Struct bytes::buf::Chain
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pub struct Chain<T, U> { /* fields omitted */ }
A Chain
sequences two buffers.
Chain
is an adapter that links two underlying buffers and provides a
continous view across both buffers. It is able to sequence either immutable
buffers (Buf
values) or mutable buffers (BufMut
values).
This struct is generally created by calling Buf::chain
. Please see that
function's documentation for more detail.
Examples
use bytes::{Bytes, Buf, IntoBuf}; use bytes::buf::Chain; let buf = Bytes::from(&b"hello "[..]).into_buf() .chain(Bytes::from(&b"world"[..])); let full: Bytes = buf.collect(); assert_eq!(full[..], b"hello world"[..]);
Methods
impl<T, U> Chain<T, U>
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fn new(a: T, b: U) -> Chain<T, U>
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Creates a new Chain
sequencing the provided values.
Examples
use bytes::BytesMut; use bytes::buf::Chain; let buf = Chain::new( BytesMut::with_capacity(1024), BytesMut::with_capacity(1024)); // Use the chained buffer
fn first_ref(&self) -> &T
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Gets a reference to the first underlying Buf
.
Examples
use bytes::{Bytes, Buf, IntoBuf}; let buf = Bytes::from(&b"hello"[..]).into_buf() .chain(Bytes::from(&b"world"[..])); assert_eq!(buf.first_ref().get_ref()[..], b"hello"[..]);
fn first_mut(&mut self) -> &mut T
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Gets a mutable reference to the first underlying Buf
.
Examples
use bytes::{Bytes, Buf, IntoBuf}; let mut buf = Bytes::from(&b"hello "[..]).into_buf() .chain(Bytes::from(&b"world"[..])); buf.first_mut().set_position(1); let full: Bytes = buf.collect(); assert_eq!(full[..], b"ello world"[..]);
fn last_ref(&self) -> &U
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Gets a reference to the last underlying Buf
.
Examples
use bytes::{Bytes, Buf, IntoBuf}; let buf = Bytes::from(&b"hello"[..]).into_buf() .chain(Bytes::from(&b"world"[..])); assert_eq!(buf.last_ref().get_ref()[..], b"world"[..]);
fn last_mut(&mut self) -> &mut U
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Gets a mutable reference to the last underlying Buf
.
Examples
use bytes::{Bytes, Buf, IntoBuf}; let mut buf = Bytes::from(&b"hello "[..]).into_buf() .chain(Bytes::from(&b"world"[..])); buf.last_mut().set_position(1); let full: Bytes = buf.collect(); assert_eq!(full[..], b"hello orld"[..]);
fn into_inner(self) -> (T, U)
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Consumes this Chain
, returning the underlying values.
Examples
use bytes::{Bytes, Buf, IntoBuf}; let buf = Bytes::from(&b"hello"[..]).into_buf() .chain(Bytes::from(&b"world"[..])); let (first, last) = buf.into_inner(); assert_eq!(first.get_ref()[..], b"hello"[..]); assert_eq!(last.get_ref()[..], b"world"[..]);
Trait Implementations
impl<T: Debug, U: Debug> Debug for Chain<T, U>
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impl<T, U> Buf for Chain<T, U> where
T: Buf,
U: Buf,
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T: Buf,
U: Buf,
fn remaining(&self) -> usize
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Returns the number of bytes between the current position and the end of the buffer. Read more
fn bytes(&self) -> &[u8]
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Returns a slice starting at the current position and of length between 0 and Buf::remaining()
. Read more
fn advance(&mut self, cnt: usize)
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Advance the internal cursor of the Buf Read more
fn bytes_vec<'a>(&'a self, dst: &mut [&'a IoVec]) -> usize
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Fills dst
with potentially multiple slices starting at self
's current position. Read more
fn has_remaining(&self) -> bool
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Returns true if there are any more bytes to consume Read more
fn copy_to_slice(&mut self, dst: &mut [u8])
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Copies bytes from self
into dst
. Read more
fn get_u8(&mut self) -> u8
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Gets an unsigned 8 bit integer from self
. Read more
fn get_i8(&mut self) -> i8
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Gets a signed 8 bit integer from self
. Read more
fn get_u16<T: ByteOrder>(&mut self) -> u16
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Gets an unsigned 16 bit integer from self
in the specified byte order. Read more
fn get_i16<T: ByteOrder>(&mut self) -> i16
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Gets a signed 16 bit integer from self
in the specified byte order. Read more
fn get_u32<T: ByteOrder>(&mut self) -> u32
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Gets an unsigned 32 bit integer from self
in the specified byte order. Read more
fn get_i32<T: ByteOrder>(&mut self) -> i32
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Gets a signed 32 bit integer from self
in the specified byte order. Read more
fn get_u64<T: ByteOrder>(&mut self) -> u64
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Gets an unsigned 64 bit integer from self
in the specified byte order. Read more
fn get_i64<T: ByteOrder>(&mut self) -> i64
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Gets a signed 64 bit integer from self
in the specified byte order. Read more
fn get_uint<T: ByteOrder>(&mut self, nbytes: usize) -> u64
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Gets an unsigned n-byte integer from self
in the specified byte order. Read more
fn get_int<T: ByteOrder>(&mut self, nbytes: usize) -> i64
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Gets a signed n-byte integer from self
in the specified byte order. Read more
fn get_f32<T: ByteOrder>(&mut self) -> f32
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Gets an IEEE754 single-precision (4 bytes) floating point number from self
in the specified byte order. Read more
fn get_f64<T: ByteOrder>(&mut self) -> f64
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Gets an IEEE754 double-precision (8 bytes) floating point number from self
in the specified byte order. Read more
fn collect<B>(self) -> B where
Self: Sized,
B: FromBuf,
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Self: Sized,
B: FromBuf,
Transforms a Buf
into a concrete buffer. Read more
fn take(self, limit: usize) -> Take<Self> where
Self: Sized,
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Self: Sized,
Creates an adaptor which will read at most limit
bytes from self
. Read more
fn chain<U>(self, next: U) -> Chain<Self, U::Buf> where
U: IntoBuf,
Self: Sized,
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U: IntoBuf,
Self: Sized,
Creates an adaptor which will chain this buffer with another. Read more
fn by_ref(&mut self) -> &mut Self where
Self: Sized,
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Self: Sized,
Creates a "by reference" adaptor for this instance of Buf
. Read more
fn reader(self) -> Reader<Self> where
Self: Sized,
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Self: Sized,
Creates an adaptor which implements the Read
trait for self
. Read more
fn iter(self) -> Iter<Self> where
Self: Sized,
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Self: Sized,
Returns an iterator over the bytes contained by the buffer. Read more
impl<T, U> BufMut for Chain<T, U> where
T: BufMut,
U: BufMut,
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T: BufMut,
U: BufMut,
fn remaining_mut(&self) -> usize
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Returns the number of bytes that can be written from the current position until the end of the buffer is reached. Read more
unsafe fn bytes_mut(&mut self) -> &mut [u8]
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Returns a mutable slice starting at the current BufMut position and of length between 0 and BufMut::remaining_mut()
. Read more
unsafe fn advance_mut(&mut self, cnt: usize)
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Advance the internal cursor of the BufMut Read more
unsafe fn bytes_vec_mut<'a>(&'a mut self, dst: &mut [&'a mut IoVec]) -> usize
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Fills dst
with potentially multiple mutable slices starting at self
's current position. Read more
fn has_remaining_mut(&self) -> bool
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Returns true if there is space in self
for more bytes. Read more
fn put<T: IntoBuf>(&mut self, src: T) where
Self: Sized,
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Self: Sized,
Transfer bytes into self
from src
and advance the cursor by the number of bytes written. Read more
fn put_slice(&mut self, src: &[u8])
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Transfer bytes into self
from src
and advance the cursor by the number of bytes written. Read more
fn put_u8(&mut self, n: u8)
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Writes an unsigned 8 bit integer to self
. Read more
fn put_i8(&mut self, n: i8)
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Writes a signed 8 bit integer to self
. Read more
fn put_u16<T: ByteOrder>(&mut self, n: u16)
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Writes an unsigned 16 bit integer to self
in the specified byte order. Read more
fn put_i16<T: ByteOrder>(&mut self, n: i16)
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Writes a signed 16 bit integer to self
in the specified byte order. Read more
fn put_u32<T: ByteOrder>(&mut self, n: u32)
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Writes an unsigned 32 bit integer to self
in the specified byte order. Read more
fn put_i32<T: ByteOrder>(&mut self, n: i32)
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Writes a signed 32 bit integer to self
in the specified byte order. Read more
fn put_u64<T: ByteOrder>(&mut self, n: u64)
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Writes an unsigned 64 bit integer to self
in the specified byte order. Read more
fn put_i64<T: ByteOrder>(&mut self, n: i64)
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Writes a signed 64 bit integer to self
in the specified byte order. Read more
fn put_uint<T: ByteOrder>(&mut self, n: u64, nbytes: usize)
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Writes an unsigned n-byte integer to self
in the specified byte order. Read more
fn put_int<T: ByteOrder>(&mut self, n: i64, nbytes: usize)
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Writes a signed n-byte integer to self
in the specified byte order. Read more
fn put_f32<T: ByteOrder>(&mut self, n: f32)
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Writes an IEEE754 single-precision (4 bytes) floating point number to self
in the specified byte order. Read more
fn put_f64<T: ByteOrder>(&mut self, n: f64)
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Writes an IEEE754 double-precision (8 bytes) floating point number to self
in the specified byte order. Read more
fn by_ref(&mut self) -> &mut Self where
Self: Sized,
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Self: Sized,
Creates a "by reference" adaptor for this instance of BufMut
. Read more
fn writer(self) -> Writer<Self> where
Self: Sized,
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Self: Sized,
Creates an adaptor which implements the Write
trait for self
. Read more