[−][src]Struct grpcio::MessageReader
MessageReader
is a zero-copy reader for the message payload.
To achieve zero-copy, use the BufRead API fill_buf
and consume
to operate the reader.
Methods
impl MessageReader
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pub fn pending_bytes_count(&self) -> usize
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Get the available bytes count of the reader.
Trait Implementations
impl Drop for MessageReader
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impl Sync for MessageReader
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impl Send for MessageReader
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impl Read for MessageReader
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fn read(&mut self, buf: &mut [u8]) -> Result<usize>
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fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
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default fn read_vectored(
&mut self,
bufs: &mut [IoVecMut]
) -> Result<usize, Error>
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&mut self,
bufs: &mut [IoVecMut]
) -> Result<usize, Error>
iovec
)Like read
, except that it reads into a slice of buffers. Read more
unsafe default fn initializer(&self) -> Initializer
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read_initializer
)Determines if this Read
er can work with buffers of uninitialized memory. Read more
default fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
Read all bytes until EOF in this source, appending them to buf
. Read more
default fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
1.6.0[src]
Read the exact number of bytes required to fill buf
. Read more
default fn by_ref(&mut self) -> &mut Self
1.0.0[src]
Creates a "by reference" adaptor for this instance of Read
. Read more
default fn bytes(self) -> Bytes<Self>
1.0.0[src]
Transforms this Read
instance to an [Iterator
] over its bytes. Read more
default fn chain<R>(self, next: R) -> Chain<Self, R> where
R: Read,
1.0.0[src]
R: Read,
Creates an adaptor which will chain this stream with another. Read more
default fn take(self, limit: u64) -> Take<Self>
1.0.0[src]
Creates an adaptor which will read at most limit
bytes from it. Read more
impl BufRead for MessageReader
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fn fill_buf(&mut self) -> Result<&[u8]>
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fn consume(&mut self, amt: usize)
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default fn read_until(
&mut self,
byte: u8,
buf: &mut Vec<u8>
) -> Result<usize, Error>
1.0.0[src]
&mut self,
byte: u8,
buf: &mut Vec<u8>
) -> Result<usize, Error>
Read all bytes into buf
until the delimiter byte
or EOF is reached. Read more
default fn read_line(&mut self, buf: &mut String) -> Result<usize, Error>
1.0.0[src]
Read all bytes until a newline (the 0xA byte) is reached, and append them to the provided buffer. Read more
default fn split(self, byte: u8) -> Split<Self>
1.0.0[src]
Returns an iterator over the contents of this reader split on the byte byte
. Read more
default fn lines(self) -> Lines<Self>
1.0.0[src]
Returns an iterator over the lines of this reader. Read more
impl Buf for MessageReader
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fn remaining(&self) -> usize
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fn bytes(&self) -> &[u8]
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fn advance(&mut self, cnt: usize)
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default fn bytes_vec(&'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
default fn has_remaining(&self) -> bool
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Returns true if there are any more bytes to consume Read more
default fn copy_to_slice(&mut self, dst: &mut [u8])
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Copies bytes from self
into dst
. Read more
default fn get_u8(&mut self) -> u8
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Gets an unsigned 8 bit integer from self
. Read more
default fn get_i8(&mut self) -> i8
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Gets a signed 8 bit integer from self
. Read more
default fn get_u16_be(&mut self) -> u16
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Gets an unsigned 16 bit integer from self
in big-endian byte order. Read more
default fn get_u16_le(&mut self) -> u16
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Gets an unsigned 16 bit integer from self
in little-endian byte order. Read more
default fn get_i16_be(&mut self) -> i16
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Gets a signed 16 bit integer from self
in big-endian byte order. Read more
default fn get_i16_le(&mut self) -> i16
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Gets a signed 16 bit integer from self
in little-endian byte order. Read more
default fn get_u32_be(&mut self) -> u32
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Gets an unsigned 32 bit integer from self
in the big-endian byte order. Read more
default fn get_u32_le(&mut self) -> u32
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Gets an unsigned 32 bit integer from self
in the little-endian byte order. Read more
default fn get_i32_be(&mut self) -> i32
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Gets a signed 32 bit integer from self
in big-endian byte order. Read more
default fn get_i32_le(&mut self) -> i32
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Gets a signed 32 bit integer from self
in little-endian byte order. Read more
default fn get_u64_be(&mut self) -> u64
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Gets an unsigned 64 bit integer from self
in big-endian byte order. Read more
default fn get_u64_le(&mut self) -> u64
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Gets an unsigned 64 bit integer from self
in little-endian byte order. Read more
default fn get_i64_be(&mut self) -> i64
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Gets a signed 64 bit integer from self
in big-endian byte order. Read more
default fn get_i64_le(&mut self) -> i64
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Gets a signed 64 bit integer from self
in little-endian byte order. Read more
default fn get_uint_be(&mut self, nbytes: usize) -> u64
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Gets an unsigned n-byte integer from self
in big-endian byte order. Read more
default fn get_uint_le(&mut self, nbytes: usize) -> u64
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Gets an unsigned n-byte integer from self
in little-endian byte order. Read more
default fn get_int_be(&mut self, nbytes: usize) -> i64
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Gets a signed n-byte integer from self
in big-endian byte order. Read more
default fn get_int_le(&mut self, nbytes: usize) -> i64
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Gets a signed n-byte integer from self
in little-endian byte order. Read more
default fn get_f32_be(&mut self) -> f32
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Gets an IEEE754 single-precision (4 bytes) floating point number from self
in big-endian byte order. Read more
default fn get_f32_le(&mut self) -> f32
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Gets an IEEE754 single-precision (4 bytes) floating point number from self
in little-endian byte order. Read more
default fn get_f64_be(&mut self) -> f64
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Gets an IEEE754 double-precision (8 bytes) floating point number from self
in big-endian byte order. Read more
default fn get_f64_le(&mut self) -> f64
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Gets an IEEE754 double-precision (8 bytes) floating point number from self
in little-endian byte order. Read more
default fn collect<B>(self) -> B where
B: FromBuf,
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B: FromBuf,
Transforms a Buf
into a concrete buffer. Read more
default fn take(self, limit: usize) -> Take<Self>
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Creates an adaptor which will read at most limit
bytes from self
. Read more
default fn chain<U>(self, next: U) -> Chain<Self, <U as IntoBuf>::Buf> where
U: IntoBuf,
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U: IntoBuf,
Creates an adaptor which will chain this buffer with another. Read more
default fn by_ref(&mut self) -> &mut Self
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Creates a "by reference" adaptor for this instance of Buf
. Read more
default fn reader(self) -> Reader<Self>
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Creates an adaptor which implements the Read
trait for self
. Read more
default fn iter(self) -> Iter<Self>
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Returns an iterator over the bytes contained by the buffer. Read more
Blanket Implementations
impl<T> From for T
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impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> IntoBuf for T where
T: Buf,
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T: Buf,
impl<R> ReadBytesExt for R where
R: Read + ?Sized,
R: Read + ?Sized,
default fn read_u8(&mut self) -> Result<u8, Error>
Reads an unsigned 8 bit integer from the underlying reader. Read more
default fn read_i8(&mut self) -> Result<i8, Error>
Reads a signed 8 bit integer from the underlying reader. Read more
default fn read_u16<T>(&mut self) -> Result<u16, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 16 bit integer from the underlying reader. Read more
default fn read_i16<T>(&mut self) -> Result<i16, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 16 bit integer from the underlying reader. Read more
default fn read_u24<T>(&mut self) -> Result<u32, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 24 bit integer from the underlying reader. Read more
default fn read_i24<T>(&mut self) -> Result<i32, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 24 bit integer from the underlying reader. Read more
default fn read_u32<T>(&mut self) -> Result<u32, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 32 bit integer from the underlying reader. Read more
default fn read_i32<T>(&mut self) -> Result<i32, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 32 bit integer from the underlying reader. Read more
default fn read_u48<T>(&mut self) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 48 bit integer from the underlying reader. Read more
default fn read_i48<T>(&mut self) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 48 bit integer from the underlying reader. Read more
default fn read_u64<T>(&mut self) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 64 bit integer from the underlying reader. Read more
default fn read_i64<T>(&mut self) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 64 bit integer from the underlying reader. Read more
default fn read_u128<T>(&mut self) -> Result<u128, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned 128 bit integer from the underlying reader. Read more
default fn read_i128<T>(&mut self) -> Result<i128, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed 128 bit integer from the underlying reader. Read more
default fn read_uint<T>(&mut self, nbytes: usize) -> Result<u64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned n-bytes integer from the underlying reader. Read more
default fn read_int<T>(&mut self, nbytes: usize) -> Result<i64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed n-bytes integer from the underlying reader. Read more
default fn read_uint128<T>(&mut self, nbytes: usize) -> Result<u128, Error> where
T: ByteOrder,
T: ByteOrder,
Reads an unsigned n-bytes integer from the underlying reader.
default fn read_int128<T>(&mut self, nbytes: usize) -> Result<i128, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a signed n-bytes integer from the underlying reader.
default fn read_f32<T>(&mut self) -> Result<f32, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a IEEE754 single-precision (4 bytes) floating point number from the underlying reader. Read more
default fn read_f64<T>(&mut self) -> Result<f64, Error> where
T: ByteOrder,
T: ByteOrder,
Reads a IEEE754 double-precision (8 bytes) floating point number from the underlying reader. Read more
default fn read_u16_into<T>(&mut self, dst: &mut [u16]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of unsigned 16 bit integers from the underlying reader. Read more
default fn read_u32_into<T>(&mut self, dst: &mut [u32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of unsigned 32 bit integers from the underlying reader. Read more
default fn read_u64_into<T>(&mut self, dst: &mut [u64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of unsigned 64 bit integers from the underlying reader. Read more
default fn read_u128_into<T>(&mut self, dst: &mut [u128]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of unsigned 128 bit integers from the underlying reader. Read more
default fn read_i16_into<T>(&mut self, dst: &mut [i16]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of signed 16 bit integers from the underlying reader. Read more
default fn read_i32_into<T>(&mut self, dst: &mut [i32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of signed 32 bit integers from the underlying reader. Read more
default fn read_i64_into<T>(&mut self, dst: &mut [i64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of signed 64 bit integers from the underlying reader. Read more
default fn read_i128_into<T>(&mut self, dst: &mut [i128]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of signed 128 bit integers from the underlying reader. Read more
default fn read_f32_into<T>(&mut self, dst: &mut [f32]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of IEEE754 single-precision (4 bytes) floating point numbers from the underlying reader. Read more
default fn read_f32_into_unchecked<T>(
&mut self,
dst: &mut [f32]
) -> Result<(), Error> where
T: ByteOrder,
&mut self,
dst: &mut [f32]
) -> Result<(), Error> where
T: ByteOrder,
please use read_f32_into
instead
DEPRECATED. Read more
default fn read_f64_into<T>(&mut self, dst: &mut [f64]) -> Result<(), Error> where
T: ByteOrder,
T: ByteOrder,
Reads a sequence of IEEE754 double-precision (8 bytes) floating point numbers from the underlying reader. Read more
default fn read_f64_into_unchecked<T>(
&mut self,
dst: &mut [f64]
) -> Result<(), Error> where
T: ByteOrder,
&mut self,
dst: &mut [f64]
) -> Result<(), Error> where
T: ByteOrder,
please use read_f64_into
instead
DEPRECATED. Read more