1/* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 */ 4/* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21package com.sun.org.apache.bcel.internal.generic; 22 23import java.io.DataOutputStream; 24import java.io.IOException; 25 26import com.sun.org.apache.bcel.internal.util.ByteSequence; 27 28/** 29 * SIPUSH - Push short 30 * 31 * <PRE>Stack: ... -> ..., value</PRE> 32 * 33 * @version $Id: SIPUSH.java 1747278 2016-06-07 17:28:43Z britter $ 34 */ 35public class SIPUSH extends Instruction implements ConstantPushInstruction { 36 37 private short b; 38 39 40 /** 41 * Empty constructor needed for the Class.newInstance() statement in 42 * Instruction.readInstruction(). Not to be used otherwise. 43 */ 44 SIPUSH() { 45 } 46 47 48 public SIPUSH(final short b) { 49 super(com.sun.org.apache.bcel.internal.Const.SIPUSH, (short) 3); 50 this.b = b; 51 } 52 53 54 /** 55 * Dump instruction as short code to stream out. 56 */ 57 @Override 58 public void dump( final DataOutputStream out ) throws IOException { 59 super.dump(out); 60 out.writeShort(b); 61 } 62 63 64 /** 65 * @return mnemonic for instruction 66 */ 67 @Override 68 public String toString( final boolean verbose ) { 69 return super.toString(verbose) + " " + b; 70 } 71 72 73 /** 74 * Read needed data (e.g. index) from file. 75 */ 76 @Override 77 protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException { 78 super.setLength(3); 79 b = bytes.readShort(); 80 } 81 82 83 @Override 84 public Number getValue() { 85 return Integer.valueOf(b); 86 } 87 88 89 /** @return Type.SHORT 90 */ 91 @Override 92 public Type getType( final ConstantPoolGen cp ) { 93 return Type.SHORT; 94 } 95 96 97 /** 98 * Call corresponding visitor method(s). The order is: 99 * Call visitor methods of implemented interfaces first, then 100 * call methods according to the class hierarchy in descending order, 101 * i.e., the most specific visitXXX() call comes last. 102 * 103 * @param v Visitor object 104 */ 105 @Override 106 public void accept( final Visitor v ) { 107 v.visitPushInstruction(this); 108 v.visitStackProducer(this); 109 v.visitTypedInstruction(this); 110 v.visitConstantPushInstruction(this); 111 v.visitSIPUSH(this); 112 } 113} 114