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isl_test.c: test_ast: avoid invalid access on error
[isl.git] / isl_input.c
blobf0c3d7caba41a253369e02762b5615cc15613f11
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 (new_name) {
945 res = tuple_set_dim_name(res, i, v->v->name);
946 isl_token_free(tok);
947 if (isl_stream_eat_if_available(s, '='))
948 res = read_tuple_var_def(s, res, i, v,
949 rational);
950 } else {
951 isl_stream_push_token(s, tok);
952 tok = NULL;
953 if (vars_add_anon(v) < 0)
954 goto error;
955 res = read_tuple_var_def(s, res, i, v, rational);
956 }
957
958 tok = isl_stream_next_token(s);
959 if (!comma && tok && tok->type == ']' &&
960 isl_stream_next_token_is(s, '[')) {
961 isl_token_free(tok);
962 tok = isl_stream_next_token(s);
963 } else if (!tok || tok->type != ',')
964 break;
965
966 isl_token_free(tok);
967 i++;
968 }
969 if (tok)
970 isl_stream_push_token(s, tok);
971
972 return res;
973 error:
974 isl_token_free(tok);
975 return isl_multi_pw_aff_free(res);
976 }
977
978 /* Read a tuple and represent it as an isl_multi_pw_aff. See tuple_alloc.
979 */
980 static __isl_give isl_multi_pw_aff *read_tuple(struct isl_stream *s,
981 struct vars *v, int rational, int comma)
982 {
983 struct isl_token *tok;
984 char *name = NULL;
985 isl_multi_pw_aff *res = NULL;
986
987 tok = isl_stream_next_token(s);
988 if (!tok)
989 goto error;
990 if (tok->type == ISL_TOKEN_IDENT || tok->is_keyword) {
991 name = strdup(tok->u.s);
992 isl_token_free(tok);
993 if (!name)
994 goto error;
995 } else
996 isl_stream_push_token(s, tok);
997 if (isl_stream_eat(s, '['))
998 goto error;
999 if (next_is_tuple(s)) {
1000 isl_multi_pw_aff *out;
1001 int n;
1002 res = read_tuple(s, v, rational, comma);
1003 if (isl_stream_eat(s, ISL_TOKEN_TO))
1004 goto error;
1005 out = read_tuple(s, v, rational, comma);
1006 n = isl_multi_pw_aff_dim(out, isl_dim_out);
1007 res = isl_multi_pw_aff_add_dims(res, isl_dim_in, n);
1008 res = isl_multi_pw_aff_range_product(res, out);
1009 } else
1010 res = read_tuple_var_list(s, v, rational, comma);
1011 if (isl_stream_eat(s, ']'))
1012 goto error;
1013
1014 if (name) {
1015 res = isl_multi_pw_aff_set_tuple_name(res, isl_dim_out, name);
1016 free(name);
1017 }
1018
1019 return res;
1020 error:
1021 free(name);
1022 return isl_multi_pw_aff_free(res);
1023 }
1024
1025 /* Read a tuple from "s" and add it to "map".
1026 * The tuple is initially represented as an isl_multi_pw_aff.
1027 * We first create the appropriate space in "map" based on the range
1028 * space of this isl_multi_pw_aff. Then, we add equalities based
1029 * on the affine expressions. These live in an anonymous space,
1030 * however, so we first need to reset the space to that of "map".
1031 */
1032 static __isl_give isl_map *read_map_tuple(struct isl_stream *s,
1033 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v,
1034 int rational, int comma)
1035 {
1036 int i, n;
1037 isl_multi_pw_aff *tuple;
1038 isl_space *space = NULL;
1039
1040 tuple = read_tuple(s, v, rational, comma);
1041 if (!tuple)
1042 goto error;
1043
1044 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
1045 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
1046 if (!space)
1047 goto error;
1048
1049 if (type == isl_dim_param) {
1050 if (isl_space_has_tuple_name(space, isl_dim_set) ||
1051 isl_space_is_wrapping(space)) {
1052 isl_die(s->ctx, isl_error_invalid,
1053 "parameter tuples cannot be named or nested",
1054 goto error);
1055 }
1056 map = isl_map_add_dims(map, type, n);
1057 for (i = 0; i < n; ++i) {
1058 isl_id *id;
1059 if (!isl_space_has_dim_name(space, isl_dim_set, i))
1060 isl_die(s->ctx, isl_error_invalid,
1061 "parameters must be named",
1062 goto error);
1063 id = isl_space_get_dim_id(space, isl_dim_set, i);
1064 map = isl_map_set_dim_id(map, isl_dim_param, i, id);
1065 }
1066 } else if (type == isl_dim_in) {
1067 isl_set *set;
1068
1069 set = isl_set_universe(isl_space_copy(space));
1070 if (rational)
1071 set = isl_set_set_rational(set);
1072 set = isl_set_intersect_params(set, isl_map_params(map));
1073 map = isl_map_from_domain(set);
1074 } else {
1075 isl_set *set;
1076
1077 set = isl_set_universe(isl_space_copy(space));
1078 if (rational)
1079 set = isl_set_set_rational(set);
1080 map = isl_map_from_domain_and_range(isl_map_domain(map), set);
1081 }
1082
1083 for (i = 0; i < n; ++i) {
1084 isl_pw_aff *pa;
1085 isl_space *space;
1086 isl_aff *aff;
1087 isl_set *set;
1088 isl_map *map_i;
1089
1090 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
1091 space = isl_pw_aff_get_domain_space(pa);
1092 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
1093 aff = isl_aff_add_coefficient_si(aff,
1094 isl_dim_in, v->n - n + i, -1);
1095 pa = isl_pw_aff_add(pa, isl_pw_aff_from_aff(aff));
1096 if (rational)
1097 pa = isl_pw_aff_set_rational(pa);
1098 set = isl_pw_aff_zero_set(pa);
1099 map_i = isl_map_from_range(set);
1100 map_i = isl_map_reset_space(map_i, isl_map_get_space(map));
1101 map = isl_map_intersect(map, map_i);
1102 }
1103
1104 isl_space_free(space);
1105 isl_multi_pw_aff_free(tuple);
1106 return map;
1107 error:
1108 isl_space_free(space);
1109 isl_multi_pw_aff_free(tuple);
1110 isl_map_free(map);
1111 return NULL;
1112 }
1113
1114 static __isl_give isl_set *construct_constraints(
1115 __isl_take isl_set *set, int type,
1116 __isl_keep isl_pw_aff_list *left, __isl_keep isl_pw_aff_list *right,
1117 int rational)
1118 {
1119 isl_set *cond;
1120
1121 left = isl_pw_aff_list_copy(left);
1122 right = isl_pw_aff_list_copy(right);
1123 if (rational) {
1124 left = isl_pw_aff_list_set_rational(left);
1125 right = isl_pw_aff_list_set_rational(right);
1126 }
1127 if (type == ISL_TOKEN_LE)
1128 cond = isl_pw_aff_list_le_set(left, right);
1129 else if (type == ISL_TOKEN_GE)
1130 cond = isl_pw_aff_list_ge_set(left, right);
1131 else if (type == ISL_TOKEN_LT)
1132 cond = isl_pw_aff_list_lt_set(left, right);
1133 else if (type == ISL_TOKEN_GT)
1134 cond = isl_pw_aff_list_gt_set(left, right);
1135 else if (type == ISL_TOKEN_NE)
1136 cond = isl_pw_aff_list_ne_set(left, right);
1137 else
1138 cond = isl_pw_aff_list_eq_set(left, right);
1139
1140 return isl_set_intersect(set, cond);
1141 }
1142
1143 static __isl_give isl_map *add_constraint(struct isl_stream *s,
1144 struct vars *v, __isl_take isl_map *map, int rational)
1145 {
1146 struct isl_token *tok = NULL;
1147 isl_pw_aff_list *list1 = NULL, *list2 = NULL;
1148 isl_set *set;
1149
1150 set = isl_map_wrap(map);
1151 list1 = accept_affine_list(s, isl_set_get_space(set), v);
1152 if (!list1)
1153 goto error;
1154 tok = isl_stream_next_token(s);
1155 if (!is_comparator(tok)) {
1156 isl_stream_error(s, tok, "missing operator");
1157 if (tok)
1158 isl_stream_push_token(s, tok);
1159 tok = NULL;
1160 goto error;
1161 }
1162 for (;;) {
1163 list2 = accept_affine_list(s, isl_set_get_space(set), v);
1164 if (!list2)
1165 goto error;
1166
1167 set = construct_constraints(set, tok->type, list1, list2,
1168 rational);
1169 isl_token_free(tok);
1170 isl_pw_aff_list_free(list1);
1171 list1 = list2;
1172
1173 tok = isl_stream_next_token(s);
1174 if (!is_comparator(tok)) {
1175 if (tok)
1176 isl_stream_push_token(s, tok);
1177 break;
1178 }
1179 }
1180 isl_pw_aff_list_free(list1);
1181
1182 return isl_set_unwrap(set);
1183 error:
1184 if (tok)
1185 isl_token_free(tok);
1186 isl_pw_aff_list_free(list1);
1187 isl_pw_aff_list_free(list2);
1188 isl_set_free(set);
1189 return NULL;
1190 }
1191
1192 static __isl_give isl_map *read_exists(struct isl_stream *s,
1193 struct vars *v, __isl_take isl_map *map, int rational)
1194 {
1195 int n = v->n;
1196 int seen_paren = isl_stream_eat_if_available(s, '(');
1197
1198 map = isl_map_from_domain(isl_map_wrap(map));
1199 map = read_defined_var_list(s, v, map, rational);
1200
1201 if (isl_stream_eat(s, ':'))
1202 goto error;
1203
1204 map = read_disjuncts(s, v, map, rational);
1205 map = isl_set_unwrap(isl_map_domain(map));
1206
1207 vars_drop(v, v->n - n);
1208 if (seen_paren && isl_stream_eat(s, ')'))
1209 goto error;
1210
1211 return map;
1212 error:
1213 isl_map_free(map);
1214 return NULL;
1215 }
1216
1217 /* Parse an expression between parentheses and push the result
1218 * back on the stream.
1219 *
1220 * The parsed expression may be either an affine expression
1221 * or a condition. The first type is pushed onto the stream
1222 * as an isl_pw_aff, while the second is pushed as an isl_map.
1223 *
1224 * If the initial token indicates the start of a condition,
1225 * we parse it as such.
1226 * Otherwise, we first parse an affine expression and push
1227 * that onto the stream. If the affine expression covers the
1228 * entire expression between parentheses, we return.
1229 * Otherwise, we assume that the affine expression is the
1230 * start of a condition and continue parsing.
1231 */
1232 static int resolve_paren_expr(struct isl_stream *s,
1233 struct vars *v, __isl_take isl_map *map, int rational)
1234 {
1235 struct isl_token *tok, *tok2;
1236 int line, col;
1237 isl_pw_aff *pwaff;
1238
1239 tok = isl_stream_next_token(s);
1240 if (!tok || tok->type != '(')
1241 goto error;
1242
1243 if (isl_stream_next_token_is(s, '('))
1244 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1245 goto error;
1246
1247 if (isl_stream_next_token_is(s, ISL_TOKEN_EXISTS) ||
1248 isl_stream_next_token_is(s, ISL_TOKEN_NOT) ||
1249 isl_stream_next_token_is(s, ISL_TOKEN_TRUE) ||
1250 isl_stream_next_token_is(s, ISL_TOKEN_FALSE) ||
1251 isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1252 map = read_disjuncts(s, v, map, rational);
1253 if (isl_stream_eat(s, ')'))
1254 goto error;
1255 tok->type = ISL_TOKEN_MAP;
1256 tok->u.map = map;
1257 isl_stream_push_token(s, tok);
1258 return 0;
1259 }
1260
1261 tok2 = isl_stream_next_token(s);
1262 if (!tok2)
1263 goto error;
1264 line = tok2->line;
1265 col = tok2->col;
1266 isl_stream_push_token(s, tok2);
1267
1268 pwaff = accept_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
1269 if (!pwaff)
1270 goto error;
1271
1272 tok2 = isl_token_new(s->ctx, line, col, 0);
1273 if (!tok2)
1274 goto error2;
1275 tok2->type = ISL_TOKEN_AFF;
1276 tok2->u.pwaff = pwaff;
1277
1278 if (isl_stream_eat_if_available(s, ')')) {
1279 isl_stream_push_token(s, tok2);
1280 isl_token_free(tok);
1281 isl_map_free(map);
1282 return 0;
1283 }
1284
1285 isl_stream_push_token(s, tok2);
1286
1287 map = read_disjuncts(s, v, map, rational);
1288 if (isl_stream_eat(s, ')'))
1289 goto error;
1290
1291 tok->type = ISL_TOKEN_MAP;
1292 tok->u.map = map;
1293 isl_stream_push_token(s, tok);
1294
1295 return 0;
1296 error2:
1297 isl_pw_aff_free(pwaff);
1298 error:
1299 isl_token_free(tok);
1300 isl_map_free(map);
1301 return -1;
1302 }
1303
1304 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1305 struct vars *v, __isl_take isl_map *map, int rational)
1306 {
1307 if (isl_stream_next_token_is(s, '('))
1308 if (resolve_paren_expr(s, v, isl_map_copy(map), rational))
1309 goto error;
1310
1311 if (isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1312 struct isl_token *tok;
1313 tok = isl_stream_next_token(s);
1314 if (!tok)
1315 goto error;
1316 isl_map_free(map);
1317 map = isl_map_copy(tok->u.map);
1318 isl_token_free(tok);
1319 return map;
1320 }
1321
1322 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1323 return read_exists(s, v, map, rational);
1324
1325 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1326 return map;
1327
1328 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1329 isl_space *dim = isl_map_get_space(map);
1330 isl_map_free(map);
1331 return isl_map_empty(dim);
1332 }
1333
1334 return add_constraint(s, v, map, rational);
1335 error:
1336 isl_map_free(map);
1337 return NULL;
1338 }
1339
1340 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1341 struct vars *v, __isl_take isl_map *map, int rational)
1342 {
1343 isl_map *res;
1344 int negate;
1345
1346 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1347 res = read_conjunct(s, v, isl_map_copy(map), rational);
1348 if (negate)
1349 res = isl_map_subtract(isl_map_copy(map), res);
1350
1351 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1352 isl_map *res_i;
1353
1354 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1355 res_i = read_conjunct(s, v, isl_map_copy(map), rational);
1356 if (negate)
1357 res = isl_map_subtract(res, res_i);
1358 else
1359 res = isl_map_intersect(res, res_i);
1360 }
1361
1362 isl_map_free(map);
1363 return res;
1364 }
1365
1366 static struct isl_map *read_disjuncts(struct isl_stream *s,
1367 struct vars *v, __isl_take isl_map *map, int rational)
1368 {
1369 isl_map *res;
1370
1371 if (isl_stream_next_token_is(s, '}')) {
1372 isl_space *dim = isl_map_get_space(map);
1373 isl_map_free(map);
1374 return isl_map_universe(dim);
1375 }
1376
1377 res = read_conjuncts(s, v, isl_map_copy(map), rational);
1378 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1379 isl_map *res_i;
1380
1381 res_i = read_conjuncts(s, v, isl_map_copy(map), rational);
1382 res = isl_map_union(res, res_i);
1383 }
1384
1385 isl_map_free(map);
1386 return res;
1387 }
1388
1389 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1390 {
1391 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1392 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1393 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1394 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1395
1396 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1397 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1398 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1399
1400 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1401 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1402 isl_basic_map_dim(bmap, isl_dim_in) +
1403 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1404 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1405
1406 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1407 return 1 + pos;
1408
1409 return 0;
1410 }
1411
1412 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1413 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1414 {
1415 int j;
1416 struct isl_token *tok;
1417 int type;
1418 int k;
1419 isl_int *c;
1420 unsigned nparam;
1421 unsigned dim;
1422
1423 if (!bmap)
1424 return NULL;
1425
1426 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1427 dim = isl_basic_map_dim(bmap, isl_dim_out);
1428
1429 tok = isl_stream_next_token(s);
1430 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1431 isl_stream_error(s, tok, "expecting coefficient");
1432 if (tok)
1433 isl_stream_push_token(s, tok);
1434 goto error;
1435 }
1436 if (!tok->on_new_line) {
1437 isl_stream_error(s, tok, "coefficient should appear on new line");
1438 isl_stream_push_token(s, tok);
1439 goto error;
1440 }
1441
1442 type = isl_int_get_si(tok->u.v);
1443 isl_token_free(tok);
1444
1445 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1446 if (type == 0) {
1447 k = isl_basic_map_alloc_equality(bmap);
1448 c = bmap->eq[k];
1449 } else {
1450 k = isl_basic_map_alloc_inequality(bmap);
1451 c = bmap->ineq[k];
1452 }
1453 if (k < 0)
1454 goto error;
1455
1456 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1457 int pos;
1458 tok = isl_stream_next_token(s);
1459 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1460 isl_stream_error(s, tok, "expecting coefficient");
1461 if (tok)
1462 isl_stream_push_token(s, tok);
1463 goto error;
1464 }
1465 if (tok->on_new_line) {
1466 isl_stream_error(s, tok,
1467 "coefficient should not appear on new line");
1468 isl_stream_push_token(s, tok);
1469 goto error;
1470 }
1471 pos = polylib_pos_to_isl_pos(bmap, j);
1472 isl_int_set(c[pos], tok->u.v);
1473 isl_token_free(tok);
1474 }
1475
1476 return bmap;
1477 error:
1478 isl_basic_map_free(bmap);
1479 return NULL;
1480 }
1481
1482 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s)
1483 {
1484 int i;
1485 struct isl_token *tok;
1486 struct isl_token *tok2;
1487 int n_row, n_col;
1488 int on_new_line;
1489 unsigned in = 0, out, local = 0;
1490 struct isl_basic_map *bmap = NULL;
1491 int nparam = 0;
1492
1493 tok = isl_stream_next_token(s);
1494 if (!tok) {
1495 isl_stream_error(s, NULL, "unexpected EOF");
1496 return NULL;
1497 }
1498 tok2 = isl_stream_next_token(s);
1499 if (!tok2) {
1500 isl_token_free(tok);
1501 isl_stream_error(s, NULL, "unexpected EOF");
1502 return NULL;
1503 }
1504 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1505 isl_stream_push_token(s, tok2);
1506 isl_stream_push_token(s, tok);
1507 isl_stream_error(s, NULL,
1508 "expecting constraint matrix dimensions");
1509 return NULL;
1510 }
1511 n_row = isl_int_get_si(tok->u.v);
1512 n_col = isl_int_get_si(tok2->u.v);
1513 on_new_line = tok2->on_new_line;
1514 isl_token_free(tok2);
1515 isl_token_free(tok);
1516 isl_assert(s->ctx, !on_new_line, return NULL);
1517 isl_assert(s->ctx, n_row >= 0, return NULL);
1518 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1519 tok = isl_stream_next_token_on_same_line(s);
1520 if (tok) {
1521 if (tok->type != ISL_TOKEN_VALUE) {
1522 isl_stream_error(s, tok,
1523 "expecting number of output dimensions");
1524 isl_stream_push_token(s, tok);
1525 goto error;
1526 }
1527 out = isl_int_get_si(tok->u.v);
1528 isl_token_free(tok);
1529
1530 tok = isl_stream_next_token_on_same_line(s);
1531 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1532 isl_stream_error(s, tok,
1533 "expecting number of input dimensions");
1534 if (tok)
1535 isl_stream_push_token(s, tok);
1536 goto error;
1537 }
1538 in = isl_int_get_si(tok->u.v);
1539 isl_token_free(tok);
1540
1541 tok = isl_stream_next_token_on_same_line(s);
1542 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1543 isl_stream_error(s, tok,
1544 "expecting number of existentials");
1545 if (tok)
1546 isl_stream_push_token(s, tok);
1547 goto error;
1548 }
1549 local = isl_int_get_si(tok->u.v);
1550 isl_token_free(tok);
1551
1552 tok = isl_stream_next_token_on_same_line(s);
1553 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1554 isl_stream_error(s, tok,
1555 "expecting number of parameters");
1556 if (tok)
1557 isl_stream_push_token(s, tok);
1558 goto error;
1559 }
1560 nparam = isl_int_get_si(tok->u.v);
1561 isl_token_free(tok);
1562 if (n_col != 1 + out + in + local + nparam + 1) {
1563 isl_stream_error(s, NULL,
1564 "dimensions don't match");
1565 goto error;
1566 }
1567 } else
1568 out = n_col - 2 - nparam;
1569 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1570 if (!bmap)
1571 return NULL;
1572
1573 for (i = 0; i < local; ++i) {
1574 int k = isl_basic_map_alloc_div(bmap);
1575 if (k < 0)
1576 goto error;
1577 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1578 }
1579
1580 for (i = 0; i < n_row; ++i)
1581 bmap = basic_map_read_polylib_constraint(s, bmap);
1582
1583 tok = isl_stream_next_token_on_same_line(s);
1584 if (tok) {
1585 isl_stream_error(s, tok, "unexpected extra token on line");
1586 isl_stream_push_token(s, tok);
1587 goto error;
1588 }
1589
1590 bmap = isl_basic_map_simplify(bmap);
1591 bmap = isl_basic_map_finalize(bmap);
1592 return bmap;
1593 error:
1594 isl_basic_map_free(bmap);
1595 return NULL;
1596 }
1597
1598 static struct isl_map *map_read_polylib(struct isl_stream *s)
1599 {
1600 struct isl_token *tok;
1601 struct isl_token *tok2;
1602 int i, n;
1603 struct isl_map *map;
1604
1605 tok = isl_stream_next_token(s);
1606 if (!tok) {
1607 isl_stream_error(s, NULL, "unexpected EOF");
1608 return NULL;
1609 }
1610 tok2 = isl_stream_next_token_on_same_line(s);
1611 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1612 isl_stream_push_token(s, tok2);
1613 isl_stream_push_token(s, tok);
1614 return isl_map_from_basic_map(basic_map_read_polylib(s));
1615 }
1616 if (tok2) {
1617 isl_stream_error(s, tok2, "unexpected token");
1618 isl_stream_push_token(s, tok2);
1619 isl_stream_push_token(s, tok);
1620 return NULL;
1621 }
1622 n = isl_int_get_si(tok->u.v);
1623 isl_token_free(tok);
1624
1625 isl_assert(s->ctx, n >= 1, return NULL);
1626
1627 map = isl_map_from_basic_map(basic_map_read_polylib(s));
1628
1629 for (i = 1; map && i < n; ++i)
1630 map = isl_map_union(map,
1631 isl_map_from_basic_map(basic_map_read_polylib(s)));
1632
1633 return map;
1634 }
1635
1636 static int optional_power(struct isl_stream *s)
1637 {
1638 int pow;
1639 struct isl_token *tok;
1640
1641 tok = isl_stream_next_token(s);
1642 if (!tok)
1643 return 1;
1644 if (tok->type != '^') {
1645 isl_stream_push_token(s, tok);
1646 return 1;
1647 }
1648 isl_token_free(tok);
1649 tok = isl_stream_next_token(s);
1650 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1651 isl_stream_error(s, tok, "expecting exponent");
1652 if (tok)
1653 isl_stream_push_token(s, tok);
1654 return 1;
1655 }
1656 pow = isl_int_get_si(tok->u.v);
1657 isl_token_free(tok);
1658 return pow;
1659 }
1660
1661 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1662 __isl_keep isl_map *map, struct vars *v);
1663
1664 static __isl_give isl_pw_qpolynomial *read_factor(struct isl_stream *s,
1665 __isl_keep isl_map *map, struct vars *v)
1666 {
1667 isl_pw_qpolynomial *pwqp;
1668 struct isl_token *tok;
1669
1670 tok = next_token(s);
1671 if (!tok) {
1672 isl_stream_error(s, NULL, "unexpected EOF");
1673 return NULL;
1674 }
1675 if (tok->type == '(') {
1676 int pow;
1677
1678 isl_token_free(tok);
1679 pwqp = read_term(s, map, v);
1680 if (!pwqp)
1681 return NULL;
1682 if (isl_stream_eat(s, ')'))
1683 goto error;
1684 pow = optional_power(s);
1685 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1686 } else if (tok->type == ISL_TOKEN_VALUE) {
1687 struct isl_token *tok2;
1688 tok2 = isl_stream_next_token(s);
1689 isl_qpolynomial *qp;
1690 if (tok2 && tok2->type == '/') {
1691 isl_token_free(tok2);
1692 tok2 = next_token(s);
1693 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1694 isl_stream_error(s, tok2, "expected denominator");
1695 isl_token_free(tok);
1696 isl_token_free(tok2);
1697 return NULL;
1698 }
1699 qp = isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map),
1700 tok->u.v, tok2->u.v);
1701 isl_token_free(tok2);
1702 } else {
1703 isl_stream_push_token(s, tok2);
1704 qp = isl_qpolynomial_cst_on_domain(isl_map_get_space(map),
1705 tok->u.v);
1706 }
1707 isl_token_free(tok);
1708 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1709 } else if (tok->type == ISL_TOKEN_INFTY) {
1710 isl_qpolynomial *qp;
1711 isl_token_free(tok);
1712 qp = isl_qpolynomial_infty_on_domain(isl_map_get_space(map));
1713 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1714 } else if (tok->type == ISL_TOKEN_NAN) {
1715 isl_qpolynomial *qp;
1716 isl_token_free(tok);
1717 qp = isl_qpolynomial_nan_on_domain(isl_map_get_space(map));
1718 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1719 } else if (tok->type == ISL_TOKEN_IDENT) {
1720 int n = v->n;
1721 int pos = vars_pos(v, tok->u.s, -1);
1722 int pow;
1723 isl_qpolynomial *qp;
1724 if (pos < 0) {
1725 isl_token_free(tok);
1726 return NULL;
1727 }
1728 if (pos >= n) {
1729 vars_drop(v, v->n - n);
1730 isl_stream_error(s, tok, "unknown identifier");
1731 isl_token_free(tok);
1732 return NULL;
1733 }
1734 isl_token_free(tok);
1735 pow = optional_power(s);
1736 qp = isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map), pos, pow);
1737 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1738 } else if (tok->type == '[') {
1739 isl_pw_aff *pwaff;
1740 int pow;
1741
1742 isl_stream_push_token(s, tok);
1743 pwaff = accept_div(s, isl_map_get_space(map), v);
1744 pow = optional_power(s);
1745 pwqp = isl_pw_qpolynomial_from_pw_aff(pwaff);
1746 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1747 } else if (tok->type == '-') {
1748 isl_token_free(tok);
1749 pwqp = read_factor(s, map, v);
1750 pwqp = isl_pw_qpolynomial_neg(pwqp);
1751 } else {
1752 isl_stream_error(s, tok, "unexpected isl_token");
1753 isl_stream_push_token(s, tok);
1754 return NULL;
1755 }
1756
1757 if (isl_stream_eat_if_available(s, '*') ||
1758 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1759 isl_pw_qpolynomial *pwqp2;
1760
1761 pwqp2 = read_factor(s, map, v);
1762 pwqp = isl_pw_qpolynomial_mul(pwqp, pwqp2);
1763 }
1764
1765 return pwqp;
1766 error:
1767 isl_pw_qpolynomial_free(pwqp);
1768 return NULL;
1769 }
1770
1771 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1772 __isl_keep isl_map *map, struct vars *v)
1773 {
1774 struct isl_token *tok;
1775 isl_pw_qpolynomial *pwqp;
1776
1777 pwqp = read_factor(s, map, v);
1778
1779 for (;;) {
1780 tok = next_token(s);
1781 if (!tok)
1782 return pwqp;
1783
1784 if (tok->type == '+') {
1785 isl_pw_qpolynomial *pwqp2;
1786
1787 isl_token_free(tok);
1788 pwqp2 = read_factor(s, map, v);
1789 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1790 } else if (tok->type == '-') {
1791 isl_pw_qpolynomial *pwqp2;
1792
1793 isl_token_free(tok);
1794 pwqp2 = read_factor(s, map, v);
1795 pwqp = isl_pw_qpolynomial_sub(pwqp, pwqp2);
1796 } else if (tok->type == ISL_TOKEN_VALUE &&
1797 isl_int_is_neg(tok->u.v)) {
1798 isl_pw_qpolynomial *pwqp2;
1799
1800 isl_stream_push_token(s, tok);
1801 pwqp2 = read_factor(s, map, v);
1802 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1803 } else {
1804 isl_stream_push_token(s, tok);
1805 break;
1806 }
1807 }
1808
1809 return pwqp;
1810 }
1811
1812 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1813 __isl_take isl_map *map, struct vars *v, int rational)
1814 {
1815 struct isl_token *tok;
1816
1817 tok = isl_stream_next_token(s);
1818 if (!tok) {
1819 isl_stream_error(s, NULL, "unexpected EOF");
1820 goto error;
1821 }
1822 if (tok->type == ':' ||
1823 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1824 isl_token_free(tok);
1825 map = read_disjuncts(s, v, map, rational);
1826 } else
1827 isl_stream_push_token(s, tok);
1828
1829 return map;
1830 error:
1831 isl_map_free(map);
1832 return NULL;
1833 }
1834
1835 static struct isl_obj obj_read_poly(struct isl_stream *s,
1836 __isl_take isl_map *map, struct vars *v, int n)
1837 {
1838 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1839 isl_pw_qpolynomial *pwqp;
1840 struct isl_set *set;
1841
1842 pwqp = read_term(s, map, v);
1843 map = read_optional_disjuncts(s, map, v, 0);
1844 set = isl_map_range(map);
1845
1846 pwqp = isl_pw_qpolynomial_intersect_domain(pwqp, set);
1847
1848 vars_drop(v, v->n - n);
1849
1850 obj.v = pwqp;
1851 return obj;
1852 }
1853
1854 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1855 __isl_take isl_set *set, struct vars *v, int n)
1856 {
1857 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1858 isl_pw_qpolynomial *pwqp;
1859 isl_pw_qpolynomial_fold *pwf = NULL;
1860
1861 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1862 return obj_read_poly(s, set, v, n);
1863
1864 if (isl_stream_eat(s, '('))
1865 goto error;
1866
1867 pwqp = read_term(s, set, v);
1868 pwf = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max, pwqp);
1869
1870 while (isl_stream_eat_if_available(s, ',')) {
1871 isl_pw_qpolynomial_fold *pwf_i;
1872 pwqp = read_term(s, set, v);
1873 pwf_i = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max,
1874 pwqp);
1875 pwf = isl_pw_qpolynomial_fold_fold(pwf, pwf_i);
1876 }
1877
1878 if (isl_stream_eat(s, ')'))
1879 goto error;
1880
1881 set = read_optional_disjuncts(s, set, v, 0);
1882 pwf = isl_pw_qpolynomial_fold_intersect_domain(pwf, set);
1883
1884 vars_drop(v, v->n - n);
1885
1886 obj.v = pwf;
1887 return obj;
1888 error:
1889 isl_set_free(set);
1890 isl_pw_qpolynomial_fold_free(pwf);
1891 obj.type = isl_obj_none;
1892 return obj;
1893 }
1894
1895 static int is_rational(struct isl_stream *s)
1896 {
1897 struct isl_token *tok;
1898
1899 tok = isl_stream_next_token(s);
1900 if (!tok)
1901 return 0;
1902 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1903 isl_token_free(tok);
1904 isl_stream_eat(s, ':');
1905 return 1;
1906 }
1907
1908 isl_stream_push_token(s, tok);
1909
1910 return 0;
1911 }
1912
1913 static struct isl_obj obj_read_body(struct isl_stream *s,
1914 __isl_take isl_map *map, struct vars *v)
1915 {
1916 struct isl_token *tok;
1917 struct isl_obj obj = { isl_obj_set, NULL };
1918 int n = v->n;
1919 int rational;
1920
1921 rational = is_rational(s);
1922 if (rational)
1923 map = isl_map_set_rational(map);
1924
1925 if (isl_stream_next_token_is(s, ':')) {
1926 obj.type = isl_obj_set;
1927 obj.v = read_optional_disjuncts(s, map, v, rational);
1928 return obj;
1929 }
1930
1931 if (!next_is_tuple(s))
1932 return obj_read_poly_or_fold(s, map, v, n);
1933
1934 map = read_map_tuple(s, map, isl_dim_in, v, rational, 0);
1935 if (!map)
1936 goto error;
1937 tok = isl_stream_next_token(s);
1938 if (!tok)
1939 goto error;
1940 if (tok->type == ISL_TOKEN_TO) {
1941 obj.type = isl_obj_map;
1942 isl_token_free(tok);
1943 if (!next_is_tuple(s)) {
1944 isl_set *set = isl_map_domain(map);
1945 return obj_read_poly_or_fold(s, set, v, n);
1946 }
1947 map = read_map_tuple(s, map, isl_dim_out, v, rational, 0);
1948 if (!map)
1949 goto error;
1950 } else {
1951 map = isl_map_domain(map);
1952 isl_stream_push_token(s, tok);
1953 }
1954
1955 map = read_optional_disjuncts(s, map, v, rational);
1956
1957 vars_drop(v, v->n - n);
1958
1959 obj.v = map;
1960 return obj;
1961 error:
1962 isl_map_free(map);
1963 obj.type = isl_obj_none;
1964 return obj;
1965 }
1966
1967 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1968 {
1969 if (obj.type == isl_obj_map) {
1970 obj.v = isl_union_map_from_map(obj.v);
1971 obj.type = isl_obj_union_map;
1972 } else if (obj.type == isl_obj_set) {
1973 obj.v = isl_union_set_from_set(obj.v);
1974 obj.type = isl_obj_union_set;
1975 } else if (obj.type == isl_obj_pw_qpolynomial) {
1976 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1977 obj.type = isl_obj_union_pw_qpolynomial;
1978 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1979 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1980 obj.type = isl_obj_union_pw_qpolynomial_fold;
1981 } else
1982 isl_assert(ctx, 0, goto error);
1983 return obj;
1984 error:
1985 obj.type->free(obj.v);
1986 obj.type = isl_obj_none;
1987 return obj;
1988 }
1989
1990 static struct isl_obj obj_add(struct isl_ctx *ctx,
1991 struct isl_obj obj1, struct isl_obj obj2)
1992 {
1993 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1994 obj1 = to_union(ctx, obj1);
1995 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1996 obj2 = to_union(ctx, obj2);
1997 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1998 obj1 = to_union(ctx, obj1);
1999 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
2000 obj2 = to_union(ctx, obj2);
2001 if (obj1.type == isl_obj_pw_qpolynomial &&
2002 obj2.type == isl_obj_union_pw_qpolynomial)
2003 obj1 = to_union(ctx, obj1);
2004 if (obj1.type == isl_obj_union_pw_qpolynomial &&
2005 obj2.type == isl_obj_pw_qpolynomial)
2006 obj2 = to_union(ctx, obj2);
2007 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2008 obj2.type == isl_obj_union_pw_qpolynomial_fold)
2009 obj1 = to_union(ctx, obj1);
2010 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
2011 obj2.type == isl_obj_pw_qpolynomial_fold)
2012 obj2 = to_union(ctx, obj2);
2013 isl_assert(ctx, obj1.type == obj2.type, goto error);
2014 if (obj1.type == isl_obj_map && !isl_map_has_equal_space(obj1.v, obj2.v)) {
2015 obj1 = to_union(ctx, obj1);
2016 obj2 = to_union(ctx, obj2);
2017 }
2018 if (obj1.type == isl_obj_set && !isl_set_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_pw_qpolynomial &&
2023 !isl_pw_qpolynomial_has_equal_space(obj1.v, obj2.v)) {
2024 obj1 = to_union(ctx, obj1);
2025 obj2 = to_union(ctx, obj2);
2026 }
2027 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2028 !isl_pw_qpolynomial_fold_has_equal_space(obj1.v, obj2.v)) {
2029 obj1 = to_union(ctx, obj1);
2030 obj2 = to_union(ctx, obj2);
2031 }
2032 obj1.v = obj1.type->add(obj1.v, obj2.v);
2033 return obj1;
2034 error:
2035 obj1.type->free(obj1.v);
2036 obj2.type->free(obj2.v);
2037 obj1.type = isl_obj_none;
2038 obj1.v = NULL;
2039 return obj1;
2040 }
2041
2042 static struct isl_obj obj_read(struct isl_stream *s)
2043 {
2044 isl_map *map = NULL;
2045 struct isl_token *tok;
2046 struct vars *v = NULL;
2047 struct isl_obj obj = { isl_obj_set, NULL };
2048
2049 tok = next_token(s);
2050 if (!tok) {
2051 isl_stream_error(s, NULL, "unexpected EOF");
2052 goto error;
2053 }
2054 if (tok->type == ISL_TOKEN_VALUE) {
2055 struct isl_token *tok2;
2056 struct isl_map *map;
2057
2058 tok2 = isl_stream_next_token(s);
2059 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
2060 isl_int_is_neg(tok2->u.v)) {
2061 if (tok2)
2062 isl_stream_push_token(s, tok2);
2063 obj.type = isl_obj_int;
2064 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
2065 isl_token_free(tok);
2066 return obj;
2067 }
2068 isl_stream_push_token(s, tok2);
2069 isl_stream_push_token(s, tok);
2070 map = map_read_polylib(s);
2071 if (!map)
2072 goto error;
2073 if (isl_map_may_be_set(map))
2074 obj.v = isl_map_range(map);
2075 else {
2076 obj.type = isl_obj_map;
2077 obj.v = map;
2078 }
2079 return obj;
2080 }
2081 v = vars_new(s->ctx);
2082 if (!v) {
2083 isl_stream_push_token(s, tok);
2084 goto error;
2085 }
2086 map = isl_map_universe(isl_space_params_alloc(s->ctx, 0));
2087 if (tok->type == '[') {
2088 isl_stream_push_token(s, tok);
2089 map = read_map_tuple(s, map, isl_dim_param, v, 0, 0);
2090 if (!map)
2091 goto error;
2092 tok = isl_stream_next_token(s);
2093 if (!tok || tok->type != ISL_TOKEN_TO) {
2094 isl_stream_error(s, tok, "expecting '->'");
2095 if (tok)
2096 isl_stream_push_token(s, tok);
2097 goto error;
2098 }
2099 isl_token_free(tok);
2100 tok = isl_stream_next_token(s);
2101 }
2102 if (!tok || tok->type != '{') {
2103 isl_stream_error(s, tok, "expecting '{'");
2104 if (tok)
2105 isl_stream_push_token(s, tok);
2106 goto error;
2107 }
2108 isl_token_free(tok);
2109
2110 tok = isl_stream_next_token(s);
2111 if (!tok)
2112 ;
2113 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
2114 isl_token_free(tok);
2115 if (isl_stream_eat(s, '='))
2116 goto error;
2117 map = read_map_tuple(s, map, isl_dim_param, v, 0, 1);
2118 if (!map)
2119 goto error;
2120 } else if (tok->type == '}') {
2121 obj.type = isl_obj_union_set;
2122 obj.v = isl_union_set_empty(isl_map_get_space(map));
2123 isl_token_free(tok);
2124 goto done;
2125 } else
2126 isl_stream_push_token(s, tok);
2127
2128 for (;;) {
2129 struct isl_obj o;
2130 tok = NULL;
2131 o = obj_read_body(s, isl_map_copy(map), v);
2132 if (o.type == isl_obj_none || !o.v)
2133 goto error;
2134 if (!obj.v)
2135 obj = o;
2136 else {
2137 obj = obj_add(s->ctx, obj, o);
2138 if (obj.type == isl_obj_none || !obj.v)
2139 goto error;
2140 }
2141 tok = isl_stream_next_token(s);
2142 if (!tok || tok->type != ';')
2143 break;
2144 isl_token_free(tok);
2145 if (isl_stream_next_token_is(s, '}')) {
2146 tok = isl_stream_next_token(s);
2147 break;
2148 }
2149 }
2150
2151 if (tok && tok->type == '}') {
2152 isl_token_free(tok);
2153 } else {
2154 isl_stream_error(s, tok, "unexpected isl_token");
2155 if (tok)
2156 isl_token_free(tok);
2157 goto error;
2158 }
2159 done:
2160 vars_free(v);
2161 isl_map_free(map);
2162
2163 return obj;
2164 error:
2165 isl_map_free(map);
2166 obj.type->free(obj.v);
2167 if (v)
2168 vars_free(v);
2169 obj.v = NULL;
2170 return obj;
2171 }
2172
2173 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
2174 {
2175 return obj_read(s);
2176 }
2177
2178 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s)
2179 {
2180 struct isl_obj obj;
2181
2182 obj = obj_read(s);
2183 if (obj.v)
2184 isl_assert(s->ctx, obj.type == isl_obj_map ||
2185 obj.type == isl_obj_set, goto error);
2186
2187 if (obj.type == isl_obj_set)
2188 obj.v = isl_map_from_range(obj.v);
2189
2190 return obj.v;
2191 error:
2192 obj.type->free(obj.v);
2193 return NULL;
2194 }
2195
2196 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s)
2197 {
2198 struct isl_obj obj;
2199
2200 obj = obj_read(s);
2201 if (obj.v) {
2202 if (obj.type == isl_obj_map && isl_map_may_be_set(obj.v)) {
2203 obj.v = isl_map_range(obj.v);
2204 obj.type = isl_obj_set;
2205 }
2206 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2207 }
2208
2209 return obj.v;
2210 error:
2211 obj.type->free(obj.v);
2212 return NULL;
2213 }
2214
2215 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2216 {
2217 struct isl_obj obj;
2218
2219 obj = obj_read(s);
2220 if (obj.type == isl_obj_map) {
2221 obj.type = isl_obj_union_map;
2222 obj.v = isl_union_map_from_map(obj.v);
2223 }
2224 if (obj.type == isl_obj_set) {
2225 obj.type = isl_obj_union_set;
2226 obj.v = isl_union_set_from_set(obj.v);
2227 }
2228 if (obj.v && obj.type == isl_obj_union_set &&
2229 isl_union_set_is_empty(obj.v))
2230 obj.type = isl_obj_union_map;
2231 if (obj.v && obj.type != isl_obj_union_map)
2232 isl_die(s->ctx, isl_error_invalid, "invalid input", goto error);
2233
2234 return obj.v;
2235 error:
2236 obj.type->free(obj.v);
2237 return NULL;
2238 }
2239
2240 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2241 {
2242 struct isl_obj obj;
2243
2244 obj = obj_read(s);
2245 if (obj.type == isl_obj_set) {
2246 obj.type = isl_obj_union_set;
2247 obj.v = isl_union_set_from_set(obj.v);
2248 }
2249 if (obj.v)
2250 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2251
2252 return obj.v;
2253 error:
2254 obj.type->free(obj.v);
2255 return NULL;
2256 }
2257
2258 static __isl_give isl_basic_map *basic_map_read(struct isl_stream *s)
2259 {
2260 struct isl_obj obj;
2261 struct isl_map *map;
2262 struct isl_basic_map *bmap;
2263
2264 obj = obj_read(s);
2265 map = obj.v;
2266 if (!map)
2267 return NULL;
2268
2269 isl_assert(map->ctx, map->n <= 1, goto error);
2270
2271 if (map->n == 0)
2272 bmap = isl_basic_map_empty_like_map(map);
2273 else
2274 bmap = isl_basic_map_copy(map->p[0]);
2275
2276 isl_map_free(map);
2277
2278 return bmap;
2279 error:
2280 isl_map_free(map);
2281 return NULL;
2282 }
2283
2284 static __isl_give isl_basic_set *basic_set_read(struct isl_stream *s)
2285 {
2286 isl_basic_map *bmap;
2287 bmap = basic_map_read(s);
2288 if (!bmap)
2289 return NULL;
2290 if (!isl_basic_map_may_be_set(bmap))
2291 isl_die(s->ctx, isl_error_invalid,
2292 "input is not a set", goto error);
2293 return isl_basic_map_range(bmap);
2294 error:
2295 isl_basic_map_free(bmap);
2296 return NULL;
2297 }
2298
2299 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2300 FILE *input)
2301 {
2302 struct isl_basic_map *bmap;
2303 struct isl_stream *s = isl_stream_new_file(ctx, input);
2304 if (!s)
2305 return NULL;
2306 bmap = basic_map_read(s);
2307 isl_stream_free(s);
2308 return bmap;
2309 }
2310
2311 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2312 FILE *input)
2313 {
2314 isl_basic_set *bset;
2315 struct isl_stream *s = isl_stream_new_file(ctx, input);
2316 if (!s)
2317 return NULL;
2318 bset = basic_set_read(s);
2319 isl_stream_free(s);
2320 return bset;
2321 }
2322
2323 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2324 const char *str)
2325 {
2326 struct isl_basic_map *bmap;
2327 struct isl_stream *s = isl_stream_new_str(ctx, str);
2328 if (!s)
2329 return NULL;
2330 bmap = basic_map_read(s);
2331 isl_stream_free(s);
2332 return bmap;
2333 }
2334
2335 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2336 const char *str)
2337 {
2338 isl_basic_set *bset;
2339 struct isl_stream *s = isl_stream_new_str(ctx, str);
2340 if (!s)
2341 return NULL;
2342 bset = basic_set_read(s);
2343 isl_stream_free(s);
2344 return bset;
2345 }
2346
2347 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2348 FILE *input)
2349 {
2350 struct isl_map *map;
2351 struct isl_stream *s = isl_stream_new_file(ctx, input);
2352 if (!s)
2353 return NULL;
2354 map = isl_stream_read_map(s);
2355 isl_stream_free(s);
2356 return map;
2357 }
2358
2359 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2360 const char *str)
2361 {
2362 struct isl_map *map;
2363 struct isl_stream *s = isl_stream_new_str(ctx, str);
2364 if (!s)
2365 return NULL;
2366 map = isl_stream_read_map(s);
2367 isl_stream_free(s);
2368 return map;
2369 }
2370
2371 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2372 FILE *input)
2373 {
2374 isl_set *set;
2375 struct isl_stream *s = isl_stream_new_file(ctx, input);
2376 if (!s)
2377 return NULL;
2378 set = isl_stream_read_set(s);
2379 isl_stream_free(s);
2380 return set;
2381 }
2382
2383 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2384 const char *str)
2385 {
2386 isl_set *set;
2387 struct isl_stream *s = isl_stream_new_str(ctx, str);
2388 if (!s)
2389 return NULL;
2390 set = isl_stream_read_set(s);
2391 isl_stream_free(s);
2392 return set;
2393 }
2394
2395 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2396 FILE *input)
2397 {
2398 isl_union_map *umap;
2399 struct isl_stream *s = isl_stream_new_file(ctx, input);
2400 if (!s)
2401 return NULL;
2402 umap = isl_stream_read_union_map(s);
2403 isl_stream_free(s);
2404 return umap;
2405 }
2406
2407 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2408 const char *str)
2409 {
2410 isl_union_map *umap;
2411 struct isl_stream *s = isl_stream_new_str(ctx, str);
2412 if (!s)
2413 return NULL;
2414 umap = isl_stream_read_union_map(s);
2415 isl_stream_free(s);
2416 return umap;
2417 }
2418
2419 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2420 FILE *input)
2421 {
2422 isl_union_set *uset;
2423 struct isl_stream *s = isl_stream_new_file(ctx, input);
2424 if (!s)
2425 return NULL;
2426 uset = isl_stream_read_union_set(s);
2427 isl_stream_free(s);
2428 return uset;
2429 }
2430
2431 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2432 const char *str)
2433 {
2434 isl_union_set *uset;
2435 struct isl_stream *s = isl_stream_new_str(ctx, str);
2436 if (!s)
2437 return NULL;
2438 uset = isl_stream_read_union_set(s);
2439 isl_stream_free(s);
2440 return uset;
2441 }
2442
2443 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2444 {
2445 struct isl_vec *vec = NULL;
2446 struct isl_token *tok;
2447 unsigned size;
2448 int j;
2449
2450 tok = isl_stream_next_token(s);
2451 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2452 isl_stream_error(s, tok, "expecting vector length");
2453 goto error;
2454 }
2455
2456 size = isl_int_get_si(tok->u.v);
2457 isl_token_free(tok);
2458
2459 vec = isl_vec_alloc(s->ctx, size);
2460
2461 for (j = 0; j < size; ++j) {
2462 tok = isl_stream_next_token(s);
2463 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2464 isl_stream_error(s, tok, "expecting constant value");
2465 goto error;
2466 }
2467 isl_int_set(vec->el[j], tok->u.v);
2468 isl_token_free(tok);
2469 }
2470
2471 return vec;
2472 error:
2473 isl_token_free(tok);
2474 isl_vec_free(vec);
2475 return NULL;
2476 }
2477
2478 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2479 {
2480 return isl_vec_read_polylib(s);
2481 }
2482
2483 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2484 {
2485 isl_vec *v;
2486 struct isl_stream *s = isl_stream_new_file(ctx, input);
2487 if (!s)
2488 return NULL;
2489 v = vec_read(s);
2490 isl_stream_free(s);
2491 return v;
2492 }
2493
2494 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2495 struct isl_stream *s)
2496 {
2497 struct isl_obj obj;
2498
2499 obj = obj_read(s);
2500 if (obj.v)
2501 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2502 goto error);
2503
2504 return obj.v;
2505 error:
2506 obj.type->free(obj.v);
2507 return NULL;
2508 }
2509
2510 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2511 const char *str)
2512 {
2513 isl_pw_qpolynomial *pwqp;
2514 struct isl_stream *s = isl_stream_new_str(ctx, str);
2515 if (!s)
2516 return NULL;
2517 pwqp = isl_stream_read_pw_qpolynomial(s);
2518 isl_stream_free(s);
2519 return pwqp;
2520 }
2521
2522 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_file(isl_ctx *ctx,
2523 FILE *input)
2524 {
2525 isl_pw_qpolynomial *pwqp;
2526 struct isl_stream *s = isl_stream_new_file(ctx, input);
2527 if (!s)
2528 return NULL;
2529 pwqp = isl_stream_read_pw_qpolynomial(s);
2530 isl_stream_free(s);
2531 return pwqp;
2532 }
2533
2534 /* Is the next token an identifer not in "v"?
2535 */
2536 static int next_is_fresh_ident(struct isl_stream *s, struct vars *v)
2537 {
2538 int n = v->n;
2539 int fresh;
2540 struct isl_token *tok;
2541
2542 tok = isl_stream_next_token(s);
2543 if (!tok)
2544 return 0;
2545 fresh = tok->type == ISL_TOKEN_IDENT && vars_pos(v, tok->u.s, -1) >= n;
2546 isl_stream_push_token(s, tok);
2547
2548 vars_drop(v, v->n - n);
2549
2550 return fresh;
2551 }
2552
2553 /* First read the domain of the affine expression, which may be
2554 * a parameter space or a set.
2555 * The tricky part is that we don't know if the domain is a set or not,
2556 * so when we are trying to read the domain, we may actually be reading
2557 * the affine expression itself (defined on a parameter domains)
2558 * If the tuple we are reading is named, we assume it's the domain.
2559 * Also, if inside the tuple, the first thing we find is a nested tuple
2560 * or a new identifier, we again assume it's the domain.
2561 * Otherwise, we assume we are reading an affine expression.
2562 */
2563 static __isl_give isl_set *read_aff_domain(struct isl_stream *s,
2564 __isl_take isl_set *dom, struct vars *v)
2565 {
2566 struct isl_token *tok;
2567
2568 tok = isl_stream_next_token(s);
2569 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
2570 isl_stream_push_token(s, tok);
2571 return read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2572 }
2573 if (!tok || tok->type != '[') {
2574 isl_stream_error(s, tok, "expecting '['");
2575 goto error;
2576 }
2577 if (next_is_tuple(s) || next_is_fresh_ident(s, v)) {
2578 isl_stream_push_token(s, tok);
2579 dom = read_map_tuple(s, dom, isl_dim_set, v, 1, 0);
2580 } else
2581 isl_stream_push_token(s, tok);
2582
2583 return dom;
2584 error:
2585 if (tok)
2586 isl_stream_push_token(s, tok);
2587 isl_set_free(dom);
2588 return NULL;
2589 }
2590
2591 /* Read an affine expression from "s".
2592 */
2593 __isl_give isl_aff *isl_stream_read_aff(struct isl_stream *s)
2594 {
2595 isl_aff *aff;
2596 isl_multi_aff *ma;
2597
2598 ma = isl_stream_read_multi_aff(s);
2599 if (!ma)
2600 return NULL;
2601 if (isl_multi_aff_dim(ma, isl_dim_out) != 1)
2602 isl_die(s->ctx, isl_error_invalid,
2603 "expecting single affine expression",
2604 goto error);
2605
2606 aff = isl_multi_aff_get_aff(ma, 0);
2607 isl_multi_aff_free(ma);
2608 return aff;
2609 error:
2610 isl_multi_aff_free(ma);
2611 return NULL;
2612 }
2613
2614 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2615 */
2616 static __isl_give isl_pw_aff *read_pw_aff_with_dom(struct isl_stream *s,
2617 __isl_take isl_set *dom, struct vars *v)
2618 {
2619 isl_pw_aff *pwaff = NULL;
2620
2621 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2622 goto error;
2623
2624 if (isl_stream_eat(s, '['))
2625 goto error;
2626
2627 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2628
2629 if (isl_stream_eat(s, ']'))
2630 goto error;
2631
2632 dom = read_optional_disjuncts(s, dom, v, 0);
2633 pwaff = isl_pw_aff_intersect_domain(pwaff, dom);
2634
2635 return pwaff;
2636 error:
2637 isl_set_free(dom);
2638 isl_pw_aff_free(pwaff);
2639 return NULL;
2640 }
2641
2642 __isl_give isl_pw_aff *isl_stream_read_pw_aff(struct isl_stream *s)
2643 {
2644 struct vars *v;
2645 isl_set *dom = NULL;
2646 isl_set *aff_dom;
2647 isl_pw_aff *pa = NULL;
2648 int n;
2649
2650 v = vars_new(s->ctx);
2651 if (!v)
2652 return NULL;
2653
2654 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2655 if (next_is_tuple(s)) {
2656 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2657 if (isl_stream_eat(s, ISL_TOKEN_TO))
2658 goto error;
2659 }
2660 if (isl_stream_eat(s, '{'))
2661 goto error;
2662
2663 n = v->n;
2664 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2665 pa = read_pw_aff_with_dom(s, aff_dom, v);
2666 vars_drop(v, v->n - n);
2667
2668 while (isl_stream_eat_if_available(s, ';')) {
2669 isl_pw_aff *pa_i;
2670
2671 n = v->n;
2672 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2673 pa_i = read_pw_aff_with_dom(s, aff_dom, v);
2674 vars_drop(v, v->n - n);
2675
2676 pa = isl_pw_aff_union_add(pa, pa_i);
2677 }
2678
2679 if (isl_stream_eat(s, '}'))
2680 goto error;
2681
2682 vars_free(v);
2683 isl_set_free(dom);
2684 return pa;
2685 error:
2686 vars_free(v);
2687 isl_set_free(dom);
2688 isl_pw_aff_free(pa);
2689 return NULL;
2690 }
2691
2692 __isl_give isl_aff *isl_aff_read_from_str(isl_ctx *ctx, const char *str)
2693 {
2694 isl_aff *aff;
2695 struct isl_stream *s = isl_stream_new_str(ctx, str);
2696 if (!s)
2697 return NULL;
2698 aff = isl_stream_read_aff(s);
2699 isl_stream_free(s);
2700 return aff;
2701 }
2702
2703 __isl_give isl_pw_aff *isl_pw_aff_read_from_str(isl_ctx *ctx, const char *str)
2704 {
2705 isl_pw_aff *pa;
2706 struct isl_stream *s = isl_stream_new_str(ctx, str);
2707 if (!s)
2708 return NULL;
2709 pa = isl_stream_read_pw_aff(s);
2710 isl_stream_free(s);
2711 return pa;
2712 }
2713
2714 /* Read an isl_pw_multi_aff from "s".
2715 * We currently read a generic object and if it turns out to be a set or
2716 * a map, we convert that to an isl_pw_multi_aff.
2717 * It would be more efficient if we were to construct the isl_pw_multi_aff
2718 * directly.
2719 */
2720 __isl_give isl_pw_multi_aff *isl_stream_read_pw_multi_aff(struct isl_stream *s)
2721 {
2722 struct isl_obj obj;
2723
2724 obj = obj_read(s);
2725 if (!obj.v)
2726 return NULL;
2727
2728 if (obj.type == isl_obj_map)
2729 return isl_pw_multi_aff_from_map(obj.v);
2730 if (obj.type == isl_obj_set)
2731 return isl_pw_multi_aff_from_set(obj.v);
2732
2733 obj.type->free(obj.v);
2734 isl_die(s->ctx, isl_error_invalid, "unexpected object type",
2735 return NULL);
2736 }
2737
2738 __isl_give isl_pw_multi_aff *isl_pw_multi_aff_read_from_str(isl_ctx *ctx,
2739 const char *str)
2740 {
2741 isl_pw_multi_aff *pma;
2742 struct isl_stream *s = isl_stream_new_str(ctx, str);
2743 if (!s)
2744 return NULL;
2745 pma = isl_stream_read_pw_multi_aff(s);
2746 isl_stream_free(s);
2747 return pma;
2748 }
2749
2750 /* Assuming "pa" represents a single affine expression defined on a universe
2751 * domain, extract this affine expression.
2752 */
2753 static __isl_give isl_aff *aff_from_pw_aff(__isl_take isl_pw_aff *pa)
2754 {
2755 isl_aff *aff;
2756
2757 if (!pa)
2758 return NULL;
2759 if (pa->n != 1)
2760 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2761 "expecting single affine expression",
2762 goto error);
2763 if (!isl_set_plain_is_universe(pa->p[0].set))
2764 isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
2765 "expecting universe domain",
2766 goto error);
2767
2768 aff = isl_aff_copy(pa->p[0].aff);
2769 isl_pw_aff_free(pa);
2770 return aff;
2771 error:
2772 isl_pw_aff_free(pa);
2773 return NULL;
2774 }
2775
2776 /* Read a multi-affine expression from "s".
2777 * If the multi-affine expression has a domain, then then tuple
2778 * representing this domain cannot involve any affine expressions.
2779 * The tuple representing the actual expressions needs to consist
2780 * of only affine expressions. Moreover, these expressions can
2781 * only depend on parameters and input dimensions and not on other
2782 * output dimensions.
2783 */
2784 __isl_give isl_multi_aff *isl_stream_read_multi_aff(struct isl_stream *s)
2785 {
2786 struct vars *v;
2787 isl_set *dom = NULL;
2788 isl_multi_pw_aff *tuple = NULL;
2789 int dim, i, n;
2790 isl_space *space, *dom_space;
2791 isl_multi_aff *ma = NULL;
2792
2793 v = vars_new(s->ctx);
2794 if (!v)
2795 return NULL;
2796
2797 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2798 if (next_is_tuple(s)) {
2799 dom = read_map_tuple(s, dom, isl_dim_param, v, 1, 0);
2800 if (isl_stream_eat(s, ISL_TOKEN_TO))
2801 goto error;
2802 }
2803 if (!isl_set_plain_is_universe(dom))
2804 isl_die(s->ctx, isl_error_invalid,
2805 "expecting universe parameter domain", goto error);
2806 if (isl_stream_eat(s, '{'))
2807 goto error;
2808
2809 tuple = read_tuple(s, v, 0, 0);
2810 if (!tuple)
2811 goto error;
2812 if (isl_stream_eat_if_available(s, ISL_TOKEN_TO)) {
2813 isl_set *set;
2814 isl_space *space;
2815 int has_expr;
2816
2817 has_expr = tuple_has_expr(tuple);
2818 if (has_expr < 0)
2819 goto error;
2820 if (has_expr)
2821 isl_die(s->ctx, isl_error_invalid,
2822 "expecting universe domain", goto error);
2823 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2824 set = isl_set_universe(space);
2825 dom = isl_set_intersect_params(set, dom);
2826 isl_multi_pw_aff_free(tuple);
2827 tuple = read_tuple(s, v, 0, 0);
2828 if (!tuple)
2829 goto error;
2830 }
2831
2832 if (isl_stream_eat(s, '}'))
2833 goto error;
2834
2835 n = isl_multi_pw_aff_dim(tuple, isl_dim_out);
2836 dim = isl_set_dim(dom, isl_dim_all);
2837 dom_space = isl_set_get_space(dom);
2838 space = isl_space_range(isl_multi_pw_aff_get_space(tuple));
2839 space = isl_space_align_params(space, isl_space_copy(dom_space));
2840 if (!isl_space_is_params(dom_space))
2841 space = isl_space_map_from_domain_and_range(
2842 isl_space_copy(dom_space), space);
2843 isl_space_free(dom_space);
2844 ma = isl_multi_aff_alloc(space);
2845
2846 for (i = 0; i < n; ++i) {
2847 isl_pw_aff *pa;
2848 isl_aff *aff;
2849 pa = isl_multi_pw_aff_get_pw_aff(tuple, i);
2850 aff = aff_from_pw_aff(pa);
2851 if (!aff)
2852 goto error;
2853 if (isl_aff_involves_dims(aff, isl_dim_in, dim, i + 1)) {
2854 isl_aff_free(aff);
2855 isl_die(s->ctx, isl_error_invalid,
2856 "not an affine expression", goto error);
2857 }
2858 aff = isl_aff_drop_dims(aff, isl_dim_in, dim, n);
2859 space = isl_multi_aff_get_domain_space(ma);
2860 aff = isl_aff_reset_domain_space(aff, space);
2861 ma = isl_multi_aff_set_aff(ma, i, aff);
2862 }
2863
2864 isl_multi_pw_aff_free(tuple);
2865 vars_free(v);
2866 isl_set_free(dom);
2867 return ma;
2868 error:
2869 isl_multi_pw_aff_free(tuple);
2870 vars_free(v);
2871 isl_set_free(dom);
2872 isl_multi_aff_free(ma);
2873 return NULL;
2874 }
2875
2876 __isl_give isl_multi_aff *isl_multi_aff_read_from_str(isl_ctx *ctx,
2877 const char *str)
2878 {
2879 isl_multi_aff *maff;
2880 struct isl_stream *s = isl_stream_new_str(ctx, str);
2881 if (!s)
2882 return NULL;
2883 maff = isl_stream_read_multi_aff(s);
2884 isl_stream_free(s);
2885 return maff;
2886 }
2887
2888 __isl_give isl_union_pw_qpolynomial *isl_stream_read_union_pw_qpolynomial(
2889 struct isl_stream *s)
2890 {
2891 struct isl_obj obj;
2892
2893 obj = obj_read(s);
2894 if (obj.type == isl_obj_pw_qpolynomial) {
2895 obj.type = isl_obj_union_pw_qpolynomial;
2896 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
2897 }
2898 if (obj.v)
2899 isl_assert(s->ctx, obj.type == isl_obj_union_pw_qpolynomial,
2900 goto error);
2901
2902 return obj.v;
2903 error:
2904 obj.type->free(obj.v);
2905 return NULL;
2906 }
2907
2908 __isl_give isl_union_pw_qpolynomial *isl_union_pw_qpolynomial_read_from_str(
2909 isl_ctx *ctx, const char *str)
2910 {
2911 isl_union_pw_qpolynomial *upwqp;
2912 struct isl_stream *s = isl_stream_new_str(ctx, str);
2913 if (!s)
2914 return NULL;
2915 upwqp = isl_stream_read_union_pw_qpolynomial(s);
2916 isl_stream_free(s);
2917 return upwqp;
2918 }
Integer set library