nsIIPCSerializableInputStream.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_ipc_nsIIPCSerializableInputStream_h
#define mozilla_ipc_nsIIPCSerializableInputStream_h

#include "nsISupports.h"
#include "mozilla/Attributes.h"

struct nsTArrayDefaultAllocator;
template <class> class nsTArray;

namespace mozilla {
namespace ipc {

class FileDescriptor;
class InputStreamParams;

} // namespace ipc
} // namespace mozilla

#define NS_IIPCSERIALIZABLEINPUTSTREAM_IID \
  {0xb0211b14, 0xea6d, 0x40d4, {0x87, 0xb5, 0x7b, 0xe3, 0xdf, 0xac, 0x09, 0xd1}}

class NS_NO_VTABLE nsIIPCSerializableInputStream : public nsISupports
{
public:
  typedef nsTArray<mozilla::ipc::FileDescriptor>
          FileDescriptorArray;

  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IIPCSERIALIZABLEINPUTSTREAM_IID)

  virtual void
  Serialize(mozilla::ipc::InputStreamParams& aParams,
            FileDescriptorArray& aFileDescriptors) = 0;

  virtual bool
  Deserialize(const mozilla::ipc::InputStreamParams& aParams,
              const FileDescriptorArray& aFileDescriptors) = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIIPCSerializableInputStream,
                              NS_IIPCSERIALIZABLEINPUTSTREAM_IID)

#define NS_DECL_NSIIPCSERIALIZABLEINPUTSTREAM                                  \
  virtual void                                                                 \
  Serialize(mozilla::ipc::InputStreamParams&,                                  \
            FileDescriptorArray&) MOZ_OVERRIDE;                                \
                                                                               \
  virtual bool                                                                 \
  Deserialize(const mozilla::ipc::InputStreamParams&,                          \
              const FileDescriptorArray&) MOZ_OVERRIDE;

#define NS_FORWARD_NSIIPCSERIALIZABLEINPUTSTREAM(_to)                          \
  virtual void                                                                 \
  Serialize(mozilla::ipc::InputStreamParams& aParams,                          \
            FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE                \
  {                                                                            \
    _to Serialize(aParams, aFileDescriptors);                                  \
  }                                                                            \
                                                                               \
  virtual bool                                                                 \
  Deserialize(const mozilla::ipc::InputStreamParams& aParams,                  \
              const FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE        \
  {                                                                            \
    return _to Deserialize(aParams, aFileDescriptors);                         \
  }

#define NS_FORWARD_SAFE_NSIIPCSERIALIZABLEINPUTSTREAM(_to)                     \
  virtual void                                                                 \
  Serialize(mozilla::ipc::InputStreamParams& aParams,                          \
            FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE                \
  {                                                                            \
    if (_to) {                                                                 \
      _to->Serialize(aParams, aFileDescriptors);                               \
    }                                                                          \
  }                                                                            \
                                                                               \
  virtual bool                                                                 \
  Deserialize(const mozilla::ipc::InputStreamParams& aParams,                  \
              const FileDescriptorArray& aFileDescriptors) MOZ_OVERRIDE        \
  {                                                                            \
    return _to ? _to->Deserialize(aParams, aFileDescriptors) : false;          \
  }

#endif // mozilla_ipc_nsIIPCSerializableInputStream_h