[vcs-log-graph] cleanup: extract method

GitOrigin-RevId: f1f779eafb27842c0f7ffaacea248f7588e01416

platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/sort/SortIndexMap.java

@@ -21,18 +21,7 @@ public interface SortIndexMap {
       reverseMap[list.get(i)] = i;
     }
 
-    IntList compressedMap = CompressedIntList.newInstance(new IntList() {
-      @Override
-      public int size() {
-        return list.size();
-      }
-
-      @Override
-      public int get(int index) {
-        return list.get(index);
-      }
-    }, CompressedIntList.DEFAULT_BLOCK_SIZE);
-
+    IntList compressedMap = CompressedIntList.newInstance(list);
     IntList compressedReverseMap = CompressedIntList.newInstance(reverseMap);
     return new SortIndexMap() {
       @Override

platform/vcs-log/graph/src/com/intellij/vcs/log/graph/utils/impl/CompressedIntList.java

@@ -1,10 +1,11 @@
-// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
-
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.vcs.log.graph.utils.impl;
 
 import com.intellij.vcs.log.graph.utils.IntList;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.List;
+
 public final class CompressedIntList implements IntList {
   public static final int DEFAULT_BLOCK_SIZE = 30;
 
@@ -28,6 +29,21 @@ public final class CompressedIntList implements IntList {
     }, blockSize);
   }
 
+  @NotNull
+  public static IntList newInstance(@NotNull List<Integer> delegateList) {
+    return newInstance(new IntList() {
+      @Override
+      public int size() {
+        return delegateList.size();
+      }
+
+      @Override
+      public int get(int index) {
+        return delegateList.get(index);
+      }
+    }, DEFAULT_BLOCK_SIZE);
+  }
+
   @NotNull
   public static IntList newInstance(final IntList delegateList, final int blockSize) {
     if (blockSize < 1) throw new IllegalArgumentException("Unsupported blockSize:" + blockSize);