Add: Lua.SourceGenerator

Lua.sln

@@ -17,6 +17,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp1", "sandbox\Cons
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Benchmark", "sandbox\Benchmark\Benchmark.csproj", "{FC157C29-8AAE-49C8-9536-208E3F0698DA}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lua.SourceGenerator", "src\Lua.SourceGenerator\Lua.SourceGenerator.csproj", "{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -42,11 +44,16 @@ Global
 		{FC157C29-8AAE-49C8-9536-208E3F0698DA}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{FC157C29-8AAE-49C8-9536-208E3F0698DA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{FC157C29-8AAE-49C8-9536-208E3F0698DA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{6E33BFBC-E51F-493E-9AF0-30C1100F5B5D} = {18A64E25-9557-457B-80AE-A6EFE853118D}
 		{7572B7BC-FC73-42F0-B4F7-DA291B4EDB36} = {79458370-DD8A-48A4-B11E-8DF631520E8C}
 		{718A361C-AAF3-45A4-84D4-8C4FB6BB374E} = {33883F28-679F-48AD-8E64-3515C7BDAF5A}
 		{FC157C29-8AAE-49C8-9536-208E3F0698DA} = {33883F28-679F-48AD-8E64-3515C7BDAF5A}
+		{C4BB264C-4D37-4E2D-99FD-4918CE22D7E4} = {18A64E25-9557-457B-80AE-A6EFE853118D}
 	EndGlobalSection
 EndGlobal

sandbox/ConsoleApp1/ConsoleApp1.csproj

@@ -2,13 +2,20 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\Lua\Lua.csproj" />
+    <ProjectReference Include="..\..\src\Lua.SourceGenerator\Lua.SourceGenerator.csproj">
+			<OutputItemType>Analyzer</OutputItemType>
+			<ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+		</ProjectReference>
   </ItemGroup>
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+
+    <EmitCompilerGeneratedFiles>false</EmitCompilerGeneratedFiles>
+    <CompilerGeneratedFilesOutputPath>Generated</CompilerGeneratedFilesOutputPath>
   </PropertyGroup>
 
 </Project>

sandbox/ConsoleApp1/LVec3.cs

@@ -0,0 +1,43 @@
+using System.Numerics;
+using Lua;
+
+[LuaObject]
+public partial class LVec3
+{
+    Vector3 value;
+
+    [LuaMember("x")]
+    public float X
+    {
+        get => value.X;
+        set => this.value = this.value with { X = value };
+    }
+
+    [LuaMember("y")]
+    public float Y
+    {
+        get => value.Y;
+        set => this.value = this.value with { Y = value };
+    }
+
+    [LuaMember("z")]
+    public float Z
+    {
+        get => value.Z;
+        set => this.value = this.value with { Z = value };
+    }
+
+    [LuaMember("create")]
+    public static LVec3 Create(float x, float y, float z)
+    {
+        return new LVec3()
+        {
+            value = new Vector3(x, y, z)
+        };
+    }
+
+    public override string ToString()
+    {
+        return value.ToString();
+    }
+}

sandbox/ConsoleApp1/Program.cs

@@ -7,6 +7,8 @@
 var state = LuaState.Create();
 state.OpenStandardLibraries();
 
+state.Environment["vec3"] = new LVec3();
+
 try
 {
     var source = File.ReadAllText("test.lua");

src/Lua.SourceGenerator/Comparer.cs

@@ -0,0 +1,18 @@
+using Microsoft.CodeAnalysis;
+
+namespace Lua.SourceGenerator;
+
+internal sealed class Comparer : IEqualityComparer<(GeneratorAttributeSyntaxContext, Compilation)>
+{
+    public static readonly Comparer Instance = new();
+
+    public bool Equals((GeneratorAttributeSyntaxContext, Compilation) x, (GeneratorAttributeSyntaxContext, Compilation) y)
+    {
+        return x.Item1.TargetNode.Equals(y.Item1.TargetNode);
+    }
+
+    public int GetHashCode((GeneratorAttributeSyntaxContext, Compilation) obj)
+    {
+        return obj.Item1.TargetNode.GetHashCode();
+    }
+}

src/Lua.SourceGenerator/DiagnosticDescriptors.cs

@@ -0,0 +1,64 @@
+using Microsoft.CodeAnalysis;
+
+namespace Lua.SourceGenerator;
+
+public static class DiagnosticDescriptors
+{
+    const string Category = "Lua";
+
+    public static readonly DiagnosticDescriptor MustBePartial = new(
+        id: "LUACS001",
+        title: "LuaObject type must be partial.",
+        category: Category,
+        messageFormat: "LuaObject type '{0}' must be partial",
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor NestedNotAllowed = new(
+        id: "LUACS002",
+        title: "LuaObject type must not be nested",
+        messageFormat: "LuaObject type '{0}' must be not nested",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor AbstractNotAllowed = new(
+        id: "LUACS003",
+        title: "LuaObject type must not abstract",
+        messageFormat: "LuaObject object '{0}' must be not abstract",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor InvalidPropertyType = new(
+        id: "LUACS004",
+        title: "The type of the field or property must be LuaValue or a type that can be converted to LuaValue.",
+        messageFormat: "The type of '{0}' must be LuaValue or a type that can be converted to LuaValue.",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor InvalidReturnType = new(
+        id: "LUACS005",
+        title: "The return type must be LuaValue or types that can be converted to LuaValue.",
+        messageFormat: "The return type '{0}' must be LuaValue or types that can be converted to LuaValue.",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor InvalidParameterType = new(
+        id: "LUACS006",
+        title: "The parameters must be LuaValue or types that can be converted to LuaValue.",
+        messageFormat: "The parameter '{0}' must be LuaValue or types that can be converted to LuaValue.",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+
+    public static readonly DiagnosticDescriptor DuplicateMetamethod = new(
+        id: "LUACS007",
+        title: "The type already contains same metamethod.",
+        messageFormat: "Type '{0}' already contains a '{1}' metamethod.,",
+        category: Category,
+        defaultSeverity: DiagnosticSeverity.Error,
+        isEnabledByDefault: true);
+}

src/Lua.SourceGenerator/Lua.SourceGenerator.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <LangVersion>12</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsRoslynComponent>true</IsRoslynComponent>
+    <AnalyzerLanguage>cs</AnalyzerLanguage>
+    <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+    <DevelopmentDependency>true</DevelopmentDependency>
+    <IncludeSymbols>false</IncludeSymbols>
+    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.0" />
+
+	  <None Include="$(OutputPath)\$(AssemblyName).dll" Pack="true" PackagePath="analyzers/dotnet/cs" Visible="false" />
+  </ItemGroup>
+
+</Project>