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62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set ts=8 sts=4 et sw=4 tw=99: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _xpc_WRAPPERFACTORY_H
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#define _xpc_WRAPPERFACTORY_H
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#include "jswrapper.h"
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namespace xpc {
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class WrapperFactory {
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public:
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enum { WAIVE_XRAY_WRAPPER_FLAG = js::Wrapper::LAST_USED_FLAG << 1,
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IS_XRAY_WRAPPER_FLAG = WAIVE_XRAY_WRAPPER_FLAG << 1 };
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// Return true if any of any of the nested wrappers have the flag set.
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static bool HasWrapperFlag(JSObject *wrapper, unsigned flag) {
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unsigned flags = 0;
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js::UncheckedUnwrap(wrapper, true, &flags);
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return !!(flags & flag);
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}
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static bool IsXrayWrapper(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, IS_XRAY_WRAPPER_FLAG);
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}
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static bool HasWaiveXrayFlag(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, WAIVE_XRAY_WRAPPER_FLAG);
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}
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static bool IsCOW(JSObject *wrapper);
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static JSObject *GetXrayWaiver(JS::HandleObject obj);
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static JSObject *CreateXrayWaiver(JSContext *cx, JS::HandleObject obj);
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static JSObject *WaiveXray(JSContext *cx, JSObject *obj);
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// Prepare a given object for wrapping in a new compartment.
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static JSObject *PrepareForWrapping(JSContext *cx,
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JS::HandleObject scope,
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JS::HandleObject obj,
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JS::HandleObject objectPassedToWrap);
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// Rewrap an object that is about to cross compartment boundaries.
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static JSObject *Rewrap(JSContext *cx,
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JS::HandleObject existing,
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JS::HandleObject obj,
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JS::HandleObject parent);
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// Wrap wrapped object into a waiver wrapper and then re-wrap it.
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static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleValue vp);
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static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleObject object);
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};
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extern const js::Wrapper XrayWaiver;
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}
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#endif /* _xpc_WRAPPERFACTORY_H */
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