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comparison: js/xpconnect/wrappers/WrapperFactory.h
js/xpconnect/wrappers/WrapperFactory.h
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim: set ts=8 sts=4 et sw=4 tw=99: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef _xpc_WRAPPERFACTORY_H | |
| 8 #define _xpc_WRAPPERFACTORY_H | |
| 9 | |
| 10 #include "jswrapper.h" | |
| 11 | |
| 12 namespace xpc { | |
| 13 | |
| 14 class WrapperFactory { | |
| 15 public: | |
| 16 enum { WAIVE_XRAY_WRAPPER_FLAG = js::Wrapper::LAST_USED_FLAG << 1, | |
| 17 IS_XRAY_WRAPPER_FLAG = WAIVE_XRAY_WRAPPER_FLAG << 1 }; | |
| 18 | |
| 19 // Return true if any of any of the nested wrappers have the flag set. | |
| 20 static bool HasWrapperFlag(JSObject *wrapper, unsigned flag) { | |
| 21 unsigned flags = 0; | |
| 22 js::UncheckedUnwrap(wrapper, true, &flags); | |
| 23 return !!(flags & flag); | |
| 24 } | |
| 25 | |
| 26 static bool IsXrayWrapper(JSObject *wrapper) { | |
| 27 return HasWrapperFlag(wrapper, IS_XRAY_WRAPPER_FLAG); | |
| 28 } | |
| 29 | |
| 30 static bool HasWaiveXrayFlag(JSObject *wrapper) { | |
| 31 return HasWrapperFlag(wrapper, WAIVE_XRAY_WRAPPER_FLAG); | |
| 32 } | |
| 33 | |
| 34 static bool IsSecurityWrapper(JSObject *obj) { | |
| 35 return !js::CheckedUnwrap(obj); | |
| 36 } | |
| 37 | |
| 38 static bool IsCOW(JSObject *wrapper); | |
| 39 | |
| 40 static JSObject *GetXrayWaiver(JS::HandleObject obj); | |
| 41 static JSObject *CreateXrayWaiver(JSContext *cx, JS::HandleObject obj); | |
| 42 static JSObject *WaiveXray(JSContext *cx, JSObject *obj); | |
| 43 | |
| 44 static JSObject *DoubleWrap(JSContext *cx, JS::HandleObject obj, unsigned flags); | |
| 45 | |
| 46 // Prepare a given object for wrapping in a new compartment. | |
| 47 static JSObject *PrepareForWrapping(JSContext *cx, | |
| 48 JS::HandleObject scope, | |
| 49 JS::HandleObject obj, | |
| 50 unsigned flags); | |
| 51 | |
| 52 // Rewrap an object that is about to cross compartment boundaries. | |
| 53 static JSObject *Rewrap(JSContext *cx, | |
| 54 JS::HandleObject existing, | |
| 55 JS::HandleObject obj, | |
| 56 JS::HandleObject wrappedProto, | |
| 57 JS::HandleObject parent, | |
| 58 unsigned flags); | |
| 59 | |
| 60 // Wrap wrapped object into a waiver wrapper and then re-wrap it. | |
| 61 static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleValue vp); | |
| 62 static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleObject object); | |
| 63 | |
| 64 // Returns true if the wrapper is in not shadowing mode for the id. | |
| 65 static bool XrayWrapperNotShadowing(JSObject *wrapper, jsid id); | |
| 66 }; | |
| 67 | |
| 68 extern js::Wrapper XrayWaiver; | |
| 69 | |
| 70 } | |
| 71 | |
| 72 #endif /* _xpc_WRAPPERFACTORY_H */ |
