Could easyjson support read/write from/to Reader/Writer other than []byte?

[fzh890523]

Like:
StreamUnmarshalJSON(reader io.Reader)
StreamMarshalJSON(reader io.Writer)

It may bring significant performance improvement while impl deserialize streamingly.

Thanks.

[shmel1k]

Yeah, we thought about it a long time ago

But did not have time to do it :(

[makarchuk]

I'm particularly interested in Writer and wanted to discuss the intended solution.

How would you feel about adding additional io.Writer parameter Sink to buffer.Buffer. If Sink is present, every time when allocating a new buffer we will flush the old one to Sink. But this can cause an error, so presumably just like JWriter, Buffer would need to store Error state and fail all writing operations with noop if Flush error occurred at some point in the past.
We'd also need an additional Flush method on buffer.Buffer, to flush final chunk into Sink.

I tried replacing buffer with io.Writer altogether, but it forces way too many allocations on JWriter, to interact with it.