AK1000: added failing test case for IIndirectActorProducer.Produce (#…

…31)

* AK1000: added failing test case for `IIndirectActorProducer.Produce`

* resolved `IIndirectActorProducer` checks on AK1000

src/Akka.Analyzers.Tests/Analyzers/AK1000/MustNotUseNewKeywordOnActorsAnalyzerSpecs.cs

@@ -167,6 +167,43 @@ class Test
                 return Method(() => new MyActor("foo", 1));
             }
         }
+        """,
+
+        // IIndirectActorProducer - won't often be found in user code, but should be supported
+        """
+        using Akka.Actor;
+        using System;
+
+        public class TestProducer : IIndirectActorProducer
+        {
+            public TestProducer()
+            {
+            }
+
+            public ActorBase Produce()
+            {
+                return new PropsTestActor();
+            }
+
+            public Type ActorType
+            {
+                get { return typeof(PropsTestActor); }
+            }
+
+
+            public void Release(ActorBase actor)
+            {
+                actor = null;
+            }
+        }
+
+        public class PropsTestActor : ActorBase
+        {
+            protected override bool Receive(object message)
+            {
+                return true;
+            }
+        }
         """
     };
 

src/Akka.Analyzers/AK1000/MustNotUseNewKeywordOnActorsAnalyzer.cs

@@ -31,14 +31,32 @@ public override void AnalyzeCompilation(CompilationStartAnalysisContext context,
                 return;
 
             // Check if it's within the context of Props.Create
-            if (IsInsidePropsCreate(objectCreation, ctx.SemanticModel, akkaContext))
+            if (IsInsidePropsCreate(objectCreation, ctx.SemanticModel, akkaContext) || IsWithinIndirectActorProducerProduce(objectCreation, ctx.SemanticModel, akkaContext))
                 return;
 
             var diagnostic = Diagnostic.Create(RuleDescriptors.Ak1000DoNotNewActors, objectCreation.GetLocation(),
                 typeSymbol.Name);
             ctx.ReportDiagnostic(diagnostic);
         }, SyntaxKind.ObjectCreationExpression);
     }
+
+    private static bool IsWithinIndirectActorProducerProduce(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel, AkkaContext akkaContext)
+    {
+        var enclosingMethod = objectCreation.Ancestors().OfType<MethodDeclarationSyntax>().FirstOrDefault();
+        if (enclosingMethod == null)
+            return false;
+
+        if (semanticModel.GetDeclaredSymbol(enclosingMethod) is not { Name: "Produce" } methodSymbol)
+            return false;
+
+        var containingType = methodSymbol.ContainingType;
+        if (containingType == null)
+            return false;
+
+        // Check if the containing type implements IIndirectActorProducer
+        return containingType.AllInterfaces.Any(i => SymbolEqualityComparer.Default.Equals(i, akkaContext.AkkaCore.IndirectActorProducerType));
+    }
+
 
     private static bool IsInsidePropsCreate(ObjectCreationExpressionSyntax objectCreation, SemanticModel semanticModel, AkkaContext akkaContext)
     {

src/Akka.Analyzers/Utility/AkkaCoreContext.cs

@@ -21,6 +21,10 @@ public interface IAkkaCoreContext
     public INamedTypeSymbol? ActorBaseType { get; }
     public INamedTypeSymbol? ActorRefType { get; }
     public INamedTypeSymbol? PropsType { get; }
+
+    public INamedTypeSymbol? ActorContextType { get; }
+
+    public INamedTypeSymbol? IndirectActorProducerType { get; }
 }
 
 /// <summary>
@@ -38,6 +42,10 @@ private EmptyCoreContext()
     public INamedTypeSymbol? ActorBaseType => null;
     public INamedTypeSymbol? ActorRefType => null;
     public INamedTypeSymbol? PropsType => null;
+
+    public INamedTypeSymbol? ActorContextType => null;
+
+    public INamedTypeSymbol? IndirectActorProducerType => null;
 }
 
 /// <summary>
@@ -52,13 +60,17 @@ public class AkkaCoreContext : IAkkaCoreContext
     private readonly Lazy<INamedTypeSymbol?> _lazyActorBaseType;
     private readonly Lazy<INamedTypeSymbol?> _lazyActorRefType;
     private readonly Lazy<INamedTypeSymbol?> _lazyPropsType;
+    private readonly Lazy<INamedTypeSymbol?> _lazyActorContextType;
+    private readonly Lazy<INamedTypeSymbol?> _lazyIIndirectActorProducerType;
 
     private AkkaCoreContext(Compilation compilation, Version version)
     {
         Version = version;
         _lazyActorBaseType = new Lazy<INamedTypeSymbol?>(() => TypeSymbolFactory.ActorBase(compilation));
         _lazyActorRefType = new Lazy<INamedTypeSymbol?>(() => TypeSymbolFactory.ActorReference(compilation));
         _lazyPropsType = new Lazy<INamedTypeSymbol?>(() => TypeSymbolFactory.Props(compilation));
+        _lazyActorContextType = new Lazy<INamedTypeSymbol?>(() => TypeSymbolFactory.ActorContext(compilation));
+        _lazyIIndirectActorProducerType = new Lazy<INamedTypeSymbol?>(() => TypeSymbolFactory.IndirectActorProducer(compilation));
     }
 
     /// <inheritdoc />
@@ -67,6 +79,10 @@ private AkkaCoreContext(Compilation compilation, Version version)
     public INamedTypeSymbol? ActorBaseType => _lazyActorBaseType.Value;
     public INamedTypeSymbol? ActorRefType => _lazyActorRefType.Value;
     public INamedTypeSymbol? PropsType => _lazyPropsType.Value;
+
+    public INamedTypeSymbol? ActorContextType => _lazyActorContextType.Value;
+
+    public INamedTypeSymbol? IndirectActorProducerType => _lazyIIndirectActorProducerType.Value;
 
     public static AkkaCoreContext? Get(
         Compilation compilation,

src/Akka.Analyzers/Utility/TypeSymbolFactory.cs

@@ -27,4 +27,16 @@ public static class TypeSymbolFactory
         return Guard.AssertIsNotNull(compilation)
             .GetTypeByMetadataName("Akka.Actor.Props");
     }
+
+    public static INamedTypeSymbol? ActorContext(Compilation compilation)
+    {
+        return Guard.AssertIsNotNull(compilation)
+            .GetTypeByMetadataName("Akka.Actor.IActorContext");
+    }
+
+    public static INamedTypeSymbol? IndirectActorProducer(Compilation compilation)
+    {
+        return Guard.AssertIsNotNull(compilation)
+            .GetTypeByMetadataName("Akka.Actor.IIndirectActorProducer");
+    }
 }