| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2013 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 char 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; |
| } |
| } |