Make MEN017 check for setter expression body

Fix #12

Author: menees

src/Directory.Build.props

@@ -21,7 +21,7 @@
 		<AssemblyOriginatorKeyFile>../Analyzers.snk</AssemblyOriginatorKeyFile>
 
 		<!-- NOTE: Change the version in Vsix\source.extension.vsixmanifest to match this! -->
-		<Version>3.1.0</Version>
+		<Version>3.1.1</Version>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)'=='Debug'">

src/Menees.Analyzers.Vsix/source.extension.vsixmanifest

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
     <Metadata>
-        <Identity Id="Menees.Analyzers.Vsix" Version="3.1.0" Language="en-US" Publisher="Bill Menees"/>
+        <Identity Id="Menees.Analyzers.Vsix" Version="3.1.1" Language="en-US" Publisher="Bill Menees"/>
         <DisplayName>Menees.Analyzers.Vsix</DisplayName>
         <Description xml:space="preserve">Provides analyzers for validating that tabs are used for indentation, that the lengths of lines, methods, properties, and files are acceptable, and that #regions are used within long files and files that contain multiple types.</Description>
         <License>License.txt</License>

src/Menees.Analyzers/Men017RemoveUnusedPrivateSetter.cs

@@ -78,7 +78,8 @@ private static void HandleSetter(SyntaxNodeAnalysisContext context)
 				&& propertyDeclarationSymbol.ExplicitInterfaceImplementations.IsDefaultOrEmpty // Can't change interfaces
 				&& propertyDeclarationSymbol.SetMethod is IMethodSymbol setMethod
 				&& setMethod.DeclaredAccessibility == Accessibility.Private
-				&& accessorDeclaration.Body is null // Auto-property accessors have no body.
+				&& accessorDeclaration.Body is null // Auto-property accessors have no block body.
+				&& accessorDeclaration.ExpressionBody is null // Auto-property accessors have no expression body either.
 				&& propertyDeclarationSymbol.GetAttributes().Length == 0 /* See Reflection note above*/)
 			{
 				bool canRemove = true;

tests/Menees.Analyzers.Test/Men017UnitTests.cs

@@ -330,6 +330,35 @@ public C(bool f)
 		this.VerifyCSharpDiagnostic(Code);
 	}
 
+	[TestMethod]
+	public void PrimaryConstructorWithCustomSetter()
+	{
+		// https://github.com/menees/Analyzers/issues/12
+		const string Code = """
+			public sealed class MyClass
+			{
+			    private readonly Dictionary<string, object?> myMap = new();
+
+			    public MyClass(string myString) => this.MyString = myString;
+
+			    public string MyString
+			    {
+			        get => this.Read<string>()!;
+			        private set => this.Write(value);
+			    }
+
+			    [return: MaybeNull]
+			    private TValue Read<TValue>([CallerMemberName] string propertyName = "") =>
+			        this.myMap.TryGetValue(propertyName, out var value) ? (TValue)value! : default;
+
+			    private void Write<TValue>([AllowNull] TValue value, [CallerMemberName] string propertyName = "") =>
+			        this.myMap[propertyName] = value;
+			}
+			""";
+
+		this.VerifyCSharpDiagnostic(Code);
+	}
+
 	#endregion
 
 	#region Invalid Code Tests