cleanup

platform/lang-impl/src/com/intellij/codeInspection/ui/InspectionTreeNodeReuser.java

@@ -1,53 +0,0 @@
-/*
- * Copyright 2000-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.intellij.codeInspection.ui;
-
-import com.intellij.codeInspection.CommonProblemDescriptor;
-import com.intellij.openapi.diagnostic.Logger;
-import com.intellij.util.ui.tree.TreeUtil;
-import gnu.trove.THashMap;
-
-import java.util.Map;
-import java.util.function.Supplier;
-
-/**
- * @author dima
- */
-//guarded by single tree rebuild thread
-public class InspectionTreeNodeReuser {
-  private final static Logger LOG = Logger.getInstance(InspectionTreeNodeReuser.class);
-  private final Map<CommonProblemDescriptor, ProblemDescriptionNode> myReusedNodes = new THashMap<>();
-
-  public InspectionTreeNodeReuser(InspectionTree tree) {
-    TreeUtil.traverse(tree.getRoot(), n -> {
-      if (n instanceof ProblemDescriptionNode) {
-        CommonProblemDescriptor descriptor = ((ProblemDescriptionNode)n).getDescriptor();
-        if (descriptor != null) {
-          myReusedNodes.put(descriptor, (ProblemDescriptionNode)n);
-        }
-      }
-      return true;
-    });
-  }
-
-  public ProblemDescriptionNode getOrCreate(CommonProblemDescriptor descriptor, Supplier<ProblemDescriptionNode> produces) {
-    ProblemDescriptionNode node = myReusedNodes.get(descriptor);
-    if (node != null) {
-      return node;
-    }
-    return produces.get();
-  }
-}