explicit_operator_bool.hpp

Go to the documentation of this file.

#ifndef SILICIUM_EXPLICIT_OPERATOR_BOOL_HPP
#define SILICIUM_EXPLICIT_OPERATOR_BOOL_HPP

#include <boost/version.hpp>
#if BOOST_VERSION >= 105500
#   include <boost/utility/explicit_operator_bool.hpp>
#endif

#ifdef BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT
//the noexcept version was added in 1.56 http://www.boost.org/doc/libs/1_57_0/libs/core/doc/html/core/explicit_operator_bool.html
#   define SILICIUM_EXPLICIT_OPERATOR_BOOL() BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()

#elif defined(BOOST_EXPLICIT_OPERATOR_BOOL)
#   define SILICIUM_EXPLICIT_OPERATOR_BOOL() BOOST_EXPLICIT_OPERATOR_BOOL()

#else
#   define SILICIUM_EXPLICIT_OPERATOR_BOOL() \
    operator bool() const BOOST_NOEXCEPT \
    { \
        return !!(*this); \
    }
#endif

#endif