Manualfac

Proof-of-concept DI container based on source generators.

Features:

• Specify dependencies and their access modifiers with generic attributes:

  [Component, DependsOn<PrivateProtected, Class1, Class2, Class3, Class4>]
  public partial class Class5
  {
  }

  Source generator will generate constructor and fields for dependencies.

• Register components as selected interface:

  [Component, As<IClass11>]
  public partial class Class1 : IClass1, IClass11
  {
  }

• Override components in dependant projects:

  [Component, Overrides<Class2>]
  public partial class Class3 : Class2
  {
  }

• Query several dependencies implementing same interface:

  [Component, DependsOn<Internal, IEnumerable<IClass1>>()]
  public partial class Class3
  {
  }

• Specify ordering of dependencies with Before and After attributes:

  [Component, Before<Class6, Class7>, After<Class8>]
  public partial class Class5
  {
  }

• Specify end-projects for which the resolver will be generated:

  [assembly: GenerateResolver]  

  TestConsoleAppInitializer.Initialize();
  TestConsoleAppResolver.ResolveOrThrow<Class1>()

• Specify naming rules with Directory.Build.props

  <Project>
    <ItemGroup>
      <CompilerVisibleProperty Include="ManualfacDependencySuffix" />
      <CompilerVisibleProperty Include="ManualfacDependencyPrefix" />
    </ItemGroup>
  
    <PropertyGroup>
      <ManualfacDependencySuffix>suffix</ManualfacDependencySuffix>
      <ManualfacDependencyPrefix>prefix</ManualfacDependencyPrefix>
    </PropertyGroup>
  </Project>
  

Todos:

• Different lifetimes of components?
• Integration with other containers, like ASP NET Core default one, autofac...
• Test it against nuget packages
• Feature flags? Zones?
• More configurable naming