tokio::io

Struct Take

Source 
pub struct Take<R> { /* private fields */ }
Expand description

Stream for the take method.

Implementations§

Source§

impl<R: AsyncRead> Take<R>

Source

pub fn limit(&self) -> u64

Returns the remaining number of bytes that can be read before this instance will return EOF.

§Note

This instance may reach EOF after reading fewer bytes than indicated by this method if the underlying AsyncRead instance reaches EOF.

Source

pub fn set_limit(&mut self, limit: u64)

Sets the number of bytes that can be read before this instance will return EOF. This is the same as constructing a new Take instance, so the amount of bytes read and the previous limit value don’t matter when calling this method.

Source

pub fn get_ref(&self) -> &R

Gets a reference to the underlying reader.

Source

pub fn get_mut(&mut self) -> &mut R

Gets a mutable reference to the underlying reader.

Care should be taken to avoid modifying the internal I/O state of the underlying reader as doing so may corrupt the internal limit of this Take.

Source

pub fn get_pin_mut(self: Pin<&mut Self>) -> Pin<&mut R>

Gets a pinned mutable reference to the underlying reader.

Care should be taken to avoid modifying the internal I/O state of the underlying reader as doing so may corrupt the internal limit of this Take.

Source

pub fn into_inner(self) -> R

Consumes the Take, returning the wrapped reader.

Trait Implementations§

Source§

impl<R: AsyncBufRead> AsyncBufRead for Take<R>

Source§

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

Attempts to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty. Read more
Source§

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

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to poll_read. Read more
Source§

impl<R: AsyncRead> AsyncRead for Take<R>

Source§

fn poll_read( self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>, ) -> Poll<Result<(), Error>>

Attempts to read from the AsyncRead into buf. Read more
Source§

impl<R: Debug> Debug for Take<R>

Source§

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

Formats the value using the given formatter. Read more
Source§

impl<'__pin, R> Unpin for Take<R>
where PinnedFieldsOf<__Origin<'__pin, R>>: Unpin,

Auto Trait Implementations§

§

impl<R> Freeze for Take<R>
where R: Freeze,

§

impl<R> RefUnwindSafe for Take<R>
where R: RefUnwindSafe,

§

impl<R> Send for Take<R>
where R: Send,

§

impl<R> Sync for Take<R>
where R: Sync,

§

impl<R> UnwindSafe for Take<R>
where R: UnwindSafe,

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<R> AsyncBufReadExt for R
where R: AsyncBufRead + ?Sized,

Source§

fn read_until<'a>( &'a mut self, byte: u8, buf: &'a mut Vec<u8>, ) -> ReadUntil<'a, Self>
where Self: Unpin,

Reads all bytes into buf until the delimiter byte or EOF is reached. Read more
Source§

fn read_line<'a>(&'a mut self, buf: &'a mut String) -> ReadLine<'a, Self>
where Self: Unpin,

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

fn split(self, byte: u8) -> Split<Self>
where Self: Sized + Unpin,

Returns a stream of the contents of this reader split on the byte byte. Read more
Source§

fn fill_buf(&mut self) -> FillBuf<'_, Self>
where Self: Unpin,

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

fn consume(&mut self, amt: usize)
where Self: Unpin,

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

fn lines(self) -> Lines<Self>
where Self: Sized,

Returns a stream over the lines of this reader. This method is the async equivalent to BufRead::lines. Read more
Source§

impl<R> AsyncReadExt for R
where R: AsyncRead + ?Sized,

Source§

fn chain<R>(self, next: R) -> Chain<Self, R>
where Self: Sized, R: AsyncRead,

Creates a new AsyncRead instance that chains this stream with next. Read more
Source§

fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>
where Self: Unpin,

Pulls some bytes from this source into the specified buffer, returning how many bytes were read. Read more
Source§

fn read_buf<'a, B>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B>
where Self: Unpin, B: BufMut + ?Sized,

Pulls some bytes from this source into the specified buffer, advancing the buffer’s internal cursor. Read more
Source§

fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>
where Self: Unpin,

Reads the exact number of bytes required to fill buf. Read more
Source§

fn read_u8(&mut self) -> ReadU8<&mut Self>
where Self: Unpin,

Reads an unsigned 8 bit integer from the underlying reader. Read more
Source§

fn read_i8(&mut self) -> ReadI8<&mut Self>
where Self: Unpin,

Reads a signed 8 bit integer from the underlying reader. Read more
Source§

fn read_u16(&mut self) -> ReadU16<&mut Self>
where Self: Unpin,

Reads an unsigned 16-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_i16(&mut self) -> ReadI16<&mut Self>
where Self: Unpin,

Reads a signed 16-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_u32(&mut self) -> ReadU32<&mut Self>
where Self: Unpin,

Reads an unsigned 32-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_i32(&mut self) -> ReadI32<&mut Self>
where Self: Unpin,

Reads a signed 32-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_u64(&mut self) -> ReadU64<&mut Self>
where Self: Unpin,

Reads an unsigned 64-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_i64(&mut self) -> ReadI64<&mut Self>
where Self: Unpin,

Reads an signed 64-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_u128(&mut self) -> ReadU128<&mut Self>
where Self: Unpin,

Reads an unsigned 128-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_i128(&mut self) -> ReadI128<&mut Self>
where Self: Unpin,

Reads an signed 128-bit integer in big-endian order from the underlying reader. Read more
Source§

fn read_f32(&mut self) -> ReadF32<&mut Self>
where Self: Unpin,

Reads an 32-bit floating point type in big-endian order from the underlying reader. Read more
Source§

fn read_f64(&mut self) -> ReadF64<&mut Self>
where Self: Unpin,

Reads an 64-bit floating point type in big-endian order from the underlying reader. Read more
Source§

fn read_u16_le(&mut self) -> ReadU16Le<&mut Self>
where Self: Unpin,

Reads an unsigned 16-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_i16_le(&mut self) -> ReadI16Le<&mut Self>
where Self: Unpin,

Reads a signed 16-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_u32_le(&mut self) -> ReadU32Le<&mut Self>
where Self: Unpin,

Reads an unsigned 32-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_i32_le(&mut self) -> ReadI32Le<&mut Self>
where Self: Unpin,

Reads a signed 32-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_u64_le(&mut self) -> ReadU64Le<&mut Self>
where Self: Unpin,

Reads an unsigned 64-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_i64_le(&mut self) -> ReadI64Le<&mut Self>
where Self: Unpin,

Reads an signed 64-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_u128_le(&mut self) -> ReadU128Le<&mut Self>
where Self: Unpin,

Reads an unsigned 128-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_i128_le(&mut self) -> ReadI128Le<&mut Self>
where Self: Unpin,

Reads an signed 128-bit integer in little-endian order from the underlying reader. Read more
Source§

fn read_f32_le(&mut self) -> ReadF32Le<&mut Self>
where Self: Unpin,

Reads an 32-bit floating point type in little-endian order from the underlying reader. Read more
Source§

fn read_f64_le(&mut self) -> ReadF64Le<&mut Self>
where Self: Unpin,

Reads an 64-bit floating point type in little-endian order from the underlying reader. Read more
Source§

fn read_to_end<'a>(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEnd<'a, Self>
where Self: Unpin,

Reads all bytes until EOF in this source, placing them into buf. Read more
Source§

fn read_to_string<'a>( &'a mut self, dst: &'a mut String, ) -> ReadToString<'a, Self>
where Self: Unpin,

Reads all bytes until EOF in this source, appending them to buf. Read more
Source§

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

Creates an adaptor which reads at most limit bytes from it. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.