Method slot_name

crates/derive-impl/src/pyclass.rs:1648–1685

(&self)

impl SlotItemMeta {
    fn slot_name(&self) -> Result<Ident> {
        let inner = self.inner();
        let method_name = if let Some((_, meta)) = inner.meta_map.get("name") {
            match meta {
                Meta::Path(path) => path.get_ident().cloned(),
                _ => None,
            }
        } else {
            let ident_str = self.inner().item_name();
            // Convert to lowercase to handle both SLOT_NEW and slot_new
            let ident_lower = ident_str.to_lowercase();
            let name = if let Some(stripped) = ident_lower.strip_prefix("slot_") {
                proc_macro2::Ident::new(stripped, inner.item_ident.span())
            } else {
                inner.item_ident.clone()
            };
            Some(name)
        };
        let method_name = method_name.ok_or_else(|| {
            err_span!(
                inner.meta_ident,
                "#[pyslot] must be of the form #[pyslot] or #[pyslot(slot_name)]",
            )
        })?;

        // Strip double underscores from slot names like __init__ -> init
        let method_name_str = method_name.to_string();
        let slot_name = if method_name_str.starts_with("__")
            && method_name_str.ends_with("__")
            && method_name_str.len() > 4
        {
            &method_name_str[2..method_name_str.len() - 2]
        } else {
            &method_name_str
        };

        Ok(proc_macro2::Ident::new(slot_name, slot_name.span()))
    }
}

struct MemberItemMeta(ItemMetaInner);