Struct XPath 

pub struct XPath { /* private fields */ }

A compiled ANTLR parse-tree XPath expression.

Implementations

impl XPath

pub fn new<R>(recognizer: &R, path: &str) -> Result<Self, XPathError>

where R: Recognizer + ?Sized,

Compiles path against the rule and token names exposed by recognizer.

pub fn path(&self) -> &str

Returns the source expression used to compile this query.

pub fn evaluate<'tree>(&self, root: Node<'tree>) -> Vec<Node<'tree>>

Evaluates this expression relative to root.

Results retain parse-tree order and contain each node at most once. ANTLR’s synthetic evaluation root is retained between path steps so a wildcard prefix can select root later. A final synthetic-root match is omitted because it is not part of the caller’s parse tree.

pub fn find_all<'tree, R>( root: Node<'tree>, path: &str, recognizer: &R, ) -> Result<Vec<Node<'tree>>, XPathError>

where R: Recognizer + ?Sized,

Compiles and evaluates path relative to root.

Trait Implementations

impl Clone for XPath

fn clone(&self) -> XPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for XPath

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

Formats the value using the given formatter.