1 files changed, 56 insertions, 0 deletions
diff --git a/src/Ryujinx.Common/Memory/SpanReader.cs b/src/Ryujinx.Common/Memory/SpanReader.cs
new file mode 100644
index 00000000..673932d0
--- /dev/null
+++ b/src/Ryujinx.Common/Memory/SpanReader.cs
@@ -0,0 +1,56 @@
+using System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Common.Memory
+{
+    public ref struct SpanReader
+    {
+        private ReadOnlySpan<byte> _input;
+
+        public int Length => _input.Length;
+
+        public SpanReader(ReadOnlySpan<byte> input)
+        {
+            _input = input;
+        }
+
+        public T Read<T>() where T : unmanaged
+        {
+            T value = MemoryMarshal.Cast<byte, T>(_input)[0];
+
+            _input = _input.Slice(Unsafe.SizeOf<T>());
+
+            return value;
+        }
+
+        public ReadOnlySpan<byte> GetSpan(int size)
+        {
+            ReadOnlySpan<byte> data = _input.Slice(0, size);
+
+            _input = _input.Slice(size);
+
+            return data;
+        }
+
+        public ReadOnlySpan<byte> GetSpanSafe(int size)
+        {
+            return GetSpan((int)Math.Min((uint)_input.Length, (uint)size));
+        }
+
+        public T ReadAt<T>(int offset) where T : unmanaged
+        {
+            return MemoryMarshal.Cast<byte, T>(_input.Slice(offset))[0];
+        }
+
+        public ReadOnlySpan<byte> GetSpanAt(int offset, int size)
+        {
+            return _input.Slice(offset, size);
+        }
+
+        public void Skip(int size)
+        {
+            _input = _input.Slice(size);
+        }
+    }
+}
+\ No newline at end of file