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/********************* */
/*! \file regexp_operation_black.cpp
** \verbatim
** Top contributors (to current version):
** Aina Niemetz, Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Unit tests for symbolic regular expression operations
**
** Unit tests for symbolic regular expression operations.
**/
#include <iostream>
#include <memory>
#include <vector>
#include "api/cvc4cpp.h"
#include "expr/node.h"
#include "expr/node_manager.h"
#include "smt/smt_engine_scope.h"
#include "test_smt.h"
#include "theory/rewriter.h"
#include "theory/strings/regexp_operation.h"
#include "theory/strings/skolem_cache.h"
namespace CVC4 {
using namespace kind;
using namespace theory;
using namespace theory::strings;
namespace test {
class TestTheoryBlackRegexpOperation : public TestSmt
{
protected:
void SetUp() override
{
TestSmt::SetUp();
d_skolemCache.reset(new SkolemCache());
d_regExpOpr.reset(new RegExpOpr(d_skolemCache.get()));
}
void includes(Node r1, Node r2)
{
r1 = Rewriter::rewrite(r1);
r2 = Rewriter::rewrite(r2);
std::cout << r1 << " includes " << r2 << std::endl;
ASSERT_TRUE(d_regExpOpr->regExpIncludes(r1, r2));
}
void doesNotInclude(Node r1, Node r2)
{
r1 = Rewriter::rewrite(r1);
r2 = Rewriter::rewrite(r2);
std::cout << r1 << " does not include " << r2 << std::endl;
ASSERT_FALSE(d_regExpOpr->regExpIncludes(r1, r2));
}
std::unique_ptr<SkolemCache> d_skolemCache;
std::unique_ptr<RegExpOpr> d_regExpOpr;
};
TEST_F(TestTheoryBlackRegexpOperation, basic)
{
Node sigma = d_nodeManager->mkNode(REGEXP_SIGMA, std::vector<Node>{});
Node sigmaStar = d_nodeManager->mkNode(REGEXP_STAR, sigma);
Node a = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("a")));
Node c = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("c")));
Node abc = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("abc")));
Node sigma3 = d_nodeManager->mkNode(REGEXP_CONCAT, sigma, sigma, sigma);
Node asc = d_nodeManager->mkNode(REGEXP_CONCAT, a, sigma, c);
Node asw = d_nodeManager->mkNode(REGEXP_CONCAT, a, sigma, sigmaStar);
includes(sigma3, abc);
doesNotInclude(abc, sigma3);
includes(sigma3, asc);
doesNotInclude(asc, sigma3);
includes(asc, abc);
doesNotInclude(abc, asc);
includes(asw, asc);
doesNotInclude(asc, asw);
}
TEST_F(TestTheoryBlackRegexpOperation, star_wildcards)
{
Node sigma = d_nodeManager->mkNode(REGEXP_SIGMA, std::vector<Node>{});
Node sigmaStar = d_nodeManager->mkNode(REGEXP_STAR, sigma);
Node a = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("a")));
Node c = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("c")));
Node abc = d_nodeManager->mkNode(STRING_TO_REGEXP,
d_nodeManager->mkConst(String("abc")));
Node _abc_ = d_nodeManager->mkNode(REGEXP_CONCAT, sigmaStar, abc, sigmaStar);
Node _asc_ =
d_nodeManager->mkNode(REGEXP_CONCAT, sigmaStar, a, sigma, c, sigmaStar);
Node _sc_ = Rewriter::rewrite(
d_nodeManager->mkNode(REGEXP_CONCAT, sigmaStar, sigma, c, sigmaStar));
Node _as_ = Rewriter::rewrite(
d_nodeManager->mkNode(REGEXP_CONCAT, sigmaStar, a, sigma, sigmaStar));
Node _assc_ = d_nodeManager->mkNode(
REGEXP_CONCAT,
std::vector<Node>{sigmaStar, a, sigma, sigma, c, sigmaStar});
Node _csa_ =
d_nodeManager->mkNode(REGEXP_CONCAT, sigmaStar, c, sigma, a, sigmaStar);
Node _c_a_ = d_nodeManager->mkNode(
REGEXP_CONCAT, sigmaStar, c, sigmaStar, a, sigmaStar);
Node _s_s_ = Rewriter::rewrite(d_nodeManager->mkNode(
REGEXP_CONCAT, sigmaStar, sigma, sigmaStar, sigma, sigmaStar));
Node _a_abc_ = Rewriter::rewrite(d_nodeManager->mkNode(
REGEXP_CONCAT, sigmaStar, a, sigmaStar, abc, sigmaStar));
includes(_asc_, _abc_);
doesNotInclude(_abc_, _asc_);
doesNotInclude(_csa_, _abc_);
doesNotInclude(_assc_, _asc_);
doesNotInclude(_asc_, _assc_);
includes(_sc_, abc);
includes(_sc_, _abc_);
includes(_sc_, _asc_);
includes(_sc_, _assc_);
doesNotInclude(_sc_, _csa_);
includes(_as_, abc);
includes(_as_, _abc_);
includes(_as_, _asc_);
includes(_as_, _assc_);
doesNotInclude(_sc_, _csa_);
includes(_s_s_, _c_a_);
doesNotInclude(_c_a_, _s_s_);
includes(_abc_, _a_abc_);
doesNotInclude(_a_abc_, _abc_);
}
} // namespace test
} // namespace CVC4
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