{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
        let (word, shift) = self.word_and_shift(ln, var);
    pub(super) fn get_writer(&self, ln: LiveNode, var: Variable) -> bool {
        (self.words[word] >> shift) & Self::RWU_WRITER != 0