Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-after / core refactoring / org / eclipse / jdt / internal / corext / refactoring / typeconstraints2 / SubTypeConstraint2.java

diff --git a/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/typeconstraints2/SubTypeConstraint2.java b/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/typeconstraints2/SubTypeConstraint2.java
new file mode 100644 (file)
index 0000000..956a659
--- /dev/null
+++ b/case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/typeconstraints2/SubTypeConstraint2.java
@@ -0,0 +1,64 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.corext.refactoring.typeconstraints2;
+
+import org.eclipse.core.runtime.Assert;
+
+public final class SubTypeConstraint2 implements ITypeConstraint2 {
+
+       private final ConstraintVariable2 fAncestor;
+
+       private final ConstraintVariable2 fDescendant;
+
+       public SubTypeConstraint2(final ConstraintVariable2 descendant, final ConstraintVariable2 ancestor) {
+               Assert.isNotNull(descendant);
+               Assert.isNotNull(ancestor);
+               fDescendant= descendant;
+               fAncestor= ancestor;
+       }
+
+       /*
+        * @see java.lang.Object#equals(java.lang.Object)
+        */
+       @Override
+       public final boolean equals(Object other) {
+               // can use object identity on ConstraintVariables, since we have the stored (or to be stored) objects
+               if (other.getClass() != SubTypeConstraint2.class)
+                       return false;
+
+               ITypeConstraint2 otherTC= (ITypeConstraint2) other;
+               return fDescendant == otherTC.getLeft() && fAncestor == otherTC.getRight();
+       }
+
+       public final ConstraintVariable2 getLeft() {
+               return fDescendant;
+       }
+
+       public final ConstraintVariable2 getRight() {
+               return fAncestor;
+       }
+
+       /*
+        * @see java.lang.Object#hashCode()
+        */
+       @Override
+       public final int hashCode() {
+               return fDescendant.hashCode() ^ 37 * fAncestor.hashCode();
+       }
+
+       /*
+        * @see java.lang.Object#toString()
+        */
+       @Override
+       public final String toString() {
+               return fDescendant.toString() + " <= " + fAncestor.toString(); //$NON-NLS-1$
+       }
+}