rustc/vendor/syntect-5.2.0/examples/latex-demo.rs

use syntect::easy::HighlightLines;
use syntect::parsing::SyntaxSet;
use syntect::highlighting::{ThemeSet,Style};
use syntect::util::{as_latex_escaped,LinesWithEndings};

fn main() {
    // Load these once at the start of your program
    let ps = SyntaxSet::load_defaults_newlines();
    let ts = ThemeSet::load_defaults();

    let syntax = ps.find_syntax_by_extension("rs").unwrap();
    let s = "pub struct Wow { hi: u64 }\nfn blah() -> u64 {}\n";

    let mut h = HighlightLines::new(syntax, &ts.themes["InspiredGitHub"]);
    for line in LinesWithEndings::from(s) { // LinesWithEndings enables use of newlines mode
        let ranges: Vec<(Style, &str)> = h.highlight_line(line, &ps).unwrap();
        let escaped = as_latex_escaped(&ranges[..]);
        println!("\n{:?}", line);
        println!("\n{}", escaped);
    }
}