mirror of
https://github.com/NohamR/RMHook-Win.git
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81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
// Copyright (C) 2022 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#ifndef QOVERLOAD_H
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#define QOVERLOAD_H
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#include <QtCore/qtconfigmacros.h>
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#if 0
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#pragma qt_class(QOverload)
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#endif
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QT_BEGIN_NAMESPACE
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#ifdef Q_QDOC
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// Just for documentation generation
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template<typename T>
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auto qOverload(T functionPointer);
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template<typename T>
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auto qConstOverload(T memberFunctionPointer);
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template<typename T>
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auto qNonConstOverload(T memberFunctionPointer);
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#else
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template <typename... Args>
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struct QNonConstOverload
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{
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template <typename R, typename T>
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constexpr auto operator()(R (T::*ptr)(Args...)) const noexcept -> decltype(ptr)
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{ return ptr; }
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template <typename R, typename T>
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static constexpr auto of(R (T::*ptr)(Args...)) noexcept -> decltype(ptr)
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{ return ptr; }
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};
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template <typename... Args>
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struct QConstOverload
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{
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template <typename R, typename T>
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constexpr auto operator()(R (T::*ptr)(Args...) const) const noexcept -> decltype(ptr)
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{ return ptr; }
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template <typename R, typename T>
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static constexpr auto of(R (T::*ptr)(Args...) const) noexcept -> decltype(ptr)
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{ return ptr; }
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};
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template <typename... Args>
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struct QOverload : QConstOverload<Args...>, QNonConstOverload<Args...>
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{
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using QConstOverload<Args...>::of;
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using QConstOverload<Args...>::operator();
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using QNonConstOverload<Args...>::of;
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using QNonConstOverload<Args...>::operator();
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template <typename R>
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constexpr auto operator()(R (*ptr)(Args...)) const noexcept -> decltype(ptr)
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{ return ptr; }
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template <typename R>
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static constexpr auto of(R (*ptr)(Args...)) noexcept -> decltype(ptr)
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{ return ptr; }
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};
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template <typename... Args> constexpr inline QOverload<Args...> qOverload = {};
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template <typename... Args> constexpr inline QConstOverload<Args...> qConstOverload = {};
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template <typename... Args> constexpr inline QNonConstOverload<Args...> qNonConstOverload = {};
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#endif // Q_QDOC
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#define QT_VA_ARGS_CHOOSE(_1, _2, _3, _4, _5, _6, _7, _8, _9, N, ...) N
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#define QT_VA_ARGS_EXPAND(...) __VA_ARGS__ // Needed for MSVC
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#define QT_VA_ARGS_COUNT(...) QT_VA_ARGS_EXPAND(QT_VA_ARGS_CHOOSE(__VA_ARGS__, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0))
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#define QT_OVERLOADED_MACRO_EXPAND(MACRO, ARGC) MACRO##_##ARGC
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#define QT_OVERLOADED_MACRO_IMP(MACRO, ARGC) QT_OVERLOADED_MACRO_EXPAND(MACRO, ARGC)
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#define QT_OVERLOADED_MACRO(MACRO, ...) QT_VA_ARGS_EXPAND(QT_OVERLOADED_MACRO_IMP(MACRO, QT_VA_ARGS_COUNT(__VA_ARGS__))(__VA_ARGS__))
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QT_END_NAMESPACE
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#endif /* QOVERLOAD_H */
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