mirror of
https://github.com/matrix-construct/construct
synced 2024-08-23 10:04:47 +02:00
306 lines
6.8 KiB
C++
306 lines
6.8 KiB
C++
/*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_JS_OBJECT_H
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namespace ircd {
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namespace js {
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namespace basic {
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template<lifetime L>
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struct object
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:root<JSObject *, L>
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{
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IRCD_OVERLOAD(array)
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using handle = typename root<JSObject *, L>::handle;
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using handle_mutable = typename root<JSObject *, L>::handle_mutable;
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operator JS::Value() const;
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// for array objects
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uint32_t size() const;
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void resize(const uint32_t &);
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// new object
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object(const JSClass *const &, const handle &ctor, const JS::HandleValueArray &args);
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object(const JSClass *const &, const JS::CallArgs &args);
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object(const JSClass *const &, const object &proto);
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object(const JSClass *const &);
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template<class T, lifetime LL> object(const root<T, LL> &);
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using root<JSObject *, L>::root;
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object(array_t, const size_t &length);
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object(const JS::HandleValueArray &);
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object(const value<L> &);
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object(JSObject *const &);
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object(JSObject &);
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object();
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};
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// Get the JSClass from which the trap can also be derived.
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template<lifetime L> const JSClass &jsclass(const object<L> &);
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// Private data slot (trap must have flag JSCLASS_HAS_PRIVATE)
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template<class T, lifetime L> T &priv(const object<L> &);
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template<lifetime L> void priv(object<L> &, void *const &);
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template<lifetime L> void priv(object<L> &, const void *const &);
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template<lifetime L> bool is_extensible(const object<L> &);
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template<lifetime L> bool is_array(const object<L> &);
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template<lifetime L> uint32_t size(const object<L> &);
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template<lifetime L> bool deep_freeze(const object<L> &);
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template<lifetime L> bool freeze(const object<L> &);
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} // namespace basic
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using object = basic::object<lifetime::stack>;
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using heap_object = basic::object<lifetime::heap>;
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using basic::priv;
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IRCD_STRONG_TYPEDEF(uint, reserved)
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//
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// Implementation
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//
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namespace basic {
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template<lifetime L>
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object<L>::object()
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:object<L>::root::type
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{
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JS_NewPlainObject(*cx)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (plain)");
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}
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template<lifetime L>
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object<L>::object(JSObject &obj)
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:object<L>::root::type{&obj}
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{
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}
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template<lifetime L>
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object<L>::object(JSObject *const &obj)
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:object<L>::root::type{obj}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object");
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}
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template<lifetime L>
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object<L>::object(const value<L> &val)
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:object<L>::root::type{}
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{
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if(!JS_ValueToObject(*cx, val, &(*this)))
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throw type_error("Value is not an Object");
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}
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template<lifetime L>
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object<L>::object(const JS::HandleValueArray &values)
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:object<L>::root::type
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{
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JS_NewArrayObject(*cx, values)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (array)");
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}
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template<lifetime L>
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object<L>::object(array_t,
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const size_t &length)
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:object<L>::root::type
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{
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JS_NewArrayObject(*cx, length)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (array)");
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}
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template<lifetime L>
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template<class T,
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lifetime LL>
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object<L>::object(const root<T, LL> &o)
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:object{o.get()}
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{
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}
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template<lifetime L>
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object<L>::object(const JSClass *const &clasp)
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:object<L>::root::type
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{
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JS_NewObject(*cx, clasp)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (clasp)");
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}
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template<lifetime L>
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object<L>::object(const JSClass *const &clasp,
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const object &proto)
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:object<L>::root::type
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{
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JS_NewObjectWithGivenProto(*cx, clasp, proto)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (with given proto)");
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}
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template<lifetime L>
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object<L>::object(const JSClass *const &clasp,
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const JS::CallArgs &args)
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:object<L>::root::type
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{
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JS_NewObjectForConstructor(*cx, clasp, args)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (for constructor)");
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}
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template<lifetime L>
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object<L>::object(const JSClass *const &clasp,
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const object::handle &ctor,
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const JS::HandleValueArray &args)
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:object<L>::root::type
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{
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JS_New(*cx, ctor, args)
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}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL object (new)");
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}
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template<lifetime L>
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void
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object<L>::resize(const uint32_t &length)
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{
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if(!JS_SetArrayLength(*cx, &(*this), length))
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throw internal_error("Failed to set array object length");
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}
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template<lifetime L>
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uint32_t
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object<L>::size()
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const
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{
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uint32_t ret;
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if(!JS_GetArrayLength(*cx, handle(*this), &ret))
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throw internal_error("Failed to get array object length");
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return ret;
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}
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template<lifetime L>
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object<L>::operator JS::Value()
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const
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{
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return this->get()? JS::ObjectValue(*this->get()) : JS::NullValue();
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}
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template<lifetime L>
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bool
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freeze(const object<L> & obj)
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{
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return JS_FreezeObject(*cx, obj);
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}
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template<lifetime L>
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bool
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deep_freeze(const object<L> & obj)
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{
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return JS_DeepFreezeObject(*cx, obj);
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}
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template<lifetime L>
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bool
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is_array(const object<L> & obj)
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{
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bool ret;
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if(!JS_IsArrayObject(*cx, obj, &ret))
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throw internal_error("Failed to query if object is array");
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return ret;
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}
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template<lifetime L>
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bool
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is_extensible(const object<L> & obj)
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{
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bool ret;
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if(!JS_IsExtensible(*cx, obj, &ret))
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throw internal_error("Failed to query object extensibility");
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return ret;
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}
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template<lifetime L>
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void
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priv(object<L> &obj,
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const void *const &ptr)
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{
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priv(obj, const_cast<void *>(ptr));
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}
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template<lifetime L>
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void
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priv(object<L> &obj,
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void *const &ptr)
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{
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JS_SetPrivate(obj, ptr);
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}
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template<class T,
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lifetime L>
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T &
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priv(const object<L> &obj)
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{
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const auto &jsc(jsclass(obj));
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const auto ret(JS_GetInstancePrivate(*cx, obj, &jsc, nullptr));
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if(!ret)
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throw error("Object has no private data");
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return *reinterpret_cast<T *>(ret);
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}
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template<lifetime L>
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const JSClass &
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jsclass(const object<L> &obj)
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{
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const auto jsc(JS_GetClass(obj));
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if(unlikely(!jsc))
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throw error("Object has no JSClass");
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return *const_cast<JSClass *>(jsc);
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}
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} // namespace basic
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} // namespace js
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} // namespace ircd
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