Function extract_collected_by_attribute

src/parser/classes.rs:270–293

Extract the custom collection class name from a `#[CollectedBy(X::class)]` attribute. Scans the class's attribute lists for an attribute whose short name is `CollectedBy` and extracts the first argument's text with `::class` stripped. Returns `None` if no such attribute exists.

(
    attribute_lists: &Sequence<'_, AttributeList<'_>>,
    content: &str,
)

/// `CollectedBy` and extracts the first argument's text with `::class` stripped.
/// Returns `None` if no such attribute exists.
fn extract_collected_by_attribute(
    attribute_lists: &Sequence<'_, AttributeList<'_>>,
    content: &str,
) -> Option<String> {
    for attr_list in attribute_lists.iter() {
        for attr in attr_list.attributes.iter() {
            let short = attr.name.last_segment();
            if short != "CollectedBy" {
                continue;
            }
            let arg_list = attr.argument_list.as_ref()?;
            let first_arg = arg_list.arguments.first()?;
            let span = first_arg.span();
            let start = span.start.offset as usize;
            let end = span.end.offset as usize;
            let text = content.get(start..end)?;
            let class_name = text.trim_end_matches("::class").trim();
            if !class_name.is_empty() {
                return Some(class_name.to_string());
            }
        }
    }
    None
}

/// Determine the custom collection class for an Eloquent model.
///