Json code gen skeleton

eng/Versions.props

@@ -88,6 +88,10 @@
     <optimizationwindows_ntx64IBCCoreCLRVersion>99.99.99-master-20200228.3</optimizationwindows_ntx64IBCCoreCLRVersion>
     <optimizationlinuxx64IBCCoreCLRVersion>99.99.99-master-20200228.3</optimizationlinuxx64IBCCoreCLRVersion>
     <optimizationPGOCoreCLRVersion>99.99.99-master-20200228.3</optimizationPGOCoreCLRVersion>
+        <!-- Roslyn dependencies for source generation -->
+    <MicrosoftCodeAnalysisCSharpWorkspacesVersion>3.6.0-3.20207.2</MicrosoftCodeAnalysisCSharpWorkspacesVersion>
+    <MicrosoftCodeAnalysisAnalyzersVersion>3.0.0-beta2.final</MicrosoftCodeAnalysisAnalyzersVersion>
+    <MicrosoftCodeAnalysisVersion>3.6.0.0</MicrosoftCodeAnalysisVersion>
     <!-- Not auto-updated. -->
     <MicrosoftDiaSymReaderNativeVersion>1.7.0</MicrosoftDiaSymReaderNativeVersion>
     <SystemCommandLineVersion>2.0.0-beta1.20253.1</SystemCommandLineVersion>

src/libraries/System.Text.Json/System.Text.Json.sln

@@ -1,6 +1,7 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27213.1
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30204.135
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Text.Json.Tests", "tests\System.Text.Json.Tests.csproj", "{5F553243-042C-45C0-8E49-C739131E11C3}"
 	ProjectSection(ProjectDependencies) = postProject
@@ -20,7 +21,13 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{E107E9C1-E89
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ref", "ref", "{2E666815-2EDB-464B-9DF6-380BF4789AD4}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestUtilities", "..\Common\tests\TestUtilities\TestUtilities.csproj", "{C42D5CBB-DAC5-4892-8E69-ED3183A6409E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestUtilities", "..\Common\tests\TestUtilities\TestUtilities.csproj", "{C42D5CBB-DAC5-4892-8E69-ED3183A6409E}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "codegenerator", "codegenerator\codegenerator.csproj", "{08FDD841-6001-46AE-87A4-9DB2C7BAAC8C}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "codegenerator.UnitTests", "codegenerator.UnitTests\codegenerator.UnitTests.csproj", "{37E5E8FB-1220-49B3-BE0E-CFFC079DA040}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "codegenerator.Tests", "codegenerator.Tests\codegenerator.Tests.csproj", "{D6287A51-AE21-4680-BBF3-BE4BA4AFF311}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -44,6 +51,18 @@ Global
 		{C42D5CBB-DAC5-4892-8E69-ED3183A6409E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C42D5CBB-DAC5-4892-8E69-ED3183A6409E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C42D5CBB-DAC5-4892-8E69-ED3183A6409E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{08FDD841-6001-46AE-87A4-9DB2C7BAAC8C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{08FDD841-6001-46AE-87A4-9DB2C7BAAC8C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{08FDD841-6001-46AE-87A4-9DB2C7BAAC8C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{08FDD841-6001-46AE-87A4-9DB2C7BAAC8C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{37E5E8FB-1220-49B3-BE0E-CFFC079DA040}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{37E5E8FB-1220-49B3-BE0E-CFFC079DA040}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{37E5E8FB-1220-49B3-BE0E-CFFC079DA040}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{37E5E8FB-1220-49B3-BE0E-CFFC079DA040}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D6287A51-AE21-4680-BBF3-BE4BA4AFF311}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D6287A51-AE21-4680-BBF3-BE4BA4AFF311}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D6287A51-AE21-4680-BBF3-BE4BA4AFF311}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D6287A51-AE21-4680-BBF3-BE4BA4AFF311}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/libraries/System.Text.Json/codegenerator.Tests/JsonSerializerSourceGeneratorTests.cs

@@ -0,0 +1,15 @@
+using Xunit;
+
+namespace System.Text.Json.CodeGenerator.Tests
+{
+    // TODO(@kevinwkt): Temporary end2end tests to use the generated code using codegen.
+    public class JsonSerializerSouceGeneratorTests
+    {
+        // Temporary test to make sure code was generated.
+        [Fact]
+        public static void TestGeneratedCode()
+        {
+            Assert.Equal("Hello", HelloWorldGenerated.HelloWorld.SayHello());
+        }
+    }
+}

src/libraries/System.Text.Json/codegenerator.Tests/TestClasses/SampleClass.cs

@@ -0,0 +1,8 @@
+
+namespace System.Text.Json.CodeGenerator.Tests
+{
+    // TODO(@kevinwkt): Populate the folder with sample classes we want to source generate for.
+    public partial class SampleClass
+    {
+    }
+}

src/libraries/System.Text.Json/codegenerator.Tests/codegenerator.Tests.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFrameworks>$(NetCoreAppCurrent);$(NetFrameworkCurrent)</TargetFrameworks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\codegenerator\codegenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="JsonSerializerSourceGeneratorTests.cs" />
+    <Compile Include="TestClasses\SampleClass.cs" />
+  </ItemGroup>
+
+  <Target Name="FixIncrementalCoreCompileWithAnalyzers" BeforeTargets="CoreCompile">
+    <ItemGroup>
+      <CustomAdditionalCompileInputs Include="@(Analyzer)" />
+    </ItemGroup>
+  </Target>
+</Project>

src/libraries/System.Text.Json/codegenerator.UnitTests/CodeGeneratorTests.cs

@@ -0,0 +1,14 @@
+using Xunit;
+
+namespace System.Text.Json.CodeGenerator.UnitTests
+{
+    // TODO(@kevinwkt) Temporary test for CodeGenerator.
+    public class CodeGeneratorTests
+    {
+        [Fact]
+        public static void GenerateFromType()
+        {
+            CodeGenerator generator = new CodeGenerator();
+        }
+    }
+}

src/libraries/System.Text.Json/codegenerator.UnitTests/JsonSerializerSourceGeneratorTests.cs

@@ -0,0 +1,30 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Xunit;
+
+namespace System.Text.Json.CodeGenerator.UnitTests
+{
+    // TODO(@kevinwkt): Temporary unit tests for Source Generator.
+    public static class GeneratorTests
+    {
+        [Fact]
+        public static void SourceGeneratorInitializationPass()
+        {
+        }
+
+        [Fact]
+        public static void SourceGeneratorInitializationFail()
+        {
+        }
+
+        [Fact]
+        public static void SourceGeneratorExecutionPass()
+        {
+        }
+
+        [Fact]
+        public static void SourceGeneratorExecutionFail()
+        {
+        }
+    }
+}

src/libraries/System.Text.Json/codegenerator.UnitTests/codegenerator.UnitTests.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFrameworks>$(NetCoreAppCurrent);$(NetFrameworkCurrent)</TargetFrameworks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis" Version="$(MicrosoftCodeAnalysisVersion)" PrivateAssets="all" />
+    <ProjectReference Include="..\codegenerator\codegenerator.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="CodeGeneratorTests.cs" />
+    <Compile Include="JsonSerializerSourceGeneratorTests.cs" />
+  </ItemGroup>
+
+  <Target Name="FixIncrementalCoreCompileWithAnalyzers" BeforeTargets="CoreCompile">
+    <ItemGroup>
+      <CustomAdditionalCompileInputs Include="@(Analyzer)" />
+    </ItemGroup>
+  </Target>
+
+</Project>

src/libraries/System.Text.Json/codegenerator/CodeGenerator.cs

@@ -0,0 +1,9 @@
+
+namespace System.Text.Json.CodeGenerator
+{
+    // TODO(@kevinwkt): Logic involving types found through attributer to code transformation will mostly be here.
+    public class CodeGenerator
+    {
+        public CodeGenerator(){ }
+    }
+}

src/libraries/System.Text.Json/codegenerator/JsonSerializerSourceGenerator.cs

@@ -0,0 +1,58 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Text;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using System.Collections.Generic;
+
+namespace System.Text.Json.CodeGenerator
+{
+    // TODO(@kevinwkt): Base JsonSerializerSourceGenerator. This class will invoke CodeGenerator within Execute
+    // to generate wanted output code for JsonSerializers.
+    [Generator]
+    public class JsonSerializerSourceGenerator : ISourceGenerator
+    {
+        public void Execute(SourceGeneratorContext context)
+        {
+            // TODO(@kevinwkt): Foreach type found, call code generator.
+            // Temporary simple HelloWorld class.
+            StringBuilder sourceBuilder = new StringBuilder(@"
+using System;
+namespace HelloWorldGenerated
+{
+    public static class HelloWorld
+    {
+        public static string SayHello() 
+        {
+            return ""Hello"";
+");
+
+            sourceBuilder.Append(@"
+        }
+    }
+}");
+
+            context.AddSource("helloWorldGenerated", SourceText.From(sourceBuilder.ToString(), Encoding.UTF8));
+        }
+
+        public void Initialize(InitializationContext context)
+        {
+            context.RegisterForSyntaxNotifications(() => new JsonSerializableSyntaxReceiver());
+        }
+
+        // TODO(@kevinwkt): Search types with attribute JsonSerializable.
+        // Temporary function for now that reads all types.
+        internal class JsonSerializableSyntaxReceiver : ISyntaxReceiver
+        {
+            public List<TypeDeclarationSyntax> GeneratorInputTypes = new List<TypeDeclarationSyntax>();
+
+            public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
+            {
+                // TODO(@kevinwkt): For now get all the type decl in all syntax tree.
+                if (syntaxNode is TypeDeclarationSyntax tds)
+                {
+                    GeneratorInputTypes.Add(tds);
+                }
+            }
+        }
+
+    }
+}

src/libraries/System.Text.Json/codegenerator/codegenerator.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <CLSCompliant>false</CLSCompliant>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(MicrosoftCodeAnalysisCSharpWorkspacesVersion)" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="$(MicrosoftCodeAnalysisAnalyzersVersion)" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.DotNet.Build.Tasks.Packaging" Version="$(MicrosoftDotNetBuildTasksPackagingVersion)" PrivateAssets="all" />
+
+    <!-- update dependencies brought in transitively from CodeAnalysis to avoid referencing 1.x packages -->
+    <PackageReference Include="NETStandard.Library" Version="2.0.3" ExcludeAssets="All" />
+    <PackageReference Include="System.Composition" Version="1.4.1" />
+
+    <PackageDestination Include="analyzers\dotnet\cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="CodeGenerator.cs" />
+    <Compile Include="JsonSerializerSourceGenerator.cs" />
+  </ItemGroup>
+
+</Project>

src/libraries/System.Text.Json/pkg/System.Text.Json.pkgproj

@@ -5,6 +5,7 @@
     <ProjectReference Include="..\src\System.Text.Json.csproj">
       <SupportedFramework>net461;netcoreapp2.0;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
     </ProjectReference>
+    <ProjectReference Include="..\codegenerator\codegenerator.csproj" SkipPackageFileCheck="true" HarvestDependencies="false" />
     <!-- Since UAP and .NETCoreApp are package based we still want to enable
      OOBing libraries that happen to overlap with their framework package.
      This avoids us having to lock the API in our NuGet packages just 
@@ -15,4 +16,4 @@
     </ValidatePackageSuppression>
   </ItemGroup>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
+</Project>