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.Constants;
57 import org.apache.bcel.ExceptionConstants;
58
59 /***
60 * Super class for the xRETURN family of instructions.
61 *
62 * @version $Id: ReturnInstruction.java,v 1.1.1.1 2001/10/29 20:00:26 jvanzyl Exp $
63 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
64 */
65 public abstract class ReturnInstruction extends Instruction
66 implements ExceptionThrower, TypedInstruction, StackConsumer {
67 /***
68 * Empty constructor needed for the Class.newInstance() statement in
69 * Instruction.readInstruction(). Not to be used otherwise.
70 */
71 ReturnInstruction() {}
72
73 /***
74 * @param opcode of instruction
75 */
76 protected ReturnInstruction(short opcode) {
77 super(opcode, (short)1);
78 }
79
80 public Type getType() {
81 switch(opcode) {
82 case Constants.IRETURN: return Type.INT;
83 case Constants.LRETURN: return Type.LONG;
84 case Constants.FRETURN: return Type.FLOAT;
85 case Constants.DRETURN: return Type.DOUBLE;
86 case Constants.ARETURN: return Type.OBJECT;
87 case Constants.RETURN: return Type.VOID;
88
89 default: // Never reached
90 throw new ClassGenException("Unknown type " + opcode);
91 }
92 }
93
94 public Class[] getExceptions() {
95 return new Class[] { ExceptionConstants.ILLEGAL_MONITOR_STATE };
96 }
97
98 /*** @return type associated with the instruction
99 */
100 public Type getType(ConstantPoolGen cp) {
101 return getType();
102 }
103 }
104
This page was automatically generated by Maven