Closes #1283: Add custom Callable to prevent memory leaks

src/main/java/appeng/util/IWorldCallable.java

@@ -0,0 +1,49 @@
+/*
+ * This file is part of Applied Energistics 2.
+ * Copyright (c) 2013 - 2015, AlgorithmX2, All rights reserved.
+ *
+ * Applied Energistics 2 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Applied Energistics 2 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
+ */
+
+package appeng.util;
+
+
+import java.util.concurrent.Callable;
+
+import javax.annotation.Nullable;
+
+import net.minecraft.world.World;
+
+
+/**
+ * An interface similar to {@link Callable}, but allowing to pass the {@link World} when calling.
+ *
+ * @see Callable
+ * @author yueh
+ * @version rv3
+ * @since rv3
+ */
+public interface IWorldCallable<T>
+{
+	/**
+	 * Similar to {@link Callable#call()}
+	 *
+	 * @see Callable#call()
+	 * @param world
+	 * @return
+	 * @throws Exception
+	 */
+	@Nullable
+	T call( @Nullable World world ) throws Exception;
+}