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  * GETSTATIC - Fetch static field from class
  29  * <PRE>Stack: ..., -&gt; ..., value</PRE>
  30  * OR
  31  * <PRE>Stack: ..., -&gt; ..., value.word1, value.word2</PRE>
  32  *
  33  * @version $Id: GETSTATIC.java 1747278 2016-06-07 17:28:43Z britter $
  34  */
  35 public class GETSTATIC extends FieldInstruction implements PushInstruction, ExceptionThrower {
  36 
  37     /**
  38      * Empty constructor needed for the Class.newInstance() statement in
  39      * Instruction.readInstruction(). Not to be used otherwise.
  40      */
  41     GETSTATIC() {
  42     }
  43 
  44 
  45     public GETSTATIC(final int index) {
  46         super(Const.GETSTATIC, index);
  47     }
  48 
  49 
  50     @Override
  51     public int produceStack( final ConstantPoolGen cpg ) {
  52         return getFieldSize(cpg);
  53     }
  54 
  55 
  56     @Override
  57     public Class<?>[] getExceptions() {
  58         return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_FIELD_AND_METHOD_RESOLUTION,
  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
  72     public void accept( final Visitor v ) {
  73         v.visitStackProducer(this);
  74         v.visitPushInstruction(this);
  75         v.visitExceptionThrower(this);
  76         v.visitTypedInstruction(this);
  77         v.visitLoadClass(this);
  78         v.visitCPInstruction(this);
  79         v.visitFieldOrMethod(this);
  80         v.visitFieldInstruction(this);
  81         v.visitGETSTATIC(this);
  82     }
  83 }