Function extract_generic_inner

rust/fory-derive/src/object/util.rs:212–222

Extract the inner generic arguments from a type name while ignoring path qualifiers. e.g., both `Vec ` and `::std::vec::Vec ` return `T` when `outer` is `Vec`.

(s: &'a str, outer: &str)

///
/// e.g., both `Vec<T>` and `::std::vec::Vec<T>` return `T` when `outer` is `Vec`.
fn extract_generic_inner<'a>(s: &'a str, outer: &str) -> Option<&'a str> {
    let generic_start = s.find('<')?;
    let owner = s[..generic_start]
        .rsplit("::")
        .next()
        .unwrap_or(&s[..generic_start]);
    if owner != outer {
        return None;
    }
    s[generic_start + 1..].strip_suffix('>')
}

/// Return the final path segment so absolute generated paths match the same runtime type names.
///