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// Author(s): Wieger Wesselink
// Copyright: see the accompanying file COPYING or copy at
// https://svn.win.tue.nl/trac/MCRL2/browser/trunk/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
/// \file template_test.cpp
/// \brief Template tests.
#include <iostream>
#include <boost/test/minimal.hpp>
template <typename Derived>
class data_traverser
{};
template <typename Derived, template <typename> class Traverser = data_traverser>
class lps_traverser: public Traverser<Derived>
{};
template <template <typename> class Traverser = data_traverser>
struct find_helper: public Traverser<find_helper<Traverser> >
{
void print() const
{
std::cout << "hello, world!" << std::endl;
}
};
template <template <typename> class Traverser>
find_helper<Traverser> make_find_helper()
{
return find_helper<Traverser>();
}
template <template <typename> class Traverser>
void f1()
{
std::cout << "hello, world!" << std::endl;
}
template <template <typename, typename> class Traverser>
void f2()
{
std::cout << "hello, world!" << std::endl;
}
//-------------------------------------------------------------//
template <typename Derived>
class lps_traverser2: public data_traverser<Derived>
{};
int test_main(int /*argc*/, char** /*argv[]*/)
{
make_find_helper<data_traverser>().print();
f1<data_traverser>();
//--- The intended usage pattern does not compile ---//
// make_find_helper<lps_traverser>().print();
//f1<lps_traverser>();
//--- This also doesn't compile ---//
//f2<lps_traverser>();
//--- But this does compile ---//
make_find_helper<lps_traverser2>().print();
f1<lps_traverser2>();
return 0;
}
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