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Copy pathByteWriter.cs
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145 lines (117 loc) · 3.24 KB
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Copy pathByteWriter.cs
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145 lines (117 loc) · 3.24 KB
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using System.Buffers.Binary;
using System.Runtime.CompilerServices;
namespace NetCode;
public sealed class ByteWriter : IByteWriter
{
private const int DefaultCapacity = 1500;
private byte[] _data;
private int _capacity;
private int _count;
private int _start;
public ByteWriter(int capacity = DefaultCapacity):this(new byte[capacity])
{
}
public ByteWriter(byte[] data)
{
_data = data;
_capacity = _data.Length;
_start = _count = 0;
}
public int Start => _start;
public int Capacity => _capacity;
public int Count => _count;
public byte[] Array => _data;
public void SetArray(byte[] data) => SetArray(data, 0);
public void SetArray(byte[] data, int offset)
{
if (offset > data.Length)
{
ThrowHelper.ThrowArgumentOutOfRangeException();
}
_data = data;
_capacity = _data.Length;
_start = _count = offset;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Clear()
{
_count = _start;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(byte value)
{
var size = 1;
if (size + Count > _capacity)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
_data[Count] = value;
_count += size;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(short value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(ushort value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(int value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(uint value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(long value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(ulong value)
{
if (!BitConverter.IsLittleEndian)
{
value = BinaryPrimitives.ReverseEndianness(value);
}
WriteInternal(value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void WriteInternal<T>(T value)
where T : unmanaged
{
var size = Unsafe.SizeOf<T>();
if (size + _count > _capacity)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
Unsafe.WriteUnaligned(ref _data[_count], value);
_count += size;
}
}