#pragma once

#if !defined(MIJIN_UTIL_SCOPE_GUARD_HPP_INCLUDED)
#define MIJIN_UTIL_SCOPE_GUARD_HPP_INCLUDED 1

#include <functional>
#include "./common_macros.hpp"

#define MIJIN_SCOPE_EXIT_NAMED(name) \
const mijin::ScopeExitGuard name = [&]()

#define MIJIN_SCOPE_EXIT MIJIN_SCOPE_EXIT_NAMED(MIJIN_CONCAT(MIJIN_CONCAT(scope_guard_, __LINE__), __))

namespace mijin
{
class ScopeExitGuard
{
private:
    mutable std::function<void(void)> func; // variable is declared const to make clang-tidy happy, but we still want to be able to reset()
public:
    template<typename TFunc>
    inline ScopeExitGuard(TFunc&& func_) noexcept : func(std::forward<TFunc>(func_)) {}
    ScopeExitGuard(const ScopeExitGuard&) noexcept = delete;
    ScopeExitGuard(ScopeExitGuard&&) noexcept = delete;
    inline ~ScopeExitGuard() noexcept
    {
        if (func) {
            func();
        }
    }

    ScopeExitGuard& operator=(const ScopeExitGuard&) noexcept = delete;
    ScopeExitGuard& operator=(ScopeExitGuard&&) noexcept = delete;

    inline void reset() const noexcept
    {
        func = {};
    }
};
}

#endif // defined(MIJIN_UTIL_SCOPE_GUARD_HPP_INCLUDED)