Add support for inheritance

Cloneable.Sample/ClassWithInheritance.cs

@@ -0,0 +1,8 @@
+namespace Cloneable.Sample
+{
+    [Cloneable]
+    public partial class ClassWithInheritance : InheritedClass
+    {
+        public double C { get; set; }
+    }
+}

Cloneable.Sample/Cloneable.Sample.csproj

@@ -7,7 +7,9 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\Cloneable\Cloneable.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+        <ProjectReference Include="..\Cloneable\Cloneable.csproj" 
+                          OutputItemType="Analyzer" 
+                          ReferenceOutputAssembly="false" />
     </ItemGroup>
 
 </Project>

Cloneable.Sample/InheritedClass.cs

@@ -0,0 +1,10 @@
+namespace Cloneable.Sample
+{
+    [Cloneable]
+    public partial class InheritedClass
+    {
+        public double A { get; set; }
+
+        public double B { get; set; }
+    }
+}

Cloneable.Sample/Program.cs

@@ -11,6 +11,7 @@ static void Main(string[] args)
             DoSimpleExplicitClone();
             DoDeepClone();
             DoSafeDeepClone();
+            DoBaseClassClone();
         }
 
         static void DoSimpleClone()
@@ -79,5 +80,17 @@ static void DoSafeDeepClone()
             Console.WriteLine("Is parents child copied: " + (clone.Child != parent.Child));
             Console.WriteLine();
         }
+
+        static void DoBaseClassClone()
+        {
+            var classWithInheritance = new ClassWithInheritance();
+
+            classWithInheritance.A = 2;
+
+            var clone = classWithInheritance.Clone();
+
+            Console.WriteLine(clone);
+            Console.WriteLine($"Clone A of Inherited Class:{clone.A}");
+        }
     }
 }

Cloneable/Cloneable.csproj

@@ -4,6 +4,7 @@
     		<Description>Auto-generator of Clone method using C# Source Generator</Description>
 		<TargetFramework>netstandard2.0</TargetFramework>
 		<LangVersion>latest</LangVersion>
+    <IsRoslynComponent>true</IsRoslynComponent>
 		<Nullable>enable</Nullable>
 		<IncludeBuildOutput>false</IncludeBuildOutput>
 		<RepositoryUrl>https://github.com/mostmand/Cloneable</RepositoryUrl>
@@ -15,7 +16,8 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.8.0" PrivateAssets="all" />
-		<PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.0" PrivateAssets="all" />
+		<PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.11.0" PrivateAssets="all" />
+		<PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.2" PrivateAssets="all" />
+		<PackageReference Include="System.CodeDom" Version="5.0.0" />
 	</ItemGroup>
 </Project>

Cloneable/CloneableGenerator.cs

@@ -222,6 +222,16 @@ private IEnumerable<IPropertySymbol> GetCloneableProperties(ITypeSymbol classSym
             var targetSymbolMembers = classSymbol.GetMembers().OfType<IPropertySymbol>()
                 .Where(x => x.SetMethod is not null &&
                             x.CanBeReferencedByName);
+
+            var baseTargetSymbolMembers = classSymbol.BaseType?.GetMembers().OfType<IPropertySymbol>()
+                .Where(x => x.SetMethod is not null &&
+                            x.CanBeReferencedByName);
+
+            if (baseTargetSymbolMembers != null)
+            {
+                targetSymbolMembers = targetSymbolMembers.Concat(baseTargetSymbolMembers);
+            }
+
             if (isExplicit)
             {
                 return targetSymbolMembers.Where(x => x.HasAttribute(cloneAttribute!));