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 25 import com.sun.org.apache.bcel.internal.Constants; 26 import com.sun.org.apache.bcel.internal.ExceptionConstants; 27 28 /** 29 * PUTFIELD - Put field in object 30 * <PRE>Stack: ..., objectref, value -> ...</PRE> 31 * OR 32 * <PRE>Stack: ..., objectref, value.word1, value.word2 -> ...</PRE> 33 * 34 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 35 */ 36 public class PUTFIELD 37 extends FieldInstruction 38 implements PopInstruction,ExceptionThrower{ 39 /** 40 * Empty constructor needed for the Class.newInstance() statement in 41 * Instruction.readInstruction(). Not to be used otherwise. 42 */ 43 PUTFIELD() {} 44 45 public PUTFIELD(int index) { 46 super(Constants.PUTFIELD, index); 47 } 48 49 public int consumeStack(ConstantPoolGen cpg) { return getFieldSize(cpg) + 1; } 50 51 public Class[] getExceptions() { 52 Class[] cs = new Class[2 + ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length]; 53 54 System.arraycopy(ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION, 0, 55 cs, 0, ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length); 56 57 cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length+1] = 58 ExceptionConstants.INCOMPATIBLE_CLASS_CHANGE_ERROR; 59 cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length] = 60 ExceptionConstants.NULL_POINTER_EXCEPTION; 61 62 return cs; 63 } 64 65 66 /** 67 * Call corresponding visitor method(s). The order is: 68 * Call visitor methods of implemented interfaces first, then 69 * call methods according to the class hierarchy in descending order, 70 * i.e., the most specific visitXXX() call comes last. 71 * 72 * @param v Visitor object 73 */ 74 public void accept(Visitor v) { 75 v.visitExceptionThrower(this); 76 v.visitStackConsumer(this); 77 v.visitPopInstruction(this); 78 v.visitTypedInstruction(this); 79 v.visitLoadClass(this); 80 v.visitCPInstruction(this); 81 v.visitFieldOrMethod(this); 82 v.visitFieldInstruction(this); 83 v.visitPUTFIELD(this); 84 } 85 }