🧭 Analyzer Diagnostics (GenDI.Analyzers)

GenDI ships analyzer diagnostics to guide attribute usage and migration paths.

GenDI.SourceGenerator bundles GenDI.Analyzers in analyzers/dotnet/cs, so these diagnostics are available automatically when the source-generator package is installed.

📋 Official diagnostic list

Code	Severity	Purpose
GENDI001	Warning	[Inject] property must be init-only
GENDI002	Warning	[Injectable] must target a concrete class
GENDI003	Info	Constructor injection can be converted to GenDI property injection
GENDI004	Error	Non-generic [DecoratorFor] must resolve exactly one closed [ServiceInjection] contract
GENDI005	Error	Decorators must expose the decorated contract as a constructor parameter or [Inject] property

For the canonical details (message, trigger, fix), see:

• Analyzer diagnostics index (repository docs)

🔗 IDE help links

Each diagnostic now exposes HelpLinkUri, so IDEs can open the documentation page directly from the analyzer warning/info entry.

🛠️ Practical GENDI003 code-fix example

Before:

[Injectable]
public sealed class CheckoutService
{
    private readonly IPaymentGateway _gateway;

    public CheckoutService(IPaymentGateway gateway)
    {
        _gateway = gateway;
    }
}

After code-fix:

[Injectable]
public sealed class CheckoutService
{
    [Inject]
    public required IPaymentGateway Gateway { get; init; }
}