Enum rustc_infer::infer::undo_log::UndoLog
source · 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§
source§impl<'tcx> From<Instantiate> for UndoLog<'tcx>
impl<'tcx> From<Instantiate> for UndoLog<'tcx>
source§fn from(x: Instantiate) -> Self
fn from(x: Instantiate) -> Self
Converts to this type from the input type.
source§impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>
impl<'tcx> From<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for UndoLog<'tcx>
source§fn from(
x: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>
) -> Self
fn from(
x: UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>
) -> Self
Converts to this type from the input type.
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§
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 bytesTypeVariables
: 40 bytesConstUnificationTable
: 56 bytesIntUnificationTable
: 24 bytesFloatUnificationTable
: 24 bytesRegionConstraintCollector
: 32 bytesRegionUnificationTable
: 24 bytesProjectionCache
: 56 bytesPushRegionObligation
: 0 bytes