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StreamingState

Enum StreamingState 

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pub enum StreamingState<'a> {
    Borrowed(&'a Value),
    Owned(Value),
}
Expand description

Borrowed or owned JSON state supplied to a streaming step.

Value, &Value, and references to smart pointers such as &Arc<Value> convert implicitly, so callers use one method name without losing ownership control.

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Borrowed(&'a Value)

State retained by the caller; the session clones only its projection.

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Owned(Value)

State transferred to the session so changed subtrees can move.

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impl<'a, T> From<&'a T> for StreamingState<'a>
where T: Borrow<Value> + ?Sized,

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fn from(state: &'a T) -> Self

Converts to this type from the input type.
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impl<'a, T> From<&'a mut T> for StreamingState<'a>
where T: Borrow<Value> + ?Sized,

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fn from(state: &'a mut T) -> Self

Converts to this type from the input type.
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impl From<Value> for StreamingState<'_>

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fn from(state: Value) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<'a> Freeze for StreamingState<'a>

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impl<'a> RefUnwindSafe for StreamingState<'a>

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impl<'a> Send for StreamingState<'a>

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impl<'a> Sync for StreamingState<'a>

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impl<'a> Unpin for StreamingState<'a>

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impl<'a> UnsafeUnpin for StreamingState<'a>

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impl<'a> UnwindSafe for StreamingState<'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<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.