Function find_keyword_pos

src/completion/phpdoc/helpers.rs:12–27

Shared helpers for PHPDoc context detection and generation. These functions are used by both `context.rs` and `generation.rs` to parse PHP declarations (parameter lists, keyword positions, balanced parentheses). Find the position of a whole-word keyword in a declaration string. Returns the byte offset of the first occurrence of `keyword` that is not part of a larger identifier (i.e. the characte

(decl: &str, keyword: &str)

/// not part of a larger identifier (i.e. the characters immediately
/// before and after the match are not ASCII-alphanumeric).
pub(super) fn find_keyword_pos(decl: &str, keyword: &str) -> Option<usize> {
    let lower = decl.to_lowercase();
    let mut start = 0;
    while let Some(pos) = lower[start..].find(keyword) {
        let abs_pos = start + pos;
        let before_ok = abs_pos == 0 || !decl.as_bytes()[abs_pos - 1].is_ascii_alphanumeric();
        let after_pos = abs_pos + keyword.len();
        let after_ok =
            after_pos >= decl.len() || !decl.as_bytes()[after_pos].is_ascii_alphanumeric();
        if before_ok && after_ok {
            return Some(abs_pos);
        }
        start = abs_pos + keyword.len();
    }
    None
}

/// Find the position of the matching `)` for the first `(`, handling nesting.
///