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‎.gitignore‎

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bin/
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obj/
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/packages/
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riderModule.iml
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/_ReSharper.Caches/

‎Readme.md‎

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# System.Text.Json.Extensions
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This project tries to collect some extensions and converters that ease the usage of `System.Text.Json`.

‎System.Text.Json.Extensions.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "System.Text.Json.Extensions", "System.Text.Json.Extensions\System.Text.Json.Extensions.csproj", "{79DECB74-8532-4491-BCD8-B87789686689}"
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EndProject
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Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{E18A8452-2B48-4C7F-89C1-F0B81FDA6D7E}"
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ProjectSection(SolutionItems) = preProject
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Readme.md = Readme.md
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EndProjectSection
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "System.Text.Json.ExtensionsTest", "System.Text.Json.ExtensionsTest\System.Text.Json.ExtensionsTest.csproj", "{160C8D7A-C96E-4FCC-8585-7CE264641458}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{79DECB74-8532-4491-BCD8-B87789686689}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{79DECB74-8532-4491-BCD8-B87789686689}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{79DECB74-8532-4491-BCD8-B87789686689}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{79DECB74-8532-4491-BCD8-B87789686689}.Release|Any CPU.Build.0 = Release|Any CPU
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{160C8D7A-C96E-4FCC-8585-7CE264641458}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{160C8D7A-C96E-4FCC-8585-7CE264641458}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{160C8D7A-C96E-4FCC-8585-7CE264641458}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{160C8D7A-C96E-4FCC-8585-7CE264641458}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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EndGlobal

‎System.Text.Json.Extensions/System.Text.Json.Extensions.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>netstandard2.1</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="System.Text.Json" Version="4.7.2" />
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</ItemGroup>
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</Project>

‎System.Text.Json.Extensions/Utf8JsonReaderExtensions.cs‎

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using System.Text.Json.Serialization;
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using System.Text.Json.Serialization.Converters;
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namespace System.Text.Json.Extensions
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{
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public static class Utf8JsonReaderExtensions
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{
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/// <summary>
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/// Tries to read the next token as object of type <typeparamref name="T"/>.
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///
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/// Based on <see cref="JsonKeyValuePairConverter{TKey,TValue}.ReadProperty{T}"/>
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/// </summary>
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public static T ReadObject<T>(this ref Utf8JsonReader reader, JsonSerializerOptions options)
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{
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do
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{
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reader.Read();
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} while (reader.TokenType == JsonTokenType.Comment
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&& options.ReadCommentHandling == JsonCommentHandling.Skip);
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return GetObject<T>(ref reader, options);
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}
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/// <summary>
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/// Tries to read the current token as object of type <typeparamref name="T"/>.
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///
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/// Based on <see cref="JsonKeyValuePairConverter{TKey,TValue}.ReadProperty{T}"/>
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/// </summary>
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public static T GetObject<T>(this ref Utf8JsonReader reader, JsonSerializerOptions options)
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{
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var typeToConvert = typeof(T);
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// Attempt to use existing converter first before re-entering through JsonSerializer.Deserialize().
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// The default converter for objects does not parse null objects as null, so it is not used here.
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if (typeToConvert != typeof(object)
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&& options?.GetConverter(typeToConvert) is JsonConverter<T> keyConverter)
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{
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return keyConverter.Read(ref reader, typeToConvert, options);
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}
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else
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{
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return JsonSerializer.Deserialize<T>(ref reader, options);
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}
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}
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}
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}

‎System.Text.Json.ExtensionsTest/System.Text.Json.ExtensionsTest.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>netcoreapp3.1</TargetFramework>
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<IsPackable>false</IsPackable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
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<PackageReference Include="Shouldly" Version="3.0.2" />
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<PackageReference Include="xunit" Version="2.4.1" />
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<PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageReference>
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<PackageReference Include="coverlet.collector" Version="1.3.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageReference>
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\System.Text.Json.Extensions\System.Text.Json.Extensions.csproj" />
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</ItemGroup>
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</Project>

‎System.Text.Json.ExtensionsTest/Utf8JsonReaderExtensionsFixture.cs‎

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using System.Text.Json.Extensions;
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using Shouldly;
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using Xunit;
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namespace System.Text.Json.ExtensionsTest
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{
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public class Utf8JsonReaderExtensionsFixture
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{
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private class DummyObject
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{
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public string MyValue { get; set; }
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}
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[Fact]
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public void ReadObjectReadDummyObject()
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{
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var jsonReaderOptions = new JsonReaderOptions();
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var jsonSerializerOptions = new JsonSerializerOptions();
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var utf8Bytes = Encoding.UTF8.GetBytes("{\"MyValue\": \"MyValue\"}");
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var reader = new Utf8JsonReader(utf8Bytes, jsonReaderOptions);
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var dummyObject = reader.ReadObject<DummyObject>(jsonSerializerOptions);
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dummyObject.MyValue
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.ShouldBe("MyValue");
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}
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}
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}

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