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1   /*
2   * Copyright 2014 The Netty Project
3   *
4   * The Netty Project licenses this file to you under the Apache License,
5   * version 2.0 (the "License"); you may not use this file except in compliance
6   * with the License. You may obtain a copy of the License at:
7   *
8   *   http://www.apache.org/licenses/LICENSE-2.0
9   *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13  * License for the specific language governing permissions and limitations
14  * under the License.
15  */
16  
17  package io.netty.buffer;
18  
19  import io.netty.util.internal.PlatformDependent;
20  
21  /**
22   * Special {@link SwappedByteBuf} for {@link ByteBuf}s that use unsafe to access the byte array.
23   */
24  final class UnsafeHeapSwappedByteBuf extends AbstractUnsafeSwappedByteBuf {
25  
26      UnsafeHeapSwappedByteBuf(AbstractByteBuf buf) {
27          super(buf);
28      }
29  
30      private static int idx(ByteBuf wrapped, int index) {
31          return wrapped.arrayOffset() + index;
32      }
33  
34      @Override
35      protected long _getLong(AbstractByteBuf wrapped, int index) {
36          return PlatformDependent.getLong(wrapped.array(), idx(wrapped, index));
37      }
38  
39      @Override
40      protected int _getInt(AbstractByteBuf wrapped, int index) {
41          return PlatformDependent.getInt(wrapped.array(), idx(wrapped, index));
42      }
43  
44      @Override
45      protected short _getShort(AbstractByteBuf wrapped, int index) {
46          return PlatformDependent.getShort(wrapped.array(), idx(wrapped, index));
47      }
48  
49      @Override
50      protected void _setShort(AbstractByteBuf wrapped, int index, short value) {
51          PlatformDependent.putShort(wrapped.array(), idx(wrapped, index), value);
52      }
53  
54      @Override
55      protected void _setInt(AbstractByteBuf wrapped, int index, int value) {
56          PlatformDependent.putInt(wrapped.array(), idx(wrapped, index), value);
57      }
58  
59      @Override
60      protected void _setLong(AbstractByteBuf wrapped, int index, long value) {
61          PlatformDependent.putLong(wrapped.array(), idx(wrapped, index), value);
62      }
63  }