104 lines
3.2 KiB
C++
Executable File
104 lines
3.2 KiB
C++
Executable File
// (C) Copyright Gennadiy Rozental 2001.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/test for the library home page.
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//
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/// @file
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/// Defines helper routines and types for merging monomorphic samples
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// ***************************************************************************
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#ifndef BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
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#define BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
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// Boost.Test
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#include <boost/test/data/config.hpp>
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#include <boost/test/data/index_sequence.hpp>
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#include <boost/test/data/monomorphic/fwd.hpp>
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#include <boost/test/detail/suppress_warnings.hpp>
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namespace boost {
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namespace unit_test {
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namespace data {
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namespace monomorphic {
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//____________________________________________________________________________//
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namespace ds_detail {
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template <class T>
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struct is_tuple : std::false_type {};
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template <class ...T>
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struct is_tuple<std::tuple<T...>> : std::true_type {};
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template <class T>
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struct is_tuple<T&&> : is_tuple<typename std::decay<T>::type> {};
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template <class T>
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struct is_tuple<T&> : is_tuple<typename std::decay<T>::type> {};
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template<typename T>
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inline auto as_tuple_impl_xvalues( T const & arg, std::false_type /* is_rvalue_ref */ )
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-> decltype(std::tuple<T const&>(arg)) {
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//return std::tuple<T const&>(arg);
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return std::forward_as_tuple(arg);
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}
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template<typename T>
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inline auto as_tuple_impl_xvalues( T && arg, std::true_type /* is_rvalue_ref */ )
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-> decltype(std::make_tuple(std::forward<T>(arg))) {
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return std::make_tuple(std::forward<T>(arg));
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}
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template<typename T>
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inline auto as_tuple_impl( T && arg, std::false_type /* is_tuple = nullptr */ )
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-> decltype(as_tuple_impl_xvalues(std::forward<T>(arg),
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typename std::is_rvalue_reference<T&&>::type())) {
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return as_tuple_impl_xvalues(std::forward<T>(arg),
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typename std::is_rvalue_reference<T&&>::type());
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}
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//____________________________________________________________________________//
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template<typename T>
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inline T &&
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as_tuple_impl(T && arg, std::true_type /* is_tuple */ ) {
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return std::forward<T>(arg);
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}
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template<typename T>
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inline auto as_tuple( T && arg )
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-> decltype( as_tuple_impl(std::forward<T>(arg),
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typename ds_detail::is_tuple<T>::type()) ) {
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return as_tuple_impl(std::forward<T>(arg),
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typename ds_detail::is_tuple<T>::type());
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}
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//____________________________________________________________________________//
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} // namespace ds_detail
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template<typename T1, typename T2>
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inline auto
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sample_merge( T1 && a1, T2 && a2 )
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-> decltype( std::tuple_cat(ds_detail::as_tuple(std::forward<T1>(a1)),
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ds_detail::as_tuple(std::forward<T2>(a2)) ) ) {
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return std::tuple_cat(ds_detail::as_tuple(std::forward<T1>(a1)),
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ds_detail::as_tuple(std::forward<T2>(a2)));
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}
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} // namespace monomorphic
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} // namespace data
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} // namespace unit_test
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} // namespace boost
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#include <boost/test/detail/enable_warnings.hpp>
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#endif // BOOST_TEST_DATA_MONOMORPHIC_SAMPLE_MERGE_HPP
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