OutWit.Common.Proxy.Generator

OutWit.Common.Proxy.Generator is a source generator that automatically creates proxy classes for interfaces marked with the ProxyTargetAttribute from the OutWit.Common.Proxy library.

Features

• Automatically generates proxies for interfaces with events, methods, and properties.
• Integrates seamlessly with custom IProxyInterceptor implementations.

Getting Started

Installation

Add OutWit.Common.Proxy.Generator to your project via NuGet:

dotnet add package OutWit.Common.Proxy.Generator

Usage

1. Ensure your interface is marked with the ProxyTargetAttribute:

   using OutWit.Common.Proxy;
   
   [ProxyTarget]
   public interface IExampleService
   {
       string GetData(int id);
       event EventHandler DataChanged;
   }
   

2. Implement IProxyInterceptor to handle invocations:

   public class ExampleInterceptor : IProxyInterceptor
   {
       public void Intercept(IProxyInvocation invocation)
       {
           Console.WriteLine($"Intercepted method: {invocation.MethodName}");
           if (invocation.MethodName == "GetData")
           {
               invocation.ReturnValue = $"Data for ID {invocation.Parameters[0]}";
           }
       }
   }
   

3. Use the generated proxy in your code:

   var interceptor = new ExampleInterceptor();
   var proxy = new ExampleServiceProxy(interceptor);
   
   var result = proxy.GetData(42);
   Console.WriteLine(result); // Output: Data for ID 42
   

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Support for Methods, Properties, and Events

Methods

When a method is called, a ProxyInvocation object is created and passed to the Intercept method. The return value of the method is taken from invocation.ReturnValue.

Properties

OutWit.Common.Proxy.Generator supports both getters and setters for properties. Each invocation is wrapped in a ProxyInvocation object, similar to methods.

Events

The generator handles subscription (add) and unsubscription (remove) for events, passing the relevant details to the Intercept method.

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License

Licensed under the Apache License, Version 2.0. See LICENSE.