construct/include/ircd/js/runtime.h

/*
 * 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_RUNTIME_H

namespace ircd {
namespace js   {

class runtime
:custom_ptr<JSRuntime>
{
	static void handle_error(JSContext *, const char *msg, JSErrorReport *);

  public:
	operator JSRuntime *() const                 { return get();                                   }
	operator JSRuntime &() const                 { return custom_ptr<JSRuntime>::operator*();      }

	void reset()                                 { custom_ptr<JSRuntime>::reset(nullptr);          }

	template<class... args> runtime(args&&...);
	runtime() = default;
};

// Main JSRuntime instance. This should be passable in any argument requiring a
// JSRuntime pointer. It is only valid while the js::init object is held by ircd::main().
extern runtime main;

template<class... args>
runtime::runtime(args&&... a)
:custom_ptr<JSRuntime>
{
	JS_NewRuntime(std::forward<args>(a)...),
	JS_DestroyRuntime
}
{
	JS_SetErrorReporter(get(), handle_error);
}

} // namespace js
} // namespace ircd