| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Util |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /// <summary> |
| /// An <see cref="IntroSorter"/> for object arrays. |
| /// <para/> |
| /// @lucene.internal |
| /// </summary> |
| internal sealed class ArrayIntroSorter<T> : IntroSorter |
| { |
| private readonly T[] arr; |
| private readonly IComparer<T> comparer; |
| private T pivot; |
| |
| /// <summary> |
| /// Create a new <see cref="ArrayIntroSorter{T}"/>. </summary> |
| public ArrayIntroSorter(T[] arr, IComparer<T> comparer) |
| { |
| this.arr = arr; |
| this.comparer = comparer; |
| pivot = default(T); |
| } |
| |
| protected override int Compare(int i, int j) |
| { |
| return comparer.Compare(arr[i], arr[j]); |
| } |
| |
| protected override void Swap(int i, int j) |
| { |
| ArrayUtil.Swap(arr, i, j); |
| } |
| |
| protected override void SetPivot(int i) |
| { |
| pivot = (i < arr.Length) ? arr[i] : default(T); |
| } |
| |
| protected override int ComparePivot(int i) |
| { |
| return comparer.Compare(pivot, arr[i]); |
| } |
| } |
| } |