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 21 package com.sun.org.apache.bcel.internal.generic; 22 23 import java.io.DataOutputStream; 24 import java.io.IOException; 25 26 import com.sun.org.apache.bcel.internal.util.ByteSequence; 27 28 /** 29 * SIPUSH - Push short 30 * 31 * <PRE>Stack: ... -> ..., value</PRE> 32 * 33 */ 34 public class SIPUSH extends Instruction implements ConstantPushInstruction { 35 36 private short b; 37 38 39 /** 40 * Empty constructor needed for Instruction.readInstruction. 41 * Not to be used otherwise. 42 */ 43 SIPUSH() { 44 } 45 46 47 public SIPUSH(final short b) { 48 super(com.sun.org.apache.bcel.internal.Const.SIPUSH, (short) 3); 49 this.b = b; 50 } 51 52 53 /** 54 * Dump instruction as short code to stream out. 55 */ 56 @Override 57 public void dump( final DataOutputStream out ) throws IOException { 58 super.dump(out); 59 out.writeShort(b); 60 } 61 62 63 /** 64 * @return mnemonic for instruction 65 */ 66 @Override 67 public String toString( final boolean verbose ) { 68 return super.toString(verbose) + " " + b; 69 } 70 71 72 /** 73 * Read needed data (e.g. index) from file. 74 */ 75 @Override 76 protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException { 77 super.setLength(3); 78 b = bytes.readShort(); 79 } 80 81 82 @Override 83 public Number getValue() { 84 return Integer.valueOf(b); 85 } 86 87 88 /** @return Type.SHORT 89 */ 90 @Override 91 public Type getType( final ConstantPoolGen cp ) { 92 return Type.SHORT; 93 } 94 95 96 /** 97 * Call corresponding visitor method(s). The order is: 98 * Call visitor methods of implemented interfaces first, then 99 * call methods according to the class hierarchy in descending order, 100 * i.e., the most specific visitXXX() call comes last. 101 * 102 * @param v Visitor object 103 */ 104 @Override 105 public void accept( final Visitor v ) { 106 v.visitPushInstruction(this); 107 v.visitStackProducer(this); 108 v.visitTypedInstruction(this); 109 v.visitConstantPushInstruction(this); 110 v.visitSIPUSH(this); 111 } 112 }