syntax_data: {"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"Operand::Constant(Box::new(ConstOperand"}]}
source_snippet:                 Operand::Constant(Box::new(ConstOperand { span, user_ty: None, const_ }))
context_before:                 let const_ = Const::Ty(self.tcx.types.usize, *len_const);
context_after:             }