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, *pa_cond;
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 pa_cond = isl_set_indicator_function(isl_map_wrap(cond));
599 return isl_pw_aff_cond(pa_cond, pwaff1, pwaff2);
602 isl_pw_aff_free(pwaff1);
603 isl_pw_aff_free(pwaff2);
607 /* Accept an affine expression that may involve ternary operators.
608 * We first read an affine expression.
609 * If it is not followed by a comparison operator, we simply return it.
610 * Otherwise, we assume the affine epxression is part of the first
611 * argument of a ternary operator and try to parse that.
613 static __isl_give isl_pw_aff *accept_extended_affine(struct isl_stream *s,
614 __isl_take isl_space *dim, struct vars *v)
619 struct isl_token *tok;
620 int line = -1, col = -1;
623 tok = isl_stream_next_token(s);
627 isl_stream_push_token(s, tok);
630 pwaff = accept_affine(s, dim, v);
634 tok = isl_stream_next_token(s);
636 return isl_pw_aff_free(pwaff);
638 is_comp = is_comparator(tok);
639 isl_stream_push_token(s, tok);
643 tok = isl_token_new(s->ctx, line, col, 0);
645 return isl_pw_aff_free(pwaff);
646 tok->type = ISL_TOKEN_AFF;
647 tok->u.pwaff = pwaff;
649 space = isl_pw_aff_get_domain_space(pwaff);
650 cond = isl_map_universe(isl_space_unwrap(space));
652 isl_stream_push_token(s, tok);
654 cond = read_disjuncts(s, v, cond);
656 return accept_ternary(s, cond, v);
659 static __isl_give isl_map *read_var_def(struct isl_stream *s,
660 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
666 if (type == isl_dim_param)
667 pos = isl_map_dim(map, isl_dim_param);
669 pos = isl_map_dim(map, isl_dim_in);
670 if (type == isl_dim_out)
671 pos += isl_map_dim(map, isl_dim_out);
676 def = accept_extended_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
677 def_map = isl_map_from_pw_aff(def);
678 def_map = isl_map_equate(def_map, type, pos, isl_dim_out, 0);
679 def_map = isl_set_unwrap(isl_map_domain(def_map));
681 map = isl_map_intersect(map, def_map);
686 static __isl_give isl_map *read_var_list(struct isl_stream *s,
687 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
690 struct isl_token *tok;
692 if (isl_stream_next_token_is(s, ']'))
693 return isl_map_add_dims(map, type, 0);
695 while ((tok = next_token(s)) != NULL) {
698 if (tok->type == ISL_TOKEN_IDENT) {
700 int p = vars_pos(v, tok->u.s, -1);
707 map = isl_map_add_dims(map, type, 1);
708 map = set_name(map, type, i, v->v->name);
710 if (isl_stream_eat_if_available(s, '='))
711 map = read_var_def(s, map, type, v);
713 if (type == isl_dim_param) {
714 isl_stream_error(s, tok,
715 "expecting unique identifier");
718 isl_stream_push_token(s, tok);
720 if (vars_add_anon(v) < 0)
722 map = isl_map_add_dims(map, type, 1);
723 map = read_var_def(s, map, type, v);
726 tok = isl_stream_next_token(s);
727 if (tok && tok->type == ']' &&
728 isl_stream_next_token_is(s, '[')) {
730 tok = isl_stream_next_token(s);
731 } else if (!tok || tok->type != ',')
738 isl_stream_push_token(s, tok);
747 static __isl_give isl_pw_aff_list *accept_affine_list(struct isl_stream *s,
748 __isl_take isl_space *dim, struct vars *v)
751 isl_pw_aff_list *list;
752 struct isl_token *tok = NULL;
754 pwaff = accept_affine(s, isl_space_copy(dim), v);
755 list = isl_pw_aff_list_from_pw_aff(pwaff);
760 tok = isl_stream_next_token(s);
762 isl_stream_error(s, NULL, "unexpected EOF");
765 if (tok->type != ',') {
766 isl_stream_push_token(s, tok);
771 pwaff = accept_affine(s, isl_space_copy(dim), v);
772 list = isl_pw_aff_list_concat(list,
773 isl_pw_aff_list_from_pw_aff(pwaff));
782 isl_pw_aff_list_free(list);
786 static __isl_give isl_map *read_defined_var_list(struct isl_stream *s,
787 struct vars *v, __isl_take isl_map *map)
789 struct isl_token *tok;
791 while ((tok = isl_stream_next_token(s)) != NULL) {
795 if (tok->type != ISL_TOKEN_IDENT)
798 p = vars_pos(v, tok->u.s, -1);
802 isl_stream_error(s, tok, "expecting unique identifier");
806 map = isl_map_add_dims(map, isl_dim_out, 1);
809 tok = isl_stream_next_token(s);
810 if (tok && tok->type == '=') {
812 map = read_var_def(s, map, isl_dim_out, v);
813 tok = isl_stream_next_token(s);
816 if (!tok || tok->type != ',')
822 isl_stream_push_token(s, tok);
831 static int next_is_tuple(struct isl_stream *s)
833 struct isl_token *tok;
836 tok = isl_stream_next_token(s);
839 if (tok->type == '[') {
840 isl_stream_push_token(s, tok);
843 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
844 isl_stream_push_token(s, tok);
848 is_tuple = isl_stream_next_token_is(s, '[');
850 isl_stream_push_token(s, tok);
855 static __isl_give isl_map *read_tuple(struct isl_stream *s,
856 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v);
858 static __isl_give isl_set *read_nested_tuple(struct isl_stream *s,
859 __isl_take isl_map *map, struct vars *v)
861 map = read_tuple(s, map, isl_dim_in, v);
862 if (isl_stream_eat(s, ISL_TOKEN_TO))
864 map = read_tuple(s, map, isl_dim_out, v);
865 return isl_map_wrap(map);
871 static __isl_give isl_map *read_tuple(struct isl_stream *s,
872 __isl_take isl_map *map, enum isl_dim_type type, struct vars *v)
874 struct isl_token *tok;
877 tok = isl_stream_next_token(s);
878 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
879 name = strdup(tok->u.s);
883 tok = isl_stream_next_token(s);
885 if (!tok || tok->type != '[') {
886 isl_stream_error(s, tok, "expecting '['");
890 if (type != isl_dim_param && next_is_tuple(s)) {
891 isl_space *dim = isl_map_get_space(map);
892 int nparam = isl_space_dim(dim, isl_dim_param);
893 int n_in = isl_space_dim(dim, isl_dim_in);
895 if (type == isl_dim_out) {
896 dim = isl_space_move_dims(dim, isl_dim_param, nparam,
897 isl_dim_in, 0, n_in);
898 dim = isl_space_params(dim);
900 nested = read_nested_tuple(s, isl_map_universe(dim), v);
901 if (type == isl_dim_in) {
902 nested = isl_map_reverse(nested);
903 map = isl_map_intersect_params(nested, map);
906 dim = isl_set_get_space(nested);
907 dim = isl_space_drop_dims(dim, isl_dim_param, nparam, n_in);
908 dim = isl_space_join(isl_map_get_space(map), dim);
909 set = isl_map_domain(map);
910 nested = isl_map_reset_space(nested, dim);
911 map = isl_map_intersect_domain(nested, set);
914 map = read_var_list(s, map, type, v);
915 tok = isl_stream_next_token(s);
916 if (!tok || tok->type != ']') {
917 isl_stream_error(s, tok, "expecting ']'");
923 map = isl_map_set_tuple_name(map, type, name);
935 static __isl_give isl_set *construct_constraints(
936 __isl_take isl_set *set, enum isl_token_type type,
937 __isl_keep isl_pw_aff_list *left, __isl_keep isl_pw_aff_list *right)
941 if (type == ISL_TOKEN_LE)
942 cond = isl_pw_aff_list_le_set(isl_pw_aff_list_copy(left),
943 isl_pw_aff_list_copy(right));
944 else if (type == ISL_TOKEN_GE)
945 cond = isl_pw_aff_list_ge_set(isl_pw_aff_list_copy(left),
946 isl_pw_aff_list_copy(right));
947 else if (type == ISL_TOKEN_LT)
948 cond = isl_pw_aff_list_lt_set(isl_pw_aff_list_copy(left),
949 isl_pw_aff_list_copy(right));
950 else if (type == ISL_TOKEN_GT)
951 cond = isl_pw_aff_list_gt_set(isl_pw_aff_list_copy(left),
952 isl_pw_aff_list_copy(right));
953 else if (type == ISL_TOKEN_NE)
954 cond = isl_pw_aff_list_ne_set(isl_pw_aff_list_copy(left),
955 isl_pw_aff_list_copy(right));
957 cond = isl_pw_aff_list_eq_set(isl_pw_aff_list_copy(left),
958 isl_pw_aff_list_copy(right));
960 return isl_set_intersect(set, cond);
963 static __isl_give isl_map *add_constraint(struct isl_stream *s,
964 struct vars *v, __isl_take isl_map *map)
966 struct isl_token *tok = NULL;
967 isl_pw_aff_list *list1 = NULL, *list2 = NULL;
970 set = isl_map_wrap(map);
971 list1 = accept_affine_list(s, isl_set_get_space(set), v);
974 tok = isl_stream_next_token(s);
975 if (!is_comparator(tok)) {
976 isl_stream_error(s, tok, "missing operator");
978 isl_stream_push_token(s, tok);
983 list2 = accept_affine_list(s, isl_set_get_space(set), v);
987 set = construct_constraints(set, tok->type, list1, list2);
989 isl_pw_aff_list_free(list1);
992 tok = isl_stream_next_token(s);
993 if (!is_comparator(tok)) {
995 isl_stream_push_token(s, tok);
999 isl_pw_aff_list_free(list1);
1001 return isl_set_unwrap(set);
1004 isl_token_free(tok);
1005 isl_pw_aff_list_free(list1);
1006 isl_pw_aff_list_free(list2);
1011 static __isl_give isl_map *read_exists(struct isl_stream *s,
1012 struct vars *v, __isl_take isl_map *map)
1015 int seen_paren = isl_stream_eat_if_available(s, '(');
1017 map = isl_map_from_domain(isl_map_wrap(map));
1018 map = read_defined_var_list(s, v, map);
1020 if (isl_stream_eat(s, ':'))
1023 map = read_disjuncts(s, v, map);
1024 map = isl_set_unwrap(isl_map_domain(map));
1026 vars_drop(v, v->n - n);
1027 if (seen_paren && isl_stream_eat(s, ')'))
1036 /* Parse an expression between parentheses and push the result
1037 * back on the stream.
1039 * The parsed expression may be either an affine expression
1040 * or a condition. The first type is pushed onto the stream
1041 * as an isl_pw_aff, while the second is pushed as an isl_map.
1043 * If the initial token indicates the start of a condition,
1044 * we parse it as such.
1045 * Otherwise, we first parse an affine expression and push
1046 * that onto the stream. If the affine expression covers the
1047 * entire expression between parentheses, we return.
1048 * Otherwise, we assume that the affine expression is the
1049 * start of a condition and continue parsing.
1051 static int resolve_paren_expr(struct isl_stream *s,
1052 struct vars *v, __isl_take isl_map *map)
1054 struct isl_token *tok, *tok2;
1058 tok = isl_stream_next_token(s);
1059 if (!tok || tok->type != '(')
1062 if (isl_stream_next_token_is(s, '('))
1063 if (resolve_paren_expr(s, v, isl_map_copy(map)))
1066 if (isl_stream_next_token_is(s, ISL_TOKEN_EXISTS) ||
1067 isl_stream_next_token_is(s, ISL_TOKEN_NOT) ||
1068 isl_stream_next_token_is(s, ISL_TOKEN_TRUE) ||
1069 isl_stream_next_token_is(s, ISL_TOKEN_FALSE) ||
1070 isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1071 map = read_disjuncts(s, v, map);
1072 if (isl_stream_eat(s, ')'))
1074 tok->type = ISL_TOKEN_MAP;
1076 isl_stream_push_token(s, tok);
1080 tok2 = isl_stream_next_token(s);
1085 isl_stream_push_token(s, tok2);
1087 pwaff = accept_affine(s, isl_space_wrap(isl_map_get_space(map)), v);
1091 tok2 = isl_token_new(s->ctx, line, col, 0);
1094 tok2->type = ISL_TOKEN_AFF;
1095 tok2->u.pwaff = pwaff;
1097 if (isl_stream_eat_if_available(s, ')')) {
1098 isl_stream_push_token(s, tok2);
1099 isl_token_free(tok);
1104 isl_stream_push_token(s, tok2);
1106 map = read_disjuncts(s, v, map);
1107 if (isl_stream_eat(s, ')'))
1110 tok->type = ISL_TOKEN_MAP;
1112 isl_stream_push_token(s, tok);
1116 isl_pw_aff_free(pwaff);
1118 isl_token_free(tok);
1123 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1124 struct vars *v, __isl_take isl_map *map)
1126 if (isl_stream_next_token_is(s, '('))
1127 if (resolve_paren_expr(s, v, isl_map_copy(map)))
1130 if (isl_stream_next_token_is(s, ISL_TOKEN_MAP)) {
1131 struct isl_token *tok;
1132 tok = isl_stream_next_token(s);
1136 map = isl_map_copy(tok->u.map);
1137 isl_token_free(tok);
1141 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1142 return read_exists(s, v, map);
1144 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1147 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1148 isl_space *dim = isl_map_get_space(map);
1150 return isl_map_empty(dim);
1153 return add_constraint(s, v, map);
1159 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1160 struct vars *v, __isl_take isl_map *map)
1165 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1166 res = read_conjunct(s, v, isl_map_copy(map));
1168 res = isl_map_subtract(isl_map_copy(map), res);
1170 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1173 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1174 res_i = read_conjunct(s, v, isl_map_copy(map));
1176 res = isl_map_subtract(res, res_i);
1178 res = isl_map_intersect(res, res_i);
1185 static struct isl_map *read_disjuncts(struct isl_stream *s,
1186 struct vars *v, __isl_take isl_map *map)
1190 if (isl_stream_next_token_is(s, '}')) {
1191 isl_space *dim = isl_map_get_space(map);
1193 return isl_map_universe(dim);
1196 res = read_conjuncts(s, v, isl_map_copy(map));
1197 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1200 res_i = read_conjuncts(s, v, isl_map_copy(map));
1201 res = isl_map_union(res, res_i);
1208 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1210 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1211 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1212 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1213 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1215 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1216 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1217 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1219 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1220 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1221 isl_basic_map_dim(bmap, isl_dim_in) +
1222 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1223 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1225 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1231 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1232 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1235 struct isl_token *tok;
1245 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1246 dim = isl_basic_map_dim(bmap, isl_dim_out);
1248 tok = isl_stream_next_token(s);
1249 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1250 isl_stream_error(s, tok, "expecting coefficient");
1252 isl_stream_push_token(s, tok);
1255 if (!tok->on_new_line) {
1256 isl_stream_error(s, tok, "coefficient should appear on new line");
1257 isl_stream_push_token(s, tok);
1261 type = isl_int_get_si(tok->u.v);
1262 isl_token_free(tok);
1264 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1266 k = isl_basic_map_alloc_equality(bmap);
1269 k = isl_basic_map_alloc_inequality(bmap);
1275 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1277 tok = isl_stream_next_token(s);
1278 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1279 isl_stream_error(s, tok, "expecting coefficient");
1281 isl_stream_push_token(s, tok);
1284 if (tok->on_new_line) {
1285 isl_stream_error(s, tok,
1286 "coefficient should not appear on new line");
1287 isl_stream_push_token(s, tok);
1290 pos = polylib_pos_to_isl_pos(bmap, j);
1291 isl_int_set(c[pos], tok->u.v);
1292 isl_token_free(tok);
1297 isl_basic_map_free(bmap);
1301 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s)
1304 struct isl_token *tok;
1305 struct isl_token *tok2;
1308 unsigned in = 0, out, local = 0;
1309 struct isl_basic_map *bmap = NULL;
1312 tok = isl_stream_next_token(s);
1314 isl_stream_error(s, NULL, "unexpected EOF");
1317 tok2 = isl_stream_next_token(s);
1319 isl_token_free(tok);
1320 isl_stream_error(s, NULL, "unexpected EOF");
1323 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1324 isl_stream_push_token(s, tok2);
1325 isl_stream_push_token(s, tok);
1326 isl_stream_error(s, NULL,
1327 "expecting constraint matrix dimensions");
1330 n_row = isl_int_get_si(tok->u.v);
1331 n_col = isl_int_get_si(tok2->u.v);
1332 on_new_line = tok2->on_new_line;
1333 isl_token_free(tok2);
1334 isl_token_free(tok);
1335 isl_assert(s->ctx, !on_new_line, return NULL);
1336 isl_assert(s->ctx, n_row >= 0, return NULL);
1337 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1338 tok = isl_stream_next_token_on_same_line(s);
1340 if (tok->type != ISL_TOKEN_VALUE) {
1341 isl_stream_error(s, tok,
1342 "expecting number of output dimensions");
1343 isl_stream_push_token(s, tok);
1346 out = isl_int_get_si(tok->u.v);
1347 isl_token_free(tok);
1349 tok = isl_stream_next_token_on_same_line(s);
1350 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1351 isl_stream_error(s, tok,
1352 "expecting number of input dimensions");
1354 isl_stream_push_token(s, tok);
1357 in = isl_int_get_si(tok->u.v);
1358 isl_token_free(tok);
1360 tok = isl_stream_next_token_on_same_line(s);
1361 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1362 isl_stream_error(s, tok,
1363 "expecting number of existentials");
1365 isl_stream_push_token(s, tok);
1368 local = isl_int_get_si(tok->u.v);
1369 isl_token_free(tok);
1371 tok = isl_stream_next_token_on_same_line(s);
1372 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1373 isl_stream_error(s, tok,
1374 "expecting number of parameters");
1376 isl_stream_push_token(s, tok);
1379 nparam = isl_int_get_si(tok->u.v);
1380 isl_token_free(tok);
1381 if (n_col != 1 + out + in + local + nparam + 1) {
1382 isl_stream_error(s, NULL,
1383 "dimensions don't match");
1387 out = n_col - 2 - nparam;
1388 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1392 for (i = 0; i < local; ++i) {
1393 int k = isl_basic_map_alloc_div(bmap);
1396 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1399 for (i = 0; i < n_row; ++i)
1400 bmap = basic_map_read_polylib_constraint(s, bmap);
1402 tok = isl_stream_next_token_on_same_line(s);
1404 isl_stream_error(s, tok, "unexpected extra token on line");
1405 isl_stream_push_token(s, tok);
1409 bmap = isl_basic_map_simplify(bmap);
1410 bmap = isl_basic_map_finalize(bmap);
1413 isl_basic_map_free(bmap);
1417 static struct isl_map *map_read_polylib(struct isl_stream *s)
1419 struct isl_token *tok;
1420 struct isl_token *tok2;
1422 struct isl_map *map;
1424 tok = isl_stream_next_token(s);
1426 isl_stream_error(s, NULL, "unexpected EOF");
1429 tok2 = isl_stream_next_token_on_same_line(s);
1430 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1431 isl_stream_push_token(s, tok2);
1432 isl_stream_push_token(s, tok);
1433 return isl_map_from_basic_map(basic_map_read_polylib(s));
1436 isl_stream_error(s, tok2, "unexpected token");
1437 isl_stream_push_token(s, tok2);
1438 isl_stream_push_token(s, tok);
1441 n = isl_int_get_si(tok->u.v);
1442 isl_token_free(tok);
1444 isl_assert(s->ctx, n >= 1, return NULL);
1446 map = isl_map_from_basic_map(basic_map_read_polylib(s));
1448 for (i = 1; map && i < n; ++i)
1449 map = isl_map_union(map,
1450 isl_map_from_basic_map(basic_map_read_polylib(s)));
1455 static int optional_power(struct isl_stream *s)
1458 struct isl_token *tok;
1460 tok = isl_stream_next_token(s);
1463 if (tok->type != '^') {
1464 isl_stream_push_token(s, tok);
1467 isl_token_free(tok);
1468 tok = isl_stream_next_token(s);
1469 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1470 isl_stream_error(s, tok, "expecting exponent");
1472 isl_stream_push_token(s, tok);
1475 pow = isl_int_get_si(tok->u.v);
1476 isl_token_free(tok);
1480 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1481 __isl_keep isl_map *map, struct vars *v);
1483 static __isl_give isl_pw_qpolynomial *read_factor(struct isl_stream *s,
1484 __isl_keep isl_map *map, struct vars *v)
1486 isl_pw_qpolynomial *pwqp;
1487 struct isl_token *tok;
1489 tok = next_token(s);
1491 isl_stream_error(s, NULL, "unexpected EOF");
1494 if (tok->type == '(') {
1497 isl_token_free(tok);
1498 pwqp = read_term(s, map, v);
1501 if (isl_stream_eat(s, ')'))
1503 pow = optional_power(s);
1504 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1505 } else if (tok->type == ISL_TOKEN_VALUE) {
1506 struct isl_token *tok2;
1507 tok2 = isl_stream_next_token(s);
1508 isl_qpolynomial *qp;
1509 if (tok2 && tok2->type == '/') {
1510 isl_token_free(tok2);
1511 tok2 = next_token(s);
1512 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1513 isl_stream_error(s, tok2, "expected denominator");
1514 isl_token_free(tok);
1515 isl_token_free(tok2);
1518 qp = isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map),
1519 tok->u.v, tok2->u.v);
1520 isl_token_free(tok2);
1522 isl_stream_push_token(s, tok2);
1523 qp = isl_qpolynomial_cst_on_domain(isl_map_get_space(map),
1526 isl_token_free(tok);
1527 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1528 } else if (tok->type == ISL_TOKEN_INFTY) {
1529 isl_qpolynomial *qp;
1530 isl_token_free(tok);
1531 qp = isl_qpolynomial_infty_on_domain(isl_map_get_space(map));
1532 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1533 } else if (tok->type == ISL_TOKEN_NAN) {
1534 isl_qpolynomial *qp;
1535 isl_token_free(tok);
1536 qp = isl_qpolynomial_nan_on_domain(isl_map_get_space(map));
1537 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1538 } else if (tok->type == ISL_TOKEN_IDENT) {
1540 int pos = vars_pos(v, tok->u.s, -1);
1542 isl_qpolynomial *qp;
1544 isl_token_free(tok);
1548 vars_drop(v, v->n - n);
1549 isl_stream_error(s, tok, "unknown identifier");
1550 isl_token_free(tok);
1553 isl_token_free(tok);
1554 pow = optional_power(s);
1555 qp = isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map), pos, pow);
1556 pwqp = isl_pw_qpolynomial_from_qpolynomial(qp);
1557 } else if (tok->type == '[') {
1561 isl_stream_push_token(s, tok);
1562 pwaff = accept_div(s, isl_map_get_space(map), v);
1563 pow = optional_power(s);
1564 pwqp = isl_pw_qpolynomial_from_pw_aff(pwaff);
1565 pwqp = isl_pw_qpolynomial_pow(pwqp, pow);
1566 } else if (tok->type == '-') {
1567 isl_token_free(tok);
1568 pwqp = read_factor(s, map, v);
1569 pwqp = isl_pw_qpolynomial_neg(pwqp);
1571 isl_stream_error(s, tok, "unexpected isl_token");
1572 isl_stream_push_token(s, tok);
1576 if (isl_stream_eat_if_available(s, '*') ||
1577 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1578 isl_pw_qpolynomial *pwqp2;
1580 pwqp2 = read_factor(s, map, v);
1581 pwqp = isl_pw_qpolynomial_mul(pwqp, pwqp2);
1586 isl_pw_qpolynomial_free(pwqp);
1590 static __isl_give isl_pw_qpolynomial *read_term(struct isl_stream *s,
1591 __isl_keep isl_map *map, struct vars *v)
1593 struct isl_token *tok;
1594 isl_pw_qpolynomial *pwqp;
1596 pwqp = read_factor(s, map, v);
1599 tok = next_token(s);
1603 if (tok->type == '+') {
1604 isl_pw_qpolynomial *pwqp2;
1606 isl_token_free(tok);
1607 pwqp2 = read_factor(s, map, v);
1608 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1609 } else if (tok->type == '-') {
1610 isl_pw_qpolynomial *pwqp2;
1612 isl_token_free(tok);
1613 pwqp2 = read_factor(s, map, v);
1614 pwqp = isl_pw_qpolynomial_sub(pwqp, pwqp2);
1615 } else if (tok->type == ISL_TOKEN_VALUE &&
1616 isl_int_is_neg(tok->u.v)) {
1617 isl_pw_qpolynomial *pwqp2;
1619 isl_stream_push_token(s, tok);
1620 pwqp2 = read_factor(s, map, v);
1621 pwqp = isl_pw_qpolynomial_add(pwqp, pwqp2);
1623 isl_stream_push_token(s, tok);
1631 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1632 __isl_take isl_map *map, struct vars *v)
1634 struct isl_token *tok;
1636 tok = isl_stream_next_token(s);
1638 isl_stream_error(s, NULL, "unexpected EOF");
1641 if (tok->type == ':' ||
1642 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1643 isl_token_free(tok);
1644 map = read_disjuncts(s, v, map);
1646 isl_stream_push_token(s, tok);
1654 static struct isl_obj obj_read_poly(struct isl_stream *s,
1655 __isl_take isl_map *map, struct vars *v, int n)
1657 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1658 isl_pw_qpolynomial *pwqp;
1659 struct isl_set *set;
1661 pwqp = read_term(s, map, v);
1662 map = read_optional_disjuncts(s, map, v);
1663 set = isl_map_range(map);
1665 pwqp = isl_pw_qpolynomial_intersect_domain(pwqp, set);
1667 vars_drop(v, v->n - n);
1673 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1674 __isl_take isl_set *set, struct vars *v, int n)
1676 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1677 isl_pw_qpolynomial *pwqp;
1678 isl_pw_qpolynomial_fold *pwf = NULL;
1680 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1681 return obj_read_poly(s, set, v, n);
1683 if (isl_stream_eat(s, '('))
1686 pwqp = read_term(s, set, v);
1687 pwf = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max, pwqp);
1689 while (isl_stream_eat_if_available(s, ',')) {
1690 isl_pw_qpolynomial_fold *pwf_i;
1691 pwqp = read_term(s, set, v);
1692 pwf_i = isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max,
1694 pwf = isl_pw_qpolynomial_fold_fold(pwf, pwf_i);
1697 if (isl_stream_eat(s, ')'))
1700 set = read_optional_disjuncts(s, set, v);
1701 pwf = isl_pw_qpolynomial_fold_intersect_domain(pwf, set);
1703 vars_drop(v, v->n - n);
1709 isl_pw_qpolynomial_fold_free(pwf);
1710 obj.type = isl_obj_none;
1714 static int is_rational(struct isl_stream *s)
1716 struct isl_token *tok;
1718 tok = isl_stream_next_token(s);
1721 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1722 isl_token_free(tok);
1723 isl_stream_eat(s, ':');
1727 isl_stream_push_token(s, tok);
1732 static struct isl_obj obj_read_body(struct isl_stream *s,
1733 __isl_take isl_map *map, struct vars *v)
1735 struct isl_token *tok;
1736 struct isl_obj obj = { isl_obj_set, NULL };
1740 map = isl_map_set_rational(map);
1742 if (isl_stream_next_token_is(s, ':')) {
1743 obj.type = isl_obj_set;
1744 obj.v = read_optional_disjuncts(s, map, v);
1748 if (!next_is_tuple(s))
1749 return obj_read_poly_or_fold(s, map, v, n);
1751 map = read_tuple(s, map, isl_dim_in, v);
1754 tok = isl_stream_next_token(s);
1755 if (tok && tok->type == ISL_TOKEN_TO) {
1756 obj.type = isl_obj_map;
1757 isl_token_free(tok);
1758 if (!next_is_tuple(s)) {
1759 isl_set *set = isl_map_domain(map);
1760 return obj_read_poly_or_fold(s, set, v, n);
1762 map = read_tuple(s, map, isl_dim_out, v);
1766 map = isl_map_reverse(map);
1768 isl_stream_push_token(s, tok);
1771 map = read_optional_disjuncts(s, map, v);
1773 vars_drop(v, v->n - n);
1779 obj.type = isl_obj_none;
1783 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
1785 if (obj.type == isl_obj_map) {
1786 obj.v = isl_union_map_from_map(obj.v);
1787 obj.type = isl_obj_union_map;
1788 } else if (obj.type == isl_obj_set) {
1789 obj.v = isl_union_set_from_set(obj.v);
1790 obj.type = isl_obj_union_set;
1791 } else if (obj.type == isl_obj_pw_qpolynomial) {
1792 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
1793 obj.type = isl_obj_union_pw_qpolynomial;
1794 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
1795 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
1796 obj.type = isl_obj_union_pw_qpolynomial_fold;
1798 isl_assert(ctx, 0, goto error);
1801 obj.type->free(obj.v);
1802 obj.type = isl_obj_none;
1806 static struct isl_obj obj_add(struct isl_ctx *ctx,
1807 struct isl_obj obj1, struct isl_obj obj2)
1809 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
1810 obj1 = to_union(ctx, obj1);
1811 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
1812 obj2 = to_union(ctx, obj2);
1813 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
1814 obj1 = to_union(ctx, obj1);
1815 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
1816 obj2 = to_union(ctx, obj2);
1817 if (obj1.type == isl_obj_pw_qpolynomial &&
1818 obj2.type == isl_obj_union_pw_qpolynomial)
1819 obj1 = to_union(ctx, obj1);
1820 if (obj1.type == isl_obj_union_pw_qpolynomial &&
1821 obj2.type == isl_obj_pw_qpolynomial)
1822 obj2 = to_union(ctx, obj2);
1823 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1824 obj2.type == isl_obj_union_pw_qpolynomial_fold)
1825 obj1 = to_union(ctx, obj1);
1826 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
1827 obj2.type == isl_obj_pw_qpolynomial_fold)
1828 obj2 = to_union(ctx, obj2);
1829 isl_assert(ctx, obj1.type == obj2.type, goto error);
1830 if (obj1.type == isl_obj_map && !isl_map_has_equal_space(obj1.v, obj2.v)) {
1831 obj1 = to_union(ctx, obj1);
1832 obj2 = to_union(ctx, obj2);
1834 if (obj1.type == isl_obj_set && !isl_set_has_equal_space(obj1.v, obj2.v)) {
1835 obj1 = to_union(ctx, obj1);
1836 obj2 = to_union(ctx, obj2);
1838 if (obj1.type == isl_obj_pw_qpolynomial &&
1839 !isl_pw_qpolynomial_has_equal_space(obj1.v, obj2.v)) {
1840 obj1 = to_union(ctx, obj1);
1841 obj2 = to_union(ctx, obj2);
1843 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
1844 !isl_pw_qpolynomial_fold_has_equal_space(obj1.v, obj2.v)) {
1845 obj1 = to_union(ctx, obj1);
1846 obj2 = to_union(ctx, obj2);
1848 obj1.v = obj1.type->add(obj1.v, obj2.v);
1851 obj1.type->free(obj1.v);
1852 obj2.type->free(obj2.v);
1853 obj1.type = isl_obj_none;
1858 static struct isl_obj obj_read(struct isl_stream *s)
1860 isl_map *map = NULL;
1861 struct isl_token *tok;
1862 struct vars *v = NULL;
1863 struct isl_obj obj = { isl_obj_set, NULL };
1865 tok = next_token(s);
1867 isl_stream_error(s, NULL, "unexpected EOF");
1870 if (tok->type == ISL_TOKEN_VALUE) {
1871 struct isl_token *tok2;
1872 struct isl_map *map;
1874 tok2 = isl_stream_next_token(s);
1875 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
1876 isl_int_is_neg(tok2->u.v)) {
1878 isl_stream_push_token(s, tok2);
1879 obj.type = isl_obj_int;
1880 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
1881 isl_token_free(tok);
1884 isl_stream_push_token(s, tok2);
1885 isl_stream_push_token(s, tok);
1886 map = map_read_polylib(s);
1889 if (isl_map_may_be_set(map))
1890 obj.v = isl_map_range(map);
1892 obj.type = isl_obj_map;
1897 v = vars_new(s->ctx);
1899 isl_stream_push_token(s, tok);
1902 map = isl_map_universe(isl_space_params_alloc(s->ctx, 0));
1903 if (tok->type == '[') {
1904 isl_stream_push_token(s, tok);
1905 map = read_tuple(s, map, isl_dim_param, v);
1908 tok = isl_stream_next_token(s);
1909 if (!tok || tok->type != ISL_TOKEN_TO) {
1910 isl_stream_error(s, tok, "expecting '->'");
1912 isl_stream_push_token(s, tok);
1915 isl_token_free(tok);
1916 tok = isl_stream_next_token(s);
1918 if (!tok || tok->type != '{') {
1919 isl_stream_error(s, tok, "expecting '{'");
1921 isl_stream_push_token(s, tok);
1924 isl_token_free(tok);
1926 tok = isl_stream_next_token(s);
1929 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
1930 isl_token_free(tok);
1931 if (isl_stream_eat(s, '='))
1933 map = read_tuple(s, map, isl_dim_param, v);
1936 } else if (tok->type == '}') {
1937 obj.type = isl_obj_union_set;
1938 obj.v = isl_union_set_empty(isl_map_get_space(map));
1939 isl_token_free(tok);
1942 isl_stream_push_token(s, tok);
1947 o = obj_read_body(s, isl_map_copy(map), v);
1948 if (o.type == isl_obj_none || !o.v)
1953 obj = obj_add(s->ctx, obj, o);
1954 if (obj.type == isl_obj_none || !obj.v)
1957 tok = isl_stream_next_token(s);
1958 if (!tok || tok->type != ';')
1960 isl_token_free(tok);
1961 if (isl_stream_next_token_is(s, '}')) {
1962 tok = isl_stream_next_token(s);
1967 if (tok && tok->type == '}') {
1968 isl_token_free(tok);
1970 isl_stream_error(s, tok, "unexpected isl_token");
1972 isl_token_free(tok);
1982 obj.type->free(obj.v);
1989 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
1994 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s)
2000 isl_assert(s->ctx, obj.type == isl_obj_map ||
2001 obj.type == isl_obj_set, goto error);
2005 obj.type->free(obj.v);
2009 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s)
2015 if (obj.type == isl_obj_map && isl_map_may_be_set(obj.v)) {
2016 obj.v = isl_map_range(obj.v);
2017 obj.type = isl_obj_set;
2019 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2024 obj.type->free(obj.v);
2028 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2033 if (obj.type == isl_obj_map) {
2034 obj.type = isl_obj_union_map;
2035 obj.v = isl_union_map_from_map(obj.v);
2037 if (obj.type == isl_obj_set) {
2038 obj.type = isl_obj_union_set;
2039 obj.v = isl_union_set_from_set(obj.v);
2042 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
2043 obj.type == isl_obj_union_set, goto error);
2047 obj.type->free(obj.v);
2051 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2056 if (obj.type == isl_obj_set) {
2057 obj.type = isl_obj_union_set;
2058 obj.v = isl_union_set_from_set(obj.v);
2061 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2065 obj.type->free(obj.v);
2069 static __isl_give isl_basic_map *basic_map_read(struct isl_stream *s)
2072 struct isl_map *map;
2073 struct isl_basic_map *bmap;
2080 isl_assert(map->ctx, map->n <= 1, goto error);
2083 bmap = isl_basic_map_empty_like_map(map);
2085 bmap = isl_basic_map_copy(map->p[0]);
2095 static __isl_give isl_basic_set *basic_set_read(struct isl_stream *s)
2097 isl_basic_map *bmap;
2098 bmap = basic_map_read(s);
2101 if (!isl_basic_map_may_be_set(bmap))
2102 isl_die(s->ctx, isl_error_invalid,
2103 "input is not a set", goto error);
2104 return isl_basic_map_range(bmap);
2106 isl_basic_map_free(bmap);
2110 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2113 struct isl_basic_map *bmap;
2114 struct isl_stream *s = isl_stream_new_file(ctx, input);
2117 bmap = basic_map_read(s);
2122 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2125 isl_basic_set *bset;
2126 struct isl_stream *s = isl_stream_new_file(ctx, input);
2129 bset = basic_set_read(s);
2134 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2137 struct isl_basic_map *bmap;
2138 struct isl_stream *s = isl_stream_new_str(ctx, str);
2141 bmap = basic_map_read(s);
2146 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2149 isl_basic_set *bset;
2150 struct isl_stream *s = isl_stream_new_str(ctx, str);
2153 bset = basic_set_read(s);
2158 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2161 struct isl_map *map;
2162 struct isl_stream *s = isl_stream_new_file(ctx, input);
2165 map = isl_stream_read_map(s);
2170 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2173 struct isl_map *map;
2174 struct isl_stream *s = isl_stream_new_str(ctx, str);
2177 map = isl_stream_read_map(s);
2182 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2186 struct isl_stream *s = isl_stream_new_file(ctx, input);
2189 set = isl_stream_read_set(s);
2194 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2198 struct isl_stream *s = isl_stream_new_str(ctx, str);
2201 set = isl_stream_read_set(s);
2206 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2209 isl_union_map *umap;
2210 struct isl_stream *s = isl_stream_new_file(ctx, input);
2213 umap = isl_stream_read_union_map(s);
2218 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2221 isl_union_map *umap;
2222 struct isl_stream *s = isl_stream_new_str(ctx, str);
2225 umap = isl_stream_read_union_map(s);
2230 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2233 isl_union_set *uset;
2234 struct isl_stream *s = isl_stream_new_file(ctx, input);
2237 uset = isl_stream_read_union_set(s);
2242 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2245 isl_union_set *uset;
2246 struct isl_stream *s = isl_stream_new_str(ctx, str);
2249 uset = isl_stream_read_union_set(s);
2254 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2256 struct isl_vec *vec = NULL;
2257 struct isl_token *tok;
2261 tok = isl_stream_next_token(s);
2262 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2263 isl_stream_error(s, tok, "expecting vector length");
2267 size = isl_int_get_si(tok->u.v);
2268 isl_token_free(tok);
2270 vec = isl_vec_alloc(s->ctx, size);
2272 for (j = 0; j < size; ++j) {
2273 tok = isl_stream_next_token(s);
2274 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2275 isl_stream_error(s, tok, "expecting constant value");
2278 isl_int_set(vec->el[j], tok->u.v);
2279 isl_token_free(tok);
2284 isl_token_free(tok);
2289 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2291 return isl_vec_read_polylib(s);
2294 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2297 struct isl_stream *s = isl_stream_new_file(ctx, input);
2305 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2306 struct isl_stream *s)
2312 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2317 obj.type->free(obj.v);
2321 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2324 isl_pw_qpolynomial *pwqp;
2325 struct isl_stream *s = isl_stream_new_str(ctx, str);
2328 pwqp = isl_stream_read_pw_qpolynomial(s);
2333 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_file(isl_ctx *ctx,
2336 isl_pw_qpolynomial *pwqp;
2337 struct isl_stream *s = isl_stream_new_file(ctx, input);
2340 pwqp = isl_stream_read_pw_qpolynomial(s);
2345 /* Read an affine expression from "s" with domain (space) "dom".
2346 * We call accept_affine to parse a possibly piecewise affine expression
2347 * and then check that the result is a single affine expression on
2348 * a universe domain.
2350 static __isl_give isl_aff *read_aff_with_dom(struct isl_stream *s,
2351 __isl_take isl_set *dom, struct vars *v)
2353 isl_aff *aff = NULL;
2354 isl_pw_aff *pwaff = NULL;
2356 if (!isl_set_plain_is_universe(dom))
2357 isl_die(s->ctx, isl_error_invalid,
2358 "expecting universe domain", goto error);
2360 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2363 if (isl_stream_eat(s, '['))
2366 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2368 if (isl_stream_eat(s, ']'))
2370 if (isl_stream_eat(s, '}'))
2377 isl_die(s->ctx, isl_error_invalid,
2378 "expecting single affine expression", goto error);
2379 if (!isl_set_plain_is_universe(pwaff->p[0].set))
2380 isl_die(s->ctx, isl_error_invalid,
2381 "expecting universe domain", goto error);
2383 aff = isl_aff_copy(pwaff->p[0].aff);
2386 isl_pw_aff_free(pwaff);
2391 isl_pw_aff_free(pwaff);
2396 /* Is the next token an identifer not in "v"?
2398 static int next_is_fresh_ident(struct isl_stream *s, struct vars *v)
2402 struct isl_token *tok;
2404 tok = isl_stream_next_token(s);
2407 fresh = tok->type == ISL_TOKEN_IDENT && vars_pos(v, tok->u.s, -1) >= n;
2408 isl_stream_push_token(s, tok);
2410 vars_drop(v, v->n - n);
2415 /* First read the domain of the affine expression, which may be
2416 * a parameter space or a set.
2417 * The tricky part is that we don't know if the domain is a set or not,
2418 * so when we are trying to read the domain, we may actually be reading
2419 * the affine expression itself (defined on a parameter domains)
2420 * If the tuple we are reading is named, we assume it's the domain.
2421 * Also, if inside the tuple, the first thing we find is a nested tuple
2422 * or a new identifier, we again assume it's the domain.
2423 * Otherwise, we assume we are reading an affine expression.
2425 static __isl_give isl_set *read_aff_domain(struct isl_stream *s,
2426 __isl_take isl_set *dom, struct vars *v)
2428 struct isl_token *tok;
2430 tok = isl_stream_next_token(s);
2431 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
2432 isl_stream_push_token(s, tok);
2433 return read_tuple(s, dom, isl_dim_set, v);
2435 if (!tok || tok->type != '[') {
2436 isl_stream_error(s, tok, "expecting '['");
2439 if (next_is_tuple(s) || next_is_fresh_ident(s, v)) {
2440 isl_stream_push_token(s, tok);
2441 dom = read_tuple(s, dom, isl_dim_set, v);
2443 isl_stream_push_token(s, tok);
2448 isl_stream_push_token(s, tok);
2454 /* Read an affine expression from "s".
2455 * We first read the domain of the affine expression, which may be
2456 * a parameter space or a set, and then call read_aff_with_dom.
2458 __isl_give isl_aff *isl_stream_read_aff(struct isl_stream *s)
2461 isl_set *dom = NULL;
2463 v = vars_new(s->ctx);
2467 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2468 if (next_is_tuple(s)) {
2469 dom = read_tuple(s, dom, isl_dim_param, v);
2470 if (isl_stream_eat(s, ISL_TOKEN_TO))
2473 if (isl_stream_eat(s, '{'))
2476 dom = read_aff_domain(s, dom, v);
2477 return read_aff_with_dom(s, dom, v);
2484 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2486 static __isl_give isl_pw_aff *read_pw_aff_with_dom(struct isl_stream *s,
2487 __isl_take isl_set *dom, struct vars *v)
2489 isl_pw_aff *pwaff = NULL;
2491 if (!isl_set_is_params(dom) && isl_stream_eat(s, ISL_TOKEN_TO))
2494 if (isl_stream_eat(s, '['))
2497 pwaff = accept_affine(s, isl_set_get_space(dom), v);
2499 if (isl_stream_eat(s, ']'))
2502 dom = read_optional_disjuncts(s, dom, v);
2503 pwaff = isl_pw_aff_intersect_domain(pwaff, dom);
2508 isl_pw_aff_free(pwaff);
2512 __isl_give isl_pw_aff *isl_stream_read_pw_aff(struct isl_stream *s)
2515 isl_set *dom = NULL;
2517 isl_pw_aff *pa = NULL;
2520 v = vars_new(s->ctx);
2524 dom = isl_set_universe(isl_space_params_alloc(s->ctx, 0));
2525 if (next_is_tuple(s)) {
2526 dom = read_tuple(s, dom, isl_dim_param, v);
2527 if (isl_stream_eat(s, ISL_TOKEN_TO))
2530 if (isl_stream_eat(s, '{'))
2534 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2535 pa = read_pw_aff_with_dom(s, aff_dom, v);
2536 vars_drop(v, v->n - n);
2538 while (isl_stream_eat_if_available(s, ';')) {
2542 aff_dom = read_aff_domain(s, isl_set_copy(dom), v);
2543 pa_i = read_pw_aff_with_dom(s, aff_dom, v);
2544 vars_drop(v, v->n - n);
2546 pa = isl_pw_aff_union_add(pa, pa_i);
2549 if (isl_stream_eat(s, '}'))
2558 isl_pw_aff_free(pa);
2562 __isl_give isl_aff *isl_aff_read_from_str(isl_ctx *ctx, const char *str)
2565 struct isl_stream *s = isl_stream_new_str(ctx, str);
2568 aff = isl_stream_read_aff(s);
2573 __isl_give isl_pw_aff *isl_pw_aff_read_from_str(isl_ctx *ctx, const char *str)
2576 struct isl_stream *s = isl_stream_new_str(ctx, str);
2579 pa = isl_stream_read_pw_aff(s);
2584 /* Read an isl_pw_multi_aff from "s".
2585 * We currently read a generic object and if it turns out to be a set or
2586 * a map, we convert that to an isl_pw_multi_aff.
2587 * It would be more efficient if we were to construct the isl_pw_multi_aff
2590 __isl_give isl_pw_multi_aff *isl_stream_read_pw_multi_aff(struct isl_stream *s)
2598 if (obj.type == isl_obj_map)
2599 return isl_pw_multi_aff_from_map(obj.v);
2600 if (obj.type == isl_obj_set)
2601 return isl_pw_multi_aff_from_set(obj.v);
2603 obj.type->free(obj.v);
2604 isl_die(s->ctx, isl_error_invalid, "unexpected object type",
2608 __isl_give isl_pw_multi_aff *isl_pw_multi_aff_read_from_str(isl_ctx *ctx,
2611 isl_pw_multi_aff *pma;
2612 struct isl_stream *s = isl_stream_new_str(ctx, str);
2615 pma = isl_stream_read_pw_multi_aff(s);
2620 /* Read a multi-affine expression from "s".
2621 * We call isl_stream_read_pw_multi_aff to parse a possibly piecewise
2622 * multi-affine expression and then check that the result is
2623 * a single multi-affine expression on a universe domain.
2625 __isl_give isl_multi_aff *isl_stream_read_multi_aff(struct isl_stream *s)
2627 isl_pw_multi_aff *pma;
2628 isl_multi_aff *maff;
2630 pma = isl_stream_read_pw_multi_aff(s);
2634 isl_die(s->ctx, isl_error_invalid,
2635 "expecting single list of affine expressions",
2636 return isl_pw_multi_aff_free(pma));
2637 if (!isl_set_plain_is_universe(pma->p[0].set))
2638 isl_die(s->ctx, isl_error_invalid, "expecting universe domain",
2639 return isl_pw_multi_aff_free(pma));
2640 maff = isl_multi_aff_copy(pma->p[0].maff);
2641 isl_pw_multi_aff_free(pma);
2645 __isl_give isl_multi_aff *isl_multi_aff_read_from_str(isl_ctx *ctx,
2648 isl_multi_aff *maff;
2649 struct isl_stream *s = isl_stream_new_str(ctx, str);
2652 maff = isl_stream_read_multi_aff(s);
2657 __isl_give isl_union_pw_qpolynomial *isl_stream_read_union_pw_qpolynomial(
2658 struct isl_stream *s)
2663 if (obj.type == isl_obj_pw_qpolynomial) {
2664 obj.type = isl_obj_union_pw_qpolynomial;
2665 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
2668 isl_assert(s->ctx, obj.type == isl_obj_union_pw_qpolynomial,
2673 obj.type->free(obj.v);
2677 __isl_give isl_union_pw_qpolynomial *isl_union_pw_qpolynomial_read_from_str(
2678 isl_ctx *ctx, const char *str)
2680 isl_union_pw_qpolynomial *upwqp;
2681 struct isl_stream *s = isl_stream_new_str(ctx, str);
2684 upwqp = isl_stream_read_union_pw_qpolynomial(s);