pub(crate) enum UndoLog<'tcx> {
    AddVar(RegionVid),
    AddConstraint(Constraint<'tcx>),
    AddVerify(usize),
    AddGiven(Region<'tcx>, RegionVid),
    AddCombination(CombineMapType, TwoRegions<'tcx>),
}

Variants§

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AddVar(RegionVid)

We added RegionVid.

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AddConstraint(Constraint<'tcx>)

We added the given constraint.

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AddVerify(usize)

We added the given verify.

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AddGiven(Region<'tcx>, RegionVid)

We added the given given.

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AddCombination(CombineMapType, TwoRegions<'tcx>)

We added a GLB/LUB “combination variable”.

Trait Implementations§

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impl<'tcx> Clone for UndoLog<'tcx>

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fn clone(&self) -> UndoLog<'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

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fn from(x: UndoLog<'tcx>) -> Self

Converts to this type from the input type.
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impl<'tcx> PartialEq<UndoLog<'tcx>> for UndoLog<'tcx>

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fn eq(&self, other: &UndoLog<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'tcx> Rollback<UndoLog<'tcx>> for RegionConstraintStorage<'tcx>

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fn reverse(&mut self, undo: UndoLog<'tcx>)

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impl<'tcx> Copy for UndoLog<'tcx>

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impl<'tcx> StructuralPartialEq for UndoLog<'tcx>

Auto Trait Implementations§

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impl<'tcx> RefUnwindSafe for UndoLog<'tcx>

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impl<'tcx> !Send for UndoLog<'tcx>

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impl<'tcx> !Sync for UndoLog<'tcx>

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impl<'tcx> Unpin for UndoLog<'tcx>

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impl<'tcx> UnwindSafe for UndoLog<'tcx>

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,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
U: From<T>,

const: unstable · source§

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> ToOwned for Twhere
T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
const: unstable · source§

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.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 32 bytes

Size for each variant:

  • AddVar: 7 bytes
  • AddConstraint: 31 bytes
  • AddVerify: 15 bytes
  • AddGiven: 15 bytes
  • AddCombination: 23 bytes