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;
+			readonly StringBuffer _buf = new StringBuffer();
-			public ScoreStringSrc(ArrayPool<byte> pool, Func<string> cb)
+			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) {
-				if (_buf != null) {
+					_pool.Return(buf);
-					_pool.Return(_buf);
+					base.Invalidate();
-					_buf = null;
 				}
 			}
 			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;
+					char* ptr = (char*)(_ptr + sizeof(int));
-					foreach (var c in src) ptr[i++] = c;
+					_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": [],

Assets/Plugins/StringFormatter.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 0c0e7d20046652343bdbe3ed52cb0340
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Plugins/StringFormatter/CustomNumeric.cs

@@ -0,0 +1,333 @@
+// Copyright (c) 2023 Cryville
+//
+// This file contains an implementation of the stub for custom format string
+// originally written by Michael Popoloski. Below is the original license.
+//
+// Copyright (c) 2015-2017 Michael Popoloski
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+namespace System.Text.Formatting {
+	// this file contains the custom numeric formatting routines split out from the Numeric.cs file
+	unsafe partial class Numeric {
+		static void NumberToCustomFormatString(StringBuffer formatter, ref Number number, StringView specifier, CachedCulture culture) {
+			// Special: Handle special values
+			switch (number.Scale) {
+				case ScaleInf: formatter.Append(number.Sign == 0 ? culture.PositiveInfinity : culture.NegativeInfinity); return;
+				case ScaleNaN: formatter.Append(culture.NaN); return;
+			}
+			// Iteration 1: Split by semicolon
+			int specifierPositiveEnd = IndexOfSectionSeparator(specifier);
+			int specifierNegativeStart = 0, specifierNegativeEnd, specifierZeroStart = 0;
+			if (specifierPositiveEnd == -1) {
+				specifierPositiveEnd = specifierNegativeEnd = specifier.Length;
+			}
+			else {
+				specifierNegativeStart = specifierPositiveEnd + 1;
+				specifierNegativeEnd = IndexOfSectionSeparator(specifier, specifierNegativeStart);
+				if (specifierNegativeEnd == -1) {
+					specifierNegativeEnd = specifier.Length;
+				}
+				else {
+					specifierZeroStart = specifierNegativeEnd + 1;
+				}
+			}
+			// Special: Handle zero
+			if (IsZero(ref number)) {
+				FormatCustomFormatString(formatter, ref number, null, specifier, specifierZeroStart, specifier.Length, culture);
+				return;
+			}
+			// Iteration 2: Divide and round number
+			int originalScale = number.Scale;
+			if (number.Sign == 0) ApplyDivisionAndPrecision(ref number, specifier, 0, specifierPositiveEnd);
+			else ApplyDivisionAndPrecision(ref number, specifier, specifierNegativeStart, specifierNegativeEnd);
+			// Iteration 3: Count; Iteration 4: Format
+			if (IsZero(ref number)) FormatCustomFormatString(formatter, ref number, null, specifier, specifierZeroStart, specifier.Length, culture);
+			else if (number.Sign == 0) FormatCustomFormatString(formatter, ref number, originalScale, specifier, 0, specifierPositiveEnd, culture);
+			else {
+				if (specifierNegativeStart == 0) formatter.Append(culture.NegativeSign);
+				FormatCustomFormatString(formatter, ref number, originalScale, specifier, specifierNegativeStart, specifierNegativeEnd, culture);
+			}
+		}
+		static int IndexOfSectionSeparator(StringView specifier) {
+			return IndexOfSectionSeparator(specifier, 0);
+		}
+		static int IndexOfSectionSeparator(StringView specifier, int index) {
+			if (index < 0 || index > specifier.Length) throw new ArgumentOutOfRangeException("index");
+			char* ptr = specifier.Data;
+			for (; index < specifier.Length; index++) {
+				switch (ptr[index]) {
+					case ';': return index;
+					case '\\':
+						index++;
+						if (index >= specifier.Length) throw new FormatException();
+						break;
+					case '\'':
+						SkipLiteral(specifier, ref index, '\'');
+						break;
+					case '"':
+						SkipLiteral(specifier, ref index, '"');
+						break;
+				}
+			}
+			return -1;
+		}
+		static bool IsZero(ref Number number) {
+			char* ptr = number.Digits;
+			while (*ptr != '\0') if (*ptr++ != '0') return false;
+			return true;
+		}
+		static void ApplyDivisionAndPrecision(ref Number number, StringView specifier, int index, int end) {
+			int deltaScale = 0, scalingSpecifiers = 0;
+			int integralDigits = 0, decimalDigits = 0;
+			bool decimalFlag = false, exponentialFlag = false;
+			char* ptr = specifier.Data;
+			for (; index < end; index++) {
+				switch (ptr[index]) {
+					case '\\':
+						if (++index >= end) throw new FormatException();
+						break;
+					case '\'':
+						SkipLiteral(specifier, ref index, '\'');
+						break;
+					case '"':
+						SkipLiteral(specifier, ref index, '"');
+						break;
+					case '0':
+					case '#':
+						if (decimalFlag) decimalDigits++;
+						else integralDigits++;
+						scalingSpecifiers = 0;
+						break;
+					case '.': decimalFlag = true; deltaScale -= scalingSpecifiers * 3; break;
+					case ',': scalingSpecifiers++; break;
+					case '%': deltaScale += 2; break;
+					case '‰': deltaScale += 3; break;
+					case 'E':
+					case 'e':
+						if (++index >= end) goto exit;
+						char tc0 = ptr[index];
+						if (tc0 == '+' || tc0 == '-') {
+							if (++index >= end) goto exit;
+						}
+						if (ptr[index] != '0') break;
+						exponentialFlag = true;
+						for (index++; index < end && ptr[index] == '0'; index++) ;
+						index--;
+						break;
+				}
+			}
+		exit:
+			if (exponentialFlag) {
+				number.Scale = integralDigits;
+				RoundNumber(ref number, integralDigits + decimalDigits);
+			}
+			else {
+				number.Scale += deltaScale;
+				RoundNumber(ref number, number.Scale + decimalDigits);
+			}
+		}
+		static void FormatCustomFormatString(StringBuffer formatter, ref Number number, int? originalScale, StringView specifier, int index, int end, CachedCulture culture) {
+			int start = index;
+			int integralDigits = 0, integralZeros = 0,
+				decimalDigits  = 0, decimalZeros  = 0;
+			bool integralHasZeroFlag = false;
+			int exponentialZeros = 0;
+			bool decimalFlag = false;
+			bool commaFlag = false, groupFlag = false;
+			char* ptr = specifier.Data;
+			for (; index < end; index++) {
+				switch (ptr[index]) {
+					case '\\':
+						if (++index >= end) throw new FormatException();
+						break;
+					case '\'':
+						SkipLiteral(specifier, ref index, '\'');
+						break;
+					case '"':
+						SkipLiteral(specifier, ref index, '"');
+						break;
+					case '0':
+						if (decimalFlag) {
+							if (decimalZeros < decimalDigits)
+								decimalZeros = decimalDigits;
+							decimalDigits++;
+							decimalZeros++;
+						}
+						else {
+							integralDigits++;
+							integralZeros++;
+							integralHasZeroFlag = true;
+							if (commaFlag) groupFlag = true;
+						}
+						break;
+					case '#':
+						if (decimalFlag) {
+							decimalDigits++;
+						}
+						else {
+							integralDigits++;
+							if (integralHasZeroFlag) integralZeros++;
+							if (commaFlag) groupFlag = true;
+						}
+						break;
+					case '.': decimalFlag = true; commaFlag = false; break;
+					case ',': commaFlag = true; break;
+					case 'E':
+					case 'e':
+						if (++index >= end) goto exit;
+						char tc0 = ptr[index];
+						if (tc0 == '+' || tc0 == '-') {
+							if (++index >= end) goto exit;
+						}
+						if (ptr[index] != '0') break;
+						for (; index < end && ptr[index] == '0'; index++) exponentialZeros++;
+						index--;
+						break;
+				}
+			}
+		exit:
+			int currentDigitIndex = 0;
+			int groupIndex = 0, remainingDigitsInGroup = Math.Max(number.Scale, decimalZeros);
+			if (groupFlag) while (true) {
+				int groupSize = culture.NumberData.GroupSizes.ElementAtOrLast(groupIndex);
+				if (remainingDigitsInGroup <= groupSize) break;
+				remainingDigitsInGroup -= groupSize;
+				groupIndex++;
+			}
+			if (number.Scale > integralDigits) while (currentDigitIndex < number.Scale - integralDigits)
+				formatter.AppendIntegralDigit(ref number, ref currentDigitIndex, culture, groupFlag, ref groupIndex, ref remainingDigitsInGroup);
+			decimalFlag = false;
+			for (index = start; index < end; index++) {
+				switch (ptr[index]) {
+					case '\\':
+						if (++index >= end) throw new FormatException();
+						formatter.Append(ptr[index]);
+						break;
+					case '\'':
+						formatter.AppendLiteral(specifier, ref index, '\'');
+						break;
+					case '"':
+						formatter.AppendLiteral(specifier, ref index, '"');
+						break;
+					case '0':
+					case '#':
+						if (decimalFlag) {
+							if (currentDigitIndex < number.Precision) {
+								char digit = number.Digits[currentDigitIndex++];
+								if (digit == '\0') digit = '0';
+								formatter.Append(digit);
+							}
+							else if (decimalZeros > 0)
+								formatter.Append('0');
+							--decimalDigits;
+							--decimalZeros;
+						}
+						else {
+							if (integralDigits <= number.Scale)
+								formatter.AppendIntegralDigit(ref number, ref currentDigitIndex, culture, groupFlag, ref groupIndex, ref remainingDigitsInGroup);
+							else if (integralDigits <= integralZeros)
+								formatter.AppendIntegralDigit('0', culture, groupFlag, ref groupIndex, ref remainingDigitsInGroup);
+							--integralDigits;
+						}
+						break;
+					case '.': formatter.Append(culture.NumberData.DecimalSeparator); decimalFlag = true; break;
+					case ',': break;
+					case '%': formatter.Append(culture.PercentSymbol); break;
+					case '‰': formatter.Append(culture.PerMilleSymbol); break;
+					case 'E':
+					case 'e':
+						char exponentialSymbol = ptr[index];
+						if (++index >= end) {
+							index--;
+							goto default;
+						}
+						char tc0 = ptr[index];
+						bool hasPlusFlag = false;
+						if (tc0 == '+' || tc0 == '-') {
+							if (++index >= end) {
+								index -= 2;
+								goto default;
+							}
+							if (tc0 == '+') hasPlusFlag = true;
+						}
+						if (ptr[index] != '0') {
+							index -= 2;
+							goto default;
+						}
+						for (index++; index < end && ptr[index] == '0'; index++) ;
+						index--;
+
+						int exp = originalScale == null ? 0 : originalScale.Value - number.Scale;
+						formatter.Append(exponentialSymbol);
+						if (exp < 0) {
+							formatter.Append(culture.NegativeSign);
+							exp = -exp;
+						}
+						else if (hasPlusFlag) {
+							formatter.Append(culture.PositiveSign);
+						}
+						Int32ToDecStr(formatter, exp, exponentialZeros, "");
+						break;
+					default:
+						formatter.Append(ptr[index]);
+						break;
+				}
+			}
+		}
+		static void AppendIntegralDigit(this StringBuffer self, ref Number number, ref int index, CachedCulture culture, bool groupFlag, ref int groupIndex, ref int remainingDigitsInGroup) {
+			char digit;
+			if (index >= number.Precision) digit = '0';
+			else digit = number.Digits[index];
+			if (digit == '\0') digit = '0';
+			self.AppendIntegralDigit(digit, culture, groupFlag, ref groupIndex, ref remainingDigitsInGroup);
+			index++;
+		}
+		static void AppendIntegralDigit(this StringBuffer self, char digit, CachedCulture culture, bool groupFlag, ref int groupIndex, ref int remainingDigitsInGroup) {
+			self.Append(digit);
+			if (!groupFlag) return;
+			if (--remainingDigitsInGroup == 0) {
+				if (--groupIndex >= 0) {
+					remainingDigitsInGroup = culture.NumberData.GroupSizes.ElementAtOrLast(groupIndex);
+					self.Append(culture.NumberData.GroupSeparator);
+				}
+			}
+		}
+		static T ElementAtOrLast<T>(this T[] arr, int index) {
+			if (index >= arr.Length) index = arr.Length - 1;
+			return arr[index];
+		}
+		static void SkipLiteral(StringView specifier, ref int index, char delimiter) {
+			while (++index < specifier.Length) {
+				if (specifier.Data[index] == delimiter) return;
+			}
+			throw new FormatException();
+		}
+		static void AppendLiteral(this StringBuffer self, StringView specifier, ref int index, char delimiter) {
+			int start = index + 1;
+			while (++index < specifier.Length) {
+				if (specifier.Data[index] == delimiter) {
+					self.Append(specifier.Data + start, index - start);
+					return;
+				}
+			}
+			throw new FormatException();
+		}
+	}
+}

Assets/Plugins/StringFormatter/CustomNumeric.cs.meta

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Assets/Plugins/StringFormatter/StringFormatter.asmdef

@@ -0,0 +1,14 @@
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Assets/Plugins/StringFormatter/StringFormatter.asmdef.meta

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Assets/Plugins/StringFormatter/StringFormatter.cs.meta

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