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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  package org.apache.bcel.classfile;
19  
20  import java.io.DataOutputStream;
21  import java.io.IOException;
22  
23  import org.apache.bcel.Const;
24  
25  /**
26   * an annotation's element value pair
27   *
28   * @version $Id: ElementValuePair
29   * @since 6.0
30   */
31  public class ElementValuePair
32  {
33      private final ElementValue elementValue;
34  
35      private final ConstantPool constantPool;
36  
37      private final int elementNameIndex;
38  
39      public ElementValuePair(final int elementNameIndex, final ElementValue elementValue,
40              final ConstantPool constantPool)
41      {
42          this.elementValue = elementValue;
43          this.elementNameIndex = elementNameIndex;
44          this.constantPool = constantPool;
45      }
46  
47      public String getNameString()
48      {
49          final ConstantUtf8 c = (ConstantUtf8) constantPool.getConstant(
50                  elementNameIndex, Const.CONSTANT_Utf8);
51          return c.getBytes();
52      }
53  
54      public final ElementValue getValue()
55      {
56          return elementValue;
57      }
58  
59      public int getNameIndex()
60      {
61          return elementNameIndex;
62      }
63  
64      public String toShortString()
65      {
66          final StringBuilder result = new StringBuilder();
67          result.append(getNameString()).append("=").append(
68                  getValue().toShortString());
69          return result.toString();
70      }
71  
72      protected void dump(final DataOutputStream dos) throws IOException {
73          dos.writeShort(elementNameIndex); // u2 name of the element
74          elementValue.dump(dos);
75      }
76  }