30 lines
679 B
C++
30 lines
679 B
C++
#ifndef BOOST_METAPARSE_V1_UTIL_UNLESS_ERROR_HPP
|
|
#define BOOST_METAPARSE_V1_UTIL_UNLESS_ERROR_HPP
|
|
|
|
// Copyright Abel Sinkovics (abel@sinkovics.hu) 2011.
|
|
// 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)
|
|
|
|
#include <boost/metaparse/v1/is_error.hpp>
|
|
|
|
#include <boost/mpl/equal_to.hpp>
|
|
#include <boost/mpl/eval_if.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace metaparse
|
|
{
|
|
namespace v1
|
|
{
|
|
template <class T, class NotErrorCase>
|
|
struct unless_error :
|
|
boost::mpl::eval_if<typename is_error<T>::type, T, NotErrorCase>
|
|
{};
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|