Enum rustc_infer::infer::undo_log::UndoLog

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pub(crate) enum UndoLog<'tcx> {
    OpaqueTypes(OpaqueTypeKey<'tcx>, Option<OpaqueHiddenType<'tcx>>),
    TypeVariables(UndoLog<'tcx>),
    ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>),
    IntUnificationTable(UndoLog<Delegate<IntVid>>),
    FloatUnificationTable(UndoLog<Delegate<FloatVid>>),
    RegionConstraintCollector(UndoLog<'tcx>),
    RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>),
    ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>),
    PushRegionObligation,
}

Expand description

Records the “undo” data for a single operation that affects some form of inference variable.

Variants

`OpaqueTypes(OpaqueTypeKey<'tcx>, Option<OpaqueHiddenType<'tcx>>)`

`TypeVariables(UndoLog<'tcx>)`

`ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)`

`IntUnificationTable(UndoLog<Delegate<IntVid>>)`

`FloatUnificationTable(UndoLog<Delegate<FloatVid>>)`

`RegionConstraintCollector(UndoLog<'tcx>)`

`RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)`

`ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)`

`PushRegionObligation`

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<Instantiate> for UndoLog<'tcx>

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fn from(x: Instantiate) -> Self

Converts to this type from the input type.

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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> 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> From<UndoLog<Delegate>> for UndoLog<'tcx>

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fn from(x: UndoLog<Delegate>) -> Self

Converts to this type from the input type.

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impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>

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

Converts to this type from the input type.

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impl<'tcx> Rollback<UndoLog<'tcx>> for InferCtxtInner<'tcx>

The Rollback trait defines how to rollback a particular action.

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

Auto Trait Implementations

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

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

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

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

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 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,

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 for Twhere
U: Into<T>,

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>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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impl<'a, T> Captures<'a> for Twhere
T: ?Sized,

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: 64 bytes

Size for each variant:

OpaqueTypes: 32 bytes
TypeVariables: 40 bytes
ConstUnificationTable: 56 bytes
IntUnificationTable: 24 bytes
FloatUnificationTable: 24 bytes
RegionConstraintCollector: 32 bytes
RegionUnificationTable: 24 bytes
ProjectionCache: 56 bytes
PushRegionObligation: 0 bytes

Enum rustc_infer::infer::undo_log::UndoLog

Variants

OpaqueTypes(OpaqueTypeKey<'tcx>, Option<OpaqueHiddenType<'tcx>>)

TypeVariables(UndoLog<'tcx>)

ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)

IntUnificationTable(UndoLog<Delegate<IntVid>>)

FloatUnificationTable(UndoLog<Delegate<FloatVid>>)

RegionConstraintCollector(UndoLog<'tcx>)

RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)

ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)

PushRegionObligation

Trait Implementations

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

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

fn clone_from(&mut self, source: &Self)

impl<'tcx> From<Instantiate> for UndoLog<'tcx>

fn from(x: Instantiate) -> Self

impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

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

impl<'tcx> From<UndoLog<'tcx>> for UndoLog<'tcx>

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

impl<'tcx> From<UndoLog<Delegate>> for UndoLog<'tcx>

fn from(x: UndoLog<Delegate>) -> Self

impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>

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

impl<'tcx> Rollback<UndoLog<'tcx>> for InferCtxtInner<'tcx>

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

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

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

impl<'a, T> Captures<'a> for Twhere T: ?Sized,

Layout

`OpaqueTypes(OpaqueTypeKey<'tcx>, Option<OpaqueHiddenType<'tcx>>)`

`TypeVariables(UndoLog<'tcx>)`

`ConstUnificationTable(UndoLog<Delegate<ConstVid<'tcx>>>)`

`IntUnificationTable(UndoLog<Delegate<IntVid>>)`

`FloatUnificationTable(UndoLog<Delegate<FloatVid>>)`

`RegionConstraintCollector(UndoLog<'tcx>)`

`RegionUnificationTable(UndoLog<Delegate<RegionVidKey<'tcx>>>)`

`ProjectionCache(UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>)`

`PushRegionObligation`

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

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

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

impl<T> ToOwned for Twhere
T: Clone,

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

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<'a, T> Captures<'a> for Twhere
T: ?Sized,