From 87dd7c34c576bb7817f7a2fbf502fc331f407901 Mon Sep 17 00:00:00 2001
From: bdew <blackdew@gmail.com>
Date: Tue, 12 Aug 2014 12:41:10 +0300
Subject: [PATCH] Added DataSlotOption

---
 src/net/bdew/lib/data/DataSlotOption.scala | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/net/bdew/lib/data/DataSlotOption.scala

diff --git a/src/net/bdew/lib/data/DataSlotOption.scala b/src/net/bdew/lib/data/DataSlotOption.scala
new file mode 100644
index 0000000..74394be
--- /dev/null
+++ b/src/net/bdew/lib/data/DataSlotOption.scala
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) bdew, 2013 - 2014
+ * https://github.com/bdew/bdlib
+ *
+ * This mod is distributed under the terms of the Minecraft Mod Public
+ * License 1.0, or MMPL. Please check the contents of the license located in
+ * https://raw.github.com/bdew/bdlib/master/MMPL-1.0.txt
+ */
+
+package net.bdew.lib.data
+
+import net.bdew.lib.data.base.DataSlotVal
+
+abstract class DataSlotOption[T] extends DataSlotVal[Option[T]] {
+  override var cval: Option[T] = None
+
+  def set(v: T) {
+    if (v == null) sys.error("Null should never be used with DataSlotOption")
+    cval = Some(v)
+  }
+
+  def unset() {
+    cval = None
+  }
+
+  override def isSame(v: Option[T]) = {
+    if (v == null) sys.error("Null should never be used with DataSlotOption")
+    super.isSame(v)
+  }
+  override def :=(that: Option[T]) = {
+    if (that == null) sys.error("Null should never be used with DataSlotOption")
+    super.:=(that)
+  }
+  override def :!=(that: Option[T]) = {
+    if (that == null) sys.error("Null should never be used with DataSlotOption")
+    super.:!=(that)
+  }
+  override def :==(that: Option[T]) = {
+    if (that == null) sys.error("Null should never be used with DataSlotOption")
+    super.:==(that)
+  }
+  override def update(v: Option[T]) = {
+    if (v == null) sys.error("Null should never be used with DataSlotOption")
+    super.update(v)
+  }
+}