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diff --git a/src/java/com/sun/gluegen/ConstantDefinition.java b/src/java/com/sun/gluegen/ConstantDefinition.java
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+++ b/src/java/com/sun/gluegen/ConstantDefinition.java
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+/*
+ * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ */
+
+package com.sun.gluegen;
+
+import java.util.*;
+
+/** Represents the definition of a constant which was provided either
+    via a #define statement or through an enum definition. */
+public class ConstantDefinition {
+    private String name;
+    private String value;
+    private String enumName;
+    private Set/*<String>*/ aliases;
+
+    public ConstantDefinition(String name,
+                              String value,
+                              String enumName) {
+        this.name = name;
+        this.value = value;
+        this.enumName = enumName;
+    }
+
+    public boolean equals(ConstantDefinition other) {
+        return (equals(name, other.name) &&
+                equals(value, other.value) &&
+                equals(enumName, other.enumName));
+    }
+
+    private boolean equals(String s1, String s2) {
+        if (s1 == null || s2 == null) {
+            if (s1 == null && s2 == null) {
+                return true;
+            }
+            return false;
+        }
+
+        return s1.equals(s2);
+    }
+
+    public int hashCode() {
+        return name.hashCode();
+    }
+
+    public String getName()     { return name;     }
+    public String getValue()    { return value;    }
+    /** Returns null if this definition was not part of an
+        enumeration, or if the enum was anonymous. */
+    public String getEnumName() { return enumName; }
+
+    public Set/*<String>*/ getAliases() {
+        return aliases;
+    }
+
+    public void addAlias(String alias) {
+        if (aliases == null) {
+            aliases = new LinkedHashSet/*<String>*/();
+        }
+        aliases.add(alias);
+    }
+}