Struct CompiledSelector 

pub struct CompiledSelector { /* private fields */ }

A pre-compiled CSS selector for reuse across documents and threads.

Parsing a CSS selector string has non-trivial cost. When the same selector is used to query many documents (e.g., in a scraping loop), compile it once and reuse it to eliminate repeated parse overhead.

Example

use fhp_tree::parse;
use fhp_selector::{CompiledSelector, Selectable};

let sel = CompiledSelector::new("div.content").unwrap();
let doc = parse("<div class=\"content\">Hello</div>").unwrap();
let results = doc.select_compiled(&sel).unwrap();
assert_eq!(results.len(), 1);

Implementations

impl CompiledSelector

pub fn new(css: &str) -> Result<Self, SelectorError>

Compile a CSS selector string.

Errors

Returns SelectorError::Invalid if the selector syntax is invalid.

pub fn as_list(&self) -> &SelectorList

Access the underlying parsed selector list.

Trait Implementations

impl Clone for CompiledSelector

fn clone(&self) -> CompiledSelector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompiledSelector

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

Formats the value using the given formatter.