Function init_body

codegraph-kernel/src/cfnptr.rs:579–633

INIT_RE body after the anchor: `\s*(?:MOD\s+)*(?:struct\s+)?(\w+)\s+(\w+)\s*(\[[^\]]*\])?\s*=\s*\{` Backtracks: modifier count (desc), `struct` with/without, bracket with/without — exactly the observable dimensions of the JS engine.

(s: &[u8], p: usize)

/// `\s*(?:MOD\s+)*(?:struct\s+)?(\w+)\s+(\w+)\s*(\[[^\]]*\])?\s*=\s*\{`
/// Backtracks: modifier count (desc), `struct` with/without, bracket
/// with/without — exactly the observable dimensions of the JS engine.
fn init_body(s: &[u8], p: usize) -> Option<(String, usize)> {
    let i = skip_jsws(s, p);
    let mods = modifier_positions(s, i);
    for &pos in mods.iter().rev() {
        for keyword in [Some(b"struct".as_slice()), Some(b"union".as_slice()), None] {
            let q = if let Some(keyword) = keyword {
                if s.len() >= pos + keyword.len() && &s[pos..pos + keyword.len()] == keyword {
                    let e = pos + keyword.len();
                    let w = skip_jsws(s, e);
                    if w == e {
                        continue;
                    }
                    w
                } else {
                    continue;
                }
            } else {
                pos
            };
            if !is_word_at(s, q) {
                continue;
            }
            let te = word_end(s, q);
            let w = skip_jsws(s, te);
            if w == te {
                continue; // \s+ needs ≥1
            }
            if !is_word_at(s, w) {
                continue;
            }
            let ne = word_end(s, w);
            let r = skip_jsws(s, ne);
            for with_bracket in [true, false] {
                let r2 = if with_bracket {
                    match bracket_span(s, r) {
                        Some(e) => e,
                        None => continue,
                    }
                } else {
                    r
                };
                let r3 = skip_jsws(s, r2);
                if s.get(r3) != Some(&b'=') {
                    continue;
                }
                let r4 = skip_jsws(s, r3 + 1);
                if s.get(r4) != Some(&b'{') {
                    continue;
                }
                return Some((bytes_to_string(&s[q..te]), r4 + 1));
            }
        }
    }
    None
}

/// ARRAY_TABLE_RE body after the anchor: