sebastienros · lahma · Feb 3, 2022
diff --git a/Directory.Packages.props b/Directory.Packages.props
@@ -6,24 +6,33 @@
   <ItemGroup>
     <PackageVersion Include="BenchmarkDotNet" Version="0.13.10" />
     <PackageVersion Include="Esprima" Version="3.0.2" />
+    <PackageVersion Include="Fluid.Core" Version="2.5.0" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageVersion Include="Flurl.Http.Signed" Version="3.2.4" />
     <PackageVersion Include="Jurassic" Version="3.2.7" />
-    <PackageVersion Include="Meziantou.Analyzer" Version="2.0.110" />
+    <PackageVersion Include="Meziantou.Analyzer" Version="2.0.112" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" PrivateAssets="all" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.FileProviders.Abstractions" Version="1.1.1" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageVersion Include="MongoDB.Bson.signed" Version="2.19.0" />
+    <PackageVersion Include="NUnit" Version="3.14.0" />
+    <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="NiL.JS" Version="2.5.1674" />
     <PackageVersion Include="NodaTime" Version="3.1.9" />
-    <PackageVersion Include="NUnit" Version="3.14.0" />
-    <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
+    <PackageVersion Include="Parlot" Version="0.0.24" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageVersion Include="SharpZipLib" Version="1.4.0" />
     <PackageVersion Include="Spectre.Console.Cli" Version="0.45.0" />
+    <PackageVersion Include="System.Runtime.CompilerServices.Unsafe" Version="4.5.3" />
+    <PackageVersion Include="System.Text.Encodings.Web" Version="6.0.0" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageVersion Include="System.Text.Json" Version="6.0.8" />
     <PackageVersion Include="Test262Harness" Version="0.0.22" />
+    <PackageVersion Include="Verify.SourceGenerators" Version="2.2.0" />
+    <PackageVersion Include="Verify.XUnit" Version="22.5.0" />
+    <PackageVersion Include="YantraJS.Core" Version="1.2.206" />
     <PackageVersion Include="xunit" Version="2.6.2" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.4" PrivateAssets="all" />
-    <PackageVersion Include="YantraJS.Core" Version="1.2.206" />
   </ItemGroup>
   <ItemGroup>
     <GlobalPackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />

diff --git a/Jint.SourceGenerators/FunctionDefinition.cs b/Jint.SourceGenerators/FunctionDefinition.cs
@@ -0,0 +1,98 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace Jint.SourceGenerators;
+
+internal class FunctionDefinition : IComparable
+{
+    public FunctionDefinition(IMethodSymbol method, AttributeData attribute)
+    {
+        var attributes = SourceGenerationHelper.GetAttributes((AttributeSyntax) attribute.ApplicationSyntaxReference!.GetSyntax());
+        attributes.TryGetValue("Name", out var name);
+        attributes.TryGetValue("Length", out var length);
+
+        if (string.IsNullOrWhiteSpace(name))
+        {
+            name = method.Name;
+            if (char.IsUpper(name[0]))
+            {
+                name = char.ToLowerInvariant(name[0]) + name.Substring(1);
+            }
+        }
+
+        Name = name ?? throw new InvalidOperationException("Could not get name");
+        ClrName = method.Name;
+
+        ProvideThis = method.Parameters.Any(x => x.Name.StartsWith("thisObj"));
+        ProvideArguments = method.Parameters.Any(x => x.Name == "args" ||  x.Name.StartsWith("arguments"));
+
+        IsStatic = method.IsStatic;
+
+        if (string.IsNullOrWhiteSpace(length))
+        {
+            Length = method.Parameters.Length;
+            if (ProvideThis)
+            {
+                Length--;
+            }
+        }
+        else
+        {
+            Length = Convert.ToInt32(length);
+        }
+
+        ParametersString = "";
+        var needsComma = false;
+        if (ProvideThis)
+        {
+            needsComma = true;
+            ParametersString += "thisObject";
+        }
+
+        var tmp = method.Parameters.Length;
+        if (ProvideThis)
+        {
+            tmp--;
+        }
+
+        if (ProvideArguments)
+        {
+            tmp--;
+        }
+
+        for (var i = 0; i < tmp; ++i)
+        {
+            if (i > 0 || needsComma)
+            {
+                ParametersString += ", ";
+            }
+
+            ParametersString += "arguments.At(" + i + ")";
+        }
+
+        // arguments always last
+        if (ProvideArguments)
+        {
+            if (needsComma)
+            {
+                ParametersString += ", ";
+            }
+            ParametersString += "arguments";
+        }
+    }
+
+    public string Name { get; }
+    public string ClrName { get; }
+    public bool IsStatic { get; }
+    public int Length { get; }
+
+    public bool ProvideThis { get; }
+    public bool ProvideArguments { get; }
+
+    public string ParametersString { get; }
+
+    public int CompareTo(object obj)
+    {
+        return string.Compare(Name, (obj as FunctionDefinition)?.Name, StringComparison.Ordinal);
+    }
+}
diff --git a/Jint.SourceGenerators/Jint.SourceGenerators.csproj b/Jint.SourceGenerators/Jint.SourceGenerators.csproj
@@ -0,0 +1,45 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <LangVersion>latest</LangVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" PrivateAssets="all"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" PrivateAssets="all"/>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Fluid.Core" PrivateAssets="all" GeneratePathProperty="true"/>
+    <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" PrivateAssets="all" GeneratePathProperty="true"/>
+    <PackageReference Include="Parlot" GeneratePathProperty="true"/>
+    <PackageReference Include="System.Text.Encodings.Web" PrivateAssets="all" GeneratePathProperty="true"/>
+  </ItemGroup>
+
+  <PropertyGroup>
+    <GetTargetPathDependsOn>$(GetTargetPathDependsOn);GetDependencyTargetPaths</GetTargetPathDependsOn>
+  </PropertyGroup>
+
+  <Target Name="GetDependencyTargetPaths">
+    <ItemGroup>
+      <TargetPathWithTargetPlatformMoniker Include="$(PkgFluid_Core)\lib\netstandard2.0\Fluid.dll" IncludeRuntimeDependency="false"/>
+      <TargetPathWithTargetPlatformMoniker Include="$(PkgMicrosoft_Extensions_FileProviders_Abstractions)\lib\netstandard1.0\Microsoft.Extensions.FileProviders.Abstractions.dll" IncludeRuntimeDependency="false"/>
+      <TargetPathWithTargetPlatformMoniker Include="$(PkgParlot)\lib\netstandard2.0\Parlot.dll" IncludeRuntimeDependency="false"/>
+      <TargetPathWithTargetPlatformMoniker Include="$(PkgSystem_Text_Encodings_Web)\lib\netstandard2.0\System.Text.Encodings.Web.dll" IncludeRuntimeDependency="false"/>
+    </ItemGroup>
+  </Target>
+
+  <ItemGroup>
+    <EmbeddedResource Include="Templates\*.liquid"/>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Include="..\Jint\HighPerformance\*.cs" LinkBase="Referenced"/>
+  </ItemGroup>
+
+</Project>
diff --git a/Jint.SourceGenerators/ObjectDefinition.cs b/Jint.SourceGenerators/ObjectDefinition.cs
@@ -0,0 +1,60 @@
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace Jint.SourceGenerators;
+
+internal class ObjectDefinition
+{
+    public ObjectDefinition(
+        ClassDeclarationSyntax syntax,
+        List<FunctionDefinition> functions,
+        List<PropertyDefinition> properties)
+    {
+        Namespace = SourceGenerationHelper.GetNamespace(syntax);
+        Name = syntax.Identifier.ToString();
+        Syntax = syntax;
+        Functions = functions;
+        Properties = properties;
+
+        PropertyLookup = SourceGenerationHelper.GenerateLookups(false, this, "str", static (sb, indentStr, item) =>
+        {
+            sb.Append(indentStr);
+            sb.AppendLine("        {");
+            sb.Append(indentStr);
+            sb.Append("            ").Append("match").Append(" = ");
+            sb.Append(item.Accessor);
+            sb.AppendLine(";");
+        }, "_property", 12);
+
+        PropertySet = SourceGenerationHelper.GenerateLookups(false, this, "str", static (sb, indentStr, item) =>
+        {
+            sb.Append(indentStr);
+            sb.AppendLine("        {");
+            sb.Append(indentStr);
+            sb.Append("            ").Append("match").Append(" = ");
+            sb.Append(item.Accessor);
+            sb.AppendLine(";");
+        }, "_property", 12);
+
+        ValueLookup = SourceGenerationHelper.GenerateLookups(true, this, "str", static (sb, indentStr, item) =>
+        {
+            sb.Append(indentStr);
+            sb.AppendLine("        {");
+            sb.Append(indentStr);
+            sb.Append("            ").Append(item.Accessor).Append("_backingField").Append(" = ");
+            sb.Append("value");
+            sb.AppendLine(";");
+        }, "", 12);
+    }
+
+    public string Namespace { get; }
+
+    public string Name { get; }
+    public ClassDeclarationSyntax Syntax { get; }
+
+    public List<FunctionDefinition> Functions { get; }
+    public List<PropertyDefinition> Properties { get; }
+    public string PropertyLookup { get; }
+    public string PropertySet { get; }
+    public string ValueLookup { get; }
+
+}