dom/ipc/PermissionMessageUtils.h

   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 #ifndef mozilla_dom_permission_message_utils_h__
   8 #define mozilla_dom_permission_message_utils_h__
   9
  10 #include "mozilla/ipc/IPDLParamTraits.h"
  11 #include "ipc/IPCMessageUtils.h"
  12 #include "nsCOMPtr.h"
  13 #include "nsIPrincipal.h"
  14
  15 namespace mozilla::ipc {
  16
  17 template <>
  18 struct IPDLParamTraits<nsIPrincipal*> {
  19   static void Write(IPC::MessageWriter* aWriter, IProtocol* aActor,
  20                     nsIPrincipal* aParam);
  21   static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
  22                    RefPtr<nsIPrincipal>* aResult);
  23
  24   // Overload to support deserializing nsCOMPtr<nsIPrincipal> directly.
  25   static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
  26                    nsCOMPtr<nsIPrincipal>* aResult) {
  27     RefPtr<nsIPrincipal> result;
  28     if (!Read(aReader, aActor, &result)) {
  29       return false;
  30     }
  31     *aResult = std::move(result);
  32     return true;
  33   }
  34 };
  35
  36 }  // namespace mozilla::ipc
  37
  38 #endif  // mozilla_dom_permission_message_utils_h__