PrusaSlicer-NonPlainar/xs/include/boost/test/utils/trivial_singleton.hpp

75 lines
2.3 KiB
C++

// (C) Copyright Gennadiy Rozental 2005-2008.
// 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)
// See http://www.boost.org/libs/test for the library home page.
//
// File : $RCSfile$
//
// Version : $Revision: 49312 $
//
// Description : simple helpers for creating cusom output manipulators
// ***************************************************************************
#ifndef BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER
#define BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER
#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/noncopyable.hpp>
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
namespace unit_test {
// ************************************************************************** //
// ************** singleton ************** //
// ************************************************************************** //
template<typename Derived>
class singleton : private boost::noncopyable {
public:
static Derived& instance() { static Derived the_inst; return the_inst; }
protected:
singleton() {}
~singleton() {}
};
} // namespace unit_test
#define BOOST_TEST_SINGLETON_CONS( type ) \
friend class boost::unit_test::singleton<type>; \
type() {} \
/**/
#if BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
#define BOOST_TEST_SINGLETON_INST( inst ) \
template class unit_test::singleton< BOOST_JOIN( inst, _t ) > ; \
namespace { BOOST_JOIN( inst, _t)& inst = BOOST_JOIN( inst, _t)::instance(); }
#elif defined(__APPLE_CC__) && defined(__GNUC__) && __GNUC__ < 4
#define BOOST_TEST_SINGLETON_INST( inst ) \
static BOOST_JOIN( inst, _t)& inst = BOOST_JOIN (inst, _t)::instance();
#else
#define BOOST_TEST_SINGLETON_INST( inst ) \
namespace { BOOST_JOIN( inst, _t)& inst = BOOST_JOIN( inst, _t)::instance(); }
#endif
} // namespace boost
//____________________________________________________________________________//
#include <boost/test/detail/enable_warnings.hpp>
#endif // BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER