ScopeExit.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include <type_traits>
#include <utility>
 
namespace CeresEngine {
 
    template<typename Func> struct ScopeExit {
        Func func;
 
        ScopeExit(Func&& func) noexcept(std::is_nothrow_move_constructible_v<Func>) : func(std::move(func)) {}
 
        ScopeExit(const ScopeExit&) = delete;
        ScopeExit& operator=(const ScopeExit&) = delete;
 
        ScopeExit(ScopeExit&& rhs) noexcept(std::is_nothrow_move_constructible_v<Func>) : func(std::move(rhs.func)) {}
        ScopeExit& operator=(ScopeExit&&) = delete;
 
        ~ScopeExit() noexcept {
            // On scope exit we call the destructor.
            func();
        }
    };
 
    template<typename Func> auto ce_scope_exit(Func&& func) noexcept { // NOLINT
        return ScopeExit(std::forward<Func>(func));
    }
 
    template<typename T, typename Func> auto ce_scope_exit(T* ptr, Func func) noexcept { // NOLINT
        return ce_scope_exit([ptr, func]() { return (ptr->*func)(); });
    }
 
#define CE_SCOPE_EXIT const ::CeresEngine::ScopeExit CE_TOKENPASTE2(_scopeExit, __COUNTER__) = [&]() noexcept
 
} // namespace CeresEngine