Remove unsupported TFMs

.editorconfig

@@ -78,6 +78,10 @@ csharp_style_throw_expression = true:suggestion
 csharp_style_conditional_delegate_call = true:suggestion
 
 dotnet_style_require_accessibility_modifiers = omit_if_default:warning
+
+# ArgumentNullException.ThrowIfNull not present in some TFMs
+dotnet_diagnostic.CA1510.severity = none
+
 # hack: suppress analyzers on the imported file Options.cs
 [Options.cs]
 generated_code = true

.github/workflows/build.yml

@@ -24,10 +24,8 @@ jobs:
       uses: actions/setup-dotnet@v2
       with:
         dotnet-version: |
-          2.1.x
-          3.1.x
-          5.0.x
           6.0.x
+          7.0.x
 
     - name: Find MSBuild
       if: startsWith(matrix.os, 'windows')

Directory.Build.props

@@ -16,7 +16,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="3.4.255" PrivateAssets="all" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.6.133" PrivateAssets="all" />
   </ItemGroup>
 
   <!-- reproducible build -->
@@ -29,7 +29,7 @@
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
   </ItemGroup>
 
   <PropertyGroup>

Mono.TextTemplating.Build.Tests/MSBuildExecutionTests.cs

@@ -9,6 +9,8 @@
 
 namespace Mono.TextTemplating.Tests
 {
+	// MSBuild relies on changing the current working directory to the project directory so we need to run tests serially
+	[CollectionDefinition (nameof (MSBuildExecutionTests), DisableParallelization = true)]
 	public class MSBuildExecutionTests : IClassFixture<MSBuildFixture>
 	{
 		[Fact]

Mono.TextTemplating.Build.Tests/MSBuildTestContext.cs

@@ -45,7 +45,7 @@ public MSBuildTestContext ([CallerMemberName] string testName = null, bool creat
 
 		public ProjectCollection Engine { get; }
 
-		static ILogger CreateBinLogger (string testName) => new BinaryLogger { Parameters = $"LogFile=binlogs/{testName}.binlog" };
+		static BinaryLogger CreateBinLogger (string testName) => new BinaryLogger { Parameters = $"LogFile=binlogs/{testName}.binlog" };
 
 		public void Dispose ()
 		{
@@ -71,7 +71,7 @@ public MSBuildTestProject LoadTestProject (string projectName = null, [CallerMem
 		}
 	}
 
-	class MSBuildTestProject
+	sealed class MSBuildTestProject
 	{
 		public MSBuildTestProject (MSBuildTestContext context, Project project)
 		{
@@ -125,7 +125,7 @@ public MSBuildTestProject WithProperty (string name, string value)
 		}
 	}
 
-	class MSBuildTestErrorLogger : ILogger
+	sealed class MSBuildTestErrorLogger : ILogger
 	{
 		public List<BuildEventArgs> ErrorsAndWarnings { get; } = new List<BuildEventArgs> ();
 
@@ -188,7 +188,7 @@ public static void AssertPaths (this ICollection<ProjectItemInstance> items, par
 			var actualPaths = items.Select (item => item.GetMetadataValue ("FullPath")).ToHashSet ();
 			foreach (var expectedPath in expectedFullPaths) {
 				if (!actualPaths.Remove (expectedPath)) {
-					throw new Xunit.Sdk.ContainsException (expectedPath, actualPaths);
+					throw Xunit.Sdk.ContainsException.ForSetItemNotFound ("\"" + expectedPath + "\"", "\"" + string.Join ("\", \"", actualPaths) + "\"");
 				}
 			}
 			Assert.Empty (actualPaths);
@@ -232,7 +232,7 @@ public static TestDataPath GetIntermediateDirFile (this ProjectInstance instance
 			=> GetIntermediateDir (instance).Combine (paths);
 	}
 
-	class MSBuildFixture
+	sealed class MSBuildFixture
 	{
 		public MSBuildFixture () => MSBuildTestHelpers.RegisterMSBuildAssemblies ();
 	}

Mono.TextTemplating.Build.Tests/MSBuildTestHelpers.cs

@@ -41,7 +41,9 @@ public static void RegisterMSBuildAssemblies ()
 				//attempt to read the msbuild.dll location from the launch script
 				//FIXME: handle quoting in the script
 				Console.WriteLine ("Found msbuild script in PATH: {0}", msbuildInPath);
+#pragma warning disable CA1861 // Avoid constant arrays as arguments
 				var tokens = File.ReadAllText (msbuildInPath).Split (new [] { ' ', '\t', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
+#pragma warning restore CA1861 // Avoid constant arrays as arguments
 				var filename = tokens.FirstOrDefault (t => t.EndsWith ("MSBuild.dll", StringComparison.OrdinalIgnoreCase));
 				if (filename != null && File.Exists (filename)) {
 					var dir = Path.GetDirectoryName (filename);

Mono.TextTemplating.Build.Tests/Mono.TextTemplating.Build.Tests.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net6.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('Windows'))">net48;$(TargetFrameworks)</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <DefaultItemExcludes>$(DefaultItemExcludes);TestCases\**</DefaultItemExcludes>
   </PropertyGroup>
@@ -10,32 +11,27 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Build.Locator" Version="1.5.5" />
-    <PackageReference Include="Microsoft.Build" Version="17.3.1" ExcludeAssets="runtime" />
-    <PackageReference Include="Microsoft.Build.Framework" Version="17.3.1" ExcludeAssets="runtime" />
-    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.3.1" ExcludeAssets="runtime" />
-    <PackageReference Include="System.Reflection.MetadataLoadContext" Version ="6.0.0" />
+    <PackageReference Include="Microsoft.Build.Locator" Version="1.6.10" />
+    <PackageReference Include="Microsoft.Build" Version="17.3.2" ExcludeAssets="runtime" />
+    <PackageReference Include="Microsoft.Build.Framework" Version="17.3.2" ExcludeAssets="runtime" />
+    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.3.2" ExcludeAssets="runtime" />
+    <PackageReference Include="System.Reflection.MetadataLoadContext" Version="7.0.0" />
     <!--
     Microsoft.NET.Test.Sdk brings in a version of NuGet.Frameworks that's older than the one used by MSBuild
     and loads first, thereby breaking loading of MSBuild assemblies. Force-upgrade it.
     -->
-    <PackageReference Include="NuGet.Frameworks" Version="6.3.1" />
-    <PackageReference Include="System.Text.Json" Version="6.0.6" />
+    <PackageReference Include="NuGet.Frameworks" Version="6.7.0" />
+    <PackageReference Include="System.Text.Json" Version="7.0.3" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="xunit" Version="2.4.2" />
-    <!-- newer versions drop netcoreapp2.1 -->
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
-    <!-- seems to be required for tests to run on Mono -->
-    <PackageReference Include="Microsoft.TestPlatform.ObjectModel" Version="17.3.2" Condition="'$(TargetFramework)'=='net472' And $([MSBuild]::IsOSUnixLike())" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
+    <PackageReference Include="xunit" Version="2.5.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
   </ItemGroup>
 
   <ItemGroup>
     <None Include="TestCases\**\*.*" />
-    <!-- disable parallel test execution on github actions, it hangs the runner there -->
-    <None Include="..\Mono.TextTemplating.Tests\xunit.runner.json" CopyToOutputDirectory="PreserveNewest" Condition="'$(GITHUB_ACTIONS)'=='true'" />
     <Compile Include="..\Mono.TextTemplating.Tests\Platform.cs" />
     <Compile Include="..\Mono.TextTemplating.Tests\TestDataPath.cs" />
   </ItemGroup>

Mono.TextTemplating.Build/MSBuildTemplateGenerator.cs

@@ -8,7 +8,7 @@
 
 namespace Mono.TextTemplating.Build
 {
-	class MSBuildTemplateGenerator : TemplateGenerator
+	sealed class MSBuildTemplateGenerator : TemplateGenerator
 	{
 		public MSBuildTemplateGenerator ()
 		{

Mono.TextTemplating.Build/MSBuildTemplateSession.cs

@@ -10,7 +10,7 @@
 
 namespace Mono.TextTemplating.Build
 {
-	class MSBuildTemplateSession : ITextTemplatingSession
+	sealed class MSBuildTemplateSession : ITextTemplatingSession
 	{
 		readonly Dictionary<string, object> session = new Dictionary<string, object> ();
 		readonly MSBuildTemplateGenerator toolTemplateGenerator;

Mono.TextTemplating.Build/Mono.TextTemplating.Build.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.1;net472</TargetFrameworks>
+    <TargetFrameworks>net48;net6.0</TargetFrameworks>
     <PackageId>T4.BuildTools</PackageId>
     <Description>MSBuild build targets for the T4 templating language, a general-purpose way to generate text or code files using C#</Description>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
@@ -10,6 +10,7 @@
          end up loading Mono.TextTemplating.dll for the wrong runtime -->
     <BuildOutputTargetFolder>buildTasks</BuildOutputTargetFolder>
     <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <NeutralLanguage>en-US</NeutralLanguage>
   </PropertyGroup>
 
   <Target Name="AddTargetsFilesToPack" BeforeTargets="GenerateNuspec">
@@ -29,11 +30,12 @@
   </Target>
 
   <ItemGroup>
-    <PackageReference Include="MessagePackAnalyzer" Version="2.2.85" PrivateAssets="all" />
-    <PackageReference Include="MessagePack" Version="2.2.85" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.Build.Framework" Version="15.1.548" PrivateAssets="all" IncludeAssets="compile" />
-    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="15.1.548" PrivateAssets="all" IncludeAssets="compile" />
     <ProjectReference Include="..\Mono.TextTemplating\Mono.TextTemplating.csproj" PrivateAssets="all" />
+    <PackageReference Include="MessagePackAnalyzer" Version="2.5.129" PrivateAssets="all" />
+    <PackageReference Include="MessagePack" Version="2.5.129" PrivateAssets="all" />
+    <!-- intentionally downlevel these so they can be loaded in older VS versions -->
+    <PackageReference Include="Microsoft.Build.Framework" Version="17.0.0" PrivateAssets="all" IncludeAssets="compile" />
+    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.0.0" PrivateAssets="all" IncludeAssets="compile" />
   </ItemGroup>
 
   <ItemGroup>

Mono.TextTemplating.Build/TemplateBuildState.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 
 using MessagePack;
@@ -16,10 +17,10 @@ namespace Mono.TextTemplating.Build
 	[MessagePackObject]
 	public class TemplateBuildState
 	{
-		public const int CURRENT_FORMAT_VERSION = 0;
+		public const int CurrentFormatVersion = 0;
 
 		[Key (0)]
-		public int FormatVersion { get; set; } = CURRENT_FORMAT_VERSION;
+		public int FormatVersion { get; set; } = CurrentFormatVersion;
 		[Key (1)]
 		public string DefaultNamespace { get; set; }
 		[Key (2)]
@@ -185,6 +186,8 @@ public bool Equals (DirectiveProcessor other)
 				=> Name == other?.Name && Class == other.Name && Assembly == other?.Assembly;
 
 			public override bool Equals (object obj) => Equals (obj as DirectiveProcessor);
+
+			public override int GetHashCode () => HashCode.Combine (Name, Class, Assembly);
 		}
 
 		[MessagePackObject]
@@ -203,6 +206,8 @@ public bool Equals (Parameter other)
 				=> Processor == other?.Processor && Directive == other.Directive && Name == other?.Name && Value == other?.Value;
 
 			public override bool Equals (object obj) => Equals (obj as Parameter);
+
+			public override int GetHashCode () => HashCode.Combine (Processor, Directive, Name, Value);
 		}
 
 		// TODO: cache warnings
@@ -280,5 +285,13 @@ public bool IsStale (Func<string, DateTime?> getFileWriteTime, TaskLoggingHelper
 				return false;
 			}
 		}
+
+#if !NETCOREAPP2_1_OR_GREATER
+		struct HashCode
+		{
+			public static int Combine<T1, T2, T3> (T1 value1, T2 value2, T3 value3) => (value1?.GetHashCode () ?? 0) ^ (value2?.GetHashCode () ?? 0) ^ (value3?.GetHashCode () ?? 0);
+			public static int Combine<T1, T2, T3, T4> (T1 value1, T2 value2, T3 value3, T4 value4) => Combine (value1, value2, value3) ^ (value4?.GetHashCode () ?? 0);
+		}
+#endif
 	}
 }

Mono.TextTemplating.Build/TextTransform.cs

@@ -260,7 +260,7 @@ TemplateBuildState LoadBuildState (string filePath, MessagePackSerializerOptions
 
 				var state =  MessagePackSerializer.Deserialize<TemplateBuildState> (stream, options);
 
-				if (state.FormatVersion != TemplateBuildState.CURRENT_FORMAT_VERSION) {
+				if (state.FormatVersion != TemplateBuildState.CurrentFormatVersion) {
 					Log.LogMessageFromResources (MessageImportance.Low, nameof(Messages.BuildStateFormatChanged));
 				}
 

Mono.TextTemplating.Build/TextTransformProcessor.cs

@@ -209,7 +209,7 @@ static MSBuildTemplateGenerator CreateGenerator (TemplateBuildState buildState)
 			return generator;
 		}
 
-		class WriteTimeCache
+		sealed class WriteTimeCache
 		{
 			public DateTime? GetWriteTime (string filepath)
 			{

Mono.TextTemplating.Roslyn/Mono.TextTemplating.Roslyn.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp2.1;net472</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net472;net6.0</TargetFrameworks>
     <PackageId>Mono.TextTemplating.Roslyn</PackageId>
     <DefaultNamespace>Mono.TextTemplating</DefaultNamespace>
     <Description>In-process Roslyn compiler for the Mono.TextTemplating T4 templating engine</Description>
@@ -11,8 +11,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
-    <None Include="readme.md" Pack="true" PackagePath="\"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.7.0" />
+    <None Include="readme.md" Pack="true" PackagePath="\" />
     <ProjectReference Include="..\Mono.TextTemplating\Mono.TextTemplating.csproj" />
   </ItemGroup>
 </Project>

Mono.TextTemplating.Roslyn/RoslynCodeCompiler.cs

@@ -17,7 +17,7 @@
 
 namespace Mono.TextTemplating
 {
-	class RoslynCodeCompiler : CodeCompiler
+	sealed class RoslynCodeCompiler : CodeCompiler
 	{
 		readonly RuntimeInfo runtime;
 
@@ -102,7 +102,7 @@
 				var startLinePosition = location.StartLinePosition;
 				var endLinePosition = location.EndLinePosition;
 				return new CodeCompilerError {
 					Message = x.GetMessage (),
 					Column = startLinePosition.Character,
 					Line = startLinePosition.Line,
 					EndLine = endLinePosition.Line,

Mono.TextTemplating.Roslyn/RoslynCodeCompilerException.cs

@@ -1,16 +1,14 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using System;
-using System.Runtime.Serialization;
 
 namespace Mono.TextTemplating
 {
 	[Serializable]
-	class RoslynCodeCompilerException : Exception
+	sealed class RoslynCodeCompilerException : Exception
 	{
 		public RoslynCodeCompilerException () { }
 		public RoslynCodeCompilerException (string message) : base (message) { }
 		public RoslynCodeCompilerException (string message, Exception inner) : base (message, inner) { }
-		protected RoslynCodeCompilerException (SerializationInfo info, StreamingContext context) : base (info, context) { }
 	}
 }

Mono.TextTemplating.Tests/AppDomainTests.cs

@@ -107,7 +107,7 @@ static TestTemplateGeneratorWithAppDomain CreateGeneratorWithAppDomain (
 
 	static string GetAppDomainNameForCurrentTest ([CallerMemberName] string testName = null) => $"Template Test - {testName ?? "(unknown)"}";
 
-	class TestTemplateGeneratorWithAppDomain : TemplateGenerator
+	sealed class TestTemplateGeneratorWithAppDomain : TemplateGenerator
 	{
 		AppDomain appDomain;
 		public TestTemplateGeneratorWithAppDomain (AppDomain appDomain) => this.appDomain = appDomain;

Mono.TextTemplating.Tests/GenerateIndentedClassCodeTests.cs

@@ -49,13 +49,13 @@ public void FieldAndPropertyGenerated ()
 			Assert.Equal (expectedOutput, output);
 		}
 
-		static CodeTypeMember CreateBoolField ()
+		static CodeMemberField CreateBoolField ()
 		{
 			var type = new CodeTypeReference (typeof(bool));
 			return new CodeMemberField { Name = "myField", Type = type };
 		}
 
-		static CodeTypeMember CreateBoolProperty ()
+		static CodeMemberProperty CreateBoolProperty ()
 		{
 			var type = new CodeTypeReference (typeof(bool));
 			var prop = new CodeMemberProperty { Name = "MyProperty", Type = type };

Mono.TextTemplating.Tests/GenerationTests.cs

@@ -89,7 +89,7 @@ static void GenerateOutput (string input, string expectedOutput, string newline)
 
 		#region Helpers
 
-		static string GenerateCode (ITextTemplatingEngineHost host, string content, string name, string generatorNewline)
+		static string GenerateCode (DummyHost host, string content, string name, string generatorNewline)
 		{
 			var pt = ParsedTemplate.FromTextInternal (content, host);
 			if (pt.Errors.HasErrors) {