[−][src]Struct futures_util::io::AllowStdIo

pub struct AllowStdIo<T>(_);
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A simple wrapper type which allows types which implement only implement std::io::Read or std::io::Write to be used in contexts which expect an AsyncRead or AsyncWrite.

If these types issue an error with the kind io::ErrorKind::WouldBlock, it is expected that they will notify the current task on readiness. Synchronous std types should not issue errors of this kind and are safe to use in this context. However, using these types with AllowStdIo will cause the event loop to block, so they should be used with care.

Methods

impl<T> AllowStdIo<T>
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pub fn new(io: T) -> Self
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Creates a new AllowStdIo from an existing IO object.

ⓘImportant traits for &'_ mut I
pub fn get_ref(&self) -> &T
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Returns a reference to the contained IO object.

ⓘImportant traits for &'_ mut I
pub fn get_mut(&mut self) -> &mut T
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Returns a mutable reference to the contained IO object.

pub fn into_inner(self) -> T
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Consumes self and returns the contained IO object.

Trait Implementations

impl<T: Copy> Copy for AllowStdIo<T>
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impl<T: PartialOrd> PartialOrd<AllowStdIo<T>> for AllowStdIo<T>
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impl<T: PartialEq> PartialEq<AllowStdIo<T>> for AllowStdIo<T>
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impl<T: Clone> Clone for AllowStdIo<T>
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fn clone_from(&mut self, source: &Self)
1.0.0
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Performs copy-assignment from source. Read more

impl<T: Ord> Ord for AllowStdIo<T>
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fn max(self, other: Self) -> Self
1.21.0
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Compares and returns the maximum of two values. Read more

fn min(self, other: Self) -> Self
1.21.0
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Compares and returns the minimum of two values. Read more

impl<T: Eq> Eq for AllowStdIo<T>
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impl<T: Hash> Hash for AllowStdIo<T>
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fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 
1.3.0
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Feeds a slice of this type into the given [Hasher]. Read more

impl<T: Debug> Debug for AllowStdIo<T>
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impl<T> Write for AllowStdIo<T> where
    T: Write, 
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ⓘImportant traits for &'_ mut I
fn by_ref(&mut self) -> &mut Self
1.0.0
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Creates a "by reference" adaptor for this instance of Write. Read more

impl<T> Read for AllowStdIo<T> where
    T: Read, 
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unsafe fn initializer(&self) -> Initializer
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🔬 This is a nightly-only experimental API. (read_initializer)

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

ⓘImportant traits for &'_ mut I
fn by_ref(&mut self) -> &mut Self
1.0.0
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Creates a "by reference" adaptor for this instance of Read. Read more

ⓘImportant traits for Bytes<R>
fn bytes(self) -> Bytes<Self>
1.0.0
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Transforms this Read instance to an [Iterator] over its bytes. Read more

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 
1.0.0
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Creates an adaptor which will chain this stream with another. Read more

fn take(self, limit: u64) -> Take<Self>
1.0.0
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Creates an adaptor which will read at most limit bytes from it. Read more

impl<T> AsyncRead for AllowStdIo<T> where
    T: Read, 
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unsafe fn initializer(&self) -> Initializer
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Determines if this AsyncReader can work with buffers of uninitialized memory. Read more

fn poll_vectored_read(
    &mut self,
    lw: &LocalWaker,
    vec: &mut [&mut IoVec]
) -> Poll<Result<usize, Error>>
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Attempt to read from the AsyncRead into vec using vectored IO operations. Read more

impl<T> AsyncWrite for AllowStdIo<T> where
    T: Write, 
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fn poll_vectored_write(
    &mut self,
    lw: &LocalWaker,
    vec: &[&IoVec]
) -> Poll<Result<usize, Error>>
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Attempt to write bytes from vec into the object using vectored IO operations. Read more

Auto Trait Implementations

impl<T> Send for AllowStdIo<T> where
    T: Send, 

impl<T> Sync for AllowStdIo<T> where
    T: Sync, 

Blanket Implementations

impl<R> AsyncReadExt for R where
    R: AsyncRead + ?Sized, 
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fn copy_into<'a, W>(&'a mut self, writer: &'a mut W) -> CopyInto<'a, Self, W> where
    W: AsyncWrite, 
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Creates a future which copies all the bytes from one object to another. Read more

fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>
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Tries to read some bytes directly into the given buf in asynchronous manner, returning a future type. Read more

fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>
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Creates a future which will read exactly enough bytes to fill buf, returning an error if end of file (EOF) is hit sooner. Read more

fn read_to_end<'a>(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEnd<'a, Self>
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Creates a future which will read all the bytes from this AsyncRead. Read more

fn split(self) -> (ReadHalf<Self>, WriteHalf<Self>) where
    Self: AsyncWrite + Sized, 
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Helper method for splitting this read/write object into two halves. Read more

ⓘImportant traits for Compat<W>
fn compat(self) -> Compat<Self> where
    Self: Sized, 
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Wraps an AsyncRead in a compatibility wrapper that allows it to be used as a futures 0.1 / tokio-io 0.1 AsyncRead. If the wrapped type implements AsyncWrite as well, the result will also implement the futures 0.1 / tokio 0.1 AsyncWrite trait. Read more

impl<W> AsyncWriteExt for W where
    W: AsyncWrite + ?Sized, 
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fn flush(&mut self) -> Flush<Self>
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Creates a future which will entirely flush this AsyncWrite. Read more

fn close(&mut self) -> Close<Self>
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Creates a future which will entirely close this AsyncWrite.

fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAll<'a, Self>
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Write data into this object. Read more

ⓘImportant traits for Compat<W>
fn compat_write(self) -> Compat<Self> where
    Self: Sized, 
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Wraps an AsyncWrite in a compatibility wrapper that allows it to be used as a futures 0.1 / tokio-io 0.1 AsyncWrite. Requires the io-compat feature to enable. Read more

impl<T> ToOwned for T where
    T: Clone, 
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type Owned = T

impl<T> From for T
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impl<T, U> Into for T where
    U: From<T>, 
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impl<T, U> TryFrom for T where
    T: From<U>, 
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type Error = !

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

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized, 
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impl<T> Any for T where
    T: 'static + ?Sized, 
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impl<T> BorrowMut for T where
    T: ?Sized, 
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

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

The type returned in the event of a conversion error.

impl<R> ReadBytesExt for R where
    R: Read + ?Sized, 
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fn read_u8(&mut self) -> Result<u8, Error>
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Reads an unsigned 8 bit integer from the underlying reader. Read more

fn read_i8(&mut self) -> Result<i8, Error>
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Reads a signed 8 bit integer from the underlying reader. Read more

fn read_u16<T>(&mut self) -> Result<u16, Error> where
    T: ByteOrder, 
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Reads an unsigned 16 bit integer from the underlying reader. Read more

fn read_i16<T>(&mut self) -> Result<i16, Error> where
    T: ByteOrder, 
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Reads a signed 16 bit integer from the underlying reader. Read more

fn read_u24<T>(&mut self) -> Result<u32, Error> where
    T: ByteOrder, 
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Reads an unsigned 24 bit integer from the underlying reader. Read more

fn read_i24<T>(&mut self) -> Result<i32, Error> where
    T: ByteOrder, 
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Reads a signed 24 bit integer from the underlying reader. Read more

fn read_u32<T>(&mut self) -> Result<u32, Error> where
    T: ByteOrder, 
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Reads an unsigned 32 bit integer from the underlying reader. Read more

fn read_i32<T>(&mut self) -> Result<i32, Error> where
    T: ByteOrder, 
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Reads a signed 32 bit integer from the underlying reader. Read more

fn read_u48<T>(&mut self) -> Result<u64, Error> where
    T: ByteOrder, 
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Reads an unsigned 48 bit integer from the underlying reader. Read more

fn read_i48<T>(&mut self) -> Result<i64, Error> where
    T: ByteOrder, 
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Reads a signed 48 bit integer from the underlying reader. Read more

fn read_u64<T>(&mut self) -> Result<u64, Error> where
    T: ByteOrder, 
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Reads an unsigned 64 bit integer from the underlying reader. Read more

fn read_i64<T>(&mut self) -> Result<i64, Error> where
    T: ByteOrder, 
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Reads a signed 64 bit integer from the underlying reader. Read more

fn read_uint<T>(&mut self, nbytes: usize) -> Result<u64, Error> where
    T: ByteOrder, 
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Reads an unsigned n-bytes integer from the underlying reader. Read more

fn read_int<T>(&mut self, nbytes: usize) -> Result<i64, Error> where
    T: ByteOrder, 
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Reads a signed n-bytes integer from the underlying reader. Read more

fn read_f32<T>(&mut self) -> Result<f32, Error> where
    T: ByteOrder, 
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Reads a IEEE754 single-precision (4 bytes) floating point number from the underlying reader. Read more

fn read_f64<T>(&mut self) -> Result<f64, Error> where
    T: ByteOrder, 
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Reads a IEEE754 double-precision (8 bytes) floating point number from the underlying reader. Read more

fn read_u16_into<T>(&mut self, dst: &mut [u16]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of unsigned 16 bit integers from the underlying reader. Read more

fn read_u32_into<T>(&mut self, dst: &mut [u32]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of unsigned 32 bit integers from the underlying reader. Read more

fn read_u64_into<T>(&mut self, dst: &mut [u64]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of unsigned 64 bit integers from the underlying reader. Read more

fn read_i16_into<T>(&mut self, dst: &mut [i16]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of signed 16 bit integers from the underlying reader. Read more

fn read_i32_into<T>(&mut self, dst: &mut [i32]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of signed 32 bit integers from the underlying reader. Read more

fn read_i64_into<T>(&mut self, dst: &mut [i64]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of signed 64 bit integers from the underlying reader. Read more

fn read_f32_into<T>(&mut self, dst: &mut [f32]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of IEEE754 single-precision (4 bytes) floating point numbers from the underlying reader. Read more

fn read_f32_into_unchecked<T>(&mut self, dst: &mut [f32]) -> Result<(), Error> where
    T: ByteOrder, 
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Deprecated since 1.2.0:

please use read_f32_into instead

DEPRECATED. Read more

fn read_f64_into<T>(&mut self, dst: &mut [f64]) -> Result<(), Error> where
    T: ByteOrder, 
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Reads a sequence of IEEE754 double-precision (8 bytes) floating point numbers from the underlying reader. Read more

fn read_f64_into_unchecked<T>(&mut self, dst: &mut [f64]) -> Result<(), Error> where
    T: ByteOrder, 
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Deprecated since 1.2.0:

please use read_f64_into instead

DEPRECATED. Read more

impl<W> WriteBytesExt for W where
    W: Write + ?Sized, 
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fn write_u8(&mut self, n: u8) -> Result<(), Error>
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Writes an unsigned 8 bit integer to the underlying writer. Read more

fn write_i8(&mut self, n: i8) -> Result<(), Error>
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Writes a signed 8 bit integer to the underlying writer. Read more

fn write_u16<T>(&mut self, n: u16) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned 16 bit integer to the underlying writer. Read more

fn write_i16<T>(&mut self, n: i16) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed 16 bit integer to the underlying writer. Read more

fn write_u24<T>(&mut self, n: u32) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned 24 bit integer to the underlying writer. Read more

fn write_i24<T>(&mut self, n: i32) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed 24 bit integer to the underlying writer. Read more

fn write_u32<T>(&mut self, n: u32) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned 32 bit integer to the underlying writer. Read more

fn write_i32<T>(&mut self, n: i32) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed 32 bit integer to the underlying writer. Read more

fn write_u48<T>(&mut self, n: u64) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned 48 bit integer to the underlying writer. Read more

fn write_i48<T>(&mut self, n: i64) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed 48 bit integer to the underlying writer. Read more

fn write_u64<T>(&mut self, n: u64) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned 64 bit integer to the underlying writer. Read more

fn write_i64<T>(&mut self, n: i64) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed 64 bit integer to the underlying writer. Read more

fn write_uint<T>(&mut self, n: u64, nbytes: usize) -> Result<(), Error> where
    T: ByteOrder, 
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Writes an unsigned n-bytes integer to the underlying writer. Read more

fn write_int<T>(&mut self, n: i64, nbytes: usize) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a signed n-bytes integer to the underlying writer. Read more

fn write_f32<T>(&mut self, n: f32) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a IEEE754 single-precision (4 bytes) floating point number to the underlying writer. Read more

fn write_f64<T>(&mut self, n: f64) -> Result<(), Error> where
    T: ByteOrder, 
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Writes a IEEE754 double-precision (8 bytes) floating point number to the underlying writer. Read more