Function strip_trailing_modifiers

src/util.rs:492–527

Strip trailing PHP visibility/modifier keywords from a string. Given a string like `" /** ... */\n public static"`, returns `" /** ... */"` (after stripping `static` and `public`). Recognised modifiers: `public`, `protected`, `private`, `static`, `abstract`, `final`, `readonly`.

(s: &str)

/// Recognised modifiers: `public`, `protected`, `private`, `static`,
/// `abstract`, `final`, `readonly`.
pub(crate) fn strip_trailing_modifiers(s: &str) -> &str {
    const MODIFIERS: &[&str] = &[
        "public",
        "protected",
        "private",
        "static",
        "abstract",
        "final",
        "readonly",
    ];

    let mut result = s;
    loop {
        let trimmed = result.trim_end();
        let mut found = false;
        for &kw in MODIFIERS {
            if let Some(prefix) = trimmed.strip_suffix(kw) {
                // Make sure the keyword isn't part of a larger identifier.
                if prefix.is_empty()
                    || prefix
                        .as_bytes()
                        .last()
                        .is_some_and(|&b| !b.is_ascii_alphanumeric() && b != b'_')
                {
                    result = prefix;
                    found = true;
                    break;
                }
            }
        }
        if !found {
            break;
        }
    }
    result.trim_end()
}

/// Find the first `;` in `s` that is not nested inside `()`, `[]`,
/// `{}`, or string literals.