1 files changed, 49 insertions, 0 deletions
diff --git a/src/Ryujinx.Horizon/Sdk/Ngc/Detail/MatchState.cs b/src/Ryujinx.Horizon/Sdk/Ngc/Detail/MatchState.cs
new file mode 100644
index 00000000..04fc1850
--- /dev/null
+++ b/src/Ryujinx.Horizon/Sdk/Ngc/Detail/MatchState.cs
@@ -0,0 +1,49 @@
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Ngc.Detail
+{
+    readonly ref struct MatchState
+    {
+        public readonly Span<byte> OriginalText;
+        public readonly Span<byte> ConvertedText;
+        public readonly ReadOnlySpan<sbyte> DeltaTable;
+        public readonly ref int MaskedCount;
+        public readonly MaskMode MaskMode;
+        public readonly Sbv NoSeparatorMap;
+        public readonly AhoCorasick DelimitedWordsTrie;
+
+        public MatchState(
+            Span<byte> originalText,
+            Span<byte> convertedText,
+            ReadOnlySpan<sbyte> deltaTable,
+            ref int maskedCount,
+            MaskMode maskMode,
+            Sbv noSeparatorMap = null,
+            AhoCorasick delimitedWordsTrie = null)
+        {
+            OriginalText = originalText;
+            ConvertedText = convertedText;
+            DeltaTable = deltaTable;
+            MaskedCount = ref maskedCount;
+            MaskMode = maskMode;
+            NoSeparatorMap = noSeparatorMap;
+            DelimitedWordsTrie = delimitedWordsTrie;
+        }
+
+        public readonly (int, int) GetOriginalRange(int convertedStartOffest, int convertedEndOffset)
+        {
+            int originalStartOffset = 0;
+            int originalEndOffset = 0;
+
+            for (int index = 0; index < convertedEndOffset; index++)
+            {
+                int byteLength = Math.Abs(DeltaTable[index]);
+
+                originalStartOffset += index < convertedStartOffest ? byteLength : 0;
+                originalEndOffset += byteLength;
+            }
+
+            return (originalStartOffset, originalEndOffset);
+        }
+    }
+}