From 7f9c83f8939d60b83bc9ed8160f7442dc80b5194 Mon Sep 17 00:00:00 2001
From: Michael Yarichuk <michaely@bindecy.com>
Date: Sat, 2 May 2026 14:50:17 +0300
Subject: [PATCH] chore: add Clone method overload for read-only spans of
 characters

---
 src/SharpArena/Collections/ArenaUtf8String.cs | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/SharpArena/Collections/ArenaUtf8String.cs b/src/SharpArena/Collections/ArenaUtf8String.cs
index a35bb13..dd9ebc5 100644
--- a/src/SharpArena/Collections/ArenaUtf8String.cs
+++ b/src/SharpArena/Collections/ArenaUtf8String.cs
@@ -118,6 +118,34 @@ public static ArenaUtf8String Clone(string? src, ArenaAllocator arena)
         return new ArenaUtf8String(arena, dest, byteCount);
     }
     
+    /// <summary>
+    /// Clones the provided span into arena-managed memory.
+    /// </summary>
+    /// <param name="src">The source string to copy</param>
+    /// <param name="arena">Allocator providing unmanaged storage.</param>
+    /// <returns>An <see cref="ArenaUtf8String"/> referencing the cloned bytes.</returns>        
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static ArenaUtf8String Clone(ReadOnlySpan<char> src, ArenaAllocator arena)
+    {
+        if (src.IsEmpty)
+        {
+            return default;
+        }
+
+        var byteCount = Encoding.UTF8.GetByteCount(src);
+        if (byteCount == 0)
+        {
+            return default;
+        }
+
+        var dest = (byte*)arena.Alloc((uint)byteCount, align: 1);
+        Encoding.UTF8.GetBytes(
+            src,
+            new Span<byte>(dest, byteCount));
+
+        return new ArenaUtf8String(arena, dest, byteCount);
+    }    
+    
     /// <summary>
     /// Clones the provided span into arena-managed memory.
     /// </summary>