ScopeExit.h

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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2024 Jorrit Rouwe
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <Jolt/Core/NonCopyable.h>
 
JPH_NAMESPACE_BEGIN
 
template <class F>
class ScopeExit : public NonCopyable
{
public:
    JPH_INLINE explicit ScopeExit(F &&inFunction) : mFunction(std::move(inFunction)) { }
 
    JPH_INLINE          ~ScopeExit() { if (!mInvoked) mFunction(); }
 
    JPH_INLINE void     Invoke()
    {
        if (!mInvoked)
        {
            mFunction();
            mInvoked = true;
        }
    }
 
    JPH_INLINE void     Release()
    {
        mInvoked = true;
    }
 
private:
    F                   mFunction;
    bool                mInvoked = false;
};
 
#define JPH_SCOPE_EXIT_TAG2(line)           scope_exit##line
#define JPH_SCOPE_EXIT_TAG(line)            JPH_SCOPE_EXIT_TAG2(line)
 
#define JPH_SCOPE_EXIT(...) ScopeExit JPH_SCOPE_EXIT_TAG(__LINE__)(__VA_ARGS__)
 
JPH_NAMESPACE_END