if_chain! { if let StmtKind::Local(ref local) = stmt.node; if let Some(ref init) = local.init; if let Some((ref cond, ref then, Some(else_))) = higher::if_block(&init); if let ExprKind::Block(ref block) = else_.node; if let StmtKind::Semi(ref e, _) = block.node if let ExprKind::Binary(ref op, ref left, ref right) = e.node; if BinOpKind::Eq == op.node; if let ExprKind::Lit(ref lit) = left.node; if let LitKind::Int(2, _) = lit.node; if let ExprKind::Lit(ref lit1) = right.node; if let LitKind::Int(2, _) = lit1.node; if let ExprKind::Lit(ref lit2) = cond.node; if let LitKind::Bool(true) = lit2.node; if let ExprKind::Block(ref block1) = then.node; if let StmtKind::Semi(ref e1, _) = block1.node if let ExprKind::Binary(ref op1, ref left1, ref right1) = e1.node; if BinOpKind::Eq == op1.node; if let ExprKind::Lit(ref lit3) = left1.node; if let LitKind::Int(1, _) = lit3.node; if let ExprKind::Lit(ref lit4) = right1.node; if let LitKind::Int(1, _) = lit4.node; if let PatKind::Wild = local.pat.node; then { // report your lint here } }