Everything is now OpenRA, not OpenRa

OpenRA.FileFormats/Pair.cs

@@ -0,0 +1,75 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System.Collections.Generic;
+
+namespace OpenRA.FileFormats
+{
+	public struct Pair<T, U>
+	{
+		public T First;
+		public U Second;
+
+		public Pair(T first, U second)
+		{
+			First = first;
+			Second = second;
+		}
+
+		static IEqualityComparer<T> tc = EqualityComparer<T>.Default;
+		static IEqualityComparer<U> uc = EqualityComparer<U>.Default;
+
+		public static bool operator ==(Pair<T, U> a, Pair<T, U> b)
+		{
+			return tc.Equals(a.First, b.First) && uc.Equals(a.Second, b.Second);
+		}
+
+		public static bool operator !=(Pair<T, U> a, Pair<T, U> b)
+		{
+			return !(a == b);
+		}
+
+		public override bool Equals(object obj)
+		{
+			if (!(obj is Pair<T, U>))
+				return false;
+
+			return (Pair<T, U>)obj == this;
+		}
+
+		public override int GetHashCode()
+		{
+			return First.GetHashCode() ^ Second.GetHashCode();
+		}
+
+		public Pair<T, U> WithFirst(T t) { return new Pair<T, U>(t, Second); }
+		public Pair<T, U> WithSecond(U u) { return new Pair<T, U>(First, u); }
+
+		public static T AsFirst(Pair<T, U> p) { return p.First; }
+		public static U AsSecond(Pair<T, U> p) { return p.Second; }
+
+        public Pair<U, T> Swap() { return Pair.New(Second, First); }
+	}
+
+    public static class Pair
+    {
+        public static Pair<T, U> New<T, U>(T t, U u) { return new Pair<T, U>(t, u); }
+    }
+}