AutoCtor 0.8.0

AutoCtor

AutoCtor is a Roslyn Source Generator that will automatically create a constructor for your class for use with constructor Dependency Injection.

NuGet packages

https://nuget.org/packages/AutoCtor/

Usage

Your code

[AutoConstruct]
public partial class ExampleClass
{
    private readonly ICustomService _customService;
}

What gets generated

partial class ExampleClass
{
    public ExampleClass(ICustomService customService)
    {
        _customService = customService;
    }
}

Embedding the attributes in your project

By default, the [AutoConstruct] attributes referenced in your project are contained in an external dll. It is also possible to embed the attributes directly in your project. To do this, you must do two things:

1. Define the MSBuild constant AUTOCTOR_EMBED_ATTRIBUTES. This ensures the attributes are embedded in your project.
2. Add compile to the list of excluded assets in your <PackageReference> element. This ensures the attributes in your project are referenced, insted of the AutoCtor.Attributes.dll library.

Your project file should look like this:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    
    <DefineConstants>AUTOCTOR_EMBED_ATTRIBUTES</DefineConstants>
  </PropertyGroup>

  
  <PackageReference Include="AutoCtor"
                    PrivateAssets="all"
                    ExcludeAssets="compile;runtime" />


</Project>

Preserving usage of the [AutoConstruct] attribute

The [AutoConstruct] attributes are decorated with the [Conditional] attribute, so their usage will not appear in the build output of your project. If you use reflection at runtime you will not find the [AutoConstruct] attributes.

If you wish to preserve these attributes in the build output, you can define the AUTOCTOR_USAGES MSBuild variable.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    
    <DefineConstants>AUTOCTOR_USAGES</DefineConstants>
  </PropertyGroup>

  
  <PackageReference Include="AutoCtor" PrivateAssets="all" />

</Project>