Struct rustc_ap_rustc_data_structures::undo_log::NoUndo[−][src]

pub struct NoUndo;

Trait Implementations

impl<T> UndoLogs<T> for NoUndo[src]

pub fn num_open_snapshots(&self) -> usize[src]

How many open snapshots this undo log currently has

pub fn push(&mut self, _undo: T)[src]

Pushes a new “undo item” onto the undo log. This method is invoked when some action is taken (e.g., a variable is unified). It records the info needed to reverse that action should an enclosing snapshot be rolleod back. Read more

pub fn clear(&mut self)[src]

Removes all items from the undo log.

fn in_snapshot(&self) -> bool[src]

True if a snapshot has started, false otherwise

fn extend<I>(&mut self, undos: I) where
    I: IntoIterator<Item = T>, [src]

Extends the undo log with many undos.

Auto Trait Implementations

impl RefUnwindSafe for NoUndo

impl Send for NoUndo

impl Sync for NoUndo

impl Unpin for NoUndo

impl UnwindSafe for NoUndo

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T> Instrument for T[src]

fn instrument(self, span: Span) -> Instrumented<Self>[src]

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>[src]

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 

pub fn vzip(self) -> V

impl<'a, T> Captures<'a> for T where
    T: ?Sized, [src]

impl<T> Erased for T[src]