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 java.io.IOException; 1969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport java.lang.reflect.Method; 2069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.ClassPool; 2269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.bytecode.ConstPool; 2369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.bytecode.Descriptor; 2469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal/** 2669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Enum constant value. 2769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 2869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @author <a href="mailto:bill@jboss.org">Bill Burke</a> 2969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @author Shigeru Chiba 3069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 3169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpublic class EnumMemberValue extends MemberValue { 3269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal int typeIndex, valueIndex; 3369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 3569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Constructs an enum constant value. The initial value is specified 3669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * by the constant pool entries at the given indexes. 3769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 3869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param type the index of a CONSTANT_Utf8_info structure 3969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * representing the enum type. 4069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param value the index of a CONSTANT_Utf8_info structure. 4169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * representing the enum value. 4269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 4369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public EnumMemberValue(int type, int value, ConstPool cp) { 4469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super('e', cp); 4569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal this.typeIndex = type; 4669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal this.valueIndex = value; 4769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 4869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 4969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 5069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Constructs an enum constant value. 5169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * The initial value is not specified. 5269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 5369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public EnumMemberValue(ConstPool cp) { 5469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super('e', cp); 5569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal typeIndex = valueIndex = 0; 5669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 5769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 5869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal Object getValue(ClassLoader cl, ClassPool cp, Method m) 5969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal throws ClassNotFoundException 6069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal { 6169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal try { 6269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return getType(cl).getField(getValue()).get(null); 6369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 6469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal catch (NoSuchFieldException e) { 6569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal throw new ClassNotFoundException(getType() + "." + getValue()); 6669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 6769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal catch (IllegalAccessException e) { 6869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal throw new ClassNotFoundException(getType() + "." + getValue()); 6969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 7069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 7169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 7269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal Class getType(ClassLoader cl) throws ClassNotFoundException { 7369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return loadClass(cl, getType()); 7469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 7569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 7669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 7769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Obtains the enum type name. 7869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 7969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @return a fully-qualified type name. 8069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 8169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String getType() { 8269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return Descriptor.toClassName(cp.getUtf8Info(typeIndex)); 8369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 8469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 8569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 8669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Changes the enum type name. 8769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 8869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * @param typename a fully-qualified type name. 8969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 9069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void setType(String typename) { 9169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal typeIndex = cp.addUtf8Info(Descriptor.of(typename)); 9269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 9369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 9469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 9569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Obtains the name of the enum constant value. 9669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 9769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String getValue() { 9869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return cp.getUtf8Info(valueIndex); 9969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 10069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 10169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 10269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Changes the name of the enum constant value. 10369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 10469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void setValue(String name) { 10569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal valueIndex = cp.addUtf8Info(name); 10669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 10769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 10869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String toString() { 10969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return getType() + "." + getValue(); 11069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 11169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 11269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 11369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Writes the value. 11469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 11569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void write(AnnotationsWriter writer) throws IOException { 11669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal writer.enumConstValue(cp.getUtf8Info(typeIndex), getValue()); 11769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 11869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 11969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 12069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Accepts a visitor. 12169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 12269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void accept(MemberValueVisitor visitor) { 12369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal visitor.visitEnumMemberValue(this); 12469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 12569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal} 126