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construct/include/ircd/js/function_native.h

78 lines
2.4 KiB
C++

/*
* 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_FUNCTION_NATIVE
namespace ircd {
namespace js {
struct function::native
:root<JSFunction *>
{
using closure = std::function<value (object::handle, value::handle, const args &)>;
const char *_name;
closure lambda;
protected:
virtual value on_call(object::handle callee, value::handle that, const args &);
virtual value on_new(object::handle callee, const args &);
private:
static function::native &from(JSObject *const &);
static bool handle_call(JSContext *, unsigned, JS::Value *) noexcept;
public:
uint16_t arity() const;
string display_name() const;
string name() const;
value operator()(const object::handle &, const vector<value>::handle &) const;
template<class... args> value operator()(const object::handle &, args&&...) const;
native(const char *const &name = "<native>",
const uint &flags = 0,
const uint &arity = 0,
const closure & = {});
native(native &&) = delete;
native(const native &) = delete;
virtual ~native() noexcept;
};
template<class... args>
value
function::native::operator()(const object::handle &that,
args&&... a)
const
{
const vector<value> argv
{
std::forward<args>(a)...
};
const vector<value>::handle handle(argv);
return operator()(that, handle);
}
} // namespace js
} // namespace ircd