{"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"expr_from_text(&format!(\"{lhs}"}]}
    expr_from_text(&format!("{lhs} {op} {rhs}"))
pub fn expr_bin_op(lhs: ast::Expr, op: ast::BinaryOp, rhs: ast::Expr) -> ast::Expr {
}