/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for Additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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/* ================================================================
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* About NPOI
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* Author: Tony Qu
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* Author's email: tonyqus (at) gmail.com
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* Author's Blog: tonyqus.wordpress.com.cn (wp.tonyqus.cn)
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* HomePage: http://www.codeplex.com/npoi
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* Contributors:
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*
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* ==============================================================*/
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using System;
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using System.Collections;
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namespace HH.WMS.Utils.NPOI.Util.Collections
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{
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/// <summary>
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/// This class comes from Java
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/// </summary>
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public class HashSet: ISet
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{
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private readonly Hashtable impl = new Hashtable();
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/// <summary>
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/// Initializes a new instance of the <see cref="HashSet"/> class.
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/// </summary>
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public HashSet()
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="HashSet"/> class.
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/// </summary>
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/// <param name="s">The s.</param>
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public HashSet(ISet s)
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{
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foreach (object o in s)
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{
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Add(o);
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}
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}
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/// <summary>
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/// Adds the specified o.
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/// </summary>
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/// <param name="o">The o.</param>
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public void Add(object o)
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{
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impl[o] = null;
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}
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/// <summary>
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/// Determines whether [contains] [the specified o].
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/// </summary>
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/// <param name="o">The o.</param>
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/// <returns>
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/// <c>true</c> if [contains] [the specified o]; otherwise, <c>false</c>.
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/// </returns>
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public bool Contains(object o)
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{
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return impl.ContainsKey(o);
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}
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/// <summary>
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/// Copies the elements of the <see cref="T:System.Collections.ICollection"/> to an <see cref="T:System.Array"/>, starting at a particular <see cref="T:System.Array"/> index.
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/// </summary>
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/// <param name="array">The one-dimensional <see cref="T:System.Array"/> that is the destination of the elements copied from <see cref="T:System.Collections.ICollection"/>. The <see cref="T:System.Array"/> must have zero-based indexing.</param>
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/// <param name="index">The zero-based index in <paramref name="array"/> at which copying begins.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="array"/> is null.
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/// </exception>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// <paramref name="index"/> is less than zero.
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/// </exception>
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/// <exception cref="T:System.ArgumentException">
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/// <paramref name="array"/> is multidimensional.
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/// -or-
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/// <paramref name="index"/> is equal to or greater than the length of <paramref name="array"/>.
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/// -or-
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/// The number of elements in the source <see cref="T:System.Collections.ICollection"/> is greater than the available space from <paramref name="index"/> to the end of the destination <paramref name="array"/>.
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/// </exception>
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/// <exception cref="T:System.ArgumentException">
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/// The type of the source <see cref="T:System.Collections.ICollection"/> cannot be cast automatically to the type of the destination <paramref name="array"/>.
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/// </exception>
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public void CopyTo(Array array, int index)
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{
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impl.Keys.CopyTo(array, index);
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}
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/// <summary>
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/// Gets the number of elements contained in the <see cref="T:System.Collections.ICollection"/>.
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/// </summary>
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/// <value></value>
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/// <returns>
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/// The number of elements contained in the <see cref="T:System.Collections.ICollection"/>.
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/// </returns>
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public int Count
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{
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get { return impl.Count; }
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}
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/// <summary>
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/// Returns an enumerator that iterates through a collection.
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/// </summary>
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/// <returns>
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/// An <see cref="T:System.Collections.IEnumerator"/> object that can be used to iterate through the collection.
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/// </returns>
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public IEnumerator GetEnumerator()
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{
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return impl.Keys.GetEnumerator();
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}
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/// <summary>
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/// Gets a value indicating whether access to the <see cref="T:System.Collections.ICollection"/> is synchronized (thread safe).
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/// </summary>
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/// <value></value>
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/// <returns>true if access to the <see cref="T:System.Collections.ICollection"/> is synchronized (thread safe); otherwise, false.
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/// </returns>
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public bool IsSynchronized
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{
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get { return impl.IsSynchronized; }
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}
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/// <summary>
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/// Removes the specified o.
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/// </summary>
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/// <param name="o">The o.</param>
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public void Remove(object o)
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{
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impl.Remove(o);
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}
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/// <summary>
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/// Gets an object that can be used to synchronize access to the <see cref="T:System.Collections.ICollection"/>.
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/// </summary>
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/// <value></value>
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/// <returns>
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/// An object that can be used to synchronize access to the <see cref="T:System.Collections.ICollection"/>.
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/// </returns>
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public object SyncRoot
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{
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get { return impl.SyncRoot; }
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}
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/// <summary>
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/// Removes all of the elements from this set.
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/// The set will be empty after this call returns.
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/// </summary>
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public void Clear()
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{
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impl.Clear();
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}
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}
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}
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