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/********************* */
/*! \file regexp_operation_black.h
** \verbatim
** Top contributors (to current version):
** Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2019 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 "expr/node.h"
#include "expr/node_manager.h"
#include "smt/smt_engine.h"
#include "smt/smt_engine_scope.h"
#include "theory/strings/regexp_operation.h"
#include <cxxtest/TestSuite.h>
#include <iostream>
#include <memory>
#include <vector>
using namespace CVC4;
using namespace CVC4::kind;
using namespace CVC4::smt;
using namespace CVC4::theory;
using namespace CVC4::theory::strings;
class RegexpOperationBlack : public CxxTest::TestSuite
{
public:
RegexpOperationBlack() {}
void setUp() override
{
Options opts;
opts.setOutputLanguage(language::output::LANG_SMTLIB_V2);
d_em = new ExprManager(opts);
d_smt = new SmtEngine(d_em);
d_scope = new SmtScope(d_smt);
d_regExpOpr = new RegExpOpr();
// Ensure that the SMT engine is fully initialized (required for the
// rewriter)
d_smt->push();
d_nm = NodeManager::currentNM();
}
void tearDown() override
{
delete d_regExpOpr;
delete d_scope;
delete d_smt;
delete d_em;
}
void includes(Node r1, Node r2)
{
r1 = Rewriter::rewrite(r1);
r2 = Rewriter::rewrite(r2);
std::cout << r1 << " includes " << r2 << std::endl;
TS_ASSERT(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;
TS_ASSERT(!d_regExpOpr->regExpIncludes(r1, r2));
}
void testBasic()
{
Node sigma = d_nm->mkNode(REGEXP_SIGMA, std::vector<Node>{});
Node sigmaStar = d_nm->mkNode(REGEXP_STAR, sigma);
Node a = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("a")));
Node c = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("c")));
Node abc = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("abc")));
Node sigma3 = d_nm->mkNode(REGEXP_CONCAT, sigma, sigma, sigma);
Node asc = d_nm->mkNode(REGEXP_CONCAT, a, sigma, c);
Node asw = d_nm->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);
}
void testStarWildcards()
{
Node sigma = d_nm->mkNode(REGEXP_SIGMA, std::vector<Node>{});
Node sigmaStar = d_nm->mkNode(REGEXP_STAR, sigma);
Node a = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("a")));
Node c = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("c")));
Node abc = d_nm->mkNode(STRING_TO_REGEXP, d_nm->mkConst(String("abc")));
Node _abc_ = d_nm->mkNode(REGEXP_CONCAT, sigmaStar, abc, sigmaStar);
Node _asc_ = d_nm->mkNode(REGEXP_CONCAT, sigmaStar, a, sigma, c, sigmaStar);
Node _sc_ = Rewriter::rewrite(
d_nm->mkNode(REGEXP_CONCAT, sigmaStar, sigma, c, sigmaStar));
Node _as_ = Rewriter::rewrite(
d_nm->mkNode(REGEXP_CONCAT, sigmaStar, a, sigma, sigmaStar));
Node _assc_ = d_nm->mkNode(
REGEXP_CONCAT,
std::vector<Node>{sigmaStar, a, sigma, sigma, c, sigmaStar});
Node _csa_ = d_nm->mkNode(REGEXP_CONCAT, sigmaStar, c, sigma, a, sigmaStar);
Node _c_a_ =
d_nm->mkNode(REGEXP_CONCAT, sigmaStar, c, sigmaStar, a, sigmaStar);
Node _s_s_ = Rewriter::rewrite(d_nm->mkNode(
REGEXP_CONCAT, sigmaStar, sigma, sigmaStar, sigma, sigmaStar));
Node _a_abc_ = Rewriter::rewrite(
d_nm->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_);
}
private:
ExprManager* d_em;
SmtEngine* d_smt;
SmtScope* d_scope;
RegExpOpr* d_regExpOpr;
NodeManager* d_nm;
};
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