Minimal async decoder support#46
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this is so DecoderShared can be used from async decoders
for now just for the Decoder in inline and outboard mode, not yet for the SliceDecoder.
rklaehn
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Jan 27, 2023
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| #[derive(Clone, Debug)] | ||
| pub struct AsyncDecoder<T: AsyncRead + Unpin, O: AsyncRead + Unpin> { |
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It would also be possible to have the Decoder support both async and sync, but the ergonomics of that is really bad. I tried it. So I went with this tiny wrapper instead.
This requires some seek logic, but no actual seeking in the underlying inputs
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I looked into what it would take to support seek. I think once you do that you can no longer share DecoderShared with the sync version, since you need some state enum... Goddamn async... |
just give the state a case Done so we can implement take
we don't have to do this anymore now that we properly track state
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This can always succeed, because the SliceDecoder will never implement Seek
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This is an attempt to split #44 into more manageable parts.
Adds very limited async support. For now just
tokio::io::AsyncReadforDecoderandSliceDecoder.Tries to share the maximum amount possible with
DecoderShared.If the code structure and general approach is OK, it would be easy to also add support for
futures::io::AsyncRead.Seek support is a bit more complex, so probably best done in a subsequent PR.