Introduce no GC string formatter to optimize score string formatting.

Assets/Cryville/Crtr/Judge.cs

@@ -4,6 +4,7 @@ using Cryville.Common.Pdt;
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.Text.Formatting;
 
 namespace Cryville.Crtr {
 	public class Judge {
@@ -217,7 +218,7 @@ namespace Cryville.Crtr {
 				scoreDefs.Add(key, s.Value);
 				scores.Add(key, s.Value.init);
 				scoreStringCache.Add(scoreStringKeys[key], null);
-				scoreStringSrcs.Add(scoreStringKeys[key], new ScoreStringSrc(scoreStringPool, () => GetScoreString(strkey)));
+				scoreStringSrcs.Add(scoreStringKeys[key], new ScoreStringSrc(scoreStringPool, () => scores[key], scoreDefs[key].format));
 			}
 		}
 		void InvalidateScore(int key) {
@@ -249,30 +250,32 @@ namespace Cryville.Crtr {
 			return result;
 		}
 		class ScoreStringSrc : PropSrc {
-			readonly Func<string> _cb;
+			readonly Func<float> _cb;
+			readonly string _format;
 			readonly ArrayPool<byte> _pool;
-			byte[] _buf;
-			public ScoreStringSrc(ArrayPool<byte> pool, Func<string> cb)
+			readonly StringBuffer _buf = new StringBuffer();
+			public ScoreStringSrc(ArrayPool<byte> pool, Func<float> cb, string format)
 				: base(PdtInternalType.String) {
 				_pool = pool;
 				_cb = cb;
+				_format = string.Format("{{0:{0}}}", format);
 			}
 			public override void Invalidate() {
-				base.Invalidate();
-				if (_buf != null) {
-					_pool.Return(_buf);
-					_buf = null;
+				if (buf != null) {
+					_pool.Return(buf);
+					base.Invalidate();
 				}
 			}
 			protected override unsafe void InternalGet() {
 				var src = _cb();
-				int strlen = src.Length;
+				_buf.Clear();
+				_buf.AppendFormat(_format, src);
+				int strlen = _buf.Count;
 				buf = _pool.Rent(sizeof(int) + strlen * sizeof(char));
 				fixed (byte* _ptr = buf) {
-					char* ptr = (char*)(_ptr + sizeof(int));
 					*(int*)_ptr = strlen;
-					int i = 0;
-					foreach (var c in src) ptr[i++] = c;
+					char* ptr = (char*)(_ptr + sizeof(int));
+					_buf.CopyTo(ptr, 0, strlen);
 				}
 			}
 		}

Assets/Cryville/Cryville.Crtr.asmdef

@@ -3,7 +3,8 @@
     "rootNamespace": "",
     "references": [
         "GUID:d8ea0e0da3ad53a45b65c912ffcacab0",
-        "GUID:5686e5ee69d0e084c843d61c240d7fdb"
+        "GUID:5686e5ee69d0e084c843d61c240d7fdb",
+        "GUID:2922aa74af3b2854e81b8a8b286d8206"
     ],
     "includePlatforms": [],
     "excludePlatforms": [],