HashSet.cs :  » PDF » iTextSharp » Org » BouncyCastle » Utilities » Collections » C# / CSharp Open Source

using System;
using System.Collections;

namespace Org.BouncyCastle.Utilities.Collections{
  public class HashSet
    : ISet
  {
    private readonly Hashtable impl = new Hashtable();

    public HashSet()
    {
    }

    public HashSet(ISet s)
    {
      foreach (object o in s)
      {
        Add(o);
      }
    }

    public void Add(object o)
    {
      impl[o] = null;
    }

    public void AddAll(IEnumerable e)
    {
      foreach (object o in e)
      {
        Add(o);
      }
    }

    public void Clear()
    {
      impl.Clear();
    }

    public bool Contains(object o)
    {
      return impl.ContainsKey(o);
    }

    public void CopyTo(Array array, int index)
    {
      impl.Keys.CopyTo(array, index);
    }

    public int Count
    {
      get { return impl.Count; }
    }

    public IEnumerator GetEnumerator()
    {
      return impl.Keys.GetEnumerator();
    }

    public bool IsEmpty
    {
      get { return impl.Count == 0; }
    }

    public bool IsSynchronized
    {
      get { return impl.IsSynchronized; }
    }

    public void Remove(object o)
    {
      impl.Remove(o);
    }

    public void RemoveAll(IEnumerable e)
    {
      foreach (object o in e)
      {
        Remove(o);
      }
    }

    public object SyncRoot
    {
      get { return impl.SyncRoot; }
    }
  }
}