1 | // Copyright (C) 2021 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQMLDOMFUNCTIONREF_P_H |
5 | #define QQMLDOMFUNCTIONREF_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QtCore/private/qglobal_p.h> |
19 | |
20 | #if !defined(Q_CC_MSVC) || Q_CC_MSVC >= 1930 |
21 | #include <QtCore/qxpfunctional.h> |
22 | |
23 | QT_BEGIN_NAMESPACE |
24 | namespace QQmlJS { |
25 | namespace Dom { |
26 | template <typename T> |
27 | using function_ref = qxp::function_ref<T>; |
28 | } // namespace Dom |
29 | } // namespace QQmlJS |
30 | QT_END_NAMESPACE |
31 | |
32 | #else |
33 | |
34 | #include <functional> |
35 | |
36 | QT_BEGIN_NAMESPACE |
37 | namespace QQmlJS { |
38 | namespace Dom { |
39 | namespace _detail { |
40 | template <typename T> |
41 | struct function_ref_helper { using type = std::function<T>; }; |
42 | // std::function doesn't grok the const in <int(int) const>, so remove: |
43 | template <typename R, typename...Args> |
44 | struct function_ref_helper<R(Args...) const> : function_ref_helper<R(Args...)> {}; |
45 | // std::function doesn't grok the noexcept in <int(int) noexcept>, so remove: |
46 | template <typename R, typename...Args> |
47 | struct function_ref_helper<R(Args...) noexcept> : function_ref_helper<R(Args...)> {}; |
48 | // and both together: |
49 | template <typename R, typename...Args> |
50 | struct function_ref_helper<R(Args...) const noexcept> : function_ref_helper<R(Args...)> {}; |
51 | } // namespace _detail |
52 | template <typename T> |
53 | using function_ref = const typename _detail::function_ref_helper<T>::type &; |
54 | } // namespace Dom |
55 | } // namespace QQmlJS |
56 | QT_END_NAMESPACE |
57 | |
58 | #endif |
59 | |
60 | #endif // QQMLDOMFUNCTIONREF_P_H |
61 | |