Chain Generator

The Chain generator emits deterministic responsibility-chain dispatch for partial chain hosts.

Usage

using PatternKit.Generators.Chain;

[Chain]
public partial class Router
{
    [ChainHandler(Order = 0)]
    private bool TryHealth(in Request request, out Response response)
    {
        response = new Response(200);
        return request.Path == "/health";
    }

    [ChainDefault]
    private Response NotFound(in Request request) => new(404);
}

The generated TryHandle method invokes handlers by ascending Order and stops at the first handler that returns true. The generated Handle method returns that value or calls the [ChainDefault] fallback.

Diagnostics

• PKCH001: chain host must be partial.
• PKCH002: no handlers found.
• PKCH003: duplicate handler order.
• PKCH004: handler signature invalid.
• PKCH005: pipeline terminal missing.
• PKCH006: multiple pipeline terminals.
• PKCH007: default fallback missing.