01: /*
02: * Copyright (c) 2003-2008, Franz-Josef Elmer, All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * - Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: * - Redistributions in binary form must reproduce the above copyright notice,
10: * this list of conditions and the following disclaimer in the documentation
11: * and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
15: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
23: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24: */
25: package classycle.classfile;
26:
27: /**
28: * Constant of a <tt>String</tt> value.
29: *
30: * @author Franz-Josef Elmer
31: */
32: public class StringConstant extends Constant {
33: private final int _stringIndex;
34:
35: /**
36: * Creates an instance for the specfied index.
37: * @param pool Constant pool. Needed for resolving the reference.
38: * @param stringIndex Index of an {@link UTF8Constant}.
39: */
40: public StringConstant(Constant[] pool, int stringIndex) {
41: super (pool);
42: _stringIndex = stringIndex;
43: }
44:
45: /** Returns the string value. */
46: public String getString() {
47: String result = null;
48: Constant c = getConstant(_stringIndex);
49: if (c instanceof UTF8Constant) {
50: result = ((UTF8Constant) c).getString();
51: }
52: return result;
53: }
54:
55: /** Returns the constant type and the string value. */
56: public String toString() {
57: return "CONSTANT_String: " + getString();
58: }
59: } //class
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