Struct Selectors 

pub struct Selectors { /* private fields */ }

Backends by name.

use rich_ext::data::{parse, Format, Selectors};

let node = parse(Format::Json, r#"{"servers": [{"port": 80}, {"port": 443}]}"#).unwrap();
let selector = Selectors::default().compile("jsonpath", "$.servers[*].port").unwrap();
let ports: Vec<String> = selector.select(&node).unwrap().iter().map(|(p, _)| p.to_string()).collect();
assert_eq!(ports, ["servers[0].port", "servers[1].port"]);

Implementations

impl Selectors

pub fn new() -> Self

An empty registry.

pub fn register(&mut self, backend: Box<dyn SelectorBackend>) -> &mut Self

Add a backend, replacing any with the same name.

pub fn get(&self, name: &str) -> Option<&dyn SelectorBackend>

The backend called name.

pub fn names(&self) -> Vec<&str>

Registered names, in registration order.

pub fn compile( &self, backend: &str, expr: &str, ) -> Result<Box<dyn Selector>, SelectError>

Compile expr with the backend called backend.

Trait Implementations

impl Default for Selectors

fn default() -> Self

The built-in backends: JsonPath with the jsonpath feature, none otherwise.