1 files changed, 0 insertions, 143 deletions
diff --git a/mcs/class/System/System.Text.RegularExpressions/cache.cs b/mcs/class/System/System.Text.RegularExpressions/cache.cs
deleted file mode 100644
index b77278fee80..00000000000
--- a/mcs/class/System/System.Text.RegularExpressions/cache.cs
+++ /dev/null
@@ -1,143 +0,0 @@
-//
-// assembly:	System
-// namespace:	System.Text.RegularExpressions
-// file:	cache.cs
-//
-// author:	Dan Lewis (dlewis@gmx.co.uk)
-// 		(c) 2002
-
-using System;
-using System.Collections;
-
-namespace System.Text.RegularExpressions {
-
-	class FactoryCache {
-		public FactoryCache (int capacity) {
-			this.capacity = capacity;
-			this.factories = new Hashtable (capacity);
-			this.mru_list = new MRUList ();
-		}
-
-		public void Add (string pattern, RegexOptions options, IMachineFactory factory) {
-			lock (this) {
-				Key k = new Key (pattern, options);
-
-				while (factories.Count >= capacity) {
-					object victim = mru_list.Evict ();
-					if (victim != null)
-						factories.Remove ((Key)victim);
-				}
-				
-				factories[k] = factory;
-				mru_list.Use (k);
-			}
-		}
-
-		public IMachineFactory Lookup (string pattern, RegexOptions options) {
-			lock (this) {
-				Key k = new Key (pattern, options);
-				if (factories.Contains (k)) {
-					mru_list.Use (k);
-					return (IMachineFactory)factories[k];
-				}
-			}
-
-			return null;
-		}
-
-		private int capacity;
-		private Hashtable factories;
-		private MRUList mru_list;
-
-		class Key {
-			public string pattern;
-			public RegexOptions options;
-
-			public Key (string pattern, RegexOptions options) {
-				this.pattern = pattern;
-				this.options = options;
-			}
-			
-			public override int GetHashCode () {
-				return pattern.GetHashCode () ^ (int)options;
-			}
-
-			public override bool Equals (object o) {
-				if (o == null || !(o is Key))
-					return false;
-
-				Key k = (Key)o;
-				return options == k.options && pattern.Equals (k.pattern);
-			}
-
-			public override string ToString () {
-				return "('" + pattern + "', [" + options + "])";
-			}
-		}
-	}
-
-	class MRUList {
-		public MRUList () {
-			head = tail = null;
-		}
-
-		public void Use (object o) {
-			Node node;
-
-			if (head == null) {
-				node = new Node (o);
-				head = tail = node;
-				return;
-			}
-
-			node = head;
-			while (node != null && !o.Equals (node.value))
-				node = node.previous;
-
-			if (node == null)
-				node = new Node (o);
-			else {
-				if (node == head)
-					return;
-
-				if (node == tail)
-					tail = node.next;
-				else
-					node.previous.next = node.next;
-
-				node.next.previous = node.previous;
-			}
-
-			head.next = node;
-			node.previous = head;
-			node.next = null;
-			head = node;
-		}
-
-		public object Evict () {
-			if (tail == null)
-				return null;
-
-			object o = tail.value;
-			tail = tail.next;
-
-			if (tail == null)
-				head = null;
-			else
-				tail.previous = null;
-
-			return o;
-		}
-
-		private Node head, tail;
-
-		private class Node {
-			public object value;
-			public Node previous, next;
-
-			public Node (object value) {
-				this.value = value;
-			}
-		}
-	}
-}