From a6f0a48f84d21bb2961c54351257b27abb4fbc7e Mon Sep 17 00:00:00 2001
From: TomyLobo <tomylobo@nurfuerspam.de>
Date: Mon, 28 Nov 2011 00:29:38 +0100
Subject: [PATCH] Added a swap function to the expression parser.

---
 .../sk89q/worldedit/expression/runtime/Functions.java | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/sk89q/worldedit/expression/runtime/Functions.java b/src/main/java/com/sk89q/worldedit/expression/runtime/Functions.java
index fcf165de3..4bb811a13 100644
--- a/src/main/java/com/sk89q/worldedit/expression/runtime/Functions.java
+++ b/src/main/java/com/sk89q/worldedit/expression/runtime/Functions.java
@@ -257,7 +257,16 @@ public final class Functions {
         x.assign(xOld * cosF - yOld * sinF);
         y.assign(xOld * sinF + yOld * cosF);
 
-        return 0;
+        return 0.0;
+    }
+
+    public static final double swap(LValue x, LValue y) throws EvaluationException {
+        final double tmp = x.getValue();
+
+        x.assign(y.getValue());
+        y.assign(tmp);
+
+        return 0.0;
     }