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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 java.io.IOException;
21  
22  import org.apache.bcel.util.ByteSequence;
23  
24  /**
25   * LDC_W - Push item from constant pool (wide index)
26   *
27   * <PRE>Stack: ... -&gt; ..., item.word1, item.word2</PRE>
28   *
29   * @version $Id: LDC_W.html 1021978 2017-12-09 17:38:21Z ggregory $
30   */
31  public class LDC_W extends LDC {
32  
33      /**
34       * Empty constructor needed for Instruction.readInstruction.
35       * Not to be used otherwise.
36       */
37      LDC_W() {
38      }
39  
40  
41      public LDC_W(final int index) {
42          super(index);
43      }
44  
45  
46      /**
47       * Read needed data (i.e., index) from file.
48       */
49      @Override
50      protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException {
51          setIndex(bytes.readUnsignedShort());
52          // Override just in case it has been changed
53          super.setOpcode(org.apache.bcel.Const.LDC_W);
54          super.setLength(3);
55      }
56  }