Struct KeArcTreeNode 

pub struct KeArcTreeNode<Weight, Parent: IArcProvider, Wildness: IWildness, Children: IChildrenProvider<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>, Token: TokenTrait> { /* private fields */ }

Implementations

impl<Weight, Wildness: IWildness, Children: IChildrenProvider<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>, Token: TokenTrait> KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>

where Children::Assoc: IChildren<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>,

pub fn is_zombie(&self) -> bool

Under specific circumstances, a node that’s been cloned from a tree might have a destroyed parent. Such a node is “zombified”, and becomes unable to perform certain operations such as navigating its parents, which may be necessary for operations such as IKeyExprTreeNode::keyexpr.

To become zombified, a node and its parents must both have been pruned from the tree that constructed them, while at least one of the parents has also been dropped everywhere it was aliased through Arc.

Trait Implementations

impl<Weight, Parent: IArcProvider, Wildness: IWildness, Children: IChildrenProvider<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>, Token: TokenTrait> HasChunk for KeArcTreeNode<Weight, Parent, Wildness, Children, Token>

fn chunk(&self) -> &keyexpr

impl<Weight, Parent: IArcProvider, Wildness: IWildness, Children: IChildrenProvider<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>, Token: TokenTrait> IKeyExprTreeNode<Weight> for KeArcTreeNode<Weight, Parent, Wildness, Children, Token>

where Children::Assoc: IChildren<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>,

fn parent(&self) -> Option<&Self::Parent>

Access the parent node if it exists (the node isn’t the first chunk of a key-expression).

fn keyexpr(&self) -> OwnedKeyExpr

Compute this node’s full key expression.

fn weight(&self) -> Option<&Weight>

Access the node’s weight (or value).

fn children(&self) -> &Self::Children

Access a node’s children.

impl<Weight, Parent: IArcProvider, Wildness: IWildness, Children: IChildrenProvider<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>, Token: TokenTrait> IKeyExprTreeNodeMut<Weight> for KeArcTreeNode<Weight, Parent, Wildness, Children, Token>

where Children::Assoc: IChildren<Arc<TokenCell<KeArcTreeNode<Weight, Weak<()>, Wildness, Children, Token>, Token>>>,

fn parent_mut(&mut self) -> Option<&mut Self::Parent>

Mutably access the parent node if it exists (the node isn’t the first chunk of a key-expression).

fn weight_mut(&mut self) -> Option<&mut Weight>

Mutably access the node’s weight.

fn take_weight(&mut self) -> Option<Weight>

Remove the node’s weight.

fn insert_weight(&mut self, weight: Weight) -> Option<Weight>

Assign a weight to the node, returning the previous weight if the node had one.

fn children_mut(&mut self) -> &mut Self::Children

Mutably access the node’s children.