Struct ElementChain 

pub struct ElementChain { /* private fields */ }

右（自分）→ 左（祖先）

Cloning is O(1) and prepending an element is O(1): descendant chains share their ancestor links through Arc.

Implementations

impl ElementChain

pub fn prepend(&self, info: Option<ElementInfo>) -> Self

Returns this chain extended with info as the innermost element.

Passing None yields an equivalent chain without allocating.

pub fn first(&self) -> Option<&ElementInfo>

The innermost (current) element.

pub fn from_vec(elements: Vec<ElementInfo>) -> Self

Builds a chain from elements ordered innermost-first.

pub fn from_document_order( elements: impl IntoIterator<Item = ElementInfo>, ) -> Self

Builds a chain by prepending elements in iteration order, so the last element becomes the nearest link. Feeding siblings in document order therefore yields a nearest-first chain.

Trait Implementations

impl Clone for ElementChain

fn clone(&self) -> ElementChain

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ElementChain

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

Formats the value using the given formatter.

impl Default for ElementChain

fn default() -> ElementChain

Returns the “default value” for a type.