syntax_data: {"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let typing_env = ty::TypingEnv::fully_monomorphized();
context_before:     fn neg_1_literal(&mut self, span: Span, ty: Ty<'tcx>) -> Operand<'tcx> {
context_after:         let size = self.tcx.layout_of(typing_env.as_query_input(ty)).unwrap().size;