ipc/glue/SerializedStructuredCloneBuffer.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 __IPC_GLUE_SERIALIZEDSTRUCTUREDCLONEBUFFER_H__
   8 #define __IPC_GLUE_SERIALIZEDSTRUCTUREDCLONEBUFFER_H__
   9
  10 #include <algorithm>
  11 #include <cstdint>
  12 #include <cstdlib>
  13 #include <string>
  14 #include <utility>
  15 #include "chrome/common/ipc_message.h"
  16 #include "chrome/common/ipc_message_utils.h"
  17 #include "js/AllocPolicy.h"
  18 #include "js/StructuredClone.h"
  19 #include "mozilla/Assertions.h"
  20 #include "mozilla/BufferList.h"
  21 #include "mozilla/Vector.h"
  22 #include "mozilla/mozalloc.h"
  23 class PickleIterator;
  24
  25 namespace mozilla {
  26 template <typename...>
  27 class Variant;
  28
  29 namespace detail {
  30 template <typename...>
  31 struct VariantTag;
  32 }
  33 }  // namespace mozilla
  34
  35 namespace mozilla {
  36
  37 struct SerializedStructuredCloneBuffer final {
  38   SerializedStructuredCloneBuffer() = default;
  39
  40   SerializedStructuredCloneBuffer(SerializedStructuredCloneBuffer&&) = default;
  41   SerializedStructuredCloneBuffer& operator=(
  42       SerializedStructuredCloneBuffer&&) = default;
  43
  44   SerializedStructuredCloneBuffer(const SerializedStructuredCloneBuffer&) =
  45       delete;
  46   SerializedStructuredCloneBuffer& operator=(
  47       const SerializedStructuredCloneBuffer& aOther) = delete;
  48
  49   bool operator==(const SerializedStructuredCloneBuffer& aOther) const {
  50     // The copy assignment operator and the equality operator are
  51     // needed by the IPDL generated code. We relied on the copy
  52     // assignment operator at some places but we never use the
  53     // equality operator.
  54     return false;
  55   }
  56
  57   JSStructuredCloneData data{JS::StructuredCloneScope::Unassigned};
  58 };
  59
  60 }  // namespace mozilla
  61
  62 namespace IPC {
  63 template <>
  64 struct ParamTraits<JSStructuredCloneData> {
  65   typedef JSStructuredCloneData paramType;
  66
  67   static void Write(MessageWriter* aWriter, const paramType& aParam);
  68
  69   static bool Read(MessageReader* aReader, paramType* aResult);
  70 };
  71
  72 template <>
  73 struct ParamTraits<mozilla::SerializedStructuredCloneBuffer> {
  74   typedef mozilla::SerializedStructuredCloneBuffer paramType;
  75
  76   static void Write(MessageWriter* aWriter, const paramType& aParam) {
  77     WriteParam(aWriter, aParam.data);
  78   }
  79
  80   static bool Read(MessageReader* aReader, paramType* aResult) {
  81     return ReadParam(aReader, &aResult->data);
  82   }
  83 };
  84
  85 }  // namespace IPC
  86
  87 #endif /* __IPC_GLUE_SERIALIZEDSTRUCTUREDCLONEBUFFER_H__ */