Method getset_name

crates/derive-impl/src/pyclass.rs:1562–1603

(&self)

impl GetSetItemMeta {
    fn getset_name(&self) -> Result<(String, GetSetItemKind)> {
        let inner = self.inner();
        let kind = if inner._bool("setter")? {
            GetSetItemKind::Set
        } else {
            GetSetItemKind::Get
        };
        let name = inner._optional_str("name")?;
        let py_name = if let Some(name) = name {
            name
        } else {
            let sig_name = inner.item_name();
            let extract_prefix_name = |prefix, item_typ| {
                if let Some(name) = sig_name.strip_prefix(prefix) {
                    if name.is_empty() {
                        Err(err_span!(
                            inner.meta_ident,
                            r#"A #[{}({typ})] fn with a {prefix}* name must \
                             have something after "{prefix}""#,
                            inner.meta_name(),
                            typ = item_typ,
                            prefix = prefix
                        ))
                    } else {
                        Ok(name.to_owned())
                    }
                } else {
                    Err(err_span!(
                        inner.meta_ident,
                        r#"A #[{}(setter)] fn must either have a `name` \
                         parameter or a fn name along the lines of "set_*""#,
                        inner.meta_name()
                    ))
                }
            };
            match kind {
                GetSetItemKind::Get => sig_name,
                GetSetItemKind::Set => extract_prefix_name("set_", "setter")?,
            }
        };
        Ok((py_name, kind))
    }
}

struct SlotItemMeta(ItemMetaInner);