use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
use rustc::ty::{self, Ty};
use rustc::hir::*;
use syntax::codemap::Span;
impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Derive {
fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx Item) {
- if let ItemImpl(_, _, _, _, Some(ref trait_ref), _, _) = item.node {
+ if let ItemKind::Impl(_, _, _, _, Some(ref trait_ref), _, _) = item.node {
let ty = cx.tcx.type_of(cx.tcx.hir.local_def_id(item.id));
let is_automatically_derived = is_automatically_derived(&*item.attrs);