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Merge branch 'maint'
[isl.git] / isl_input.c
blobb032bf13c652fb6569c67439ddb494ba996ccc3d
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 isl_stream_error(s, tok, "unknown identifier");
347 goto error;
348 }
349
350 aff = isl_aff_zero_on_domain(isl_local_space_from_space(isl_space_copy(dim)));
351 if (!aff)
352 goto error;
353 isl_int_set_si(aff->v->el[2 + pos], 1);
354 res = isl_pw_aff_from_aff(aff);
355 isl_token_free(tok);
356 } else if (tok->type == ISL_TOKEN_VALUE) {
357 if (isl_stream_eat_if_available(s, '*')) {
358 res = accept_affine_factor(s, isl_space_copy(dim), v);
359 res = isl_pw_aff_scale(res, tok->u.v);
360 } else {
361 isl_local_space *ls;
362 isl_aff *aff;
363 ls = isl_local_space_from_space(isl_space_copy(dim));
364 aff = isl_aff_zero_on_domain(ls);
365 aff = isl_aff_add_constant(aff, tok->u.v);
366 res = isl_pw_aff_from_aff(aff);
367 }
368 isl_token_free(tok);
369 } else if (tok->type == '(') {
370 isl_token_free(tok);
371 tok = NULL;
372 res = accept_affine(s, isl_space_copy(dim), v);
373 if (!res)
374 goto error;
375 if (isl_stream_eat(s, ')'))
376 goto error;
377 } else if (tok->type == '[' ||
378 tok->type == ISL_TOKEN_FLOORD ||
379 tok->type == ISL_TOKEN_CEILD) {
380 isl_stream_push_token(s, tok);
381 tok = NULL;
382 res = accept_div(s, isl_space_copy(dim), v);
383 } else if (tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX) {
384 isl_stream_push_token(s, tok);
385 tok = NULL;
386 res = accept_minmax(s, isl_space_copy(dim), v);
387 } else {
388 isl_stream_error(s, tok, "expecting factor");
389 goto error;
390 }
391 if (isl_stream_eat_if_available(s, '%') ||
392 isl_stream_eat_if_available(s, ISL_TOKEN_MOD)) {
393 isl_space_free(dim);
394 return affine_mod(s, v, res);
395 }
396 if (isl_stream_eat_if_available(s, '*')) {
397 isl_int f;
398 isl_int_init(f);
399 isl_int_set_si(f, 1);
400 if (accept_cst_factor(s, &f) < 0) {
401 isl_int_clear(f);
402 goto error2;
403 }
404 res = isl_pw_aff_scale(res, f);
405 isl_int_clear(f);
406 }
407 if (isl_stream_eat_if_available(s, '/')) {
408 isl_int f;
409 isl_int_init(f);
410 isl_int_set_si(f, 1);
411 if (accept_cst_factor(s, &f) < 0) {
412 isl_int_clear(f);
413 goto error2;
414 }
415 res = isl_pw_aff_scale_down(res, f);
416 isl_int_clear(f);
417 }
418
419 isl_space_free(dim);
420 return res;
421 error:
422 isl_token_free(tok);
423 error2:
424 isl_pw_aff_free(res);
425 isl_space_free(dim);
426 return NULL;
427 }
428
429 static __isl_give isl_pw_aff *add_cst(__isl_take isl_pw_aff *pwaff, isl_int v)
430 {
431 isl_aff *aff;
432 isl_space *space;
433
434 space = isl_pw_aff_get_domain_space(pwaff);
435 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
436 aff = isl_aff_add_constant(aff, v);
437
438 return isl_pw_aff_add(pwaff, isl_pw_aff_from_aff(aff));
439 }
440
441 static __isl_give isl_pw_aff *accept_affine(struct isl_stream *s,
442 __isl_take isl_space *dim, struct vars *v)
443 {
444 struct isl_token *tok = NULL;
445 isl_local_space *ls;
446 isl_pw_aff *res;
447 int sign = 1;
448
449 ls = isl_local_space_from_space(isl_space_copy(dim));
450 res = isl_pw_aff_from_aff(isl_aff_zero_on_domain(ls));
451 if (!res)
452 goto error;
453
454 for (;;) {
455 tok = next_token(s);
456 if (!tok) {
457 isl_stream_error(s, NULL, "unexpected EOF");
458 goto error;
459 }
460 if (tok->type == '-') {
461 sign = -sign;
462 isl_token_free(tok);
463 continue;
464 }
465 if (tok->type == '(' || tok->type == '[' ||
466 tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX ||
467 tok->type == ISL_TOKEN_FLOORD ||
468 tok->type == ISL_TOKEN_CEILD ||
469 tok->type == ISL_TOKEN_IDENT ||
470 tok->type == ISL_TOKEN_AFF) {
471 isl_pw_aff *term;
472 isl_stream_push_token(s, tok);
473 tok = NULL;
474 term = accept_affine_factor(s, isl_space_copy(dim), v);
475 if (sign < 0)
476 res = isl_pw_aff_sub(res, term);
477 else
478 res = isl_pw_aff_add(res, term);
479 if (!res)
480 goto error;
481 sign = 1;
482 } else if (tok->type == ISL_TOKEN_VALUE) {
483 if (sign < 0)
484 isl_int_neg(tok->u.v, tok->u.v);
485 if (isl_stream_eat_if_available(s, '*') ||
486 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
487 isl_pw_aff *term;
488 term = accept_affine_factor(s,
489 isl_space_copy(dim), v);
490 term = isl_pw_aff_scale(term, tok->u.v);
491 res = isl_pw_aff_add(res, term);
492 if (!res)
493 goto error;
494 } else {
495 res = add_cst(res, tok->u.v);
496 }
497 sign = 1;
498 } else {
499 isl_stream_error(s, tok, "unexpected isl_token");
500 isl_stream_push_token(s, tok);
501 isl_pw_aff_free(res);
502 isl_space_free(dim);
503 return NULL;
504 }
505 isl_token_free(tok);
506
507 tok = next_token(s);
508 if (tok && tok->type == '-') {
509 sign = -sign;
510 isl_token_free(tok);
511 } else if (tok && tok->type == '+') {
512 /* nothing */
513 isl_token_free(tok);
514 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
515 isl_int_is_neg(tok->u.v)) {
516 isl_stream_push_token(s, tok);
517 } else {
518 if (tok)
519 isl_stream_push_token(s, tok);
520 break;
521 }
522 }
523
524 isl_space_free(dim);
525 return res;
526 error:
527 isl_space_free(dim);
528 isl_token_free(tok);
529 isl_pw_aff_free(res);
530 return NULL;
531 }
532
533 static int is_comparator(struct isl_token *tok)
534 {
535 if (!tok)
536 return 0;
537
538 switch (tok->type) {
539 case ISL_TOKEN_LT:
540 case ISL_TOKEN_GT:
541 case ISL_TOKEN_LE:
542 case ISL_TOKEN_GE:
543 case ISL_TOKEN_NE:
544 case '=':
545 return 1;
546 default:
547 return 0;
548 }
549 }
550
551 static struct isl_map *read_disjuncts(struct isl_stream *s,
552 struct vars *v, __isl_take isl_map *map, int rational);
553 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
554 __isl_take isl_space *dim, struct vars *v, int rational);
555
556 /* Accept a ternary operator, given the first argument.
557 */
558 static __isl_give isl_pw_aff *accept_ternary(struct isl_stream *s,
559 __isl_take isl_map *cond, struct vars *v, int rational)
560 {
561 isl_space *dim;
562 isl_pw_aff *pwaff1 = NULL, *pwaff2 = NULL, *pa_cond;
563
564 if (!cond)
565 return NULL;
566
567 if (isl_stream_eat(s, '?'))
568 goto error;
569
570 dim = isl_space_wrap(isl_map_get_space(cond));
571 pwaff1 = accept_extended_affine(s, dim, v, rational);
572 if (!pwaff1)
573 goto error;
574
575 if (isl_stream_eat(s, ':'))
576 goto error;
577
578 dim = isl_pw_aff_get_domain_space(pwaff1);
579 pwaff2 = accept_extended_affine(s, dim, v, rational);
580 if (!pwaff1)
581 goto error;
582
583 pa_cond = isl_set_indicator_function(isl_map_wrap(cond));
584 return isl_pw_aff_cond(pa_cond, pwaff1, pwaff2);
585 error:
586 isl_map_free(cond);
587 isl_pw_aff_free(pwaff1);
588 isl_pw_aff_free(pwaff2);
589 return NULL;
590 }
591
592 /* Accept an affine expression that may involve ternary operators.
593 * We first read an affine expression.
594 * If it is not followed by a comparison operator, we simply return it.
595 * Otherwise, we assume the affine epxression is part of the first
596 * argument of a ternary operator and try to parse that.
597 */
598 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
599 __isl_take isl_space *dim, struct vars *v, int rational)
600 {
601 isl_space *space;
602 isl_map *cond;
603 isl_pw_aff *pwaff;
604 struct isl_token *tok;
605 int line = -1, col = -1;
606 int is_comp;
607
608 tok = isl_stream_next_token(s);
609 if (tok) {
610 line = tok->line;
611 col = tok->col;
612 isl_stream_push_token(s, tok);
613 }
614
615 pwaff = accept_affine(s, dim, v);
616 if (rational)
617 pwaff = isl_pw_aff_set_rational(pwaff);
618 if (!pwaff)
619 return NULL;
620
621 tok = isl_stream_next_token(s);
622 if (!tok)
623 return isl_pw_aff_free(pwaff);
624
625 is_comp = is_comparator(tok);
626 isl_stream_push_token(s, tok);
627 if (!is_comp)
628 return pwaff;
629
630 tok = isl_token_new(s->ctx, line, col, 0);
631 if (!tok)
632 return isl_pw_aff_free(pwaff);
633 tok->type = ISL_TOKEN_AFF;
634 tok->u.pwaff = pwaff;
635
636 space = isl_pw_aff_get_domain_space(pwaff);
637 cond = isl_map_universe(isl_space_unwrap(space));
638
639 isl_stream_push_token(s, tok);
640
641 cond = read_disjuncts(s, v, cond, rational);
642
643 return accept_ternary(s, cond, v, rational);
644 }
645
646 static __isl_give isl_map *read_var_def(struct isl_stream *s,
647 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v,
648 int rational)
649 {
650 isl_pw_aff *def;
651 int pos;
652 isl_map *def_map;
653
654 if (type == isl_dim_param)
655 pos = isl_map_dim(map, isl_dim_param);
656 else {
657 pos = isl_map_dim(map, isl_dim_in);
658 if (type == isl_dim_out)
659 pos += isl_map_dim(map, isl_dim_out);
660 type = isl_dim_in;
661 }
662 --pos;
663
664 def = accept_extended_affine(s, isl_space_wrap(isl_map_get_space(map)),
665 v, rational);
666 def_map = isl_map_from_pw_aff(def);
667 def_map = isl_map_equate(def_map, type, pos, isl_dim_out, 0);
668 def_map = isl_set_unwrap(isl_map_domain(def_map));
669
670 map = isl_map_intersect(map, def_map);
671
672 return map;
673 }
674
675 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
676 __isl_take isl_space *dim, struct vars *v)
677 {
678 isl_pw_aff *pwaff;
679 isl_pw_aff_list *list;
680 struct isl_token *tok = NULL;
681
682 pwaff = accept_affine(s, isl_space_copy(dim), v);
683 list = isl_pw_aff_list_from_pw_aff(pwaff);
684 if (!list)
685 goto error;
686
687 for (;;) {
688 tok = isl_stream_next_token(s);
689 if (!tok) {
690 isl_stream_error(s, NULL, "unexpected EOF");
691 goto error;
692 }
693 if (tok->type != ',') {
694 isl_stream_push_token(s, tok);
695 break;
696 }
697 isl_token_free(tok);
698
699 pwaff = accept_affine(s, isl_space_copy(dim), v);
700 list = isl_pw_aff_list_concat(list,
701 isl_pw_aff_list_from_pw_aff(pwaff));
702 if (!list)
703 goto error;
704 }
705
706 isl_space_free(dim);
707 return list;
708 error:
709 isl_space_free(dim);
710 isl_pw_aff_list_free(list);
711 return NULL;
712 }
713
714 static __isl_give isl_map *read_defined_var_list(struct isl_stream *s,
715 struct vars *v, __isl_take isl_map *map, int rational)
716 {
717 struct isl_token *tok;
718
719 while ((tok = isl_stream_next_token(s)) != NULL) {
720 int p;
721 int n = v->n;
722
723 if (tok->type != ISL_TOKEN_IDENT)
724 break;
725
726 p = vars_pos(v, tok->u.s, -1);
727 if (p < 0)
728 goto error;
729 if (p < n) {
730 isl_stream_error(s, tok, "expecting unique identifier");
731 goto error;
732 }
733
734 map = isl_map_add_dims(map, isl_dim_out, 1);
735
736 isl_token_free(tok);
737 tok = isl_stream_next_token(s);
738 if (tok && tok->type == '=') {
739 isl_token_free(tok);
740 map = read_var_def(s, map, isl_dim_out, v, rational);
741 tok = isl_stream_next_token(s);
742 }
743
744 if (!tok || tok->type != ',')
745 break;
746
747 isl_token_free(tok);
748 }
749 if (tok)
750 isl_stream_push_token(s, tok);
751
752 return map;
753 error:
754 isl_token_free(tok);
755 isl_map_free(map);
756 return NULL;
757 }
758
759 static int next_is_tuple(struct isl_stream *s)
760 {
761 struct isl_token *tok;
762 int is_tuple;
763
764 tok = isl_stream_next_token(s);
765 if (!tok)
766 return 0;
767 if (tok->type == '[') {
768 isl_stream_push_token(s, tok);
769 return 1;
770 }
771 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
772 isl_stream_push_token(s, tok);
773 return 0;
774 }
775
776 is_tuple = isl_stream_next_token_is(s, '[');
777
778 isl_stream_push_token(s, tok);
779
780 return is_tuple;
781 }
782
783 /* Allocate an initial tuple with zero dimensions and an anonymous,
784 * unstructured space.
785 * A tuple is represented as an isl_multi_pw_aff.
786 * The range space is the space of the tuple.
787 * The domain space is an anonymous space
788 * with a dimension for each variable in the set of variables in "v".
789 * If a given dimension is not defined in terms of earlier dimensions in
790 * the input, then the corresponding isl_pw_aff is set equal to one time
791 * the variable corresponding to the dimension being defined.
792 */
793 static __isl_give isl_multi_pw_aff *tuple_alloc(struct vars *v)
794 {
795 return isl_multi_pw_aff_alloc(isl_space_alloc(v->ctx, 0, v->n, 0));
796 }
797
798 /* Is "pa" an expression in term of earlier dimensions?
799 * The alternative is that the dimension is defined to be equal to itself,
800 * meaning that it has a universe domain and an expression that depends
801 * on itself. "i" is the position of the expression in a sequence
802 * of "n" expressions. The final dimensions of "pa" correspond to
803 * these "n" expressions.
804 */
805 static int pw_aff_is_expr(__isl_keep isl_pw_aff *pa, int i, int n)
806 {
807 isl_aff *aff;
808
809 if (!pa)
810 return -1;
811 if (pa->n != 1)
812 return 1;
813 if (!isl_set_plain_is_universe(pa->p[0].set))
814 return 1;
815
816 aff = pa->p[0].aff;
817 if (isl_int_is_zero(aff->v->el[aff->v->size - n + i]))
818 return 1;
819 return 0;
820 }
821
822 /* Does the tuple contain any dimensions that are defined
823 * in terms of earlier dimensions?
824 */
825 static int tuple_has_expr(__isl_keep isl_multi_pw_aff *tuple)
826 {
827 int i, n;
828 int has_expr = 0;
829 isl_pw_aff *pa;
830
831 if (!tuple)
832 return -1;
833 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
834 for (i = 0; i < n; ++i) {
835 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
836 has_expr = pw_aff_is_expr(pa, i, n);
837 isl_pw_aff_free(pa);
838 if (has_expr < 0 || has_expr)
839 break;
840 }
841
842 return has_expr;
843 }
844
845 /* Add a dimension to the given tuple.
846 * The dimension is initially undefined, so it is encoded
847 * as one times itself.
848 */
849 static __isl_give isl_multi_pw_aff *tuple_add_dim(
850 __isl_take isl_multi_pw_aff *tuple, struct vars *v)
851 {
852 isl_space *space;
853 isl_aff *aff;
854 isl_pw_aff *pa;
855
856 tuple = isl_multi_pw_aff_add_dims(tuple, isl_dim_in, 1);
857 space = isl_multi_pw_aff_get_domain_space(tuple);
858 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
859 aff = isl_aff_add_coefficient_si(aff, isl_dim_in, v->n, 1);
860 pa = isl_pw_aff_from_aff(aff);
861 tuple = isl_multi_pw_aff_flat_range_product(tuple,
862 isl_multi_pw_aff_from_pw_aff(pa));
863
864 return tuple;
865 }
866
867 /* Set the name of dimension "pos" in "tuple" to "name".
868 * During printing, we add primes if the same name appears more than once
869 * to distinguish the occurrences. Here, we remove those primes from "name"
870 * before setting the name of the dimension.
871 */
872 static __isl_give isl_multi_pw_aff *tuple_set_dim_name(
873 __isl_take isl_multi_pw_aff *tuple, int pos, char *name)
874 {
875 char *prime;
876
877 if (!name)
878 return tuple;
879
880 prime = strchr(name, '\'');
881 if (prime)
882 *prime = '\0';
883 tuple = isl_multi_pw_aff_set_dim_name(tuple, isl_dim_set, pos, name);
884 if (prime)
885 *prime = '\'';
886
887 return tuple;
888 }
889
890 /* Read an affine expression from "s" and replace the definition
891 * of dimension "pos" in "tuple" by this expression.
892 *
893 * accept_extended_affine requires a wrapped space as input.
894 * The domain space of "tuple", on the other hand is an anonymous space,
895 * so we have to adjust the space of the isl_pw_aff before adding it
896 * to "tuple".
897 */
898 static __isl_give isl_multi_pw_aff *read_tuple_var_def(struct isl_stream *s,
899 __isl_take isl_multi_pw_aff *tuple, int pos, struct vars *v,
900 int rational)
901 {
902 isl_space *space;
903 isl_pw_aff *def;
904
905 space = isl_space_wrap(isl_space_alloc(s->ctx, 0, v->n, 0));
906 def = accept_extended_affine(s, space, v, rational);
907 space = isl_space_set_alloc(s->ctx, 0, v->n);
908 def = isl_pw_aff_reset_domain_space(def, space);
909 tuple = isl_multi_pw_aff_set_pw_aff(tuple, pos, def);
910
911 return tuple;
912 }
913
914 /* Read a list of variables and/or affine expressions and return the list
915 * as an isl_multi_pw_aff.
916 * The elements in the list are separated by either "," or "][".
917 * If "comma" is set then only "," is allowed.
918 */
919 static __isl_give isl_multi_pw_aff *read_tuple_var_list(struct isl_stream *s,
920 struct vars *v, int rational, int comma)
921 {
922 int i = 0;
923 struct isl_token *tok;
924 isl_multi_pw_aff *res;
925
926 res = tuple_alloc(v);
927
928 if (isl_stream_next_token_is(s, ']'))
929 return res;
930
931 while ((tok = next_token(s)) != NULL) {
932 int new_name = 0;
933
934 res = tuple_add_dim(res, v);
935
936 if (tok->type == ISL_TOKEN_IDENT) {
937 int n = v->n;
938 int p = vars_pos(v, tok->u.s, -1);
939 if (p < 0)
940 goto error;
941 new_name = p >= n;
942 }
943
944 if (tok->type == '*') {
945 if (vars_add_anon(v) < 0)
946 goto error;
947 isl_token_free(tok);
948 } else if (new_name) {
949 res = tuple_set_dim_name(res, i, v->v->name);
950 isl_token_free(tok);
951 if (isl_stream_eat_if_available(s, '='))
952 res = read_tuple_var_def(s, res, i, v,
953 rational);
954 } else {
955 isl_stream_push_token(s, tok);
956 tok = NULL;
957 if (vars_add_anon(v) < 0)
958 goto error;
959 res = read_tuple_var_def(s, res, i, v, rational);
960 }
961
962 tok = isl_stream_next_token(s);
963 if (!comma && tok && tok->type == ']' &&
964 isl_stream_next_token_is(s, '[')) {
965 isl_token_free(tok);
966 tok = isl_stream_next_token(s);
967 } else if (!tok || tok->type != ',')
968 break;
969
970 isl_token_free(tok);
971 i++;
972 }
973 if (tok)
974 isl_stream_push_token(s, tok);
975
976 return res;
977 error:
978 isl_token_free(tok);
979 return isl_multi_pw_aff_free(res);
980 }
981
982 /* Read a tuple and represent it as an isl_multi_pw_aff. See tuple_alloc.
983 */
984 static __isl_give isl_multi_pw_aff *read_tuple(struct isl_stream *s,
985 struct vars *v, int rational, int comma)
986 {
987 struct isl_token *tok;
988 char *name = NULL;
989 isl_multi_pw_aff *res = NULL;
990
991 tok = isl_stream_next_token(s);
992 if (!tok)
993 goto error;
994 if (tok->type == ISL_TOKEN_IDENT || tok->is_keyword) {
995 name = strdup(tok->u.s);
996 isl_token_free(tok);
997 if (!name)
998 goto error;
999 } else
1000 isl_stream_push_token(s, tok);
1001 if (isl_stream_eat(s, '['))
1002 goto error;
1003 if (next_is_tuple(s)) {
1004 isl_multi_pw_aff *out;
1005 int n;
1006 res = read_tuple(s, v, rational, comma);
1007 if (isl_stream_eat(s, ISL_TOKEN_TO))
1008 goto error;
1009 out = read_tuple(s, v, rational, comma);
1010 n = isl_multi_pw_aff_dim(out, isl_dim_out);
1011 res = isl_multi_pw_aff_add_dims(res, isl_dim_in, n);
1012 res = isl_multi_pw_aff_range_product(res, out);
1013 } else
1014 res = read_tuple_var_list(s, v, rational, comma);
1015 if (isl_stream_eat(s, ']'))
1016 goto error;
1017
1018 if (name) {
1019 res = isl_multi_pw_aff_set_tuple_name(res, isl_dim_out, name);
1020 free(name);
1021 }
1022
1023 return res;
1024 error:
1025 free(name);
1026 return isl_multi_pw_aff_free(res);
1027 }
1028
1029 /* Read a tuple from "s" and add it to "map".
1030 * The tuple is initially represented as an isl_multi_pw_aff.
1031 * We first create the appropriate space in "map" based on the range
1032 * space of this isl_multi_pw_aff. Then, we add equalities based
1033 * on the affine expressions. These live in an anonymous space,
1034 * however, so we first need to reset the space to that of "map".
1035 */
1036 static __isl_give isl_map *read_map_tuple(struct isl_stream *s,
1037 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v,
1038 int rational, int comma)
1039 {
1040 int i, n;
1041 isl_multi_pw_aff *tuple;
1042 isl_space *space = NULL;
1043
1044 tuple = read_tuple(s, v, rational, comma);
1045 if (!tuple)
1046 goto error;
1047
1048 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
1049 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
1050 if (!space)
1051 goto error;
1052
1053 if (type == isl_dim_param) {
1054 if (isl_space_has_tuple_name(space, isl_dim_set) ||
1055 isl_space_is_wrapping(space)) {
1056 isl_die(s->ctx, isl_error_invalid,
1057 "parameter tuples cannot be named or nested",
1058 goto error);
1059 }
1060 map = isl_map_add_dims(map, type, n);
1061 for (i = 0; i < n; ++i) {
1062 isl_id *id;
1063 if (!isl_space_has_dim_name(space, isl_dim_set, i))
1064 isl_die(s->ctx, isl_error_invalid,
1065 "parameters must be named",
1066 goto error);
1067 id = isl_space_get_dim_id(space, isl_dim_set, i);
1068 map = isl_map_set_dim_id(map, isl_dim_param, i, id);
1069 }
1070 } else if (type == isl_dim_in) {
1071 isl_set *set;
1072
1073 set = isl_set_universe(isl_space_copy(space));
1074 if (rational)
1075 set = isl_set_set_rational(set);
1076 set = isl_set_intersect_params(set, isl_map_params(map));
1077 map = isl_map_from_domain(set);
1078 } else {
1079 isl_set *set;
1080
1081 set = isl_set_universe(isl_space_copy(space));
1082 if (rational)
1083 set = isl_set_set_rational(set);
1084 map = isl_map_from_domain_and_range(isl_map_domain(map), set);
1085 }
1086
1087 for (i = 0; i < n; ++i) {
1088 isl_pw_aff *pa;
1089 isl_space *space;
1090 isl_aff *aff;
1091 isl_set *set;
1092 isl_map *map_i;
1093
1094 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
1095 space = isl_pw_aff_get_domain_space(pa);
1096 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
1097 aff = isl_aff_add_coefficient_si(aff,
1098 isl_dim_in, v->n - n + i, -1);
1099 pa = isl_pw_aff_add(pa, isl_pw_aff_from_aff(aff));
1100 if (rational)
1101 pa = isl_pw_aff_set_rational(pa);
1102 set = isl_pw_aff_zero_set(pa);
1103 map_i = isl_map_from_range(set);
1104 map_i = isl_map_reset_space(map_i, isl_map_get_space(map));
1105 map = isl_map_intersect(map, map_i);
1106 }
1107
1108 isl_space_free(space);
1109 isl_multi_pw_aff_free(tuple);
1110 return map;
1111 error:
1112 isl_space_free(space);
1113 isl_multi_pw_aff_free(tuple);
1114 isl_map_free(map);
1115 return NULL;
1116 }
1117
1118 static __isl_give isl_set *construct_constraints(
1119 __isl_take isl_set *set, int type,
1120 __isl_keep isl_pw_aff_list *left, __isl_keep isl_pw_aff_list *right,
1121 int rational)
1122 {
1123 isl_set *cond;
1124
1125 left = isl_pw_aff_list_copy(left);
1126 right = isl_pw_aff_list_copy(right);
1127 if (rational) {
1128 left = isl_pw_aff_list_set_rational(left);
1129 right = isl_pw_aff_list_set_rational(right);
1130 }
1131 if (type == ISL_TOKEN_LE)
1132 cond = isl_pw_aff_list_le_set(left, right);
1133 else if (type == ISL_TOKEN_GE)
1134 cond = isl_pw_aff_list_ge_set(left, right);
1135 else if (type == ISL_TOKEN_LT)
1136 cond = isl_pw_aff_list_lt_set(left, right);
1137 else if (type == ISL_TOKEN_GT)
1138 cond = isl_pw_aff_list_gt_set(left, right);
1139 else if (type == ISL_TOKEN_NE)
1140 cond = isl_pw_aff_list_ne_set(left, right);
1141 else
1142 cond = isl_pw_aff_list_eq_set(left, right);
1143
1144 return isl_set_intersect(set, cond);
1145 }
1146
1147 static __isl_give isl_map *add_constraint(struct isl_stream *s,
1148 struct vars *v, __isl_take isl_map *map, int rational)
1149 {
1150 struct isl_token *tok = NULL;
1151 isl_pw_aff_list *list1 = NULL, *list2 = NULL;
1152 isl_set *set;
1153
1154 set = isl_map_wrap(map);
1155 list1 = accept_affine_list(s, isl_set_get_space(set), v);
1156 if (!list1)
1157 goto error;
1158 tok = isl_stream_next_token(s);
1159 if (!is_comparator(tok)) {
1160 isl_stream_error(s, tok, "missing operator");
1161 if (tok)
1162 isl_stream_push_token(s, tok);
1163 tok = NULL;
1164 goto error;
1165 }
1166 for (;;) {
1167 list2 = accept_affine_list(s, isl_set_get_space(set), v);
1168 if (!list2)
1169 goto error;
1170
1171 set = construct_constraints(set, tok->type, list1, list2,
1172 rational);
1173 isl_token_free(tok);
1174 isl_pw_aff_list_free(list1);
1175 list1 = list2;
1176
1177 tok = isl_stream_next_token(s);
1178 if (!is_comparator(tok)) {
1179 if (tok)
1180 isl_stream_push_token(s, tok);
1181 break;
1182 }
1183 }
1184 isl_pw_aff_list_free(list1);
1185
1186 return isl_set_unwrap(set);
1187 error:
1188 if (tok)
1189 isl_token_free(tok);
1190 isl_pw_aff_list_free(list1);
1191 isl_pw_aff_list_free(list2);
1192 isl_set_free(set);
1193 return NULL;
1194 }
1195
1196 static __isl_give isl_map *read_exists(struct isl_stream *s,
1197 struct vars *v, __isl_take isl_map *map, int rational)
1198 {
1199 int n = v->n;
1200 int seen_paren = isl_stream_eat_if_available(s, '(');
1201
1202 map = isl_map_from_domain(isl_map_wrap(map));
1203 map = read_defined_var_list(s, v, map, rational);
1204
1205 if (isl_stream_eat(s, ':'))
1206 goto error;
1207
1208 map = read_disjuncts(s, v, map, rational);
1209 map = isl_set_unwrap(isl_map_domain(map));
1210
1211 vars_drop(v, v->n - n);
1212 if (seen_paren && isl_stream_eat(s, ')'))
1213 goto error;
1214
1215 return map;
1216 error:
1217 isl_map_free(map);
1218 return NULL;
1219 }
1220
1221 /* Parse an expression between parentheses and push the result
1222 * back on the stream.
1223 *
1224 * The parsed expression may be either an affine expression
1225 * or a condition. The first type is pushed onto the stream
1226 * as an isl_pw_aff, while the second is pushed as an isl_map.
1227 *
1228 * If the initial token indicates the start of a condition,
1229 * we parse it as such.
1230 * Otherwise, we first parse an affine expression and push
1231 * that onto the stream. If the affine expression covers the
1232 * entire expression between parentheses, we return.
1233 * Otherwise, we assume that the affine expression is the
1234 * start of a condition and continue parsing.
1235 */
1236 static int resolve_paren_expr(struct isl_stream *s,
1237 struct vars *v, __isl_take isl_map *map, int rational)
1238 {
1239 struct isl_token *tok, *tok2;
1240 int line, col;
1241 isl_pw_aff *pwaff;
1242
1243 tok = isl_stream_next_token(s);
1244 if (!tok || tok->type != '(')
1245 goto error;
1246
1247 if (isl_stream_next_token_is(s, '('))
1248 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1249 goto error;
1250
1251 if (isl_stream_next_token_is(s, ISL_TOKEN_EXISTS) ||
1252 isl_stream_next_token_is(s, ISL_TOKEN_NOT) ||
1253 isl_stream_next_token_is(s, ISL_TOKEN_TRUE) ||
1254 isl_stream_next_token_is(s, ISL_TOKEN_FALSE) ||
1255 isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1256 map = read_disjuncts(s, v, map, rational);
1257 if (isl_stream_eat(s, ')'))
1258 goto error;
1259 tok->type = ISL_TOKEN_MAP;
1260 tok->u.map = map;
1261 isl_stream_push_token(s, tok);
1262 return 0;
1263 }
1264
1265 tok2 = isl_stream_next_token(s);
1266 if (!tok2)
1267 goto error;
1268 line = tok2->line;
1269 col = tok2->col;
1270 isl_stream_push_token(s, tok2);
1271
1272 pwaff = accept_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
1273 if (!pwaff)
1274 goto error;
1275
1276 tok2 = isl_token_new(s->ctx, line, col, 0);
1277 if (!tok2)
1278 goto error2;
1279 tok2->type = ISL_TOKEN_AFF;
1280 tok2->u.pwaff = pwaff;
1281
1282 if (isl_stream_eat_if_available(s, ')')) {
1283 isl_stream_push_token(s, tok2);
1284 isl_token_free(tok);
1285 isl_map_free(map);
1286 return 0;
1287 }
1288
1289 isl_stream_push_token(s, tok2);
1290
1291 map = read_disjuncts(s, v, map, rational);
1292 if (isl_stream_eat(s, ')'))
1293 goto error;
1294
1295 tok->type = ISL_TOKEN_MAP;
1296 tok->u.map = map;
1297 isl_stream_push_token(s, tok);
1298
1299 return 0;
1300 error2:
1301 isl_pw_aff_free(pwaff);
1302 error:
1303 isl_token_free(tok);
1304 isl_map_free(map);
1305 return -1;
1306 }
1307
1308 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1309 struct vars *v, __isl_take isl_map *map, int rational)
1310 {
1311 if (isl_stream_next_token_is(s, '('))
1312 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1313 goto error;
1314
1315 if (isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1316 struct isl_token *tok;
1317 tok = isl_stream_next_token(s);
1318 if (!tok)
1319 goto error;
1320 isl_map_free(map);
1321 map = isl_map_copy(tok->u.map);
1322 isl_token_free(tok);
1323 return map;
1324 }
1325
1326 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1327 return read_exists(s, v, map, rational);
1328
1329 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1330 return map;
1331
1332 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1333 isl_space *dim = isl_map_get_space(map);
1334 isl_map_free(map);
1335 return isl_map_empty(dim);
1336 }
1337
1338 return add_constraint(s, v, map, rational);
1339 error:
1340 isl_map_free(map);
1341 return NULL;
1342 }
1343
1344 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1345 struct vars *v, __isl_take isl_map *map, int rational)
1346 {
1347 isl_map *res;
1348 int negate;
1349
1350 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1351 res = read_conjunct(s, v, isl_map_copy(map), rational);
1352 if (negate)
1353 res = isl_map_subtract(isl_map_copy(map), res);
1354
1355 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1356 isl_map *res_i;
1357
1358 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1359 res_i = read_conjunct(s, v, isl_map_copy(map), rational);
1360 if (negate)
1361 res = isl_map_subtract(res, res_i);
1362 else
1363 res = isl_map_intersect(res, res_i);
1364 }
1365
1366 isl_map_free(map);
1367 return res;
1368 }
1369
1370 static struct isl_map *read_disjuncts(struct isl_stream *s,
1371 struct vars *v, __isl_take isl_map *map, int rational)
1372 {
1373 isl_map *res;
1374
1375 if (isl_stream_next_token_is(s, '}')) {
1376 isl_space *dim = isl_map_get_space(map);
1377 isl_map_free(map);
1378 return isl_map_universe(dim);
1379 }
1380
1381 res = read_conjuncts(s, v, isl_map_copy(map), rational);
1382 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1383 isl_map *res_i;
1384
1385 res_i = read_conjuncts(s, v, isl_map_copy(map), rational);
1386 res = isl_map_union(res, res_i);
1387 }
1388
1389 isl_map_free(map);
1390 return res;
1391 }
1392
1393 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1394 {
1395 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1396 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1397 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1398 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1399
1400 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1401 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1402 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1403
1404 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1405 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1406 isl_basic_map_dim(bmap, isl_dim_in) +
1407 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1408 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1409
1410 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1411 return 1 + pos;
1412
1413 return 0;
1414 }
1415
1416 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1417 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1418 {
1419 int j;
1420 struct isl_token *tok;
1421 int type;
1422 int k;
1423 isl_int *c;
1424 unsigned nparam;
1425 unsigned dim;
1426
1427 if (!bmap)
1428 return NULL;
1429
1430 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1431 dim = isl_basic_map_dim(bmap, isl_dim_out);
1432
1433 tok = isl_stream_next_token(s);
1434 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1435 isl_stream_error(s, tok, "expecting coefficient");
1436 if (tok)
1437 isl_stream_push_token(s, tok);
1438 goto error;
1439 }
1440 if (!tok->on_new_line) {
1441 isl_stream_error(s, tok, "coefficient should appear on new line");
1442 isl_stream_push_token(s, tok);
1443 goto error;
1444 }
1445
1446 type = isl_int_get_si(tok->u.v);
1447 isl_token_free(tok);
1448
1449 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1450 if (type == 0) {
1451 k = isl_basic_map_alloc_equality(bmap);
1452 c = bmap->eq[k];
1453 } else {
1454 k = isl_basic_map_alloc_inequality(bmap);
1455 c = bmap->ineq[k];
1456 }
1457 if (k < 0)
1458 goto error;
1459
1460 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1461 int pos;
1462 tok = isl_stream_next_token(s);
1463 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1464 isl_stream_error(s, tok, "expecting coefficient");
1465 if (tok)
1466 isl_stream_push_token(s, tok);
1467 goto error;
1468 }
1469 if (tok->on_new_line) {
1470 isl_stream_error(s, tok,
1471 "coefficient should not appear on new line");
1472 isl_stream_push_token(s, tok);
1473 goto error;
1474 }
1475 pos = polylib_pos_to_isl_pos(bmap, j);
1476 isl_int_set(c[pos], tok->u.v);
1477 isl_token_free(tok);
1478 }
1479
1480 return bmap;
1481 error:
1482 isl_basic_map_free(bmap);
1483 return NULL;
1484 }
1485
1486 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s)
1487 {
1488 int i;
1489 struct isl_token *tok;
1490 struct isl_token *tok2;
1491 int n_row, n_col;
1492 int on_new_line;
1493 unsigned in = 0, out, local = 0;
1494 struct isl_basic_map *bmap = NULL;
1495 int nparam = 0;
1496
1497 tok = isl_stream_next_token(s);
1498 if (!tok) {
1499 isl_stream_error(s, NULL, "unexpected EOF");
1500 return NULL;
1501 }
1502 tok2 = isl_stream_next_token(s);
1503 if (!tok2) {
1504 isl_token_free(tok);
1505 isl_stream_error(s, NULL, "unexpected EOF");
1506 return NULL;
1507 }
1508 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1509 isl_stream_push_token(s, tok2);
1510 isl_stream_push_token(s, tok);
1511 isl_stream_error(s, NULL,
1512 "expecting constraint matrix dimensions");
1513 return NULL;
1514 }
1515 n_row = isl_int_get_si(tok->u.v);
1516 n_col = isl_int_get_si(tok2->u.v);
1517 on_new_line = tok2->on_new_line;
1518 isl_token_free(tok2);
1519 isl_token_free(tok);
1520 isl_assert(s->ctx, !on_new_line, return NULL);
1521 isl_assert(s->ctx, n_row >= 0, return NULL);
1522 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1523 tok = isl_stream_next_token_on_same_line(s);
1524 if (tok) {
1525 if (tok->type != ISL_TOKEN_VALUE) {
1526 isl_stream_error(s, tok,
1527 "expecting number of output dimensions");
1528 isl_stream_push_token(s, tok);
1529 goto error;
1530 }
1531 out = isl_int_get_si(tok->u.v);
1532 isl_token_free(tok);
1533
1534 tok = isl_stream_next_token_on_same_line(s);
1535 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1536 isl_stream_error(s, tok,
1537 "expecting number of input dimensions");
1538 if (tok)
1539 isl_stream_push_token(s, tok);
1540 goto error;
1541 }
1542 in = isl_int_get_si(tok->u.v);
1543 isl_token_free(tok);
1544
1545 tok = isl_stream_next_token_on_same_line(s);
1546 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1547 isl_stream_error(s, tok,
1548 "expecting number of existentials");
1549 if (tok)
1550 isl_stream_push_token(s, tok);
1551 goto error;
1552 }
1553 local = isl_int_get_si(tok->u.v);
1554 isl_token_free(tok);
1555
1556 tok = isl_stream_next_token_on_same_line(s);
1557 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1558 isl_stream_error(s, tok,
1559 "expecting number of parameters");
1560 if (tok)
1561 isl_stream_push_token(s, tok);
1562 goto error;
1563 }
1564 nparam = isl_int_get_si(tok->u.v);
1565 isl_token_free(tok);
1566 if (n_col != 1 + out + in + local + nparam + 1) {
1567 isl_stream_error(s, NULL,
1568 "dimensions don't match");
1569 goto error;
1570 }
1571 } else
1572 out = n_col - 2 - nparam;
1573 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1574 if (!bmap)
1575 return NULL;
1576
1577 for (i = 0; i < local; ++i) {
1578 int k = isl_basic_map_alloc_div(bmap);
1579 if (k < 0)
1580 goto error;
1581 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1582 }
1583
1584 for (i = 0; i < n_row; ++i)
1585 bmap = basic_map_read_polylib_constraint(s, bmap);
1586
1587 tok = isl_stream_next_token_on_same_line(s);
1588 if (tok) {
1589 isl_stream_error(s, tok, "unexpected extra token on line");
1590 isl_stream_push_token(s, tok);
1591 goto error;
1592 }
1593
1594 bmap = isl_basic_map_simplify(bmap);
1595 bmap = isl_basic_map_finalize(bmap);
1596 return bmap;
1597 error:
1598 isl_basic_map_free(bmap);
1599 return NULL;
1600 }
1601
1602 static struct isl_map *map_read_polylib(struct isl_stream *s)
1603 {
1604 struct isl_token *tok;
1605 struct isl_token *tok2;
1606 int i, n;
1607 struct isl_map *map;
1608
1609 tok = isl_stream_next_token(s);
1610 if (!tok) {
1611 isl_stream_error(s, NULL, "unexpected EOF");
1612 return NULL;
1613 }
1614 tok2 = isl_stream_next_token_on_same_line(s);
1615 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1616 isl_stream_push_token(s, tok2);
1617 isl_stream_push_token(s, tok);
1618 return isl_map_from_basic_map(basic_map_read_polylib(s));
1619 }
1620 if (tok2) {
1621 isl_stream_error(s, tok2, "unexpected token");
1622 isl_stream_push_token(s, tok2);
1623 isl_stream_push_token(s, tok);
1624 return NULL;
1625 }
1626 n = isl_int_get_si(tok->u.v);
1627 isl_token_free(tok);
1628
1629 isl_assert(s->ctx, n >= 1, return NULL);
1630
1631 map = isl_map_from_basic_map(basic_map_read_polylib(s));
1632
1633 for (i = 1; map && i < n; ++i)
1634 map = isl_map_union(map,
1635 isl_map_from_basic_map(basic_map_read_polylib(s)));
1636
1637 return map;
1638 }
1639
1640 static int optional_power(struct isl_stream *s)
1641 {
1642 int pow;
1643 struct isl_token *tok;
1644
1645 tok = isl_stream_next_token(s);
1646 if (!tok)
1647 return 1;
1648 if (tok->type != '^') {
1649 isl_stream_push_token(s, tok);
1650 return 1;
1651 }
1652 isl_token_free(tok);
1653 tok = isl_stream_next_token(s);
1654 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1655 isl_stream_error(s, tok, "expecting exponent");
1656 if (tok)
1657 isl_stream_push_token(s, tok);
1658 return 1;
1659 }
1660 pow = isl_int_get_si(tok->u.v);
1661 isl_token_free(tok);
1662 return pow;
1663 }
1664
1665 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1666 __isl_keep isl_map *map, struct vars *v);
1667
1668 static __isl_give isl_pw_qpolynomial *read_factor(struct isl_stream *s,
1669 __isl_keep isl_map *map, struct vars *v)
1670 {
1671 isl_pw_qpolynomial *pwqp;
1672 struct isl_token *tok;
1673
1674 tok = next_token(s);
1675 if (!tok) {
1676 isl_stream_error(s, NULL, "unexpected EOF");
1677 return NULL;
1678 }
1679 if (tok->type == '(') {
1680 int pow;
1681
1682 isl_token_free(tok);
1683 pwqp = read_term(s, map, v);
1684 if (!pwqp)
1685 return NULL;
1686 if (isl_stream_eat(s, ')'))
1687 goto error;
1688 pow = optional_power(s);
1689 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1690 } else if (tok->type == ISL_TOKEN_VALUE) {
1691 struct isl_token *tok2;
1692 tok2 = isl_stream_next_token(s);
1693 isl_qpolynomial *qp;
1694 if (tok2 && tok2->type == '/') {
1695 isl_token_free(tok2);
1696 tok2 = next_token(s);
1697 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1698 isl_stream_error(s, tok2, "expected denominator");
1699 isl_token_free(tok);
1700 isl_token_free(tok2);
1701 return NULL;
1702 }
1703 qp = isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map),
1704 tok->u.v, tok2->u.v);
1705 isl_token_free(tok2);
1706 } else {
1707 isl_stream_push_token(s, tok2);
1708 qp = isl_qpolynomial_cst_on_domain(isl_map_get_space(map),
1709 tok->u.v);
1710 }
1711 isl_token_free(tok);
1712 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1713 } else if (tok->type == ISL_TOKEN_INFTY) {
1714 isl_qpolynomial *qp;
1715 isl_token_free(tok);
1716 qp = isl_qpolynomial_infty_on_domain(isl_map_get_space(map));
1717 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1718 } else if (tok->type == ISL_TOKEN_NAN) {
1719 isl_qpolynomial *qp;
1720 isl_token_free(tok);
1721 qp = isl_qpolynomial_nan_on_domain(isl_map_get_space(map));
1722 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1723 } else if (tok->type == ISL_TOKEN_IDENT) {
1724 int n = v->n;
1725 int pos = vars_pos(v, tok->u.s, -1);
1726 int pow;
1727 isl_qpolynomial *qp;
1728 if (pos < 0) {
1729 isl_token_free(tok);
1730 return NULL;
1731 }
1732 if (pos >= n) {
1733 vars_drop(v, v->n - n);
1734 isl_stream_error(s, tok, "unknown identifier");
1735 isl_token_free(tok);
1736 return NULL;
1737 }
1738 isl_token_free(tok);
1739 pow = optional_power(s);
1740 qp = isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map), pos, pow);
1741 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1742 } else if (tok->type == '[') {
1743 isl_pw_aff *pwaff;
1744 int pow;
1745
1746 isl_stream_push_token(s, tok);
1747 pwaff = accept_div(s, isl_map_get_space(map), v);
1748 pow = optional_power(s);
1749 pwqp = isl_pw_qpolynomial_from_pw_aff(pwaff);
1750 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1751 } else if (tok->type == '-') {
1752 isl_token_free(tok);
1753 pwqp = read_factor(s, map, v);
1754 pwqp = isl_pw_qpolynomial_neg(pwqp);
1755 } else {
1756 isl_stream_error(s, tok, "unexpected isl_token");
1757 isl_stream_push_token(s, tok);
1758 return NULL;
1759 }
1760
1761 if (isl_stream_eat_if_available(s, '*') ||
1762 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1763 isl_pw_qpolynomial *pwqp2;
1764
1765 pwqp2 = read_factor(s, map, v);
1766 pwqp = isl_pw_qpolynomial_mul(pwqp, pwqp2);
1767 }
1768
1769 return pwqp;
1770 error:
1771 isl_pw_qpolynomial_free(pwqp);
1772 return NULL;
1773 }
1774
1775 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1776 __isl_keep isl_map *map, struct vars *v)
1777 {
1778 struct isl_token *tok;
1779 isl_pw_qpolynomial *pwqp;
1780
1781 pwqp = read_factor(s, map, v);
1782
1783 for (;;) {
1784 tok = next_token(s);
1785 if (!tok)
1786 return pwqp;
1787
1788 if (tok->type == '+') {
1789 isl_pw_qpolynomial *pwqp2;
1790
1791 isl_token_free(tok);
1792 pwqp2 = read_factor(s, map, v);
1793 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1794 } else if (tok->type == '-') {
1795 isl_pw_qpolynomial *pwqp2;
1796
1797 isl_token_free(tok);
1798 pwqp2 = read_factor(s, map, v);
1799 pwqp = isl_pw_qpolynomial_sub(pwqp, pwqp2);
1800 } else if (tok->type == ISL_TOKEN_VALUE &&
1801 isl_int_is_neg(tok->u.v)) {
1802 isl_pw_qpolynomial *pwqp2;
1803
1804 isl_stream_push_token(s, tok);
1805 pwqp2 = read_factor(s, map, v);
1806 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1807 } else {
1808 isl_stream_push_token(s, tok);
1809 break;
1810 }
1811 }
1812
1813 return pwqp;
1814 }
1815
1816 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1817 __isl_take isl_map *map, struct vars *v, int rational)
1818 {
1819 struct isl_token *tok;
1820
1821 tok = isl_stream_next_token(s);
1822 if (!tok) {
1823 isl_stream_error(s, NULL, "unexpected EOF");
1824 goto error;
1825 }
1826 if (tok->type == ':' ||
1827 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1828 isl_token_free(tok);
1829 map = read_disjuncts(s, v, map, rational);
1830 } else
1831 isl_stream_push_token(s, tok);
1832
1833 return map;
1834 error:
1835 isl_map_free(map);
1836 return NULL;
1837 }
1838
1839 static struct isl_obj obj_read_poly(struct isl_stream *s,
1840 __isl_take isl_map *map, struct vars *v, int n)
1841 {
1842 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1843 isl_pw_qpolynomial *pwqp;
1844 struct isl_set *set;
1845
1846 pwqp = read_term(s, map, v);
1847 map = read_optional_disjuncts(s, map, v, 0);
1848 set = isl_map_range(map);
1849
1850 pwqp = isl_pw_qpolynomial_intersect_domain(pwqp, set);
1851
1852 vars_drop(v, v->n - n);
1853
1854 obj.v = pwqp;
1855 return obj;
1856 }
1857
1858 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1859 __isl_take isl_set *set, struct vars *v, int n)
1860 {
1861 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1862 isl_pw_qpolynomial *pwqp;
1863 isl_pw_qpolynomial_fold *pwf = NULL;
1864
1865 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1866 return obj_read_poly(s, set, v, n);
1867
1868 if (isl_stream_eat(s, '('))
1869 goto error;
1870
1871 pwqp = read_term(s, set, v);
1872 pwf = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max, pwqp);
1873
1874 while (isl_stream_eat_if_available(s, ',')) {
1875 isl_pw_qpolynomial_fold *pwf_i;
1876 pwqp = read_term(s, set, v);
1877 pwf_i = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max,
1878 pwqp);
1879 pwf = isl_pw_qpolynomial_fold_fold(pwf, pwf_i);
1880 }
1881
1882 if (isl_stream_eat(s, ')'))
1883 goto error;
1884
1885 set = read_optional_disjuncts(s, set, v, 0);
1886 pwf = isl_pw_qpolynomial_fold_intersect_domain(pwf, set);
1887
1888 vars_drop(v, v->n - n);
1889
1890 obj.v = pwf;
1891 return obj;
1892 error:
1893 isl_set_free(set);
1894 isl_pw_qpolynomial_fold_free(pwf);
1895 obj.type = isl_obj_none;
1896 return obj;
1897 }
1898
1899 static int is_rational(struct isl_stream *s)
1900 {
1901 struct isl_token *tok;
1902
1903 tok = isl_stream_next_token(s);
1904 if (!tok)
1905 return 0;
1906 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1907 isl_token_free(tok);
1908 isl_stream_eat(s, ':');
1909 return 1;
1910 }
1911
1912 isl_stream_push_token(s, tok);
1913
1914 return 0;
1915 }
1916
1917 static struct isl_obj obj_read_body(struct isl_stream *s,
1918 __isl_take isl_map *map, struct vars *v)
1919 {
1920 struct isl_token *tok;
1921 struct isl_obj obj = { isl_obj_set, NULL };
1922 int n = v->n;
1923 int rational;
1924
1925 rational = is_rational(s);
1926 if (rational)
1927 map = isl_map_set_rational(map);
1928
1929 if (isl_stream_next_token_is(s, ':')) {
1930 obj.type = isl_obj_set;
1931 obj.v = read_optional_disjuncts(s, map, v, rational);
1932 return obj;
1933 }
1934
1935 if (!next_is_tuple(s))
1936 return obj_read_poly_or_fold(s, map, v, n);
1937
1938 map = read_map_tuple(s, map, isl_dim_in, v, rational, 0);
1939 if (!map)
1940 goto error;
1941 tok = isl_stream_next_token(s);
1942 if (!tok)
1943 goto error;
1944 if (tok->type == ISL_TOKEN_TO) {
1945 obj.type = isl_obj_map;
1946 isl_token_free(tok);
1947 if (!next_is_tuple(s)) {
1948 isl_set *set = isl_map_domain(map);
1949 return obj_read_poly_or_fold(s, set, v, n);
1950 }
1951 map = read_map_tuple(s, map, isl_dim_out, v, rational, 0);
1952 if (!map)
1953 goto error;
1954 } else {
1955 map = isl_map_domain(map);
1956 isl_stream_push_token(s, tok);
1957 }
1958
1959 map = read_optional_disjuncts(s, map, v, rational);
1960
1961 vars_drop(v, v->n - n);
1962
1963 obj.v = map;
1964 return obj;
1965 error:
1966 isl_map_free(map);
1967 obj.type = isl_obj_none;
1968 return obj;
1969 }
1970
1971 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1972 {
1973 if (obj.type == isl_obj_map) {
1974 obj.v = isl_union_map_from_map(obj.v);
1975 obj.type = isl_obj_union_map;
1976 } else if (obj.type == isl_obj_set) {
1977 obj.v = isl_union_set_from_set(obj.v);
1978 obj.type = isl_obj_union_set;
1979 } else if (obj.type == isl_obj_pw_qpolynomial) {
1980 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1981 obj.type = isl_obj_union_pw_qpolynomial;
1982 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1983 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1984 obj.type = isl_obj_union_pw_qpolynomial_fold;
1985 } else
1986 isl_assert(ctx, 0, goto error);
1987 return obj;
1988 error:
1989 obj.type->free(obj.v);
1990 obj.type = isl_obj_none;
1991 return obj;
1992 }
1993
1994 static struct isl_obj obj_add(struct isl_ctx *ctx,
1995 struct isl_obj obj1, struct isl_obj obj2)
1996 {
1997 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1998 obj1 = to_union(ctx, obj1);
1999 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
2000 obj2 = to_union(ctx, obj2);
2001 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
2002 obj1 = to_union(ctx, obj1);
2003 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
2004 obj2 = to_union(ctx, obj2);
2005 if (obj1.type == isl_obj_pw_qpolynomial &&
2006 obj2.type == isl_obj_union_pw_qpolynomial)
2007 obj1 = to_union(ctx, obj1);
2008 if (obj1.type == isl_obj_union_pw_qpolynomial &&
2009 obj2.type == isl_obj_pw_qpolynomial)
2010 obj2 = to_union(ctx, obj2);
2011 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2012 obj2.type == isl_obj_union_pw_qpolynomial_fold)
2013 obj1 = to_union(ctx, obj1);
2014 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
2015 obj2.type == isl_obj_pw_qpolynomial_fold)
2016 obj2 = to_union(ctx, obj2);
2017 isl_assert(ctx, obj1.type == obj2.type, goto error);
2018 if (obj1.type == isl_obj_map && !isl_map_has_equal_space(obj1.v, obj2.v)) {
2019 obj1 = to_union(ctx, obj1);
2020 obj2 = to_union(ctx, obj2);
2021 }
2022 if (obj1.type == isl_obj_set && !isl_set_has_equal_space(obj1.v, obj2.v)) {
2023 obj1 = to_union(ctx, obj1);
2024 obj2 = to_union(ctx, obj2);
2025 }
2026 if (obj1.type == isl_obj_pw_qpolynomial &&
2027 !isl_pw_qpolynomial_has_equal_space(obj1.v, obj2.v)) {
2028 obj1 = to_union(ctx, obj1);
2029 obj2 = to_union(ctx, obj2);
2030 }
2031 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2032 !isl_pw_qpolynomial_fold_has_equal_space(obj1.v, obj2.v)) {
2033 obj1 = to_union(ctx, obj1);
2034 obj2 = to_union(ctx, obj2);
2035 }
2036 obj1.v = obj1.type->add(obj1.v, obj2.v);
2037 return obj1;
2038 error:
2039 obj1.type->free(obj1.v);
2040 obj2.type->free(obj2.v);
2041 obj1.type = isl_obj_none;
2042 obj1.v = NULL;
2043 return obj1;
2044 }
2045
2046 static struct isl_obj obj_read(struct isl_stream *s)
2047 {
2048 isl_map *map = NULL;
2049 struct isl_token *tok;
2050 struct vars *v = NULL;
2051 struct isl_obj obj = { isl_obj_set, NULL };
2052
2053 tok = next_token(s);
2054 if (!tok) {
2055 isl_stream_error(s, NULL, "unexpected EOF");
2056 goto error;
2057 }
2058 if (tok->type == ISL_TOKEN_VALUE) {
2059 struct isl_token *tok2;
2060 struct isl_map *map;
2061
2062 tok2 = isl_stream_next_token(s);
2063 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
2064 isl_int_is_neg(tok2->u.v)) {
2065 if (tok2)
2066 isl_stream_push_token(s, tok2);
2067 obj.type = isl_obj_int;
2068 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
2069 isl_token_free(tok);
2070 return obj;
2071 }
2072 isl_stream_push_token(s, tok2);
2073 isl_stream_push_token(s, tok);
2074 map = map_read_polylib(s);
2075 if (!map)
2076 goto error;
2077 if (isl_map_may_be_set(map))
2078 obj.v = isl_map_range(map);
2079 else {
2080 obj.type = isl_obj_map;
2081 obj.v = map;
2082 }
2083 return obj;
2084 }
2085 v = vars_new(s->ctx);
2086 if (!v) {
2087 isl_stream_push_token(s, tok);
2088 goto error;
2089 }
2090 map = isl_map_universe(isl_space_params_alloc(s->ctx, 0));
2091 if (tok->type == '[') {
2092 isl_stream_push_token(s, tok);
2093 map = read_map_tuple(s, map, isl_dim_param, v, 0, 0);
2094 if (!map)
2095 goto error;
2096 tok = isl_stream_next_token(s);
2097 if (!tok || tok->type != ISL_TOKEN_TO) {
2098 isl_stream_error(s, tok, "expecting '->'");
2099 if (tok)
2100 isl_stream_push_token(s, tok);
2101 goto error;
2102 }
2103 isl_token_free(tok);
2104 tok = isl_stream_next_token(s);
2105 }
2106 if (!tok || tok->type != '{') {
2107 isl_stream_error(s, tok, "expecting '{'");
2108 if (tok)
2109 isl_stream_push_token(s, tok);
2110 goto error;
2111 }
2112 isl_token_free(tok);
2113
2114 tok = isl_stream_next_token(s);
2115 if (!tok)
2116 ;
2117 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
2118 isl_token_free(tok);
2119 if (isl_stream_eat(s, '='))
2120 goto error;
2121 map = read_map_tuple(s, map, isl_dim_param, v, 0, 1);
2122 if (!map)
2123 goto error;
2124 } else if (tok->type == '}') {
2125 obj.type = isl_obj_union_set;
2126 obj.v = isl_union_set_empty(isl_map_get_space(map));
2127 isl_token_free(tok);
2128 goto done;
2129 } else
2130 isl_stream_push_token(s, tok);
2131
2132 for (;;) {
2133 struct isl_obj o;
2134 tok = NULL;
2135 o = obj_read_body(s, isl_map_copy(map), v);
2136 if (o.type == isl_obj_none || !o.v)
2137 goto error;
2138 if (!obj.v)
2139 obj = o;
2140 else {
2141 obj = obj_add(s->ctx, obj, o);
2142 if (obj.type == isl_obj_none || !obj.v)
2143 goto error;
2144 }
2145 tok = isl_stream_next_token(s);
2146 if (!tok || tok->type != ';')
2147 break;
2148 isl_token_free(tok);
2149 if (isl_stream_next_token_is(s, '}')) {
2150 tok = isl_stream_next_token(s);
2151 break;
2152 }
2153 }
2154
2155 if (tok && tok->type == '}') {
2156 isl_token_free(tok);
2157 } else {
2158 isl_stream_error(s, tok, "unexpected isl_token");
2159 if (tok)
2160 isl_token_free(tok);
2161 goto error;
2162 }
2163 done:
2164 vars_free(v);
2165 isl_map_free(map);
2166
2167 return obj;
2168 error:
2169 isl_map_free(map);
2170 obj.type->free(obj.v);
2171 if (v)
2172 vars_free(v);
2173 obj.v = NULL;
2174 return obj;
2175 }
2176
2177 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
2178 {
2179 return obj_read(s);
2180 }
2181
2182 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s)
2183 {
2184 struct isl_obj obj;
2185
2186 obj = obj_read(s);
2187 if (obj.v)
2188 isl_assert(s->ctx, obj.type == isl_obj_map ||
2189 obj.type == isl_obj_set, goto error);
2190
2191 if (obj.type == isl_obj_set)
2192 obj.v = isl_map_from_range(obj.v);
2193
2194 return obj.v;
2195 error:
2196 obj.type->free(obj.v);
2197 return NULL;
2198 }
2199
2200 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s)
2201 {
2202 struct isl_obj obj;
2203
2204 obj = obj_read(s);
2205 if (obj.v) {
2206 if (obj.type == isl_obj_map && isl_map_may_be_set(obj.v)) {
2207 obj.v = isl_map_range(obj.v);
2208 obj.type = isl_obj_set;
2209 }
2210 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2211 }
2212
2213 return obj.v;
2214 error:
2215 obj.type->free(obj.v);
2216 return NULL;
2217 }
2218
2219 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2220 {
2221 struct isl_obj obj;
2222
2223 obj = obj_read(s);
2224 if (obj.type == isl_obj_map) {
2225 obj.type = isl_obj_union_map;
2226 obj.v = isl_union_map_from_map(obj.v);
2227 }
2228 if (obj.type == isl_obj_set) {
2229 obj.type = isl_obj_union_set;
2230 obj.v = isl_union_set_from_set(obj.v);
2231 }
2232 if (obj.v && obj.type == isl_obj_union_set &&
2233 isl_union_set_is_empty(obj.v))
2234 obj.type = isl_obj_union_map;
2235 if (obj.v && obj.type != isl_obj_union_map)
2236 isl_die(s->ctx, isl_error_invalid, "invalid input", goto error);
2237
2238 return obj.v;
2239 error:
2240 obj.type->free(obj.v);
2241 return NULL;
2242 }
2243
2244 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2245 {
2246 struct isl_obj obj;
2247
2248 obj = obj_read(s);
2249 if (obj.type == isl_obj_set) {
2250 obj.type = isl_obj_union_set;
2251 obj.v = isl_union_set_from_set(obj.v);
2252 }
2253 if (obj.v)
2254 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2255
2256 return obj.v;
2257 error:
2258 obj.type->free(obj.v);
2259 return NULL;
2260 }
2261
2262 static __isl_give isl_basic_map *basic_map_read(struct isl_stream *s)
2263 {
2264 struct isl_obj obj;
2265 struct isl_map *map;
2266 struct isl_basic_map *bmap;
2267
2268 obj = obj_read(s);
2269 map = obj.v;
2270 if (!map)
2271 return NULL;
2272
2273 isl_assert(map->ctx, map->n <= 1, goto error);
2274
2275 if (map->n == 0)
2276 bmap = isl_basic_map_empty_like_map(map);
2277 else
2278 bmap = isl_basic_map_copy(map->p[0]);
2279
2280 isl_map_free(map);
2281
2282 return bmap;
2283 error:
2284 isl_map_free(map);
2285 return NULL;
2286 }
2287
2288 static __isl_give isl_basic_set *basic_set_read(struct isl_stream *s)
2289 {
2290 isl_basic_map *bmap;
2291 bmap = basic_map_read(s);
2292 if (!bmap)
2293 return NULL;
2294 if (!isl_basic_map_may_be_set(bmap))
2295 isl_die(s->ctx, isl_error_invalid,
2296 "input is not a set", goto error);
2297 return isl_basic_map_range(bmap);
2298 error:
2299 isl_basic_map_free(bmap);
2300 return NULL;
2301 }
2302
2303 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2304 FILE *input)
2305 {
2306 struct isl_basic_map *bmap;
2307 struct isl_stream *s = isl_stream_new_file(ctx, input);
2308 if (!s)
2309 return NULL;
2310 bmap = basic_map_read(s);
2311 isl_stream_free(s);
2312 return bmap;
2313 }
2314
2315 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2316 FILE *input)
2317 {
2318 isl_basic_set *bset;
2319 struct isl_stream *s = isl_stream_new_file(ctx, input);
2320 if (!s)
2321 return NULL;
2322 bset = basic_set_read(s);
2323 isl_stream_free(s);
2324 return bset;
2325 }
2326
2327 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2328 const char *str)
2329 {
2330 struct isl_basic_map *bmap;
2331 struct isl_stream *s = isl_stream_new_str(ctx, str);
2332 if (!s)
2333 return NULL;
2334 bmap = basic_map_read(s);
2335 isl_stream_free(s);
2336 return bmap;
2337 }
2338
2339 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2340 const char *str)
2341 {
2342 isl_basic_set *bset;
2343 struct isl_stream *s = isl_stream_new_str(ctx, str);
2344 if (!s)
2345 return NULL;
2346 bset = basic_set_read(s);
2347 isl_stream_free(s);
2348 return bset;
2349 }
2350
2351 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2352 FILE *input)
2353 {
2354 struct isl_map *map;
2355 struct isl_stream *s = isl_stream_new_file(ctx, input);
2356 if (!s)
2357 return NULL;
2358 map = isl_stream_read_map(s);
2359 isl_stream_free(s);
2360 return map;
2361 }
2362
2363 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2364 const char *str)
2365 {
2366 struct isl_map *map;
2367 struct isl_stream *s = isl_stream_new_str(ctx, str);
2368 if (!s)
2369 return NULL;
2370 map = isl_stream_read_map(s);
2371 isl_stream_free(s);
2372 return map;
2373 }
2374
2375 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2376 FILE *input)
2377 {
2378 isl_set *set;
2379 struct isl_stream *s = isl_stream_new_file(ctx, input);
2380 if (!s)
2381 return NULL;
2382 set = isl_stream_read_set(s);
2383 isl_stream_free(s);
2384 return set;
2385 }
2386
2387 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2388 const char *str)
2389 {
2390 isl_set *set;
2391 struct isl_stream *s = isl_stream_new_str(ctx, str);
2392 if (!s)
2393 return NULL;
2394 set = isl_stream_read_set(s);
2395 isl_stream_free(s);
2396 return set;
2397 }
2398
2399 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2400 FILE *input)
2401 {
2402 isl_union_map *umap;
2403 struct isl_stream *s = isl_stream_new_file(ctx, input);
2404 if (!s)
2405 return NULL;
2406 umap = isl_stream_read_union_map(s);
2407 isl_stream_free(s);
2408 return umap;
2409 }
2410
2411 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2412 const char *str)
2413 {
2414 isl_union_map *umap;
2415 struct isl_stream *s = isl_stream_new_str(ctx, str);
2416 if (!s)
2417 return NULL;
2418 umap = isl_stream_read_union_map(s);
2419 isl_stream_free(s);
2420 return umap;
2421 }
2422
2423 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2424 FILE *input)
2425 {
2426 isl_union_set *uset;
2427 struct isl_stream *s = isl_stream_new_file(ctx, input);
2428 if (!s)
2429 return NULL;
2430 uset = isl_stream_read_union_set(s);
2431 isl_stream_free(s);
2432 return uset;
2433 }
2434
2435 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2436 const char *str)
2437 {
2438 isl_union_set *uset;
2439 struct isl_stream *s = isl_stream_new_str(ctx, str);
2440 if (!s)
2441 return NULL;
2442 uset = isl_stream_read_union_set(s);
2443 isl_stream_free(s);
2444 return uset;
2445 }
2446
2447 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2448 {
2449 struct isl_vec *vec = NULL;
2450 struct isl_token *tok;
2451 unsigned size;
2452 int j;
2453
2454 tok = isl_stream_next_token(s);
2455 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2456 isl_stream_error(s, tok, "expecting vector length");
2457 goto error;
2458 }
2459
2460 size = isl_int_get_si(tok->u.v);
2461 isl_token_free(tok);
2462
2463 vec = isl_vec_alloc(s->ctx, size);
2464
2465 for (j = 0; j < size; ++j) {
2466 tok = isl_stream_next_token(s);
2467 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2468 isl_stream_error(s, tok, "expecting constant value");
2469 goto error;
2470 }
2471 isl_int_set(vec->el[j], tok->u.v);
2472 isl_token_free(tok);
2473 }
2474
2475 return vec;
2476 error:
2477 isl_token_free(tok);
2478 isl_vec_free(vec);
2479 return NULL;
2480 }
2481
2482 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2483 {
2484 return isl_vec_read_polylib(s);
2485 }
2486
2487 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2488 {
2489 isl_vec *v;
2490 struct isl_stream *s = isl_stream_new_file(ctx, input);
2491 if (!s)
2492 return NULL;
2493 v = vec_read(s);
2494 isl_stream_free(s);
2495 return v;
2496 }
2497
2498 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2499 struct isl_stream *s)
2500 {
2501 struct isl_obj obj;
2502
2503 obj = obj_read(s);
2504 if (obj.v)
2505 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2506 goto error);
2507
2508 return obj.v;
2509 error:
2510 obj.type->free(obj.v);
2511 return NULL;
2512 }
2513
2514 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2515 const char *str)
2516 {
2517 isl_pw_qpolynomial *pwqp;
2518 struct isl_stream *s = isl_stream_new_str(ctx, str);
2519 if (!s)
2520 return NULL;
2521 pwqp = isl_stream_read_pw_qpolynomial(s);
2522 isl_stream_free(s);
2523 return pwqp;
2524 }
2525
2526 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_file(isl_ctx *ctx,
2527 FILE *input)
2528 {
2529 isl_pw_qpolynomial *pwqp;
2530 struct isl_stream *s = isl_stream_new_file(ctx, input);
2531 if (!s)
2532 return NULL;
2533 pwqp = isl_stream_read_pw_qpolynomial(s);
2534 isl_stream_free(s);
2535 return pwqp;
2536 }
2537
2538 /* Is the next token an identifer not in "v"?
2539 */
2540 static int next_is_fresh_ident(struct isl_stream *s, struct vars *v)
2541 {
2542 int n = v->n;
2543 int fresh;
2544 struct isl_token *tok;
2545
2546 tok = isl_stream_next_token(s);
2547 if (!tok)
2548 return 0;
2549 fresh = tok->type == ISL_TOKEN_IDENT && vars_pos(v, tok->u.s, -1) >= n;
2550 isl_stream_push_token(s, tok);
2551
2552 vars_drop(v, v->n - n);
2553
2554 return fresh;
2555 }
2556
2557 /* First read the domain of the affine expression, which may be
2558 * a parameter space or a set.
2559 * The tricky part is that we don't know if the domain is a set or not,
2560 * so when we are trying to read the domain, we may actually be reading
2561 * the affine expression itself (defined on a parameter domains)
2562 * If the tuple we are reading is named, we assume it's the domain.
2563 * Also, if inside the tuple, the first thing we find is a nested tuple
2564 * or a new identifier, we again assume it's the domain.
2565 * Otherwise, we assume we are reading an affine expression.
2566 */
2567 static __isl_give isl_set *read_aff_domain(struct isl_stream *s,
2568 __isl_take isl_set *dom, struct vars *v)
2569 {
2570 struct isl_token *tok;
2571
2572 tok = isl_stream_next_token(s);
2573 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
2574 isl_stream_push_token(s, tok);
2575 return read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2576 }
2577 if (!tok || tok->type != '[') {
2578 isl_stream_error(s, tok, "expecting '['");
2579 goto error;
2580 }
2581 if (next_is_tuple(s) || next_is_fresh_ident(s, v)) {
2582 isl_stream_push_token(s, tok);
2583 dom = read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2584 } else
2585 isl_stream_push_token(s, tok);
2586
2587 return dom;
2588 error:
2589 if (tok)
2590 isl_stream_push_token(s, tok);
2591 isl_set_free(dom);
2592 return NULL;
2593 }
2594
2595 /* Read an affine expression from "s".
2596 */
2597 __isl_give isl_aff *isl_stream_read_aff(struct isl_stream *s)
2598 {
2599 isl_aff *aff;
2600 isl_multi_aff *ma;
2601
2602 ma = isl_stream_read_multi_aff(s);
2603 if (!ma)
2604 return NULL;
2605 if (isl_multi_aff_dim(ma, isl_dim_out) != 1)
2606 isl_die(s->ctx, isl_error_invalid,
2607 "expecting single affine expression",
2608 goto error);
2609
2610 aff = isl_multi_aff_get_aff(ma, 0);
2611 isl_multi_aff_free(ma);
2612 return aff;
2613 error:
2614 isl_multi_aff_free(ma);
2615 return NULL;
2616 }
2617
2618 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2619 */
2620 static __isl_give isl_pw_aff *read_pw_aff_with_dom(struct isl_stream *s,
2621 __isl_take isl_set *dom, struct vars *v)
2622 {
2623 isl_pw_aff *pwaff = NULL;
2624
2625 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2626 goto error;
2627
2628 if (isl_stream_eat(s, '['))
2629 goto error;
2630
2631 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2632
2633 if (isl_stream_eat(s, ']'))
2634 goto error;
2635
2636 dom = read_optional_disjuncts(s, dom, v, 0);
2637 pwaff = isl_pw_aff_intersect_domain(pwaff, dom);
2638
2639 return pwaff;
2640 error:
2641 isl_set_free(dom);
2642 isl_pw_aff_free(pwaff);
2643 return NULL;
2644 }
2645
2646 __isl_give isl_pw_aff *isl_stream_read_pw_aff(struct isl_stream *s)
2647 {
2648 struct vars *v;
2649 isl_set *dom = NULL;
2650 isl_set *aff_dom;
2651 isl_pw_aff *pa = NULL;
2652 int n;
2653
2654 v = vars_new(s->ctx);
2655 if (!v)
2656 return NULL;
2657
2658 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2659 if (next_is_tuple(s)) {
2660 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2661 if (isl_stream_eat(s, ISL_TOKEN_TO))
2662 goto error;
2663 }
2664 if (isl_stream_eat(s, '{'))
2665 goto error;
2666
2667 n = v->n;
2668 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2669 pa = read_pw_aff_with_dom(s, aff_dom, v);
2670 vars_drop(v, v->n - n);
2671
2672 while (isl_stream_eat_if_available(s, ';')) {
2673 isl_pw_aff *pa_i;
2674
2675 n = v->n;
2676 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2677 pa_i = read_pw_aff_with_dom(s, aff_dom, v);
2678 vars_drop(v, v->n - n);
2679
2680 pa = isl_pw_aff_union_add(pa, pa_i);
2681 }
2682
2683 if (isl_stream_eat(s, '}'))
2684 goto error;
2685
2686 vars_free(v);
2687 isl_set_free(dom);
2688 return pa;
2689 error:
2690 vars_free(v);
2691 isl_set_free(dom);
2692 isl_pw_aff_free(pa);
2693 return NULL;
2694 }
2695
2696 __isl_give isl_aff *isl_aff_read_from_str(isl_ctx *ctx, const char *str)
2697 {
2698 isl_aff *aff;
2699 struct isl_stream *s = isl_stream_new_str(ctx, str);
2700 if (!s)
2701 return NULL;
2702 aff = isl_stream_read_aff(s);
2703 isl_stream_free(s);
2704 return aff;
2705 }
2706
2707 __isl_give isl_pw_aff *isl_pw_aff_read_from_str(isl_ctx *ctx, const char *str)
2708 {
2709 isl_pw_aff *pa;
2710 struct isl_stream *s = isl_stream_new_str(ctx, str);
2711 if (!s)
2712 return NULL;
2713 pa = isl_stream_read_pw_aff(s);
2714 isl_stream_free(s);
2715 return pa;
2716 }
2717
2718 /* Read an isl_pw_multi_aff from "s".
2719 * We currently read a generic object and if it turns out to be a set or
2720 * a map, we convert that to an isl_pw_multi_aff.
2721 * It would be more efficient if we were to construct the isl_pw_multi_aff
2722 * directly.
2723 */
2724 __isl_give isl_pw_multi_aff *isl_stream_read_pw_multi_aff(struct isl_stream *s)
2725 {
2726 struct isl_obj obj;
2727
2728 obj = obj_read(s);
2729 if (!obj.v)
2730 return NULL;
2731
2732 if (obj.type == isl_obj_map)
2733 return isl_pw_multi_aff_from_map(obj.v);
2734 if (obj.type == isl_obj_set)
2735 return isl_pw_multi_aff_from_set(obj.v);
2736
2737 obj.type->free(obj.v);
2738 isl_die(s->ctx, isl_error_invalid, "unexpected object type",
2739 return NULL);
2740 }
2741
2742 __isl_give isl_pw_multi_aff *isl_pw_multi_aff_read_from_str(isl_ctx *ctx,
2743 const char *str)
2744 {
2745 isl_pw_multi_aff *pma;
2746 struct isl_stream *s = isl_stream_new_str(ctx, str);
2747 if (!s)
2748 return NULL;
2749 pma = isl_stream_read_pw_multi_aff(s);
2750 isl_stream_free(s);
2751 return pma;
2752 }
2753
2754 /* Assuming "pa" represents a single affine expression defined on a universe
2755 * domain, extract this affine expression.
2756 */
2757 static __isl_give isl_aff *aff_from_pw_aff(__isl_take isl_pw_aff *pa)
2758 {
2759 isl_aff *aff;
2760
2761 if (!pa)
2762 return NULL;
2763 if (pa->n != 1)
2764 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2765 "expecting single affine expression",
2766 goto error);
2767 if (!isl_set_plain_is_universe(pa->p[0].set))
2768 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2769 "expecting universe domain",
2770 goto error);
2771
2772 aff = isl_aff_copy(pa->p[0].aff);
2773 isl_pw_aff_free(pa);
2774 return aff;
2775 error:
2776 isl_pw_aff_free(pa);
2777 return NULL;
2778 }
2779
2780 /* Read a multi-affine expression from "s".
2781 * If the multi-affine expression has a domain, then then tuple
2782 * representing this domain cannot involve any affine expressions.
2783 * The tuple representing the actual expressions needs to consist
2784 * of only affine expressions. Moreover, these expressions can
2785 * only depend on parameters and input dimensions and not on other
2786 * output dimensions.
2787 */
2788 __isl_give isl_multi_aff *isl_stream_read_multi_aff(struct isl_stream *s)
2789 {
2790 struct vars *v;
2791 isl_set *dom = NULL;
2792 isl_multi_pw_aff *tuple = NULL;
2793 int dim, i, n;
2794 isl_space *space, *dom_space;
2795 isl_multi_aff *ma = NULL;
2796
2797 v = vars_new(s->ctx);
2798 if (!v)
2799 return NULL;
2800
2801 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2802 if (next_is_tuple(s)) {
2803 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2804 if (isl_stream_eat(s, ISL_TOKEN_TO))
2805 goto error;
2806 }
2807 if (!isl_set_plain_is_universe(dom))
2808 isl_die(s->ctx, isl_error_invalid,
2809 "expecting universe parameter domain", goto error);
2810 if (isl_stream_eat(s, '{'))
2811 goto error;
2812
2813 tuple = read_tuple(s, v, 0, 0);
2814 if (!tuple)
2815 goto error;
2816 if (isl_stream_eat_if_available(s, ISL_TOKEN_TO)) {
2817 isl_set *set;
2818 isl_space *space;
2819 int has_expr;
2820
2821 has_expr = tuple_has_expr(tuple);
2822 if (has_expr < 0)
2823 goto error;
2824 if (has_expr)
2825 isl_die(s->ctx, isl_error_invalid,
2826 "expecting universe domain", goto error);
2827 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2828 set = isl_set_universe(space);
2829 dom = isl_set_intersect_params(set, dom);
2830 isl_multi_pw_aff_free(tuple);
2831 tuple = read_tuple(s, v, 0, 0);
2832 if (!tuple)
2833 goto error;
2834 }
2835
2836 if (isl_stream_eat(s, '}'))
2837 goto error;
2838
2839 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
2840 dim = isl_set_dim(dom, isl_dim_all);
2841 dom_space = isl_set_get_space(dom);
2842 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2843 space = isl_space_align_params(space, isl_space_copy(dom_space));
2844 if (!isl_space_is_params(dom_space))
2845 space = isl_space_map_from_domain_and_range(
2846 isl_space_copy(dom_space), space);
2847 isl_space_free(dom_space);
2848 ma = isl_multi_aff_alloc(space);
2849
2850 for (i = 0; i < n; ++i) {
2851 isl_pw_aff *pa;
2852 isl_aff *aff;
2853 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
2854 aff = aff_from_pw_aff(pa);
2855 if (!aff)
2856 goto error;
2857 if (isl_aff_involves_dims(aff, isl_dim_in, dim, i + 1)) {
2858 isl_aff_free(aff);
2859 isl_die(s->ctx, isl_error_invalid,
2860 "not an affine expression", goto error);
2861 }
2862 aff = isl_aff_drop_dims(aff, isl_dim_in, dim, n);
2863 space = isl_multi_aff_get_domain_space(ma);
2864 aff = isl_aff_reset_domain_space(aff, space);
2865 ma = isl_multi_aff_set_aff(ma, i, aff);
2866 }
2867
2868 isl_multi_pw_aff_free(tuple);
2869 vars_free(v);
2870 isl_set_free(dom);
2871 return ma;
2872 error:
2873 isl_multi_pw_aff_free(tuple);
2874 vars_free(v);
2875 isl_set_free(dom);
2876 isl_multi_aff_free(ma);
2877 return NULL;
2878 }
2879
2880 __isl_give isl_multi_aff *isl_multi_aff_read_from_str(isl_ctx *ctx,
2881 const char *str)
2882 {
2883 isl_multi_aff *maff;
2884 struct isl_stream *s = isl_stream_new_str(ctx, str);
2885 if (!s)
2886 return NULL;
2887 maff = isl_stream_read_multi_aff(s);
2888 isl_stream_free(s);
2889 return maff;
2890 }
2891
2892 __isl_give isl_union_pw_qpolynomial *isl_stream_read_union_pw_qpolynomial(
2893 struct isl_stream *s)
2894 {
2895 struct isl_obj obj;
2896
2897 obj = obj_read(s);
2898 if (obj.type == isl_obj_pw_qpolynomial) {
2899 obj.type = isl_obj_union_pw_qpolynomial;
2900 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
2901 }
2902 if (obj.v)
2903 isl_assert(s->ctx, obj.type == isl_obj_union_pw_qpolynomial,
2904 goto error);
2905
2906 return obj.v;
2907 error:
2908 obj.type->free(obj.v);
2909 return NULL;
2910 }
2911
2912 __isl_give isl_union_pw_qpolynomial *isl_union_pw_qpolynomial_read_from_str(
2913 isl_ctx *ctx, const char *str)
2914 {
2915 isl_union_pw_qpolynomial *upwqp;
2916 struct isl_stream *s = isl_stream_new_str(ctx, str);
2917 if (!s)
2918 return NULL;
2919 upwqp = isl_stream_read_union_pw_qpolynomial(s);
2920 isl_stream_free(s);
2921 return upwqp;
2922 }
Integer set library