syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"assert!(!constant.const_.ty().has_param());"}]}
source_snippet:         assert!(!constant.const_.ty().has_param());
context_before:     ) -> Result<(ty::ValTree<'tcx>, Ty<'tcx>), interpret::ErrorHandled> {
context_after:         let (uv, ty) = match constant.const_ {