65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
#ifndef BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
|
|
#define BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
|
|
|
|
// Copyright 2015-2020, 2024 Peter Dimov.
|
|
//
|
|
// 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
|
|
|
|
#include <boost/bind/detail/integer_sequence.hpp>
|
|
#include <boost/config.hpp>
|
|
#include <utility>
|
|
#include <type_traits>
|
|
#include <cstddef>
|
|
|
|
#if defined(BOOST_MSVC)
|
|
# pragma warning( push )
|
|
# pragma warning( disable: 4100 ) // unreferenced formal parameter 'tp'
|
|
#endif
|
|
|
|
namespace boost
|
|
{
|
|
namespace _bi
|
|
{
|
|
|
|
// tuple_for_each( f, tp )
|
|
|
|
template<class F, class Tp, std::size_t... J> F tuple_for_each_impl( F&& f, Tp&& tp, integer_sequence<std::size_t, J...> )
|
|
{
|
|
using A = int[ 1 + sizeof...(J) ];
|
|
using std::get;
|
|
return (void)A{ 0, ((void)f(get<J>(std::forward<Tp>(tp))), 0)... }, std::forward<F>(f);
|
|
}
|
|
|
|
template<class F, class Tp> F tuple_for_each( F&& f, Tp&& tp )
|
|
{
|
|
using seq = make_index_sequence<std::tuple_size<typename std::remove_reference<Tp>::type>::value>;
|
|
return _bi::tuple_for_each_impl( std::forward<F>(f), std::forward<Tp>(tp), seq() );
|
|
}
|
|
|
|
// tuple_for_each( f, tp1, tp2 )
|
|
|
|
template<class F, class Tp1, class Tp2, std::size_t... J> F tuple_for_each_impl( F&& f, Tp1&& tp1, Tp2&& tp2, integer_sequence<std::size_t, J...> )
|
|
{
|
|
using A = int[ 1 + sizeof...(J) ];
|
|
using std::get;
|
|
return (void)A{ 0, ((void)f( get<J>(std::forward<Tp1>(tp1)), get<J>(std::forward<Tp2>(tp2)) ), 0)... }, std::forward<F>(f);
|
|
}
|
|
|
|
template<class F, class Tp1, class Tp2> F tuple_for_each( F&& f, Tp1&& tp1, Tp2&& tp2 )
|
|
{
|
|
using seq = make_index_sequence<std::tuple_size<typename std::remove_reference<Tp1>::type>::value>;
|
|
return _bi::tuple_for_each_impl( std::forward<F>(f), std::forward<Tp1>(tp1), std::forward<Tp2>(tp2), seq() );
|
|
}
|
|
|
|
} // namespace _bi
|
|
} // namespace boost
|
|
|
|
#if defined(BOOST_MSVC)
|
|
# pragma warning( pop )
|
|
#endif
|
|
|
|
#endif // #ifndef BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
|