pub struct FrameState {
    pub call_id: CallId,
    pub protected_tags: SmallVec<[BorTag; 2]>,
}
Expand description

Per-call-stack-frame data for borrow tracking

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§call_id: CallId

The ID of the call this frame corresponds to.

§protected_tags: SmallVec<[BorTag; 2]>

If this frame is protecting any tags, they are listed here. We use this list to do incremental updates of the global list of protected tags stored in the stacked_borrows::GlobalState upon function return, and if we attempt to pop a protected tag, to identify which call is responsible for protecting the tag. See Stack::item_popped for more explanation.

This will contain one tag per reference passed to the function, so a size of 2 is enough for the vast majority of functions.

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impl Debug for FrameState

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

Formats the value using the given formatter. Read more
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impl VisitTags for FrameState

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fn visit_tags(&self, _visit: &mut dyn FnMut(BorTag))

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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 Twhere 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 Twhere 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 Twhere 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<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes