scope_guard.h

#ifndef __SCOPE_GUARD_HPP__
#define __SCOPE_GUARD_HPP__

#include <functional>


class ScopeGuard
{
public:
	ScopeGuard(std::function<void(void)>& on_scope_exit)
	{
		this->on_scope_exit = on_scope_exit;
	}
	ScopeGuard(std::function<void(void)>&& on_scope_exit)
	{
		this->on_scope_exit = std::move(on_scope_exit);
	}

	void dismiss()
	{
		is_dismiss = true;
	}
	~ScopeGuard()
	{
		if (!is_dismiss)
			on_scope_exit();
	}

	ScopeGuard(const ScopeGuard&) = delete;
	ScopeGuard& operator= (const ScopeGuard&) = delete;
	ScopeGuard(ScopeGuard&&) = delete;
	ScopeGuard& operator= (ScopeGuard&&) = delete;

protected:
	bool is_dismiss = false;
	std::function<void(void)> on_scope_exit;
};


#define SCOPEGUARD_LINENAME_CAT(name, line) name##line
#define SCOPEGUARD_LINENAME(name, line) SCOPEGUARD_LINENAME_CAT(name, line)
#define SCOPE_EXIT(x) ScopeGuard SCOPEGUARD_LINENAME(scope_exit_, __LINE__)((x))

#endif /*__SCOPE_GUARD_HPP__*/