syntax_data: {"ast_node_type":"function","tokens":[{"end":79,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn pattern_from_hir(&mut self, p: &'tcx hir::Pat<'tcx>) -> Box<Pat<'tcx>> {
context_before:     #[instrument(level = "debug", skip(self))]
context_after:         pat_from_hir(self.tcx, self.typing_env, self.typeck_results, p)