1#ifndef BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
2#define BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
3
4// Copyright 2015-2020, 2024 Peter Dimov.
5//
6// Distributed under the Boost Software License, Version 1.0.
7//
8// See accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt
10
11#include <boost/bind/detail/integer_sequence.hpp>
12#include <boost/config.hpp>
13#include <utility>
14#include <type_traits>
15#include <cstddef>
16
17#if defined(BOOST_MSVC)
18# pragma warning( push )
19# pragma warning( disable: 4100 ) // unreferenced formal parameter 'tp'
20#endif
21
22namespace boost
23{
24namespace _bi
25{
26
27// tuple_for_each( f, tp )
28
29template<class F, class Tp, std::size_t... J> F tuple_for_each_impl( F&& f, Tp&& tp, integer_sequence<std::size_t, J...> )
30{
31 using A = int[ 1 + sizeof...(J) ];
32 using std::get;
33 return (void)A{ 0, ((void)f(get<J>(std::forward<Tp>(tp))), 0)... }, std::forward<F>(f);
34}
35
36template<class F, class Tp> F tuple_for_each( F&& f, Tp&& tp )
37{
38 using seq = make_index_sequence<std::tuple_size<typename std::remove_reference<Tp>::type>::value>;
39 return _bi::tuple_for_each_impl( std::forward<F>(f), std::forward<Tp>(tp), seq() );
40}
41
42// tuple_for_each( f, tp1, tp2 )
43
44template<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...> )
45{
46 using A = int[ 1 + sizeof...(J) ];
47 using std::get;
48 return (void)A{ 0, ((void)f( get<J>(std::forward<Tp1>(tp1)), get<J>(std::forward<Tp2>(tp2)) ), 0)... }, std::forward<F>(f);
49}
50
51template<class F, class Tp1, class Tp2> F tuple_for_each( F&& f, Tp1&& tp1, Tp2&& tp2 )
52{
53 using seq = make_index_sequence<std::tuple_size<typename std::remove_reference<Tp1>::type>::value>;
54 return _bi::tuple_for_each_impl( std::forward<F>(f), std::forward<Tp1>(tp1), std::forward<Tp2>(tp2), seq() );
55}
56
57} // namespace _bi
58} // namespace boost
59
60#if defined(BOOST_MSVC)
61# pragma warning( pop )
62#endif
63
64#endif // #ifndef BOOST_BIND_DETAIL_TUPLE_FOR_EACH_HPP_INCLUDED
65

source code of boost/libs/bind/include/boost/bind/detail/tuple_for_each.hpp