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 org.apache.bcel.Const; 21 import org.apache.bcel.ExceptionConst; 22 23 /** 24 * PUTFIELD - Put field in object 25 * <PRE>Stack: ..., objectref, value -> ...</PRE> 26 * OR 27 * <PRE>Stack: ..., objectref, value.word1, value.word2 -> ...</PRE> 28 * 29 * @version $Id$ 30 */ 31 public class PUTFIELD extends FieldInstruction implements PopInstruction, ExceptionThrower { 32 33 /** 34 * Empty constructor needed for Instruction.readInstruction. 35 * Not to be used otherwise. 36 */ 37 PUTFIELD() { 38 } 39 40 41 public PUTFIELD(final int index) { 42 super(Const.PUTFIELD, index); 43 } 44 45 46 @Override 47 public int consumeStack( final ConstantPoolGen cpg ) { 48 return getFieldSize(cpg) + 1; 49 } 50 51 52 @Override 53 public Class<?>[] getExceptions() { 54 return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION, 55 ExceptionConst.NULL_POINTER_EXCEPTION, 56 ExceptionConst.INCOMPATIBLE_CLASS_CHANGE_ERROR); 57 } 58 59 60 /** 61 * Call corresponding visitor method(s). The order is: 62 * Call visitor methods of implemented interfaces first, then 63 * call methods according to the class hierarchy in descending order, 64 * i.e., the most specific visitXXX() call comes last. 65 * 66 * @param v Visitor object 67 */ 68 @Override 69 public void accept( final Visitor v ) { 70 v.visitExceptionThrower(this); 71 v.visitStackConsumer(this); 72 v.visitPopInstruction(this); 73 v.visitTypedInstruction(this); 74 v.visitLoadClass(this); 75 v.visitCPInstruction(this); 76 v.visitFieldOrMethod(this); 77 v.visitFieldInstruction(this); 78 v.visitPUTFIELD(this); 79 } 80 } 81
