js/xpconnect/wrappers/WaiveXrayWrapper.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 #include "WaiveXrayWrapper.h"
   8 #include "WrapperFactory.h"
   9 #include "jsapi.h"
  10 #include "js/CallAndConstruct.h"  // JS::IsCallable
  11
  12 using namespace JS;
  13
  14 namespace xpc {
  15
  16 bool WaiveXrayWrapper::getOwnPropertyDescriptor(
  17     JSContext* cx, HandleObject wrapper, HandleId id,
  18     MutableHandle<mozilla::Maybe<PropertyDescriptor>> desc) const {
  19   if (!CrossCompartmentWrapper::getOwnPropertyDescriptor(cx, wrapper, id,
  20                                                          desc)) {
  21     return false;
  22   }
  23
  24   if (desc.isNothing()) {
  25     return true;
  26   }
  27
  28   Rooted<PropertyDescriptor> desc_(cx, *desc);
  29   if (desc_.hasValue()) {
  30     if (!WrapperFactory::WaiveXrayAndWrap(cx, desc_.value())) {
  31       return false;
  32     }
  33   }
  34   if (desc_.hasGetter() && desc_.getter()) {
  35     RootedValue v(cx, JS::ObjectValue(*desc_.getter()));
  36     if (!WrapperFactory::WaiveXrayAndWrap(cx, &v)) {
  37       return false;
  38     }
  39     desc_.setGetter(&v.toObject());
  40   }
  41   if (desc_.hasSetter() && desc_.setter()) {
  42     RootedValue v(cx, JS::ObjectValue(*desc_.setter()));
  43     if (!WrapperFactory::WaiveXrayAndWrap(cx, &v)) {
  44       return false;
  45     }
  46     desc_.setSetter(&v.toObject());
  47   }
  48
  49   desc.set(mozilla::Some(desc_.get()));
  50   return true;
  51 }
  52
  53 bool WaiveXrayWrapper::get(JSContext* cx, HandleObject wrapper,
  54                            HandleValue receiver, HandleId id,
  55                            MutableHandleValue vp) const {
  56   return CrossCompartmentWrapper::get(cx, wrapper, receiver, id, vp) &&
  57          WrapperFactory::WaiveXrayAndWrap(cx, vp);
  58 }
  59
  60 bool WaiveXrayWrapper::call(JSContext* cx, HandleObject wrapper,
  61                             const JS::CallArgs& args) const {
  62   return CrossCompartmentWrapper::call(cx, wrapper, args) &&
  63          WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
  64 }
  65
  66 bool WaiveXrayWrapper::construct(JSContext* cx, HandleObject wrapper,
  67                                  const JS::CallArgs& args) const {
  68   return CrossCompartmentWrapper::construct(cx, wrapper, args) &&
  69          WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
  70 }
  71
  72 // NB: This is important as the other side of a handshake with FieldGetter. See
  73 // nsXBLProtoImplField.cpp.
  74 bool WaiveXrayWrapper::nativeCall(JSContext* cx, JS::IsAcceptableThis test,
  75                                   JS::NativeImpl impl,
  76                                   const JS::CallArgs& args) const {
  77   return CrossCompartmentWrapper::nativeCall(cx, test, impl, args) &&
  78          WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
  79 }
  80
  81 bool WaiveXrayWrapper::getPrototype(JSContext* cx, HandleObject wrapper,
  82                                     MutableHandleObject protop) const {
  83   return CrossCompartmentWrapper::getPrototype(cx, wrapper, protop) &&
  84          (!protop || WrapperFactory::WaiveXrayAndWrap(cx, protop));
  85 }
  86
  87 bool WaiveXrayWrapper::getPrototypeIfOrdinary(
  88     JSContext* cx, HandleObject wrapper, bool* isOrdinary,
  89     MutableHandleObject protop) const {
  90   return CrossCompartmentWrapper::getPrototypeIfOrdinary(cx, wrapper,
  91                                                          isOrdinary, protop) &&
  92          (!protop || WrapperFactory::WaiveXrayAndWrap(cx, protop));
  93 }
  94
  95 }  // namespace xpc