mirror of
https://github.com/matrix-construct/construct
synced 2024-12-28 16:34:13 +01:00
118 lines
3.9 KiB
C++
118 lines
3.9 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_COMPARTMENT_H
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namespace ircd {
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namespace js {
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struct compartment
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{
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using closure_our = std::function<void (compartment &)>;
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using closure = std::function<void (JSCompartment *)>;
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private:
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static void handle_iterate(JSContext *, void *, JSCompartment *) noexcept;
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context *c;
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JSCompartment *prev;
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JSCompartment *ours;
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compartment *cprev;
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public:
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explicit operator const context &() const { return *c; }
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operator const JSCompartment *() const { return ours; }
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operator const JSCompartment &() const { return *ours; }
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explicit operator context &() { return *c; }
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operator JSCompartment *() { return ours; }
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operator JSCompartment &() { return *ours; }
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compartment(JSObject *const &, context &, const JSVersion & = JSVERSION_LATEST);
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compartment(JSObject *const &, const JSVersion & = JSVERSION_LATEST);
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compartment(context &, const JSVersion & = JSVERSION_LATEST);
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compartment(const JSVersion & = JSVERSION_LATEST);
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compartment(compartment &&) noexcept;
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compartment(const compartment &) = delete;
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~compartment() noexcept;
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friend void for_each_compartment_our(const closure_our &);
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friend void for_each_compartment(const closure &);
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static compartment &get(context &c);
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static compartment &get();
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};
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// Get our structure from JSCompartment. Returns null when not ours.
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const compartment *our(const JSCompartment *const &);
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compartment *our(JSCompartment *const &);
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// Compartment iterations
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void for_each_compartment_our(const compartment::closure_our &); // iterate our compartments only
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void for_each_compartment(const compartment::closure &); // iterate all compartments
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// Get the compartmentalized `this` object.
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JSObject *current_global(compartment &);
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inline compartment &
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compartment::get()
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{
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assert(cx);
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return get(*cx);
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}
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inline compartment &
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compartment::get(context &c)
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{
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const auto cp(current_compartment(c));
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if(unlikely(!cp))
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throw error("No current compartment on context(%p)", (const void *)&c);
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const auto ret(our(cp));
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if(unlikely(!ret))
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throw error("Current compartment on context(%p) not ours", (const void *)&c);
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return *ret;
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}
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inline JSObject *
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current_global(compartment &c)
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{
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return JS_GetGlobalForCompartmentOrNull(static_cast<context &>(c), c);
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}
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inline compartment *
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our(JSCompartment *const &cp)
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{
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return static_cast<compartment *>(JS_GetCompartmentPrivate(cp));
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}
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inline
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const compartment *
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our(const JSCompartment *const &cp)
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{
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return static_cast<const compartment *>(JS_GetCompartmentPrivate(const_cast<JSCompartment *>(cp)));
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}
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} // namespace js
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} // namespace ircd
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