/* Test refine_with_constraint() and refine_with_constraints()..
   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
   Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)

This file is part of the Parma Polyhedra Library (PPL).

The PPL is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

The PPL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.

For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */

#include "ppl_test.hh"

using namespace Parma_Polyhedra_Library::IO_Operators;
#define REVERSED_TEST
#include "partially_reduced_product_test.hh"

typedef NNC_Polyhedron DOMAIN1;
typedef Grid DOMAIN2;
typedef Domain_Product<DOMAIN1x, DOMAIN2x>::Constraints_Product Product;

namespace {

// Refine with an equality constraint.
bool
test01() {
  Variable A(0);

  Product prp(1);
  prp.refine_with_constraint(A == 0);

  DOMAIN2 gr(1);
  gr.refine_with_constraint(A == 0);
  Product known_result(gr);

  bool ok = (prp == known_result);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok && prp.OK();
}

// Refine with a proper constraint.
bool
test02() {
  Variable A(0);

  Product prp(1);
  prp.refine_with_constraint(A >= 4);

  DOMAIN1 ph(1);
  ph.refine_with_constraint(A >= 4);
  Product known_result(ph);

  bool ok = (prp == known_result);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok && prp.OK();
}

// Refine with constraints.
bool
test03() {
  Variable A(0);
  Variable B(1);

  Constraint_System cs;
  cs.insert(2*A <= 1);
  cs.insert(A + B >= 1);

  Product prp(2);
  prp.refine_with_constraints(cs);

  DOMAIN1 ph(2);
  ph.refine_with_constraints(cs);
  Product known_result(ph);

  bool ok = (prp == known_result);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok && prp.OK();
}

// Universe product with 0 dimensions.
bool
test04() {

  Product prp(0);
  prp.refine_with_constraint(Linear_Expression(0) >= 1);

  Product known_result(0, EMPTY);

  bool ok = (prp == known_result);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok && prp.OK();
}

// Empty product with 0 dimensions.
bool
test05() {

  Product prp(0, EMPTY);
  prp.refine_with_constraint(Linear_Expression(0) == 0);

  Product known_result(0, EMPTY);

  bool ok = (prp == known_result);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok && prp.OK();
}

// refine_with_constraints
bool
test06() {

  Variable A(0);
  Variable B(1);
  Variable C(2);

  Constraint_System cs;
  cs.insert(A >= 0);
  cs.insert(B == 0);

  Product prp(2);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  prp.refine_with_constraints(cs);

  Product known_prp(2);
  known_prp.refine_with_constraint(A >= 0);
  known_prp.refine_with_constraint(B == 0);

  bool ok = (prp == known_prp);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok;
}

// refine_with_constraints
bool
test07() {
  Variable A(0);
  Variable B(1);

  Constraint_System cs;
  cs.insert(A + B <= 0);

  Product prp(2);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  prp.refine_with_constraints(cs);

  Product known_prp(2);
  known_prp.refine_with_constraint(A + B <= 0);

  bool ok = (prp == known_prp);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok;
}

// refine_with_constraints
bool
test08() {
  Variable A(0);
  Variable B(1);

  Constraint_System cs;
  cs.insert(A >= 0);
  cs.insert(A + B == 0);

  Product prp(2);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  prp.refine_with_constraints(cs);
  bool ok = !prp.is_empty();

  Product known_prp(2);
  known_prp.refine_with_constraint(A >= 0);
  known_prp.refine_with_constraint(A + B == 0);

  ok = ok && (prp == known_prp);

  return ok;
}

// refine_with_constraints
bool
test09() {
  Variable A(0);
  Variable B(1);

  Constraint_System cs;
  cs.insert(B >= 0);
  cs.insert(A - B == 0);

  Product prp(2);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  prp.refine_with_constraints(cs);
  bool ok = !prp.is_empty();

  Product known_prp(2);
  known_prp.refine_with_constraint(B >= 0);
  known_prp.refine_with_constraint(A - B == 0);

  ok = ok && (prp == known_prp);

  print_constraints(prp, "*** prp constraints ***");
  print_congruences(prp, "*** prp congruences ***");

  return ok;
}

// refine_with_constraints() and refine_with_congruences()
bool
test10() {
  Variable A(0);
  Variable B(1);

  Product prp(2);
  Constraint_System cs;
  cs.insert(A >= 1);
  cs.insert(A <= 6);
  prp.refine_with_constraints(cs);

  Product known_prp(prp);

  Constraint_System cs1;
  cs1.insert(A > 2);
  cs1.insert(B >= 2);
  Congruence_System cgs1;
  cgs1.insert((B %= 2) / 4);
  cgs1.insert((A + B %= 6) / 0);
  prp.refine_with_constraint(A > 2);
  prp.refine_with_constraint(B >= 2);
  prp.refine_with_congruence((B %= 2) / 4);
  prp.refine_with_congruence((A + B %= 6) / 0);

  bool ok = prp.OK();

  known_prp.refine_with_constraint(A > 2);
  known_prp.refine_with_constraint(B >= 2);
  known_prp.refine_with_congruence((B %= 2) / 4);
  known_prp.refine_with_congruence((A + B %= 6) / 0);

  ok = ok && prp == known_prp;

  print_congruences(prp, "*** after ok check: prp congruences ***");
  print_constraints(prp, "*** after ok check: prp constraints ***");

  return ok;
}

// refine_with_constraints() and refine_with_congruences()
bool
test11() {
  Variable A(0);
  Variable B(1);

  Product prp(2);
  Constraint_System cs;
  cs.insert(A >= 1);
  cs.insert(A <= 6);
  prp.refine_with_constraints(cs);

  Product known_prp(prp);

  Constraint_System cs1;
  cs1.insert(A > 2);
  cs1.insert(B >= 2);
  Congruence_System cgs1;
  cgs1.insert((B %= 2) / 4);
  cgs1.insert((A + B %= 6) / 0);
  prp.refine_with_constraints(cs1);
  prp.refine_with_congruences(cgs1);

  bool ok = prp.OK();

  known_prp.refine_with_constraint(A > 2);
  known_prp.refine_with_constraint(B >= 2);
  known_prp.refine_with_congruence((B %= 2) / 4);
  known_prp.refine_with_congruence((A + B %= 6) / 0);

  ok = ok && prp == known_prp;

  print_congruences(prp, "*** after ok check: prp congruences ***");
  print_constraints(prp, "*** after ok check: prp constraints ***");

  return ok;
}

} // namespace

BEGIN_MAIN
  DO_TEST(test01);
  DO_TEST(test02);
  DO_TEST(test03);
  DO_TEST(test04);
  DO_TEST(test05);
  DO_TEST(test06);
  DO_TEST(test07);
  DO_TEST(test08);
  DO_TEST(test09);
  DO_TEST(test10);
  DO_TEST(test11);
END_MAIN
