    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one
    003 * or more contributor license agreements.  See the NOTICE file
    004 * distributed with this work for additional information
    005 * regarding copyright ownership.  The ASF licenses this file
    006 * to you under the Apache License, Version 2.0 (the
    007 * "License"); you may not use this file except in compliance
    008 * with the License.  You may obtain a copy of the License at
    009 *
    010 *   https://www.apache.org/licenses/LICENSE-2.0
    011 *
    012 * Unless required by applicable law or agreed to in writing,
    013 * software distributed under the License is distributed on an
    014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    015 * KIND, either express or implied.  See the License for the
    016 * specific language governing permissions and limitations
    017 * under the License.
    018 */
    019package org.apache.bcel.generic;
    020
    021import java.io.DataOutputStream;
    022import java.io.IOException;
    023
    024import org.apache.bcel.classfile.AnnotationElementValue;
    025import org.apache.bcel.classfile.ElementValue;
    026
    027/**
    028 * Generates annotation element values.
    029 *
    030 * @since 6.0
    031 */
    032public class AnnotationElementValueGen extends ElementValueGen {
    033    // For annotation element values, this is the annotation
    034    private final AnnotationEntryGen a;
    035
    036    /**
    037     * Constructs an AnnotationElementValueGen.
    038     *
    039     * @param value the annotation element value.
    040     * @param cpool the constant pool generator.
    041     * @param copyPoolEntries whether to copy pool entries.
    042     */
    043    public AnnotationElementValueGen(final AnnotationElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries) {
    044        super(ANNOTATION, cpool);
    045        a = new AnnotationEntryGen(value.getAnnotationEntry(), cpool, copyPoolEntries);
    046    }
    047
    048    /**
    049     * Constructs an AnnotationElementValueGen.
    050     *
    051     * @param a the annotation entry generator.
    052     * @param cpool the constant pool generator.
    053     */
    054    public AnnotationElementValueGen(final AnnotationEntryGen a, final ConstantPoolGen cpool) {
    055        super(ANNOTATION, cpool);
    056        this.a = a;
    057    }
    058
    059    /**
    060     * Constructs an AnnotationElementValueGen.
    061     *
    062     * @param type the type.
    063     * @param annotation the annotation.
    064     * @param cpool the constant pool generator.
    065     */
    066    public AnnotationElementValueGen(final int type, final AnnotationEntryGen annotation, final ConstantPoolGen cpool) {
    067        super(type, cpool);
    068        if (type != ANNOTATION) {
    069            throw new IllegalArgumentException("Only element values of type annotation can be built with this ctor - type specified: " + type);
    070        }
    071        this.a = annotation;
    072    }
    073
    074    @Override
    075    public void dump(final DataOutputStream dos) throws IOException {
    076        dos.writeByte(super.getElementValueType()); // u1 type of value (ANNOTATION == '@')
    077        a.dump(dos);
    078    }
    079
    080    /**
    081     * Gets the annotation.
    082     *
    083     * @return the annotation.
    084     */
    085    public AnnotationEntryGen getAnnotation() {
    086        return a;
    087    }
    088
    089    /**
    090     * Returns an immutable variant of this AnnotationElementValueGen.
    091     *
    092     * @return an immutable variant of this AnnotationElementValueGen.
    093     */
    094    @Override
    095    public ElementValue getElementValue() {
    096        return new AnnotationElementValue(super.getElementValueType(), a.getAnnotation(), getConstantPool().getConstantPool());
    097    }
    098
    099    @Override
    100    public String stringifyValue() {
    101        throw new UnsupportedOperationException("Not implemented yet");
    102    }
    103}