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