2 * Copyright 2008-2009 Katholieke Universiteit Leuven
3 * Copyright 2010 INRIA Saclay
4 * Copyright 2012 Ecole Normale Superieure
6 * Use of this software is governed by the MIT license
8 * Written by Sven Verdoolaege, K.U.Leuven, Departement
9 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
10 * and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
11 * ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
12 * and Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
18 #include <isl_ctx_private.h>
19 #include <isl_map_private.h>
22 #include <isl_stream_private.h>
24 #include "isl_polynomial_private.h"
25 #include <isl/union_map.h>
26 #include <isl_mat_private.h>
27 #include <isl_aff_private.h>
33 struct variable
*next
;
42 static struct vars
*vars_new(struct isl_ctx
*ctx
)
45 v
= isl_alloc_type(ctx
, struct vars
);
54 static void variable_free(struct variable
*var
)
57 struct variable
*next
= var
->next
;
64 static void vars_free(struct vars
*v
)
72 static void vars_drop(struct vars
*v
, int n
)
83 struct variable
*next
= var
->next
;
91 static struct variable
*variable_new(struct vars
*v
, const char *name
, int len
,
95 var
= isl_calloc_type(v
->ctx
, struct variable
);
98 var
->name
= strdup(name
);
99 var
->name
[len
] = '\0';
108 static int vars_pos(struct vars
*v
, const char *s
, int len
)
115 for (q
= v
->v
; q
; q
= q
->next
) {
116 if (strncmp(q
->name
, s
, len
) == 0 && q
->name
[len
] == '\0')
123 v
->v
= variable_new(v
, s
, len
, v
->n
);
131 static int vars_add_anon(struct vars
*v
)
133 v
->v
= variable_new(v
, "", 0, v
->n
);
142 /* Obtain next token, with some preprocessing.
143 * In particular, evaluate expressions of the form x^y,
144 * with x and y values.
146 static struct isl_token
*next_token(struct isl_stream
*s
)
148 struct isl_token
*tok
, *tok2
;
150 tok
= isl_stream_next_token(s
);
151 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
)
153 if (!isl_stream_eat_if_available(s
, '^'))
155 tok2
= isl_stream_next_token(s
);
156 if (!tok2
|| tok2
->type
!= ISL_TOKEN_VALUE
) {
157 isl_stream_error(s
, tok2
, "expecting constant value");
161 isl_int_pow_ui(tok
->u
.v
, tok
->u
.v
, isl_int_get_ui(tok2
->u
.v
));
163 isl_token_free(tok2
);
167 isl_token_free(tok2
);
171 static int accept_cst_factor(struct isl_stream
*s
, isl_int
*f
)
173 struct isl_token
*tok
;
176 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
177 isl_stream_error(s
, tok
, "expecting constant value");
181 isl_int_mul(*f
, *f
, tok
->u
.v
);
185 if (isl_stream_eat_if_available(s
, '*'))
186 return accept_cst_factor(s
, f
);
194 /* Given an affine expression aff, return an affine expression
195 * for aff % d, with d the next token on the stream, which is
196 * assumed to be a constant.
198 * We introduce an integer division q = [aff/d] and the result
199 * is set to aff - d q.
201 static __isl_give isl_pw_aff
*affine_mod(struct isl_stream
*s
,
202 struct vars
*v
, __isl_take isl_pw_aff
*aff
)
204 struct isl_token
*tok
;
208 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
209 isl_stream_error(s
, tok
, "expecting constant value");
213 q
= isl_pw_aff_copy(aff
);
214 q
= isl_pw_aff_scale_down(q
, tok
->u
.v
);
215 q
= isl_pw_aff_floor(q
);
216 q
= isl_pw_aff_scale(q
, tok
->u
.v
);
218 aff
= isl_pw_aff_sub(aff
, q
);
223 isl_pw_aff_free(aff
);
228 static __isl_give isl_pw_aff
*accept_affine(struct isl_stream
*s
,
229 __isl_take isl_space
*dim
, struct vars
*v
);
230 static __isl_give isl_pw_aff_list
*accept_affine_list(struct isl_stream
*s
,
231 __isl_take isl_space
*dim
, struct vars
*v
);
233 static __isl_give isl_pw_aff
*accept_minmax(struct isl_stream
*s
,
234 __isl_take isl_space
*dim
, struct vars
*v
)
236 struct isl_token
*tok
;
237 isl_pw_aff_list
*list
= NULL
;
240 tok
= isl_stream_next_token(s
);
243 min
= tok
->type
== ISL_TOKEN_MIN
;
246 if (isl_stream_eat(s
, '('))
249 list
= accept_affine_list(s
, isl_space_copy(dim
), v
);
253 if (isl_stream_eat(s
, ')'))
257 return min
? isl_pw_aff_list_min(list
) : isl_pw_aff_list_max(list
);
260 isl_pw_aff_list_free(list
);
264 static __isl_give isl_pw_aff
*accept_div(struct isl_stream
*s
,
265 __isl_take isl_space
*dim
, struct vars
*v
)
267 struct isl_token
*tok
;
270 isl_pw_aff
*pwaff
= NULL
;
272 if (isl_stream_eat_if_available(s
, ISL_TOKEN_FLOORD
))
274 else if (isl_stream_eat_if_available(s
, ISL_TOKEN_CEILD
))
277 if (isl_stream_eat(s
, '('))
280 if (isl_stream_eat(s
, '['))
284 pwaff
= accept_affine(s
, isl_space_copy(dim
), v
);
287 if (isl_stream_eat(s
, ','))
293 if (tok
->type
!= ISL_TOKEN_VALUE
) {
294 isl_stream_error(s
, tok
, "expected denominator");
295 isl_stream_push_token(s
, tok
);
298 isl_pw_aff_scale_down(pwaff
, tok
->u
.v
);
303 pwaff
= isl_pw_aff_ceil(pwaff
);
305 pwaff
= isl_pw_aff_floor(pwaff
);
308 if (isl_stream_eat(s
, ')'))
311 if (isl_stream_eat(s
, ']'))
319 isl_pw_aff_free(pwaff
);
323 static __isl_give isl_pw_aff
*accept_affine_factor(struct isl_stream
*s
,
324 __isl_take isl_space
*dim
, struct vars
*v
)
326 struct isl_token
*tok
= NULL
;
327 isl_pw_aff
*res
= NULL
;
331 isl_stream_error(s
, NULL
, "unexpected EOF");
335 if (tok
->type
== ISL_TOKEN_AFF
) {
336 res
= isl_pw_aff_copy(tok
->u
.pwaff
);
338 } else if (tok
->type
== ISL_TOKEN_IDENT
) {
340 int pos
= vars_pos(v
, tok
->u
.s
, -1);
346 isl_stream_error(s
, tok
, "unknown identifier");
350 aff
= isl_aff_zero_on_domain(isl_local_space_from_space(isl_space_copy(dim
)));
353 isl_int_set_si(aff
->v
->el
[2 + pos
], 1);
354 res
= isl_pw_aff_from_aff(aff
);
356 } else if (tok
->type
== ISL_TOKEN_VALUE
) {
357 if (isl_stream_eat_if_available(s
, '*')) {
358 res
= accept_affine_factor(s
, isl_space_copy(dim
), v
);
359 res
= isl_pw_aff_scale(res
, tok
->u
.v
);
363 ls
= isl_local_space_from_space(isl_space_copy(dim
));
364 aff
= isl_aff_zero_on_domain(ls
);
365 aff
= isl_aff_add_constant(aff
, tok
->u
.v
);
366 res
= isl_pw_aff_from_aff(aff
);
369 } else if (tok
->type
== '(') {
372 res
= accept_affine(s
, isl_space_copy(dim
), v
);
375 if (isl_stream_eat(s
, ')'))
377 } else if (tok
->type
== '[' ||
378 tok
->type
== ISL_TOKEN_FLOORD
||
379 tok
->type
== ISL_TOKEN_CEILD
) {
380 isl_stream_push_token(s
, tok
);
382 res
= accept_div(s
, isl_space_copy(dim
), v
);
383 } else if (tok
->type
== ISL_TOKEN_MIN
|| tok
->type
== ISL_TOKEN_MAX
) {
384 isl_stream_push_token(s
, tok
);
386 res
= accept_minmax(s
, isl_space_copy(dim
), v
);
388 isl_stream_error(s
, tok
, "expecting factor");
391 if (isl_stream_eat_if_available(s
, '%') ||
392 isl_stream_eat_if_available(s
, ISL_TOKEN_MOD
)) {
394 return affine_mod(s
, v
, res
);
396 if (isl_stream_eat_if_available(s
, '*')) {
399 isl_int_set_si(f
, 1);
400 if (accept_cst_factor(s
, &f
) < 0) {
404 res
= isl_pw_aff_scale(res
, f
);
407 if (isl_stream_eat_if_available(s
, '/')) {
410 isl_int_set_si(f
, 1);
411 if (accept_cst_factor(s
, &f
) < 0) {
415 res
= isl_pw_aff_scale_down(res
, f
);
424 isl_pw_aff_free(res
);
429 static __isl_give isl_pw_aff
*add_cst(__isl_take isl_pw_aff
*pwaff
, isl_int v
)
434 space
= isl_pw_aff_get_domain_space(pwaff
);
435 aff
= isl_aff_zero_on_domain(isl_local_space_from_space(space
));
436 aff
= isl_aff_add_constant(aff
, v
);
438 return isl_pw_aff_add(pwaff
, isl_pw_aff_from_aff(aff
));
441 static __isl_give isl_pw_aff
*accept_affine(struct isl_stream
*s
,
442 __isl_take isl_space
*dim
, struct vars
*v
)
444 struct isl_token
*tok
= NULL
;
449 ls
= isl_local_space_from_space(isl_space_copy(dim
));
450 res
= isl_pw_aff_from_aff(isl_aff_zero_on_domain(ls
));
457 isl_stream_error(s
, NULL
, "unexpected EOF");
460 if (tok
->type
== '-') {
465 if (tok
->type
== '(' || tok
->type
== '[' ||
466 tok
->type
== ISL_TOKEN_MIN
|| tok
->type
== ISL_TOKEN_MAX
||
467 tok
->type
== ISL_TOKEN_FLOORD
||
468 tok
->type
== ISL_TOKEN_CEILD
||
469 tok
->type
== ISL_TOKEN_IDENT
||
470 tok
->type
== ISL_TOKEN_AFF
) {
472 isl_stream_push_token(s
, tok
);
474 term
= accept_affine_factor(s
, isl_space_copy(dim
), v
);
476 res
= isl_pw_aff_sub(res
, term
);
478 res
= isl_pw_aff_add(res
, term
);
482 } else if (tok
->type
== ISL_TOKEN_VALUE
) {
484 isl_int_neg(tok
->u
.v
, tok
->u
.v
);
485 if (isl_stream_eat_if_available(s
, '*') ||
486 isl_stream_next_token_is(s
, ISL_TOKEN_IDENT
)) {
488 term
= accept_affine_factor(s
,
489 isl_space_copy(dim
), v
);
490 term
= isl_pw_aff_scale(term
, tok
->u
.v
);
491 res
= isl_pw_aff_add(res
, term
);
495 res
= add_cst(res
, tok
->u
.v
);
499 isl_stream_error(s
, tok
, "unexpected isl_token");
500 isl_stream_push_token(s
, tok
);
501 isl_pw_aff_free(res
);
508 if (tok
&& tok
->type
== '-') {
511 } else if (tok
&& tok
->type
== '+') {
514 } else if (tok
&& tok
->type
== ISL_TOKEN_VALUE
&&
515 isl_int_is_neg(tok
->u
.v
)) {
516 isl_stream_push_token(s
, tok
);
519 isl_stream_push_token(s
, tok
);
529 isl_pw_aff_free(res
);
533 static int is_comparator(struct isl_token
*tok
)
551 static struct isl_map
*read_disjuncts(struct isl_stream
*s
,
552 struct vars
*v
, __isl_take isl_map
*map
);
553 static __isl_give isl_pw_aff
*accept_extended_affine(struct isl_stream
*s
,
554 __isl_take isl_space
*dim
, struct vars
*v
);
556 /* Accept a ternary operator, given the first argument.
558 static __isl_give isl_pw_aff
*accept_ternary(struct isl_stream
*s
,
559 __isl_take isl_map
*cond
, struct vars
*v
)
562 isl_pw_aff
*pwaff1
= NULL
, *pwaff2
= NULL
, *pa_cond
;
567 if (isl_stream_eat(s
, '?'))
570 dim
= isl_space_wrap(isl_map_get_space(cond
));
571 pwaff1
= accept_extended_affine(s
, dim
, v
);
575 if (isl_stream_eat(s
, ':'))
578 dim
= isl_pw_aff_get_domain_space(pwaff1
);
579 pwaff2
= accept_extended_affine(s
, dim
, v
);
583 pa_cond
= isl_set_indicator_function(isl_map_wrap(cond
));
584 return isl_pw_aff_cond(pa_cond
, pwaff1
, pwaff2
);
587 isl_pw_aff_free(pwaff1
);
588 isl_pw_aff_free(pwaff2
);
592 /* Accept an affine expression that may involve ternary operators.
593 * We first read an affine expression.
594 * If it is not followed by a comparison operator, we simply return it.
595 * Otherwise, we assume the affine epxression is part of the first
596 * argument of a ternary operator and try to parse that.
598 static __isl_give isl_pw_aff
*accept_extended_affine(struct isl_stream
*s
,
599 __isl_take isl_space
*dim
, struct vars
*v
)
604 struct isl_token
*tok
;
605 int line
= -1, col
= -1;
608 tok
= isl_stream_next_token(s
);
612 isl_stream_push_token(s
, tok
);
615 pwaff
= accept_affine(s
, dim
, v
);
619 tok
= isl_stream_next_token(s
);
621 return isl_pw_aff_free(pwaff
);
623 is_comp
= is_comparator(tok
);
624 isl_stream_push_token(s
, tok
);
628 tok
= isl_token_new(s
->ctx
, line
, col
, 0);
630 return isl_pw_aff_free(pwaff
);
631 tok
->type
= ISL_TOKEN_AFF
;
632 tok
->u
.pwaff
= pwaff
;
634 space
= isl_pw_aff_get_domain_space(pwaff
);
635 cond
= isl_map_universe(isl_space_unwrap(space
));
637 isl_stream_push_token(s
, tok
);
639 cond
= read_disjuncts(s
, v
, cond
);
641 return accept_ternary(s
, cond
, v
);
644 static __isl_give isl_map
*read_var_def(struct isl_stream
*s
,
645 __isl_take isl_map
*map
, enum isl_dim_type type
, struct vars
*v
)
651 if (type
== isl_dim_param
)
652 pos
= isl_map_dim(map
, isl_dim_param
);
654 pos
= isl_map_dim(map
, isl_dim_in
);
655 if (type
== isl_dim_out
)
656 pos
+= isl_map_dim(map
, isl_dim_out
);
661 def
= accept_extended_affine(s
, isl_space_wrap(isl_map_get_space(map
)), v
);
662 def_map
= isl_map_from_pw_aff(def
);
663 def_map
= isl_map_equate(def_map
, type
, pos
, isl_dim_out
, 0);
664 def_map
= isl_set_unwrap(isl_map_domain(def_map
));
666 map
= isl_map_intersect(map
, def_map
);
671 static __isl_give isl_pw_aff_list
*accept_affine_list(struct isl_stream
*s
,
672 __isl_take isl_space
*dim
, struct vars
*v
)
675 isl_pw_aff_list
*list
;
676 struct isl_token
*tok
= NULL
;
678 pwaff
= accept_affine(s
, isl_space_copy(dim
), v
);
679 list
= isl_pw_aff_list_from_pw_aff(pwaff
);
684 tok
= isl_stream_next_token(s
);
686 isl_stream_error(s
, NULL
, "unexpected EOF");
689 if (tok
->type
!= ',') {
690 isl_stream_push_token(s
, tok
);
695 pwaff
= accept_affine(s
, isl_space_copy(dim
), v
);
696 list
= isl_pw_aff_list_concat(list
,
697 isl_pw_aff_list_from_pw_aff(pwaff
));
706 isl_pw_aff_list_free(list
);
710 static __isl_give isl_map
*read_defined_var_list(struct isl_stream
*s
,
711 struct vars
*v
, __isl_take isl_map
*map
)
713 struct isl_token
*tok
;
715 while ((tok
= isl_stream_next_token(s
)) != NULL
) {
719 if (tok
->type
!= ISL_TOKEN_IDENT
)
722 p
= vars_pos(v
, tok
->u
.s
, -1);
726 isl_stream_error(s
, tok
, "expecting unique identifier");
730 map
= isl_map_add_dims(map
, isl_dim_out
, 1);
733 tok
= isl_stream_next_token(s
);
734 if (tok
&& tok
->type
== '=') {
736 map
= read_var_def(s
, map
, isl_dim_out
, v
);
737 tok
= isl_stream_next_token(s
);
740 if (!tok
|| tok
->type
!= ',')
746 isl_stream_push_token(s
, tok
);
755 static int next_is_tuple(struct isl_stream
*s
)
757 struct isl_token
*tok
;
760 tok
= isl_stream_next_token(s
);
763 if (tok
->type
== '[') {
764 isl_stream_push_token(s
, tok
);
767 if (tok
->type
!= ISL_TOKEN_IDENT
&& !tok
->is_keyword
) {
768 isl_stream_push_token(s
, tok
);
772 is_tuple
= isl_stream_next_token_is(s
, '[');
774 isl_stream_push_token(s
, tok
);
779 /* Allocate an initial tuple with zero dimensions and an anonymous,
780 * unstructured space.
781 * A tuple is represented as an isl_multi_pw_aff.
782 * The range space is the space of the tuple.
783 * The domain space is an anonymous space
784 * with a dimension for each variable in the set of variables in "v".
785 * If a given dimension is not defined in terms of earlier dimensions in
786 * the input, then the corresponding isl_pw_aff is set equal to one time
787 * the variable corresponding to the dimension being defined.
789 static __isl_give isl_multi_pw_aff
*tuple_alloc(struct vars
*v
)
791 return isl_multi_pw_aff_alloc(isl_space_alloc(v
->ctx
, 0, v
->n
, 0));
794 /* Is "pa" an expression in term of earlier dimensions?
795 * The alternative is that the dimension is defined to be equal to itself,
796 * meaning that it has a universe domain and an expression that depends
797 * on itself. "i" is the position of the expression in a sequence
798 * of "n" expressions. The final dimensions of "pa" correspond to
799 * these "n" expressions.
801 static int pw_aff_is_expr(__isl_keep isl_pw_aff
*pa
, int i
, int n
)
809 if (!isl_set_plain_is_universe(pa
->p
[0].set
))
813 if (isl_int_is_zero(aff
->v
->el
[aff
->v
->size
- n
+ i
]))
818 /* Does the tuple contain any dimensions that are defined
819 * in terms of earlier dimensions?
821 static int tuple_has_expr(__isl_keep isl_multi_pw_aff
*tuple
)
829 n
= isl_multi_pw_aff_dim(tuple
, isl_dim_out
);
830 for (i
= 0; i
< n
; ++i
) {
831 pa
= isl_multi_pw_aff_get_pw_aff(tuple
, i
);
832 has_expr
= pw_aff_is_expr(pa
, i
, n
);
834 if (has_expr
< 0 || has_expr
)
841 /* Add a dimension to the given tuple.
842 * The dimension is initially undefined, so it is encoded
843 * as one times itself.
845 static __isl_give isl_multi_pw_aff
*tuple_add_dim(
846 __isl_take isl_multi_pw_aff
*tuple
, struct vars
*v
)
852 tuple
= isl_multi_pw_aff_add_dims(tuple
, isl_dim_in
, 1);
853 space
= isl_multi_pw_aff_get_domain_space(tuple
);
854 aff
= isl_aff_zero_on_domain(isl_local_space_from_space(space
));
855 aff
= isl_aff_add_coefficient_si(aff
, isl_dim_in
, v
->n
, 1);
856 pa
= isl_pw_aff_from_aff(aff
);
857 tuple
= isl_multi_pw_aff_flat_range_product(tuple
,
858 isl_multi_pw_aff_from_pw_aff(pa
));
863 /* Set the name of dimension "pos" in "tuple" to "name".
864 * During printing, we add primes if the same name appears more than once
865 * to distinguish the occurrences. Here, we remove those primes from "name"
866 * before setting the name of the dimension.
868 static __isl_give isl_multi_pw_aff
*tuple_set_dim_name(
869 __isl_take isl_multi_pw_aff
*tuple
, int pos
, char *name
)
876 prime
= strchr(name
, '\'');
879 tuple
= isl_multi_pw_aff_set_dim_name(tuple
, isl_dim_set
, pos
, name
);
886 /* Read an affine expression from "s" and replace the definition
887 * of dimension "pos" in "tuple" by this expression.
889 * accept_extended_affine requires a wrapped space as input.
890 * The domain space of "tuple", on the other hand is an anonymous space,
891 * so we have to adjust the space of the isl_pw_aff before adding it
894 static __isl_give isl_multi_pw_aff
*read_tuple_var_def(struct isl_stream
*s
,
895 __isl_take isl_multi_pw_aff
*tuple
, int pos
, struct vars
*v
)
900 space
= isl_space_wrap(isl_space_alloc(s
->ctx
, 0, v
->n
, 0));
901 def
= accept_extended_affine(s
, space
, v
);
902 space
= isl_space_set_alloc(s
->ctx
, 0, v
->n
);
903 def
= isl_pw_aff_reset_domain_space(def
, space
);
904 tuple
= isl_multi_pw_aff_set_pw_aff(tuple
, pos
, def
);
909 /* Read a list of variables and/or affine expressions and return the list
910 * as an isl_multi_pw_aff.
911 * The elements in the list are separated by either "," or "][".
913 static __isl_give isl_multi_pw_aff
*read_tuple_var_list(struct isl_stream
*s
,
917 struct isl_token
*tok
;
918 isl_multi_pw_aff
*res
;
920 res
= tuple_alloc(v
);
922 if (isl_stream_next_token_is(s
, ']'))
925 while ((tok
= next_token(s
)) != NULL
) {
928 res
= tuple_add_dim(res
, v
);
930 if (tok
->type
== ISL_TOKEN_IDENT
) {
932 int p
= vars_pos(v
, tok
->u
.s
, -1);
939 res
= tuple_set_dim_name(res
, i
, v
->v
->name
);
941 if (isl_stream_eat_if_available(s
, '='))
942 res
= read_tuple_var_def(s
, res
, i
, v
);
944 isl_stream_push_token(s
, tok
);
946 if (vars_add_anon(v
) < 0)
948 res
= read_tuple_var_def(s
, res
, i
, v
);
951 tok
= isl_stream_next_token(s
);
952 if (tok
&& tok
->type
== ']' &&
953 isl_stream_next_token_is(s
, '[')) {
955 tok
= isl_stream_next_token(s
);
956 } else if (!tok
|| tok
->type
!= ',')
963 isl_stream_push_token(s
, tok
);
968 return isl_multi_pw_aff_free(res
);
971 /* Read a tuple and represent it as an isl_multi_pw_aff. See tuple_alloc.
973 static __isl_give isl_multi_pw_aff
*read_tuple(struct isl_stream
*s
,
976 struct isl_token
*tok
;
978 isl_multi_pw_aff
*res
= NULL
;
980 tok
= isl_stream_next_token(s
);
983 if (tok
->type
== ISL_TOKEN_IDENT
|| tok
->is_keyword
) {
984 name
= strdup(tok
->u
.s
);
989 isl_stream_push_token(s
, tok
);
990 if (isl_stream_eat(s
, '['))
992 if (next_is_tuple(s
)) {
993 isl_multi_pw_aff
*out
;
995 res
= read_tuple(s
, v
);
996 if (isl_stream_eat(s
, ISL_TOKEN_TO
))
998 out
= read_tuple(s
, v
);
999 n
= isl_multi_pw_aff_dim(out
, isl_dim_out
);
1000 res
= isl_multi_pw_aff_add_dims(res
, isl_dim_in
, n
);
1001 res
= isl_multi_pw_aff_range_product(res
, out
);
1003 res
= read_tuple_var_list(s
, v
);
1004 if (isl_stream_eat(s
, ']'))
1008 res
= isl_multi_pw_aff_set_tuple_name(res
, isl_dim_out
, name
);
1015 return isl_multi_pw_aff_free(res
);
1018 /* Read a tuple from "s" and add it to "map".
1019 * The tuple is initially represented as an isl_multi_pw_aff.
1020 * We first create the appropriate space in "map" based on the range
1021 * space of this isl_multi_pw_aff. Then, we add equalities based
1022 * on the affine expressions. These live in an anonymous space,
1023 * however, so we first need to reset the space to that of "map".
1025 static __isl_give isl_map
*read_map_tuple(struct isl_stream
*s
,
1026 __isl_take isl_map
*map
, enum isl_dim_type type
, struct vars
*v
)
1029 isl_multi_pw_aff
*tuple
;
1030 isl_space
*space
= NULL
;
1032 tuple
= read_tuple(s
, v
);
1036 n
= isl_multi_pw_aff_dim(tuple
, isl_dim_out
);
1037 space
= isl_space_range(isl_multi_pw_aff_get_space(tuple
));
1039 if (type
== isl_dim_param
) {
1040 if (isl_space_has_tuple_name(space
, isl_dim_set
) ||
1041 isl_space_is_wrapping(space
)) {
1042 isl_die(s
->ctx
, isl_error_invalid
,
1043 "parameter tuples cannot be named or nested",
1046 map
= isl_map_add_dims(map
, type
, n
);
1047 for (i
= 0; i
< n
; ++i
) {
1049 if (!isl_space_has_dim_name(space
, isl_dim_set
, i
))
1050 isl_die(s
->ctx
, isl_error_invalid
,
1051 "parameters must be named",
1053 id
= isl_space_get_dim_id(space
, isl_dim_set
, i
);
1054 map
= isl_map_set_dim_id(map
, isl_dim_param
, i
, id
);
1056 } else if (type
== isl_dim_in
) {
1059 set
= isl_set_universe(isl_space_copy(space
));
1060 set
= isl_set_intersect_params(set
, isl_map_params(map
));
1061 map
= isl_map_from_domain(set
);
1065 set
= isl_set_universe(isl_space_copy(space
));
1066 map
= isl_map_from_domain_and_range(isl_map_domain(map
), set
);
1069 for (i
= 0; i
< n
; ++i
) {
1076 pa
= isl_multi_pw_aff_get_pw_aff(tuple
, i
);
1077 space
= isl_pw_aff_get_domain_space(pa
);
1078 aff
= isl_aff_zero_on_domain(isl_local_space_from_space(space
));
1079 aff
= isl_aff_add_coefficient_si(aff
,
1080 isl_dim_in
, v
->n
- n
+ i
, -1);
1081 pa
= isl_pw_aff_add(pa
, isl_pw_aff_from_aff(aff
));
1082 set
= isl_pw_aff_zero_set(pa
);
1083 map_i
= isl_map_from_range(set
);
1084 map_i
= isl_map_reset_space(map_i
, isl_map_get_space(map
));
1085 map
= isl_map_intersect(map
, map_i
);
1088 isl_space_free(space
);
1089 isl_multi_pw_aff_free(tuple
);
1092 isl_space_free(space
);
1093 isl_multi_pw_aff_free(tuple
);
1098 static __isl_give isl_set
*construct_constraints(
1099 __isl_take isl_set
*set
, int type
,
1100 __isl_keep isl_pw_aff_list
*left
, __isl_keep isl_pw_aff_list
*right
)
1104 if (type
== ISL_TOKEN_LE
)
1105 cond
= isl_pw_aff_list_le_set(isl_pw_aff_list_copy(left
),
1106 isl_pw_aff_list_copy(right
));
1107 else if (type
== ISL_TOKEN_GE
)
1108 cond
= isl_pw_aff_list_ge_set(isl_pw_aff_list_copy(left
),
1109 isl_pw_aff_list_copy(right
));
1110 else if (type
== ISL_TOKEN_LT
)
1111 cond
= isl_pw_aff_list_lt_set(isl_pw_aff_list_copy(left
),
1112 isl_pw_aff_list_copy(right
));
1113 else if (type
== ISL_TOKEN_GT
)
1114 cond
= isl_pw_aff_list_gt_set(isl_pw_aff_list_copy(left
),
1115 isl_pw_aff_list_copy(right
));
1116 else if (type
== ISL_TOKEN_NE
)
1117 cond
= isl_pw_aff_list_ne_set(isl_pw_aff_list_copy(left
),
1118 isl_pw_aff_list_copy(right
));
1120 cond
= isl_pw_aff_list_eq_set(isl_pw_aff_list_copy(left
),
1121 isl_pw_aff_list_copy(right
));
1123 return isl_set_intersect(set
, cond
);
1126 static __isl_give isl_map
*add_constraint(struct isl_stream
*s
,
1127 struct vars
*v
, __isl_take isl_map
*map
)
1129 struct isl_token
*tok
= NULL
;
1130 isl_pw_aff_list
*list1
= NULL
, *list2
= NULL
;
1133 set
= isl_map_wrap(map
);
1134 list1
= accept_affine_list(s
, isl_set_get_space(set
), v
);
1137 tok
= isl_stream_next_token(s
);
1138 if (!is_comparator(tok
)) {
1139 isl_stream_error(s
, tok
, "missing operator");
1141 isl_stream_push_token(s
, tok
);
1146 list2
= accept_affine_list(s
, isl_set_get_space(set
), v
);
1150 set
= construct_constraints(set
, tok
->type
, list1
, list2
);
1151 isl_token_free(tok
);
1152 isl_pw_aff_list_free(list1
);
1155 tok
= isl_stream_next_token(s
);
1156 if (!is_comparator(tok
)) {
1158 isl_stream_push_token(s
, tok
);
1162 isl_pw_aff_list_free(list1
);
1164 return isl_set_unwrap(set
);
1167 isl_token_free(tok
);
1168 isl_pw_aff_list_free(list1
);
1169 isl_pw_aff_list_free(list2
);
1174 static __isl_give isl_map
*read_exists(struct isl_stream
*s
,
1175 struct vars
*v
, __isl_take isl_map
*map
)
1178 int seen_paren
= isl_stream_eat_if_available(s
, '(');
1180 map
= isl_map_from_domain(isl_map_wrap(map
));
1181 map
= read_defined_var_list(s
, v
, map
);
1183 if (isl_stream_eat(s
, ':'))
1186 map
= read_disjuncts(s
, v
, map
);
1187 map
= isl_set_unwrap(isl_map_domain(map
));
1189 vars_drop(v
, v
->n
- n
);
1190 if (seen_paren
&& isl_stream_eat(s
, ')'))
1199 /* Parse an expression between parentheses and push the result
1200 * back on the stream.
1202 * The parsed expression may be either an affine expression
1203 * or a condition. The first type is pushed onto the stream
1204 * as an isl_pw_aff, while the second is pushed as an isl_map.
1206 * If the initial token indicates the start of a condition,
1207 * we parse it as such.
1208 * Otherwise, we first parse an affine expression and push
1209 * that onto the stream. If the affine expression covers the
1210 * entire expression between parentheses, we return.
1211 * Otherwise, we assume that the affine expression is the
1212 * start of a condition and continue parsing.
1214 static int resolve_paren_expr(struct isl_stream
*s
,
1215 struct vars
*v
, __isl_take isl_map
*map
)
1217 struct isl_token
*tok
, *tok2
;
1221 tok
= isl_stream_next_token(s
);
1222 if (!tok
|| tok
->type
!= '(')
1225 if (isl_stream_next_token_is(s
, '('))
1226 if (resolve_paren_expr(s
, v
, isl_map_copy(map
)))
1229 if (isl_stream_next_token_is(s
, ISL_TOKEN_EXISTS
) ||
1230 isl_stream_next_token_is(s
, ISL_TOKEN_NOT
) ||
1231 isl_stream_next_token_is(s
, ISL_TOKEN_TRUE
) ||
1232 isl_stream_next_token_is(s
, ISL_TOKEN_FALSE
) ||
1233 isl_stream_next_token_is(s
, ISL_TOKEN_MAP
)) {
1234 map
= read_disjuncts(s
, v
, map
);
1235 if (isl_stream_eat(s
, ')'))
1237 tok
->type
= ISL_TOKEN_MAP
;
1239 isl_stream_push_token(s
, tok
);
1243 tok2
= isl_stream_next_token(s
);
1248 isl_stream_push_token(s
, tok2
);
1250 pwaff
= accept_affine(s
, isl_space_wrap(isl_map_get_space(map
)), v
);
1254 tok2
= isl_token_new(s
->ctx
, line
, col
, 0);
1257 tok2
->type
= ISL_TOKEN_AFF
;
1258 tok2
->u
.pwaff
= pwaff
;
1260 if (isl_stream_eat_if_available(s
, ')')) {
1261 isl_stream_push_token(s
, tok2
);
1262 isl_token_free(tok
);
1267 isl_stream_push_token(s
, tok2
);
1269 map
= read_disjuncts(s
, v
, map
);
1270 if (isl_stream_eat(s
, ')'))
1273 tok
->type
= ISL_TOKEN_MAP
;
1275 isl_stream_push_token(s
, tok
);
1279 isl_pw_aff_free(pwaff
);
1281 isl_token_free(tok
);
1286 static __isl_give isl_map
*read_conjunct(struct isl_stream
*s
,
1287 struct vars
*v
, __isl_take isl_map
*map
)
1289 if (isl_stream_next_token_is(s
, '('))
1290 if (resolve_paren_expr(s
, v
, isl_map_copy(map
)))
1293 if (isl_stream_next_token_is(s
, ISL_TOKEN_MAP
)) {
1294 struct isl_token
*tok
;
1295 tok
= isl_stream_next_token(s
);
1299 map
= isl_map_copy(tok
->u
.map
);
1300 isl_token_free(tok
);
1304 if (isl_stream_eat_if_available(s
, ISL_TOKEN_EXISTS
))
1305 return read_exists(s
, v
, map
);
1307 if (isl_stream_eat_if_available(s
, ISL_TOKEN_TRUE
))
1310 if (isl_stream_eat_if_available(s
, ISL_TOKEN_FALSE
)) {
1311 isl_space
*dim
= isl_map_get_space(map
);
1313 return isl_map_empty(dim
);
1316 return add_constraint(s
, v
, map
);
1322 static __isl_give isl_map
*read_conjuncts(struct isl_stream
*s
,
1323 struct vars
*v
, __isl_take isl_map
*map
)
1328 negate
= isl_stream_eat_if_available(s
, ISL_TOKEN_NOT
);
1329 res
= read_conjunct(s
, v
, isl_map_copy(map
));
1331 res
= isl_map_subtract(isl_map_copy(map
), res
);
1333 while (isl_stream_eat_if_available(s
, ISL_TOKEN_AND
)) {
1336 negate
= isl_stream_eat_if_available(s
, ISL_TOKEN_NOT
);
1337 res_i
= read_conjunct(s
, v
, isl_map_copy(map
));
1339 res
= isl_map_subtract(res
, res_i
);
1341 res
= isl_map_intersect(res
, res_i
);
1348 static struct isl_map
*read_disjuncts(struct isl_stream
*s
,
1349 struct vars
*v
, __isl_take isl_map
*map
)
1353 if (isl_stream_next_token_is(s
, '}')) {
1354 isl_space
*dim
= isl_map_get_space(map
);
1356 return isl_map_universe(dim
);
1359 res
= read_conjuncts(s
, v
, isl_map_copy(map
));
1360 while (isl_stream_eat_if_available(s
, ISL_TOKEN_OR
)) {
1363 res_i
= read_conjuncts(s
, v
, isl_map_copy(map
));
1364 res
= isl_map_union(res
, res_i
);
1371 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map
*bmap
, int pos
)
1373 if (pos
< isl_basic_map_dim(bmap
, isl_dim_out
))
1374 return 1 + isl_basic_map_dim(bmap
, isl_dim_param
) +
1375 isl_basic_map_dim(bmap
, isl_dim_in
) + pos
;
1376 pos
-= isl_basic_map_dim(bmap
, isl_dim_out
);
1378 if (pos
< isl_basic_map_dim(bmap
, isl_dim_in
))
1379 return 1 + isl_basic_map_dim(bmap
, isl_dim_param
) + pos
;
1380 pos
-= isl_basic_map_dim(bmap
, isl_dim_in
);
1382 if (pos
< isl_basic_map_dim(bmap
, isl_dim_div
))
1383 return 1 + isl_basic_map_dim(bmap
, isl_dim_param
) +
1384 isl_basic_map_dim(bmap
, isl_dim_in
) +
1385 isl_basic_map_dim(bmap
, isl_dim_out
) + pos
;
1386 pos
-= isl_basic_map_dim(bmap
, isl_dim_div
);
1388 if (pos
< isl_basic_map_dim(bmap
, isl_dim_param
))
1394 static __isl_give isl_basic_map
*basic_map_read_polylib_constraint(
1395 struct isl_stream
*s
, __isl_take isl_basic_map
*bmap
)
1398 struct isl_token
*tok
;
1408 nparam
= isl_basic_map_dim(bmap
, isl_dim_param
);
1409 dim
= isl_basic_map_dim(bmap
, isl_dim_out
);
1411 tok
= isl_stream_next_token(s
);
1412 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1413 isl_stream_error(s
, tok
, "expecting coefficient");
1415 isl_stream_push_token(s
, tok
);
1418 if (!tok
->on_new_line
) {
1419 isl_stream_error(s
, tok
, "coefficient should appear on new line");
1420 isl_stream_push_token(s
, tok
);
1424 type
= isl_int_get_si(tok
->u
.v
);
1425 isl_token_free(tok
);
1427 isl_assert(s
->ctx
, type
== 0 || type
== 1, goto error
);
1429 k
= isl_basic_map_alloc_equality(bmap
);
1432 k
= isl_basic_map_alloc_inequality(bmap
);
1438 for (j
= 0; j
< 1 + isl_basic_map_total_dim(bmap
); ++j
) {
1440 tok
= isl_stream_next_token(s
);
1441 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1442 isl_stream_error(s
, tok
, "expecting coefficient");
1444 isl_stream_push_token(s
, tok
);
1447 if (tok
->on_new_line
) {
1448 isl_stream_error(s
, tok
,
1449 "coefficient should not appear on new line");
1450 isl_stream_push_token(s
, tok
);
1453 pos
= polylib_pos_to_isl_pos(bmap
, j
);
1454 isl_int_set(c
[pos
], tok
->u
.v
);
1455 isl_token_free(tok
);
1460 isl_basic_map_free(bmap
);
1464 static __isl_give isl_basic_map
*basic_map_read_polylib(struct isl_stream
*s
)
1467 struct isl_token
*tok
;
1468 struct isl_token
*tok2
;
1471 unsigned in
= 0, out
, local
= 0;
1472 struct isl_basic_map
*bmap
= NULL
;
1475 tok
= isl_stream_next_token(s
);
1477 isl_stream_error(s
, NULL
, "unexpected EOF");
1480 tok2
= isl_stream_next_token(s
);
1482 isl_token_free(tok
);
1483 isl_stream_error(s
, NULL
, "unexpected EOF");
1486 if (tok
->type
!= ISL_TOKEN_VALUE
|| tok2
->type
!= ISL_TOKEN_VALUE
) {
1487 isl_stream_push_token(s
, tok2
);
1488 isl_stream_push_token(s
, tok
);
1489 isl_stream_error(s
, NULL
,
1490 "expecting constraint matrix dimensions");
1493 n_row
= isl_int_get_si(tok
->u
.v
);
1494 n_col
= isl_int_get_si(tok2
->u
.v
);
1495 on_new_line
= tok2
->on_new_line
;
1496 isl_token_free(tok2
);
1497 isl_token_free(tok
);
1498 isl_assert(s
->ctx
, !on_new_line
, return NULL
);
1499 isl_assert(s
->ctx
, n_row
>= 0, return NULL
);
1500 isl_assert(s
->ctx
, n_col
>= 2 + nparam
, return NULL
);
1501 tok
= isl_stream_next_token_on_same_line(s
);
1503 if (tok
->type
!= ISL_TOKEN_VALUE
) {
1504 isl_stream_error(s
, tok
,
1505 "expecting number of output dimensions");
1506 isl_stream_push_token(s
, tok
);
1509 out
= isl_int_get_si(tok
->u
.v
);
1510 isl_token_free(tok
);
1512 tok
= isl_stream_next_token_on_same_line(s
);
1513 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1514 isl_stream_error(s
, tok
,
1515 "expecting number of input dimensions");
1517 isl_stream_push_token(s
, tok
);
1520 in
= isl_int_get_si(tok
->u
.v
);
1521 isl_token_free(tok
);
1523 tok
= isl_stream_next_token_on_same_line(s
);
1524 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1525 isl_stream_error(s
, tok
,
1526 "expecting number of existentials");
1528 isl_stream_push_token(s
, tok
);
1531 local
= isl_int_get_si(tok
->u
.v
);
1532 isl_token_free(tok
);
1534 tok
= isl_stream_next_token_on_same_line(s
);
1535 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1536 isl_stream_error(s
, tok
,
1537 "expecting number of parameters");
1539 isl_stream_push_token(s
, tok
);
1542 nparam
= isl_int_get_si(tok
->u
.v
);
1543 isl_token_free(tok
);
1544 if (n_col
!= 1 + out
+ in
+ local
+ nparam
+ 1) {
1545 isl_stream_error(s
, NULL
,
1546 "dimensions don't match");
1550 out
= n_col
- 2 - nparam
;
1551 bmap
= isl_basic_map_alloc(s
->ctx
, nparam
, in
, out
, local
, n_row
, n_row
);
1555 for (i
= 0; i
< local
; ++i
) {
1556 int k
= isl_basic_map_alloc_div(bmap
);
1559 isl_seq_clr(bmap
->div
[k
], 1 + 1 + nparam
+ in
+ out
+ local
);
1562 for (i
= 0; i
< n_row
; ++i
)
1563 bmap
= basic_map_read_polylib_constraint(s
, bmap
);
1565 tok
= isl_stream_next_token_on_same_line(s
);
1567 isl_stream_error(s
, tok
, "unexpected extra token on line");
1568 isl_stream_push_token(s
, tok
);
1572 bmap
= isl_basic_map_simplify(bmap
);
1573 bmap
= isl_basic_map_finalize(bmap
);
1576 isl_basic_map_free(bmap
);
1580 static struct isl_map
*map_read_polylib(struct isl_stream
*s
)
1582 struct isl_token
*tok
;
1583 struct isl_token
*tok2
;
1585 struct isl_map
*map
;
1587 tok
= isl_stream_next_token(s
);
1589 isl_stream_error(s
, NULL
, "unexpected EOF");
1592 tok2
= isl_stream_next_token_on_same_line(s
);
1593 if (tok2
&& tok2
->type
== ISL_TOKEN_VALUE
) {
1594 isl_stream_push_token(s
, tok2
);
1595 isl_stream_push_token(s
, tok
);
1596 return isl_map_from_basic_map(basic_map_read_polylib(s
));
1599 isl_stream_error(s
, tok2
, "unexpected token");
1600 isl_stream_push_token(s
, tok2
);
1601 isl_stream_push_token(s
, tok
);
1604 n
= isl_int_get_si(tok
->u
.v
);
1605 isl_token_free(tok
);
1607 isl_assert(s
->ctx
, n
>= 1, return NULL
);
1609 map
= isl_map_from_basic_map(basic_map_read_polylib(s
));
1611 for (i
= 1; map
&& i
< n
; ++i
)
1612 map
= isl_map_union(map
,
1613 isl_map_from_basic_map(basic_map_read_polylib(s
)));
1618 static int optional_power(struct isl_stream
*s
)
1621 struct isl_token
*tok
;
1623 tok
= isl_stream_next_token(s
);
1626 if (tok
->type
!= '^') {
1627 isl_stream_push_token(s
, tok
);
1630 isl_token_free(tok
);
1631 tok
= isl_stream_next_token(s
);
1632 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
1633 isl_stream_error(s
, tok
, "expecting exponent");
1635 isl_stream_push_token(s
, tok
);
1638 pow
= isl_int_get_si(tok
->u
.v
);
1639 isl_token_free(tok
);
1643 static __isl_give isl_pw_qpolynomial
*read_term(struct isl_stream
*s
,
1644 __isl_keep isl_map
*map
, struct vars
*v
);
1646 static __isl_give isl_pw_qpolynomial
*read_factor(struct isl_stream
*s
,
1647 __isl_keep isl_map
*map
, struct vars
*v
)
1649 isl_pw_qpolynomial
*pwqp
;
1650 struct isl_token
*tok
;
1652 tok
= next_token(s
);
1654 isl_stream_error(s
, NULL
, "unexpected EOF");
1657 if (tok
->type
== '(') {
1660 isl_token_free(tok
);
1661 pwqp
= read_term(s
, map
, v
);
1664 if (isl_stream_eat(s
, ')'))
1666 pow
= optional_power(s
);
1667 pwqp
= isl_pw_qpolynomial_pow(pwqp
, pow
);
1668 } else if (tok
->type
== ISL_TOKEN_VALUE
) {
1669 struct isl_token
*tok2
;
1670 tok2
= isl_stream_next_token(s
);
1671 isl_qpolynomial
*qp
;
1672 if (tok2
&& tok2
->type
== '/') {
1673 isl_token_free(tok2
);
1674 tok2
= next_token(s
);
1675 if (!tok2
|| tok2
->type
!= ISL_TOKEN_VALUE
) {
1676 isl_stream_error(s
, tok2
, "expected denominator");
1677 isl_token_free(tok
);
1678 isl_token_free(tok2
);
1681 qp
= isl_qpolynomial_rat_cst_on_domain(isl_map_get_space(map
),
1682 tok
->u
.v
, tok2
->u
.v
);
1683 isl_token_free(tok2
);
1685 isl_stream_push_token(s
, tok2
);
1686 qp
= isl_qpolynomial_cst_on_domain(isl_map_get_space(map
),
1689 isl_token_free(tok
);
1690 pwqp
= isl_pw_qpolynomial_from_qpolynomial(qp
);
1691 } else if (tok
->type
== ISL_TOKEN_INFTY
) {
1692 isl_qpolynomial
*qp
;
1693 isl_token_free(tok
);
1694 qp
= isl_qpolynomial_infty_on_domain(isl_map_get_space(map
));
1695 pwqp
= isl_pw_qpolynomial_from_qpolynomial(qp
);
1696 } else if (tok
->type
== ISL_TOKEN_NAN
) {
1697 isl_qpolynomial
*qp
;
1698 isl_token_free(tok
);
1699 qp
= isl_qpolynomial_nan_on_domain(isl_map_get_space(map
));
1700 pwqp
= isl_pw_qpolynomial_from_qpolynomial(qp
);
1701 } else if (tok
->type
== ISL_TOKEN_IDENT
) {
1703 int pos
= vars_pos(v
, tok
->u
.s
, -1);
1705 isl_qpolynomial
*qp
;
1707 isl_token_free(tok
);
1711 vars_drop(v
, v
->n
- n
);
1712 isl_stream_error(s
, tok
, "unknown identifier");
1713 isl_token_free(tok
);
1716 isl_token_free(tok
);
1717 pow
= optional_power(s
);
1718 qp
= isl_qpolynomial_var_pow_on_domain(isl_map_get_space(map
), pos
, pow
);
1719 pwqp
= isl_pw_qpolynomial_from_qpolynomial(qp
);
1720 } else if (tok
->type
== '[') {
1724 isl_stream_push_token(s
, tok
);
1725 pwaff
= accept_div(s
, isl_map_get_space(map
), v
);
1726 pow
= optional_power(s
);
1727 pwqp
= isl_pw_qpolynomial_from_pw_aff(pwaff
);
1728 pwqp
= isl_pw_qpolynomial_pow(pwqp
, pow
);
1729 } else if (tok
->type
== '-') {
1730 isl_token_free(tok
);
1731 pwqp
= read_factor(s
, map
, v
);
1732 pwqp
= isl_pw_qpolynomial_neg(pwqp
);
1734 isl_stream_error(s
, tok
, "unexpected isl_token");
1735 isl_stream_push_token(s
, tok
);
1739 if (isl_stream_eat_if_available(s
, '*') ||
1740 isl_stream_next_token_is(s
, ISL_TOKEN_IDENT
)) {
1741 isl_pw_qpolynomial
*pwqp2
;
1743 pwqp2
= read_factor(s
, map
, v
);
1744 pwqp
= isl_pw_qpolynomial_mul(pwqp
, pwqp2
);
1749 isl_pw_qpolynomial_free(pwqp
);
1753 static __isl_give isl_pw_qpolynomial
*read_term(struct isl_stream
*s
,
1754 __isl_keep isl_map
*map
, struct vars
*v
)
1756 struct isl_token
*tok
;
1757 isl_pw_qpolynomial
*pwqp
;
1759 pwqp
= read_factor(s
, map
, v
);
1762 tok
= next_token(s
);
1766 if (tok
->type
== '+') {
1767 isl_pw_qpolynomial
*pwqp2
;
1769 isl_token_free(tok
);
1770 pwqp2
= read_factor(s
, map
, v
);
1771 pwqp
= isl_pw_qpolynomial_add(pwqp
, pwqp2
);
1772 } else if (tok
->type
== '-') {
1773 isl_pw_qpolynomial
*pwqp2
;
1775 isl_token_free(tok
);
1776 pwqp2
= read_factor(s
, map
, v
);
1777 pwqp
= isl_pw_qpolynomial_sub(pwqp
, pwqp2
);
1778 } else if (tok
->type
== ISL_TOKEN_VALUE
&&
1779 isl_int_is_neg(tok
->u
.v
)) {
1780 isl_pw_qpolynomial
*pwqp2
;
1782 isl_stream_push_token(s
, tok
);
1783 pwqp2
= read_factor(s
, map
, v
);
1784 pwqp
= isl_pw_qpolynomial_add(pwqp
, pwqp2
);
1786 isl_stream_push_token(s
, tok
);
1794 static __isl_give isl_map
*read_optional_disjuncts(struct isl_stream
*s
,
1795 __isl_take isl_map
*map
, struct vars
*v
)
1797 struct isl_token
*tok
;
1799 tok
= isl_stream_next_token(s
);
1801 isl_stream_error(s
, NULL
, "unexpected EOF");
1804 if (tok
->type
== ':' ||
1805 (tok
->type
== ISL_TOKEN_OR
&& !strcmp(tok
->u
.s
, "|"))) {
1806 isl_token_free(tok
);
1807 map
= read_disjuncts(s
, v
, map
);
1809 isl_stream_push_token(s
, tok
);
1817 static struct isl_obj
obj_read_poly(struct isl_stream
*s
,
1818 __isl_take isl_map
*map
, struct vars
*v
, int n
)
1820 struct isl_obj obj
= { isl_obj_pw_qpolynomial
, NULL
};
1821 isl_pw_qpolynomial
*pwqp
;
1822 struct isl_set
*set
;
1824 pwqp
= read_term(s
, map
, v
);
1825 map
= read_optional_disjuncts(s
, map
, v
);
1826 set
= isl_map_range(map
);
1828 pwqp
= isl_pw_qpolynomial_intersect_domain(pwqp
, set
);
1830 vars_drop(v
, v
->n
- n
);
1836 static struct isl_obj
obj_read_poly_or_fold(struct isl_stream
*s
,
1837 __isl_take isl_set
*set
, struct vars
*v
, int n
)
1839 struct isl_obj obj
= { isl_obj_pw_qpolynomial_fold
, NULL
};
1840 isl_pw_qpolynomial
*pwqp
;
1841 isl_pw_qpolynomial_fold
*pwf
= NULL
;
1843 if (!isl_stream_eat_if_available(s
, ISL_TOKEN_MAX
))
1844 return obj_read_poly(s
, set
, v
, n
);
1846 if (isl_stream_eat(s
, '('))
1849 pwqp
= read_term(s
, set
, v
);
1850 pwf
= isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max
, pwqp
);
1852 while (isl_stream_eat_if_available(s
, ',')) {
1853 isl_pw_qpolynomial_fold
*pwf_i
;
1854 pwqp
= read_term(s
, set
, v
);
1855 pwf_i
= isl_pw_qpolynomial_fold_from_pw_qpolynomial(isl_fold_max
,
1857 pwf
= isl_pw_qpolynomial_fold_fold(pwf
, pwf_i
);
1860 if (isl_stream_eat(s
, ')'))
1863 set
= read_optional_disjuncts(s
, set
, v
);
1864 pwf
= isl_pw_qpolynomial_fold_intersect_domain(pwf
, set
);
1866 vars_drop(v
, v
->n
- n
);
1872 isl_pw_qpolynomial_fold_free(pwf
);
1873 obj
.type
= isl_obj_none
;
1877 static int is_rational(struct isl_stream
*s
)
1879 struct isl_token
*tok
;
1881 tok
= isl_stream_next_token(s
);
1884 if (tok
->type
== ISL_TOKEN_RAT
&& isl_stream_next_token_is(s
, ':')) {
1885 isl_token_free(tok
);
1886 isl_stream_eat(s
, ':');
1890 isl_stream_push_token(s
, tok
);
1895 static struct isl_obj
obj_read_body(struct isl_stream
*s
,
1896 __isl_take isl_map
*map
, struct vars
*v
)
1898 struct isl_token
*tok
;
1899 struct isl_obj obj
= { isl_obj_set
, NULL
};
1903 map
= isl_map_set_rational(map
);
1905 if (isl_stream_next_token_is(s
, ':')) {
1906 obj
.type
= isl_obj_set
;
1907 obj
.v
= read_optional_disjuncts(s
, map
, v
);
1911 if (!next_is_tuple(s
))
1912 return obj_read_poly_or_fold(s
, map
, v
, n
);
1914 map
= read_map_tuple(s
, map
, isl_dim_in
, v
);
1917 tok
= isl_stream_next_token(s
);
1920 if (tok
->type
== ISL_TOKEN_TO
) {
1921 obj
.type
= isl_obj_map
;
1922 isl_token_free(tok
);
1923 if (!next_is_tuple(s
)) {
1924 isl_set
*set
= isl_map_domain(map
);
1925 return obj_read_poly_or_fold(s
, set
, v
, n
);
1927 map
= read_map_tuple(s
, map
, isl_dim_out
, v
);
1931 map
= isl_map_domain(map
);
1932 isl_stream_push_token(s
, tok
);
1935 map
= read_optional_disjuncts(s
, map
, v
);
1937 vars_drop(v
, v
->n
- n
);
1943 obj
.type
= isl_obj_none
;
1947 static struct isl_obj
to_union(isl_ctx
*ctx
, struct isl_obj obj
)
1949 if (obj
.type
== isl_obj_map
) {
1950 obj
.v
= isl_union_map_from_map(obj
.v
);
1951 obj
.type
= isl_obj_union_map
;
1952 } else if (obj
.type
== isl_obj_set
) {
1953 obj
.v
= isl_union_set_from_set(obj
.v
);
1954 obj
.type
= isl_obj_union_set
;
1955 } else if (obj
.type
== isl_obj_pw_qpolynomial
) {
1956 obj
.v
= isl_union_pw_qpolynomial_from_pw_qpolynomial(obj
.v
);
1957 obj
.type
= isl_obj_union_pw_qpolynomial
;
1958 } else if (obj
.type
== isl_obj_pw_qpolynomial_fold
) {
1959 obj
.v
= isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj
.v
);
1960 obj
.type
= isl_obj_union_pw_qpolynomial_fold
;
1962 isl_assert(ctx
, 0, goto error
);
1965 obj
.type
->free(obj
.v
);
1966 obj
.type
= isl_obj_none
;
1970 static struct isl_obj
obj_add(struct isl_ctx
*ctx
,
1971 struct isl_obj obj1
, struct isl_obj obj2
)
1973 if (obj1
.type
== isl_obj_set
&& obj2
.type
== isl_obj_union_set
)
1974 obj1
= to_union(ctx
, obj1
);
1975 if (obj1
.type
== isl_obj_union_set
&& obj2
.type
== isl_obj_set
)
1976 obj2
= to_union(ctx
, obj2
);
1977 if (obj1
.type
== isl_obj_map
&& obj2
.type
== isl_obj_union_map
)
1978 obj1
= to_union(ctx
, obj1
);
1979 if (obj1
.type
== isl_obj_union_map
&& obj2
.type
== isl_obj_map
)
1980 obj2
= to_union(ctx
, obj2
);
1981 if (obj1
.type
== isl_obj_pw_qpolynomial
&&
1982 obj2
.type
== isl_obj_union_pw_qpolynomial
)
1983 obj1
= to_union(ctx
, obj1
);
1984 if (obj1
.type
== isl_obj_union_pw_qpolynomial
&&
1985 obj2
.type
== isl_obj_pw_qpolynomial
)
1986 obj2
= to_union(ctx
, obj2
);
1987 if (obj1
.type
== isl_obj_pw_qpolynomial_fold
&&
1988 obj2
.type
== isl_obj_union_pw_qpolynomial_fold
)
1989 obj1
= to_union(ctx
, obj1
);
1990 if (obj1
.type
== isl_obj_union_pw_qpolynomial_fold
&&
1991 obj2
.type
== isl_obj_pw_qpolynomial_fold
)
1992 obj2
= to_union(ctx
, obj2
);
1993 isl_assert(ctx
, obj1
.type
== obj2
.type
, goto error
);
1994 if (obj1
.type
== isl_obj_map
&& !isl_map_has_equal_space(obj1
.v
, obj2
.v
)) {
1995 obj1
= to_union(ctx
, obj1
);
1996 obj2
= to_union(ctx
, obj2
);
1998 if (obj1
.type
== isl_obj_set
&& !isl_set_has_equal_space(obj1
.v
, obj2
.v
)) {
1999 obj1
= to_union(ctx
, obj1
);
2000 obj2
= to_union(ctx
, obj2
);
2002 if (obj1
.type
== isl_obj_pw_qpolynomial
&&
2003 !isl_pw_qpolynomial_has_equal_space(obj1
.v
, obj2
.v
)) {
2004 obj1
= to_union(ctx
, obj1
);
2005 obj2
= to_union(ctx
, obj2
);
2007 if (obj1
.type
== isl_obj_pw_qpolynomial_fold
&&
2008 !isl_pw_qpolynomial_fold_has_equal_space(obj1
.v
, obj2
.v
)) {
2009 obj1
= to_union(ctx
, obj1
);
2010 obj2
= to_union(ctx
, obj2
);
2012 obj1
.v
= obj1
.type
->add(obj1
.v
, obj2
.v
);
2015 obj1
.type
->free(obj1
.v
);
2016 obj2
.type
->free(obj2
.v
);
2017 obj1
.type
= isl_obj_none
;
2022 static struct isl_obj
obj_read(struct isl_stream
*s
)
2024 isl_map
*map
= NULL
;
2025 struct isl_token
*tok
;
2026 struct vars
*v
= NULL
;
2027 struct isl_obj obj
= { isl_obj_set
, NULL
};
2029 tok
= next_token(s
);
2031 isl_stream_error(s
, NULL
, "unexpected EOF");
2034 if (tok
->type
== ISL_TOKEN_VALUE
) {
2035 struct isl_token
*tok2
;
2036 struct isl_map
*map
;
2038 tok2
= isl_stream_next_token(s
);
2039 if (!tok2
|| tok2
->type
!= ISL_TOKEN_VALUE
||
2040 isl_int_is_neg(tok2
->u
.v
)) {
2042 isl_stream_push_token(s
, tok2
);
2043 obj
.type
= isl_obj_int
;
2044 obj
.v
= isl_int_obj_alloc(s
->ctx
, tok
->u
.v
);
2045 isl_token_free(tok
);
2048 isl_stream_push_token(s
, tok2
);
2049 isl_stream_push_token(s
, tok
);
2050 map
= map_read_polylib(s
);
2053 if (isl_map_may_be_set(map
))
2054 obj
.v
= isl_map_range(map
);
2056 obj
.type
= isl_obj_map
;
2061 v
= vars_new(s
->ctx
);
2063 isl_stream_push_token(s
, tok
);
2066 map
= isl_map_universe(isl_space_params_alloc(s
->ctx
, 0));
2067 if (tok
->type
== '[') {
2068 isl_stream_push_token(s
, tok
);
2069 map
= read_map_tuple(s
, map
, isl_dim_param
, v
);
2072 tok
= isl_stream_next_token(s
);
2073 if (!tok
|| tok
->type
!= ISL_TOKEN_TO
) {
2074 isl_stream_error(s
, tok
, "expecting '->'");
2076 isl_stream_push_token(s
, tok
);
2079 isl_token_free(tok
);
2080 tok
= isl_stream_next_token(s
);
2082 if (!tok
|| tok
->type
!= '{') {
2083 isl_stream_error(s
, tok
, "expecting '{'");
2085 isl_stream_push_token(s
, tok
);
2088 isl_token_free(tok
);
2090 tok
= isl_stream_next_token(s
);
2093 else if (tok
->type
== ISL_TOKEN_IDENT
&& !strcmp(tok
->u
.s
, "Sym")) {
2094 isl_token_free(tok
);
2095 if (isl_stream_eat(s
, '='))
2097 map
= read_map_tuple(s
, map
, isl_dim_param
, v
);
2100 } else if (tok
->type
== '}') {
2101 obj
.type
= isl_obj_union_set
;
2102 obj
.v
= isl_union_set_empty(isl_map_get_space(map
));
2103 isl_token_free(tok
);
2106 isl_stream_push_token(s
, tok
);
2111 o
= obj_read_body(s
, isl_map_copy(map
), v
);
2112 if (o
.type
== isl_obj_none
|| !o
.v
)
2117 obj
= obj_add(s
->ctx
, obj
, o
);
2118 if (obj
.type
== isl_obj_none
|| !obj
.v
)
2121 tok
= isl_stream_next_token(s
);
2122 if (!tok
|| tok
->type
!= ';')
2124 isl_token_free(tok
);
2125 if (isl_stream_next_token_is(s
, '}')) {
2126 tok
= isl_stream_next_token(s
);
2131 if (tok
&& tok
->type
== '}') {
2132 isl_token_free(tok
);
2134 isl_stream_error(s
, tok
, "unexpected isl_token");
2136 isl_token_free(tok
);
2146 obj
.type
->free(obj
.v
);
2153 struct isl_obj
isl_stream_read_obj(struct isl_stream
*s
)
2158 __isl_give isl_map
*isl_stream_read_map(struct isl_stream
*s
)
2164 isl_assert(s
->ctx
, obj
.type
== isl_obj_map
||
2165 obj
.type
== isl_obj_set
, goto error
);
2167 if (obj
.type
== isl_obj_set
)
2168 obj
.v
= isl_map_from_range(obj
.v
);
2172 obj
.type
->free(obj
.v
);
2176 __isl_give isl_set
*isl_stream_read_set(struct isl_stream
*s
)
2182 if (obj
.type
== isl_obj_map
&& isl_map_may_be_set(obj
.v
)) {
2183 obj
.v
= isl_map_range(obj
.v
);
2184 obj
.type
= isl_obj_set
;
2186 isl_assert(s
->ctx
, obj
.type
== isl_obj_set
, goto error
);
2191 obj
.type
->free(obj
.v
);
2195 __isl_give isl_union_map
*isl_stream_read_union_map(struct isl_stream
*s
)
2200 if (obj
.type
== isl_obj_map
) {
2201 obj
.type
= isl_obj_union_map
;
2202 obj
.v
= isl_union_map_from_map(obj
.v
);
2204 if (obj
.type
== isl_obj_set
) {
2205 obj
.type
= isl_obj_union_set
;
2206 obj
.v
= isl_union_set_from_set(obj
.v
);
2208 if (obj
.v
&& obj
.type
== isl_obj_union_set
&&
2209 isl_union_set_is_empty(obj
.v
))
2210 obj
.type
= isl_obj_union_map
;
2211 if (obj
.v
&& obj
.type
!= isl_obj_union_map
)
2212 isl_die(s
->ctx
, isl_error_invalid
, "invalid input", goto error
);
2216 obj
.type
->free(obj
.v
);
2220 __isl_give isl_union_set
*isl_stream_read_union_set(struct isl_stream
*s
)
2225 if (obj
.type
== isl_obj_set
) {
2226 obj
.type
= isl_obj_union_set
;
2227 obj
.v
= isl_union_set_from_set(obj
.v
);
2230 isl_assert(s
->ctx
, obj
.type
== isl_obj_union_set
, goto error
);
2234 obj
.type
->free(obj
.v
);
2238 static __isl_give isl_basic_map
*basic_map_read(struct isl_stream
*s
)
2241 struct isl_map
*map
;
2242 struct isl_basic_map
*bmap
;
2249 isl_assert(map
->ctx
, map
->n
<= 1, goto error
);
2252 bmap
= isl_basic_map_empty_like_map(map
);
2254 bmap
= isl_basic_map_copy(map
->p
[0]);
2264 static __isl_give isl_basic_set
*basic_set_read(struct isl_stream
*s
)
2266 isl_basic_map
*bmap
;
2267 bmap
= basic_map_read(s
);
2270 if (!isl_basic_map_may_be_set(bmap
))
2271 isl_die(s
->ctx
, isl_error_invalid
,
2272 "input is not a set", goto error
);
2273 return isl_basic_map_range(bmap
);
2275 isl_basic_map_free(bmap
);
2279 __isl_give isl_basic_map
*isl_basic_map_read_from_file(isl_ctx
*ctx
,
2282 struct isl_basic_map
*bmap
;
2283 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2286 bmap
= basic_map_read(s
);
2291 __isl_give isl_basic_set
*isl_basic_set_read_from_file(isl_ctx
*ctx
,
2294 isl_basic_set
*bset
;
2295 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2298 bset
= basic_set_read(s
);
2303 struct isl_basic_map
*isl_basic_map_read_from_str(struct isl_ctx
*ctx
,
2306 struct isl_basic_map
*bmap
;
2307 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2310 bmap
= basic_map_read(s
);
2315 struct isl_basic_set
*isl_basic_set_read_from_str(struct isl_ctx
*ctx
,
2318 isl_basic_set
*bset
;
2319 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2322 bset
= basic_set_read(s
);
2327 __isl_give isl_map
*isl_map_read_from_file(struct isl_ctx
*ctx
,
2330 struct isl_map
*map
;
2331 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2334 map
= isl_stream_read_map(s
);
2339 __isl_give isl_map
*isl_map_read_from_str(struct isl_ctx
*ctx
,
2342 struct isl_map
*map
;
2343 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2346 map
= isl_stream_read_map(s
);
2351 __isl_give isl_set
*isl_set_read_from_file(struct isl_ctx
*ctx
,
2355 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2358 set
= isl_stream_read_set(s
);
2363 struct isl_set
*isl_set_read_from_str(struct isl_ctx
*ctx
,
2367 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2370 set
= isl_stream_read_set(s
);
2375 __isl_give isl_union_map
*isl_union_map_read_from_file(isl_ctx
*ctx
,
2378 isl_union_map
*umap
;
2379 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2382 umap
= isl_stream_read_union_map(s
);
2387 __isl_give isl_union_map
*isl_union_map_read_from_str(struct isl_ctx
*ctx
,
2390 isl_union_map
*umap
;
2391 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2394 umap
= isl_stream_read_union_map(s
);
2399 __isl_give isl_union_set
*isl_union_set_read_from_file(isl_ctx
*ctx
,
2402 isl_union_set
*uset
;
2403 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2406 uset
= isl_stream_read_union_set(s
);
2411 __isl_give isl_union_set
*isl_union_set_read_from_str(struct isl_ctx
*ctx
,
2414 isl_union_set
*uset
;
2415 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2418 uset
= isl_stream_read_union_set(s
);
2423 static __isl_give isl_vec
*isl_vec_read_polylib(struct isl_stream
*s
)
2425 struct isl_vec
*vec
= NULL
;
2426 struct isl_token
*tok
;
2430 tok
= isl_stream_next_token(s
);
2431 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
2432 isl_stream_error(s
, tok
, "expecting vector length");
2436 size
= isl_int_get_si(tok
->u
.v
);
2437 isl_token_free(tok
);
2439 vec
= isl_vec_alloc(s
->ctx
, size
);
2441 for (j
= 0; j
< size
; ++j
) {
2442 tok
= isl_stream_next_token(s
);
2443 if (!tok
|| tok
->type
!= ISL_TOKEN_VALUE
) {
2444 isl_stream_error(s
, tok
, "expecting constant value");
2447 isl_int_set(vec
->el
[j
], tok
->u
.v
);
2448 isl_token_free(tok
);
2453 isl_token_free(tok
);
2458 static __isl_give isl_vec
*vec_read(struct isl_stream
*s
)
2460 return isl_vec_read_polylib(s
);
2463 __isl_give isl_vec
*isl_vec_read_from_file(isl_ctx
*ctx
, FILE *input
)
2466 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2474 __isl_give isl_pw_qpolynomial
*isl_stream_read_pw_qpolynomial(
2475 struct isl_stream
*s
)
2481 isl_assert(s
->ctx
, obj
.type
== isl_obj_pw_qpolynomial
,
2486 obj
.type
->free(obj
.v
);
2490 __isl_give isl_pw_qpolynomial
*isl_pw_qpolynomial_read_from_str(isl_ctx
*ctx
,
2493 isl_pw_qpolynomial
*pwqp
;
2494 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2497 pwqp
= isl_stream_read_pw_qpolynomial(s
);
2502 __isl_give isl_pw_qpolynomial
*isl_pw_qpolynomial_read_from_file(isl_ctx
*ctx
,
2505 isl_pw_qpolynomial
*pwqp
;
2506 struct isl_stream
*s
= isl_stream_new_file(ctx
, input
);
2509 pwqp
= isl_stream_read_pw_qpolynomial(s
);
2514 /* Is the next token an identifer not in "v"?
2516 static int next_is_fresh_ident(struct isl_stream
*s
, struct vars
*v
)
2520 struct isl_token
*tok
;
2522 tok
= isl_stream_next_token(s
);
2525 fresh
= tok
->type
== ISL_TOKEN_IDENT
&& vars_pos(v
, tok
->u
.s
, -1) >= n
;
2526 isl_stream_push_token(s
, tok
);
2528 vars_drop(v
, v
->n
- n
);
2533 /* First read the domain of the affine expression, which may be
2534 * a parameter space or a set.
2535 * The tricky part is that we don't know if the domain is a set or not,
2536 * so when we are trying to read the domain, we may actually be reading
2537 * the affine expression itself (defined on a parameter domains)
2538 * If the tuple we are reading is named, we assume it's the domain.
2539 * Also, if inside the tuple, the first thing we find is a nested tuple
2540 * or a new identifier, we again assume it's the domain.
2541 * Otherwise, we assume we are reading an affine expression.
2543 static __isl_give isl_set
*read_aff_domain(struct isl_stream
*s
,
2544 __isl_take isl_set
*dom
, struct vars
*v
)
2546 struct isl_token
*tok
;
2548 tok
= isl_stream_next_token(s
);
2549 if (tok
&& (tok
->type
== ISL_TOKEN_IDENT
|| tok
->is_keyword
)) {
2550 isl_stream_push_token(s
, tok
);
2551 return read_map_tuple(s
, dom
, isl_dim_set
, v
);
2553 if (!tok
|| tok
->type
!= '[') {
2554 isl_stream_error(s
, tok
, "expecting '['");
2557 if (next_is_tuple(s
) || next_is_fresh_ident(s
, v
)) {
2558 isl_stream_push_token(s
, tok
);
2559 dom
= read_map_tuple(s
, dom
, isl_dim_set
, v
);
2561 isl_stream_push_token(s
, tok
);
2566 isl_stream_push_token(s
, tok
);
2572 /* Read an affine expression from "s".
2574 __isl_give isl_aff
*isl_stream_read_aff(struct isl_stream
*s
)
2579 ma
= isl_stream_read_multi_aff(s
);
2582 if (isl_multi_aff_dim(ma
, isl_dim_out
) != 1)
2583 isl_die(s
->ctx
, isl_error_invalid
,
2584 "expecting single affine expression",
2587 aff
= isl_multi_aff_get_aff(ma
, 0);
2588 isl_multi_aff_free(ma
);
2591 isl_multi_aff_free(ma
);
2595 /* Read a piecewise affine expression from "s" with domain (space) "dom".
2597 static __isl_give isl_pw_aff
*read_pw_aff_with_dom(struct isl_stream
*s
,
2598 __isl_take isl_set
*dom
, struct vars
*v
)
2600 isl_pw_aff
*pwaff
= NULL
;
2602 if (!isl_set_is_params(dom
) && isl_stream_eat(s
, ISL_TOKEN_TO
))
2605 if (isl_stream_eat(s
, '['))
2608 pwaff
= accept_affine(s
, isl_set_get_space(dom
), v
);
2610 if (isl_stream_eat(s
, ']'))
2613 dom
= read_optional_disjuncts(s
, dom
, v
);
2614 pwaff
= isl_pw_aff_intersect_domain(pwaff
, dom
);
2619 isl_pw_aff_free(pwaff
);
2623 __isl_give isl_pw_aff
*isl_stream_read_pw_aff(struct isl_stream
*s
)
2626 isl_set
*dom
= NULL
;
2628 isl_pw_aff
*pa
= NULL
;
2631 v
= vars_new(s
->ctx
);
2635 dom
= isl_set_universe(isl_space_params_alloc(s
->ctx
, 0));
2636 if (next_is_tuple(s
)) {
2637 dom
= read_map_tuple(s
, dom
, isl_dim_param
, v
);
2638 if (isl_stream_eat(s
, ISL_TOKEN_TO
))
2641 if (isl_stream_eat(s
, '{'))
2645 aff_dom
= read_aff_domain(s
, isl_set_copy(dom
), v
);
2646 pa
= read_pw_aff_with_dom(s
, aff_dom
, v
);
2647 vars_drop(v
, v
->n
- n
);
2649 while (isl_stream_eat_if_available(s
, ';')) {
2653 aff_dom
= read_aff_domain(s
, isl_set_copy(dom
), v
);
2654 pa_i
= read_pw_aff_with_dom(s
, aff_dom
, v
);
2655 vars_drop(v
, v
->n
- n
);
2657 pa
= isl_pw_aff_union_add(pa
, pa_i
);
2660 if (isl_stream_eat(s
, '}'))
2669 isl_pw_aff_free(pa
);
2673 __isl_give isl_aff
*isl_aff_read_from_str(isl_ctx
*ctx
, const char *str
)
2676 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2679 aff
= isl_stream_read_aff(s
);
2684 __isl_give isl_pw_aff
*isl_pw_aff_read_from_str(isl_ctx
*ctx
, const char *str
)
2687 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2690 pa
= isl_stream_read_pw_aff(s
);
2695 /* Read an isl_pw_multi_aff from "s".
2696 * We currently read a generic object and if it turns out to be a set or
2697 * a map, we convert that to an isl_pw_multi_aff.
2698 * It would be more efficient if we were to construct the isl_pw_multi_aff
2701 __isl_give isl_pw_multi_aff
*isl_stream_read_pw_multi_aff(struct isl_stream
*s
)
2709 if (obj
.type
== isl_obj_map
)
2710 return isl_pw_multi_aff_from_map(obj
.v
);
2711 if (obj
.type
== isl_obj_set
)
2712 return isl_pw_multi_aff_from_set(obj
.v
);
2714 obj
.type
->free(obj
.v
);
2715 isl_die(s
->ctx
, isl_error_invalid
, "unexpected object type",
2719 __isl_give isl_pw_multi_aff
*isl_pw_multi_aff_read_from_str(isl_ctx
*ctx
,
2722 isl_pw_multi_aff
*pma
;
2723 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2726 pma
= isl_stream_read_pw_multi_aff(s
);
2731 /* Assuming "pa" represents a single affine expression defined on a universe
2732 * domain, extract this affine expression.
2734 static __isl_give isl_aff
*aff_from_pw_aff(__isl_take isl_pw_aff
*pa
)
2741 isl_die(isl_pw_aff_get_ctx(pa
), isl_error_invalid
,
2742 "expecting single affine expression",
2744 if (!isl_set_plain_is_universe(pa
->p
[0].set
))
2745 isl_die(isl_pw_aff_get_ctx(pa
), isl_error_invalid
,
2746 "expecting universe domain",
2749 aff
= isl_aff_copy(pa
->p
[0].aff
);
2750 isl_pw_aff_free(pa
);
2753 isl_pw_aff_free(pa
);
2757 /* Read a multi-affine expression from "s".
2758 * If the multi-affine expression has a domain, then then tuple
2759 * representing this domain cannot involve any affine expressions.
2760 * The tuple representing the actual expressions needs to consist
2761 * of only affine expressions. Moreover, these expressions can
2762 * only depend on parameters and input dimensions and not on other
2763 * output dimensions.
2765 __isl_give isl_multi_aff
*isl_stream_read_multi_aff(struct isl_stream
*s
)
2768 isl_set
*dom
= NULL
;
2769 isl_multi_pw_aff
*tuple
= NULL
;
2771 isl_space
*space
, *dom_space
;
2772 isl_multi_aff
*ma
= NULL
;
2774 v
= vars_new(s
->ctx
);
2778 dom
= isl_set_universe(isl_space_params_alloc(s
->ctx
, 0));
2779 if (next_is_tuple(s
)) {
2780 dom
= read_map_tuple(s
, dom
, isl_dim_param
, v
);
2781 if (isl_stream_eat(s
, ISL_TOKEN_TO
))
2784 if (!isl_set_plain_is_universe(dom
))
2785 isl_die(s
->ctx
, isl_error_invalid
,
2786 "expecting universe parameter domain", goto error
);
2787 if (isl_stream_eat(s
, '{'))
2790 tuple
= read_tuple(s
, v
);
2793 if (isl_stream_eat_if_available(s
, ISL_TOKEN_TO
)) {
2798 has_expr
= tuple_has_expr(tuple
);
2802 isl_die(s
->ctx
, isl_error_invalid
,
2803 "expecting universe domain", goto error
);
2804 space
= isl_space_range(isl_multi_pw_aff_get_space(tuple
));
2805 set
= isl_set_universe(space
);
2806 dom
= isl_set_intersect_params(set
, dom
);
2807 isl_multi_pw_aff_free(tuple
);
2808 tuple
= read_tuple(s
, v
);
2813 if (isl_stream_eat(s
, '}'))
2816 n
= isl_multi_pw_aff_dim(tuple
, isl_dim_out
);
2817 dim
= isl_set_dim(dom
, isl_dim_all
);
2818 dom_space
= isl_set_get_space(dom
);
2819 space
= isl_space_range(isl_multi_pw_aff_get_space(tuple
));
2820 space
= isl_space_align_params(space
, isl_space_copy(dom_space
));
2821 if (!isl_space_is_params(dom_space
))
2822 space
= isl_space_map_from_domain_and_range(
2823 isl_space_copy(dom_space
), space
);
2824 isl_space_free(dom_space
);
2825 ma
= isl_multi_aff_alloc(space
);
2827 for (i
= 0; i
< n
; ++i
) {
2830 pa
= isl_multi_pw_aff_get_pw_aff(tuple
, i
);
2831 aff
= aff_from_pw_aff(pa
);
2834 if (isl_aff_involves_dims(aff
, isl_dim_in
, dim
, i
+ 1)) {
2836 isl_die(s
->ctx
, isl_error_invalid
,
2837 "not an affine expression", goto error
);
2839 aff
= isl_aff_drop_dims(aff
, isl_dim_in
, dim
, n
);
2840 space
= isl_multi_aff_get_domain_space(ma
);
2841 aff
= isl_aff_reset_domain_space(aff
, space
);
2842 ma
= isl_multi_aff_set_aff(ma
, i
, aff
);
2845 isl_multi_pw_aff_free(tuple
);
2850 isl_multi_pw_aff_free(tuple
);
2853 isl_multi_aff_free(ma
);
2857 __isl_give isl_multi_aff
*isl_multi_aff_read_from_str(isl_ctx
*ctx
,
2860 isl_multi_aff
*maff
;
2861 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2864 maff
= isl_stream_read_multi_aff(s
);
2869 __isl_give isl_union_pw_qpolynomial
*isl_stream_read_union_pw_qpolynomial(
2870 struct isl_stream
*s
)
2875 if (obj
.type
== isl_obj_pw_qpolynomial
) {
2876 obj
.type
= isl_obj_union_pw_qpolynomial
;
2877 obj
.v
= isl_union_pw_qpolynomial_from_pw_qpolynomial(obj
.v
);
2880 isl_assert(s
->ctx
, obj
.type
== isl_obj_union_pw_qpolynomial
,
2885 obj
.type
->free(obj
.v
);
2889 __isl_give isl_union_pw_qpolynomial
*isl_union_pw_qpolynomial_read_from_str(
2890 isl_ctx
*ctx
, const char *str
)
2892 isl_union_pw_qpolynomial
*upwqp
;
2893 struct isl_stream
*s
= isl_stream_new_str(ctx
, str
);
2896 upwqp
= isl_stream_read_union_pw_qpolynomial(s
);