Struct rustc_data_structures::snapshot_map::SnapshotMap

pub struct SnapshotMap<K, V, M = FxHashMap<K, V>, L = VecLog<UndoLog<K, V>>> {
    map: M,
    undo_log: L,
    _marker: PhantomData<(K, V)>,
}

Fields

map: M

undo_log: L

_marker: PhantomData<(K, V)>

Implementations

impl<K, V, M, L> SnapshotMap<K, V, M, L>

pub fn with_log<L2>(&mut self, undo_log: L2) -> SnapshotMap<K, V, &mut M, L2>

impl<K, V, M, L> SnapshotMap<K, V, M, L>where
    K: Hash + Clone + Eq,
    M: BorrowMut<FxHashMap<K, V>> + Borrow<FxHashMap<K, V>>,
    L: UndoLogs<UndoLog<K, V>>,

pub fn clear(&mut self)

pub fn insert(&mut self, key: K, value: V) -> bool

pub fn remove(&mut self, key: K) -> bool

pub fn get(&self, key: &K) -> Option<&V>

impl<K, V> SnapshotMap<K, V>where
    K: Hash + Clone + Eq,

pub fn snapshot(&mut self) -> Snapshot

pub fn commit(&mut self, snapshot: Snapshot)

pub fn rollback_to(&mut self, snapshot: Snapshot)

Trait Implementations

impl<K: Clone, V: Clone, M: Clone, L: Clone> Clone for SnapshotMap<K, V, M, L>

fn clone(&self) -> SnapshotMap<K, V, M, L>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K, V, M, L> Default for SnapshotMap<K, V, M, L>where
    M: Default,
    L: Default,

fn default() -> Self

Returns the “default value” for a type.

impl<'k, K, V, M, L> Index<&'k K> for SnapshotMap<K, V, M, L>where
    K: Hash + Clone + Eq,
    M: Borrow<FxHashMap<K, V>>,

type Output = V

The returned type after indexing.

fn index(&self, key: &'k K) -> &V

Performs the indexing (container[index]) operation.

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

fn reverse(&mut self, undo: UndoLog<K, V>)

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.