1 files changed, 81 insertions, 0 deletions
diff --git a/propertysheet/src/org/eclipse/wb/internal/core/utils/Pair.java b/propertysheet/src/org/eclipse/wb/internal/core/utils/Pair.java
new file mode 100644
index 0000000..3df0e9b
--- /dev/null
+++ b/propertysheet/src/org/eclipse/wb/internal/core/utils/Pair.java
@@ -0,0 +1,81 @@
+/*******************************************************************************
+ * Copyright (c) 2011 Google, Inc.
+ * 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:
+ *    Google, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.wb.internal.core.utils;
+
+import com.google.common.base.Objects;
+
+/**
+ * Pair of two objects.
+ *
+ * @author scheglov_ke
+ * @coverage core.util
+ */
+public final class Pair<L, R> {
+  private final L left;
+  private final R right;
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Constructor
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  public Pair(L left, R right) {
+    this.left = left;
+    this.right = right;
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Object
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  @Override
+  public boolean equals(Object o) {
+    if (o == this) {
+      return true;
+    }
+    if (!(o instanceof Pair<?, ?>)) {
+      return false;
+    }
+    Pair<?, ?> other = (Pair<?, ?>) o;
+    return Objects.equal(getLeft(), other.getLeft())
+        && Objects.equal(getRight(), other.getRight());
+  }
+
+  @Override
+  public int hashCode() {
+    int hLeft = getLeft() == null ? 0 : getLeft().hashCode();
+    int hRight = getRight() == null ? 0 : getRight().hashCode();
+    return hLeft + 37 * hRight;
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Access
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  public L getLeft() {
+    return left;
+  }
+
+  public R getRight() {
+    return right;
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Factory
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  public static <L, R> Pair<L, R> create(L left, R right) {
+    return new Pair<L, R>(left, right);
+  }
+}
+\ No newline at end of file