1 package org.apache.bcel.generic;
2
3 /* ====================================================================
4 * The Apache Software License, Version 1.1
5 *
6 * Copyright (c) 2001 The Apache Software Foundation. All rights
7 * reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. The end-user documentation included with the redistribution,
22 * if any, must include the following acknowledgment:
23 * "This product includes software developed by the
24 * Apache Software Foundation (http://www.apache.org/)."
25 * Alternately, this acknowledgment may appear in the software itself,
26 * if and wherever such third-party acknowledgments normally appear.
27 *
28 * 4. The names "Apache" and "Apache Software Foundation" and
29 * "Apache BCEL" must not be used to endorse or promote products
30 * derived from this software without prior written permission. For
31 * written permission, please contact apache@apache.org.
32 *
33 * 5. Products derived from this software may not be called "Apache",
34 * "Apache BCEL", nor may "Apache" appear in their name, without
35 * prior written permission of the Apache Software Foundation.
36 *
37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 * SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This software consists of voluntary contributions made by many
52 * individuals on behalf of the Apache Software Foundation. For more
53 * information on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56 import org.apache.bcel.classfile.*;
57
58 /***
59 * Super class for InvokeInstruction and FieldInstruction, since they have
60 * some methods in common!
61 *
62 * @version $Id: FieldOrMethod.java,v 1.1.1.1 2001/10/29 20:00:13 jvanzyl Exp $
63 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
64 */
65 public abstract class FieldOrMethod extends CPInstruction implements LoadClass {
66 /***
67 * Empty constructor needed for the Class.newInstance() statement in
68 * Instruction.readInstruction(). Not to be used otherwise.
69 */
70 FieldOrMethod() {}
71
72 /***
73 * @param index to constant pool
74 */
75 protected FieldOrMethod(short opcode, int index) {
76 super(opcode, index);
77 }
78
79 /*** @return signature of referenced method/field.
80 */
81 public String getSignature(ConstantPoolGen cpg) {
82 ConstantPool cp = cpg.getConstantPool();
83 ConstantCP cmr = (ConstantCP)cp.getConstant(index);
84 ConstantNameAndType cnat = (ConstantNameAndType)cp.getConstant(cmr.getNameAndTypeIndex());
85
86 return ((ConstantUtf8)cp.getConstant(cnat.getSignatureIndex())).getBytes();
87 }
88
89 /*** @return name of referenced method/field.
90 */
91 public String getName(ConstantPoolGen cpg) {
92 ConstantPool cp = cpg.getConstantPool();
93 ConstantCP cmr = (ConstantCP)cp.getConstant(index);
94 ConstantNameAndType cnat = (ConstantNameAndType)cp.getConstant(cmr.getNameAndTypeIndex());
95 return ((ConstantUtf8)cp.getConstant(cnat.getNameIndex())).getBytes();
96 }
97
98 /*** @return name of the referenced class/interface
99 */
100 public String getClassName(ConstantPoolGen cpg) {
101 ConstantPool cp = cpg.getConstantPool();
102 ConstantCP cmr = (ConstantCP)cp.getConstant(index);
103 return cp.getConstantString(cmr.getClassIndex(), org.apache.bcel.Constants.CONSTANT_Class).replace('/', '.');
104 }
105
106 /*** @return type of the referenced class/interface
107 */
108 public ObjectType getClassType(ConstantPoolGen cpg) {
109 return new ObjectType(getClassName(cpg));
110 }
111
112 /*** @return type of the referenced class/interface
113 */
114 public ObjectType getLoadClassType(ConstantPoolGen cpg) {
115 return getClassType(cpg);
116 }
117 }
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