Struct Scanner 

pub struct Scanner { /* private fields */ }

A structure responsible for scanning some content and returning a list of possible classes.

By default, it splits the content by spaces, double quotes, single quotes, backticks and new lines, while ignoring arbitrary the content inside values/variants and variant groups by using split_ignore_arbitrary. It is recommended to use this function when splitting classes with characters which can be included inside arbitrary strings.

Example

The following code snippet defines a scanner for extracting classes listed in the data-en HTML attribute.

use encre_css::{Config, Scanner};
use std::collections::BTreeSet;

let mut config = Config::default();
config.scanner = Scanner::from_fn(|content| content.split(r#"data-en=""#)
    .filter_map(|v| v.split_once("\"").map(|(classes, _)| classes.split_whitespace()))
    .flatten()
    .collect::<BTreeSet<&str>>());

let generated = encre_css::generate(
    [r#"<h1 data-en="underline"></h1><p data-en="bg-red-200 text-blue-300"></p>"#],
    &config,
);

assert!(generated.ends_with(".bg-red-200 {
  background-color: oklch(88.5% .062 18.334);
}

.text-blue-300 {
  color: oklch(80.9% .105 251.813);
}

.underline {
  -webkit-text-decoration-line: underline;
  text-decoration-line: underline;
}"));

Implementations

impl Scanner

pub fn from_fn<T: 'static + Fn(&str) -> BTreeSet<&str> + Send + Sync>( scan_fn: T, ) -> Self

Build a Scanner from a closure taking some content and returning a list of possible classes.

Trait Implementations

impl Clone for Scanner

fn clone(&self) -> Scanner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Scanner

fn default() -> Self

Returns the “default value” for a type.