Catel.SourceGenerators

Experimental source generators for Catel.

Note for debugging

If the source generator is generating errors, add this to the csproj:

  <PropertyGroup>
    <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
    <CompilerGeneratedFilesOutputPath>Generated</CompilerGeneratedFilesOutputPath>
  </PropertyGroup>

  <ItemGroup>
    <Compile Remove="$(CompilerGeneratedFilesOutputPath)/**/*.cs" />
  </ItemGroup>
  

Run the build one more time, then disable the source generator and comment the compile remove line. Then the code can be checked inside Visual Studio.

Xaml Constructors

Xaml requires empty constructors, so they must be provided. But as developers, we want dependency injection (DI). The DI is "required" for the IViewModelLocator, etc.

The developers can write the constructors they want (with dependency injection). Then the source generator will handle the generation of the empty constructors.

Code written by developer:

public MyUserControl(ILogger<MyUserControl> logger, IUserControlWrapperService userControlWrapperService)
  : base(logger, userControlWrapperService)
{
    InitializeComponent();
}

Final result:

[CompilerGenerated]
public MyUserControl()
  : this(IoCContainer.ServiceProvider.GetRequiredService<ILogger<MyUserControl>>(), IoCContainer.ServiceProvider.GetRequiredService<IUserControlWrapperService>())
{
}


public MyUserControl(ILogger<MyUserControl> logger, IUserControlWrapperService userControlWrapperService)
  : base(logger, userControlWrapperService)
{
    InitializeComponent();
}