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
17 #include <isl_ctx_private.h>
18 #include <isl_map_private.h>
22 #include <isl/stream.h>
24 #include "isl_polynomial_private.h"
25 #include <isl/union_map.h>
26 #include <isl_mat_private.h>
32 /* non-zero if variable represents a min (-1) or a max (1) */
35 struct variable *next;
44 static struct vars *vars_new(struct isl_ctx *ctx)
47 v = isl_alloc_type(ctx, struct vars);
56 static void variable_free(struct variable *var)
59 struct variable *next = var->next;
60 isl_mat_free(var->list);
61 isl_vec_free(var->def);
68 static void vars_free(struct vars *v)
76 static void vars_drop(struct vars *v, int n)
87 struct variable *next = var->next;
88 isl_mat_free(var->list);
89 isl_vec_free(var->def);
97 static struct variable *variable_new(struct vars *v, const char *name, int len,
100 struct variable *var;
101 var = isl_calloc_type(v->ctx, struct variable);
104 var->name = strdup(name);
105 var->name[len] = '\0';
115 static int vars_pos(struct vars *v, const char *s, int len)
122 for (q = v->v; q; q = q->next) {
123 if (strncmp(q->name, s, len) == 0 && q->name[len] == '\0')
130 v->v = variable_new(v, s, len, v->n);
138 static int vars_add_anon(struct vars *v)
140 v->v = variable_new(v, "", 0, v->n);
149 static __isl_give isl_basic_map *set_name(__isl_take isl_basic_map *bmap,
150 enum isl_dim_type type, unsigned pos, char *name)
159 prime = strchr(name, '\'');
162 bmap = isl_basic_map_set_dim_name(bmap, type, pos, name);
169 /* Obtain next token, with some preprocessing.
170 * In particular, evaluate expressions of the form x^y,
171 * with x and y values.
173 static struct isl_token *next_token(struct isl_stream *s)
175 struct isl_token *tok, *tok2;
177 tok = isl_stream_next_token(s);
178 if (!tok || tok->type != ISL_TOKEN_VALUE)
180 if (!isl_stream_eat_if_available(s, '^'))
182 tok2 = isl_stream_next_token(s);
183 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
184 isl_stream_error(s, tok2, "expecting constant value");
188 isl_int_pow_ui(tok->u.v, tok->u.v, isl_int_get_ui(tok2->u.v));
190 isl_token_free(tok2);
194 isl_token_free(tok2);
198 static int accept_cst_factor(struct isl_stream *s, isl_int *f)
200 struct isl_token *tok;
203 if (!tok || tok->type != ISL_TOKEN_VALUE) {
204 isl_stream_error(s, tok, "expecting constant value");
208 isl_int_mul(*f, *f, tok->u.v);
212 if (isl_stream_eat_if_available(s, '*'))
213 return accept_cst_factor(s, f);
221 /* Given an affine expression aff, return an affine expression
222 * for aff % d, with d the next token on the stream, which is
223 * assumed to be a constant.
225 * We introduce an integer division q = [aff/d] and the result
226 * is set to aff - d q.
228 static __isl_give isl_vec *affine_mod(struct isl_stream *s,
229 struct vars *v, __isl_take isl_vec *aff)
231 struct isl_token *tok;
232 struct variable *var;
236 if (!tok || tok->type != ISL_TOKEN_VALUE) {
237 isl_stream_error(s, tok, "expecting constant value");
241 if (vars_add_anon(v) < 0)
246 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
249 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
250 isl_int_set_si(var->def->el[1 + aff->size], 0);
251 isl_int_set(var->def->el[0], tok->u.v);
253 mod = isl_vec_alloc(v->ctx, 1 + v->n);
257 isl_seq_cpy(mod->el, aff->el, aff->size);
258 isl_int_neg(mod->el[aff->size], tok->u.v);
269 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v);
270 static int read_div_definition(struct isl_stream *s, struct vars *v);
271 static int read_minmax_definition(struct isl_stream *s, struct vars *v);
273 static __isl_give isl_vec *accept_affine_factor(struct isl_stream *s,
276 struct isl_token *tok = NULL;
281 isl_stream_error(s, NULL, "unexpected EOF");
284 if (tok->type == ISL_TOKEN_IDENT) {
286 int pos = vars_pos(v, tok->u.s, -1);
290 isl_stream_error(s, tok, "unknown identifier");
294 aff = isl_vec_alloc(v->ctx, 1 + v->n);
297 isl_seq_clr(aff->el, aff->size);
298 isl_int_set_si(aff->el[1 + pos], 1);
300 } else if (tok->type == ISL_TOKEN_VALUE) {
301 if (isl_stream_eat_if_available(s, '*')) {
302 aff = accept_affine_factor(s, v);
303 aff = isl_vec_scale(aff, tok->u.v);
305 aff = isl_vec_alloc(v->ctx, 1 + v->n);
308 isl_seq_clr(aff->el, aff->size);
309 isl_int_set(aff->el[0], tok->u.v);
312 } else if (tok->type == '(') {
315 aff = accept_affine(s, v);
318 if (isl_stream_eat(s, ')'))
320 } else if (tok->type == '[' ||
321 tok->type == ISL_TOKEN_FLOORD ||
322 tok->type == ISL_TOKEN_CEILD) {
323 int ceil = tok->type == ISL_TOKEN_CEILD;
324 struct variable *var;
325 if (vars_add_anon(v) < 0)
328 aff = isl_vec_alloc(v->ctx, 1 + v->n);
331 isl_seq_clr(aff->el, aff->size);
332 isl_int_set_si(aff->el[1 + v->n - 1], ceil ? -1 : 1);
333 isl_stream_push_token(s, tok);
335 if (read_div_definition(s, v) < 0)
338 isl_seq_neg(var->def->el + 1, var->def->el + 1,
340 aff = isl_vec_zero_extend(aff, 1 + v->n);
341 } else if (tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX) {
342 if (vars_add_anon(v) < 0)
344 aff = isl_vec_alloc(v->ctx, 1 + v->n);
347 isl_seq_clr(aff->el, aff->size);
348 isl_int_set_si(aff->el[1 + v->n - 1], 1);
349 isl_stream_push_token(s, tok);
351 if (read_minmax_definition(s, v) < 0)
353 aff = isl_vec_zero_extend(aff, 1 + v->n);
355 isl_stream_error(s, tok, "expecting factor");
358 if (isl_stream_eat_if_available(s, '%'))
359 return affine_mod(s, v, aff);
360 if (isl_stream_eat_if_available(s, '*')) {
363 isl_int_set_si(f, 1);
364 if (accept_cst_factor(s, &f) < 0) {
368 aff = isl_vec_scale(aff, f);
380 static struct isl_vec *accept_affine(struct isl_stream *s, struct vars *v)
382 struct isl_token *tok = NULL;
386 aff = isl_vec_alloc(v->ctx, 1 + v->n);
389 isl_seq_clr(aff->el, aff->size);
394 isl_stream_error(s, NULL, "unexpected EOF");
397 if (tok->type == '-') {
402 if (tok->type == '(' || tok->type == '[' ||
403 tok->type == ISL_TOKEN_MIN || tok->type == ISL_TOKEN_MAX ||
404 tok->type == ISL_TOKEN_FLOORD ||
405 tok->type == ISL_TOKEN_CEILD ||
406 tok->type == ISL_TOKEN_IDENT) {
408 isl_stream_push_token(s, tok);
410 aff2 = accept_affine_factor(s, v);
412 aff2 = isl_vec_scale(aff2, s->ctx->negone);
413 aff = isl_vec_zero_extend(aff, 1 + v->n);
414 aff = isl_vec_add(aff, aff2);
418 } else if (tok->type == ISL_TOKEN_VALUE) {
420 isl_int_neg(tok->u.v, tok->u.v);
421 if (isl_stream_eat_if_available(s, '*') ||
422 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
424 aff2 = accept_affine_factor(s, v);
425 aff2 = isl_vec_scale(aff2, tok->u.v);
426 aff = isl_vec_zero_extend(aff, 1 + v->n);
427 aff = isl_vec_add(aff, aff2);
431 isl_int_add(aff->el[0], aff->el[0], tok->u.v);
435 isl_stream_error(s, tok, "unexpected isl_token");
436 isl_stream_push_token(s, tok);
443 if (tok && tok->type == '-') {
446 } else if (tok && tok->type == '+') {
449 } else if (tok && tok->type == ISL_TOKEN_VALUE &&
450 isl_int_is_neg(tok->u.v)) {
451 isl_stream_push_token(s, tok);
454 isl_stream_push_token(s, tok);
466 /* Add any variables in the variable list "v" that are not already in "bmap"
467 * as existentially quantified variables in "bmap".
469 static __isl_give isl_basic_map *add_divs(__isl_take isl_basic_map *bmap,
474 struct variable *var;
476 extra = v->n - isl_basic_map_total_dim(bmap);
481 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
482 extra, 0, 2 * extra);
484 for (i = 0; i < extra; ++i)
485 if (isl_basic_map_alloc_div(bmap) < 0)
488 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
489 int k = bmap->n_div - 1 - i;
491 isl_seq_cpy(bmap->div[k], var->def->el, var->def->size);
492 isl_seq_clr(bmap->div[k] + var->def->size,
493 2 + v->n - var->def->size);
495 if (isl_basic_map_add_div_constraints(bmap, k) < 0)
501 isl_basic_map_free(bmap);
505 static __isl_give isl_basic_map *read_var_def(struct isl_stream *s,
506 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
509 isl_basic_map *def = NULL;
514 if (vars_add_anon(v) < 0)
518 vec = accept_affine(s, v);
522 dim = isl_basic_map_get_dim(bmap);
523 def = isl_basic_map_universe(dim);
524 def = add_divs(def, v);
525 def = isl_basic_map_extend_constraints(def, 1, 0);
526 k = isl_basic_map_alloc_equality(def);
528 isl_seq_cpy(def->eq[k], vec->el, vec->size);
529 isl_int_set_si(def->eq[k][1 + n - 1], -1);
535 vars_drop(v, v->n - n);
537 def = isl_basic_map_simplify(def);
538 def = isl_basic_map_finalize(def);
539 bmap = isl_basic_map_intersect(bmap, def);
542 isl_basic_map_free(bmap);
543 isl_basic_map_free(def);
547 static __isl_give isl_basic_map *read_var_list(struct isl_stream *s,
548 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
551 struct isl_token *tok;
553 while ((tok = next_token(s)) != NULL) {
556 if (tok->type == ISL_TOKEN_IDENT) {
558 int p = vars_pos(v, tok->u.s, -1);
565 bmap = isl_basic_map_add(bmap, type, 1);
566 bmap = set_name(bmap, type, i, v->v->name);
568 } else if (tok->type == ISL_TOKEN_IDENT ||
569 tok->type == ISL_TOKEN_VALUE ||
572 if (type == isl_dim_param) {
573 isl_stream_error(s, tok,
574 "expecting unique identifier");
577 isl_stream_push_token(s, tok);
579 bmap = isl_basic_map_add(bmap, type, 1);
580 bmap = read_var_def(s, bmap, type, v);
584 tok = isl_stream_next_token(s);
585 if (!tok || tok->type != ',')
592 isl_stream_push_token(s, tok);
597 isl_basic_map_free(bmap);
601 static __isl_give isl_mat *accept_affine_list(struct isl_stream *s,
606 struct isl_token *tok = NULL;
608 vec = accept_affine(s, v);
609 mat = isl_mat_from_row_vec(vec);
614 tok = isl_stream_next_token(s);
616 isl_stream_error(s, NULL, "unexpected EOF");
619 if (tok->type != ',') {
620 isl_stream_push_token(s, tok);
625 vec = accept_affine(s, v);
626 mat = isl_mat_add_zero_cols(mat, 1 + v->n - isl_mat_cols(mat));
627 mat = isl_mat_vec_concat(mat, vec);
638 static int read_minmax_definition(struct isl_stream *s, struct vars *v)
640 struct isl_token *tok;
641 struct variable *var;
645 tok = isl_stream_next_token(s);
648 var->sign = tok->type == ISL_TOKEN_MIN ? -1 : 1;
651 if (isl_stream_eat(s, '('))
654 var->list = accept_affine_list(s, v);
658 if (isl_stream_eat(s, ')'))
664 static int read_div_definition(struct isl_stream *s, struct vars *v)
666 struct isl_token *tok;
669 struct variable *var;
672 if (isl_stream_eat_if_available(s, ISL_TOKEN_FLOORD) ||
673 isl_stream_eat_if_available(s, ISL_TOKEN_CEILD)) {
675 if (isl_stream_eat(s, '('))
678 if (isl_stream_eat(s, '['))
680 if (isl_stream_eat_if_available(s, '('))
686 aff = accept_affine(s, v);
690 var->def = isl_vec_alloc(s->ctx, 2 + v->n);
696 isl_seq_cpy(var->def->el + 1, aff->el, aff->size);
701 if (isl_stream_eat(s, ','))
704 if (seen_paren && isl_stream_eat(s, ')'))
706 if (isl_stream_eat(s, '/'))
713 if (tok->type != ISL_TOKEN_VALUE) {
714 isl_stream_error(s, tok, "expected denominator");
715 isl_stream_push_token(s, tok);
718 isl_int_set(var->def->el[0], tok->u.v);
722 if (isl_stream_eat(s, ')'))
725 if (isl_stream_eat(s, ']'))
732 static struct isl_basic_map *add_div_definition(struct isl_stream *s,
733 struct vars *v, struct isl_basic_map *bmap, int pos)
735 struct variable *var = v->v;
736 unsigned o_out = isl_basic_map_offset(bmap, isl_dim_out) - 1;
738 if (read_div_definition(s, v) < 0)
741 if (isl_basic_map_add_div_constraints_var(bmap, o_out + pos,
747 isl_basic_map_free(bmap);
751 static struct isl_basic_map *read_defined_var_list(struct isl_stream *s,
752 struct vars *v, struct isl_basic_map *bmap)
754 struct isl_token *tok;
756 while ((tok = isl_stream_next_token(s)) != NULL) {
759 unsigned n_out = isl_basic_map_dim(bmap, isl_dim_out);
761 if (tok->type != ISL_TOKEN_IDENT)
764 p = vars_pos(v, tok->u.s, -1);
768 isl_stream_error(s, tok, "expecting unique identifier");
772 bmap = isl_basic_map_cow(bmap);
773 bmap = isl_basic_map_add(bmap, isl_dim_out, 1);
774 bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
778 tok = isl_stream_next_token(s);
779 if (tok && tok->type == '=') {
781 bmap = add_div_definition(s, v, bmap, n_out);
782 tok = isl_stream_next_token(s);
785 if (!tok || tok->type != ',')
791 isl_stream_push_token(s, tok);
796 isl_basic_map_free(bmap);
800 static int next_is_tuple(struct isl_stream *s)
802 struct isl_token *tok;
805 tok = isl_stream_next_token(s);
808 if (tok->type == '[') {
809 isl_stream_push_token(s, tok);
812 if (tok->type != ISL_TOKEN_IDENT && !tok->is_keyword) {
813 isl_stream_push_token(s, tok);
817 is_tuple = isl_stream_next_token_is(s, '[');
819 isl_stream_push_token(s, tok);
824 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
825 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v);
827 static __isl_give isl_basic_map *read_nested_tuple(struct isl_stream *s,
828 __isl_take isl_basic_map *bmap, struct vars *v)
830 bmap = read_tuple(s, bmap, isl_dim_in, v);
831 if (isl_stream_eat(s, ISL_TOKEN_TO))
833 bmap = read_tuple(s, bmap, isl_dim_out, v);
834 bmap = isl_basic_map_from_range(isl_basic_map_wrap(bmap));
837 isl_basic_map_free(bmap);
841 static __isl_give isl_basic_map *read_tuple(struct isl_stream *s,
842 __isl_take isl_basic_map *bmap, enum isl_dim_type type, struct vars *v)
844 struct isl_token *tok;
847 tok = isl_stream_next_token(s);
848 if (tok && (tok->type == ISL_TOKEN_IDENT || tok->is_keyword)) {
849 name = strdup(tok->u.s);
853 tok = isl_stream_next_token(s);
855 if (!tok || tok->type != '[') {
856 isl_stream_error(s, tok, "expecting '['");
860 if (type != isl_dim_param && next_is_tuple(s)) {
861 isl_dim *dim = isl_basic_map_get_dim(bmap);
862 int nparam = isl_dim_size(dim, isl_dim_param);
863 int n_in = isl_dim_size(dim, isl_dim_in);
864 isl_basic_map *nested;
865 if (type == isl_dim_out)
866 dim = isl_dim_move(dim, isl_dim_param, nparam,
867 isl_dim_in, 0, n_in);
868 nested = isl_basic_map_alloc_dim(dim, 0, 0, 0);
869 nested = read_nested_tuple(s, nested, v);
870 if (type == isl_dim_in) {
871 nested = isl_basic_map_reverse(nested);
872 bmap = isl_basic_map_intersect(nested, bmap);
875 dim = isl_dim_range(isl_basic_map_get_dim(nested));
876 dim = isl_dim_drop(dim, isl_dim_param, nparam, n_in);
877 dim = isl_dim_join(isl_basic_map_get_dim(bmap), dim);
878 bset = isl_basic_map_domain(bmap);
879 nested = isl_basic_map_reset_dim(nested, dim);
880 bmap = isl_basic_map_intersect_domain(nested, bset);
883 bmap = read_var_list(s, bmap, type, v);
884 tok = isl_stream_next_token(s);
885 if (!tok || tok->type != ']') {
886 isl_stream_error(s, tok, "expecting ']'");
892 bmap = isl_basic_map_set_tuple_name(bmap, type, name);
900 isl_basic_map_free(bmap);
904 static __isl_give isl_basic_map *construct_constraint(
905 __isl_take isl_basic_map *bmap, enum isl_token_type type,
906 isl_int *left, isl_int *right)
914 len = 1 + isl_basic_map_total_dim(bmap);
917 k = isl_basic_map_alloc_inequality(bmap);
920 if (type == ISL_TOKEN_LE)
921 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
924 else if (type == ISL_TOKEN_GE)
925 isl_seq_combine(bmap->ineq[k], ctx->one, left,
928 else if (type == ISL_TOKEN_LT) {
929 isl_seq_combine(bmap->ineq[k], ctx->negone, left,
932 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
933 } else if (type == ISL_TOKEN_GT) {
934 isl_seq_combine(bmap->ineq[k], ctx->one, left,
937 isl_int_sub_ui(bmap->ineq[k][0], bmap->ineq[k][0], 1);
939 isl_seq_combine(bmap->ineq[k], ctx->one, left,
942 isl_basic_map_inequality_to_equality(bmap, k);
947 isl_basic_map_free(bmap);
951 static int is_comparator(struct isl_token *tok)
968 /* Add any variables in the variable list "v" that are not already in "bmap"
969 * as output variables in "bmap".
971 static __isl_give isl_basic_map *add_lifted_divs(__isl_take isl_basic_map *bmap,
976 struct variable *var;
978 extra = v->n - isl_basic_map_total_dim(bmap);
983 bmap = isl_basic_map_add(bmap, isl_dim_out, extra);
984 bmap = isl_basic_map_extend_dim(bmap, isl_basic_map_get_dim(bmap),
987 for (i = 0, var = v->v; i < extra; ++i, var = var->next) {
990 var->def = isl_vec_zero_extend(var->def, 2 + v->n);
993 if (isl_basic_map_add_div_constraints_var(bmap, var->pos,
1000 isl_basic_map_free(bmap);
1004 static struct isl_basic_map *add_constraint(struct isl_stream *s,
1005 struct vars *v, struct isl_basic_map *bmap)
1008 struct isl_token *tok = NULL;
1009 struct isl_mat *aff1 = NULL, *aff2 = NULL;
1011 bmap = isl_basic_map_cow(bmap);
1013 aff1 = accept_affine_list(s, v);
1016 tok = isl_stream_next_token(s);
1017 if (!is_comparator(tok)) {
1018 isl_stream_error(s, tok, "missing operator");
1020 isl_stream_push_token(s, tok);
1025 aff2 = accept_affine_list(s, v);
1029 aff1 = isl_mat_add_zero_cols(aff1, aff2->n_col - aff1->n_col);
1032 bmap = add_lifted_divs(bmap, v);
1033 bmap = isl_basic_map_extend_constraints(bmap, 0,
1034 aff1->n_row * aff2->n_row);
1035 for (i = 0; i < aff1->n_row; ++i)
1036 for (j = 0; j < aff2->n_row; ++j)
1037 bmap = construct_constraint(bmap, tok->type,
1038 aff1->row[i], aff2->row[j]);
1039 isl_token_free(tok);
1043 tok = isl_stream_next_token(s);
1044 if (!is_comparator(tok)) {
1046 isl_stream_push_token(s, tok);
1055 isl_token_free(tok);
1058 isl_basic_map_free(bmap);
1062 /* Return first variable, starting at n, representing a min or max,
1063 * or NULL if there is no such variable.
1065 static struct variable *first_minmax(struct vars *v, int n)
1067 struct variable *first = NULL;
1068 struct variable *var;
1070 for (var = v->v; var && var->pos >= n; var = var->next)
1077 /* Check whether the variable at the given position only occurs in
1078 * inequalities and only with the given sign.
1080 static int all_coefficients_of_sign(__isl_keep isl_map *map, int pos, int sign)
1087 for (i = 0; i < map->n; ++i) {
1088 isl_basic_map *bmap = map->p[i];
1090 for (j = 0; j < bmap->n_eq; ++j)
1091 if (!isl_int_is_zero(bmap->eq[j][1 + pos]))
1093 for (j = 0; j < bmap->n_ineq; ++j) {
1094 int s = isl_int_sgn(bmap->ineq[j][1 + pos]);
1105 /* Given a variable m which represents a min or a max of n expressions
1106 * b_i, add the constraints
1110 * in case of a min (var->sign < 0) and m >= b_i in case of a max.
1112 static __isl_give isl_map *bound_minmax(__isl_take isl_map *map,
1113 struct variable *var)
1116 isl_basic_map *bound;
1119 total = isl_map_dim(map, isl_dim_all);
1120 bound = isl_basic_map_alloc_dim(isl_map_get_dim(map),
1121 0, 0, var->list->n_row);
1123 for (i = 0; i < var->list->n_row; ++i) {
1124 k = isl_basic_map_alloc_inequality(bound);
1128 isl_seq_cpy(bound->ineq[k], var->list->row[i],
1131 isl_seq_neg(bound->ineq[k], var->list->row[i],
1133 isl_int_set_si(bound->ineq[k][1 + var->pos], var->sign);
1134 isl_seq_clr(bound->ineq[k] + var->list->n_col,
1135 1 + total - var->list->n_col);
1138 map = isl_map_intersect(map, isl_map_from_basic_map(bound));
1142 isl_basic_map_free(bound);
1147 /* Given a variable m which represents a min (or max) of n expressions
1148 * b_i, add constraints that assigns the minimal upper bound to m, i.e.,
1149 * divide the space into cells where one
1150 * of the upper bounds is smaller than all the others and assign
1151 * this upper bound to m.
1153 * In particular, if there are n bounds b_i, then the input map
1154 * is split into n pieces, each with the extra constraints
1157 * b_i <= b_j for j > i
1158 * b_i < b_j for j < i
1160 * in case of a min (var->sign < 0) and similarly in case of a max.
1162 * Note: this function is very similar to set_minimum in isl_tab_pip.c
1163 * Perhaps we should try to merge the two.
1165 static __isl_give isl_map *set_minmax(__isl_take isl_map *map,
1166 struct variable *var)
1169 isl_basic_map *bmap = NULL;
1171 isl_map *split = NULL;
1174 ctx = isl_map_get_ctx(map);
1175 total = isl_map_dim(map, isl_dim_all);
1176 split = isl_map_alloc_dim(isl_map_get_dim(map),
1177 var->list->n_row, ISL_SET_DISJOINT);
1179 for (i = 0; i < var->list->n_row; ++i) {
1180 bmap = isl_basic_map_alloc_dim(isl_map_get_dim(map), 0,
1181 1, var->list->n_row - 1);
1182 k = isl_basic_map_alloc_equality(bmap);
1185 isl_seq_cpy(bmap->eq[k], var->list->row[i], var->list->n_col);
1186 isl_int_set_si(bmap->eq[k][1 + var->pos], -1);
1187 for (j = 0; j < var->list->n_row; ++j) {
1190 k = isl_basic_map_alloc_inequality(bmap);
1194 isl_seq_combine(bmap->ineq[k],
1195 ctx->one, var->list->row[j],
1196 ctx->negone, var->list->row[i],
1199 isl_seq_combine(bmap->ineq[k],
1200 ctx->negone, var->list->row[j],
1201 ctx->one, var->list->row[i],
1203 isl_seq_clr(bmap->ineq[k] + var->list->n_col,
1204 1 + total - var->list->n_col);
1206 isl_int_sub_ui(bmap->ineq[k][0],
1207 bmap->ineq[k][0], 1);
1209 bmap = isl_basic_map_finalize(bmap);
1210 split = isl_map_add_basic_map(split, bmap);
1213 map = isl_map_intersect(map, split);
1217 isl_basic_map_free(bmap);
1218 isl_map_free(split);
1223 /* Plug in the definitions of all min and max expressions.
1224 * If a min expression only appears in inequalities and only
1225 * with a positive coefficient, then we can simply bound
1226 * the variable representing the min by its defining terms
1227 * and similarly for a max expression.
1228 * Otherwise, we have to assign the different terms to the
1229 * variable under the condition that the assigned term is smaller
1230 * than the other terms.
1232 static __isl_give isl_map *add_minmax(__isl_take isl_map *map,
1233 struct vars *v, int n)
1235 struct variable *var;
1238 var = first_minmax(v, n);
1241 if (all_coefficients_of_sign(map, var->pos, -var->sign))
1242 map = bound_minmax(map, var);
1244 map = set_minmax(map, var);
1251 static isl_map *read_constraint(struct isl_stream *s,
1252 struct vars *v, __isl_take isl_basic_map *bmap)
1261 bmap = isl_basic_set_unwrap(isl_basic_set_lift(isl_basic_map_wrap(bmap)));
1262 total = isl_basic_map_total_dim(bmap);
1263 while (v->n < total)
1264 if (vars_add_anon(v) < 0)
1267 bmap = add_constraint(s, v, bmap);
1268 bmap = isl_basic_map_simplify(bmap);
1269 bmap = isl_basic_map_finalize(bmap);
1271 map = isl_map_from_basic_map(bmap);
1273 map = add_minmax(map, v, n);
1275 map = isl_set_unwrap(isl_map_domain(map));
1277 vars_drop(v, v->n - n);
1281 isl_basic_map_free(bmap);
1285 static struct isl_map *read_disjuncts(struct isl_stream *s,
1286 struct vars *v, __isl_take isl_basic_map *bmap);
1288 static __isl_give isl_map *read_exists(struct isl_stream *s,
1289 struct vars *v, __isl_take isl_basic_map *bmap)
1292 int seen_paren = isl_stream_eat_if_available(s, '(');
1293 isl_map *map = NULL;
1295 bmap = isl_basic_map_from_domain(isl_basic_map_wrap(bmap));
1296 bmap = read_defined_var_list(s, v, bmap);
1298 if (isl_stream_eat(s, ':'))
1301 map = read_disjuncts(s, v, bmap);
1302 map = isl_set_unwrap(isl_map_domain(map));
1305 vars_drop(v, v->n - n);
1306 if (seen_paren && isl_stream_eat(s, ')'))
1311 isl_basic_map_free(bmap);
1316 static __isl_give isl_map *read_conjunct(struct isl_stream *s,
1317 struct vars *v, __isl_take isl_basic_map *bmap)
1321 if (isl_stream_eat_if_available(s, '(')) {
1322 map = read_disjuncts(s, v, bmap);
1323 if (isl_stream_eat(s, ')'))
1328 if (isl_stream_eat_if_available(s, ISL_TOKEN_EXISTS))
1329 return read_exists(s, v, bmap);
1331 if (isl_stream_eat_if_available(s, ISL_TOKEN_TRUE))
1332 return isl_map_from_basic_map(bmap);
1334 if (isl_stream_eat_if_available(s, ISL_TOKEN_FALSE)) {
1335 isl_dim *dim = isl_basic_map_get_dim(bmap);
1336 isl_basic_map_free(bmap);
1337 return isl_map_empty(dim);
1340 return read_constraint(s, v, bmap);
1346 static __isl_give isl_map *read_conjuncts(struct isl_stream *s,
1347 struct vars *v, __isl_take isl_basic_map *bmap)
1352 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1353 map = read_conjunct(s, v, isl_basic_map_copy(bmap));
1356 t = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1357 map = isl_map_subtract(t, map);
1360 while (isl_stream_eat_if_available(s, ISL_TOKEN_AND)) {
1363 negate = isl_stream_eat_if_available(s, ISL_TOKEN_NOT);
1364 map_i = read_conjunct(s, v, isl_basic_map_copy(bmap));
1366 map = isl_map_subtract(map, map_i);
1368 map = isl_map_intersect(map, map_i);
1371 isl_basic_map_free(bmap);
1375 static struct isl_map *read_disjuncts(struct isl_stream *s,
1376 struct vars *v, __isl_take isl_basic_map *bmap)
1378 struct isl_map *map;
1380 if (isl_stream_next_token_is(s, '}')) {
1381 isl_dim *dim = isl_basic_map_get_dim(bmap);
1382 isl_basic_map_free(bmap);
1383 return isl_map_universe(dim);
1386 map = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1387 while (isl_stream_eat_if_available(s, ISL_TOKEN_OR)) {
1390 map_i = read_conjuncts(s, v, isl_basic_map_copy(bmap));
1391 map = isl_map_union(map, map_i);
1394 isl_basic_map_free(bmap);
1398 static int polylib_pos_to_isl_pos(__isl_keep isl_basic_map *bmap, int pos)
1400 if (pos < isl_basic_map_dim(bmap, isl_dim_out))
1401 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1402 isl_basic_map_dim(bmap, isl_dim_in) + pos;
1403 pos -= isl_basic_map_dim(bmap, isl_dim_out);
1405 if (pos < isl_basic_map_dim(bmap, isl_dim_in))
1406 return 1 + isl_basic_map_dim(bmap, isl_dim_param) + pos;
1407 pos -= isl_basic_map_dim(bmap, isl_dim_in);
1409 if (pos < isl_basic_map_dim(bmap, isl_dim_div))
1410 return 1 + isl_basic_map_dim(bmap, isl_dim_param) +
1411 isl_basic_map_dim(bmap, isl_dim_in) +
1412 isl_basic_map_dim(bmap, isl_dim_out) + pos;
1413 pos -= isl_basic_map_dim(bmap, isl_dim_div);
1415 if (pos < isl_basic_map_dim(bmap, isl_dim_param))
1421 static __isl_give isl_basic_map *basic_map_read_polylib_constraint(
1422 struct isl_stream *s, __isl_take isl_basic_map *bmap)
1425 struct isl_token *tok;
1435 nparam = isl_basic_map_dim(bmap, isl_dim_param);
1436 dim = isl_basic_map_dim(bmap, isl_dim_out);
1438 tok = isl_stream_next_token(s);
1439 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1440 isl_stream_error(s, tok, "expecting coefficient");
1442 isl_stream_push_token(s, tok);
1445 if (!tok->on_new_line) {
1446 isl_stream_error(s, tok, "coefficient should appear on new line");
1447 isl_stream_push_token(s, tok);
1451 type = isl_int_get_si(tok->u.v);
1452 isl_token_free(tok);
1454 isl_assert(s->ctx, type == 0 || type == 1, goto error);
1456 k = isl_basic_map_alloc_equality(bmap);
1459 k = isl_basic_map_alloc_inequality(bmap);
1465 for (j = 0; j < 1 + isl_basic_map_total_dim(bmap); ++j) {
1467 tok = isl_stream_next_token(s);
1468 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1469 isl_stream_error(s, tok, "expecting coefficient");
1471 isl_stream_push_token(s, tok);
1474 if (tok->on_new_line) {
1475 isl_stream_error(s, tok,
1476 "coefficient should not appear on new line");
1477 isl_stream_push_token(s, tok);
1480 pos = polylib_pos_to_isl_pos(bmap, j);
1481 isl_int_set(c[pos], tok->u.v);
1482 isl_token_free(tok);
1487 isl_basic_map_free(bmap);
1491 static __isl_give isl_basic_map *basic_map_read_polylib(struct isl_stream *s,
1495 struct isl_token *tok;
1496 struct isl_token *tok2;
1499 unsigned in = 0, out, local = 0;
1500 struct isl_basic_map *bmap = NULL;
1505 tok = isl_stream_next_token(s);
1507 isl_stream_error(s, NULL, "unexpected EOF");
1510 tok2 = isl_stream_next_token(s);
1512 isl_token_free(tok);
1513 isl_stream_error(s, NULL, "unexpected EOF");
1516 if (tok->type != ISL_TOKEN_VALUE || tok2->type != ISL_TOKEN_VALUE) {
1517 isl_stream_push_token(s, tok2);
1518 isl_stream_push_token(s, tok);
1519 isl_stream_error(s, NULL,
1520 "expecting constraint matrix dimensions");
1523 n_row = isl_int_get_si(tok->u.v);
1524 n_col = isl_int_get_si(tok2->u.v);
1525 on_new_line = tok2->on_new_line;
1526 isl_token_free(tok2);
1527 isl_token_free(tok);
1528 isl_assert(s->ctx, !on_new_line, return NULL);
1529 isl_assert(s->ctx, n_row >= 0, return NULL);
1530 isl_assert(s->ctx, n_col >= 2 + nparam, return NULL);
1531 tok = isl_stream_next_token_on_same_line(s);
1533 if (tok->type != ISL_TOKEN_VALUE) {
1534 isl_stream_error(s, tok,
1535 "expecting number of output dimensions");
1536 isl_stream_push_token(s, tok);
1539 out = isl_int_get_si(tok->u.v);
1540 isl_token_free(tok);
1542 tok = isl_stream_next_token_on_same_line(s);
1543 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1544 isl_stream_error(s, tok,
1545 "expecting number of input dimensions");
1547 isl_stream_push_token(s, tok);
1550 in = isl_int_get_si(tok->u.v);
1551 isl_token_free(tok);
1553 tok = isl_stream_next_token_on_same_line(s);
1554 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1555 isl_stream_error(s, tok,
1556 "expecting number of existentials");
1558 isl_stream_push_token(s, tok);
1561 local = isl_int_get_si(tok->u.v);
1562 isl_token_free(tok);
1564 tok = isl_stream_next_token_on_same_line(s);
1565 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1566 isl_stream_error(s, tok,
1567 "expecting number of parameters");
1569 isl_stream_push_token(s, tok);
1572 nparam = isl_int_get_si(tok->u.v);
1573 isl_token_free(tok);
1574 if (n_col != 1 + out + in + local + nparam + 1) {
1575 isl_stream_error(s, NULL,
1576 "dimensions don't match");
1580 out = n_col - 2 - nparam;
1581 bmap = isl_basic_map_alloc(s->ctx, nparam, in, out, local, n_row, n_row);
1585 for (i = 0; i < local; ++i) {
1586 int k = isl_basic_map_alloc_div(bmap);
1589 isl_seq_clr(bmap->div[k], 1 + 1 + nparam + in + out + local);
1592 for (i = 0; i < n_row; ++i)
1593 bmap = basic_map_read_polylib_constraint(s, bmap);
1595 tok = isl_stream_next_token_on_same_line(s);
1597 isl_stream_error(s, tok, "unexpected extra token on line");
1598 isl_stream_push_token(s, tok);
1602 bmap = isl_basic_map_simplify(bmap);
1603 bmap = isl_basic_map_finalize(bmap);
1606 isl_basic_map_free(bmap);
1610 static struct isl_map *map_read_polylib(struct isl_stream *s, int nparam)
1612 struct isl_token *tok;
1613 struct isl_token *tok2;
1615 struct isl_map *map;
1617 tok = isl_stream_next_token(s);
1619 isl_stream_error(s, NULL, "unexpected EOF");
1622 tok2 = isl_stream_next_token_on_same_line(s);
1623 if (tok2 && tok2->type == ISL_TOKEN_VALUE) {
1624 isl_stream_push_token(s, tok2);
1625 isl_stream_push_token(s, tok);
1626 return isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1629 isl_stream_error(s, tok2, "unexpected token");
1630 isl_stream_push_token(s, tok2);
1631 isl_stream_push_token(s, tok);
1634 n = isl_int_get_si(tok->u.v);
1635 isl_token_free(tok);
1637 isl_assert(s->ctx, n >= 1, return NULL);
1639 map = isl_map_from_basic_map(basic_map_read_polylib(s, nparam));
1641 for (i = 1; map && i < n; ++i)
1642 map = isl_map_union(map,
1643 isl_map_from_basic_map(basic_map_read_polylib(s, nparam)));
1648 static int optional_power(struct isl_stream *s)
1651 struct isl_token *tok;
1653 tok = isl_stream_next_token(s);
1656 if (tok->type != '^') {
1657 isl_stream_push_token(s, tok);
1660 isl_token_free(tok);
1661 tok = isl_stream_next_token(s);
1662 if (!tok || tok->type != ISL_TOKEN_VALUE) {
1663 isl_stream_error(s, tok, "expecting exponent");
1665 isl_stream_push_token(s, tok);
1668 pow = isl_int_get_si(tok->u.v);
1669 isl_token_free(tok);
1673 static __isl_give isl_div *read_div(struct isl_stream *s,
1674 __isl_take isl_dim *dim, struct vars *v)
1677 isl_basic_map *bmap;
1680 bmap = isl_basic_map_universe(dim);
1682 if (vars_add_anon(v) < 0)
1684 if (read_div_definition(s, v) < 0)
1686 bmap = add_divs(bmap, v);
1687 bmap = isl_basic_map_order_divs(bmap);
1690 vars_drop(v, v->n - n);
1692 return isl_basic_map_div(bmap, bmap->n_div - 1);
1694 isl_basic_map_free(bmap);
1698 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1699 __isl_keep isl_basic_map *bmap, struct vars *v);
1701 static __isl_give isl_qpolynomial *read_factor(struct isl_stream *s,
1702 __isl_keep isl_basic_map *bmap, struct vars *v)
1704 struct isl_qpolynomial *qp;
1705 struct isl_token *tok;
1707 tok = next_token(s);
1709 isl_stream_error(s, NULL, "unexpected EOF");
1712 if (tok->type == '(') {
1715 isl_token_free(tok);
1716 qp = read_term(s, bmap, v);
1719 if (isl_stream_eat(s, ')'))
1721 pow = optional_power(s);
1722 qp = isl_qpolynomial_pow(qp, pow);
1723 } else if (tok->type == ISL_TOKEN_VALUE) {
1724 struct isl_token *tok2;
1725 tok2 = isl_stream_next_token(s);
1726 if (tok2 && tok2->type == '/') {
1727 isl_token_free(tok2);
1728 tok2 = next_token(s);
1729 if (!tok2 || tok2->type != ISL_TOKEN_VALUE) {
1730 isl_stream_error(s, tok2, "expected denominator");
1731 isl_token_free(tok);
1732 isl_token_free(tok2);
1735 qp = isl_qpolynomial_rat_cst(isl_basic_map_get_dim(bmap),
1736 tok->u.v, tok2->u.v);
1737 isl_token_free(tok2);
1739 isl_stream_push_token(s, tok2);
1740 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1743 isl_token_free(tok);
1744 } else if (tok->type == ISL_TOKEN_INFTY) {
1745 isl_token_free(tok);
1746 qp = isl_qpolynomial_infty(isl_basic_map_get_dim(bmap));
1747 } else if (tok->type == ISL_TOKEN_NAN) {
1748 isl_token_free(tok);
1749 qp = isl_qpolynomial_nan(isl_basic_map_get_dim(bmap));
1750 } else if (tok->type == ISL_TOKEN_IDENT) {
1752 int pos = vars_pos(v, tok->u.s, -1);
1755 isl_token_free(tok);
1759 vars_drop(v, v->n - n);
1760 isl_stream_error(s, tok, "unknown identifier");
1761 isl_token_free(tok);
1764 isl_token_free(tok);
1765 pow = optional_power(s);
1766 qp = isl_qpolynomial_var_pow(isl_basic_map_get_dim(bmap), pos, pow);
1767 } else if (tok->type == '[') {
1771 isl_stream_push_token(s, tok);
1772 div = read_div(s, isl_basic_map_get_dim(bmap), v);
1773 pow = optional_power(s);
1774 qp = isl_qpolynomial_div_pow(div, pow);
1775 } else if (tok->type == '-') {
1776 struct isl_qpolynomial *qp2;
1778 isl_token_free(tok);
1779 qp = isl_qpolynomial_cst(isl_basic_map_get_dim(bmap),
1781 qp2 = read_factor(s, bmap, v);
1782 qp = isl_qpolynomial_mul(qp, qp2);
1784 isl_stream_error(s, tok, "unexpected isl_token");
1785 isl_stream_push_token(s, tok);
1789 if (isl_stream_eat_if_available(s, '*') ||
1790 isl_stream_next_token_is(s, ISL_TOKEN_IDENT)) {
1791 struct isl_qpolynomial *qp2;
1793 qp2 = read_factor(s, bmap, v);
1794 qp = isl_qpolynomial_mul(qp, qp2);
1799 isl_qpolynomial_free(qp);
1803 static __isl_give isl_qpolynomial *read_term(struct isl_stream *s,
1804 __isl_keep isl_basic_map *bmap, struct vars *v)
1806 struct isl_token *tok;
1807 struct isl_qpolynomial *qp;
1809 qp = read_factor(s, bmap, v);
1812 tok = next_token(s);
1816 if (tok->type == '+') {
1817 struct isl_qpolynomial *qp2;
1819 isl_token_free(tok);
1820 qp2 = read_factor(s, bmap, v);
1821 qp = isl_qpolynomial_add(qp, qp2);
1822 } else if (tok->type == '-') {
1823 struct isl_qpolynomial *qp2;
1825 isl_token_free(tok);
1826 qp2 = read_factor(s, bmap, v);
1827 qp = isl_qpolynomial_sub(qp, qp2);
1828 } else if (tok->type == ISL_TOKEN_VALUE &&
1829 isl_int_is_neg(tok->u.v)) {
1830 struct isl_qpolynomial *qp2;
1832 isl_stream_push_token(s, tok);
1833 qp2 = read_factor(s, bmap, v);
1834 qp = isl_qpolynomial_add(qp, qp2);
1836 isl_stream_push_token(s, tok);
1844 static __isl_give isl_map *read_optional_disjuncts(struct isl_stream *s,
1845 __isl_take isl_basic_map *bmap, struct vars *v)
1847 struct isl_token *tok;
1848 struct isl_map *map;
1850 tok = isl_stream_next_token(s);
1852 isl_stream_error(s, NULL, "unexpected EOF");
1855 map = isl_map_from_basic_map(isl_basic_map_copy(bmap));
1856 if (tok->type == ':' ||
1857 (tok->type == ISL_TOKEN_OR && !strcmp(tok->u.s, "|"))) {
1858 isl_token_free(tok);
1859 map = isl_map_intersect(map,
1860 read_disjuncts(s, v, isl_basic_map_copy(bmap)));
1862 isl_stream_push_token(s, tok);
1864 isl_basic_map_free(bmap);
1868 isl_basic_map_free(bmap);
1872 static struct isl_obj obj_read_poly(struct isl_stream *s,
1873 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1875 struct isl_obj obj = { isl_obj_pw_qpolynomial, NULL };
1876 struct isl_pw_qpolynomial *pwqp;
1877 struct isl_qpolynomial *qp;
1878 struct isl_map *map;
1879 struct isl_set *set;
1881 qp = read_term(s, bmap, v);
1882 map = read_optional_disjuncts(s, bmap, v);
1883 set = isl_map_range(map);
1885 pwqp = isl_pw_qpolynomial_alloc(set, qp);
1887 vars_drop(v, v->n - n);
1893 static struct isl_obj obj_read_poly_or_fold(struct isl_stream *s,
1894 __isl_take isl_basic_map *bmap, struct vars *v, int n)
1896 struct isl_obj obj = { isl_obj_pw_qpolynomial_fold, NULL };
1897 isl_qpolynomial *qp;
1898 isl_qpolynomial_fold *fold = NULL;
1899 isl_pw_qpolynomial_fold *pwf;
1903 if (!isl_stream_eat_if_available(s, ISL_TOKEN_MAX))
1904 return obj_read_poly(s, bmap, v, n);
1906 if (isl_stream_eat(s, '('))
1909 qp = read_term(s, bmap, v);
1910 fold = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1912 while (isl_stream_eat_if_available(s, ',')) {
1913 isl_qpolynomial_fold *fold_i;
1914 qp = read_term(s, bmap, v);
1915 fold_i = isl_qpolynomial_fold_alloc(isl_fold_max, qp);
1916 fold = isl_qpolynomial_fold_fold(fold, fold_i);
1919 if (isl_stream_eat(s, ')'))
1922 map = read_optional_disjuncts(s, bmap, v);
1923 set = isl_map_range(map);
1924 pwf = isl_pw_qpolynomial_fold_alloc(isl_fold_max, set, fold);
1926 vars_drop(v, v->n - n);
1931 isl_basic_map_free(bmap);
1932 isl_qpolynomial_fold_free(fold);
1933 obj.type = isl_obj_none;
1937 static int is_rational(struct isl_stream *s)
1939 struct isl_token *tok;
1941 tok = isl_stream_next_token(s);
1944 if (tok->type == ISL_TOKEN_RAT && isl_stream_next_token_is(s, ':')) {
1945 isl_token_free(tok);
1946 isl_stream_eat(s, ':');
1950 isl_stream_push_token(s, tok);
1955 static struct isl_obj obj_read_body(struct isl_stream *s,
1956 __isl_take isl_basic_map *bmap, struct vars *v)
1958 struct isl_map *map = NULL;
1959 struct isl_token *tok;
1960 struct isl_obj obj = { isl_obj_set, NULL };
1964 bmap = isl_basic_map_set_rational(bmap);
1966 if (!next_is_tuple(s))
1967 return obj_read_poly_or_fold(s, bmap, v, n);
1969 bmap = read_tuple(s, bmap, isl_dim_in, v);
1972 tok = isl_stream_next_token(s);
1973 if (tok && tok->type == ISL_TOKEN_TO) {
1974 obj.type = isl_obj_map;
1975 isl_token_free(tok);
1976 if (!next_is_tuple(s)) {
1977 bmap = isl_basic_map_reverse(bmap);
1978 return obj_read_poly_or_fold(s, bmap, v, n);
1980 bmap = read_tuple(s, bmap, isl_dim_out, v);
1984 bmap = isl_basic_map_reverse(bmap);
1986 isl_stream_push_token(s, tok);
1989 map = read_optional_disjuncts(s, bmap, v);
1991 vars_drop(v, v->n - n);
1996 isl_basic_map_free(bmap);
1997 obj.type = isl_obj_none;
2001 static struct isl_obj to_union(isl_ctx *ctx, struct isl_obj obj)
2003 if (obj.type == isl_obj_map) {
2004 obj.v = isl_union_map_from_map(obj.v);
2005 obj.type = isl_obj_union_map;
2006 } else if (obj.type == isl_obj_set) {
2007 obj.v = isl_union_set_from_set(obj.v);
2008 obj.type = isl_obj_union_set;
2009 } else if (obj.type == isl_obj_pw_qpolynomial) {
2010 obj.v = isl_union_pw_qpolynomial_from_pw_qpolynomial(obj.v);
2011 obj.type = isl_obj_union_pw_qpolynomial;
2012 } else if (obj.type == isl_obj_pw_qpolynomial_fold) {
2013 obj.v = isl_union_pw_qpolynomial_fold_from_pw_qpolynomial_fold(obj.v);
2014 obj.type = isl_obj_union_pw_qpolynomial_fold;
2016 isl_assert(ctx, 0, goto error);
2019 obj.type->free(obj.v);
2020 obj.type = isl_obj_none;
2024 static struct isl_obj obj_add(struct isl_ctx *ctx,
2025 struct isl_obj obj1, struct isl_obj obj2)
2027 if (obj1.type == isl_obj_set && obj2.type == isl_obj_union_set)
2028 obj1 = to_union(ctx, obj1);
2029 if (obj1.type == isl_obj_union_set && obj2.type == isl_obj_set)
2030 obj2 = to_union(ctx, obj2);
2031 if (obj1.type == isl_obj_map && obj2.type == isl_obj_union_map)
2032 obj1 = to_union(ctx, obj1);
2033 if (obj1.type == isl_obj_union_map && obj2.type == isl_obj_map)
2034 obj2 = to_union(ctx, obj2);
2035 if (obj1.type == isl_obj_pw_qpolynomial &&
2036 obj2.type == isl_obj_union_pw_qpolynomial)
2037 obj1 = to_union(ctx, obj1);
2038 if (obj1.type == isl_obj_union_pw_qpolynomial &&
2039 obj2.type == isl_obj_pw_qpolynomial)
2040 obj2 = to_union(ctx, obj2);
2041 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2042 obj2.type == isl_obj_union_pw_qpolynomial_fold)
2043 obj1 = to_union(ctx, obj1);
2044 if (obj1.type == isl_obj_union_pw_qpolynomial_fold &&
2045 obj2.type == isl_obj_pw_qpolynomial_fold)
2046 obj2 = to_union(ctx, obj2);
2047 isl_assert(ctx, obj1.type == obj2.type, goto error);
2048 if (obj1.type == isl_obj_map && !isl_map_has_equal_dim(obj1.v, obj2.v)) {
2049 obj1 = to_union(ctx, obj1);
2050 obj2 = to_union(ctx, obj2);
2052 if (obj1.type == isl_obj_set && !isl_set_has_equal_dim(obj1.v, obj2.v)) {
2053 obj1 = to_union(ctx, obj1);
2054 obj2 = to_union(ctx, obj2);
2056 if (obj1.type == isl_obj_pw_qpolynomial &&
2057 !isl_pw_qpolynomial_has_equal_dim(obj1.v, obj2.v)) {
2058 obj1 = to_union(ctx, obj1);
2059 obj2 = to_union(ctx, obj2);
2061 if (obj1.type == isl_obj_pw_qpolynomial_fold &&
2062 !isl_pw_qpolynomial_fold_has_equal_dim(obj1.v, obj2.v)) {
2063 obj1 = to_union(ctx, obj1);
2064 obj2 = to_union(ctx, obj2);
2066 obj1.v = obj1.type->add(obj1.v, obj2.v);
2069 obj1.type->free(obj1.v);
2070 obj2.type->free(obj2.v);
2071 obj1.type = isl_obj_none;
2076 static struct isl_obj obj_read(struct isl_stream *s, int nparam)
2078 isl_basic_map *bmap = NULL;
2079 struct isl_token *tok;
2080 struct vars *v = NULL;
2081 struct isl_obj obj = { isl_obj_set, NULL };
2083 tok = next_token(s);
2085 isl_stream_error(s, NULL, "unexpected EOF");
2088 if (tok->type == ISL_TOKEN_VALUE) {
2089 struct isl_token *tok2;
2090 struct isl_map *map;
2092 tok2 = isl_stream_next_token(s);
2093 if (!tok2 || tok2->type != ISL_TOKEN_VALUE ||
2094 isl_int_is_neg(tok2->u.v)) {
2096 isl_stream_push_token(s, tok2);
2097 obj.type = isl_obj_int;
2098 obj.v = isl_int_obj_alloc(s->ctx, tok->u.v);
2099 isl_token_free(tok);
2102 isl_stream_push_token(s, tok2);
2103 isl_stream_push_token(s, tok);
2104 map = map_read_polylib(s, nparam);
2107 if (isl_map_dim(map, isl_dim_in) > 0)
2108 obj.type = isl_obj_map;
2112 v = vars_new(s->ctx);
2114 isl_stream_push_token(s, tok);
2117 bmap = isl_basic_map_alloc(s->ctx, 0, 0, 0, 0, 0, 0);
2118 if (tok->type == '[') {
2119 isl_stream_push_token(s, tok);
2120 bmap = read_tuple(s, bmap, isl_dim_param, v);
2124 isl_assert(s->ctx, nparam == v->n, goto error);
2125 tok = isl_stream_next_token(s);
2126 if (!tok || tok->type != ISL_TOKEN_TO) {
2127 isl_stream_error(s, tok, "expecting '->'");
2129 isl_stream_push_token(s, tok);
2132 isl_token_free(tok);
2133 tok = isl_stream_next_token(s);
2134 } else if (nparam > 0)
2135 bmap = isl_basic_map_add(bmap, isl_dim_param, nparam);
2136 if (!tok || tok->type != '{') {
2137 isl_stream_error(s, tok, "expecting '{'");
2139 isl_stream_push_token(s, tok);
2142 isl_token_free(tok);
2144 tok = isl_stream_next_token(s);
2147 else if (tok->type == ISL_TOKEN_IDENT && !strcmp(tok->u.s, "Sym")) {
2148 isl_token_free(tok);
2149 if (isl_stream_eat(s, '='))
2151 bmap = read_tuple(s, bmap, isl_dim_param, v);
2155 isl_assert(s->ctx, nparam == v->n, goto error);
2156 } else if (tok->type == '}') {
2157 obj.type = isl_obj_union_set;
2158 obj.v = isl_union_set_empty(isl_basic_map_get_dim(bmap));
2159 isl_token_free(tok);
2162 isl_stream_push_token(s, tok);
2167 o = obj_read_body(s, isl_basic_map_copy(bmap), v);
2168 if (o.type == isl_obj_none || !o.v)
2173 obj = obj_add(s->ctx, obj, o);
2174 if (obj.type == isl_obj_none || !obj.v)
2177 tok = isl_stream_next_token(s);
2178 if (!tok || tok->type != ';')
2180 isl_token_free(tok);
2181 if (isl_stream_next_token_is(s, '}')) {
2182 tok = isl_stream_next_token(s);
2187 if (tok && tok->type == '}') {
2188 isl_token_free(tok);
2190 isl_stream_error(s, tok, "unexpected isl_token");
2192 isl_token_free(tok);
2197 isl_basic_map_free(bmap);
2201 isl_basic_map_free(bmap);
2202 obj.type->free(obj.v);
2209 struct isl_obj isl_stream_read_obj(struct isl_stream *s)
2211 return obj_read(s, -1);
2214 __isl_give isl_map *isl_stream_read_map(struct isl_stream *s, int nparam)
2218 obj = obj_read(s, nparam);
2220 isl_assert(s->ctx, obj.type == isl_obj_map ||
2221 obj.type == isl_obj_set, goto error);
2225 obj.type->free(obj.v);
2229 __isl_give isl_set *isl_stream_read_set(struct isl_stream *s, int nparam)
2233 obj = obj_read(s, nparam);
2235 isl_assert(s->ctx, obj.type == isl_obj_set, goto error);
2239 obj.type->free(obj.v);
2243 __isl_give isl_union_map *isl_stream_read_union_map(struct isl_stream *s)
2247 obj = obj_read(s, -1);
2248 if (obj.type == isl_obj_map) {
2249 obj.type = isl_obj_union_map;
2250 obj.v = isl_union_map_from_map(obj.v);
2252 if (obj.type == isl_obj_set) {
2253 obj.type = isl_obj_union_set;
2254 obj.v = isl_union_set_from_set(obj.v);
2257 isl_assert(s->ctx, obj.type == isl_obj_union_map ||
2258 obj.type == isl_obj_union_set, goto error);
2262 obj.type->free(obj.v);
2266 __isl_give isl_union_set *isl_stream_read_union_set(struct isl_stream *s)
2270 obj = obj_read(s, -1);
2271 if (obj.type == isl_obj_set) {
2272 obj.type = isl_obj_union_set;
2273 obj.v = isl_union_set_from_set(obj.v);
2276 isl_assert(s->ctx, obj.type == isl_obj_union_set, goto error);
2280 obj.type->free(obj.v);
2284 static struct isl_basic_map *basic_map_read(struct isl_stream *s, int nparam)
2287 struct isl_map *map;
2288 struct isl_basic_map *bmap;
2290 obj = obj_read(s, nparam);
2295 isl_assert(map->ctx, map->n <= 1, goto error);
2298 bmap = isl_basic_map_empty_like_map(map);
2300 bmap = isl_basic_map_copy(map->p[0]);
2310 __isl_give isl_basic_map *isl_basic_map_read_from_file(isl_ctx *ctx,
2311 FILE *input, int nparam)
2313 struct isl_basic_map *bmap;
2314 struct isl_stream *s = isl_stream_new_file(ctx, input);
2317 bmap = basic_map_read(s, nparam);
2322 __isl_give isl_basic_set *isl_basic_set_read_from_file(isl_ctx *ctx,
2323 FILE *input, int nparam)
2325 struct isl_basic_map *bmap;
2326 bmap = isl_basic_map_read_from_file(ctx, input, nparam);
2329 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2330 return (struct isl_basic_set *)bmap;
2332 isl_basic_map_free(bmap);
2336 struct isl_basic_map *isl_basic_map_read_from_str(struct isl_ctx *ctx,
2337 const char *str, int nparam)
2339 struct isl_basic_map *bmap;
2340 struct isl_stream *s = isl_stream_new_str(ctx, str);
2343 bmap = basic_map_read(s, nparam);
2348 struct isl_basic_set *isl_basic_set_read_from_str(struct isl_ctx *ctx,
2349 const char *str, int nparam)
2351 struct isl_basic_map *bmap;
2352 bmap = isl_basic_map_read_from_str(ctx, str, nparam);
2355 isl_assert(ctx, isl_basic_map_n_in(bmap) == 0, goto error);
2356 return (struct isl_basic_set *)bmap;
2358 isl_basic_map_free(bmap);
2362 __isl_give isl_map *isl_map_read_from_file(struct isl_ctx *ctx,
2363 FILE *input, int nparam)
2365 struct isl_map *map;
2366 struct isl_stream *s = isl_stream_new_file(ctx, input);
2369 map = isl_stream_read_map(s, nparam);
2374 __isl_give isl_map *isl_map_read_from_str(struct isl_ctx *ctx,
2375 const char *str, int nparam)
2377 struct isl_map *map;
2378 struct isl_stream *s = isl_stream_new_str(ctx, str);
2381 map = isl_stream_read_map(s, nparam);
2386 __isl_give isl_set *isl_set_read_from_file(struct isl_ctx *ctx,
2387 FILE *input, int nparam)
2389 struct isl_map *map;
2390 map = isl_map_read_from_file(ctx, input, nparam);
2393 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2394 return (struct isl_set *)map;
2400 struct isl_set *isl_set_read_from_str(struct isl_ctx *ctx,
2401 const char *str, int nparam)
2403 struct isl_map *map;
2404 map = isl_map_read_from_str(ctx, str, nparam);
2407 isl_assert(ctx, isl_map_n_in(map) == 0, goto error);
2408 return (struct isl_set *)map;
2414 __isl_give isl_union_map *isl_union_map_read_from_file(isl_ctx *ctx,
2417 isl_union_map *umap;
2418 struct isl_stream *s = isl_stream_new_file(ctx, input);
2421 umap = isl_stream_read_union_map(s);
2426 __isl_give isl_union_map *isl_union_map_read_from_str(struct isl_ctx *ctx,
2429 isl_union_map *umap;
2430 struct isl_stream *s = isl_stream_new_str(ctx, str);
2433 umap = isl_stream_read_union_map(s);
2438 __isl_give isl_union_set *isl_union_set_read_from_file(isl_ctx *ctx,
2441 isl_union_set *uset;
2442 struct isl_stream *s = isl_stream_new_file(ctx, input);
2445 uset = isl_stream_read_union_set(s);
2450 __isl_give isl_union_set *isl_union_set_read_from_str(struct isl_ctx *ctx,
2453 isl_union_set *uset;
2454 struct isl_stream *s = isl_stream_new_str(ctx, str);
2457 uset = isl_stream_read_union_set(s);
2462 static __isl_give isl_vec *isl_vec_read_polylib(struct isl_stream *s)
2464 struct isl_vec *vec = NULL;
2465 struct isl_token *tok;
2469 tok = isl_stream_next_token(s);
2470 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2471 isl_stream_error(s, tok, "expecting vector length");
2475 size = isl_int_get_si(tok->u.v);
2476 isl_token_free(tok);
2478 vec = isl_vec_alloc(s->ctx, size);
2480 for (j = 0; j < size; ++j) {
2481 tok = isl_stream_next_token(s);
2482 if (!tok || tok->type != ISL_TOKEN_VALUE) {
2483 isl_stream_error(s, tok, "expecting constant value");
2486 isl_int_set(vec->el[j], tok->u.v);
2487 isl_token_free(tok);
2492 isl_token_free(tok);
2497 static __isl_give isl_vec *vec_read(struct isl_stream *s)
2499 return isl_vec_read_polylib(s);
2502 __isl_give isl_vec *isl_vec_read_from_file(isl_ctx *ctx, FILE *input)
2505 struct isl_stream *s = isl_stream_new_file(ctx, input);
2513 __isl_give isl_pw_qpolynomial *isl_stream_read_pw_qpolynomial(
2514 struct isl_stream *s)
2518 obj = obj_read(s, -1);
2520 isl_assert(s->ctx, obj.type == isl_obj_pw_qpolynomial,
2525 obj.type->free(obj.v);
2529 __isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_read_from_str(isl_ctx *ctx,
2532 isl_pw_qpolynomial *pwqp;
2533 struct isl_stream *s = isl_stream_new_str(ctx, str);
2536 pwqp = isl_stream_read_pw_qpolynomial(s);