| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| /* |
| * Contributor(s): Thomas Ball |
| */ |
| |
| package org.netbeans.modules.classfile; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| /** |
| * ElementValue: the value portion of the name-value pair of a |
| * single annotation element. |
| * |
| * @author Thomas Ball |
| */ |
| public abstract class ElementValue { |
| static ElementValue load(DataInputStream in, ConstantPool pool, |
| boolean runtimeVisible) |
| throws IOException { |
| char tag = (char)in.readByte(); |
| switch (tag) { |
| case 'e': return loadEnumValue(in, pool); |
| case 'c': { |
| int classType = in.readUnsignedShort(); |
| return new ClassElementValue(pool, classType); |
| } |
| case '@': { |
| Annotation value = |
| Annotation.loadAnnotation(in, pool, runtimeVisible); |
| return new NestedElementValue(pool, value); |
| } |
| case '[': { |
| ElementValue[] values = new ElementValue[in.readUnsignedShort()]; |
| for (int i = 0; i < values.length; i++) |
| values[i] = load(in, pool, runtimeVisible); |
| return new ArrayElementValue(pool, values); |
| } |
| default: |
| assert "BCDFIJSZs".indexOf(tag) >= 0 : "invalid annotation tag"; |
| return new PrimitiveElementValue(pool, in.readUnsignedShort()); |
| } |
| } |
| |
| private static ElementValue loadEnumValue(DataInputStream in, |
| ConstantPool pool) |
| throws IOException { |
| int type = in.readUnsignedShort(); |
| CPEntry cpe = pool.get(type); |
| if (cpe.getTag() == ConstantPool.CONSTANT_FieldRef) { |
| // workaround for 1.5 beta 1 and earlier builds |
| CPFieldInfo fe = (CPFieldInfo)cpe; |
| String enumType = fe.getClassName().getInternalName(); |
| String enumName = fe.getFieldName(); |
| return new EnumElementValue(enumType, enumName); |
| } else { |
| int name = in.readUnsignedShort(); |
| return new EnumElementValue(pool, type, name); |
| } |
| } |
| |
| /* Package-private constructor so that only classes in this |
| * package can subclass. |
| */ |
| ElementValue() { |
| } |
| } |