async_codec_util::decoder

Struct DecodeExact

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pub struct DecodeExact<D> { /* private fields */ }
Expand description

Wraps a decoder and emits an error if it does not stop encoding at exactly the specified byte count.

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impl<D> DecodeExact<D>

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pub fn new(dec: D, target: usize) -> DecodeExact<D>

Create a new DecodeExact, delegating to the given dec and checking that it decodes exactly target bytes.

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impl<D> AsyncDecode for DecodeExact<D>
where D: AsyncDecode,

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type Item = <D as AsyncDecode>::Item

The type of the value to decode.
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type Error = DecodeExactError<<D as AsyncDecode>::Error, <D as AsyncDecode>::Item>

An error indicating how decoding can fail.
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fn poll_decode<R: AsyncRead>( self, cx: &mut Context<'_>, reader: &mut R, ) -> PollDec<Self::Item, Self, Self::Error>

Call reader.poll_read exactly once, propgating any Err and Pending, and return how many bytes have been read, as well as the decoded value, once decoding is done. Read more

Auto Trait Implementations§

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impl<D> Freeze for DecodeExact<D>
where D: Freeze,

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impl<D> RefUnwindSafe for DecodeExact<D>
where D: RefUnwindSafe,

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impl<D> Send for DecodeExact<D>
where D: Send,

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impl<D> Sync for DecodeExact<D>
where D: Sync,

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impl<D> Unpin for DecodeExact<D>
where D: Unpin,

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impl<D> UnwindSafe for DecodeExact<D>
where D: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.