/*
 * Copyright (C) 2016 Charybdis Development Team
 * Copyright (C) 2016 Jason Volk <jason@zemos.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice is present in all copies.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once
#define HAVE_IRCD_JS_TRACING_H

namespace ircd {
namespace js   {

struct tracing
{
	struct thing
	{
		void *ptr;
		jstype type;

		template<class T> operator const JS::Heap<T> &() const;
		template<class T> operator JS::Heap<T> &();
	};

	using list = std::list<thing>;

	list heap;

	void operator()(JSTracer *const &);

	tracing();
	~tracing() noexcept;
};

template<class T>
tracing::thing::operator JS::Heap<T> &()
{
	return *reinterpret_cast<JS::Heap<T> *>(ptr);
}

template<class T>
tracing::thing::operator const JS::Heap<T> &()
const
{
	return *reinterpret_cast<const JS::Heap<T> *>(ptr);
}

} // namespace js
} // namespace ircd