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