1 files changed, 126 insertions, 0 deletions
diff --git a/src/proguard/classfile/attribute/annotation/ElementValue.java b/src/proguard/classfile/attribute/annotation/ElementValue.java
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+++ b/src/proguard/classfile/attribute/annotation/ElementValue.java
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+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.classfile.attribute.annotation;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
+import proguard.classfile.visitor.MemberVisitor;
+
+/**
+ * This abstract class represents an element value that is attached to an
+ * annotation or an annotation default. Specific types of element values are
+ * subclassed from it.
+ *
+ * @author Eric Lafortune
+ */
+public abstract class ElementValue implements VisitorAccepter
+{
+    /**
+     * An extra field for the optional element name. It is used in element value
+     * pairs of annotations. Otherwise, it is 0.
+     */
+    public int u2elementNameIndex;
+
+    /**
+     * An extra field pointing to the referenced <code>Clazz</code>
+     * object, if applicable. This field is typically filled out by the
+     * <code>{@link proguard.classfile.util.ClassReferenceInitializer}</code>.
+     */
+    public Clazz referencedClass;
+
+    /**
+     * An extra field pointing to the referenced <code>Method</code>
+     * object, if applicable. This field is typically filled out by the
+     * <code>{@link proguard.classfile.util.ClassReferenceInitializer}</code>.
+     */
+    public Method referencedMethod;
+
+    /**
+     * An extra field in which visitors can store information.
+     */
+    public Object visitorInfo;
+
+
+    /**
+     * Creates an uninitialized ElementValue.
+     */
+    protected ElementValue()
+    {
+    }
+
+
+    /**
+     * Creates an initialized ElementValue.
+     */
+    protected ElementValue(int u2elementNameIndex)
+    {
+        this.u2elementNameIndex = u2elementNameIndex;
+    }
+
+
+    /**
+     * Returns the element name.
+     */
+    public String getMethodName(Clazz clazz)
+    {
+        return clazz.getString(u2elementNameIndex);
+    }
+
+
+    // Abstract methods to be implemented by extensions.
+
+    /**
+     * Returns the tag of this element value.
+     */
+    public abstract int getTag();
+
+
+    /**
+     * Accepts the given visitor.
+     */
+    public abstract void accept(Clazz clazz, Annotation annotation, ElementValueVisitor elementValueVisitor);
+
+
+
+    /**
+     * Applies the given visitor to the referenced method.
+     */
+    public void referencedMethodAccept(MemberVisitor memberVisitor)
+    {
+        if (referencedMethod != null)
+        {
+            referencedMethod.accept(referencedClass, memberVisitor);
+        }
+    }
+
+
+    // Implementations for VisitorAccepter.
+
+    public Object getVisitorInfo()
+    {
+        return visitorInfo;
+    }
+
+    public void setVisitorInfo(Object visitorInfo)
+    {
+        this.visitorInfo = visitorInfo;
+    }
+}