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ryujinx-final/Ryujinx.Common/Memory/SpanWriter.cs

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using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Common.Memory
{
public ref struct SpanWriter
{
private Span<byte> _output;
public int Length => _output.Length;
public SpanWriter(Span<byte> output)
{
_output = output;
}
public void Write<T>(T value) where T : unmanaged
{
MemoryMarshal.Cast<byte, T>(_output)[0] = value;
_output = _output.Slice(Unsafe.SizeOf<T>());
}
public void Write(ReadOnlySpan<byte> data)
{
data.CopyTo(_output.Slice(0, data.Length));
_output = _output.Slice(data.Length);
}
public void WriteAt<T>(int offset, T value) where T : unmanaged
{
MemoryMarshal.Cast<byte, T>(_output.Slice(offset))[0] = value;
}
public void WriteAt(int offset, ReadOnlySpan<byte> data)
{
data.CopyTo(_output.Slice(offset, data.Length));
}
public void Skip(int size)
{
_output = _output.Slice(size);
}
}
}