1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.generic; 23 24 import com.sun.org.apache.bcel.internal.Const; 25 import com.sun.org.apache.bcel.internal.ExceptionConst; 26 27 /** 28 * PUTFIELD - Put field in object 29 * <PRE>Stack: ..., objectref, value -> ...</PRE> 30 * OR 31 * <PRE>Stack: ..., objectref, value.word1, value.word2 -> ...</PRE> 32 * 33 */ 34 public class PUTFIELD extends FieldInstruction implements PopInstruction, ExceptionThrower { 35 36 /** 37 * Empty constructor needed for Instruction.readInstruction. 38 * Not to be used otherwise. 39 */ PUTFIELD()40 PUTFIELD() { 41 } 42 43 PUTFIELD(final int index)44 public PUTFIELD(final int index) { 45 super(Const.PUTFIELD, index); 46 } 47 48 49 @Override consumeStack( final ConstantPoolGen cpg )50 public int consumeStack( final ConstantPoolGen cpg ) { 51 return getFieldSize(cpg) + 1; 52 } 53 54 55 @Override getExceptions()56 public Class<?>[] getExceptions() { 57 return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, 58 ExceptionConst.NULL_POINTER_EXCEPTION, 59 ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR); 60 } 61 62 63 /** 64 * Call corresponding visitor method(s). The order is: 65 * Call visitor methods of implemented interfaces first, then 66 * call methods according to the class hierarchy in descending order, 67 * i.e., the most specific visitXXX() call comes last. 68 * 69 * @param v Visitor object 70 */ 71 @Override accept( final Visitor v )72 public void accept( final Visitor v ) { 73 v.visitExceptionThrower(this); 74 v.visitStackConsumer(this); 75 v.visitPopInstruction(this); 76 v.visitTypedInstruction(this); 77 v.visitLoadClass(this); 78 v.visitCPInstruction(this); 79 v.visitFieldOrMethod(this); 80 v.visitFieldInstruction(this); 81 v.visitPUTFIELD(this); 82 } 83 } 84