Struct hyper::rt::ReadBuf

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pub struct ReadBuf<'a> { /* private fields */ }
Expand description

A wrapper around a byte buffer that is incrementally filled and initialized.

This type is a sort of “double cursor”. It tracks three regions in the buffer: a region at the beginning of the buffer that has been logically filled with data, a region that has been initialized at some point but not yet logically filled, and a region at the end that may be uninitialized. The filled region is guaranteed to be a subset of the initialized region.

In summary, the contents of the buffer can be visualized as:

[             capacity              ]
[ filled |         unfilled         ]
[    initialized    | uninitialized ]

It is undefined behavior to de-initialize any bytes from the uninitialized region, since it is merely unknown whether this region is uninitialized or not, and if part of it turns out to be initialized, it must stay initialized.

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impl<'data> ReadBuf<'data>

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pub fn new(raw: &'data mut [u8]) -> Self

Create a new ReadBuf with a slice of initialized bytes.

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pub fn uninit(raw: &'data mut [MaybeUninit<u8>]) -> Self

Create a new ReadBuf with a slice of uninitialized bytes.

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pub fn filled(&self) -> &[u8]

Get a slice of the buffer that has been filled in with bytes.

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pub fn unfilled<'cursor>(&'cursor mut self) -> ReadBufCursor<'cursor>

Get a cursor to the unfilled portion of the buffer.

Trait Implementations§

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impl<'data> Debug for ReadBuf<'data>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for ReadBuf<'a>

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impl<'a> RefUnwindSafe for ReadBuf<'a>

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impl<'a> Send for ReadBuf<'a>

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impl<'a> Sync for ReadBuf<'a>

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impl<'a> Unpin for ReadBuf<'a>

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impl<'a> !UnwindSafe for ReadBuf<'a>

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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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, 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more