pub fn decode_drawing_stream<In: Unpin+Stream<Item=Result<char, E>>, E>(source: In) -> impl Unpin+Stream<Item=Result<Draw, StreamDecoderError<E>>> {
    let mut source      = source;
    let mut decoder     = CanvasDecoder::new();
    let mut seen_error  = false;

    stream::poll_fn(move |context| {
        if seen_error {
            // Only allow one error from the decoder (it remains in an error state after this)
            Poll::Ready(None)
        } else {
            loop {
                match source.poll_next_unpin(context) {
                    Poll::Ready(None)           => { return Poll::Ready(None); },
                    Poll::Pending               => { return Poll::Pending; },
                    Poll::Ready(Some(Ok(c)))    => {
                        match decoder.decode(c) {
                            Ok(None)            => { continue; },
                            Ok(Some(draw))      => { return Poll::Ready(Some(Ok(draw))); },
                            Err(err)            => { seen_error = true; return Poll::Ready(Some(Err(StreamDecoderError::Decoder(err)))); }
                        }
                    },

                    Poll::Ready(Some(Err(err))) => { return Poll::Ready(Some(Err(StreamDecoderError::Stream(err)))); }
                }
            }
        }
    })
}
///
/// Decodes a canvas drawing represented as a stream of characters.
///
Decodes a canvas drawing represented as a stream of characters.
Decodes a canvas drawing represented as a stream of characters .
pub fn decode_drawing_stream<In: Unpin+Stream<Item=Result<char, E>>, E>(source: In) -> impl Unpin+Stream<Item=Result<Draw, StreamDecoderError<E>>> {
    let mut source      = source;
    let mut decoder     = CanvasDecoder::new();
    let mut seen_error  = false;
    stream::poll_fn(move |context| {
        if seen_error {
            // Only allow one error from the decoder (it remains in an error state after this)
            Poll::Ready(None)
        } else {
            loop {
                match source.poll_next_unpin(context) {
                    Poll::Ready(None)           => { return Poll::Ready(None); },
                    Poll::Pending               => { return Poll::Pending; },
                    Poll::Ready(Some(Ok(c)))    => {
                        match decoder.decode(c) {
                            Ok(None)            => { continue; },
                            Ok(Some(draw))      => { return Poll::Ready(Some(Ok(draw))); },
                            Err(err)            => { seen_error = true; return Poll::Ready(Some(Err(StreamDecoderError::Decoder(err)))); }
                        }
                    },
                    Poll::Ready(Some(Err(err))) => { return Poll::Ready(Some(Err(StreamDecoderError::Stream(err)))); }
                }
            }
        }
    })
}
pub fn decode_drawing_stream < In : Unpin + Stream < Item = Result < char , E > > , E > ( source : In ) -> impl Unpin + Stream < Item = Result < Draw , StreamDecoderError < E > > > { let mut source = source ; let mut decoder = CanvasDecoder :: new ( ) ; let mut seen_error = false ; stream :: poll_fn ( move | context | { if seen_error { // Only allow one error from the decoder (it remains in an error state after this) Poll :: Ready ( None ) } else { loop { match source . poll_next_unpin ( context ) { Poll :: Ready ( None ) => { return Poll :: Ready ( None ) ; } , Poll :: Pending => { return Poll :: Pending ; } , Poll :: Ready ( Some ( Ok ( c ) ) ) => { match decoder . decode ( c ) { Ok ( None ) => { continue ; } , Ok ( Some ( draw ) ) => { return Poll :: Ready ( Some ( Ok ( draw ) ) ) ; } , Err ( err ) => { seen_error = true ; return Poll :: Ready ( Some ( Err ( StreamDecoderError :: Decoder ( err ) ) ) ) ; } } } , Poll :: Ready ( Some ( Err ( err ) ) ) => { return Poll :: Ready ( Some ( Err ( StreamDecoderError :: Stream ( err ) ) ) ) ; } } } } } ) }
Decodes a canvas drawing represented as a stream of characters.
Decodes a canvas drawing represented as a stream of characters .
source
In