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add benchmark
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‎ToonEncoder.slnx‎

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<Solution>
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<Folder Name="/sandbox/">
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<Project Path="sandbox/BenchmarkSuite/BenchmarkSuite.csproj" Id="a601f4ad-3dfd-43cc-b51b-845076f73eef" />
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<Project Path="sandbox/ConsoleApp1/ConsoleApp1.csproj" />
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</Folder>
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<Folder Name="/src/">

‎sandbox/BenchmarkSuite/BenchmarkSuite.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net10.0</TargetFramework>
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<LangVersion>14</LangVersion>
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<OutputType>Exe</OutputType>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
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<NoWarn>1701;1702;CS0436</NoWarn>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
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<NoWarn>1701;1702;CS0436</NoWarn>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="BenchmarkDotNet" Version="0.15.2" />
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<PackageReference Include="Microsoft.VisualStudio.DiagnosticsHub.BenchmarkDotNetDiagnosers" Version="18.0.36313.1" />
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<PackageReference Include="Toon" Version="0.0.1-preview-01" />
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<PackageReference Include="ToonSharp" Version="1.0.0" />
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<PackageReference Include="ToonNet" Version="1.0.4" />
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<PackageReference Include="Toon.DotNet" Version="1.5.1" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\..\src\ToonEncoder\ToonEncoder.csproj" />
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</ItemGroup>
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</Project>

‎sandbox/BenchmarkSuite/EncodeBenchmark.cs‎

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using BenchmarkDotNet.Attributes;
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using BenchmarkDotNet.Order;
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using System.Linq;
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namespace BenchmarkSuite
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{
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public record Person(int Id, string Name, int Age);
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[Orderer(SummaryOrderPolicy.FastestToSlowest)]
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public class EncodeBenchmark
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{
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Person[] data;
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public EncodeBenchmark()
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{
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data = Enumerable.Range(0, 100)
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.Select(x => new Person(x, $"Person {x}", x * 2))
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.ToArray();
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}
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// mine
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[Benchmark]
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public string ToonEncoder_Encode()
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{
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return global::Cysharp.AI.ToonEncoder.Encode(data);
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}
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[Benchmark]
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public string ToonEncoder_EncodeAsTabularArray()
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{
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return global::Cysharp.AI.ToonEncoder.EncodeAsTabularArray(data);
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}
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// https://github.com/StefH/Toon.NET
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[Benchmark]
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public string Toon_Encode()
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{
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return global::Toon.ToonEncoder.Encode(data);
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}
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// https://github.com/0xZunia/ToonSharp
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[Benchmark]
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public string ToonSharp_Serialize()
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{
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return global::ToonSharp.ToonSerializer.Serialize(data);
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}
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// https://github.com/Nicola898989/ToonNet
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[Benchmark]
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public string ToonNet_Encode()
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{
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return global::ToonNetSerializer.ToonNet.Encode(data);
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}
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// https://github.com/CharlesHunt/ToonDotNet
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[Benchmark]
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public string ToonDotNet_Encode()
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{
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return global::ToonFormat.Toon.Encode(data);
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}
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// Official impl: https://github.com/toon-format/toon-dotnet
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[Benchmark]
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public string ToonFormat_Encode()
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{
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return global::Toon.Format.ToonEncoder.Encode(data);
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}
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}
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}

‎sandbox/BenchmarkSuite/Program.cs‎

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using BenchmarkDotNet.Configs;
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using BenchmarkDotNet.Diagnosers;
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using BenchmarkDotNet.Jobs;
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using BenchmarkDotNet.Reports;
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using BenchmarkDotNet.Running;
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using BenchmarkDotNet.Toolchains.CsProj;
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using Perfolizer.Horology;
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var config = DefaultConfig.Instance
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.WithSummaryStyle(SummaryStyle.Default)
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// .WithTimeUnit(TimeUnit.Millisecond))
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.HideColumns(BenchmarkDotNet.Columns.Column.Error)
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;
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config.AddDiagnoser(MemoryDiagnoser.Default);
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config.AddJob(Job.ShortRun
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.WithToolchain(CsProjCoreToolchain.NetCoreApp10_0) // .NET 10
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.DontEnforcePowerPlan());
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var _ = BenchmarkRunner.Run(typeof(Program).Assembly, config);

‎sandbox/BenchmarkSuite/ToonFormat/Constants.cs‎

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using System;
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namespace ToonFormat
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{
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public static class Constants
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{
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public const char LIST_ITEM_MARKER = '-';
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public const string LIST_ITEM_PREFIX = "- ";
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// #region Structural characters
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public const char COMMA = ',';
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public const char COLON = ':';
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public const char SPACE = ' ';
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public const char PIPE = '|';
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public const char HASH = '#';
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public const char DOT = '.';
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// #endregion
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// #region Brackets and braces
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public const char OPEN_BRACKET = '[';
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public const char CLOSE_BRACKET = ']';
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public const char OPEN_BRACE = '{';
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public const char CLOSE_BRACE = '}';
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// #endregion
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// #region Literals
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public const string NULL_LITERAL = "null";
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public const string TRUE_LITERAL = "true";
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public const string FALSE_LITERAL = "false";
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// #endregion
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// #region Escape/control characters
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public const char BACKSLASH = '\\';
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public const char DOUBLE_QUOTE = '"';
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public const char NEWLINE = '\n';
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public const char CARRIAGE_RETURN = '\r';
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public const char TAB = '\t';
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// #region Delimiter defaults and mapping
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public const ToonDelimiter DEFAULT_DELIMITER_ENUM = ToonDelimiter.COMMA;
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/// <summary>Default delimiter character (comma).</summary>
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public const char DEFAULT_DELIMITER_CHAR = COMMA;
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/// <summary>Maps delimiter enum values to their specific characters.</summary>
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public static char ToDelimiterChar(ToonDelimiter delimiter) => delimiter switch
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{
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ToonDelimiter.COMMA => COMMA,
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ToonDelimiter.TAB => TAB,
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ToonDelimiter.PIPE => PIPE,
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_ => COMMA
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};
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/// <summary>Maps delimiter characters to enum; unknown characters fall back to comma.</summary>
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public static ToonDelimiter FromDelimiterChar(char delimiter) => delimiter switch
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{
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COMMA => ToonDelimiter.COMMA,
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TAB => ToonDelimiter.TAB,
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PIPE => ToonDelimiter.PIPE,
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_ => ToonDelimiter.COMMA
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};
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/// <summary>Returns whether the character is a supported delimiter.</summary>
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public static bool IsDelimiterChar(char c) => c == COMMA || c == TAB || c == PIPE;
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/// <summary>Returns whether the character is a whitespace character (space or tab).</summary>
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public static bool IsWhitespace(char c) => c == SPACE || c == TAB;
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/// <summary>Returns whether the character is a structural character.</summary>
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public static bool IsStructural(char c)
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=> c == COLON || c == OPEN_BRACKET || c == CLOSE_BRACKET || c == OPEN_BRACE || c == CLOSE_BRACE;
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// #endregion
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}
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/// <summary>
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/// TOON's unified options configuration, styled to align with System.Text.Json. Used to control indentation,
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/// delimiters, strict mode, length markers, and underlying JSON behavior.
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/// </summary>
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public enum ToonDelimiter
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{
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/// <summary>Comma ,</summary>
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COMMA,
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/// <summary>Tab \t</summary>
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TAB,
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/// <summary>Pipe |</summary>
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PIPE
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}
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/// <summary>
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/// Key folding options
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/// </summary>
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public enum ToonKeyFolding
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{
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/// <summary>Key folding disabled</summary>
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Off,
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/// <summary>Nested objects with single keys are collapsed into dotted paths</summary>
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Safe
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}
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}

‎sandbox/BenchmarkSuite/ToonFormat/Internal/Converters/DoubleNamedFloatToNullConverter.cs‎

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using System;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace ToonFormat.Internal.Converters
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{
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/// <summary>
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/// Normalizes double NaN/Infinity to null when writing JSON, keeping original numeric precision otherwise.
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/// Reading still uses default handling, no special conversion.
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/// Purpose: Consistent with TS spec (NaN/±Infinity -> null), and provides stable JsonElement for subsequent TOON encoding phase.
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/// </summary>
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internal sealed class DoubleNamedFloatToNullConverter : JsonConverter<double>
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{
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public override double Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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=> reader.GetDouble();
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public override void Write(Utf8JsonWriter writer, double value, JsonSerializerOptions options)
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{
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if (double.IsNaN(value) || double.IsInfinity(value))
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{
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writer.WriteNullValue();
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return;
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}
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writer.WriteNumberValue(value);
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}
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}
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}

‎sandbox/BenchmarkSuite/ToonFormat/Internal/Converters/SingleNamedFloatToNullConverter.cs‎

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using System;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace ToonFormat.Internal.Converters
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{
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/// <summary>
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/// Normalizes float NaN/Infinity to null when writing JSON; reading keeps default behavior.
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/// </summary>
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internal sealed class SingleNamedFloatToNullConverter : JsonConverter<float>
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{
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public override float Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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=> reader.GetSingle();
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public override void Write(Utf8JsonWriter writer, float value, JsonSerializerOptions options)
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{
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if (float.IsNaN(value) || float.IsInfinity(value))
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{
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writer.WriteNullValue();
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return;
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}
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writer.WriteNumberValue(value);
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}
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}
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}

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