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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  package org.apache.bcel.generic;
19  
20  import java.io.DataOutputStream;
21  import java.io.IOException;
22  
23  import org.apache.bcel.Const;
24  import org.apache.bcel.ExceptionConst;
25  
26  /**
27   * INVOKESTATIC - Invoke a class (static) method
28   *
29   * <PRE>Stack: ..., [arg1, [arg2 ...]] -&gt; ...</PRE>
30   *
31   * @version $Id: INVOKESTATIC.html 1021978 2017-12-09 17:38:21Z ggregory $
32   * @see
33   * <a href="http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-6.html#jvms-6.5.invokestatic">
34   * The invokestatic instruction in The Java Virtual Machine Specification</a>
35   */
36  public class INVOKESTATIC extends InvokeInstruction {
37  
38      /**
39       * Empty constructor needed for Instruction.readInstruction.
40       * Not to be used otherwise.
41       */
42      INVOKESTATIC() {
43      }
44  
45  
46      public INVOKESTATIC(final int index) {
47          super(Const.INVOKESTATIC, index);
48      }
49  
50  
51      /**
52       * Dump instruction as byte code to stream out.
53       * @param out Output stream
54       */
55      @Override
56      public void dump( final DataOutputStream out ) throws IOException {
57        out.writeByte(super.getOpcode());
58        out.writeShort(super.getIndex());
59      }
60  
61      @Override
62      public Class<?>[] getExceptions() {
63          return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION,
64              ExceptionConst.UNSATISFIED_LINK_ERROR,
65              ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR);
66      }
67  
68  
69      /**
70       * Call corresponding visitor method(s). The order is:
71       * Call visitor methods of implemented interfaces first, then
72       * call methods according to the class hierarchy in descending order,
73       * i.e., the most specific visitXXX() call comes last.
74       *
75       * @param v Visitor object
76       */
77      @Override
78      public void accept( final Visitor v ) {
79          v.visitExceptionThrower(this);
80          v.visitTypedInstruction(this);
81          v.visitStackConsumer(this);
82          v.visitStackProducer(this);
83          v.visitLoadClass(this);
84          v.visitCPInstruction(this);
85          v.visitFieldOrMethod(this);
86          v.visitInvokeInstruction(this);
87          v.visitINVOKESTATIC(this);
88      }
89  }