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isl_basic_map_curry: add missing isl_basic_map_cow
[isl.git] / isl_input.c
bloba19fe6ed06056f71608f9f7c4b0b73227235ed02
1 /*
2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
4 * Copyright 2012 Ecole Normale Superieure
5 *
6 * Use of this software is governed by the MIT license
7 *
8 * Written by Sven Verdoolaege, K.U.Leuven, Departement
9 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
10 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
11 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
12 * and Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
13 */
14
15 #include <ctype.h>
16 #include <stdio.h>
17 #include <string.h>
18 #include <isl_ctx_private.h>
19 #include <isl_map_private.h>
20 #include <isl/set.h>
21 #include <isl/seq.h>
22 #include <isl_stream_private.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 #include <isl_aff_private.h>
28 #include <isl/list.h>
29
30 struct variable {
31 char *name;
32 int pos;
33 struct variable *next;
34 };
35
36 struct vars {
37 struct isl_ctx *ctx;
38 int n;
39 struct variable *v;
40 };
41
42 static struct vars *vars_new(struct isl_ctx *ctx)
43 {
44 struct vars *v;
45 v = isl_alloc_type(ctx, struct vars);
46 if (!v)
47 return NULL;
48 v->ctx = ctx;
49 v->n = 0;
50 v->v = NULL;
51 return v;
52 }
53
54 static void variable_free(struct variable *var)
55 {
56 while (var) {
57 struct variable *next = var->next;
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 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_calloc_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->next = v->v;
102 return var;
103 error:
104 variable_free(v->v);
105 return NULL;
106 }
107
108 static int vars_pos(struct vars *v, const char *s, int len)
109 {
110 int pos;
111 struct variable *q;
112
113 if (len == -1)
114 len = strlen(s);
115 for (q = v->v; q; q = q->next) {
116 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
117 break;
118 }
119 if (q)
120 pos = q->pos;
121 else {
122 pos = v->n;
123 v->v = variable_new(v, s, len, v->n);
124 if (!v->v)
125 return -1;
126 v->n++;
127 }
128 return pos;
129 }
130
131 static int vars_add_anon(struct vars *v)
132 {
133 v->v = variable_new(v, "", 0, v->n);
134
135 if (!v->v)
136 return -1;
137 v->n++;
138
139 return 0;
140 }
141
142 /* Obtain next token, with some preprocessing.
143 * In particular, evaluate expressions of the form x^y,
144 * with x and y values.
145 */
146 static struct isl_token *next_token(struct isl_stream *s)
147 {
148 struct isl_token *tok, *tok2;
149
150 tok = isl_stream_next_token(s);
151 if (!tok || tok->type != ISL_TOKEN_VALUE)
152 return tok;
153 if (!isl_stream_eat_if_available(s, '^'))
154 return tok;
155 tok2 = isl_stream_next_token(s);
156 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
157 isl_stream_error(s, tok2, "expecting constant value");
158 goto error;
159 }
160
161 isl_int_pow_ui(tok->u.v, tok->u.v, isl_int_get_ui(tok2->u.v));
162
163 isl_token_free(tok2);
164 return tok;
165 error:
166 isl_token_free(tok);
167 isl_token_free(tok2);
168 return NULL;
169 }
170
171 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
172 {
173 struct isl_token *tok;
174
175 tok = next_token(s);
176 if (!tok || tok->type != ISL_TOKEN_VALUE) {
177 isl_stream_error(s, tok, "expecting constant value");
178 goto error;
179 }
180
181 isl_int_mul(*f, *f, tok->u.v);
182
183 isl_token_free(tok);
184
185 if (isl_stream_eat_if_available(s, '*'))
186 return accept_cst_factor(s, f);
187
188 return 0;
189 error:
190 isl_token_free(tok);
191 return -1;
192 }
193
194 /* Given an affine expression aff, return an affine expression
195 * for aff % d, with d the next token on the stream, which is
196 * assumed to be a constant.
197 *
198 * We introduce an integer division q = [aff/d] and the result
199 * is set to aff - d q.
200 */
201 static __isl_give isl_pw_aff *affine_mod(struct isl_stream *s,
202 struct vars *v, __isl_take isl_pw_aff *aff)
203 {
204 struct isl_token *tok;
205 isl_pw_aff *q;
206
207 tok = next_token(s);
208 if (!tok || tok->type != ISL_TOKEN_VALUE) {
209 isl_stream_error(s, tok, "expecting constant value");
210 goto error;
211 }
212
213 q = isl_pw_aff_copy(aff);
214 q = isl_pw_aff_scale_down(q, tok->u.v);
215 q = isl_pw_aff_floor(q);
216 q = isl_pw_aff_scale(q, tok->u.v);
217
218 aff = isl_pw_aff_sub(aff, q);
219
220 isl_token_free(tok);
221 return aff;
222 error:
223 isl_pw_aff_free(aff);
224 isl_token_free(tok);
225 return NULL;
226 }
227
228 static __isl_give isl_pw_aff *accept_affine(struct isl_stream *s,
229 __isl_take isl_space *dim, struct vars *v);
230 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
231 __isl_take isl_space *dim, struct vars *v);
232
233 static __isl_give isl_pw_aff *accept_minmax(struct isl_stream *s,
234 __isl_take isl_space *dim, struct vars *v)
235 {
236 struct isl_token *tok;
237 isl_pw_aff_list *list = NULL;
238 int min;
239
240 tok = isl_stream_next_token(s);
241 if (!tok)
242 goto error;
243 min = tok->type == ISL_TOKEN_MIN;
244 isl_token_free(tok);
245
246 if (isl_stream_eat(s, '('))
247 goto error;
248
249 list = accept_affine_list(s, isl_space_copy(dim), v);
250 if (!list)
251 goto error;
252
253 if (isl_stream_eat(s, ')'))
254 goto error;
255
256 isl_space_free(dim);
257 return min ? isl_pw_aff_list_min(list) : isl_pw_aff_list_max(list);
258 error:
259 isl_space_free(dim);
260 isl_pw_aff_list_free(list);
261 return NULL;
262 }
263
264 static __isl_give isl_pw_aff *accept_div(struct isl_stream *s,
265 __isl_take isl_space *dim, struct vars *v)
266 {
267 struct isl_token *tok;
268 int f = 0;
269 int c = 0;
270 isl_pw_aff *pwaff = NULL;
271
272 if (isl_stream_eat_if_available(s, ISL_TOKEN_FLOORD))
273 f = 1;
274 else if (isl_stream_eat_if_available(s, ISL_TOKEN_CEILD))
275 c = 1;
276 if (f || c) {
277 if (isl_stream_eat(s, '('))
278 goto error;
279 } else {
280 if (isl_stream_eat(s, '['))
281 goto error;
282 }
283
284 pwaff = accept_affine(s, isl_space_copy(dim), v);
285
286 if (f || c) {
287 if (isl_stream_eat(s, ','))
288 goto error;
289
290 tok = next_token(s);
291 if (!tok)
292 goto error;
293 if (tok->type != ISL_TOKEN_VALUE) {
294 isl_stream_error(s, tok, "expected denominator");
295 isl_stream_push_token(s, tok);
296 goto error;
297 }
298 isl_pw_aff_scale_down(pwaff, tok->u.v);
299 isl_token_free(tok);
300 }
301
302 if (c)
303 pwaff = isl_pw_aff_ceil(pwaff);
304 else
305 pwaff = isl_pw_aff_floor(pwaff);
306
307 if (f || c) {
308 if (isl_stream_eat(s, ')'))
309 goto error;
310 } else {
311 if (isl_stream_eat(s, ']'))
312 goto error;
313 }
314
315 isl_space_free(dim);
316 return pwaff;
317 error:
318 isl_space_free(dim);
319 isl_pw_aff_free(pwaff);
320 return NULL;
321 }
322
323 static __isl_give isl_pw_aff *accept_affine_factor(struct isl_stream *s,
324 __isl_take isl_space *dim, struct vars *v)
325 {
326 struct isl_token *tok = NULL;
327 isl_pw_aff *res = NULL;
328
329 tok = next_token(s);
330 if (!tok) {
331 isl_stream_error(s, NULL, "unexpected EOF");
332 goto error;
333 }
334
335 if (tok->type == ISL_TOKEN_AFF) {
336 res = isl_pw_aff_copy(tok->u.pwaff);
337 isl_token_free(tok);
338 } else if (tok->type == ISL_TOKEN_IDENT) {
339 int n = v->n;
340 int pos = vars_pos(v, tok->u.s, -1);
341 isl_aff *aff;
342
343 if (pos < 0)
344 goto error;
345 if (pos >= n) {
346 vars_drop(v, v->n - n);
347 isl_stream_error(s, tok, "unknown identifier");
348 goto error;
349 }
350
351 aff = isl_aff_zero_on_domain(isl_local_space_from_space(isl_space_copy(dim)));
352 if (!aff)
353 goto error;
354 isl_int_set_si(aff->v->el[2 + pos], 1);
355 res = isl_pw_aff_from_aff(aff);
356 isl_token_free(tok);
357 } else if (tok->type == ISL_TOKEN_VALUE) {
358 if (isl_stream_eat_if_available(s, '*')) {
359 res = accept_affine_factor(s, isl_space_copy(dim), v);
360 res = isl_pw_aff_scale(res, tok->u.v);
361 } else {
362 isl_local_space *ls;
363 isl_aff *aff;
364 ls = isl_local_space_from_space(isl_space_copy(dim));
365 aff = isl_aff_zero_on_domain(ls);
366 aff = isl_aff_add_constant(aff, tok->u.v);
367 res = isl_pw_aff_from_aff(aff);
368 }
369 isl_token_free(tok);
370 } else if (tok->type == '(') {
371 isl_token_free(tok);
372 tok = NULL;
373 res = accept_affine(s, isl_space_copy(dim), v);
374 if (!res)
375 goto error;
376 if (isl_stream_eat(s, ')'))
377 goto error;
378 } else if (tok->type == '[' ||
379 tok->type == ISL_TOKEN_FLOORD ||
380 tok->type == ISL_TOKEN_CEILD) {
381 isl_stream_push_token(s, tok);
382 tok = NULL;
383 res = accept_div(s, isl_space_copy(dim), v);
384 } else if (tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX) {
385 isl_stream_push_token(s, tok);
386 tok = NULL;
387 res = accept_minmax(s, isl_space_copy(dim), v);
388 } else {
389 isl_stream_error(s, tok, "expecting factor");
390 goto error;
391 }
392 if (isl_stream_eat_if_available(s, '%') ||
393 isl_stream_eat_if_available(s, ISL_TOKEN_MOD)) {
394 isl_space_free(dim);
395 return affine_mod(s, v, res);
396 }
397 if (isl_stream_eat_if_available(s, '*')) {
398 isl_int f;
399 isl_int_init(f);
400 isl_int_set_si(f, 1);
401 if (accept_cst_factor(s, &f) < 0) {
402 isl_int_clear(f);
403 goto error2;
404 }
405 res = isl_pw_aff_scale(res, f);
406 isl_int_clear(f);
407 }
408 if (isl_stream_eat_if_available(s, '/')) {
409 isl_int f;
410 isl_int_init(f);
411 isl_int_set_si(f, 1);
412 if (accept_cst_factor(s, &f) < 0) {
413 isl_int_clear(f);
414 goto error2;
415 }
416 res = isl_pw_aff_scale_down(res, f);
417 isl_int_clear(f);
418 }
419
420 isl_space_free(dim);
421 return res;
422 error:
423 isl_token_free(tok);
424 error2:
425 isl_pw_aff_free(res);
426 isl_space_free(dim);
427 return NULL;
428 }
429
430 static __isl_give isl_pw_aff *add_cst(__isl_take isl_pw_aff *pwaff, isl_int v)
431 {
432 isl_aff *aff;
433 isl_space *space;
434
435 space = isl_pw_aff_get_domain_space(pwaff);
436 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
437 aff = isl_aff_add_constant(aff, v);
438
439 return isl_pw_aff_add(pwaff, isl_pw_aff_from_aff(aff));
440 }
441
442 static __isl_give isl_pw_aff *accept_affine(struct isl_stream *s,
443 __isl_take isl_space *dim, struct vars *v)
444 {
445 struct isl_token *tok = NULL;
446 isl_local_space *ls;
447 isl_pw_aff *res;
448 int sign = 1;
449
450 ls = isl_local_space_from_space(isl_space_copy(dim));
451 res = isl_pw_aff_from_aff(isl_aff_zero_on_domain(ls));
452 if (!res)
453 goto error;
454
455 for (;;) {
456 tok = next_token(s);
457 if (!tok) {
458 isl_stream_error(s, NULL, "unexpected EOF");
459 goto error;
460 }
461 if (tok->type == '-') {
462 sign = -sign;
463 isl_token_free(tok);
464 continue;
465 }
466 if (tok->type == '(' || tok->type == '[' ||
467 tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX ||
468 tok->type == ISL_TOKEN_FLOORD ||
469 tok->type == ISL_TOKEN_CEILD ||
470 tok->type == ISL_TOKEN_IDENT ||
471 tok->type == ISL_TOKEN_AFF) {
472 isl_pw_aff *term;
473 isl_stream_push_token(s, tok);
474 tok = NULL;
475 term = accept_affine_factor(s, isl_space_copy(dim), v);
476 if (sign < 0)
477 res = isl_pw_aff_sub(res, term);
478 else
479 res = isl_pw_aff_add(res, term);
480 if (!res)
481 goto error;
482 sign = 1;
483 } else if (tok->type == ISL_TOKEN_VALUE) {
484 if (sign < 0)
485 isl_int_neg(tok->u.v, tok->u.v);
486 if (isl_stream_eat_if_available(s, '*') ||
487 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
488 isl_pw_aff *term;
489 term = accept_affine_factor(s,
490 isl_space_copy(dim), v);
491 term = isl_pw_aff_scale(term, tok->u.v);
492 res = isl_pw_aff_add(res, term);
493 if (!res)
494 goto error;
495 } else {
496 res = add_cst(res, tok->u.v);
497 }
498 sign = 1;
499 } else {
500 isl_stream_error(s, tok, "unexpected isl_token");
501 isl_stream_push_token(s, tok);
502 isl_pw_aff_free(res);
503 isl_space_free(dim);
504 return NULL;
505 }
506 isl_token_free(tok);
507
508 tok = next_token(s);
509 if (tok && tok->type == '-') {
510 sign = -sign;
511 isl_token_free(tok);
512 } else if (tok && tok->type == '+') {
513 /* nothing */
514 isl_token_free(tok);
515 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
516 isl_int_is_neg(tok->u.v)) {
517 isl_stream_push_token(s, tok);
518 } else {
519 if (tok)
520 isl_stream_push_token(s, tok);
521 break;
522 }
523 }
524
525 isl_space_free(dim);
526 return res;
527 error:
528 isl_space_free(dim);
529 isl_token_free(tok);
530 isl_pw_aff_free(res);
531 return NULL;
532 }
533
534 static int is_comparator(struct isl_token *tok)
535 {
536 if (!tok)
537 return 0;
538
539 switch (tok->type) {
540 case ISL_TOKEN_LT:
541 case ISL_TOKEN_GT:
542 case ISL_TOKEN_LE:
543 case ISL_TOKEN_GE:
544 case ISL_TOKEN_NE:
545 case '=':
546 return 1;
547 default:
548 return 0;
549 }
550 }
551
552 static struct isl_map *read_disjuncts(struct isl_stream *s,
553 struct vars *v, __isl_take isl_map *map, int rational);
554 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
555 __isl_take isl_space *dim, struct vars *v, int rational);
556
557 /* Accept a ternary operator, given the first argument.
558 */
559 static __isl_give isl_pw_aff *accept_ternary(struct isl_stream *s,
560 __isl_take isl_map *cond, struct vars *v, int rational)
561 {
562 isl_space *dim;
563 isl_pw_aff *pwaff1 = NULL, *pwaff2 = NULL, *pa_cond;
564
565 if (!cond)
566 return NULL;
567
568 if (isl_stream_eat(s, '?'))
569 goto error;
570
571 dim = isl_space_wrap(isl_map_get_space(cond));
572 pwaff1 = accept_extended_affine(s, dim, v, rational);
573 if (!pwaff1)
574 goto error;
575
576 if (isl_stream_eat(s, ':'))
577 goto error;
578
579 dim = isl_pw_aff_get_domain_space(pwaff1);
580 pwaff2 = accept_extended_affine(s, dim, v, rational);
581 if (!pwaff1)
582 goto error;
583
584 pa_cond = isl_set_indicator_function(isl_map_wrap(cond));
585 return isl_pw_aff_cond(pa_cond, pwaff1, pwaff2);
586 error:
587 isl_map_free(cond);
588 isl_pw_aff_free(pwaff1);
589 isl_pw_aff_free(pwaff2);
590 return NULL;
591 }
592
593 /* Accept an affine expression that may involve ternary operators.
594 * We first read an affine expression.
595 * If it is not followed by a comparison operator, we simply return it.
596 * Otherwise, we assume the affine epxression is part of the first
597 * argument of a ternary operator and try to parse that.
598 */
599 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
600 __isl_take isl_space *dim, struct vars *v, int rational)
601 {
602 isl_space *space;
603 isl_map *cond;
604 isl_pw_aff *pwaff;
605 struct isl_token *tok;
606 int line = -1, col = -1;
607 int is_comp;
608
609 tok = isl_stream_next_token(s);
610 if (tok) {
611 line = tok->line;
612 col = tok->col;
613 isl_stream_push_token(s, tok);
614 }
615
616 pwaff = accept_affine(s, dim, v);
617 if (rational)
618 pwaff = isl_pw_aff_set_rational(pwaff);
619 if (!pwaff)
620 return NULL;
621
622 tok = isl_stream_next_token(s);
623 if (!tok)
624 return isl_pw_aff_free(pwaff);
625
626 is_comp = is_comparator(tok);
627 isl_stream_push_token(s, tok);
628 if (!is_comp)
629 return pwaff;
630
631 tok = isl_token_new(s->ctx, line, col, 0);
632 if (!tok)
633 return isl_pw_aff_free(pwaff);
634 tok->type = ISL_TOKEN_AFF;
635 tok->u.pwaff = pwaff;
636
637 space = isl_pw_aff_get_domain_space(pwaff);
638 cond = isl_map_universe(isl_space_unwrap(space));
639
640 isl_stream_push_token(s, tok);
641
642 cond = read_disjuncts(s, v, cond, rational);
643
644 return accept_ternary(s, cond, v, rational);
645 }
646
647 static __isl_give isl_map *read_var_def(struct isl_stream *s,
648 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v,
649 int rational)
650 {
651 isl_pw_aff *def;
652 int pos;
653 isl_map *def_map;
654
655 if (type == isl_dim_param)
656 pos = isl_map_dim(map, isl_dim_param);
657 else {
658 pos = isl_map_dim(map, isl_dim_in);
659 if (type == isl_dim_out)
660 pos += isl_map_dim(map, isl_dim_out);
661 type = isl_dim_in;
662 }
663 --pos;
664
665 def = accept_extended_affine(s, isl_space_wrap(isl_map_get_space(map)),
666 v, rational);
667 def_map = isl_map_from_pw_aff(def);
668 def_map = isl_map_equate(def_map, type, pos, isl_dim_out, 0);
669 def_map = isl_set_unwrap(isl_map_domain(def_map));
670
671 map = isl_map_intersect(map, def_map);
672
673 return map;
674 }
675
676 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
677 __isl_take isl_space *dim, struct vars *v)
678 {
679 isl_pw_aff *pwaff;
680 isl_pw_aff_list *list;
681 struct isl_token *tok = NULL;
682
683 pwaff = accept_affine(s, isl_space_copy(dim), v);
684 list = isl_pw_aff_list_from_pw_aff(pwaff);
685 if (!list)
686 goto error;
687
688 for (;;) {
689 tok = isl_stream_next_token(s);
690 if (!tok) {
691 isl_stream_error(s, NULL, "unexpected EOF");
692 goto error;
693 }
694 if (tok->type != ',') {
695 isl_stream_push_token(s, tok);
696 break;
697 }
698 isl_token_free(tok);
699
700 pwaff = accept_affine(s, isl_space_copy(dim), v);
701 list = isl_pw_aff_list_concat(list,
702 isl_pw_aff_list_from_pw_aff(pwaff));
703 if (!list)
704 goto error;
705 }
706
707 isl_space_free(dim);
708 return list;
709 error:
710 isl_space_free(dim);
711 isl_pw_aff_list_free(list);
712 return NULL;
713 }
714
715 static __isl_give isl_map *read_defined_var_list(struct isl_stream *s,
716 struct vars *v, __isl_take isl_map *map, int rational)
717 {
718 struct isl_token *tok;
719
720 while ((tok = isl_stream_next_token(s)) != NULL) {
721 int p;
722 int n = v->n;
723
724 if (tok->type != ISL_TOKEN_IDENT)
725 break;
726
727 p = vars_pos(v, tok->u.s, -1);
728 if (p < 0)
729 goto error;
730 if (p < n) {
731 isl_stream_error(s, tok, "expecting unique identifier");
732 goto error;
733 }
734
735 map = isl_map_add_dims(map, isl_dim_out, 1);
736
737 isl_token_free(tok);
738 tok = isl_stream_next_token(s);
739 if (tok && tok->type == '=') {
740 isl_token_free(tok);
741 map = read_var_def(s, map, isl_dim_out, v, rational);
742 tok = isl_stream_next_token(s);
743 }
744
745 if (!tok || tok->type != ',')
746 break;
747
748 isl_token_free(tok);
749 }
750 if (tok)
751 isl_stream_push_token(s, tok);
752
753 return map;
754 error:
755 isl_token_free(tok);
756 isl_map_free(map);
757 return NULL;
758 }
759
760 static int next_is_tuple(struct isl_stream *s)
761 {
762 struct isl_token *tok;
763 int is_tuple;
764
765 tok = isl_stream_next_token(s);
766 if (!tok)
767 return 0;
768 if (tok->type == '[') {
769 isl_stream_push_token(s, tok);
770 return 1;
771 }
772 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
773 isl_stream_push_token(s, tok);
774 return 0;
775 }
776
777 is_tuple = isl_stream_next_token_is(s, '[');
778
779 isl_stream_push_token(s, tok);
780
781 return is_tuple;
782 }
783
784 /* Allocate an initial tuple with zero dimensions and an anonymous,
785 * unstructured space.
786 * A tuple is represented as an isl_multi_pw_aff.
787 * The range space is the space of the tuple.
788 * The domain space is an anonymous space
789 * with a dimension for each variable in the set of variables in "v".
790 * If a given dimension is not defined in terms of earlier dimensions in
791 * the input, then the corresponding isl_pw_aff is set equal to one time
792 * the variable corresponding to the dimension being defined.
793 */
794 static __isl_give isl_multi_pw_aff *tuple_alloc(struct vars *v)
795 {
796 return isl_multi_pw_aff_alloc(isl_space_alloc(v->ctx, 0, v->n, 0));
797 }
798
799 /* Is "pa" an expression in term of earlier dimensions?
800 * The alternative is that the dimension is defined to be equal to itself,
801 * meaning that it has a universe domain and an expression that depends
802 * on itself. "i" is the position of the expression in a sequence
803 * of "n" expressions. The final dimensions of "pa" correspond to
804 * these "n" expressions.
805 */
806 static int pw_aff_is_expr(__isl_keep isl_pw_aff *pa, int i, int n)
807 {
808 isl_aff *aff;
809
810 if (!pa)
811 return -1;
812 if (pa->n != 1)
813 return 1;
814 if (!isl_set_plain_is_universe(pa->p[0].set))
815 return 1;
816
817 aff = pa->p[0].aff;
818 if (isl_int_is_zero(aff->v->el[aff->v->size - n + i]))
819 return 1;
820 return 0;
821 }
822
823 /* Does the tuple contain any dimensions that are defined
824 * in terms of earlier dimensions?
825 */
826 static int tuple_has_expr(__isl_keep isl_multi_pw_aff *tuple)
827 {
828 int i, n;
829 int has_expr = 0;
830 isl_pw_aff *pa;
831
832 if (!tuple)
833 return -1;
834 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
835 for (i = 0; i < n; ++i) {
836 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
837 has_expr = pw_aff_is_expr(pa, i, n);
838 isl_pw_aff_free(pa);
839 if (has_expr < 0 || has_expr)
840 break;
841 }
842
843 return has_expr;
844 }
845
846 /* Add a dimension to the given tuple.
847 * The dimension is initially undefined, so it is encoded
848 * as one times itself.
849 */
850 static __isl_give isl_multi_pw_aff *tuple_add_dim(
851 __isl_take isl_multi_pw_aff *tuple, struct vars *v)
852 {
853 isl_space *space;
854 isl_aff *aff;
855 isl_pw_aff *pa;
856
857 tuple = isl_multi_pw_aff_add_dims(tuple, isl_dim_in, 1);
858 space = isl_multi_pw_aff_get_domain_space(tuple);
859 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
860 aff = isl_aff_add_coefficient_si(aff, isl_dim_in, v->n, 1);
861 pa = isl_pw_aff_from_aff(aff);
862 tuple = isl_multi_pw_aff_flat_range_product(tuple,
863 isl_multi_pw_aff_from_pw_aff(pa));
864
865 return tuple;
866 }
867
868 /* Set the name of dimension "pos" in "tuple" to "name".
869 * During printing, we add primes if the same name appears more than once
870 * to distinguish the occurrences. Here, we remove those primes from "name"
871 * before setting the name of the dimension.
872 */
873 static __isl_give isl_multi_pw_aff *tuple_set_dim_name(
874 __isl_take isl_multi_pw_aff *tuple, int pos, char *name)
875 {
876 char *prime;
877
878 if (!name)
879 return tuple;
880
881 prime = strchr(name, '\'');
882 if (prime)
883 *prime = '\0';
884 tuple = isl_multi_pw_aff_set_dim_name(tuple, isl_dim_set, pos, name);
885 if (prime)
886 *prime = '\'';
887
888 return tuple;
889 }
890
891 /* Read an affine expression from "s" and replace the definition
892 * of dimension "pos" in "tuple" by this expression.
893 *
894 * accept_extended_affine requires a wrapped space as input.
895 * The domain space of "tuple", on the other hand is an anonymous space,
896 * so we have to adjust the space of the isl_pw_aff before adding it
897 * to "tuple".
898 */
899 static __isl_give isl_multi_pw_aff *read_tuple_var_def(struct isl_stream *s,
900 __isl_take isl_multi_pw_aff *tuple, int pos, struct vars *v,
901 int rational)
902 {
903 isl_space *space;
904 isl_pw_aff *def;
905
906 space = isl_space_wrap(isl_space_alloc(s->ctx, 0, v->n, 0));
907 def = accept_extended_affine(s, space, v, rational);
908 space = isl_space_set_alloc(s->ctx, 0, v->n);
909 def = isl_pw_aff_reset_domain_space(def, space);
910 tuple = isl_multi_pw_aff_set_pw_aff(tuple, pos, def);
911
912 return tuple;
913 }
914
915 /* Read a list of variables and/or affine expressions and return the list
916 * as an isl_multi_pw_aff.
917 * The elements in the list are separated by either "," or "][".
918 * If "comma" is set then only "," is allowed.
919 */
920 static __isl_give isl_multi_pw_aff *read_tuple_var_list(struct isl_stream *s,
921 struct vars *v, int rational, int comma)
922 {
923 int i = 0;
924 struct isl_token *tok;
925 isl_multi_pw_aff *res;
926
927 res = tuple_alloc(v);
928
929 if (isl_stream_next_token_is(s, ']'))
930 return res;
931
932 while ((tok = next_token(s)) != NULL) {
933 int new_name = 0;
934
935 res = tuple_add_dim(res, v);
936
937 if (tok->type == ISL_TOKEN_IDENT) {
938 int n = v->n;
939 int p = vars_pos(v, tok->u.s, -1);
940 if (p < 0)
941 goto error;
942 new_name = p >= n;
943 }
944
945 if (new_name) {
946 res = tuple_set_dim_name(res, i, v->v->name);
947 isl_token_free(tok);
948 if (isl_stream_eat_if_available(s, '='))
949 res = read_tuple_var_def(s, res, i, v,
950 rational);
951 } else {
952 isl_stream_push_token(s, tok);
953 tok = NULL;
954 if (vars_add_anon(v) < 0)
955 goto error;
956 res = read_tuple_var_def(s, res, i, v, rational);
957 }
958
959 tok = isl_stream_next_token(s);
960 if (!comma && tok && tok->type == ']' &&
961 isl_stream_next_token_is(s, '[')) {
962 isl_token_free(tok);
963 tok = isl_stream_next_token(s);
964 } else if (!tok || tok->type != ',')
965 break;
966
967 isl_token_free(tok);
968 i++;
969 }
970 if (tok)
971 isl_stream_push_token(s, tok);
972
973 return res;
974 error:
975 isl_token_free(tok);
976 return isl_multi_pw_aff_free(res);
977 }
978
979 /* Read a tuple and represent it as an isl_multi_pw_aff. See tuple_alloc.
980 */
981 static __isl_give isl_multi_pw_aff *read_tuple(struct isl_stream *s,
982 struct vars *v, int rational, int comma)
983 {
984 struct isl_token *tok;
985 char *name = NULL;
986 isl_multi_pw_aff *res = NULL;
987
988 tok = isl_stream_next_token(s);
989 if (!tok)
990 goto error;
991 if (tok->type == ISL_TOKEN_IDENT || tok->is_keyword) {
992 name = strdup(tok->u.s);
993 isl_token_free(tok);
994 if (!name)
995 goto error;
996 } else
997 isl_stream_push_token(s, tok);
998 if (isl_stream_eat(s, '['))
999 goto error;
1000 if (next_is_tuple(s)) {
1001 isl_multi_pw_aff *out;
1002 int n;
1003 res = read_tuple(s, v, rational, comma);
1004 if (isl_stream_eat(s, ISL_TOKEN_TO))
1005 goto error;
1006 out = read_tuple(s, v, rational, comma);
1007 n = isl_multi_pw_aff_dim(out, isl_dim_out);
1008 res = isl_multi_pw_aff_add_dims(res, isl_dim_in, n);
1009 res = isl_multi_pw_aff_range_product(res, out);
1010 } else
1011 res = read_tuple_var_list(s, v, rational, comma);
1012 if (isl_stream_eat(s, ']'))
1013 goto error;
1014
1015 if (name) {
1016 res = isl_multi_pw_aff_set_tuple_name(res, isl_dim_out, name);
1017 free(name);
1018 }
1019
1020 return res;
1021 error:
1022 free(name);
1023 return isl_multi_pw_aff_free(res);
1024 }
1025
1026 /* Read a tuple from "s" and add it to "map".
1027 * The tuple is initially represented as an isl_multi_pw_aff.
1028 * We first create the appropriate space in "map" based on the range
1029 * space of this isl_multi_pw_aff. Then, we add equalities based
1030 * on the affine expressions. These live in an anonymous space,
1031 * however, so we first need to reset the space to that of "map".
1032 */
1033 static __isl_give isl_map *read_map_tuple(struct isl_stream *s,
1034 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v,
1035 int rational, int comma)
1036 {
1037 int i, n;
1038 isl_multi_pw_aff *tuple;
1039 isl_space *space = NULL;
1040
1041 tuple = read_tuple(s, v, rational, comma);
1042 if (!tuple)
1043 goto error;
1044
1045 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
1046 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
1047 if (!space)
1048 goto error;
1049
1050 if (type == isl_dim_param) {
1051 if (isl_space_has_tuple_name(space, isl_dim_set) ||
1052 isl_space_is_wrapping(space)) {
1053 isl_die(s->ctx, isl_error_invalid,
1054 "parameter tuples cannot be named or nested",
1055 goto error);
1056 }
1057 map = isl_map_add_dims(map, type, n);
1058 for (i = 0; i < n; ++i) {
1059 isl_id *id;
1060 if (!isl_space_has_dim_name(space, isl_dim_set, i))
1061 isl_die(s->ctx, isl_error_invalid,
1062 "parameters must be named",
1063 goto error);
1064 id = isl_space_get_dim_id(space, isl_dim_set, i);
1065 map = isl_map_set_dim_id(map, isl_dim_param, i, id);
1066 }
1067 } else if (type == isl_dim_in) {
1068 isl_set *set;
1069
1070 set = isl_set_universe(isl_space_copy(space));
1071 if (rational)
1072 set = isl_set_set_rational(set);
1073 set = isl_set_intersect_params(set, isl_map_params(map));
1074 map = isl_map_from_domain(set);
1075 } else {
1076 isl_set *set;
1077
1078 set = isl_set_universe(isl_space_copy(space));
1079 if (rational)
1080 set = isl_set_set_rational(set);
1081 map = isl_map_from_domain_and_range(isl_map_domain(map), set);
1082 }
1083
1084 for (i = 0; i < n; ++i) {
1085 isl_pw_aff *pa;
1086 isl_space *space;
1087 isl_aff *aff;
1088 isl_set *set;
1089 isl_map *map_i;
1090
1091 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
1092 space = isl_pw_aff_get_domain_space(pa);
1093 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
1094 aff = isl_aff_add_coefficient_si(aff,
1095 isl_dim_in, v->n - n + i, -1);
1096 pa = isl_pw_aff_add(pa, isl_pw_aff_from_aff(aff));
1097 if (rational)
1098 pa = isl_pw_aff_set_rational(pa);
1099 set = isl_pw_aff_zero_set(pa);
1100 map_i = isl_map_from_range(set);
1101 map_i = isl_map_reset_space(map_i, isl_map_get_space(map));
1102 map = isl_map_intersect(map, map_i);
1103 }
1104
1105 isl_space_free(space);
1106 isl_multi_pw_aff_free(tuple);
1107 return map;
1108 error:
1109 isl_space_free(space);
1110 isl_multi_pw_aff_free(tuple);
1111 isl_map_free(map);
1112 return NULL;
1113 }
1114
1115 static __isl_give isl_set *construct_constraints(
1116 __isl_take isl_set *set, int type,
1117 __isl_keep isl_pw_aff_list *left, __isl_keep isl_pw_aff_list *right,
1118 int rational)
1119 {
1120 isl_set *cond;
1121
1122 left = isl_pw_aff_list_copy(left);
1123 right = isl_pw_aff_list_copy(right);
1124 if (rational) {
1125 left = isl_pw_aff_list_set_rational(left);
1126 right = isl_pw_aff_list_set_rational(right);
1127 }
1128 if (type == ISL_TOKEN_LE)
1129 cond = isl_pw_aff_list_le_set(left, right);
1130 else if (type == ISL_TOKEN_GE)
1131 cond = isl_pw_aff_list_ge_set(left, right);
1132 else if (type == ISL_TOKEN_LT)
1133 cond = isl_pw_aff_list_lt_set(left, right);
1134 else if (type == ISL_TOKEN_GT)
1135 cond = isl_pw_aff_list_gt_set(left, right);
1136 else if (type == ISL_TOKEN_NE)
1137 cond = isl_pw_aff_list_ne_set(left, right);
1138 else
1139 cond = isl_pw_aff_list_eq_set(left, right);
1140
1141 return isl_set_intersect(set, cond);
1142 }
1143
1144 static __isl_give isl_map *add_constraint(struct isl_stream *s,
1145 struct vars *v, __isl_take isl_map *map, int rational)
1146 {
1147 struct isl_token *tok = NULL;
1148 isl_pw_aff_list *list1 = NULL, *list2 = NULL;
1149 isl_set *set;
1150
1151 set = isl_map_wrap(map);
1152 list1 = accept_affine_list(s, isl_set_get_space(set), v);
1153 if (!list1)
1154 goto error;
1155 tok = isl_stream_next_token(s);
1156 if (!is_comparator(tok)) {
1157 isl_stream_error(s, tok, "missing operator");
1158 if (tok)
1159 isl_stream_push_token(s, tok);
1160 tok = NULL;
1161 goto error;
1162 }
1163 for (;;) {
1164 list2 = accept_affine_list(s, isl_set_get_space(set), v);
1165 if (!list2)
1166 goto error;
1167
1168 set = construct_constraints(set, tok->type, list1, list2,
1169 rational);
1170 isl_token_free(tok);
1171 isl_pw_aff_list_free(list1);
1172 list1 = list2;
1173
1174 tok = isl_stream_next_token(s);
1175 if (!is_comparator(tok)) {
1176 if (tok)
1177 isl_stream_push_token(s, tok);
1178 break;
1179 }
1180 }
1181 isl_pw_aff_list_free(list1);
1182
1183 return isl_set_unwrap(set);
1184 error:
1185 if (tok)
1186 isl_token_free(tok);
1187 isl_pw_aff_list_free(list1);
1188 isl_pw_aff_list_free(list2);
1189 isl_set_free(set);
1190 return NULL;
1191 }
1192
1193 static __isl_give isl_map *read_exists(struct isl_stream *s,
1194 struct vars *v, __isl_take isl_map *map, int rational)
1195 {
1196 int n = v->n;
1197 int seen_paren = isl_stream_eat_if_available(s, '(');
1198
1199 map = isl_map_from_domain(isl_map_wrap(map));
1200 map = read_defined_var_list(s, v, map, rational);
1201
1202 if (isl_stream_eat(s, ':'))
1203 goto error;
1204
1205 map = read_disjuncts(s, v, map, rational);
1206 map = isl_set_unwrap(isl_map_domain(map));
1207
1208 vars_drop(v, v->n - n);
1209 if (seen_paren && isl_stream_eat(s, ')'))
1210 goto error;
1211
1212 return map;
1213 error:
1214 isl_map_free(map);
1215 return NULL;
1216 }
1217
1218 /* Parse an expression between parentheses and push the result
1219 * back on the stream.
1220 *
1221 * The parsed expression may be either an affine expression
1222 * or a condition. The first type is pushed onto the stream
1223 * as an isl_pw_aff, while the second is pushed as an isl_map.
1224 *
1225 * If the initial token indicates the start of a condition,
1226 * we parse it as such.
1227 * Otherwise, we first parse an affine expression and push
1228 * that onto the stream. If the affine expression covers the
1229 * entire expression between parentheses, we return.
1230 * Otherwise, we assume that the affine expression is the
1231 * start of a condition and continue parsing.
1232 */
1233 static int resolve_paren_expr(struct isl_stream *s,
1234 struct vars *v, __isl_take isl_map *map, int rational)
1235 {
1236 struct isl_token *tok, *tok2;
1237 int line, col;
1238 isl_pw_aff *pwaff;
1239
1240 tok = isl_stream_next_token(s);
1241 if (!tok || tok->type != '(')
1242 goto error;
1243
1244 if (isl_stream_next_token_is(s, '('))
1245 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1246 goto error;
1247
1248 if (isl_stream_next_token_is(s, ISL_TOKEN_EXISTS) ||
1249 isl_stream_next_token_is(s, ISL_TOKEN_NOT) ||
1250 isl_stream_next_token_is(s, ISL_TOKEN_TRUE) ||
1251 isl_stream_next_token_is(s, ISL_TOKEN_FALSE) ||
1252 isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1253 map = read_disjuncts(s, v, map, rational);
1254 if (isl_stream_eat(s, ')'))
1255 goto error;
1256 tok->type = ISL_TOKEN_MAP;
1257 tok->u.map = map;
1258 isl_stream_push_token(s, tok);
1259 return 0;
1260 }
1261
1262 tok2 = isl_stream_next_token(s);
1263 if (!tok2)
1264 goto error;
1265 line = tok2->line;
1266 col = tok2->col;
1267 isl_stream_push_token(s, tok2);
1268
1269 pwaff = accept_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
1270 if (!pwaff)
1271 goto error;
1272
1273 tok2 = isl_token_new(s->ctx, line, col, 0);
1274 if (!tok2)
1275 goto error2;
1276 tok2->type = ISL_TOKEN_AFF;
1277 tok2->u.pwaff = pwaff;
1278
1279 if (isl_stream_eat_if_available(s, ')')) {
1280 isl_stream_push_token(s, tok2);
1281 isl_token_free(tok);
1282 isl_map_free(map);
1283 return 0;
1284 }
1285
1286 isl_stream_push_token(s, tok2);
1287
1288 map = read_disjuncts(s, v, map, rational);
1289 if (isl_stream_eat(s, ')'))
1290 goto error;
1291
1292 tok->type = ISL_TOKEN_MAP;
1293 tok->u.map = map;
1294 isl_stream_push_token(s, tok);
1295
1296 return 0;
1297 error2:
1298 isl_pw_aff_free(pwaff);
1299 error:
1300 isl_token_free(tok);
1301 isl_map_free(map);
1302 return -1;
1303 }
1304
1305 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1306 struct vars *v, __isl_take isl_map *map, int rational)
1307 {
1308 if (isl_stream_next_token_is(s, '('))
1309 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1310 goto error;
1311
1312 if (isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1313 struct isl_token *tok;
1314 tok = isl_stream_next_token(s);
1315 if (!tok)
1316 goto error;
1317 isl_map_free(map);
1318 map = isl_map_copy(tok->u.map);
1319 isl_token_free(tok);
1320 return map;
1321 }
1322
1323 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1324 return read_exists(s, v, map, rational);
1325
1326 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1327 return map;
1328
1329 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1330 isl_space *dim = isl_map_get_space(map);
1331 isl_map_free(map);
1332 return isl_map_empty(dim);
1333 }
1334
1335 return add_constraint(s, v, map, rational);
1336 error:
1337 isl_map_free(map);
1338 return NULL;
1339 }
1340
1341 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1342 struct vars *v, __isl_take isl_map *map, int rational)
1343 {
1344 isl_map *res;
1345 int negate;
1346
1347 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1348 res = read_conjunct(s, v, isl_map_copy(map), rational);
1349 if (negate)
1350 res = isl_map_subtract(isl_map_copy(map), res);
1351
1352 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1353 isl_map *res_i;
1354
1355 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1356 res_i = read_conjunct(s, v, isl_map_copy(map), rational);
1357 if (negate)
1358 res = isl_map_subtract(res, res_i);
1359 else
1360 res = isl_map_intersect(res, res_i);
1361 }
1362
1363 isl_map_free(map);
1364 return res;
1365 }
1366
1367 static struct isl_map *read_disjuncts(struct isl_stream *s,
1368 struct vars *v, __isl_take isl_map *map, int rational)
1369 {
1370 isl_map *res;
1371
1372 if (isl_stream_next_token_is(s, '}')) {
1373 isl_space *dim = isl_map_get_space(map);
1374 isl_map_free(map);
1375 return isl_map_universe(dim);
1376 }
1377
1378 res = read_conjuncts(s, v, isl_map_copy(map), rational);
1379 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1380 isl_map *res_i;
1381
1382 res_i = read_conjuncts(s, v, isl_map_copy(map), rational);
1383 res = isl_map_union(res, res_i);
1384 }
1385
1386 isl_map_free(map);
1387 return res;
1388 }
1389
1390 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1391 {
1392 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1393 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1394 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1395 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1396
1397 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1398 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1399 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1400
1401 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1402 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1403 isl_basic_map_dim(bmap, isl_dim_in) +
1404 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1405 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1406
1407 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1408 return 1 + pos;
1409
1410 return 0;
1411 }
1412
1413 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1414 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1415 {
1416 int j;
1417 struct isl_token *tok;
1418 int type;
1419 int k;
1420 isl_int *c;
1421 unsigned nparam;
1422 unsigned dim;
1423
1424 if (!bmap)
1425 return NULL;
1426
1427 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1428 dim = isl_basic_map_dim(bmap, isl_dim_out);
1429
1430 tok = isl_stream_next_token(s);
1431 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1432 isl_stream_error(s, tok, "expecting coefficient");
1433 if (tok)
1434 isl_stream_push_token(s, tok);
1435 goto error;
1436 }
1437 if (!tok->on_new_line) {
1438 isl_stream_error(s, tok, "coefficient should appear on new line");
1439 isl_stream_push_token(s, tok);
1440 goto error;
1441 }
1442
1443 type = isl_int_get_si(tok->u.v);
1444 isl_token_free(tok);
1445
1446 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1447 if (type == 0) {
1448 k = isl_basic_map_alloc_equality(bmap);
1449 c = bmap->eq[k];
1450 } else {
1451 k = isl_basic_map_alloc_inequality(bmap);
1452 c = bmap->ineq[k];
1453 }
1454 if (k < 0)
1455 goto error;
1456
1457 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1458 int pos;
1459 tok = isl_stream_next_token(s);
1460 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1461 isl_stream_error(s, tok, "expecting coefficient");
1462 if (tok)
1463 isl_stream_push_token(s, tok);
1464 goto error;
1465 }
1466 if (tok->on_new_line) {
1467 isl_stream_error(s, tok,
1468 "coefficient should not appear on new line");
1469 isl_stream_push_token(s, tok);
1470 goto error;
1471 }
1472 pos = polylib_pos_to_isl_pos(bmap, j);
1473 isl_int_set(c[pos], tok->u.v);
1474 isl_token_free(tok);
1475 }
1476
1477 return bmap;
1478 error:
1479 isl_basic_map_free(bmap);
1480 return NULL;
1481 }
1482
1483 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s)
1484 {
1485 int i;
1486 struct isl_token *tok;
1487 struct isl_token *tok2;
1488 int n_row, n_col;
1489 int on_new_line;
1490 unsigned in = 0, out, local = 0;
1491 struct isl_basic_map *bmap = NULL;
1492 int nparam = 0;
1493
1494 tok = isl_stream_next_token(s);
1495 if (!tok) {
1496 isl_stream_error(s, NULL, "unexpected EOF");
1497 return NULL;
1498 }
1499 tok2 = isl_stream_next_token(s);
1500 if (!tok2) {
1501 isl_token_free(tok);
1502 isl_stream_error(s, NULL, "unexpected EOF");
1503 return NULL;
1504 }
1505 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1506 isl_stream_push_token(s, tok2);
1507 isl_stream_push_token(s, tok);
1508 isl_stream_error(s, NULL,
1509 "expecting constraint matrix dimensions");
1510 return NULL;
1511 }
1512 n_row = isl_int_get_si(tok->u.v);
1513 n_col = isl_int_get_si(tok2->u.v);
1514 on_new_line = tok2->on_new_line;
1515 isl_token_free(tok2);
1516 isl_token_free(tok);
1517 isl_assert(s->ctx, !on_new_line, return NULL);
1518 isl_assert(s->ctx, n_row >= 0, return NULL);
1519 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1520 tok = isl_stream_next_token_on_same_line(s);
1521 if (tok) {
1522 if (tok->type != ISL_TOKEN_VALUE) {
1523 isl_stream_error(s, tok,
1524 "expecting number of output dimensions");
1525 isl_stream_push_token(s, tok);
1526 goto error;
1527 }
1528 out = isl_int_get_si(tok->u.v);
1529 isl_token_free(tok);
1530
1531 tok = isl_stream_next_token_on_same_line(s);
1532 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1533 isl_stream_error(s, tok,
1534 "expecting number of input dimensions");
1535 if (tok)
1536 isl_stream_push_token(s, tok);
1537 goto error;
1538 }
1539 in = isl_int_get_si(tok->u.v);
1540 isl_token_free(tok);
1541
1542 tok = isl_stream_next_token_on_same_line(s);
1543 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1544 isl_stream_error(s, tok,
1545 "expecting number of existentials");
1546 if (tok)
1547 isl_stream_push_token(s, tok);
1548 goto error;
1549 }
1550 local = isl_int_get_si(tok->u.v);
1551 isl_token_free(tok);
1552
1553 tok = isl_stream_next_token_on_same_line(s);
1554 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1555 isl_stream_error(s, tok,
1556 "expecting number of parameters");
1557 if (tok)
1558 isl_stream_push_token(s, tok);
1559 goto error;
1560 }
1561 nparam = isl_int_get_si(tok->u.v);
1562 isl_token_free(tok);
1563 if (n_col != 1 + out + in + local + nparam + 1) {
1564 isl_stream_error(s, NULL,
1565 "dimensions don't match");
1566 goto error;
1567 }
1568 } else
1569 out = n_col - 2 - nparam;
1570 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1571 if (!bmap)
1572 return NULL;
1573
1574 for (i = 0; i < local; ++i) {
1575 int k = isl_basic_map_alloc_div(bmap);
1576 if (k < 0)
1577 goto error;
1578 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1579 }
1580
1581 for (i = 0; i < n_row; ++i)
1582 bmap = basic_map_read_polylib_constraint(s, bmap);
1583
1584 tok = isl_stream_next_token_on_same_line(s);
1585 if (tok) {
1586 isl_stream_error(s, tok, "unexpected extra token on line");
1587 isl_stream_push_token(s, tok);
1588 goto error;
1589 }
1590
1591 bmap = isl_basic_map_simplify(bmap);
1592 bmap = isl_basic_map_finalize(bmap);
1593 return bmap;
1594 error:
1595 isl_basic_map_free(bmap);
1596 return NULL;
1597 }
1598
1599 static struct isl_map *map_read_polylib(struct isl_stream *s)
1600 {
1601 struct isl_token *tok;
1602 struct isl_token *tok2;
1603 int i, n;
1604 struct isl_map *map;
1605
1606 tok = isl_stream_next_token(s);
1607 if (!tok) {
1608 isl_stream_error(s, NULL, "unexpected EOF");
1609 return NULL;
1610 }
1611 tok2 = isl_stream_next_token_on_same_line(s);
1612 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1613 isl_stream_push_token(s, tok2);
1614 isl_stream_push_token(s, tok);
1615 return isl_map_from_basic_map(basic_map_read_polylib(s));
1616 }
1617 if (tok2) {
1618 isl_stream_error(s, tok2, "unexpected token");
1619 isl_stream_push_token(s, tok2);
1620 isl_stream_push_token(s, tok);
1621 return NULL;
1622 }
1623 n = isl_int_get_si(tok->u.v);
1624 isl_token_free(tok);
1625
1626 isl_assert(s->ctx, n >= 1, return NULL);
1627
1628 map = isl_map_from_basic_map(basic_map_read_polylib(s));
1629
1630 for (i = 1; map && i < n; ++i)
1631 map = isl_map_union(map,
1632 isl_map_from_basic_map(basic_map_read_polylib(s)));
1633
1634 return map;
1635 }
1636
1637 static int optional_power(struct isl_stream *s)
1638 {
1639 int pow;
1640 struct isl_token *tok;
1641
1642 tok = isl_stream_next_token(s);
1643 if (!tok)
1644 return 1;
1645 if (tok->type != '^') {
1646 isl_stream_push_token(s, tok);
1647 return 1;
1648 }
1649 isl_token_free(tok);
1650 tok = isl_stream_next_token(s);
1651 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1652 isl_stream_error(s, tok, "expecting exponent");
1653 if (tok)
1654 isl_stream_push_token(s, tok);
1655 return 1;
1656 }
1657 pow = isl_int_get_si(tok->u.v);
1658 isl_token_free(tok);
1659 return pow;
1660 }
1661
1662 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1663 __isl_keep isl_map *map, struct vars *v);
1664
1665 static __isl_give isl_pw_qpolynomial *read_factor(struct isl_stream *s,
1666 __isl_keep isl_map *map, struct vars *v)
1667 {
1668 isl_pw_qpolynomial *pwqp;
1669 struct isl_token *tok;
1670
1671 tok = next_token(s);
1672 if (!tok) {
1673 isl_stream_error(s, NULL, "unexpected EOF");
1674 return NULL;
1675 }
1676 if (tok->type == '(') {
1677 int pow;
1678
1679 isl_token_free(tok);
1680 pwqp = read_term(s, map, v);
1681 if (!pwqp)
1682 return NULL;
1683 if (isl_stream_eat(s, ')'))
1684 goto error;
1685 pow = optional_power(s);
1686 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1687 } else if (tok->type == ISL_TOKEN_VALUE) {
1688 struct isl_token *tok2;
1689 tok2 = isl_stream_next_token(s);
1690 isl_qpolynomial *qp;
1691 if (tok2 && tok2->type == '/') {
1692 isl_token_free(tok2);
1693 tok2 = next_token(s);
1694 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1695 isl_stream_error(s, tok2, "expected denominator");
1696 isl_token_free(tok);
1697 isl_token_free(tok2);
1698 return NULL;
1699 }
1700 qp = isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map),
1701 tok->u.v, tok2->u.v);
1702 isl_token_free(tok2);
1703 } else {
1704 isl_stream_push_token(s, tok2);
1705 qp = isl_qpolynomial_cst_on_domain(isl_map_get_space(map),
1706 tok->u.v);
1707 }
1708 isl_token_free(tok);
1709 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1710 } else if (tok->type == ISL_TOKEN_INFTY) {
1711 isl_qpolynomial *qp;
1712 isl_token_free(tok);
1713 qp = isl_qpolynomial_infty_on_domain(isl_map_get_space(map));
1714 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1715 } else if (tok->type == ISL_TOKEN_NAN) {
1716 isl_qpolynomial *qp;
1717 isl_token_free(tok);
1718 qp = isl_qpolynomial_nan_on_domain(isl_map_get_space(map));
1719 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1720 } else if (tok->type == ISL_TOKEN_IDENT) {
1721 int n = v->n;
1722 int pos = vars_pos(v, tok->u.s, -1);
1723 int pow;
1724 isl_qpolynomial *qp;
1725 if (pos < 0) {
1726 isl_token_free(tok);
1727 return NULL;
1728 }
1729 if (pos >= n) {
1730 vars_drop(v, v->n - n);
1731 isl_stream_error(s, tok, "unknown identifier");
1732 isl_token_free(tok);
1733 return NULL;
1734 }
1735 isl_token_free(tok);
1736 pow = optional_power(s);
1737 qp = isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map), pos, pow);
1738 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1739 } else if (tok->type == '[') {
1740 isl_pw_aff *pwaff;
1741 int pow;
1742
1743 isl_stream_push_token(s, tok);
1744 pwaff = accept_div(s, isl_map_get_space(map), v);
1745 pow = optional_power(s);
1746 pwqp = isl_pw_qpolynomial_from_pw_aff(pwaff);
1747 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1748 } else if (tok->type == '-') {
1749 isl_token_free(tok);
1750 pwqp = read_factor(s, map, v);
1751 pwqp = isl_pw_qpolynomial_neg(pwqp);
1752 } else {
1753 isl_stream_error(s, tok, "unexpected isl_token");
1754 isl_stream_push_token(s, tok);
1755 return NULL;
1756 }
1757
1758 if (isl_stream_eat_if_available(s, '*') ||
1759 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1760 isl_pw_qpolynomial *pwqp2;
1761
1762 pwqp2 = read_factor(s, map, v);
1763 pwqp = isl_pw_qpolynomial_mul(pwqp, pwqp2);
1764 }
1765
1766 return pwqp;
1767 error:
1768 isl_pw_qpolynomial_free(pwqp);
1769 return NULL;
1770 }
1771
1772 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1773 __isl_keep isl_map *map, struct vars *v)
1774 {
1775 struct isl_token *tok;
1776 isl_pw_qpolynomial *pwqp;
1777
1778 pwqp = read_factor(s, map, v);
1779
1780 for (;;) {
1781 tok = next_token(s);
1782 if (!tok)
1783 return pwqp;
1784
1785 if (tok->type == '+') {
1786 isl_pw_qpolynomial *pwqp2;
1787
1788 isl_token_free(tok);
1789 pwqp2 = read_factor(s, map, v);
1790 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1791 } else if (tok->type == '-') {
1792 isl_pw_qpolynomial *pwqp2;
1793
1794 isl_token_free(tok);
1795 pwqp2 = read_factor(s, map, v);
1796 pwqp = isl_pw_qpolynomial_sub(pwqp, pwqp2);
1797 } else if (tok->type == ISL_TOKEN_VALUE &&
1798 isl_int_is_neg(tok->u.v)) {
1799 isl_pw_qpolynomial *pwqp2;
1800
1801 isl_stream_push_token(s, tok);
1802 pwqp2 = read_factor(s, map, v);
1803 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1804 } else {
1805 isl_stream_push_token(s, tok);
1806 break;
1807 }
1808 }
1809
1810 return pwqp;
1811 }
1812
1813 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1814 __isl_take isl_map *map, struct vars *v, int rational)
1815 {
1816 struct isl_token *tok;
1817
1818 tok = isl_stream_next_token(s);
1819 if (!tok) {
1820 isl_stream_error(s, NULL, "unexpected EOF");
1821 goto error;
1822 }
1823 if (tok->type == ':' ||
1824 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1825 isl_token_free(tok);
1826 map = read_disjuncts(s, v, map, rational);
1827 } else
1828 isl_stream_push_token(s, tok);
1829
1830 return map;
1831 error:
1832 isl_map_free(map);
1833 return NULL;
1834 }
1835
1836 static struct isl_obj obj_read_poly(struct isl_stream *s,
1837 __isl_take isl_map *map, struct vars *v, int n)
1838 {
1839 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1840 isl_pw_qpolynomial *pwqp;
1841 struct isl_set *set;
1842
1843 pwqp = read_term(s, map, v);
1844 map = read_optional_disjuncts(s, map, v, 0);
1845 set = isl_map_range(map);
1846
1847 pwqp = isl_pw_qpolynomial_intersect_domain(pwqp, set);
1848
1849 vars_drop(v, v->n - n);
1850
1851 obj.v = pwqp;
1852 return obj;
1853 }
1854
1855 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1856 __isl_take isl_set *set, struct vars *v, int n)
1857 {
1858 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1859 isl_pw_qpolynomial *pwqp;
1860 isl_pw_qpolynomial_fold *pwf = NULL;
1861
1862 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1863 return obj_read_poly(s, set, v, n);
1864
1865 if (isl_stream_eat(s, '('))
1866 goto error;
1867
1868 pwqp = read_term(s, set, v);
1869 pwf = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max, pwqp);
1870
1871 while (isl_stream_eat_if_available(s, ',')) {
1872 isl_pw_qpolynomial_fold *pwf_i;
1873 pwqp = read_term(s, set, v);
1874 pwf_i = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max,
1875 pwqp);
1876 pwf = isl_pw_qpolynomial_fold_fold(pwf, pwf_i);
1877 }
1878
1879 if (isl_stream_eat(s, ')'))
1880 goto error;
1881
1882 set = read_optional_disjuncts(s, set, v, 0);
1883 pwf = isl_pw_qpolynomial_fold_intersect_domain(pwf, set);
1884
1885 vars_drop(v, v->n - n);
1886
1887 obj.v = pwf;
1888 return obj;
1889 error:
1890 isl_set_free(set);
1891 isl_pw_qpolynomial_fold_free(pwf);
1892 obj.type = isl_obj_none;
1893 return obj;
1894 }
1895
1896 static int is_rational(struct isl_stream *s)
1897 {
1898 struct isl_token *tok;
1899
1900 tok = isl_stream_next_token(s);
1901 if (!tok)
1902 return 0;
1903 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1904 isl_token_free(tok);
1905 isl_stream_eat(s, ':');
1906 return 1;
1907 }
1908
1909 isl_stream_push_token(s, tok);
1910
1911 return 0;
1912 }
1913
1914 static struct isl_obj obj_read_body(struct isl_stream *s,
1915 __isl_take isl_map *map, struct vars *v)
1916 {
1917 struct isl_token *tok;
1918 struct isl_obj obj = { isl_obj_set, NULL };
1919 int n = v->n;
1920 int rational;
1921
1922 rational = is_rational(s);
1923 if (rational)
1924 map = isl_map_set_rational(map);
1925
1926 if (isl_stream_next_token_is(s, ':')) {
1927 obj.type = isl_obj_set;
1928 obj.v = read_optional_disjuncts(s, map, v, rational);
1929 return obj;
1930 }
1931
1932 if (!next_is_tuple(s))
1933 return obj_read_poly_or_fold(s, map, v, n);
1934
1935 map = read_map_tuple(s, map, isl_dim_in, v, rational, 0);
1936 if (!map)
1937 goto error;
1938 tok = isl_stream_next_token(s);
1939 if (!tok)
1940 goto error;
1941 if (tok->type == ISL_TOKEN_TO) {
1942 obj.type = isl_obj_map;
1943 isl_token_free(tok);
1944 if (!next_is_tuple(s)) {
1945 isl_set *set = isl_map_domain(map);
1946 return obj_read_poly_or_fold(s, set, v, n);
1947 }
1948 map = read_map_tuple(s, map, isl_dim_out, v, rational, 0);
1949 if (!map)
1950 goto error;
1951 } else {
1952 map = isl_map_domain(map);
1953 isl_stream_push_token(s, tok);
1954 }
1955
1956 map = read_optional_disjuncts(s, map, v, rational);
1957
1958 vars_drop(v, v->n - n);
1959
1960 obj.v = map;
1961 return obj;
1962 error:
1963 isl_map_free(map);
1964 obj.type = isl_obj_none;
1965 return obj;
1966 }
1967
1968 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1969 {
1970 if (obj.type == isl_obj_map) {
1971 obj.v = isl_union_map_from_map(obj.v);
1972 obj.type = isl_obj_union_map;
1973 } else if (obj.type == isl_obj_set) {
1974 obj.v = isl_union_set_from_set(obj.v);
1975 obj.type = isl_obj_union_set;
1976 } else if (obj.type == isl_obj_pw_qpolynomial) {
1977 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1978 obj.type = isl_obj_union_pw_qpolynomial;
1979 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1980 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1981 obj.type = isl_obj_union_pw_qpolynomial_fold;
1982 } else
1983 isl_assert(ctx, 0, goto error);
1984 return obj;
1985 error:
1986 obj.type->free(obj.v);
1987 obj.type = isl_obj_none;
1988 return obj;
1989 }
1990
1991 static struct isl_obj obj_add(struct isl_ctx *ctx,
1992 struct isl_obj obj1, struct isl_obj obj2)
1993 {
1994 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1995 obj1 = to_union(ctx, obj1);
1996 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1997 obj2 = to_union(ctx, obj2);
1998 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1999 obj1 = to_union(ctx, obj1);
2000 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
2001 obj2 = to_union(ctx, obj2);
2002 if (obj1.type == isl_obj_pw_qpolynomial &&
2003 obj2.type == isl_obj_union_pw_qpolynomial)
2004 obj1 = to_union(ctx, obj1);
2005 if (obj1.type == isl_obj_union_pw_qpolynomial &&
2006 obj2.type == isl_obj_pw_qpolynomial)
2007 obj2 = to_union(ctx, obj2);
2008 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2009 obj2.type == isl_obj_union_pw_qpolynomial_fold)
2010 obj1 = to_union(ctx, obj1);
2011 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
2012 obj2.type == isl_obj_pw_qpolynomial_fold)
2013 obj2 = to_union(ctx, obj2);
2014 isl_assert(ctx, obj1.type == obj2.type, goto error);
2015 if (obj1.type == isl_obj_map && !isl_map_has_equal_space(obj1.v, obj2.v)) {
2016 obj1 = to_union(ctx, obj1);
2017 obj2 = to_union(ctx, obj2);
2018 }
2019 if (obj1.type == isl_obj_set && !isl_set_has_equal_space(obj1.v, obj2.v)) {
2020 obj1 = to_union(ctx, obj1);
2021 obj2 = to_union(ctx, obj2);
2022 }
2023 if (obj1.type == isl_obj_pw_qpolynomial &&
2024 !isl_pw_qpolynomial_has_equal_space(obj1.v, obj2.v)) {
2025 obj1 = to_union(ctx, obj1);
2026 obj2 = to_union(ctx, obj2);
2027 }
2028 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2029 !isl_pw_qpolynomial_fold_has_equal_space(obj1.v, obj2.v)) {
2030 obj1 = to_union(ctx, obj1);
2031 obj2 = to_union(ctx, obj2);
2032 }
2033 obj1.v = obj1.type->add(obj1.v, obj2.v);
2034 return obj1;
2035 error:
2036 obj1.type->free(obj1.v);
2037 obj2.type->free(obj2.v);
2038 obj1.type = isl_obj_none;
2039 obj1.v = NULL;
2040 return obj1;
2041 }
2042
2043 static struct isl_obj obj_read(struct isl_stream *s)
2044 {
2045 isl_map *map = NULL;
2046 struct isl_token *tok;
2047 struct vars *v = NULL;
2048 struct isl_obj obj = { isl_obj_set, NULL };
2049
2050 tok = next_token(s);
2051 if (!tok) {
2052 isl_stream_error(s, NULL, "unexpected EOF");
2053 goto error;
2054 }
2055 if (tok->type == ISL_TOKEN_VALUE) {
2056 struct isl_token *tok2;
2057 struct isl_map *map;
2058
2059 tok2 = isl_stream_next_token(s);
2060 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
2061 isl_int_is_neg(tok2->u.v)) {
2062 if (tok2)
2063 isl_stream_push_token(s, tok2);
2064 obj.type = isl_obj_int;
2065 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
2066 isl_token_free(tok);
2067 return obj;
2068 }
2069 isl_stream_push_token(s, tok2);
2070 isl_stream_push_token(s, tok);
2071 map = map_read_polylib(s);
2072 if (!map)
2073 goto error;
2074 if (isl_map_may_be_set(map))
2075 obj.v = isl_map_range(map);
2076 else {
2077 obj.type = isl_obj_map;
2078 obj.v = map;
2079 }
2080 return obj;
2081 }
2082 v = vars_new(s->ctx);
2083 if (!v) {
2084 isl_stream_push_token(s, tok);
2085 goto error;
2086 }
2087 map = isl_map_universe(isl_space_params_alloc(s->ctx, 0));
2088 if (tok->type == '[') {
2089 isl_stream_push_token(s, tok);
2090 map = read_map_tuple(s, map, isl_dim_param, v, 0, 0);
2091 if (!map)
2092 goto error;
2093 tok = isl_stream_next_token(s);
2094 if (!tok || tok->type != ISL_TOKEN_TO) {
2095 isl_stream_error(s, tok, "expecting '->'");
2096 if (tok)
2097 isl_stream_push_token(s, tok);
2098 goto error;
2099 }
2100 isl_token_free(tok);
2101 tok = isl_stream_next_token(s);
2102 }
2103 if (!tok || tok->type != '{') {
2104 isl_stream_error(s, tok, "expecting '{'");
2105 if (tok)
2106 isl_stream_push_token(s, tok);
2107 goto error;
2108 }
2109 isl_token_free(tok);
2110
2111 tok = isl_stream_next_token(s);
2112 if (!tok)
2113 ;
2114 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
2115 isl_token_free(tok);
2116 if (isl_stream_eat(s, '='))
2117 goto error;
2118 map = read_map_tuple(s, map, isl_dim_param, v, 0, 1);
2119 if (!map)
2120 goto error;
2121 } else if (tok->type == '}') {
2122 obj.type = isl_obj_union_set;
2123 obj.v = isl_union_set_empty(isl_map_get_space(map));
2124 isl_token_free(tok);
2125 goto done;
2126 } else
2127 isl_stream_push_token(s, tok);
2128
2129 for (;;) {
2130 struct isl_obj o;
2131 tok = NULL;
2132 o = obj_read_body(s, isl_map_copy(map), v);
2133 if (o.type == isl_obj_none || !o.v)
2134 goto error;
2135 if (!obj.v)
2136 obj = o;
2137 else {
2138 obj = obj_add(s->ctx, obj, o);
2139 if (obj.type == isl_obj_none || !obj.v)
2140 goto error;
2141 }
2142 tok = isl_stream_next_token(s);
2143 if (!tok || tok->type != ';')
2144 break;
2145 isl_token_free(tok);
2146 if (isl_stream_next_token_is(s, '}')) {
2147 tok = isl_stream_next_token(s);
2148 break;
2149 }
2150 }
2151
2152 if (tok && tok->type == '}') {
2153 isl_token_free(tok);
2154 } else {
2155 isl_stream_error(s, tok, "unexpected isl_token");
2156 if (tok)
2157 isl_token_free(tok);
2158 goto error;
2159 }
2160 done:
2161 vars_free(v);
2162 isl_map_free(map);
2163
2164 return obj;
2165 error:
2166 isl_map_free(map);
2167 obj.type->free(obj.v);
2168 if (v)
2169 vars_free(v);
2170 obj.v = NULL;
2171 return obj;
2172 }
2173
2174 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
2175 {
2176 return obj_read(s);
2177 }
2178
2179 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s)
2180 {
2181 struct isl_obj obj;
2182
2183 obj = obj_read(s);
2184 if (obj.v)
2185 isl_assert(s->ctx, obj.type == isl_obj_map ||
2186 obj.type == isl_obj_set, goto error);
2187
2188 if (obj.type == isl_obj_set)
2189 obj.v = isl_map_from_range(obj.v);
2190
2191 return obj.v;
2192 error:
2193 obj.type->free(obj.v);
2194 return NULL;
2195 }
2196
2197 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s)
2198 {
2199 struct isl_obj obj;
2200
2201 obj = obj_read(s);
2202 if (obj.v) {
2203 if (obj.type == isl_obj_map && isl_map_may_be_set(obj.v)) {
2204 obj.v = isl_map_range(obj.v);
2205 obj.type = isl_obj_set;
2206 }
2207 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2208 }
2209
2210 return obj.v;
2211 error:
2212 obj.type->free(obj.v);
2213 return NULL;
2214 }
2215
2216 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2217 {
2218 struct isl_obj obj;
2219
2220 obj = obj_read(s);
2221 if (obj.type == isl_obj_map) {
2222 obj.type = isl_obj_union_map;
2223 obj.v = isl_union_map_from_map(obj.v);
2224 }
2225 if (obj.type == isl_obj_set) {
2226 obj.type = isl_obj_union_set;
2227 obj.v = isl_union_set_from_set(obj.v);
2228 }
2229 if (obj.v && obj.type == isl_obj_union_set &&
2230 isl_union_set_is_empty(obj.v))
2231 obj.type = isl_obj_union_map;
2232 if (obj.v && obj.type != isl_obj_union_map)
2233 isl_die(s->ctx, isl_error_invalid, "invalid input", goto error);
2234
2235 return obj.v;
2236 error:
2237 obj.type->free(obj.v);
2238 return NULL;
2239 }
2240
2241 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2242 {
2243 struct isl_obj obj;
2244
2245 obj = obj_read(s);
2246 if (obj.type == isl_obj_set) {
2247 obj.type = isl_obj_union_set;
2248 obj.v = isl_union_set_from_set(obj.v);
2249 }
2250 if (obj.v)
2251 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2252
2253 return obj.v;
2254 error:
2255 obj.type->free(obj.v);
2256 return NULL;
2257 }
2258
2259 static __isl_give isl_basic_map *basic_map_read(struct isl_stream *s)
2260 {
2261 struct isl_obj obj;
2262 struct isl_map *map;
2263 struct isl_basic_map *bmap;
2264
2265 obj = obj_read(s);
2266 map = obj.v;
2267 if (!map)
2268 return NULL;
2269
2270 isl_assert(map->ctx, map->n <= 1, goto error);
2271
2272 if (map->n == 0)
2273 bmap = isl_basic_map_empty_like_map(map);
2274 else
2275 bmap = isl_basic_map_copy(map->p[0]);
2276
2277 isl_map_free(map);
2278
2279 return bmap;
2280 error:
2281 isl_map_free(map);
2282 return NULL;
2283 }
2284
2285 static __isl_give isl_basic_set *basic_set_read(struct isl_stream *s)
2286 {
2287 isl_basic_map *bmap;
2288 bmap = basic_map_read(s);
2289 if (!bmap)
2290 return NULL;
2291 if (!isl_basic_map_may_be_set(bmap))
2292 isl_die(s->ctx, isl_error_invalid,
2293 "input is not a set", goto error);
2294 return isl_basic_map_range(bmap);
2295 error:
2296 isl_basic_map_free(bmap);
2297 return NULL;
2298 }
2299
2300 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2301 FILE *input)
2302 {
2303 struct isl_basic_map *bmap;
2304 struct isl_stream *s = isl_stream_new_file(ctx, input);
2305 if (!s)
2306 return NULL;
2307 bmap = basic_map_read(s);
2308 isl_stream_free(s);
2309 return bmap;
2310 }
2311
2312 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2313 FILE *input)
2314 {
2315 isl_basic_set *bset;
2316 struct isl_stream *s = isl_stream_new_file(ctx, input);
2317 if (!s)
2318 return NULL;
2319 bset = basic_set_read(s);
2320 isl_stream_free(s);
2321 return bset;
2322 }
2323
2324 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2325 const char *str)
2326 {
2327 struct isl_basic_map *bmap;
2328 struct isl_stream *s = isl_stream_new_str(ctx, str);
2329 if (!s)
2330 return NULL;
2331 bmap = basic_map_read(s);
2332 isl_stream_free(s);
2333 return bmap;
2334 }
2335
2336 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2337 const char *str)
2338 {
2339 isl_basic_set *bset;
2340 struct isl_stream *s = isl_stream_new_str(ctx, str);
2341 if (!s)
2342 return NULL;
2343 bset = basic_set_read(s);
2344 isl_stream_free(s);
2345 return bset;
2346 }
2347
2348 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2349 FILE *input)
2350 {
2351 struct isl_map *map;
2352 struct isl_stream *s = isl_stream_new_file(ctx, input);
2353 if (!s)
2354 return NULL;
2355 map = isl_stream_read_map(s);
2356 isl_stream_free(s);
2357 return map;
2358 }
2359
2360 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2361 const char *str)
2362 {
2363 struct isl_map *map;
2364 struct isl_stream *s = isl_stream_new_str(ctx, str);
2365 if (!s)
2366 return NULL;
2367 map = isl_stream_read_map(s);
2368 isl_stream_free(s);
2369 return map;
2370 }
2371
2372 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2373 FILE *input)
2374 {
2375 isl_set *set;
2376 struct isl_stream *s = isl_stream_new_file(ctx, input);
2377 if (!s)
2378 return NULL;
2379 set = isl_stream_read_set(s);
2380 isl_stream_free(s);
2381 return set;
2382 }
2383
2384 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2385 const char *str)
2386 {
2387 isl_set *set;
2388 struct isl_stream *s = isl_stream_new_str(ctx, str);
2389 if (!s)
2390 return NULL;
2391 set = isl_stream_read_set(s);
2392 isl_stream_free(s);
2393 return set;
2394 }
2395
2396 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2397 FILE *input)
2398 {
2399 isl_union_map *umap;
2400 struct isl_stream *s = isl_stream_new_file(ctx, input);
2401 if (!s)
2402 return NULL;
2403 umap = isl_stream_read_union_map(s);
2404 isl_stream_free(s);
2405 return umap;
2406 }
2407
2408 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2409 const char *str)
2410 {
2411 isl_union_map *umap;
2412 struct isl_stream *s = isl_stream_new_str(ctx, str);
2413 if (!s)
2414 return NULL;
2415 umap = isl_stream_read_union_map(s);
2416 isl_stream_free(s);
2417 return umap;
2418 }
2419
2420 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2421 FILE *input)
2422 {
2423 isl_union_set *uset;
2424 struct isl_stream *s = isl_stream_new_file(ctx, input);
2425 if (!s)
2426 return NULL;
2427 uset = isl_stream_read_union_set(s);
2428 isl_stream_free(s);
2429 return uset;
2430 }
2431
2432 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2433 const char *str)
2434 {
2435 isl_union_set *uset;
2436 struct isl_stream *s = isl_stream_new_str(ctx, str);
2437 if (!s)
2438 return NULL;
2439 uset = isl_stream_read_union_set(s);
2440 isl_stream_free(s);
2441 return uset;
2442 }
2443
2444 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2445 {
2446 struct isl_vec *vec = NULL;
2447 struct isl_token *tok;
2448 unsigned size;
2449 int j;
2450
2451 tok = isl_stream_next_token(s);
2452 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2453 isl_stream_error(s, tok, "expecting vector length");
2454 goto error;
2455 }
2456
2457 size = isl_int_get_si(tok->u.v);
2458 isl_token_free(tok);
2459
2460 vec = isl_vec_alloc(s->ctx, size);
2461
2462 for (j = 0; j < size; ++j) {
2463 tok = isl_stream_next_token(s);
2464 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2465 isl_stream_error(s, tok, "expecting constant value");
2466 goto error;
2467 }
2468 isl_int_set(vec->el[j], tok->u.v);
2469 isl_token_free(tok);
2470 }
2471
2472 return vec;
2473 error:
2474 isl_token_free(tok);
2475 isl_vec_free(vec);
2476 return NULL;
2477 }
2478
2479 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2480 {
2481 return isl_vec_read_polylib(s);
2482 }
2483
2484 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2485 {
2486 isl_vec *v;
2487 struct isl_stream *s = isl_stream_new_file(ctx, input);
2488 if (!s)
2489 return NULL;
2490 v = vec_read(s);
2491 isl_stream_free(s);
2492 return v;
2493 }
2494
2495 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2496 struct isl_stream *s)
2497 {
2498 struct isl_obj obj;
2499
2500 obj = obj_read(s);
2501 if (obj.v)
2502 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2503 goto error);
2504
2505 return obj.v;
2506 error:
2507 obj.type->free(obj.v);
2508 return NULL;
2509 }
2510
2511 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2512 const char *str)
2513 {
2514 isl_pw_qpolynomial *pwqp;
2515 struct isl_stream *s = isl_stream_new_str(ctx, str);
2516 if (!s)
2517 return NULL;
2518 pwqp = isl_stream_read_pw_qpolynomial(s);
2519 isl_stream_free(s);
2520 return pwqp;
2521 }
2522
2523 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_file(isl_ctx *ctx,
2524 FILE *input)
2525 {
2526 isl_pw_qpolynomial *pwqp;
2527 struct isl_stream *s = isl_stream_new_file(ctx, input);
2528 if (!s)
2529 return NULL;
2530 pwqp = isl_stream_read_pw_qpolynomial(s);
2531 isl_stream_free(s);
2532 return pwqp;
2533 }
2534
2535 /* Is the next token an identifer not in "v"?
2536 */
2537 static int next_is_fresh_ident(struct isl_stream *s, struct vars *v)
2538 {
2539 int n = v->n;
2540 int fresh;
2541 struct isl_token *tok;
2542
2543 tok = isl_stream_next_token(s);
2544 if (!tok)
2545 return 0;
2546 fresh = tok->type == ISL_TOKEN_IDENT && vars_pos(v, tok->u.s, -1) >= n;
2547 isl_stream_push_token(s, tok);
2548
2549 vars_drop(v, v->n - n);
2550
2551 return fresh;
2552 }
2553
2554 /* First read the domain of the affine expression, which may be
2555 * a parameter space or a set.
2556 * The tricky part is that we don't know if the domain is a set or not,
2557 * so when we are trying to read the domain, we may actually be reading
2558 * the affine expression itself (defined on a parameter domains)
2559 * If the tuple we are reading is named, we assume it's the domain.
2560 * Also, if inside the tuple, the first thing we find is a nested tuple
2561 * or a new identifier, we again assume it's the domain.
2562 * Otherwise, we assume we are reading an affine expression.
2563 */
2564 static __isl_give isl_set *read_aff_domain(struct isl_stream *s,
2565 __isl_take isl_set *dom, struct vars *v)
2566 {
2567 struct isl_token *tok;
2568
2569 tok = isl_stream_next_token(s);
2570 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
2571 isl_stream_push_token(s, tok);
2572 return read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2573 }
2574 if (!tok || tok->type != '[') {
2575 isl_stream_error(s, tok, "expecting '['");
2576 goto error;
2577 }
2578 if (next_is_tuple(s) || next_is_fresh_ident(s, v)) {
2579 isl_stream_push_token(s, tok);
2580 dom = read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2581 } else
2582 isl_stream_push_token(s, tok);
2583
2584 return dom;
2585 error:
2586 if (tok)
2587 isl_stream_push_token(s, tok);
2588 isl_set_free(dom);
2589 return NULL;
2590 }
2591
2592 /* Read an affine expression from "s".
2593 */
2594 __isl_give isl_aff *isl_stream_read_aff(struct isl_stream *s)
2595 {
2596 isl_aff *aff;
2597 isl_multi_aff *ma;
2598
2599 ma = isl_stream_read_multi_aff(s);
2600 if (!ma)
2601 return NULL;
2602 if (isl_multi_aff_dim(ma, isl_dim_out) != 1)
2603 isl_die(s->ctx, isl_error_invalid,
2604 "expecting single affine expression",
2605 goto error);
2606
2607 aff = isl_multi_aff_get_aff(ma, 0);
2608 isl_multi_aff_free(ma);
2609 return aff;
2610 error:
2611 isl_multi_aff_free(ma);
2612 return NULL;
2613 }
2614
2615 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2616 */
2617 static __isl_give isl_pw_aff *read_pw_aff_with_dom(struct isl_stream *s,
2618 __isl_take isl_set *dom, struct vars *v)
2619 {
2620 isl_pw_aff *pwaff = NULL;
2621
2622 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2623 goto error;
2624
2625 if (isl_stream_eat(s, '['))
2626 goto error;
2627
2628 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2629
2630 if (isl_stream_eat(s, ']'))
2631 goto error;
2632
2633 dom = read_optional_disjuncts(s, dom, v, 0);
2634 pwaff = isl_pw_aff_intersect_domain(pwaff, dom);
2635
2636 return pwaff;
2637 error:
2638 isl_set_free(dom);
2639 isl_pw_aff_free(pwaff);
2640 return NULL;
2641 }
2642
2643 __isl_give isl_pw_aff *isl_stream_read_pw_aff(struct isl_stream *s)
2644 {
2645 struct vars *v;
2646 isl_set *dom = NULL;
2647 isl_set *aff_dom;
2648 isl_pw_aff *pa = NULL;
2649 int n;
2650
2651 v = vars_new(s->ctx);
2652 if (!v)
2653 return NULL;
2654
2655 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2656 if (next_is_tuple(s)) {
2657 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2658 if (isl_stream_eat(s, ISL_TOKEN_TO))
2659 goto error;
2660 }
2661 if (isl_stream_eat(s, '{'))
2662 goto error;
2663
2664 n = v->n;
2665 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2666 pa = read_pw_aff_with_dom(s, aff_dom, v);
2667 vars_drop(v, v->n - n);
2668
2669 while (isl_stream_eat_if_available(s, ';')) {
2670 isl_pw_aff *pa_i;
2671
2672 n = v->n;
2673 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2674 pa_i = read_pw_aff_with_dom(s, aff_dom, v);
2675 vars_drop(v, v->n - n);
2676
2677 pa = isl_pw_aff_union_add(pa, pa_i);
2678 }
2679
2680 if (isl_stream_eat(s, '}'))
2681 goto error;
2682
2683 vars_free(v);
2684 isl_set_free(dom);
2685 return pa;
2686 error:
2687 vars_free(v);
2688 isl_set_free(dom);
2689 isl_pw_aff_free(pa);
2690 return NULL;
2691 }
2692
2693 __isl_give isl_aff *isl_aff_read_from_str(isl_ctx *ctx, const char *str)
2694 {
2695 isl_aff *aff;
2696 struct isl_stream *s = isl_stream_new_str(ctx, str);
2697 if (!s)
2698 return NULL;
2699 aff = isl_stream_read_aff(s);
2700 isl_stream_free(s);
2701 return aff;
2702 }
2703
2704 __isl_give isl_pw_aff *isl_pw_aff_read_from_str(isl_ctx *ctx, const char *str)
2705 {
2706 isl_pw_aff *pa;
2707 struct isl_stream *s = isl_stream_new_str(ctx, str);
2708 if (!s)
2709 return NULL;
2710 pa = isl_stream_read_pw_aff(s);
2711 isl_stream_free(s);
2712 return pa;
2713 }
2714
2715 /* Read an isl_pw_multi_aff from "s".
2716 * We currently read a generic object and if it turns out to be a set or
2717 * a map, we convert that to an isl_pw_multi_aff.
2718 * It would be more efficient if we were to construct the isl_pw_multi_aff
2719 * directly.
2720 */
2721 __isl_give isl_pw_multi_aff *isl_stream_read_pw_multi_aff(struct isl_stream *s)
2722 {
2723 struct isl_obj obj;
2724
2725 obj = obj_read(s);
2726 if (!obj.v)
2727 return NULL;
2728
2729 if (obj.type == isl_obj_map)
2730 return isl_pw_multi_aff_from_map(obj.v);
2731 if (obj.type == isl_obj_set)
2732 return isl_pw_multi_aff_from_set(obj.v);
2733
2734 obj.type->free(obj.v);
2735 isl_die(s->ctx, isl_error_invalid, "unexpected object type",
2736 return NULL);
2737 }
2738
2739 __isl_give isl_pw_multi_aff *isl_pw_multi_aff_read_from_str(isl_ctx *ctx,
2740 const char *str)
2741 {
2742 isl_pw_multi_aff *pma;
2743 struct isl_stream *s = isl_stream_new_str(ctx, str);
2744 if (!s)
2745 return NULL;
2746 pma = isl_stream_read_pw_multi_aff(s);
2747 isl_stream_free(s);
2748 return pma;
2749 }
2750
2751 /* Assuming "pa" represents a single affine expression defined on a universe
2752 * domain, extract this affine expression.
2753 */
2754 static __isl_give isl_aff *aff_from_pw_aff(__isl_take isl_pw_aff *pa)
2755 {
2756 isl_aff *aff;
2757
2758 if (!pa)
2759 return NULL;
2760 if (pa->n != 1)
2761 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2762 "expecting single affine expression",
2763 goto error);
2764 if (!isl_set_plain_is_universe(pa->p[0].set))
2765 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2766 "expecting universe domain",
2767 goto error);
2768
2769 aff = isl_aff_copy(pa->p[0].aff);
2770 isl_pw_aff_free(pa);
2771 return aff;
2772 error:
2773 isl_pw_aff_free(pa);
2774 return NULL;
2775 }
2776
2777 /* Read a multi-affine expression from "s".
2778 * If the multi-affine expression has a domain, then then tuple
2779 * representing this domain cannot involve any affine expressions.
2780 * The tuple representing the actual expressions needs to consist
2781 * of only affine expressions. Moreover, these expressions can
2782 * only depend on parameters and input dimensions and not on other
2783 * output dimensions.
2784 */
2785 __isl_give isl_multi_aff *isl_stream_read_multi_aff(struct isl_stream *s)
2786 {
2787 struct vars *v;
2788 isl_set *dom = NULL;
2789 isl_multi_pw_aff *tuple = NULL;
2790 int dim, i, n;
2791 isl_space *space, *dom_space;
2792 isl_multi_aff *ma = NULL;
2793
2794 v = vars_new(s->ctx);
2795 if (!v)
2796 return NULL;
2797
2798 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2799 if (next_is_tuple(s)) {
2800 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2801 if (isl_stream_eat(s, ISL_TOKEN_TO))
2802 goto error;
2803 }
2804 if (!isl_set_plain_is_universe(dom))
2805 isl_die(s->ctx, isl_error_invalid,
2806 "expecting universe parameter domain", goto error);
2807 if (isl_stream_eat(s, '{'))
2808 goto error;
2809
2810 tuple = read_tuple(s, v, 0, 0);
2811 if (!tuple)
2812 goto error;
2813 if (isl_stream_eat_if_available(s, ISL_TOKEN_TO)) {
2814 isl_set *set;
2815 isl_space *space;
2816 int has_expr;
2817
2818 has_expr = tuple_has_expr(tuple);
2819 if (has_expr < 0)
2820 goto error;
2821 if (has_expr)
2822 isl_die(s->ctx, isl_error_invalid,
2823 "expecting universe domain", goto error);
2824 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2825 set = isl_set_universe(space);
2826 dom = isl_set_intersect_params(set, dom);
2827 isl_multi_pw_aff_free(tuple);
2828 tuple = read_tuple(s, v, 0, 0);
2829 if (!tuple)
2830 goto error;
2831 }
2832
2833 if (isl_stream_eat(s, '}'))
2834 goto error;
2835
2836 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
2837 dim = isl_set_dim(dom, isl_dim_all);
2838 dom_space = isl_set_get_space(dom);
2839 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2840 space = isl_space_align_params(space, isl_space_copy(dom_space));
2841 if (!isl_space_is_params(dom_space))
2842 space = isl_space_map_from_domain_and_range(
2843 isl_space_copy(dom_space), space);
2844 isl_space_free(dom_space);
2845 ma = isl_multi_aff_alloc(space);
2846
2847 for (i = 0; i < n; ++i) {
2848 isl_pw_aff *pa;
2849 isl_aff *aff;
2850 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
2851 aff = aff_from_pw_aff(pa);
2852 if (!aff)
2853 goto error;
2854 if (isl_aff_involves_dims(aff, isl_dim_in, dim, i + 1)) {
2855 isl_aff_free(aff);
2856 isl_die(s->ctx, isl_error_invalid,
2857 "not an affine expression", goto error);
2858 }
2859 aff = isl_aff_drop_dims(aff, isl_dim_in, dim, n);
2860 space = isl_multi_aff_get_domain_space(ma);
2861 aff = isl_aff_reset_domain_space(aff, space);
2862 ma = isl_multi_aff_set_aff(ma, i, aff);
2863 }
2864
2865 isl_multi_pw_aff_free(tuple);
2866 vars_free(v);
2867 isl_set_free(dom);
2868 return ma;
2869 error:
2870 isl_multi_pw_aff_free(tuple);
2871 vars_free(v);
2872 isl_set_free(dom);
2873 isl_multi_aff_free(ma);
2874 return NULL;
2875 }
2876
2877 __isl_give isl_multi_aff *isl_multi_aff_read_from_str(isl_ctx *ctx,
2878 const char *str)
2879 {
2880 isl_multi_aff *maff;
2881 struct isl_stream *s = isl_stream_new_str(ctx, str);
2882 if (!s)
2883 return NULL;
2884 maff = isl_stream_read_multi_aff(s);
2885 isl_stream_free(s);
2886 return maff;
2887 }
2888
2889 __isl_give isl_union_pw_qpolynomial *isl_stream_read_union_pw_qpolynomial(
2890 struct isl_stream *s)
2891 {
2892 struct isl_obj obj;
2893
2894 obj = obj_read(s);
2895 if (obj.type == isl_obj_pw_qpolynomial) {
2896 obj.type = isl_obj_union_pw_qpolynomial;
2897 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
2898 }
2899 if (obj.v)
2900 isl_assert(s->ctx, obj.type == isl_obj_union_pw_qpolynomial,
2901 goto error);
2902
2903 return obj.v;
2904 error:
2905 obj.type->free(obj.v);
2906 return NULL;
2907 }
2908
2909 __isl_give isl_union_pw_qpolynomial *isl_union_pw_qpolynomial_read_from_str(
2910 isl_ctx *ctx, const char *str)
2911 {
2912 isl_union_pw_qpolynomial *upwqp;
2913 struct isl_stream *s = isl_stream_new_str(ctx, str);
2914 if (!s)
2915 return NULL;
2916 upwqp = isl_stream_read_union_pw_qpolynomial(s);
2917 isl_stream_free(s);
2918 return upwqp;
2919 }
Integer set library