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- // (C) Copyright Gennadiy Rozental 2001.
- // 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)
- // See http://www.boost.org/libs/test for the library home page.
- //
- /// @file
- /// Defines helper routines and types for merging monomorphic samples
- // ***************************************************************************
- #ifndef BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
- #define BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
- // Boost.Test
- #include <boost/test/data/config.hpp>
- #include <boost/test/data/index_sequence.hpp>
- #include <boost/test/data/monomorphic/fwd.hpp>
- #include <boost/test/detail/suppress_warnings.hpp>
- namespace boost {
- namespace unit_test {
- namespace data {
- namespace monomorphic {
- //____________________________________________________________________________//
- namespace ds_detail {
- template <class T>
- struct is_tuple : std::false_type {};
- template <class ...T>
- struct is_tuple<std::tuple<T...>> : std::true_type {};
- template <class T>
- struct is_tuple<T&&> : is_tuple<typename std::decay<T>::type> {};
- template <class T>
- struct is_tuple<T&> : is_tuple<typename std::decay<T>::type> {};
- template<typename T>
- inline auto as_tuple_impl_xvalues( T const & arg, std::false_type /* is_rvalue_ref */ )
- -> decltype(std::tuple<T const&>(arg)) {
- //return std::tuple<T const&>(arg);
- return std::forward_as_tuple(arg);
- }
- template<typename T>
- inline auto as_tuple_impl_xvalues( T && arg, std::true_type /* is_rvalue_ref */ )
- -> decltype(std::make_tuple(std::forward<T>(arg))) {
- return std::make_tuple(std::forward<T>(arg));
- }
- template<typename T>
- inline auto as_tuple_impl( T && arg, std::false_type /* is_tuple = nullptr */ )
- -> decltype(as_tuple_impl_xvalues(std::forward<T>(arg),
- typename std::is_rvalue_reference<T&&>::type())) {
- return as_tuple_impl_xvalues(std::forward<T>(arg),
- typename std::is_rvalue_reference<T&&>::type());
- }
- //____________________________________________________________________________//
- template<typename T>
- inline T &&
- as_tuple_impl(T && arg, std::true_type /* is_tuple */ ) {
- return std::forward<T>(arg);
- }
- template<typename T>
- inline auto as_tuple( T && arg )
- -> decltype( as_tuple_impl(std::forward<T>(arg),
- typename ds_detail::is_tuple<T>::type()) ) {
- return as_tuple_impl(std::forward<T>(arg),
- typename ds_detail::is_tuple<T>::type());
- }
- //____________________________________________________________________________//
- } // namespace ds_detail
- template<typename T1, typename T2>
- inline auto
- sample_merge( T1 && a1, T2 && a2 )
- -> decltype( std::tuple_cat(ds_detail::as_tuple(std::forward<T1>(a1)),
- ds_detail::as_tuple(std::forward<T2>(a2)) ) ) {
- return std::tuple_cat(ds_detail::as_tuple(std::forward<T1>(a1)),
- ds_detail::as_tuple(std::forward<T2>(a2)));
- }
- } // namespace monomorphic
- } // namespace data
- } // namespace unit_test
- } // namespace boost
- #include <boost/test/detail/enable_warnings.hpp>
- #endif // BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
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