Struct QueryIndex 

pub struct QueryIndex<'a> { /* private fields */ }

Structural child and field lookups for one network state, as the JavaScript QueryIndex: built once, so matching does not rescan every link for every node.

A tree stored bottom-up, every child referencing its parent first, and a tree stored top-down, a Syntax link referencing its children tokens included, hold the same children.

Implementations

impl<'a> QueryIndex<'a>

pub fn new(network: &'a LinkNetwork) -> Self

Indexes the structural children and fields of network.

pub fn link(&self, id: LinkId) -> Option<&'a Link>

The link id names.

pub fn structural_children(&self, parent: LinkId) -> &[LinkId]

The structural children of parent, in network order, without field and trivia links.

pub fn field_targets(&self, parent: LinkId, label: &str) -> Vec<LinkId>

The children parent holds under field label.

Trait Implementations

impl<'a> Clone for QueryIndex<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for QueryIndex<'a>

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

Formats the value using the given formatter.