- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 2004 Bill Burke. All Rights Reserved.
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. Alternatively, the contents of this file may be used under
- * the terms of the GNU Lesser General Public License Version 2.1 or later,
- * or the Apache License Version 2.0.
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- */
-
- package javassist.bytecode.annotation;
-
- import java.io.IOException;
- import java.lang.reflect.Method;
-
- import javassist.ClassPool;
- import javassist.bytecode.ConstPool;
- import javassist.bytecode.Descriptor;
-
- /**
- * Enum constant value.
- *
- * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
- * @author Shigeru Chiba
- */
- public class EnumMemberValue extends MemberValue {
- int typeIndex, valueIndex;
-
- /**
- * Constructs an enum constant value. The initial value is specified
- * by the constant pool entries at the given indexes.
- *
- * @param type the index of a CONSTANT_Utf8_info structure
- * representing the enum type.
- * @param value the index of a CONSTANT_Utf8_info structure.
- * representing the enum value.
- */
- public EnumMemberValue(int type, int value, ConstPool cp) {
- super('e', cp);
- this.typeIndex = type;
- this.valueIndex = value;
- }
-
- /**
- * Constructs an enum constant value.
- * The initial value is not specified.
- */
- public EnumMemberValue(ConstPool cp) {
- super('e', cp);
- typeIndex = valueIndex = 0;
- }
-
- Object getValue(ClassLoader cl, ClassPool cp, Method m)
- throws ClassNotFoundException
- {
- try {
- return getType(cl).getField(getValue()).get(null);
- }
- catch (NoSuchFieldException e) {
- throw new ClassNotFoundException(getType() + "." + getValue());
- }
- catch (IllegalAccessException e) {
- throw new ClassNotFoundException(getType() + "." + getValue());
- }
- }
-
- Class getType(ClassLoader cl) throws ClassNotFoundException {
- return loadClass(cl, getType());
- }
-
- /**
- * Obtains the enum type name.
- *
- * @return a fully-qualified type name.
- */
- public String getType() {
- return Descriptor.toClassName(cp.getUtf8Info(typeIndex));
- }
-
- /**
- * Changes the enum type name.
- *
- * @param typename a fully-qualified type name.
- */
- public void setType(String typename) {
- typeIndex = cp.addUtf8Info(Descriptor.of(typename));
- }
-
- /**
- * Obtains the name of the enum constant value.
- */
- public String getValue() {
- return cp.getUtf8Info(valueIndex);
- }
-
- /**
- * Changes the name of the enum constant value.
- */
- public void setValue(String name) {
- valueIndex = cp.addUtf8Info(name);
- }
-
- public String toString() {
- return getType() + "." + getValue();
- }
-
- /**
- * Writes the value.
- */
- public void write(AnnotationsWriter writer) throws IOException {
- writer.enumConstValue(cp.getUtf8Info(typeIndex), getValue());
- }
-
- /**
- * Accepts a visitor.
- */
- public void accept(MemberValueVisitor visitor) {
- visitor.visitEnumMemberValue(this);
- }
- }
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