2 = read_factor(s, bmap, v);
1511 qp = isl_qpolynomial_sub(qp, qp2);
1512 } else if (tok->type == ISL_TOKEN_VALUE &&
1513 isl_int_is_neg(tok->u.v)) {
1514 struct isl_qpolynomial *qp2;
1515
1516 isl_stream_push_token(s, tok);
1517 qp2 = read_factor(s, bmap, v);
1518 qp = isl_qpolynomial_add(qp, qp2);
1519 } else {
1520 isl_stream_push_token(s, tok);
1521 break;
1522 }
1523 }
1524
1525 return qp;
1526 }
1527
1528 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1529 __isl_take isl_basic_map *bmap, struct vars *v)
1530 {
1531 struct isl_token *tok;
1532 struct isl_map *map;
1533
1534 tok = isl_stream_next_token(s);
1535 if (!tok) {
1536 isl_stream_error(s, NULL, "unexpected EOF");
1537 goto error;
1538 }
1539 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1540 if (tok->type == ':') {
1541 isl_token_free(tok);
1542 map = isl_map_intersect(map,
1543 read_disjuncts(s, v, isl_basic_map_get_dim(bmap)));
1544 } else
1545 isl_stream_push_token(s, tok);
1546
1547 isl_basic_map_free(bmap);
1548
1549 return map;
1550 error:
1551 isl_basic_map_free(bmap);
1552 return NULL;
1553 }
1554
1555 static struct isl_obj obj_read_poly(struct isl_stream *s,
1556 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1557 {
1558 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1559 struct isl_pw_qpolynomial *pwqp;
1560 struct isl_qpolynomial *qp;
1561 struct isl_map *map;
1562 struct isl_set *set;
1563
1564 qp = read_term(s, bmap, v);
1565 map = read_optional_disjuncts(s, bmap, v);
1566 set = isl_map_range(map);
1567
1568 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1569
1570 vars_drop(v, v->n - n);
1571
1572 obj.v = pwqp;
1573 return obj;
1574 }
1575
1576 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1577 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1578 {
1579 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1580 struct isl_obj obj_p;
1581 isl_qpolynomial *qp;
1582 isl_qpolynomial_fold *fold = NULL;
1583 isl_pw_qpolynomial_fold *pwf;
1584 isl_map *map;
1585 isl_set *set;
1586
1587 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1588 return obj_read_poly(s, bmap, v, n);
1589
1590 if (isl_stream_eat(s, '('))
1591 goto error;
1592
1593 qp = read_term(s, bmap, v);
1594 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1595
1596 while (isl_stream_eat_if_available(s, ',')) {
1597 isl_qpolynomial_fold *fold_i;
1598 qp = read_term(s, bmap, v);
1599 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1600 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1601 }
1602
1603 if (isl_stream_eat(s, ')'))
1604 goto error;
1605
1606 map = read_optional_disjuncts(s, bmap, v);
1607 set = isl_map_range(map);
1608 pwf = isl_pw_qpolynomial_fold_alloc(isl_fold_max, set, fold);
1609
1610 vars_drop(v, v->n - n);
1611
1612 obj.v = pwf;
1613 return obj;
1614 error:
1615 isl_basic_map_free(bmap);
1616 isl_qpolynomial_fold_free(fold);
1617 obj.type = isl_obj_none;
1618 return obj;
1619 }
1620
1621 static struct isl_obj obj_read_body(struct isl_stream *s,
1622 __isl_take isl_basic_map *bmap, struct vars *v)
1623 {
1624 struct isl_map *map = NULL;
1625 struct isl_token *tok;
1626 struct isl_obj obj = { isl_obj_set, NULL };
1627 int n = v->n;
1628
1629 if (!next_is_tuple(s))
1630 return obj_read_poly_or_fold(s, bmap, v, n);
1631
1632 bmap = read_tuple(s, bmap, isl_dim_in, v);
1633 if (!bmap)
1634 goto error;
1635 tok = isl_stream_next_token(s);
1636 if (tok && tok->type == ISL_TOKEN_TO) {
1637 obj.type = isl_obj_map;
1638 isl_token_free(tok);
1639 if (!next_is_tuple(s)) {
1640 bmap = isl_basic_map_reverse(bmap);
1641 return obj_read_poly_or_fold(s, bmap, v, n);
1642 }
1643 bmap = read_tuple(s, bmap, isl_dim_out, v);
1644 if (!bmap)
1645 goto error;
1646 } else {
1647 bmap = isl_basic_map_reverse(bmap);
1648 if (tok)
1649 isl_stream_push_token(s, tok);
1650 }
1651
1652 map = read_optional_disjuncts(s, bmap, v);
1653
1654 vars_drop(v, v->n - n);
1655
1656 obj.v = map;
1657 return obj;
1658 error:
1659 isl_basic_map_free(bmap);
1660 obj.type = isl_obj_none;
1661 return obj;
1662 }
1663
1664 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1665 {
1666 if (obj.type == isl_obj_map) {
1667 obj.v = isl_union_map_from_map(obj.v);
1668 obj.type = isl_obj_union_map;
1669 } else if (obj.type == isl_obj_set) {
1670 obj.v = isl_union_set_from_set(obj.v);
1671 obj.type = isl_obj_union_set;
1672 } else if (obj.type == isl_obj_pw_qpolynomial) {
1673 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1674 obj.type = isl_obj_union_pw_qpolynomial;
1675 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1676 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1677 obj.type = isl_obj_union_pw_qpolynomial_fold;
1678 } else
1679 isl_assert(ctx, 0, goto error);
1680 return obj;
1681 error:
1682 obj.type->free(obj.v);
1683 obj.type = isl_obj_none;
1684 return obj;
1685 }
1686
1687 static struct isl_obj obj_add(struct isl_ctx *ctx,
1688 struct isl_obj obj1, struct isl_obj obj2)
1689 {
1690 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1691 obj1 = to_union(ctx, obj1);
1692 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1693 obj2 = to_union(ctx, obj2);
1694 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1695 obj1 = to_union(ctx, obj1);
1696 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1697 obj2 = to_union(ctx, obj2);
1698 if (obj1.type == isl_obj_pw_qpolynomial &&
1699 obj2.type == isl_obj_union_pw_qpolynomial)
1700 obj1 = to_union(ctx, obj1);
1701 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1702 obj2.type == isl_obj_pw_qpolynomial)
1703 obj2 = to_union(ctx, obj2);
1704 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1705 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1706 obj1 = to_union(ctx, obj1);
1707 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1708 obj2.type == isl_obj_pw_qpolynomial_fold)
1709 obj2 = to_union(ctx, obj2);
1710 isl_assert(ctx, obj1.type == obj2.type, goto error);
1711 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
1712 obj1 = to_union(ctx, obj1);
1713 obj2 = to_union(ctx, obj2);
1714 }
1715 if (obj1.type == isl_obj_set && !isl_set_has_equal_dim(obj1.v, obj2.v)) {
1716 obj1 = to_union(ctx, obj1);
1717 obj2 = to_union(ctx, obj2);
1718 }
1719 if (obj1.type == isl_obj_pw_qpolynomial &&
1720 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
1721 obj1 = to_union(ctx, obj1);
1722 obj2 = to_union(ctx, obj2);
1723 }
1724 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1725 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
1726 obj1 = to_union(ctx, obj1);
1727 obj2 = to_union(ctx, obj2);
1728 }
1729 obj1.v = obj1.type->add(obj1.v, obj2.v);
1730 return obj1;
1731 error:
1732 obj1.type->free(obj1.v);
1733 obj2.type->free(obj2.v);
1734 obj1.type = isl_obj_none;
1735 obj1.v = NULL;
1736 return obj1;
1737 }
1738
1739 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
1740 {
1741 isl_basic_map *bmap = NULL;
1742 struct isl_token *tok;
1743 struct vars *v = NULL;
1744 struct isl_obj obj = { isl_obj_set, NULL };
1745
1746 tok = isl_stream_next_token(s);
1747 if (!tok) {
1748 isl_stream_error(s, NULL, "unexpected EOF");
1749 goto error;
1750 }
1751 if (tok->type == ISL_TOKEN_VALUE) {
1752 struct isl_map *map;
1753 isl_stream_push_token(s, tok);
1754 map = map_read_polylib(s, nparam);
1755 if (!map)
1756 goto error;
1757 if (isl_map_dim(map, isl_dim_in) > 0)
1758 obj.type = isl_obj_map;
1759 obj.v = map;
1760 return obj;
1761 }
1762 v = vars_new(s->ctx);
1763 if (!v) {
1764 isl_stream_push_token(s, tok);
1765 goto error;
1766 }
1767 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
1768 if (tok->type == '[') {
1769 isl_stream_push_token(s, tok);
1770 bmap = read_tuple(s, bmap, isl_dim_param, v);
1771 if (!bmap)
1772 goto error;
1773 if (nparam >= 0)
1774 isl_assert(s->ctx, nparam == v->n, goto error);
1775 tok = isl_stream_next_token(s);
1776 if (!tok || tok->type != ISL_TOKEN_TO) {
1777 isl_stream_error(s, tok, "expecting '->'");
1778 if (tok)
1779 isl_stream_push_token(s, tok);
1780 goto error;
1781 }
1782 isl_token_free(tok);
1783 tok = isl_stream_next_token(s);
1784 } else if (nparam > 0)
1785 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
1786 if (!tok || tok->type != '{') {
1787 isl_stream_error(s, tok, "expecting '{'");
1788 if (tok)
1789 isl_stream_push_token(s, tok);
1790 goto error;
1791 }
1792 isl_token_free(tok);
1793
1794 tok = isl_stream_next_token(s);
1795 if (!tok)
1796 ;
1797 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1798 isl_token_free(tok);
1799 if (isl_stream_eat(s, '='))
1800 goto error;
1801 bmap = read_tuple(s, bmap, isl_dim_param, v);
1802 if (!bmap)
1803 goto error;
1804 if (nparam >= 0)
1805 isl_assert(s->ctx, nparam == v->n, goto error);
1806 } else if (tok->type == '}') {
1807 obj.type = isl_obj_union_set;
1808 obj.v = isl_union_set_empty(isl_basic_map_get_dim(bmap));
1809 isl_token_free(tok);
1810 goto done;
1811 } else
1812 isl_stream_push_token(s, tok);
1813
1814 for (;;) {
1815 struct isl_obj o;
1816 tok = NULL;
1817 o = obj_read_body(s, isl_basic_map_copy(bmap), v);
1818 if (o.type == isl_obj_none || !o.v)
1819 goto error;
1820 if (!obj.v)
1821 obj = o;
1822 else {
1823 obj = obj_add(s->ctx, obj, o);
1824 if (obj.type == isl_obj_none || !obj.v)
1825 goto error;
1826 }
1827 tok = isl_stream_next_token(s);
1828 if (!tok || tok->type != ';')
1829 break;
1830 isl_token_free(tok);
1831 }
1832
1833 if (tok && tok->type == '}') {
1834 isl_token_free(tok);
1835 } else {
1836 isl_stream_error(s, tok, "unexpected isl_token");
1837 if (tok)
1838 isl_token_free(tok);
1839 goto error;
1840 }
1841 done:
1842 vars_free(v);
1843 isl_basic_map_free(bmap);
1844
1845 return obj;
1846 error:
1847 isl_basic_map_free(bmap);
1848 obj.type->free(obj.v);
1849 if (v)
1850 vars_free(v);
1851 obj.v = NULL;
1852 return obj;
1853 }
1854
1855 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1856 {
1857 return obj_read(s, -1);
1858 }
1859
1860 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
1861 {
1862 struct isl_obj obj;
1863 struct isl_map *map;
1864
1865 obj = obj_read(s, nparam);
1866 if (obj.v)
1867 isl_assert(s->ctx, obj.type == isl_obj_map ||
1868 obj.type == isl_obj_set, goto error);
1869
1870 return obj.v;
1871 error:
1872 obj.type->free(obj.v);
1873 return NULL;
1874 }
1875
1876 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
1877 {
1878 struct isl_obj obj;
1879 struct isl_set *set;
1880
1881 obj = obj_read(s, nparam);
1882 if (obj.v)
1883 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
1884
1885 return obj.v;
1886 error:
1887 obj.type->free(obj.v);
1888 return NULL;
1889 }
1890
1891 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
1892 {
1893 struct isl_obj obj;
1894 isl_union_map *umap;
1895
1896 obj = obj_read(s, -1);
1897 if (obj.type == isl_obj_map) {
1898 obj.type = isl_obj_union_map;
1899 obj.v = isl_union_map_from_map(obj.v);
1900 }
1901 if (obj.type == isl_obj_set) {
1902 obj.type = isl_obj_union_set;
1903 obj.v = isl_union_set_from_set(obj.v);
1904 }
1905 if (obj.v)
1906 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
1907 obj.type == isl_obj_union_set, goto error);
1908
1909 return obj.v;
1910 error:
1911 obj.type->free(obj.v);
1912 return NULL;
1913 }
1914
1915 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
1916 {
1917 struct isl_obj obj;
1918 isl_union_set *uset;
1919
1920 obj = obj_read(s, -1);
1921 if (obj.type == isl_obj_set) {
1922 obj.type = isl_obj_union_set;
1923 obj.v = isl_union_set_from_set(obj.v);
1924 }
1925 if (obj.v)
1926 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
1927
1928 return obj.v;
1929 error:
1930 obj.type->free(obj.v);
1931 return NULL;
1932 }
1933
1934 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
1935 {
1936 struct isl_obj obj;
1937 struct isl_map *map;
1938 struct isl_basic_map *bmap;
1939
1940 obj = obj_read(s, nparam);
1941 map = obj.v;
1942 if (!map)
1943 return NULL;
1944
1945 isl_assert(map->ctx, map->n <= 1, goto error);
1946
1947 if (map->n == 0)
1948 bmap = isl_basic_map_empty_like_map(map);
1949 else
1950 bmap = isl_basic_map_copy(map->p[0]);
1951
1952 isl_map_free(map);
1953
1954 return bmap;
1955 error:
1956 isl_map_free(map);
1957 return NULL;
1958 }
1959
1960 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
1961 FILE *input, int nparam)
1962 {
1963 struct isl_basic_map *bmap;
1964 struct isl_stream *s = isl_stream_new_file(ctx, input);
1965 if (!s)
1966 return NULL;
1967 bmap = basic_map_read(s, nparam);
1968 isl_stream_free(s);
1969 return bmap;
1970 }
1971
1972 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
1973 FILE *input, int nparam)
1974 {
1975 struct isl_basic_map *bmap;
1976 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
1977 if (!bmap)
1978 return NULL;
1979 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
1980 return (struct isl_basic_set *)bmap;
1981 error:
1982 isl_basic_map_free(bmap);
1983 return NULL;
1984 }
1985
1986 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
1987 const char *str, int nparam)
1988 {
1989 struct isl_basic_map *bmap;
1990 struct isl_stream *s = isl_stream_new_str(ctx, str);
1991 if (!s)
1992 return NULL;
1993 bmap = basic_map_read(s, nparam);
1994 isl_stream_free(s);
1995 return bmap;
1996 }
1997
1998 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
1999 const char *str, int nparam)
2000 {
2001 struct isl_basic_map *bmap;
2002 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
2003 if (!bmap)
2004 return NULL;
2005 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2006 return (struct isl_basic_set *)bmap;
2007 error:
2008 isl_basic_map_free(bmap);
2009 return NULL;
2010 }
2011
2012 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2013 FILE *input, int nparam)
2014 {
2015 struct isl_map *map;
2016 struct isl_stream *s = isl_stream_new_file(ctx, input);
2017 if (!s)
2018 return NULL;
2019 map = isl_stream_read_map(s, nparam);
2020 isl_stream_free(s);
2021 return map;
2022 }
2023
2024 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2025 const char *str, int nparam)
2026 {
2027 struct isl_map *map;
2028 struct isl_stream *s = isl_stream_new_str(ctx, str);
2029 if (!s)
2030 return NULL;
2031 map = isl_stream_read_map(s, nparam);
2032 isl_stream_free(s);
2033 return map;
2034 }
2035
2036 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2037 FILE *input, int nparam)
2038 {
2039 struct isl_map *map;
2040 map = isl_map_read_from_file(ctx, input, nparam);
2041 if (!map)
2042 return NULL;
2043 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2044 return (struct isl_set *)map;
2045 error:
2046 isl_map_free(map);
2047 return NULL;
2048 }
2049
2050 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2051 const char *str, int nparam)
2052 {
2053 struct isl_map *map;
2054 map = isl_map_read_from_str(ctx, str, nparam);
2055 if (!map)
2056 return NULL;
2057 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2058 return (struct isl_set *)map;
2059 error:
2060 isl_map_free(map);
2061 return NULL;
2062 }
2063
2064 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2065 const char *str)
2066 {
2067 isl_union_map *umap;
2068 struct isl_stream *s = isl_stream_new_str(ctx, str);
2069 if (!s)
2070 return NULL;
2071 umap = isl_stream_read_union_map(s);
2072 isl_stream_free(s);
2073 return umap;
2074 }
2075
2076 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2077 const char *str)
2078 {
2079 isl_union_set *uset;
2080 struct isl_stream *s = isl_stream_new_str(ctx, str);
2081 if (!s)
2082 return NULL;
2083 uset = isl_stream_read_union_set(s);
2084 isl_stream_free(s);
2085 return uset;
2086 }
2087
2088 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2089 {
2090 struct isl_vec *vec = NULL;
2091 struct isl_token *tok;
2092 unsigned size;
2093 int j;
2094
2095 tok = isl_stream_next_token(s);
2096 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2097 isl_stream_error(s, tok, "expecting vector length");
2098 goto error;
2099 }
2100
2101 size = isl_int_get_si(tok->u.v);
2102 isl_token_free(tok);
2103
2104 vec = isl_vec_alloc(s->ctx, size);
2105
2106 for (j = 0; j < size; ++j) {
2107 tok = isl_stream_next_token(s);
2108 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2109 isl_stream_error(s, tok, "expecting constant value");
2110 goto error;
2111 }
2112 isl_int_set(vec->el[j], tok->u.v);
2113 isl_token_free(tok);
2114 }
2115
2116 return vec;
2117 error:
2118 isl_token_free(tok);
2119 isl_vec_free(vec);
2120 return NULL;
2121 }
2122
2123 static __isl_give isl_vec *vec_read(struct isl_stream *s,
2124 unsigned input_format)
2125 {
2126 if (input_format == ISL_FORMAT_POLYLIB)
2127 return isl_vec_read_polylib(s);
2128 isl_assert(s->ctx, 0, return NULL);
2129 }
2130
2131 struct isl_vec *isl_vec_read_from_file(struct isl_ctx *ctx,
2132 FILE *input, unsigned input_format)
2133 {
2134 isl_vec *v;
2135 struct isl_stream *s = isl_stream_new_file(ctx, input);
2136 if (!s)
2137 return NULL;
2138 v = vec_read(s, input_format);
2139 isl_stream_free(s);
2140 return v;
2141 }
2142
2143 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2144 struct isl_stream *s)
2145 {
2146 struct isl_obj obj;
2147 struct isl_pw_qpolynomial *pwqp;
2148
2149 obj = obj_read(s, -1);
2150 if (obj.v)
2151 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2152 goto error);
2153
2154 return obj.v;
2155 error:
2156 obj.type->free(obj.v);
2157 return NULL;
2158 }
2159
2160 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2161 const char *str)
2162 {
2163 isl_pw_qpolynomial *pwqp;
2164 struct isl_stream *s = isl_stream_new_str(ctx, str);
2165 if (!s)
2166 return NULL;
2167 pwqp = isl_stream_read_pw_qpolynomial(s);
2168 isl_stream_free(s);
2169 return pwqp;
2170 }
Integer set library