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: ... -> ..., 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 }