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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  package org.apache.bcel.generic;
18  
19  import java.io.IOException;
20  
21  import org.apache.bcel.util.ByteSequence;
22  
23  /**
24   * LDC_W - Push item from constant pool (wide index)
25   *
26   * <PRE>
27   * Stack: ... -&gt; ..., item.word1, item.word2
28   * </PRE>
29   */
30  public class LDC_W extends LDC {
31  
32      /**
33       * Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.
34       */
35      LDC_W() {
36      }
37  
38      public LDC_W(final int index) {
39          super(index);
40      }
41  
42      /**
43       * Read needed data (i.e., index) from file.
44       */
45      @Override
46      protected void initFromFile(final ByteSequence bytes, final boolean wide) throws IOException {
47          setIndex(bytes.readUnsignedShort());
48          // Override just in case it has been changed
49          super.setOpcode(org.apache.bcel.Const.LDC_W);
50          super.setLength(3);
51      }
52  }