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Cursor

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Struct Cursor 

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pub struct Cursor<'a, K, P, Tag = DefaultObjectTag, S = NonTrackingSize, O = DefaultWavlTreeObserver<<P as PtrTraits>::Target>>
where
    P: PtrTraits,
    P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>,
    K: Ord,
    S: SizeTracker,
    O: WavlTreeObserver<Target = P::Target>,
{ /* private fields */ }
Expand description

A read-only cursor positioned in a WavlTree.

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impl<'a, K, P, Tag, S, O> Cursor<'a, K, P, Tag, S, O>
where P: PtrTraits, P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>, K: Ord, S: SizeTracker, O: WavlTreeObserver<Target = P::Target>,

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pub fn get(&self) -> Option<&'a P::Target>

Returns a reference to the current element, or None if the cursor is at the sentinel.

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pub fn is_valid(&self) -> bool

Returns true if the cursor is positioned at a valid element (not the sentinel).

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pub fn left(&self) -> Self

Returns a cursor positioned at the left child of the current element. If the current element is the sentinel, returns a cursor at the sentinel.

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pub fn right(&self) -> Self

Returns a cursor positioned at the right child of the current element.

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pub fn parent(&self) -> Self

Returns a cursor positioned at the parent of the current element.

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pub fn as_raw_ptr(&self) -> *mut P::Target

Returns the raw pointer to the current element. This may be a sentinel pointer if the cursor is at the sentinel.

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impl<'a, K, P, Tag, S, O> Clone for Cursor<'a, K, P, Tag, S, O>
where P: PtrTraits, P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>, K: Ord, S: SizeTracker, O: WavlTreeObserver<Target = P::Target>,

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a, K, P, Tag, S, O> Debug for Cursor<'a, K, P, Tag, S, O>
where P: PtrTraits, P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>, K: Ord, S: SizeTracker, O: WavlTreeObserver<Target = P::Target>,

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

Formats the value using the given formatter. Read more
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impl<'a, K, P, Tag, S, O> PartialEq for Cursor<'a, K, P, Tag, S, O>
where P: PtrTraits, P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>, K: Ord, S: SizeTracker, O: WavlTreeObserver<Target = P::Target>,

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a, K, P, Tag, S, O> Copy for Cursor<'a, K, P, Tag, S, O>
where P: PtrTraits, P::Target: WavlTreeContainable<P::Target, Tag> + WavlTreeKeyable<K>, K: Ord, S: SizeTracker, O: WavlTreeObserver<Target = P::Target>,

Auto Trait Implementations§

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impl<'a, K, P, Tag, S, O> Freeze for Cursor<'a, K, P, Tag, S, O>

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impl<'a, K, P, Tag, S, O> RefUnwindSafe for Cursor<'a, K, P, Tag, S, O>
where <P as PtrTraits>::Target: RefUnwindSafe, S: RefUnwindSafe, O: RefUnwindSafe, K: RefUnwindSafe, P: RefUnwindSafe, Tag: RefUnwindSafe,

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impl<'a, K, P, Tag = DefaultObjectTag, S = NonTrackingSize, O = DefaultWavlTreeObserver<<P as PtrTraits>::Target>> !Send for Cursor<'a, K, P, Tag, S, O>

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impl<'a, K, P, Tag = DefaultObjectTag, S = NonTrackingSize, O = DefaultWavlTreeObserver<<P as PtrTraits>::Target>> !Sync for Cursor<'a, K, P, Tag, S, O>

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impl<'a, K, P, Tag, S, O> Unpin for Cursor<'a, K, P, Tag, S, O>

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impl<'a, K, P, Tag, S, O> UnsafeUnpin for Cursor<'a, K, P, Tag, S, O>

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impl<'a, K, P, Tag, S, O> UnwindSafe for Cursor<'a, K, P, Tag, S, O>
where <P as PtrTraits>::Target: RefUnwindSafe, S: RefUnwindSafe, O: RefUnwindSafe, K: RefUnwindSafe, P: RefUnwindSafe, Tag: RefUnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Init<T> for T

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unsafe fn __init(self, slot: *mut T) -> Result<(), Infallible>

Initializes slot. Read more
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fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

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impl<T> PinInit<T> for T

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unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), Infallible>

Initializes slot. Read more
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fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.