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// Copyright (c) 2014-2017 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAOCPP_PEGTL_INCLUDE_NOTHING_HPP
#define TAOCPP_PEGTL_INCLUDE_NOTHING_HPP
#include <type_traits>
#include "config.hpp"
namespace tao
{
namespace TAOCPP_PEGTL_NAMESPACE
{
template< typename Rule >
struct nothing
{
};
template< template< typename... > class Action, typename Rule >
using is_nothing = std::is_base_of< nothing< Rule >, Action< Rule > >;
} // namespace TAOCPP_PEGTL_NAMESPACE
} // namespace tao
#endif
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