/usr/include/boost/phoenix/core
Edit: /usr/include/boost/phoenix/core/is_value.hpp (1619B)
/*==============================================================================
Copyright (c) 2005-2010 Joel de Guzman
Copyright (c) 2015 John Fletcher
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_PHOENIX_CORE_IS_VALUE_HPP
#define BOOST_PHOENIX_CORE_IS_VALUE_HPP
#include
// Copied from is_actor.hpp
// Note to Thomas and any future maintainer: please make this as
// lightweight as possible (as it is right now).
namespace boost { namespace phoenix
{
///////////////////////////////////////////////////////////////////////////////
//
// is_value
//
// Tests if T is a value. Evaluates to mpl::true_ or mpl::false_
//
///////////////////////////////////////////////////////////////////////////////
namespace expression {
template
struct value;
}
template
struct is_value
: mpl::false_
{};
template
struct is_value
: is_value
{};
template
struct is_value
: is_value
{};
// This does not seem to work.
// There is an alternative in value.hpp which does work.
template
struct is_value< expression::value >
: mpl::true_
{};
template
bool is_val(T const & /* t */)
{
return is_value::value;
}
}}
#endif