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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
#include "nsISupports.idl"
#include "nsISeekableStream.idl"
interface nsIInputStream;
interface nsIInterfaceRequestor;
interface nsIOutputStream;
%{C++
namespace mozilla::ipc {
class RandomAccessStreamParams;
} // namespace mozilla::ipc
%}
native RandomAccessStreamParams(mozilla::ipc::RandomAccessStreamParams);
[ref] native RandomAccessStreamParamsRef(mozilla::ipc::RandomAccessStreamParams);
/**
* nsIRandomAccessStream
*
* An interface which supports both reading and writing to a storage starting
* at the current offset. Both the input stream and the output stream share the
* offset in the stream. Read operations invoked on the input stream start at
* the offset and advance it past the bytes read. Write operations invoked on
* the output stream start the offset and advance it past the bytes written.
* The offset can be set to an arbitrary value prior reading or writting. Each
* call to getInputStream or getOutputStream always returns the same object,
* rather than creating a new stream. It's recommended for objects implementing
* this interface to also implement nsIInputStream and nsIOutputStream, so they
* can be easilly used with e.g. NS_AsyncCopy.
*/
[scriptable, builtinclass, uuid(9b5904a8-886a-420f-a1d8-847de8ffc133)]
interface nsIRandomAccessStream : nsISeekableStream
{
/**
* This method always returns the same object.
*/
nsIInputStream getInputStream();
/**
* This method always returns the same object.
*/
nsIOutputStream getOutputStream();
/**
* Like getInputStream but infallible.
*/
[notxpcom, nostdcall] nsIInputStream inputStream();
/**
* Like getOutputStream but infallible.
*/
[notxpcom, nostdcall] nsIOutputStream outputStream();
[notxpcom, nostdcall] RandomAccessStreamParams serialize(in nsIInterfaceRequestor aCallbacks);
[notxpcom, nostdcall] bool deserialize(inout RandomAccessStreamParamsRef params);
};
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