Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.datastructures / src / org / simantics / utils / datastructures / EmptyIterator.java

diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java
new file mode 100644 (file)
index 0000000..ae70dc5
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/EmptyIterator.java
@@ -0,0 +1,37 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.datastructures;\r
+\r
+import java.util.Iterator;\r
+import java.util.NoSuchElementException;\r
+\r
+public final class EmptyIterator<T> implements Iterator<T> {\r
+\r
+       @Override\r
+       public boolean hasNext() {              \r
+               return false;\r
+       }\r
+\r
+       @Override\r
+       public T next() {\r
+               throw new NoSuchElementException();             \r
+       }\r
+\r
+       @Override\r
+       public void remove() {\r
+               throw new IllegalStateException();              \r
+       }\r
+\r
+       @SuppressWarnings({ "rawtypes" })\r
+    static public final EmptyIterator instance = new EmptyIterator();  \r
+\r
+}\r