Enum rustc_infer::infer::type_variable::UndoLog
source · pub(crate) enum UndoLog<'tcx> {
EqRelation(UndoLog<Delegate<TyVidEqKey<'tcx>>>),
SubRelation(UndoLog<Delegate<TyVid>>),
Values(UndoLog<Delegate>),
}
Expand description
Represents a single undo-able action that affects a type inference variable.
Variants§
EqRelation(UndoLog<Delegate<TyVidEqKey<'tcx>>>)
SubRelation(UndoLog<Delegate<TyVid>>)
Values(UndoLog<Delegate>)
Trait Implementations§
source§impl<'tcx> From<Instantiate> for UndoLog<'tcx>
impl<'tcx> From<Instantiate> for UndoLog<'tcx>
Convert from a specific kind of undo to the more general UndoLog
source§fn from(l: Instantiate) -> Self
fn from(l: Instantiate) -> 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: 40 bytes
Size for each variant:
EqRelation
: 32 bytesSubRelation
: 16 bytesValues
: 32 bytes