2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
5 * Use of this software is governed by the GNU LGPLv2.1 license
7 * Written by Sven Verdoolaege, K.U.Leuven, Departement
8 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
9 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
10 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
16 #include <isl_ctx_private.h>
17 #include <isl_map_private.h>
20 #include <isl_stream_private.h>
22 #include "isl_polynomial_private.h"
23 #include <isl/union_map.h>
24 #include <isl_mat_private.h>
25 #include <isl_aff_private.h>
31 struct variable *next;
40 static struct vars *vars_new(struct isl_ctx *ctx)
43 v = isl_alloc_type(ctx, struct vars);
52 static void variable_free(struct variable *var)
55 struct variable *next = var->next;
62 static void vars_free(struct vars *v)
70 static void vars_drop(struct vars *v, int n)
81 struct variable *next = var->next;
89 static struct variable *variable_new(struct vars *v, const char *name, int len,
93 var = isl_calloc_type(v->ctx, struct variable);
96 var->name = strdup(name);
97 var->name[len] = '\0';
106 static int vars_pos(struct vars *v, const char *s, int len)
113 for (q = v->v; q; q = q->next) {
114 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
121 v->v = variable_new(v, s, len, v->n);
129 static int vars_add_anon(struct vars *v)
131 v->v = variable_new(v, "", 0, v->n);
140 static __isl_give isl_map *set_name(__isl_take isl_map *map,
141 enum isl_dim_type type, unsigned pos, char *name)
150 prime = strchr(name, '\'');
153 map = isl_map_set_dim_name(map, type, pos, name);
160 /* Obtain next token, with some preprocessing.
161 * In particular, evaluate expressions of the form x^y,
162 * with x and y values.
164 static struct isl_token *next_token(struct isl_stream *s)
166 struct isl_token *tok, *tok2;
168 tok = isl_stream_next_token(s);
169 if (!tok || tok->type != ISL_TOKEN_VALUE)
171 if (!isl_stream_eat_if_available(s, '^'))
173 tok2 = isl_stream_next_token(s);
174 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
175 isl_stream_error(s, tok2, "expecting constant value");
179 isl_int_pow_ui(tok->u.v, tok->u.v, isl_int_get_ui(tok2->u.v));
181 isl_token_free(tok2);
185 isl_token_free(tok2);
189 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
191 struct isl_token *tok;
194 if (!tok || tok->type != ISL_TOKEN_VALUE) {
195 isl_stream_error(s, tok, "expecting constant value");
199 isl_int_mul(*f, *f, tok->u.v);
203 if (isl_stream_eat_if_available(s, '*'))
204 return accept_cst_factor(s, f);
212 /* Given an affine expression aff, return an affine expression
213 * for aff % d, with d the next token on the stream, which is
214 * assumed to be a constant.
216 * We introduce an integer division q = [aff/d] and the result
217 * is set to aff - d q.
219 static __isl_give isl_pw_aff *affine_mod(struct isl_stream *s,
220 struct vars *v, __isl_take isl_pw_aff *aff)
222 struct isl_token *tok;
226 if (!tok || tok->type != ISL_TOKEN_VALUE) {
227 isl_stream_error(s, tok, "expecting constant value");
231 q = isl_pw_aff_copy(aff);
232 q = isl_pw_aff_scale_down(q, tok->u.v);
233 q = isl_pw_aff_floor(q);
234 q = isl_pw_aff_scale(q, tok->u.v);
236 aff = isl_pw_aff_sub(aff, q);
241 isl_pw_aff_free(aff);
246 static __isl_give isl_pw_aff *accept_affine(struct isl_stream *s,
247 __isl_take isl_space *dim, struct vars *v);
248 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
249 __isl_take isl_space *dim, struct vars *v);
251 static __isl_give isl_pw_aff *accept_minmax(struct isl_stream *s,
252 __isl_take isl_space *dim, struct vars *v)
254 struct isl_token *tok;
255 isl_pw_aff_list *list = NULL;
258 tok = isl_stream_next_token(s);
261 min = tok->type == ISL_TOKEN_MIN;
264 if (isl_stream_eat(s, '('))
267 list = accept_affine_list(s, isl_space_copy(dim), v);
271 if (isl_stream_eat(s, ')'))
275 return min ? isl_pw_aff_list_min(list) : isl_pw_aff_list_max(list);
278 isl_pw_aff_list_free(list);
282 static __isl_give isl_pw_aff *accept_div(struct isl_stream *s,
283 __isl_take isl_space *dim, struct vars *v)
285 struct isl_token *tok;
289 isl_pw_aff *pwaff = NULL;
291 if (isl_stream_eat_if_available(s, ISL_TOKEN_FLOORD))
293 else if (isl_stream_eat_if_available(s, ISL_TOKEN_CEILD))
296 if (isl_stream_eat(s, '('))
299 if (isl_stream_eat(s, '['))
301 if (isl_stream_eat_if_available(s, '('))
305 pwaff = accept_affine(s, isl_space_copy(dim), v);
308 if (isl_stream_eat(s, ','))
311 if (seen_paren && isl_stream_eat(s, ')'))
313 if (isl_stream_eat(s, '/'))
320 if (tok->type != ISL_TOKEN_VALUE) {
321 isl_stream_error(s, tok, "expected denominator");
322 isl_stream_push_token(s, tok);
325 isl_pw_aff_scale_down(pwaff, tok->u.v);
329 pwaff = isl_pw_aff_ceil(pwaff);
331 pwaff = isl_pw_aff_floor(pwaff);
334 if (isl_stream_eat(s, ')'))
337 if (isl_stream_eat(s, ']'))
345 isl_pw_aff_free(pwaff);
349 static __isl_give isl_pw_aff *accept_affine_factor(struct isl_stream *s,
350 __isl_take isl_space *dim, struct vars *v)
352 struct isl_token *tok = NULL;
353 isl_pw_aff *res = NULL;
357 isl_stream_error(s, NULL, "unexpected EOF");
361 if (tok->type == ISL_TOKEN_AFF) {
362 res = isl_pw_aff_copy(tok->u.pwaff);
364 } else if (tok->type == ISL_TOKEN_IDENT) {
366 int pos = vars_pos(v, tok->u.s, -1);
372 isl_stream_error(s, tok, "unknown identifier");
376 aff = isl_aff_zero_on_domain(isl_local_space_from_space(isl_space_copy(dim)));
379 isl_int_set_si(aff->v->el[2 + pos], 1);
380 res = isl_pw_aff_from_aff(aff);
382 } else if (tok->type == ISL_TOKEN_VALUE) {
383 if (isl_stream_eat_if_available(s, '*')) {
384 res = accept_affine_factor(s, isl_space_copy(dim), v);
385 res = isl_pw_aff_scale(res, tok->u.v);
389 ls = isl_local_space_from_space(isl_space_copy(dim));
390 aff = isl_aff_zero_on_domain(ls);
391 aff = isl_aff_add_constant(aff, tok->u.v);
392 res = isl_pw_aff_from_aff(aff);
395 } else if (tok->type == '(') {
398 res = accept_affine(s, isl_space_copy(dim), v);
401 if (isl_stream_eat(s, ')'))
403 } else if (tok->type == '[' ||
404 tok->type == ISL_TOKEN_FLOORD ||
405 tok->type == ISL_TOKEN_CEILD) {
406 isl_stream_push_token(s, tok);
408 res = accept_div(s, isl_space_copy(dim), v);
409 } else if (tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX) {
410 isl_stream_push_token(s, tok);
412 res = accept_minmax(s, isl_space_copy(dim), v);
414 isl_stream_error(s, tok, "expecting factor");
417 if (isl_stream_eat_if_available(s, '%') ||
418 isl_stream_eat_if_available(s, ISL_TOKEN_MOD)) {
420 return affine_mod(s, v, res);
422 if (isl_stream_eat_if_available(s, '*')) {
425 isl_int_set_si(f, 1);
426 if (accept_cst_factor(s, &f) < 0) {
430 res = isl_pw_aff_scale(res, f);
439 isl_pw_aff_free(res);
444 static __isl_give isl_pw_aff *add_cst(__isl_take isl_pw_aff *pwaff, isl_int v)
449 space = isl_pw_aff_get_domain_space(pwaff);
450 aff = isl_aff_zero_on_domain(isl_local_space_from_space(space));
451 aff = isl_aff_add_constant(aff, v);
453 return isl_pw_aff_add(pwaff, isl_pw_aff_from_aff(aff));
456 static __isl_give isl_pw_aff *accept_affine(struct isl_stream *s,
457 __isl_take isl_space *dim, struct vars *v)
459 struct isl_token *tok = NULL;
464 ls = isl_local_space_from_space(isl_space_copy(dim));
465 res = isl_pw_aff_from_aff(isl_aff_zero_on_domain(ls));
472 isl_stream_error(s, NULL, "unexpected EOF");
475 if (tok->type == '-') {
480 if (tok->type == '(' || tok->type == '[' ||
481 tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX ||
482 tok->type == ISL_TOKEN_FLOORD ||
483 tok->type == ISL_TOKEN_CEILD ||
484 tok->type == ISL_TOKEN_IDENT ||
485 tok->type == ISL_TOKEN_AFF) {
487 isl_stream_push_token(s, tok);
489 term = accept_affine_factor(s, isl_space_copy(dim), v);
491 res = isl_pw_aff_sub(res, term);
493 res = isl_pw_aff_add(res, term);
497 } else if (tok->type == ISL_TOKEN_VALUE) {
499 isl_int_neg(tok->u.v, tok->u.v);
500 if (isl_stream_eat_if_available(s, '*') ||
501 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
503 term = accept_affine_factor(s,
504 isl_space_copy(dim), v);
505 term = isl_pw_aff_scale(term, tok->u.v);
506 res = isl_pw_aff_add(res, term);
510 res = add_cst(res, tok->u.v);
514 isl_stream_error(s, tok, "unexpected isl_token");
515 isl_stream_push_token(s, tok);
516 isl_pw_aff_free(res);
523 if (tok && tok->type == '-') {
526 } else if (tok && tok->type == '+') {
529 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
530 isl_int_is_neg(tok->u.v)) {
531 isl_stream_push_token(s, tok);
534 isl_stream_push_token(s, tok);
544 isl_pw_aff_free(res);
548 static int is_comparator(struct isl_token *tok)
566 static struct isl_map *read_disjuncts(struct isl_stream *s,
567 struct vars *v, __isl_take isl_map *map);
568 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
569 __isl_take isl_space *dim, struct vars *v);
571 /* Accept a ternary operator, given the first argument.
573 static __isl_give isl_pw_aff *accept_ternary(struct isl_stream *s,
574 __isl_take isl_map *cond, struct vars *v)
577 isl_pw_aff *pwaff1 = NULL, *pwaff2 = NULL;
582 if (isl_stream_eat(s, '?'))
585 dim = isl_space_wrap(isl_map_get_space(cond));
586 pwaff1 = accept_extended_affine(s, dim, v);
590 if (isl_stream_eat(s, ':'))
593 dim = isl_pw_aff_get_domain_space(pwaff1);
594 pwaff2 = accept_extended_affine(s, dim, v);
598 return isl_pw_aff_cond(isl_map_wrap(cond), pwaff1, pwaff2);
601 isl_pw_aff_free(pwaff1);
602 isl_pw_aff_free(pwaff2);
606 /* Accept an affine expression that may involve ternary operators.
607 * We first read an affine expression.
608 * If it is not followed by a comparison operator, we simply return it.
609 * Otherwise, we assume the affine epxression is part of the first
610 * argument of a ternary operator and try to parse that.
612 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
613 __isl_take isl_space *dim, struct vars *v)
618 struct isl_token *tok;
619 int line = -1, col = -1;
622 tok = isl_stream_next_token(s);
626 isl_stream_push_token(s, tok);
629 pwaff = accept_affine(s, dim, v);
633 tok = isl_stream_next_token(s);
635 return isl_pw_aff_free(pwaff);
637 is_comp = is_comparator(tok);
638 isl_stream_push_token(s, tok);
642 tok = isl_token_new(s->ctx, line, col, 0);
644 return isl_pw_aff_free(pwaff);
645 tok->type = ISL_TOKEN_AFF;
646 tok->u.pwaff = pwaff;
648 space = isl_pw_aff_get_domain_space(pwaff);
649 cond = isl_map_universe(isl_space_unwrap(space));
651 isl_stream_push_token(s, tok);
653 cond = read_disjuncts(s, v, cond);
655 return accept_ternary(s, cond, v);
658 static __isl_give isl_map *read_var_def(struct isl_stream *s,
659 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
665 if (type == isl_dim_param)
666 pos = isl_map_dim(map, isl_dim_param);
668 pos = isl_map_dim(map, isl_dim_in);
669 if (type == isl_dim_out)
670 pos += isl_map_dim(map, isl_dim_out);
675 def = accept_extended_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
676 def_map = isl_map_from_pw_aff(def);
677 def_map = isl_map_equate(def_map, type, pos, isl_dim_out, 0);
678 def_map = isl_set_unwrap(isl_map_domain(def_map));
680 map = isl_map_intersect(map, def_map);
685 static __isl_give isl_map *read_var_list(struct isl_stream *s,
686 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
689 struct isl_token *tok;
691 if (isl_stream_next_token_is(s, ']'))
692 return isl_map_add_dims(map, type, 0);
694 while ((tok = next_token(s)) != NULL) {
697 if (tok->type == ISL_TOKEN_IDENT) {
699 int p = vars_pos(v, tok->u.s, -1);
706 map = isl_map_add_dims(map, type, 1);
707 map = set_name(map, type, i, v->v->name);
709 if (isl_stream_eat_if_available(s, '='))
710 map = read_var_def(s, map, type, v);
712 if (type == isl_dim_param) {
713 isl_stream_error(s, tok,
714 "expecting unique identifier");
717 isl_stream_push_token(s, tok);
719 if (vars_add_anon(v) < 0)
721 map = isl_map_add_dims(map, type, 1);
722 map = read_var_def(s, map, type, v);
725 tok = isl_stream_next_token(s);
726 if (tok && tok->type == ']' &&
727 isl_stream_next_token_is(s, '[')) {
729 tok = isl_stream_next_token(s);
730 } else if (!tok || tok->type != ',')
737 isl_stream_push_token(s, tok);
746 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
747 __isl_take isl_space *dim, struct vars *v)
750 isl_pw_aff_list *list;
751 struct isl_token *tok = NULL;
753 pwaff = accept_affine(s, isl_space_copy(dim), v);
754 list = isl_pw_aff_list_from_pw_aff(pwaff);
759 tok = isl_stream_next_token(s);
761 isl_stream_error(s, NULL, "unexpected EOF");
764 if (tok->type != ',') {
765 isl_stream_push_token(s, tok);
770 pwaff = accept_affine(s, isl_space_copy(dim), v);
771 list = isl_pw_aff_list_concat(list,
772 isl_pw_aff_list_from_pw_aff(pwaff));
781 isl_pw_aff_list_free(list);
785 static __isl_give isl_map *read_defined_var_list(struct isl_stream *s,
786 struct vars *v, __isl_take isl_map *map)
788 struct isl_token *tok;
790 while ((tok = isl_stream_next_token(s)) != NULL) {
794 if (tok->type != ISL_TOKEN_IDENT)
797 p = vars_pos(v, tok->u.s, -1);
801 isl_stream_error(s, tok, "expecting unique identifier");
805 map = isl_map_add_dims(map, isl_dim_out, 1);
808 tok = isl_stream_next_token(s);
809 if (tok && tok->type == '=') {
811 map = read_var_def(s, map, isl_dim_out, v);
812 tok = isl_stream_next_token(s);
815 if (!tok || tok->type != ',')
821 isl_stream_push_token(s, tok);
830 static int next_is_tuple(struct isl_stream *s)
832 struct isl_token *tok;
835 tok = isl_stream_next_token(s);
838 if (tok->type == '[') {
839 isl_stream_push_token(s, tok);
842 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
843 isl_stream_push_token(s, tok);
847 is_tuple = isl_stream_next_token_is(s, '[');
849 isl_stream_push_token(s, tok);
854 static __isl_give isl_map *read_tuple(struct isl_stream *s,
855 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v);
857 static __isl_give isl_set *read_nested_tuple(struct isl_stream *s,
858 __isl_take isl_map *map, struct vars *v)
860 map = read_tuple(s, map, isl_dim_in, v);
861 if (isl_stream_eat(s, ISL_TOKEN_TO))
863 map = read_tuple(s, map, isl_dim_out, v);
864 return isl_map_wrap(map);
870 static __isl_give isl_map *read_tuple(struct isl_stream *s,
871 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
873 struct isl_token *tok;
876 tok = isl_stream_next_token(s);
877 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
878 name = strdup(tok->u.s);
882 tok = isl_stream_next_token(s);
884 if (!tok || tok->type != '[') {
885 isl_stream_error(s, tok, "expecting '['");
889 if (type != isl_dim_param && next_is_tuple(s)) {
890 isl_space *dim = isl_map_get_space(map);
891 int nparam = isl_space_dim(dim, isl_dim_param);
892 int n_in = isl_space_dim(dim, isl_dim_in);
894 if (type == isl_dim_out) {
895 dim = isl_space_move_dims(dim, isl_dim_param, nparam,
896 isl_dim_in, 0, n_in);
897 dim = isl_space_params(dim);
899 nested = read_nested_tuple(s, isl_map_universe(dim), v);
900 if (type == isl_dim_in) {
901 nested = isl_map_reverse(nested);
902 map = isl_map_intersect(nested, map);
905 dim = isl_set_get_space(nested);
906 dim = isl_space_drop_dims(dim, isl_dim_param, nparam, n_in);
907 dim = isl_space_join(isl_map_get_space(map), dim);
908 set = isl_map_domain(map);
909 nested = isl_map_reset_space(nested, dim);
910 map = isl_map_intersect_domain(nested, set);
913 map = read_var_list(s, map, type, v);
914 tok = isl_stream_next_token(s);
915 if (!tok || tok->type != ']') {
916 isl_stream_error(s, tok, "expecting ']'");
922 map = isl_map_set_tuple_name(map, type, name);
934 static __isl_give isl_set *construct_constraints(
935 __isl_take isl_set *set, enum isl_token_type type,
936 __isl_keep isl_pw_aff_list *left, __isl_keep isl_pw_aff_list *right)
940 if (type == ISL_TOKEN_LE)
941 cond = isl_pw_aff_list_le_set(isl_pw_aff_list_copy(left),
942 isl_pw_aff_list_copy(right));
943 else if (type == ISL_TOKEN_GE)
944 cond = isl_pw_aff_list_ge_set(isl_pw_aff_list_copy(left),
945 isl_pw_aff_list_copy(right));
946 else if (type == ISL_TOKEN_LT)
947 cond = isl_pw_aff_list_lt_set(isl_pw_aff_list_copy(left),
948 isl_pw_aff_list_copy(right));
949 else if (type == ISL_TOKEN_GT)
950 cond = isl_pw_aff_list_gt_set(isl_pw_aff_list_copy(left),
951 isl_pw_aff_list_copy(right));
952 else if (type == ISL_TOKEN_NE)
953 cond = isl_pw_aff_list_ne_set(isl_pw_aff_list_copy(left),
954 isl_pw_aff_list_copy(right));
956 cond = isl_pw_aff_list_eq_set(isl_pw_aff_list_copy(left),
957 isl_pw_aff_list_copy(right));
959 return isl_set_intersect(set, cond);
962 static __isl_give isl_map *add_constraint(struct isl_stream *s,
963 struct vars *v, __isl_take isl_map *map)
965 struct isl_token *tok = NULL;
966 isl_pw_aff_list *list1 = NULL, *list2 = NULL;
969 set = isl_map_wrap(map);
970 list1 = accept_affine_list(s, isl_set_get_space(set), v);
973 tok = isl_stream_next_token(s);
974 if (!is_comparator(tok)) {
975 isl_stream_error(s, tok, "missing operator");
977 isl_stream_push_token(s, tok);
982 list2 = accept_affine_list(s, isl_set_get_space(set), v);
986 set = construct_constraints(set, tok->type, list1, list2);
988 isl_pw_aff_list_free(list1);
991 tok = isl_stream_next_token(s);
992 if (!is_comparator(tok)) {
994 isl_stream_push_token(s, tok);
998 isl_pw_aff_list_free(list1);
1000 return isl_set_unwrap(set);
1003 isl_token_free(tok);
1004 isl_pw_aff_list_free(list1);
1005 isl_pw_aff_list_free(list2);
1010 static __isl_give isl_map *read_exists(struct isl_stream *s,
1011 struct vars *v, __isl_take isl_map *map)
1014 int seen_paren = isl_stream_eat_if_available(s, '(');
1016 map = isl_map_from_domain(isl_map_wrap(map));
1017 map = read_defined_var_list(s, v, map);
1019 if (isl_stream_eat(s, ':'))
1022 map = read_disjuncts(s, v, map);
1023 map = isl_set_unwrap(isl_map_domain(map));
1025 vars_drop(v, v->n - n);
1026 if (seen_paren && isl_stream_eat(s, ')'))
1035 /* Parse an expression between parentheses and push the result
1036 * back on the stream.
1038 * The parsed expression may be either an affine expression
1039 * or a condition. The first type is pushed onto the stream
1040 * as an isl_pw_aff, while the second is pushed as an isl_map.
1042 * If the initial token indicates the start of a condition,
1043 * we parse it as such.
1044 * Otherwise, we first parse an affine expression and push
1045 * that onto the stream. If the affine expression covers the
1046 * entire expression between parentheses, we return.
1047 * Otherwise, we assume that the affine expression is the
1048 * start of a condition and continue parsing.
1050 static int resolve_paren_expr(struct isl_stream *s,
1051 struct vars *v, __isl_take isl_map *map)
1053 struct isl_token *tok, *tok2;
1057 tok = isl_stream_next_token(s);
1058 if (!tok || tok->type != '(')
1061 if (isl_stream_next_token_is(s, ISL_TOKEN_EXISTS) ||
1062 isl_stream_next_token_is(s, ISL_TOKEN_TRUE) ||
1063 isl_stream_next_token_is(s, ISL_TOKEN_FALSE)) {
1064 map = read_disjuncts(s, v, map);
1065 if (isl_stream_eat(s, ')'))
1067 tok->type = ISL_TOKEN_MAP;
1069 isl_stream_push_token(s, tok);
1073 tok2 = isl_stream_next_token(s);
1078 isl_stream_push_token(s, tok2);
1080 pwaff = accept_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
1084 tok2 = isl_token_new(s->ctx, line, col, 0);
1087 tok2->type = ISL_TOKEN_AFF;
1088 tok2->u.pwaff = pwaff;
1090 if (isl_stream_eat_if_available(s, ')')) {
1091 isl_stream_push_token(s, tok2);
1092 isl_token_free(tok);
1097 isl_stream_push_token(s, tok2);
1099 map = read_disjuncts(s, v, map);
1100 if (isl_stream_eat(s, ')'))
1103 tok->type = ISL_TOKEN_MAP;
1105 isl_stream_push_token(s, tok);
1109 isl_pw_aff_free(pwaff);
1111 isl_token_free(tok);
1116 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1117 struct vars *v, __isl_take isl_map *map)
1119 if (isl_stream_next_token_is(s, '('))
1120 if (resolve_paren_expr(s, v, isl_map_copy(map)))
1123 if (isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1124 struct isl_token *tok;
1125 tok = isl_stream_next_token(s);
1129 map = isl_map_copy(tok->u.map);
1130 isl_token_free(tok);
1134 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1135 return read_exists(s, v, map);
1137 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1140 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1141 isl_space *dim = isl_map_get_space(map);
1143 return isl_map_empty(dim);
1146 return add_constraint(s, v, map);
1152 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1153 struct vars *v, __isl_take isl_map *map)
1158 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1159 res = read_conjunct(s, v, isl_map_copy(map));
1161 res = isl_map_subtract(isl_map_copy(map), res);
1163 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1166 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1167 res_i = read_conjunct(s, v, isl_map_copy(map));
1169 res = isl_map_subtract(res, res_i);
1171 res = isl_map_intersect(res, res_i);
1178 static struct isl_map *read_disjuncts(struct isl_stream *s,
1179 struct vars *v, __isl_take isl_map *map)
1183 if (isl_stream_next_token_is(s, '}')) {
1184 isl_space *dim = isl_map_get_space(map);
1186 return isl_map_universe(dim);
1189 res = read_conjuncts(s, v, isl_map_copy(map));
1190 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1193 res_i = read_conjuncts(s, v, isl_map_copy(map));
1194 res = isl_map_union(res, res_i);
1201 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1203 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1204 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1205 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1206 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1208 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1209 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1210 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1212 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1213 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1214 isl_basic_map_dim(bmap, isl_dim_in) +
1215 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1216 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1218 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1224 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1225 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1228 struct isl_token *tok;
1238 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1239 dim = isl_basic_map_dim(bmap, isl_dim_out);
1241 tok = isl_stream_next_token(s);
1242 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1243 isl_stream_error(s, tok, "expecting coefficient");
1245 isl_stream_push_token(s, tok);
1248 if (!tok->on_new_line) {
1249 isl_stream_error(s, tok, "coefficient should appear on new line");
1250 isl_stream_push_token(s, tok);
1254 type = isl_int_get_si(tok->u.v);
1255 isl_token_free(tok);
1257 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1259 k = isl_basic_map_alloc_equality(bmap);
1262 k = isl_basic_map_alloc_inequality(bmap);
1268 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1270 tok = isl_stream_next_token(s);
1271 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1272 isl_stream_error(s, tok, "expecting coefficient");
1274 isl_stream_push_token(s, tok);
1277 if (tok->on_new_line) {
1278 isl_stream_error(s, tok,
1279 "coefficient should not appear on new line");
1280 isl_stream_push_token(s, tok);
1283 pos = polylib_pos_to_isl_pos(bmap, j);
1284 isl_int_set(c[pos], tok->u.v);
1285 isl_token_free(tok);
1290 isl_basic_map_free(bmap);
1294 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s)
1297 struct isl_token *tok;
1298 struct isl_token *tok2;
1301 unsigned in = 0, out, local = 0;
1302 struct isl_basic_map *bmap = NULL;
1305 tok = isl_stream_next_token(s);
1307 isl_stream_error(s, NULL, "unexpected EOF");
1310 tok2 = isl_stream_next_token(s);
1312 isl_token_free(tok);
1313 isl_stream_error(s, NULL, "unexpected EOF");
1316 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1317 isl_stream_push_token(s, tok2);
1318 isl_stream_push_token(s, tok);
1319 isl_stream_error(s, NULL,
1320 "expecting constraint matrix dimensions");
1323 n_row = isl_int_get_si(tok->u.v);
1324 n_col = isl_int_get_si(tok2->u.v);
1325 on_new_line = tok2->on_new_line;
1326 isl_token_free(tok2);
1327 isl_token_free(tok);
1328 isl_assert(s->ctx, !on_new_line, return NULL);
1329 isl_assert(s->ctx, n_row >= 0, return NULL);
1330 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1331 tok = isl_stream_next_token_on_same_line(s);
1333 if (tok->type != ISL_TOKEN_VALUE) {
1334 isl_stream_error(s, tok,
1335 "expecting number of output dimensions");
1336 isl_stream_push_token(s, tok);
1339 out = isl_int_get_si(tok->u.v);
1340 isl_token_free(tok);
1342 tok = isl_stream_next_token_on_same_line(s);
1343 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1344 isl_stream_error(s, tok,
1345 "expecting number of input dimensions");
1347 isl_stream_push_token(s, tok);
1350 in = isl_int_get_si(tok->u.v);
1351 isl_token_free(tok);
1353 tok = isl_stream_next_token_on_same_line(s);
1354 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1355 isl_stream_error(s, tok,
1356 "expecting number of existentials");
1358 isl_stream_push_token(s, tok);
1361 local = isl_int_get_si(tok->u.v);
1362 isl_token_free(tok);
1364 tok = isl_stream_next_token_on_same_line(s);
1365 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1366 isl_stream_error(s, tok,
1367 "expecting number of parameters");
1369 isl_stream_push_token(s, tok);
1372 nparam = isl_int_get_si(tok->u.v);
1373 isl_token_free(tok);
1374 if (n_col != 1 + out + in + local + nparam + 1) {
1375 isl_stream_error(s, NULL,
1376 "dimensions don't match");
1380 out = n_col - 2 - nparam;
1381 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1385 for (i = 0; i < local; ++i) {
1386 int k = isl_basic_map_alloc_div(bmap);
1389 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1392 for (i = 0; i < n_row; ++i)
1393 bmap = basic_map_read_polylib_constraint(s, bmap);
1395 tok = isl_stream_next_token_on_same_line(s);
1397 isl_stream_error(s, tok, "unexpected extra token on line");
1398 isl_stream_push_token(s, tok);
1402 bmap = isl_basic_map_simplify(bmap);
1403 bmap = isl_basic_map_finalize(bmap);
1406 isl_basic_map_free(bmap);
1410 static struct isl_map *map_read_polylib(struct isl_stream *s)
1412 struct isl_token *tok;
1413 struct isl_token *tok2;
1415 struct isl_map *map;
1417 tok = isl_stream_next_token(s);
1419 isl_stream_error(s, NULL, "unexpected EOF");
1422 tok2 = isl_stream_next_token_on_same_line(s);
1423 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1424 isl_stream_push_token(s, tok2);
1425 isl_stream_push_token(s, tok);
1426 return isl_map_from_basic_map(basic_map_read_polylib(s));
1429 isl_stream_error(s, tok2, "unexpected token");
1430 isl_stream_push_token(s, tok2);
1431 isl_stream_push_token(s, tok);
1434 n = isl_int_get_si(tok->u.v);
1435 isl_token_free(tok);
1437 isl_assert(s->ctx, n >= 1, return NULL);
1439 map = isl_map_from_basic_map(basic_map_read_polylib(s));
1441 for (i = 1; map && i < n; ++i)
1442 map = isl_map_union(map,
1443 isl_map_from_basic_map(basic_map_read_polylib(s)));
1448 static int optional_power(struct isl_stream *s)
1451 struct isl_token *tok;
1453 tok = isl_stream_next_token(s);
1456 if (tok->type != '^') {
1457 isl_stream_push_token(s, tok);
1460 isl_token_free(tok);
1461 tok = isl_stream_next_token(s);
1462 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1463 isl_stream_error(s, tok, "expecting exponent");
1465 isl_stream_push_token(s, tok);
1468 pow = isl_int_get_si(tok->u.v);
1469 isl_token_free(tok);
1473 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1474 __isl_keep isl_map *map, struct vars *v);
1476 static __isl_give isl_pw_qpolynomial *read_factor(struct isl_stream *s,
1477 __isl_keep isl_map *map, struct vars *v)
1479 isl_pw_qpolynomial *pwqp;
1480 struct isl_token *tok;
1482 tok = next_token(s);
1484 isl_stream_error(s, NULL, "unexpected EOF");
1487 if (tok->type == '(') {
1490 isl_token_free(tok);
1491 pwqp = read_term(s, map, v);
1494 if (isl_stream_eat(s, ')'))
1496 pow = optional_power(s);
1497 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1498 } else if (tok->type == ISL_TOKEN_VALUE) {
1499 struct isl_token *tok2;
1500 tok2 = isl_stream_next_token(s);
1501 isl_qpolynomial *qp;
1502 if (tok2 && tok2->type == '/') {
1503 isl_token_free(tok2);
1504 tok2 = next_token(s);
1505 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1506 isl_stream_error(s, tok2, "expected denominator");
1507 isl_token_free(tok);
1508 isl_token_free(tok2);
1511 qp = isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map),
1512 tok->u.v, tok2->u.v);
1513 isl_token_free(tok2);
1515 isl_stream_push_token(s, tok2);
1516 qp = isl_qpolynomial_cst_on_domain(isl_map_get_space(map),
1519 isl_token_free(tok);
1520 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1521 } else if (tok->type == ISL_TOKEN_INFTY) {
1522 isl_qpolynomial *qp;
1523 isl_token_free(tok);
1524 qp = isl_qpolynomial_infty_on_domain(isl_map_get_space(map));
1525 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1526 } else if (tok->type == ISL_TOKEN_NAN) {
1527 isl_qpolynomial *qp;
1528 isl_token_free(tok);
1529 qp = isl_qpolynomial_nan_on_domain(isl_map_get_space(map));
1530 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1531 } else if (tok->type == ISL_TOKEN_IDENT) {
1533 int pos = vars_pos(v, tok->u.s, -1);
1535 isl_qpolynomial *qp;
1537 isl_token_free(tok);
1541 vars_drop(v, v->n - n);
1542 isl_stream_error(s, tok, "unknown identifier");
1543 isl_token_free(tok);
1546 isl_token_free(tok);
1547 pow = optional_power(s);
1548 qp = isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map), pos, pow);
1549 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1550 } else if (tok->type == '[') {
1554 isl_stream_push_token(s, tok);
1555 pwaff = accept_affine(s, isl_map_get_space(map), v);
1556 pow = optional_power(s);
1557 pwqp = isl_pw_qpolynomial_from_pw_aff(pwaff);
1558 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1559 } else if (tok->type == '-') {
1560 isl_token_free(tok);
1561 pwqp = read_factor(s, map, v);
1562 pwqp = isl_pw_qpolynomial_neg(pwqp);
1564 isl_stream_error(s, tok, "unexpected isl_token");
1565 isl_stream_push_token(s, tok);
1569 if (isl_stream_eat_if_available(s, '*') ||
1570 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1571 isl_pw_qpolynomial *pwqp2;
1573 pwqp2 = read_factor(s, map, v);
1574 pwqp = isl_pw_qpolynomial_mul(pwqp, pwqp2);
1579 isl_pw_qpolynomial_free(pwqp);
1583 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1584 __isl_keep isl_map *map, struct vars *v)
1586 struct isl_token *tok;
1587 isl_pw_qpolynomial *pwqp;
1589 pwqp = read_factor(s, map, v);
1592 tok = next_token(s);
1596 if (tok->type == '+') {
1597 isl_pw_qpolynomial *pwqp2;
1599 isl_token_free(tok);
1600 pwqp2 = read_factor(s, map, v);
1601 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1602 } else if (tok->type == '-') {
1603 isl_pw_qpolynomial *pwqp2;
1605 isl_token_free(tok);
1606 pwqp2 = read_factor(s, map, v);
1607 pwqp = isl_pw_qpolynomial_sub(pwqp, pwqp2);
1608 } else if (tok->type == ISL_TOKEN_VALUE &&
1609 isl_int_is_neg(tok->u.v)) {
1610 isl_pw_qpolynomial *pwqp2;
1612 isl_stream_push_token(s, tok);
1613 pwqp2 = read_factor(s, map, v);
1614 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1616 isl_stream_push_token(s, tok);
1624 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1625 __isl_take isl_map *map, struct vars *v)
1627 struct isl_token *tok;
1629 tok = isl_stream_next_token(s);
1631 isl_stream_error(s, NULL, "unexpected EOF");
1634 if (tok->type == ':' ||
1635 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1636 isl_token_free(tok);
1637 map = read_disjuncts(s, v, map);
1639 isl_stream_push_token(s, tok);
1647 static struct isl_obj obj_read_poly(struct isl_stream *s,
1648 __isl_take isl_map *map, struct vars *v, int n)
1650 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1651 isl_pw_qpolynomial *pwqp;
1652 struct isl_set *set;
1654 pwqp = read_term(s, map, v);
1655 map = read_optional_disjuncts(s, map, v);
1656 set = isl_map_range(map);
1658 pwqp = isl_pw_qpolynomial_intersect_domain(pwqp, set);
1660 vars_drop(v, v->n - n);
1666 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1667 __isl_take isl_set *set, struct vars *v, int n)
1669 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1670 isl_pw_qpolynomial *pwqp;
1671 isl_pw_qpolynomial_fold *pwf = NULL;
1673 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1674 return obj_read_poly(s, set, v, n);
1676 if (isl_stream_eat(s, '('))
1679 pwqp = read_term(s, set, v);
1680 pwf = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max, pwqp);
1682 while (isl_stream_eat_if_available(s, ',')) {
1683 isl_pw_qpolynomial_fold *pwf_i;
1684 pwqp = read_term(s, set, v);
1685 pwf_i = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max,
1687 pwf = isl_pw_qpolynomial_fold_fold(pwf, pwf_i);
1690 if (isl_stream_eat(s, ')'))
1693 set = read_optional_disjuncts(s, set, v);
1694 pwf = isl_pw_qpolynomial_fold_intersect_domain(pwf, set);
1696 vars_drop(v, v->n - n);
1702 isl_pw_qpolynomial_fold_free(pwf);
1703 obj.type = isl_obj_none;
1707 static int is_rational(struct isl_stream *s)
1709 struct isl_token *tok;
1711 tok = isl_stream_next_token(s);
1714 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1715 isl_token_free(tok);
1716 isl_stream_eat(s, ':');
1720 isl_stream_push_token(s, tok);
1725 static struct isl_obj obj_read_body(struct isl_stream *s,
1726 __isl_take isl_map *map, struct vars *v)
1728 struct isl_token *tok;
1729 struct isl_obj obj = { isl_obj_set, NULL };
1733 map = isl_map_set_rational(map);
1735 if (isl_stream_next_token_is(s, ':')) {
1736 obj.type = isl_obj_set;
1737 obj.v = read_optional_disjuncts(s, map, v);
1741 if (!next_is_tuple(s))
1742 return obj_read_poly_or_fold(s, map, v, n);
1744 map = read_tuple(s, map, isl_dim_in, v);
1747 tok = isl_stream_next_token(s);
1748 if (tok && tok->type == ISL_TOKEN_TO) {
1749 obj.type = isl_obj_map;
1750 isl_token_free(tok);
1751 if (!next_is_tuple(s)) {
1752 isl_set *set = isl_map_domain(map);
1753 return obj_read_poly_or_fold(s, set, v, n);
1755 map = read_tuple(s, map, isl_dim_out, v);
1759 map = isl_map_reverse(map);
1761 isl_stream_push_token(s, tok);
1764 map = read_optional_disjuncts(s, map, v);
1766 vars_drop(v, v->n - n);
1772 obj.type = isl_obj_none;
1776 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1778 if (obj.type == isl_obj_map) {
1779 obj.v = isl_union_map_from_map(obj.v);
1780 obj.type = isl_obj_union_map;
1781 } else if (obj.type == isl_obj_set) {
1782 obj.v = isl_union_set_from_set(obj.v);
1783 obj.type = isl_obj_union_set;
1784 } else if (obj.type == isl_obj_pw_qpolynomial) {
1785 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1786 obj.type = isl_obj_union_pw_qpolynomial;
1787 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1788 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1789 obj.type = isl_obj_union_pw_qpolynomial_fold;
1791 isl_assert(ctx, 0, goto error);
1794 obj.type->free(obj.v);
1795 obj.type = isl_obj_none;
1799 static struct isl_obj obj_add(struct isl_ctx *ctx,
1800 struct isl_obj obj1, struct isl_obj obj2)
1802 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1803 obj1 = to_union(ctx, obj1);
1804 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1805 obj2 = to_union(ctx, obj2);
1806 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1807 obj1 = to_union(ctx, obj1);
1808 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1809 obj2 = to_union(ctx, obj2);
1810 if (obj1.type == isl_obj_pw_qpolynomial &&
1811 obj2.type == isl_obj_union_pw_qpolynomial)
1812 obj1 = to_union(ctx, obj1);
1813 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1814 obj2.type == isl_obj_pw_qpolynomial)
1815 obj2 = to_union(ctx, obj2);
1816 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1817 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1818 obj1 = to_union(ctx, obj1);
1819 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1820 obj2.type == isl_obj_pw_qpolynomial_fold)
1821 obj2 = to_union(ctx, obj2);
1822 isl_assert(ctx, obj1.type == obj2.type, goto error);
1823 if (obj1.type == isl_obj_map && !isl_map_has_equal_space(obj1.v, obj2.v)) {
1824 obj1 = to_union(ctx, obj1);
1825 obj2 = to_union(ctx, obj2);
1827 if (obj1.type == isl_obj_set && !isl_set_has_equal_space(obj1.v, obj2.v)) {
1828 obj1 = to_union(ctx, obj1);
1829 obj2 = to_union(ctx, obj2);
1831 if (obj1.type == isl_obj_pw_qpolynomial &&
1832 !isl_pw_qpolynomial_has_equal_space(obj1.v, obj2.v)) {
1833 obj1 = to_union(ctx, obj1);
1834 obj2 = to_union(ctx, obj2);
1836 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1837 !isl_pw_qpolynomial_fold_has_equal_space(obj1.v, obj2.v)) {
1838 obj1 = to_union(ctx, obj1);
1839 obj2 = to_union(ctx, obj2);
1841 obj1.v = obj1.type->add(obj1.v, obj2.v);
1844 obj1.type->free(obj1.v);
1845 obj2.type->free(obj2.v);
1846 obj1.type = isl_obj_none;
1851 static struct isl_obj obj_read(struct isl_stream *s)
1853 isl_map *map = NULL;
1854 struct isl_token *tok;
1855 struct vars *v = NULL;
1856 struct isl_obj obj = { isl_obj_set, NULL };
1858 tok = next_token(s);
1860 isl_stream_error(s, NULL, "unexpected EOF");
1863 if (tok->type == ISL_TOKEN_VALUE) {
1864 struct isl_token *tok2;
1865 struct isl_map *map;
1867 tok2 = isl_stream_next_token(s);
1868 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
1869 isl_int_is_neg(tok2->u.v)) {
1871 isl_stream_push_token(s, tok2);
1872 obj.type = isl_obj_int;
1873 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
1874 isl_token_free(tok);
1877 isl_stream_push_token(s, tok2);
1878 isl_stream_push_token(s, tok);
1879 map = map_read_polylib(s);
1882 if (isl_map_may_be_set(map))
1883 obj.v = isl_map_range(map);
1885 obj.type = isl_obj_map;
1890 v = vars_new(s->ctx);
1892 isl_stream_push_token(s, tok);
1895 map = isl_map_universe(isl_space_params_alloc(s->ctx, 0));
1896 if (tok->type == '[') {
1897 isl_stream_push_token(s, tok);
1898 map = read_tuple(s, map, isl_dim_param, v);
1901 tok = isl_stream_next_token(s);
1902 if (!tok || tok->type != ISL_TOKEN_TO) {
1903 isl_stream_error(s, tok, "expecting '->'");
1905 isl_stream_push_token(s, tok);
1908 isl_token_free(tok);
1909 tok = isl_stream_next_token(s);
1911 if (!tok || tok->type != '{') {
1912 isl_stream_error(s, tok, "expecting '{'");
1914 isl_stream_push_token(s, tok);
1917 isl_token_free(tok);
1919 tok = isl_stream_next_token(s);
1922 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1923 isl_token_free(tok);
1924 if (isl_stream_eat(s, '='))
1926 map = read_tuple(s, map, isl_dim_param, v);
1929 } else if (tok->type == '}') {
1930 obj.type = isl_obj_union_set;
1931 obj.v = isl_union_set_empty(isl_map_get_space(map));
1932 isl_token_free(tok);
1935 isl_stream_push_token(s, tok);
1940 o = obj_read_body(s, isl_map_copy(map), v);
1941 if (o.type == isl_obj_none || !o.v)
1946 obj = obj_add(s->ctx, obj, o);
1947 if (obj.type == isl_obj_none || !obj.v)
1950 tok = isl_stream_next_token(s);
1951 if (!tok || tok->type != ';')
1953 isl_token_free(tok);
1954 if (isl_stream_next_token_is(s, '}')) {
1955 tok = isl_stream_next_token(s);
1960 if (tok && tok->type == '}') {
1961 isl_token_free(tok);
1963 isl_stream_error(s, tok, "unexpected isl_token");
1965 isl_token_free(tok);
1975 obj.type->free(obj.v);
1982 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1987 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s)
1993 isl_assert(s->ctx, obj.type == isl_obj_map ||
1994 obj.type == isl_obj_set, goto error);
1998 obj.type->free(obj.v);
2002 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s)
2008 if (obj.type == isl_obj_map && isl_map_may_be_set(obj.v)) {
2009 obj.v = isl_map_range(obj.v);
2010 obj.type = isl_obj_set;
2012 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2017 obj.type->free(obj.v);
2021 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2026 if (obj.type == isl_obj_map) {
2027 obj.type = isl_obj_union_map;
2028 obj.v = isl_union_map_from_map(obj.v);
2030 if (obj.type == isl_obj_set) {
2031 obj.type = isl_obj_union_set;
2032 obj.v = isl_union_set_from_set(obj.v);
2035 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
2036 obj.type == isl_obj_union_set, goto error);
2040 obj.type->free(obj.v);
2044 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2049 if (obj.type == isl_obj_set) {
2050 obj.type = isl_obj_union_set;
2051 obj.v = isl_union_set_from_set(obj.v);
2054 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2058 obj.type->free(obj.v);
2062 static __isl_give isl_basic_map *basic_map_read(struct isl_stream *s)
2065 struct isl_map *map;
2066 struct isl_basic_map *bmap;
2073 isl_assert(map->ctx, map->n <= 1, goto error);
2076 bmap = isl_basic_map_empty_like_map(map);
2078 bmap = isl_basic_map_copy(map->p[0]);
2088 static __isl_give isl_basic_set *basic_set_read(struct isl_stream *s)
2090 isl_basic_map *bmap;
2091 bmap = basic_map_read(s);
2094 if (!isl_basic_map_may_be_set(bmap))
2095 isl_die(s->ctx, isl_error_invalid,
2096 "input is not a set", goto error);
2097 return isl_basic_map_range(bmap);
2099 isl_basic_map_free(bmap);
2103 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2106 struct isl_basic_map *bmap;
2107 struct isl_stream *s = isl_stream_new_file(ctx, input);
2110 bmap = basic_map_read(s);
2115 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2118 isl_basic_set *bset;
2119 struct isl_stream *s = isl_stream_new_file(ctx, input);
2122 bset = basic_set_read(s);
2127 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2130 struct isl_basic_map *bmap;
2131 struct isl_stream *s = isl_stream_new_str(ctx, str);
2134 bmap = basic_map_read(s);
2139 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2142 isl_basic_set *bset;
2143 struct isl_stream *s = isl_stream_new_str(ctx, str);
2146 bset = basic_set_read(s);
2151 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2154 struct isl_map *map;
2155 struct isl_stream *s = isl_stream_new_file(ctx, input);
2158 map = isl_stream_read_map(s);
2163 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2166 struct isl_map *map;
2167 struct isl_stream *s = isl_stream_new_str(ctx, str);
2170 map = isl_stream_read_map(s);
2175 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2179 struct isl_stream *s = isl_stream_new_file(ctx, input);
2182 set = isl_stream_read_set(s);
2187 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2191 struct isl_stream *s = isl_stream_new_str(ctx, str);
2194 set = isl_stream_read_set(s);
2199 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2202 isl_union_map *umap;
2203 struct isl_stream *s = isl_stream_new_file(ctx, input);
2206 umap = isl_stream_read_union_map(s);
2211 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2214 isl_union_map *umap;
2215 struct isl_stream *s = isl_stream_new_str(ctx, str);
2218 umap = isl_stream_read_union_map(s);
2223 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2226 isl_union_set *uset;
2227 struct isl_stream *s = isl_stream_new_file(ctx, input);
2230 uset = isl_stream_read_union_set(s);
2235 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2238 isl_union_set *uset;
2239 struct isl_stream *s = isl_stream_new_str(ctx, str);
2242 uset = isl_stream_read_union_set(s);
2247 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2249 struct isl_vec *vec = NULL;
2250 struct isl_token *tok;
2254 tok = isl_stream_next_token(s);
2255 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2256 isl_stream_error(s, tok, "expecting vector length");
2260 size = isl_int_get_si(tok->u.v);
2261 isl_token_free(tok);
2263 vec = isl_vec_alloc(s->ctx, size);
2265 for (j = 0; j < size; ++j) {
2266 tok = isl_stream_next_token(s);
2267 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2268 isl_stream_error(s, tok, "expecting constant value");
2271 isl_int_set(vec->el[j], tok->u.v);
2272 isl_token_free(tok);
2277 isl_token_free(tok);
2282 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2284 return isl_vec_read_polylib(s);
2287 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2290 struct isl_stream *s = isl_stream_new_file(ctx, input);
2298 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2299 struct isl_stream *s)
2305 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2310 obj.type->free(obj.v);
2314 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2317 isl_pw_qpolynomial *pwqp;
2318 struct isl_stream *s = isl_stream_new_str(ctx, str);
2321 pwqp = isl_stream_read_pw_qpolynomial(s);
2326 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_file(isl_ctx *ctx,
2329 isl_pw_qpolynomial *pwqp;
2330 struct isl_stream *s = isl_stream_new_file(ctx, input);
2333 pwqp = isl_stream_read_pw_qpolynomial(s);
2338 /* Read an affine expression from "s" with domain (space) "dom".
2339 * We call accept_affine to parse a possibly piecewise affine expression
2340 * and then check that the result is a single affine expression on
2341 * a universe domain.
2343 static __isl_give isl_aff *read_aff_with_dom(struct isl_stream *s,
2344 __isl_take isl_set *dom, struct vars *v)
2346 isl_aff *aff = NULL;
2347 isl_pw_aff *pwaff = NULL;
2349 if (!isl_set_plain_is_universe(dom))
2350 isl_die(s->ctx, isl_error_invalid,
2351 "expecting universe domain", goto error);
2353 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2356 if (isl_stream_eat(s, '['))
2359 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2361 if (isl_stream_eat(s, ']'))
2363 if (isl_stream_eat(s, '}'))
2370 isl_die(s->ctx, isl_error_invalid,
2371 "expecting single affine expression", goto error);
2372 if (!isl_set_plain_is_universe(pwaff->p[0].set))
2373 isl_die(s->ctx, isl_error_invalid,
2374 "expecting universe domain", goto error);
2376 aff = isl_aff_copy(pwaff->p[0].aff);
2379 isl_pw_aff_free(pwaff);
2384 isl_pw_aff_free(pwaff);
2389 /* Is the next token an identifer not in "v"?
2391 static int next_is_fresh_ident(struct isl_stream *s, struct vars *v)
2395 struct isl_token *tok;
2397 tok = isl_stream_next_token(s);
2400 fresh = tok->type == ISL_TOKEN_IDENT && vars_pos(v, tok->u.s, -1) >= n;
2401 isl_stream_push_token(s, tok);
2403 vars_drop(v, v->n - n);
2408 /* First read the domain of the affine expression, which may be
2409 * a parameter space or a set.
2410 * The tricky part is that we don't know if the domain is a set or not,
2411 * so when we are trying to read the domain, we may actually be reading
2412 * the affine expression itself (defined on a parameter domains)
2413 * If the tuple we are reading is named, we assume it's the domain.
2414 * Also, if inside the tuple, the first thing we find is a nested tuple
2415 * or a new identifier, we again assume it's the domain.
2416 * Otherwise, we assume we are reading an affine expression.
2418 static __isl_give isl_set *read_aff_domain(struct isl_stream *s,
2419 __isl_take isl_set *dom, struct vars *v)
2421 struct isl_token *tok;
2423 tok = isl_stream_next_token(s);
2424 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
2425 isl_stream_push_token(s, tok);
2426 return read_tuple(s, dom, isl_dim_set, v);
2428 if (!tok || tok->type != '[') {
2429 isl_stream_error(s, tok, "expecting '['");
2432 if (next_is_tuple(s) || next_is_fresh_ident(s, v)) {
2433 isl_stream_push_token(s, tok);
2434 dom = read_tuple(s, dom, isl_dim_set, v);
2436 isl_stream_push_token(s, tok);
2441 isl_stream_push_token(s, tok);
2447 /* Read an affine expression from "s".
2448 * We first read the domain of the affine expression, which may be
2449 * a parameter space or a set, and then call read_aff_with_dom.
2451 __isl_give isl_aff *isl_stream_read_aff(struct isl_stream *s)
2454 isl_set *dom = NULL;
2456 v = vars_new(s->ctx);
2460 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2461 if (next_is_tuple(s)) {
2462 dom = read_tuple(s, dom, isl_dim_param, v);
2463 if (isl_stream_eat(s, ISL_TOKEN_TO))
2466 if (isl_stream_eat(s, '{'))
2469 dom = read_aff_domain(s, dom, v);
2470 return read_aff_with_dom(s, dom, v);
2477 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2479 static __isl_give isl_pw_aff *read_pw_aff_with_dom(struct isl_stream *s,
2480 __isl_take isl_set *dom, struct vars *v)
2482 isl_pw_aff *pwaff = NULL;
2484 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2487 if (isl_stream_eat(s, '['))
2490 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2492 if (isl_stream_eat(s, ']'))
2495 dom = read_optional_disjuncts(s, dom, v);
2496 pwaff = isl_pw_aff_intersect_domain(pwaff, dom);
2501 isl_pw_aff_free(pwaff);
2505 __isl_give isl_pw_aff *isl_stream_read_pw_aff(struct isl_stream *s)
2508 isl_set *dom = NULL;
2510 isl_pw_aff *pa = NULL;
2513 v = vars_new(s->ctx);
2517 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2518 if (next_is_tuple(s)) {
2519 dom = read_tuple(s, dom, isl_dim_param, v);
2520 if (isl_stream_eat(s, ISL_TOKEN_TO))
2523 if (isl_stream_eat(s, '{'))
2527 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2528 pa = read_pw_aff_with_dom(s, aff_dom, v);
2529 vars_drop(v, v->n - n);
2531 while (isl_stream_eat_if_available(s, ';')) {
2535 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2536 pa_i = read_pw_aff_with_dom(s, aff_dom, v);
2537 vars_drop(v, v->n - n);
2539 pa = isl_pw_aff_add(pa, pa_i);
2542 if (isl_stream_eat(s, '}'))
2551 isl_pw_aff_free(pa);
2555 __isl_give isl_aff *isl_aff_read_from_str(isl_ctx *ctx, const char *str)
2558 struct isl_stream *s = isl_stream_new_str(ctx, str);
2561 aff = isl_stream_read_aff(s);
2566 __isl_give isl_pw_aff *isl_pw_aff_read_from_str(isl_ctx *ctx, const char *str)
2569 struct isl_stream *s = isl_stream_new_str(ctx, str);
2572 pa = isl_stream_read_pw_aff(s);
2577 /* Read an isl_pw_multi_aff from "s".
2578 * We currently read a generic object and if it turns out to be a set or
2579 * a map, we convert that to an isl_pw_multi_aff.
2580 * It would be more efficient if we were to construct the isl_pw_multi_aff
2583 __isl_give isl_pw_multi_aff *isl_stream_read_pw_multi_aff(struct isl_stream *s)
2591 if (obj.type == isl_obj_map)
2592 return isl_pw_multi_aff_from_map(obj.v);
2593 if (obj.type == isl_obj_set)
2594 return isl_pw_multi_aff_from_set(obj.v);
2596 obj.type->free(obj.v);
2597 isl_die(s->ctx, isl_error_invalid, "unexpected object type",
2601 __isl_give isl_pw_multi_aff *isl_pw_multi_aff_read_from_str(isl_ctx *ctx,
2604 isl_pw_multi_aff *pma;
2605 struct isl_stream *s = isl_stream_new_str(ctx, str);
2608 pma = isl_stream_read_pw_multi_aff(s);