init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Utilities/Collections/LinkedDictionary.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections;
+
+namespace Org.BouncyCastle.Utilities.Collections;
+
+public class LinkedDictionary : IDictionary, ICollection, IEnumerable
+{
+	internal readonly IDictionary hash = Platform.CreateHashtable();
+
+	internal readonly IList keys = Platform.CreateArrayList();
+
+	public virtual int Count => hash.Count;
+
+	public virtual bool IsFixedSize => false;
+
+	public virtual bool IsReadOnly => false;
+
+	public virtual bool IsSynchronized => false;
+
+	public virtual object SyncRoot => false;
+
+	public virtual ICollection Keys => Platform.CreateArrayList(keys);
+
+	public virtual ICollection Values
+	{
+		get
+		{
+			IList list = Platform.CreateArrayList(keys.Count);
+			foreach (object key in keys)
+			{
+				list.Add(hash[key]);
+			}
+			return list;
+		}
+	}
+
+	public virtual object this[object k]
+	{
+		get
+		{
+			return hash[k];
+		}
+		set
+		{
+			if (!hash.Contains(k))
+			{
+				keys.Add(k);
+			}
+			hash[k] = value;
+		}
+	}
+
+	public virtual void Add(object k, object v)
+	{
+		hash.Add(k, v);
+		keys.Add(k);
+	}
+
+	public virtual void Clear()
+	{
+		hash.Clear();
+		keys.Clear();
+	}
+
+	public virtual bool Contains(object k)
+	{
+		return hash.Contains(k);
+	}
+
+	public virtual void CopyTo(Array array, int index)
+	{
+		foreach (object key in keys)
+		{
+			array.SetValue(hash[key], index++);
+		}
+	}
+
+	IEnumerator IEnumerable.GetEnumerator()
+	{
+		return GetEnumerator();
+	}
+
+	public virtual IDictionaryEnumerator GetEnumerator()
+	{
+		return new LinkedDictionaryEnumerator(this);
+	}
+
+	public virtual void Remove(object k)
+	{
+		hash.Remove(k);
+		keys.Remove(k);
+	}
+}