/*=============================================================================
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Copyright (c) 2001-2014 Joel de Guzman
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Copyright (c) 2013 Agustin Berge
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_SPIRIT_X3_SFINAE_MAY_20_2013_0840AM)
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#define BOOST_SPIRIT_X3_SFINAE_MAY_20_2013_0840AM
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namespace boost { namespace spirit { namespace x3
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{
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template <typename Expr, typename T = void>
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struct disable_if_substitution_failure
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{
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typedef T type;
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};
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template <typename Expr, typename T>
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struct lazy_disable_if_substitution_failure
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{
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typedef typename T::type type;
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};
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}}}
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#endif
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