{"ast_node_type":"function","tokens":[{"end":86,"kind":"keyword","start":0,"text":"fn"}]}
    fn parse_expr_let(&mut self, restrictions: Restrictions) -> PResult<'a, P<Expr>> {
    /// Parses a `let $pat = $expr` pseudo-expression.
        let recovered = if !restrictions.contains(Restrictions::ALLOW_LET) {