169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal/* 269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Javassist, a Java-bytecode translator toolkit. 369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Copyright (C) 2004 Bill Burke. All Rights Reserved. 469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * The contents of this file are subject to the Mozilla Public License Version 669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 1.1 (the "License"); you may not use this file except in compliance with 769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * the License. Alternatively, the contents of this file may be used under 869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * the terms of the GNU Lesser General Public License Version 2.1 or later. 969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 1069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Software distributed under the License is distributed on an "AS IS" basis, 1169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 1269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * for the specific language governing rights and limitations under the 1369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * License. 1469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 1569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 1669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpackage javassist.bytecode.annotation; 1769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 1869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.ClassPool; 1969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.bytecode.ConstPool; 2069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.bytecode.Descriptor; 2169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport java.io.IOException; 2269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport java.lang.reflect.Method; 2369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal/** 2569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Class value. 2669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 2769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @author <a href="mailto:bill@jboss.org">Bill Burke</a> 2869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @author Shigeru Chiba 2969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 3069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpublic class ClassMemberValue extends MemberValue { 3169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal int valueIndex; 3269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 3469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Constructs a class value. The initial value is specified 3569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * by the constant pool entry at the given index. 3669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 3769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param index the index of a CONSTANT_Utf8_info structure. 3869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 3969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public ClassMemberValue(int index, ConstPool cp) { 4069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super('c', cp); 4169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal this.valueIndex = index; 4269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 4369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 4469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 4569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Constructs a class value. 4669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 4769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param className the initial value. 4869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 4969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public ClassMemberValue(String className, ConstPool cp) { 5069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super('c', cp); 5169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal setValue(className); 5269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 5369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 5469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 5569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Constructs a class value. 5669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * The initial value is java.lang.Class. 5769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 5869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public ClassMemberValue(ConstPool cp) { 5969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super('c', cp); 6069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal setValue("java.lang.Class"); 6169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 6269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 6369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal Object getValue(ClassLoader cl, ClassPool cp, Method m) 6469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal throws ClassNotFoundException { 6569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal final String classname = getValue(); 6669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal if (classname.equals("void")) 6769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return void.class; 6869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("int")) 6969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return int.class; 7069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("byte")) 7169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return byte.class; 7269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("long")) 7369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return long.class; 7469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("double")) 7569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return double.class; 7669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("float")) 7769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return float.class; 7869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("char")) 7969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return char.class; 8069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("short")) 8169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return short.class; 8269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else if (classname.equals("boolean")) 8369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return boolean.class; 8469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else 8569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return loadClass(cl, classname); 8669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 8769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 8869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal Class getType(ClassLoader cl) throws ClassNotFoundException { 8969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return loadClass(cl, "java.lang.Class"); 9069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 9169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 9269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 9369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Obtains the value of the member. 9469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 9569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @return fully-qualified class name. 9669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 9769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String getValue() { 9869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal String v = cp.getUtf8Info(valueIndex); 9969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return Descriptor.toClassName(v); 10069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 10169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 10269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 10369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Sets the value of the member. 10469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 10569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param newClassName fully-qualified class name. 10669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 10769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void setValue(String newClassName) { 10869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal String setTo = Descriptor.of(newClassName); 10969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal valueIndex = cp.addUtf8Info(setTo); 11069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 11169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 11269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 11369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Obtains the string representation of this object. 11469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 11569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String toString() { 11669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return "<" + getValue() + " class>"; 11769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 11869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 11969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 12069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Writes the value. 12169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 12269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void write(AnnotationsWriter writer) throws IOException { 12369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal writer.classInfoIndex(cp.getUtf8Info(valueIndex)); 12469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 12569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 12669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 12769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Accepts a visitor. 12869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 12969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void accept(MemberValueVisitor visitor) { 13069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal visitor.visitClassMemberValue(this); 13169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 13269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal} 133