blob: 6dcb6bc25e9062802b46f03a577ff6124829ff21 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/*!
@file
Defines operators for Iterables.
@copyright Louis Dionne 2013-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_HANA_DETAIL_OPERATORS_ITERABLE_HPP
#define BOOST_HANA_DETAIL_OPERATORS_ITERABLE_HPP
#include <boost/hana/config.hpp>
#include <boost/hana/fwd/at.hpp>
BOOST_HANA_NAMESPACE_BEGIN namespace detail {
template <typename Derived>
struct iterable_operators {
template <typename N>
constexpr decltype(auto) operator[](N&& n) & {
return hana::at(static_cast<Derived&>(*this),
static_cast<N&&>(n));
}
template <typename N>
constexpr decltype(auto) operator[](N&& n) const& {
return hana::at(static_cast<Derived const&>(*this),
static_cast<N&&>(n));
}
template <typename N>
constexpr decltype(auto) operator[](N&& n) && {
return hana::at(static_cast<Derived&&>(*this),
static_cast<N&&>(n));
}
};
} BOOST_HANA_NAMESPACE_END
#endif // !BOOST_HANA_DETAIL_OPERATORS_ITERABLE_HPP
|
