1 files changed, 78 insertions, 0 deletions
diff --git a/src/Ryujinx.Horizon/Sdk/Ngc/Detail/BitVector32.cs b/src/Ryujinx.Horizon/Sdk/Ngc/Detail/BitVector32.cs
new file mode 100644
index 00000000..f5456201
--- /dev/null
+++ b/src/Ryujinx.Horizon/Sdk/Ngc/Detail/BitVector32.cs
@@ -0,0 +1,78 @@
+namespace Ryujinx.Horizon.Sdk.Ngc.Detail
+{
+    class BitVector32
+    {
+        private const int BitsPerWord = Set.BitsPerWord;
+
+        private int _bitLength;
+        private uint[] _array;
+
+        public int BitLength => _bitLength;
+        public uint[] Array => _array;
+
+        public BitVector32()
+        {
+            _bitLength = 0;
+            _array = null;
+        }
+
+        public BitVector32(int length)
+        {
+            _bitLength = length;
+            _array = new uint[(length + BitsPerWord - 1) / BitsPerWord];
+        }
+
+        public bool Has(int index)
+        {
+            if ((uint)index < (uint)_bitLength)
+            {
+                int wordIndex = index / BitsPerWord;
+                int wordBitOffset = index % BitsPerWord;
+
+                return ((_array[wordIndex] >> wordBitOffset) & 1u) != 0;
+            }
+
+            return false;
+        }
+
+        public bool TurnOn(int index, int count)
+        {
+            for (int bit = 0; bit < count; bit++)
+            {
+                if (!TurnOn(index + bit))
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        public bool TurnOn(int index)
+        {
+            if ((uint)index < (uint)_bitLength)
+            {
+                int wordIndex = index / BitsPerWord;
+                int wordBitOffset = index % BitsPerWord;
+
+                _array[wordIndex] |= 1u << wordBitOffset;
+
+                return true;
+            }
+
+            return false;
+        }
+
+        public bool Import(ref BinaryReader reader)
+        {
+            if (!reader.Read(out _bitLength))
+            {
+                return false;
+            }
+
+            int arrayLength = (_bitLength + BitsPerWord - 1) / BitsPerWord;
+
+            return reader.AllocateAndReadArray(ref _array, arrayLength) == arrayLength;
+        }
+    }
+}