KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tools > ant > taskdefs > optional > depend > constantpool > StringCPInfo


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.tools.ant.taskdefs.optional.depend.constantpool;
19
20 import java.io.DataInputStream JavaDoc;
21 import java.io.IOException JavaDoc;
22
23 /**
24  * A String Constant Pool Entry. The String info contains an index into the
25  * constant pool where a UTF8 string is stored.
26  *
27  */
28 public class StringCPInfo extends ConstantCPInfo {
29
30     /** Constructor. */
31     public StringCPInfo() {
32         super(CONSTANT_STRING, 1);
33     }
34
35     /**
36      * read a constant pool entry from a class stream.
37      *
38      * @param cpStream the DataInputStream which contains the constant pool
39      * entry to be read.
40      * @exception IOException if there is a problem reading the entry from
41      * the stream.
42      */
43     public void read(DataInputStream JavaDoc cpStream) throws IOException JavaDoc {
44         index = cpStream.readUnsignedShort();
45
46         setValue("unresolved");
47     }
48
49     /**
50      * Print a readable version of the constant pool entry.
51      *
52      * @return the string representation of this constant pool entry.
53      */
54     public String JavaDoc toString() {
55         return "String Constant Pool Entry for "
56             + getValue() + "[" + index + "]";
57     }
58
59     /**
60      * Resolve this constant pool entry with respect to its dependents in
61      * the constant pool.
62      *
63      * @param constantPool the constant pool of which this entry is a member
64      * and against which this entry is to be resolved.
65      */
66     public void resolve(ConstantPool constantPool) {
67         setValue(((Utf8CPInfo) constantPool.getEntry(index)).getValue());
68         super.resolve(constantPool);
69     }
70
71     /** the index into the constant pool containing the string's content */
72     private int index;
73 }
74
75
Popular Tags