001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.bcel.generic;
020
021import java.io.DataOutputStream;
022import java.io.IOException;
023
024import org.apache.bcel.Const;
025import org.apache.bcel.ExceptionConst;
026
027/**
028 * INVOKESTATIC - Invoke a class (static) method
029 *
030 * <pre>
031 * Stack: ..., [arg1, [arg2 ...]] -&gt; ...
032 * </pre>
033 *
034 * @see <a href="https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-6.html#jvms-6.5.invokestatic"> The invokestatic
035 *      instruction in The Java Virtual Machine Specification</a>
036 */
037public class INVOKESTATIC extends InvokeInstruction {
038
039    /**
040     * Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.
041     */
042    INVOKESTATIC() {
043    }
044
045    /**
046     * Constructs an INVOKESTATIC instruction.
047     *
048     * @param index index into constant pool.
049     */
050    public INVOKESTATIC(final int index) {
051        super(Const.INVOKESTATIC, index);
052    }
053
054    /**
055     * Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call
056     * methods according to the class hierarchy in descending order, that is, the most specific visitXXX() call comes last.
057     *
058     * @param v Visitor object.
059     */
060    @Override
061    public void accept(final Visitor v) {
062        v.visitExceptionThrower(this);
063        v.visitTypedInstruction(this);
064        v.visitStackConsumer(this);
065        v.visitStackProducer(this);
066        v.visitLoadClass(this);
067        v.visitCPInstruction(this);
068        v.visitFieldOrMethod(this);
069        v.visitInvokeInstruction(this);
070        v.visitINVOKESTATIC(this);
071    }
072
073    /**
074     * Dumps instruction as byte code to stream out.
075     *
076     * @param out Output stream.
077     */
078    @Override
079    public void dump(final DataOutputStream out) throws IOException {
080        out.writeByte(super.getOpcode());
081        out.writeShort(super.getIndex());
082    }
083
084    @Override
085    public Class<?>[] getExceptions() {
086        return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, ExceptionConst.UNSATISFIED_LINK_ERROR,
087            ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR);
088    }
089}