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Bug 1344204 - nsMultiplexInputStream should be serializable/cloneable following the internal sub streams, r=smaug

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This commit is contained in:
Andrea Marchesini 2017-03-08 07:48:16 +01:00
parent 6ee4c39904
commit 2d8722e0b8
1 changed files with 52 additions and 6 deletions
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58
xpcom/io/nsMultiplexInputStream.cpp
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@ -67,6 +67,10 @@ private:
const char* aFromRawSegment, uint32_t aToOffset,
uint32_t aCount, uint32_t* aWriteCount);
bool IsSeekable() const;
bool IsIPCSerializable() const;
bool IsCloneable() const;
Mutex mLock; // Protects access to all data members.
nsTArray<nsCOMPtr<nsIInputStream>> mStreams;
uint32_t mCurrentStream;
@ -80,12 +84,18 @@ NS_IMPL_RELEASE(nsMultiplexInputStream)
NS_IMPL_CLASSINFO(nsMultiplexInputStream, nullptr, nsIClassInfo::THREADSAFE,
NS_MULTIPLEXINPUTSTREAM_CID)
NS_IMPL_QUERY_INTERFACE_CI(nsMultiplexInputStream,
nsIMultiplexInputStream,
nsIInputStream,
nsISeekableStream,
nsIIPCSerializableInputStream,
nsICloneableInputStream)
NS_INTERFACE_MAP_BEGIN(nsMultiplexInputStream)
NS_INTERFACE_MAP_ENTRY(nsIMultiplexInputStream)
NS_INTERFACE_MAP_ENTRY(nsIInputStream)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsISeekableStream, IsSeekable())
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIIPCSerializableInputStream,
IsIPCSerializable())
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsICloneableInputStream,
IsCloneable())
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIMultiplexInputStream)
NS_IMPL_QUERY_CLASSINFO(nsMultiplexInputStream)
NS_INTERFACE_MAP_END
NS_IMPL_CI_INTERFACE_GETTER(nsMultiplexInputStream,
nsIMultiplexInputStream,
nsIInputStream,
@ -833,3 +843,39 @@ nsMultiplexInputStream::Clone(nsIInputStream** aClone)
clone.forget(aClone);
return NS_OK;
}
bool
nsMultiplexInputStream::IsSeekable() const
{
for (uint32_t i = 0, len = mStreams.Length(); i < len; ++i) {
nsCOMPtr<nsISeekableStream> substream = do_QueryInterface(mStreams[i]);
if (!substream) {
return false;
}
}
return true;
}
bool
nsMultiplexInputStream::IsIPCSerializable() const
{
for (uint32_t i = 0, len = mStreams.Length(); i < len; ++i) {
nsCOMPtr<nsIIPCSerializableInputStream> substream = do_QueryInterface(mStreams[i]);
if (!substream) {
return false;
}
}
return true;
}
bool
nsMultiplexInputStream::IsCloneable() const
{
for (uint32_t i = 0, len = mStreams.Length(); i < len; ++i) {
nsCOMPtr<nsICloneableInputStream> substream = do_QueryInterface(mStreams[i]);
if (!substream) {
return false;
}
}
return true;
}