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/*=============================================================================
Copyright (c) 2001-2014 Joel de Guzman
Copyright (c) 2013 Agustin Berge
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)
==============================================================================*/
#if !defined(BOOST_SPIRIT_X3_SFINAE_MAY_20_2013_0840AM)
#define BOOST_SPIRIT_X3_SFINAE_MAY_20_2013_0840AM
namespace boost { namespace spirit { namespace x3
{
template <typename Expr, typename T = void>
struct disable_if_substitution_failure
{
typedef T type;
};
template <typename Expr, typename T>
struct lazy_disable_if_substitution_failure
{
typedef typename T::type type;
};
}}}
#endif
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