| /*============================================================================= |
| Copyright (c) 2001-2014 Joel de Guzman |
| |
| 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_TUPLE_TRAITS_JANUARY_2012_1132PM) |
| #define BOOST_SPIRIT_X3_TUPLE_TRAITS_JANUARY_2012_1132PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/fusion/include/is_sequence.hpp> |
| #include <boost/fusion/include/size.hpp> |
| #include <boost/mpl/bool.hpp> |
| #include <boost/mpl/and.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 { namespace traits |
| { |
| template <typename A, typename B> |
| struct has_same_size |
| : mpl::bool_<( |
| fusion::result_of::size<A>::value == |
| fusion::result_of::size<B>::value |
| )> |
| {}; |
| |
| template <typename T, std::size_t N> |
| struct has_size |
| : mpl::bool_<(fusion::result_of::size<T>::value == N)> |
| {}; |
| |
| template <typename A, typename B> |
| struct is_same_size_sequence |
| : mpl::and_< |
| fusion::traits::is_sequence<A> |
| , fusion::traits::is_sequence<B> |
| , has_same_size<A, B> |
| > |
| {}; |
| |
| template <typename Seq> |
| struct is_size_one_sequence |
| : mpl::and_< |
| fusion::traits::is_sequence<Seq> |
| , has_size<Seq, 1> |
| > |
| {}; |
| }}}} |
| |
| #endif |
