now it's not a single project, but a solution

DTLib.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.32014.148
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DTLib", "DTLib\DTLib.csproj", "{B620E5E9-800F-4B2D-B4A5-062E05DB704F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestProgram", "TestProgram\TestProgram.csproj", "{72BA37EF-07EC-4D34-966A-20D5E83ADB32}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B620E5E9-800F-4B2D-B4A5-062E05DB704F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B620E5E9-800F-4B2D-B4A5-062E05DB704F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B620E5E9-800F-4B2D-B4A5-062E05DB704F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B620E5E9-800F-4B2D-B4A5-062E05DB704F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{72BA37EF-07EC-4D34-966A-20D5E83ADB32}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{72BA37EF-07EC-4D34-966A-20D5E83ADB32}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{72BA37EF-07EC-4D34-966A-20D5E83ADB32}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{72BA37EF-07EC-4D34-966A-20D5E83ADB32}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6D0413D6-AF96-46C3-9E67-858AE2482818}
+	EndGlobalSection
+EndGlobal

TestProgram/DtsodV2X/TestDtsodV23.cs

@@ -0,0 +1,89 @@
+using System.Threading;
+using DTLib.Dtsod;
+using DTLib.Experimental;
+using static TestProgram.Program;
+
+namespace TestProgram.DtsodV2X;
+
+public static class TestDtsodV23
+{
+    public static void TestAll()
+    {
+        TestBaseTypes();
+        TestLists();
+        TestComplexes();
+        TestReSerialization();
+        TestSpeed();
+        TestMemoryConsumption();
+    }
+
+    public static void TestBaseTypes()
+    {
+        Info.Log("b", "[TestDtsodV23/TestBaseTypes]");
+        DtsodV23 dtsod = new(File.ReadAllText("DtsodV2X\\base_types.dtsod"));
+        foreach (var pair in dtsod)
+            Info.LogNoTime("b", pair.Value.GetType().Name + ' ', "w", pair.Key + ' ', "c", pair.Value.ToString());
+        Info.Log("g", "[test completed]");
+    }
+    public static void TestLists()
+    {
+        Info.Log("b", "[TestDtsodV23/TestLists]");
+        DtsodV23 dtsod = new(File.ReadAllText("DtsodV2X\\lists.dtsod"));
+        foreach (var pair in dtsod)
+        {
+            Info.LogNoTime("b",  pair.Value.GetType().Name + ' ', "w", pair.Key, "c",
+                $" count: {pair.Value.Count}");
+            foreach (var el in pair.Value)
+                Info.LogNoTime("b", '\t'+el.GetType().Name + ' ', "c", el.ToString());
+        }
+        Info.Log("g", "[test completed]");
+    }
+
+    public static void TestComplexes()
+    {
+        Info.Log("b", "[TestDtsodV23/TestComplexes]");
+        DtsodV23 dtsod = new(File.ReadAllText("DtsodV2X\\complexes.dtsod"));
+        foreach (var pair in dtsod)
+        {
+            Info.LogNoTime("b", pair.Value.GetType().Name + ' ', "w", pair.Key, 
+                "b", " length: ", "c", pair.Value.Keys.Count.ToString() + "\n\t",
+                "y", pair.Value.ToString().Replace("\n","\n\t"));
+        }
+        Info.Log("g", "[test completed]");
+    }
+
+    public static void TestReSerialization()
+    {
+        Info.Log("b", "[TestDtsodV23/TestReSerialization]");
+        DtsodV23 dtsod = new DtsodV23(new DtsodV23(new DtsodV23(
+            new DtsodV23(File.ReadAllText("DtsodV2X\\complexes.dtsod")).ToString()).ToString()).ToString());
+        Info.Log("y", dtsod.ToString());
+        Info.Log("g", "[test completed]");
+    }
+
+    public static void TestSpeed()
+    {
+        Info.Log("b", "[TestDtsodV23/TestSpeed]");
+        IDtsod dtsod=null;
+        string text = File.ReadAllText("DtsodV2X\\messages.dtsod");
+        Tester.LogOperationTime("V21 deserialization",100,()=>dtsod=new DtsodV21(text));
+        Tester.LogOperationTime("V21 serialization", 100, () => _=dtsod.ToString());
+        Tester.LogOperationTime("V23 deserialization", 100, () => dtsod = new DtsodV23(text));
+        Tester.LogOperationTime("V23 serialization", 100, () => _ = dtsod.ToString());
+        Info.Log("g", "[test completed]");
+    }
+
+    public static void TestMemoryConsumption()
+    {
+        Info.Log("b", "[TestDtsodV23/TestMemoryConsumption]");
+        string text = File.ReadAllText("DtsodV2X\\messages.dtsod");
+        var a = GC.GetTotalMemory(true);
+        DtsodV23[] dtsods = new DtsodV23[100];
+        for (int i = 0; i < dtsods.Length; i++)
+            dtsods[i] = new(text);
+        var b = GC.GetTotalMemory(true);
+        Info.Log("b", "at the start: ","c",$"{a/1024} kb\n", 
+            "b", "at the end: ", "c", $"{b / 1024} kb\n{dtsods.Count()}","b"," dtsods initialized");
+        Info.Log("g", "[test completed]");
+    }
+}

TestProgram/DtsodV2X/base_types.dtsod

@@ -0,0 +1,14 @@
+bool: false;
+char: 'v';
+byte: 255b;
+sbyte: -125sb;
+short: 14003s;
+ushort: 32025us;
+int: -2515;
+uint: 0u;
+long: -29863854396l;
+ulong: 87659057946ul;
+float: 39.944f;
+double: 965.557;
+decimal: -84.20de;
+string: "_$\"\\\\'''\n\ta ûûû000;2;=:%d;```";

TestProgram/DtsodV2X/complexes.dtsod

@@ -0,0 +1,9 @@
+message:
+{
+    type: "sent";
+    time: "15.12.2021 20:51:24 +03:00";
+    author_id: 293798876950036480ul;
+    channel_id: 913088838761603212ul;
+    message_id: 920734809096077353ul;
+    text: "_$\"\\\\'''\n\ta ыыы000;2;=:%d;```";
+};

TestProgram/DtsodV2X/lists.dtsod

@@ -0,0 +1,4 @@
+chars: ['a','b','c'];
+uints: [10,20,30,0,0];
+floats: [8.2,5.225,-0.9993];
+strings:["aaa","bbb","ccc"];

TestProgram/DtsodV2X/null.dtsod

@@ -0,0 +1 @@
+nullable:null;

TestProgram/DtsodV30/base_types.dtsod

@@ -0,0 +1,14 @@
+bool:b=false;
+char:c='v';
+string:s="hello";
+byte:by=255;
+sbyte:sb=-125;
+short:sh=14003;
+ushort:us=32025;
+int:i=-2515;
+uint:ui=0;
+long:l=-29863854396;
+ulong:ul=87659057946;
+float:f=39.944;
+double:do=965.557;
+decimal:de=-84.20;

TestProgram/DtsodV30/enumerables.dtsod

@@ -0,0 +1 @@
+List<string>:list=[string:"a",string:"b"];

TestProgram/Program.cs

@@ -0,0 +1,36 @@
+global using System;
+global using System.Collections;
+global using System.Collections.Generic;
+global using System.Linq;
+global using System.Text;
+global using System.Threading.Tasks;
+global using DTLib;
+global using DTLib.Extensions;
+global using DTLib.Filesystem;
+using DTLib.Dtsod;
+using DTLib.Loggers;
+using TestProgram.DtsodV2X;
+
+namespace TestProgram;
+
+static class Program
+{
+    public static DefaultLogger Info = new();
+    static public void Main()
+    {
+
+        Info.Enable();
+        PublicLog.LogEvent += Info.Log;
+        PublicLog.LogNoTimeEvent += Info.LogNoTime;
+        Console.OutputEncoding = Encoding.UTF8;
+        Console.InputEncoding = Encoding.UTF8;
+        Console.Title="tester";
+        try
+        {
+            TestDtsodV23.TestAll();
+        }
+        catch (Exception ex)
+        { Info.Log("r", ex.ToString()); }
+        Console.ResetColor();
+    }
+}

TestProgram/TestProgram.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<OutputType>Exe</OutputType>
+		<TargetFramework>net6.0</TargetFramework>
+		<ImplicitUsings>false</ImplicitUsings>
+		<Nullable>disable</Nullable>
+		<DebugType>portable</DebugType>
+		<CheckForOverflowUnderflow>True</CheckForOverflowUnderflow>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+		<StartupObject>TestProgram.Program</StartupObject>
+		<ProduceReferenceAssembly>False</ProduceReferenceAssembly>
+	</PropertyGroup>
+	<ItemGroup>
+	  <ProjectReference Include="..\DTLib\DTLib.csproj" />
+	</ItemGroup>
+	<ItemGroup>
+	  <None Update="DtsodV2X\*">
+	    <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+	  </None>
+	  <None Update="DtsodV30\*">
+	    <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+	  </None>
+	</ItemGroup>
+</Project>

TestProgram/bin/Debug/net6.0/DtsodV2X/base_types.dtsod

@@ -0,0 +1,14 @@
+bool: false;
+char: 'v';
+byte: 255b;
+sbyte: -125sb;
+short: 14003s;
+ushort: 32025us;
+int: -2515;
+uint: 0u;
+long: -29863854396l;
+ulong: 87659057946ul;
+float: 39.944f;
+double: 965.557;
+decimal: -84.20de;
+string: "_$\"\\\\'''\n\ta ûûû000;2;=:%d;```";

TestProgram/bin/Debug/net6.0/DtsodV2X/complexes.dtsod

@@ -0,0 +1,9 @@
+message:
+{
+    type: "sent";
+    time: "15.12.2021 20:51:24 +03:00";
+    author_id: 293798876950036480ul;
+    channel_id: 913088838761603212ul;
+    message_id: 920734809096077353ul;
+    text: "_$\"\\\\'''\n\ta ыыы000;2;=:%d;```";
+};

TestProgram/bin/Debug/net6.0/DtsodV2X/lists.dtsod

@@ -0,0 +1,4 @@
+chars: ['a','b','c'];
+uints: [10,20,30,0,0];
+floats: [8.2,5.225,-0.9993];
+strings:["aaa","bbb","ccc"];

TestProgram/bin/Debug/net6.0/DtsodV2X/null.dtsod

@@ -0,0 +1 @@
+nullable:null;

TestProgram/bin/Debug/net6.0/DtsodV30/base_types.dtsod

@@ -0,0 +1,14 @@
+bool:b=false;
+char:c='v';
+string:s="hello";
+byte:by=255;
+sbyte:sb=-125;
+short:sh=14003;
+ushort:us=32025;
+int:i=-2515;
+uint:ui=0;
+long:l=-29863854396;
+ulong:ul=87659057946;
+float:f=39.944;
+double:do=965.557;
+decimal:de=-84.20;

TestProgram/bin/Debug/net6.0/DtsodV30/enumerables.dtsod

@@ -0,0 +1 @@
+List<string>:list=[string:"a",string:"b"];

TestProgram/bin/Debug/net6.0/TestProgram.deps.json

@@ -0,0 +1,36 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v6.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v6.0": {
+      "TestProgram/1.0.0": {
+        "dependencies": {
+          "DTLib": "1.0.0"
+        },
+        "runtime": {
+          "TestProgram.dll": {}
+        }
+      },
+      "DTLib/1.0.0": {
+        "runtime": {
+          "DTLib.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "TestProgram/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "DTLib/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

TestProgram/bin/Debug/net6.0/TestProgram.runtimeconfig.json

@@ -0,0 +1,9 @@
+{
+  "runtimeOptions": {
+    "tfm": "net6.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "6.0.0"
+    }
+  }
+}

TestProgram/bin/Release/net6.0/DtsodV2X/base_types.dtsod

@@ -0,0 +1,14 @@
+bool: false;
+char: 'v';
+byte: 255b;
+sbyte: -125sb;
+short: 14003s;
+ushort: 32025us;
+int: -2515;
+uint: 0u;
+long: -29863854396l;
+ulong: 87659057946ul;
+float: 39.944f;
+double: 965.557;
+decimal: -84.20de;
+string: "_$\"\\\\'''\n\ta ûûû000;2;=:%d;```";

TestProgram/bin/Release/net6.0/DtsodV2X/complexes.dtsod

@@ -0,0 +1,9 @@
+message:
+{
+    type: "sent";
+    time: "15.12.2021 20:51:24 +03:00";
+    author_id: 293798876950036480ul;
+    channel_id: 913088838761603212ul;
+    message_id: 920734809096077353ul;
+    text: "_$\"\\\\'''\n\ta ыыы000;2;=:%d;```";
+};

TestProgram/bin/Release/net6.0/DtsodV2X/lists.dtsod

@@ -0,0 +1,4 @@
+chars: ['a','b','c'];
+uints: [10,20,30,0,0];
+floats: [8.2,5.225,-0.9993];
+strings:["aaa","bbb","ccc"];

TestProgram/bin/Release/net6.0/DtsodV2X/null.dtsod

@@ -0,0 +1 @@
+nullable:null;

TestProgram/bin/Release/net6.0/DtsodV30/base_types.dtsod

@@ -0,0 +1,14 @@
+bool:b=false;
+char:c='v';
+string:s="hello";
+byte:by=255;
+sbyte:sb=-125;
+short:sh=14003;
+ushort:us=32025;
+int:i=-2515;
+uint:ui=0;
+long:l=-29863854396;
+ulong:ul=87659057946;
+float:f=39.944;
+double:do=965.557;
+decimal:de=-84.20;

TestProgram/bin/Release/net6.0/DtsodV30/enumerables.dtsod

@@ -0,0 +1 @@
+List<string>:list=[string:"a",string:"b"];

TestProgram/bin/Release/net6.0/TestProgram.deps.json

@@ -0,0 +1,36 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v6.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v6.0": {
+      "TestProgram/1.0.0": {
+        "dependencies": {
+          "DTLib": "1.0.0"
+        },
+        "runtime": {
+          "TestProgram.dll": {}
+        }
+      },
+      "DTLib/1.0.0": {
+        "runtime": {
+          "DTLib.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "TestProgram/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "DTLib/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

TestProgram/bin/Release/net6.0/TestProgram.runtimeconfig.json

@@ -0,0 +1,12 @@
+{
+  "runtimeOptions": {
+    "tfm": "net6.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "6.0.0"
+    },
+    "configProperties": {
+      "System.Reflection.Metadata.MetadataUpdater.IsSupported": false
+    }
+  }
+}

TestProgram/obj/Debug/net6.0/.NETCoreApp,Version=v6.0.AssemblyAttributes.cs

@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v6.0", FrameworkDisplayName = "")]

TestProgram/obj/Debug/net6.0/TestProgram.AssemblyInfo.cs

@@ -0,0 +1,23 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Этот код создан программой.
+//     Исполняемая версия:4.0.30319.42000
+//
+//     Изменения в этом файле могут привести к неправильной работе и будут потеряны в случае
+//     повторной генерации кода.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("TestProgram")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("TestProgram")]
+[assembly: System.Reflection.AssemblyTitleAttribute("TestProgram")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Создано классом WriteCodeFragment MSBuild.
+

TestProgram/obj/Debug/net6.0/TestProgram.AssemblyInfoInputs.cache

@@ -0,0 +1 @@
+50807496b7e03e652e948152d6f734ad8f046635

TestProgram/obj/Debug/net6.0/TestProgram.GeneratedMSBuildEditorConfig.editorconfig

@@ -0,0 +1,10 @@
+is_global = true
+build_property.TargetFramework = net6.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = TestProgram
+build_property.ProjectDir = C:\projects\c#\DTLib\TestProgram\

TestProgram/obj/Debug/net6.0/TestProgram.csproj.CoreCompileInputs.cache

@@ -0,0 +1 @@
+3fc818a7aa42b85417b1a9a4ad4c679fab7ccd44

TestProgram/obj/Debug/net6.0/TestProgram.csproj.FileListAbsolute.txt

@@ -0,0 +1,23 @@
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.csproj.AssemblyReference.cache
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.GeneratedMSBuildEditorConfig.editorconfig
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.AssemblyInfoInputs.cache
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.AssemblyInfo.cs
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.csproj.CoreCompileInputs.cache
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\TestProgram.exe
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV2X\base_types.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV2X\lists.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV2X\null.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV30\base_types.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV30\enumerables.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\TestProgram.deps.json
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\TestProgram.runtimeconfig.json
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\TestProgram.dll
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\TestProgram.pdb
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DTLib.dll
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DTLib.pdb
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.csproj.CopyComplete
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.dll
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.pdb
+C:\projects\c#\DTLib\TestProgram\obj\Debug\net6.0\TestProgram.genruntimeconfig.cache
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV2X\complexes.dtsod
+C:\projects\c#\DTLib\TestProgram\bin\Debug\net6.0\DtsodV2X\messages.dtsod