01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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;
21: import java.io.IOException;
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 cpStream) throws IOException {
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 toString() {
55: return "String Constant Pool Entry for " + getValue() + "["
56: + 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: }
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