Enum rustc_data_structures::snapshot_vec::UndoLog

pub enum UndoLog<D> where
    D: SnapshotVecDelegate,  {
    OpenSnapshot,
    CommittedSnapshot,
    NewElem(usize),
    SetElem(usize, <D as SnapshotVecDelegate>::Value),
    Other(<D as SnapshotVecDelegate>::Undo),
}

Variants

OpenSnapshot

Indicates where a snapshot started.

CommittedSnapshot

Indicates a snapshot that has been committed.

NewElem(usize)

New variable with given index was created.

SetElem(usize, <D as SnapshotVecDelegate>::Value)

Variable with given index was changed from the given value.

Other(<D as SnapshotVecDelegate>::Undo)

Extensible set of actions

Trait Implementations

impl<D> Clone for UndoLog<D> where     D: SnapshotVecDelegate,     <D as SnapshotVecDelegate>::Value: Clone,     <D as SnapshotVecDelegate>::Undo: Clone,

fn clone(&self) -> UndoLog<D>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D> Debug for UndoLog<D> where     D: SnapshotVecDelegate + Debug,     <D as SnapshotVecDelegate>::Value: Debug,     <D as SnapshotVecDelegate>::Undo: Debug,

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.