blob: bd8756595db1f9c51d64e51a7994adeca5a5a302 (
plain) (
blame)
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
41
42
43
44
|
// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#ifndef CATCH_LOGICAL_TRAITS_HPP_INCLUDED
#define CATCH_LOGICAL_TRAITS_HPP_INCLUDED
#include <type_traits>
namespace Catch {
namespace Detail {
#if defined( __cpp_lib_logical_traits ) && __cpp_lib_logical_traits >= 201510
using std::conjunction;
using std::disjunction;
using std::negation;
#else
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional_t<bool( B1::value ), conjunction<Bn...>, B1> {};
template <class...> struct disjunction : std::false_type {};
template <class B1> struct disjunction<B1> : B1 {};
template <class B1, class... Bn>
struct disjunction<B1, Bn...>
: std::conditional_t<bool( B1::value ), B1, disjunction<Bn...>> {};
template <class B>
struct negation : std::integral_constant<bool, !bool(B::value)> {};
#endif
} // namespace Detail
} // namespace Catch
#endif // CATCH_LOGICAL_TRAITS_HPP_INCLUDED
|
