From 36295808688ff6360e22846b3a9017740bf36719 Mon Sep 17 00:00:00 2001
From: Tahg <tahgtahv@gmail.com>
Date: Mon, 7 Feb 2011 00:56:07 -0500
Subject: Chunk fetching improvements

---
 src/main/java/net/minecraft/server/LongHash.java | 36 ++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/main/java/net/minecraft/server/LongHash.java

(limited to 'src/main/java/net/minecraft/server/LongHash.java')

diff --git a/src/main/java/net/minecraft/server/LongHash.java b/src/main/java/net/minecraft/server/LongHash.java
new file mode 100644
index 00000000..06da49ab
--- /dev/null
+++ b/src/main/java/net/minecraft/server/LongHash.java
@@ -0,0 +1,36 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package net.minecraft.server;
+
+/**
+ *
+ * @author Nathan
+ */
+public abstract class LongHash<V> {
+    static long toLong(int msw, int lsw) {
+        return ((long)msw << 32) + lsw - Integer.MIN_VALUE;
+    }
+    
+    static int msw(long l) {
+        return (int) (l >> 32);
+    }
+    
+    static int lsw(long l) {
+        return (int) (l & 0xFFFFFFFF) + Integer.MIN_VALUE;
+    }
+
+    public boolean containsKey(int msw, int lsw) {
+        return containsKey(toLong(msw, lsw));
+    }
+
+    public void remove(int msw, int lsw) {
+        remove(toLong(msw, lsw));
+    }
+    
+    public abstract boolean containsKey(long key);
+    
+    public abstract void remove(long key);
+}
-- 
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