1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.bcel.generic;
20
21 import org.apache.bcel.ExceptionConst;
22
23 /**
24 * MONITORENTER - Enter monitor for object
25 *
26 * <PRE>
27 * Stack: ..., objectref -> ...
28 * </PRE>
29 */
30 public class MONITORENTER extends Instruction implements ExceptionThrower, StackConsumer {
31
32 public MONITORENTER() {
33 super(org.apache.bcel.Const.MONITORENTER, (short) 1);
34 }
35
36 /**
37 * Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call
38 * methods according to the class hierarchy in descending order, i.e., the most specific visitXXX() call comes last.
39 *
40 * @param v Visitor object
41 */
42 @Override
43 public void accept(final Visitor v) {
44 v.visitExceptionThrower(this);
45 v.visitStackConsumer(this);
46 v.visitMONITORENTER(this);
47 }
48
49 @Override
50 public Class<?>[] getExceptions() {
51 return new Class[] {ExceptionConst.NULL_POINTER_EXCEPTION};
52 }
53 }