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extract() — tailwindcss Function Reference

Architecture documentation for the extract() function in mod.rs from the tailwindcss codebase.

Function rust OxideCore Scanner called by 3

Entity Profile

Dependency Diagram

graph TD
  8b98e622_fb07_ab68_6ea9_cff96fc37db6["extract()"]
  c6b9ad01_bfbd_d4a3_0543_b60d5f83e5d7["get_candidates_with_positions()"]
  c6b9ad01_bfbd_d4a3_0543_b60d5f83e5d7 -->|calls| 8b98e622_fb07_ab68_6ea9_cff96fc37db6
  13c697bf_449d_2ac5_439a_211d8945d721["extract_css_variables()"]
  13c697bf_449d_2ac5_439a_211d8945d721 -->|calls| 8b98e622_fb07_ab68_6ea9_cff96fc37db6
  e61e4bec_63c8_a3d9_0f83_d9ddcc055c47["parse_all_blobs()"]
  e61e4bec_63c8_a3d9_0f83_d9ddcc055c47 -->|calls| 8b98e622_fb07_ab68_6ea9_cff96fc37db6
  style 8b98e622_fb07_ab68_6ea9_cff96fc37db6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

crates/oxide/src/scanner/mod.rs lines 527–564

fn extract<H>(blobs: Vec<Vec<u8>>, handle: H) -> Vec<String>
where
    H: Fn(Extractor) -> Vec<Extracted> + std::marker::Sync,
{
    let mut result: Vec<_> = blobs
        .par_iter()
        .flat_map(|blob| blob.par_split(|x| *x == b'\n'))
        .filter_map(|blob| {
            if blob.is_empty() {
                return None;
            }

            let extracted = handle(crate::extractor::Extractor::new(blob));
            if extracted.is_empty() {
                return None;
            }

            Some(FxHashSet::from_iter(extracted.into_iter().map(
                |x| match x {
                    Extracted::Candidate(bytes) => bytes,
                    Extracted::CssVariable(bytes) => bytes,
                },
            )))
        })
        .reduce(Default::default, |mut a, b| {
            a.extend(b);
            a
        })
        .into_iter()
        .map(|s| unsafe { String::from_utf8_unchecked(s.to_vec()) })
        .collect();

    // SAFETY: Unstable sort is faster and in this scenario it's also safe because we are
    //         guaranteed to have unique candidates.
    result.par_sort_unstable();

    result
}

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Frequently Asked Questions

What does extract() do?
extract() is a function in the tailwindcss codebase.
What calls extract()?
extract() is called by 3 function(s): extract_css_variables, get_candidates_with_positions, parse_all_blobs.

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