syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"assert_eq!(self.to_ty(tcx),"}]}
source_snippet:             assert_eq!(self.to_ty(tcx), val.ty);
context_before:         if let Some(val) = val {
context_after:             let (new, oflo) = val.checked_add(tcx, 1);