Trait rustc_data_structures::undo_log::Rollback

pub trait Rollback<U> {
    fn reverse(&mut self, undo: U);
}

A trait implemented for storage types (like SnapshotVecStorage) which can be rolled back using actions of type U.

Required Methods

fn reverse(&mut self, undo: U)

Implementors

impl<K, V> Rollback<UndoLog<K, V>> for FxHashMap<K, V>where
    K: Eq + Hash,

impl<K, V, M, L> Rollback<UndoLog<K, V>> for SnapshotMap<K, V, M, L>where
    K: Eq + Hash,
    M: Rollback<UndoLog<K, V>>,

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

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

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

impl<'tcx> Rollback<UndoLog<ProjectionCacheKey<'tcx>, ProjectionCacheEntry<'tcx>>> for ProjectionCacheStorage<'tcx>