Method into_item

regex/regex-syntax/src/ast/mod.rs:1060–1066

Return this union as a character class set item. If this union contains zero items, then an empty union is returned. If this concatenation contains exactly 1 item, then the corresponding item is returned. Otherwise, ClassSetItem::Union is returned.

(mut self)

    /// corresponding item is returned. Otherwise, ClassSetItem::Union is
    /// returned.
    pub fn into_item(mut self) -> ClassSetItem {
        match self.items.len() {
            0 => ClassSetItem::Empty(self.span),
            1 => self.items.pop().unwrap(),
            _ => ClassSetItem::Union(self),
        }
    }
}

/// A Unicode character class set operation.