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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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