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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   https://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.bcel.generic;
20  
21  import java.io.IOException;
22  
23  import org.apache.bcel.util.ByteSequence;
24  
25  /**
26   * LDC_W - Push item from constant pool (wide index)
27   *
28   * <PRE>
29   * Stack: ... -&gt; ..., item.word1, item.word2
30   * </PRE>
31   */
32  public class LDC_W extends LDC {
33  
34      /**
35       * Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.
36       */
37      LDC_W() {
38      }
39  
40      public LDC_W(final int index) {
41          super(index);
42      }
43  
44      /**
45       * Reads needed data (i.e., index) from file.
46       */
47      @Override
48      protected void initFromFile(final ByteSequence bytes, final boolean wide) throws IOException {
49          setIndex(bytes.readUnsignedShort());
50          // Override just in case it has been changed
51          super.setOpcode(org.apache.bcel.Const.LDC_W);
52          super.setLength(3);
53      }
54  }