29 lines
634 B
C++
29 lines
634 B
C++
// SPDX-License-Identifier: BSD-2-Clause
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// Copyright CM4all GmbH
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// author: Max Kellermann <mk@cm4all.com>
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#pragma once
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template<typename T>
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struct MemberPointerHelper;
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template<typename C, typename M>
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struct MemberPointerHelper<M C::*> {
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using ContainerType = C;
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using MemberType = M;
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};
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/**
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* Given a member pointer, this determines the member type.
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*/
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template<typename T>
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using MemberPointerType =
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typename MemberPointerHelper<T>::MemberType;
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/**
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* Given a member pointer, this determines the container type.
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*/
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template<typename T>
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using MemberPointerContainerType =
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typename MemberPointerHelper<T>::ContainerType;
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