/* | |
* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you under the Apache License, Version 2.0 (the | |
* "License"); you may not use this file except in compliance | |
* with the License. You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, | |
* software distributed under the License is distributed on an | |
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
* KIND, either express or implied. See the License for the | |
* specific language governing permissions and limitations | |
* under the License. | |
* | |
*/ | |
using System; | |
namespace Apache.Qpid.Buffer | |
{ | |
internal sealed class SlicedByteBuffer : ByteBuffer | |
{ | |
private ByteBuffer _buffer; | |
private int _capacity; | |
private int _startPos; | |
public override int Capacity | |
{ | |
get { return _capacity; } | |
} | |
public override byte[] Array | |
{ | |
get { return _buffer.Array; } | |
} | |
/// <summary> | |
/// Initialize a new instance | |
/// </summary> | |
/// <param name="buffer">Underlying byte buffer</param> | |
internal SlicedByteBuffer(ByteBuffer buffer) | |
{ | |
_buffer = buffer; | |
_startPos = buffer.Position; | |
Position = 0; | |
_capacity = buffer.Remaining; | |
Limit = Capacity; | |
// cannot autoexpand | |
IsAutoExpand = false; | |
} | |
protected override void DoWrite(int position, byte value) | |
{ | |
_buffer.Put(_startPos + position, value); | |
} | |
protected override void DoWrite(int position, byte[] src, int offset, int length) | |
{ | |
_buffer.Put(_startPos + position, src, offset, length); | |
} | |
protected override byte DoReadByte(int position) | |
{ | |
return _buffer.GetByte(_startPos + position); | |
} | |
protected override void DoReadBytes(int position, byte[] dest, int offset, int length) | |
{ | |
_buffer.GetBytes(_startPos + position, dest, offset, length); | |
} | |
protected override void DoCompact() | |
{ | |
throw new NotSupportedException(); | |
} | |
protected override void DoResize(int newSize) | |
{ | |
throw new NotSupportedException(); | |
} | |
} // class SlicedByteBuffer | |
} |