Struct Empty

pub struct Empty { /* private fields */ }

A reader that contains no data.

This reader is created by the empty function. See its documentation for more.

Trait Implementations

impl BufRead for Empty

fn poll_fill_buf<'a>( self: Pin<&'a mut Self>, _: &mut Context<'_>, ) -> Poll<Result<&'a [u8]>>

Returns the contents of the internal buffer, filling it with more data from the inner reader if it is empty.

fn consume(self: Pin<&mut Self>, _: usize)

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to read.

fn read_until<'a>( &'a mut self, byte: u8, buf: &'a mut Vec<u8>, ) -> ImplFuture<usize>

where Self: Unpin,

Reads all bytes into buf until the delimiter byte or EOF is reached.

fn read_line<'a>(&'a mut self, buf: &'a mut String) -> ImplFuture<Result<usize>>

where Self: Unpin,

Reads all bytes and appends them into buf until a newline (the 0xA byte) is reached.

fn lines(self) -> Lines<Self>

where Self: Unpin + Sized,

Returns a stream over the lines of this byte stream.

fn split(self, byte: u8) -> Split<Self>

where Self: Sized,

Returns a stream over the contents of this reader split on the byte byte.

impl Debug for Empty

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Read for Empty

fn poll_read( self: Pin<&mut Self>, _: &mut Context<'_>, _: &mut [u8], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into buf.

fn poll_read_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &mut [IoSliceMut<'_>], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into bufs using vectored IO operations.

fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> ImplFuture<Result<usize>>

where Self: Unpin,

Reads some bytes from the byte stream.

fn read_vectored<'a>( &'a mut self, bufs: &'a mut [IoSliceMut<'a>], ) -> ImplFuture<Result<usize>>

where Self: Unpin,

Like read, except that it reads into a slice of buffers.

fn read_to_end<'a>( &'a mut self, buf: &'a mut Vec<u8>, ) -> ImplFuture<Result<usize>>

where Self: Unpin,

Reads all bytes from the byte stream.

fn read_to_string<'a>( &'a mut self, buf: &'a mut String, ) -> ImplFuture<Result<usize>>

where Self: Unpin,

Reads all bytes from the byte stream and appends them into a string.

fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ImplFuture<Result<()>>

where Self: Unpin,

Reads the exact number of bytes required to fill buf.

fn take(self, limit: u64) -> Take<Self>

where Self: Sized,

Creates an adaptor which will read at most limit bytes from it.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this Read instance to a Stream over its bytes.

fn chain<R: Read>(self, next: R) -> Chain<Self, R>

where Self: Sized,

Creates an adaptor which will chain this stream with another.