syntax_data: {"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"ty::ReEarlyParam(data)"}]}
source_snippet:             ty::ReEarlyParam(data) => {
context_before:         match r.kind() {
context_after:                 let rk = self.args.get(data.index() as usize).map(|arg| arg.kind());