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Contents
// Copyright Daniel Wallin, David Abrahams 2005.
// 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)
#ifndef BOOST_PARAMETER_AUX_YESNO_HPP
#define BOOST_PARAMETER_AUX_YESNO_HPP
namespace boost { namespace parameter { namespace aux {
// types used with the "sizeof trick" to capture the results of
// overload resolution at compile-time.
typedef char yes_tag;
typedef char (&no_tag)[2];
}}} // namespace boost::parameter::aux
#include <boost/mpl/bool.hpp>
namespace boost { namespace parameter { namespace aux {
// mpl::true_ and mpl::false_ are not distinguishable by sizeof(),
// so we pass them through these functions to get a type that is.
::boost::parameter::aux::yes_tag to_yesno(::boost::mpl::true_);
::boost::parameter::aux::no_tag to_yesno(::boost::mpl::false_);
}}} // namespace boost::parameter::aux
#include <boost/parameter/config.hpp>
#if defined(BOOST_PARAMETER_CAN_USE_MP11)
#include <boost/mp11/integral.hpp>
namespace boost { namespace parameter { namespace aux {
// mp11::mp_true and mp11::mp_false are not distinguishable by sizeof(),
// so we pass them through these functions to get a type that is.
::boost::parameter::aux::yes_tag to_yesno(::boost::mp11::mp_true);
::boost::parameter::aux::no_tag to_yesno(::boost::mp11::mp_false);
}}} // namespace boost::parameter::aux
#endif // BOOST_PARAMETER_CAN_USE_MP11
#endif // include guard
Version data entries
14 entries across 14 versions & 1 rubygems