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SerializeHandle

Enum SerializeHandle 

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pub enum SerializeHandle<'a> {
    Borrowed(&'a dyn Serialize),
    Owned(Boxed<dyn Serialize + Send + 'a>),
}
Expand description

A handle to a Serialize type.

During serialization it common to be in a situation where one needs to return locally constructed Serialize. This is where SerializeHandle comes in. In cases where the Serialize cannot be borrowed it can be boxed up inside the handle.

The equivalent for deserialization is the SinkHandle.

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Borrowed(&'a dyn Serialize)

A borrowed reference to a Serialize.

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Owned(Boxed<dyn Serialize + Send + 'a>)

A Serialize owned by the handle (see Boxed).

Owned values must be Send so that the serialization can move between threads.

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impl<'a> SerializeHandle<'a>

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pub fn to<S: Serialize + 'a>(val: &'a S) -> SerializeHandle<'a>

Create a borrowed handle to a Serialize.

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pub fn arena<S: Serialize + Send + 'a>( val: S, state: &mut State, ) -> SerializeHandle<'a>

Creates an owned handle to a value in the arena of the serialization.

This is how owned values are typically created (for instance for Chunk::Forward), see Boxed.

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pub fn heap<S: Serialize + Send + 'a>(val: S) -> SerializeHandle<'a>

Creates an owned handle to a value on the heap.

Unlike arena the value does not need a state and is independent of any serialization.

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impl<'a> Deref for SerializeHandle<'a>

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type Target = dyn Serialize + 'a

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for SerializeHandle<'a>

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impl<'a> !Unpin for SerializeHandle<'a>

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

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impl<'a> Freeze for SerializeHandle<'a>

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impl<'a> Send for SerializeHandle<'a>

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impl<'a> Sync for SerializeHandle<'a>

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impl<'a> UnsafeUnpin for SerializeHandle<'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, 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<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.