01: /*
02: * Copyright 2004 Brian S O'Neill
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.cojen.classfile.constant;
18:
19: import java.io.DataOutput;
20: import java.io.IOException;
21: import org.cojen.classfile.ConstantInfo;
22: import org.cojen.classfile.ConstantPool;
23:
24: /**
25: * This class corresponds to the CONSTANT_String_info structure as defined in
26: * section 4.4.3 of <i>The Java Virtual Machine Specification</i>.
27: *
28: * @author Brian S O'Neill
29: */
30: public class ConstantStringInfo extends ConstantInfo {
31: private final ConstantUTFInfo mStringConstant;
32:
33: public ConstantStringInfo(ConstantUTFInfo constant) {
34: super (TAG_STRING);
35: mStringConstant = constant;
36: }
37:
38: public ConstantStringInfo(ConstantPool cp, String str) {
39: super (TAG_STRING);
40: mStringConstant = cp.addConstantUTF(str);
41: }
42:
43: public String getValue() {
44: return mStringConstant.getValue();
45: }
46:
47: public int hashCode() {
48: return mStringConstant.hashCode();
49: }
50:
51: public boolean equals(Object obj) {
52: if (this == obj) {
53: return true;
54: }
55: if (obj instanceof ConstantStringInfo) {
56: ConstantStringInfo other = (ConstantStringInfo) obj;
57: return mStringConstant.equals(other.mStringConstant);
58: }
59: return false;
60: }
61:
62: protected boolean hasPriority() {
63: return true;
64: }
65:
66: public void writeTo(DataOutput dout) throws IOException {
67: super .writeTo(dout);
68: dout.writeShort(mStringConstant.getIndex());
69: }
70:
71: public String toString() {
72: return "CONSTANT_String_info: " + getValue();
73: }
74: }
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