Function highlight_rust

perro_website/src/highlight.rs:105–214

(code: &str)

        out.to_string()
    }
}

#[derive(Default)]
pub struct AnchorIds {
    next_suffix: HashMap<String, usize>,
    emitted: HashSet<String>,
}

pub fn unique_anchor_id(text: &str, seen: &mut AnchorIds) -> String {
    let base = anchor_id(text);
    let suffix = seen.next_suffix.entry(base.clone()).or_insert(0);
    loop {
        let id = if *suffix == 0 {
            base.clone()
        } else {
            format!("{base}-{suffix}")
        };
        *suffix += 1;
        if seen.emitted.insert(id.clone()) {
            return id;
        }
    }
}

fn heading_level_num(level: pulldown_cmark::HeadingLevel) -> u8 {
    match level {
        pulldown_cmark::HeadingLevel::H1 => 1,
        pulldown_cmark::HeadingLevel::H2 => 2,
        pulldown_cmark::HeadingLevel::H3 => 3,
        pulldown_cmark::HeadingLevel::H4 => 4,
        pulldown_cmark::HeadingLevel::H5 => 5,
        pulldown_cmark::HeadingLevel::H6 => 6,
    }
}

struct CodeBlock {
    lang: String,
    code: String,
}

impl CodeBlock {
    fn new(kind: CodeBlockKind<'_>) -> Self {
        let lang = match kind {
            CodeBlockKind::Fenced(info) => info.split_whitespace().next().unwrap_or("").to_string(),
            CodeBlockKind::Indented => String::new(),
        };
        Self {
            lang,
            code: String::new(),
        }
    }

    fn render(&self) -> String {
        code_block_html(&self.lang, &self.code)
    }
}

pub fn code_block_html(lang: &str, code: &str) -> String {