Struct rustc_ap_rustc_data_structures::snapshot_map::SnapshotMap

pub struct SnapshotMap<K, V> where
    K: Clone + Eq,  { /* fields omitted */ }

Methods

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

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>

pub fn snapshot(&mut self) -> Snapshot

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

pub fn partial_rollback<F>(
    &mut self,
    snapshot: &Snapshot,
    should_revert_key: &F
) where
    F: Fn(&K) -> bool, 

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

Trait Implementations

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

fn default() -> Self

Returns the "default value" for a type.

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

type Output = V

The returned type after indexing.

Important traits for &'_ mut I

impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

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

Performs the indexing (container[index]) operation.