wasmtime_environ

Struct ScopeVec

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pub struct ScopeVec<T> { /* private fields */ }
Expand description

Small data structure to help extend the lifetime of a slice to a higher scope.

This is currently used during component translation where translation in general works on a borrowed slice which contains all input modules, but generated adapter modules for components don’t live within the original slice but the data structures are much easier if the dynamically generated adapter modules live for the same lifetime as the original input slice. To solve this problem this ScopeVec helper is used to move ownership of a Vec<T> to a higher scope in the program, then borrowing the slice from that scope.

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impl<T> ScopeVec<T>

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pub fn new() -> ScopeVec<T>

Creates a new blank scope.

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pub fn push(&self, data: Vec<T>) -> &mut [T]

Transfers ownership of data into this scope and then yields the slice back to the caller.

The original data will be deallocated when self is dropped.

Auto Trait Implementations§

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impl<T> !Freeze for ScopeVec<T>

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impl<T> !RefUnwindSafe for ScopeVec<T>

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

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impl<T> !Sync for ScopeVec<T>

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impl<T> Unpin for ScopeVec<T>

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impl<T> UnwindSafe for ScopeVec<T>
where T: 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, 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.