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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "RandomAccessStreamUtils.h"
#include "mozilla/NotNull.h"
#include "mozilla/Result.h"
#include "mozilla/ResultVariant.h"
#include "mozilla/dom/quota/FileStreams.h"
#include "mozilla/ipc/RandomAccessStreamParams.h"
#include "nsFileStreams.h"
#include "nsIInterfaceRequestor.h"
#include "nsIRandomAccessStream.h"
namespace mozilla::ipc {
RandomAccessStreamParams SerializeRandomAccessStream(
MovingNotNull<nsCOMPtr<nsIRandomAccessStream>> aStream,
nsIInterfaceRequestor* aCallbacks) {
NotNull<nsCOMPtr<nsIRandomAccessStream>> stream = std::move(aStream);
RandomAccessStreamParams streamParams = stream->Serialize(aCallbacks);
MOZ_ASSERT(streamParams.type() != RandomAccessStreamParams::T__None);
return streamParams;
}
Maybe<RandomAccessStreamParams> SerializeRandomAccessStream(
nsCOMPtr<nsIRandomAccessStream> aStream,
nsIInterfaceRequestor* aCallbacks) {
if (!aStream) {
return Nothing();
}
return Some(SerializeRandomAccessStream(
WrapMovingNotNullUnchecked(std::move(aStream)), aCallbacks));
}
Result<MovingNotNull<nsCOMPtr<nsIRandomAccessStream>>, bool>
DeserializeRandomAccessStream(RandomAccessStreamParams& aStreamParams) {
nsCOMPtr<nsIRandomAccessStream> stream;
switch (aStreamParams.type()) {
case RandomAccessStreamParams::TFileRandomAccessStreamParams:
nsFileRandomAccessStream::Create(NS_GET_IID(nsIFileRandomAccessStream),
getter_AddRefs(stream));
break;
case RandomAccessStreamParams::TLimitingFileRandomAccessStreamParams:
stream = new dom::quota::FileRandomAccessStream();
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown params!");
return Err(false);
}
MOZ_ASSERT(stream);
if (!stream->Deserialize(aStreamParams)) {
MOZ_ASSERT_UNREACHABLE("Deserialize failed!");
return Err(false);
}
return WrapMovingNotNullUnchecked(std::move(stream));
}
Result<nsCOMPtr<nsIRandomAccessStream>, bool> DeserializeRandomAccessStream(
Maybe<RandomAccessStreamParams>& aStreamParams) {
if (aStreamParams.isNothing()) {
return nsCOMPtr<nsIRandomAccessStream>();
}
auto res = DeserializeRandomAccessStream(aStreamParams.ref());
if (res.isErr()) {
return res.propagateErr();
}
MovingNotNull<nsCOMPtr<nsIRandomAccessStream>> stream = res.unwrap();
return std::move(stream).unwrapBasePtr();
}
} // namespace mozilla::ipc
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