Struct borsh::maybestd::io::Empty

[+] Show declaration

pub struct Empty { /* fields omitted */ }

[−] Expand description

A reader which is always at EOF.

This struct is generally created by calling empty(). Please see the documentation of empty() for more details.

Trait Implementations

impl BufRead for Empty[+]

[+] Show hidden undocumented items

pub fn fill_buf(&mut self) -> Result<&[u8], Error>[−]

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

pub fn consume(&mut self, _n: usize)[−]

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

pub fn read_until(
    &mut self,
    byte: u8,
    buf: &mut Vec<u8, Global>
) -> Result<usize, Error>[−]

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

pub fn read_line(&mut self, buf: &mut String) -> Result<usize, Error>[−]

Read all bytes until a newline (the 0xA byte) is reached, and append them to the provided buffer.

pub fn split(self, byte: u8) -> Split<Self>[−]

Returns an iterator over the contents of this reader split on the byte byte.

pub fn lines(self) -> Lines<Self>[−]

Returns an iterator over the lines of this reader.

impl Debug for Empty[+]

[+] Show hidden undocumented items

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[−]

Formats the value using the given formatter.

impl Read for Empty[+]

[+] Show hidden undocumented items

pub fn read(&mut self, _buf: &mut [u8]) -> Result<usize, Error>[−]

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

pub unsafe fn initializer(&self) -> Initializer[−]

🔬 This is a nightly-only experimental API. (read_initializer)

Determines if this Reader can work with buffers of uninitialized memory.

pub fn read_vectored(
    &mut self,
    bufs: &mut [IoSliceMut<'_>]
) -> Result<usize, Error>[−]

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

pub fn is_read_vectored(&self) -> bool[−]

🔬 This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

pub fn read_to_end(&mut self, buf: &mut Vec<u8, Global>) -> Result<usize, Error>[−]

Read all bytes until EOF in this source, placing them into buf.

pub fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>[−]

Read all bytes until EOF in this source, appending them to buf.

pub fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>[−]

Read the exact number of bytes required to fill buf.

pub fn by_ref(&mut self) -> &mut Self[−]

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

pub fn bytes(self) -> Bytes<Self>[−]

Transforms this Read instance to an Iterator over its bytes.

pub fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, [−]

Creates an adaptor which will chain this stream with another.

pub fn take(self, limit: u64) -> Take<Self>[−]

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

impl Seek for Empty[+]

[+] Show hidden undocumented items

pub fn seek(&mut self, _pos: SeekFrom) -> Result<u64, Error>[−]

Seek to an offset, in bytes, in a stream.

pub fn stream_len(&mut self) -> Result<u64, Error>[−]

🔬 This is a nightly-only experimental API. (seek_stream_len)

Returns the length of this stream (in bytes).

pub fn stream_position(&mut self) -> Result<u64, Error>[−]

Returns the current seek position from the start of the stream.