ExecOnOOS.hpp

// SPDX-FileCopyrightText: 2025 Vincent Leroy
// SPDX-License-Identifier: MIT
//
// This file is part of dfx.
//
// Licensed under the MIT License. See the LICENSE file in the project root
// for full license information.
 
#pragma once
 
// C++ includes
#include <utility>
#include <type_traits>
 
namespace dfx::Utils
{
template<typename F>
struct ExecOnOOS
{
    ExecOnOOS(bool exec, F && f) noexcept
        : cb         { std::move(f) }
        , shouldExec { exec }
    {}

    ExecOnOOS(F && f) noexcept
        : ExecOnOOS(true, std::move(f))
    {}

    ~ExecOnOOS() noexcept(std::is_nothrow_invocable_v<F>)
    { if (shouldExec) cb(); }

    void cancel() noexcept         { shouldExec = false; }
    bool willExec() const noexcept { return shouldExec; }

    F cb;
    bool shouldExec;
};
} // !namespace dfx::Utils