{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"(Some(CastTy::Ptr(src)),"}]}
                            (Some(CastTy::Ptr(src)), Some(CastTy::Ptr(dst))) => {
                        match (cast_ty_from, cast_ty_to) {
                                let src_tail = self.struct_tail(src.ty, location);