Enum rustc_infer::infer::undo_log::UndoLog

pub(crate) enum UndoLog<'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,
}

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

Variants

TypeVariables

Tuple Fields of TypeVariables

0: UndoLog<'tcx>

ConstUnificationTable

Tuple Fields of ConstUnificationTable

0: UndoLog<Delegate<ConstVid<'tcx>>>

IntUnificationTable

Tuple Fields of IntUnificationTable

0: UndoLog<Delegate<IntVid>>

FloatUnificationTable

Tuple Fields of FloatUnificationTable

0: UndoLog<Delegate<FloatVid>>

RegionConstraintCollector

Tuple Fields of RegionConstraintCollector

0: UndoLog<'tcx>

RegionUnificationTable

Tuple Fields of RegionUnificationTable

0: UndoLog<Delegate<RegionVidKey<'tcx>>>

ProjectionCache

Tuple Fields of ProjectionCache

0: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>

PushRegionObligation

Trait Implementations

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

fn from(x: Instantiate) -> Self

Performs the conversion.

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

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

Performs the conversion.

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

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

Performs the conversion.

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

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

Performs the conversion.

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

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

Performs the conversion.

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

The Rollback trait defines how to rollback a particular action.

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

Layout

Note: Most layout information is completely unstable and may be different between compiler versions and platforms. 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: 72 bytes