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.commons.compress.harmony.unpack200.bytecode.forms;
18
19 import org.apache.commons.compress.harmony.pack200.Pack200Exception;
20 import org.apache.commons.compress.harmony.unpack200.bytecode.ByteCode;
21 import org.apache.commons.compress.harmony.unpack200.bytecode.OperandManager;
22
23 /**
24 * This class is used for representations of cldc and cldc_w. In these cases, a narrow class ref has one byte and a wide class ref has two bytes.
25 */
26 public class NarrowClassRefForm extends ClassRefForm {
27
28 public NarrowClassRefForm(final int opcode, final String name, final int[] rewrite) {
29 super(opcode, name, rewrite);
30 }
31
32 public NarrowClassRefForm(final int opcode, final String name, final int[] rewrite, final boolean widened) {
33 super(opcode, name, rewrite, widened);
34 }
35
36 @Override
37 public boolean nestedMustStartClassPool() {
38 return !widened;
39 }
40
41 @Override
42 protected void setNestedEntries(final ByteCode byteCode, final OperandManager operandManager, final int offset) throws Pack200Exception {
43 super.setNestedEntries(byteCode, operandManager, offset);
44 if (!widened) {
45 byteCode.setNestedPositions(new int[][] { { 0, 1 } });
46 }
47 }
48 }