feat!: leave [ObservableAsProperty] and view registration to ReactiveUI.Binding, and generate through an indentation-aware writer

.editorconfig

@@ -7,6 +7,8 @@ root = true
 # Default settings
 #############################################
 [*]
+# Every file is UTF-8 without a byte order mark, with LF line endings, on every platform. XAML included.
+charset = utf-8
 end_of_line = lf
 insert_final_newline = true
 indent_style = space
@@ -1429,6 +1431,7 @@ dotnet_diagnostic.SST1522.severity = error # A file has more code lines than the
 dotnet_diagnostic.SST1523.severity = error # A member has more code lines than the configured maximum (default 60)
 dotnet_diagnostic.SST1524.severity = error # A switch section has more code lines than the configured maximum (default 20)
 dotnet_diagnostic.SST1525.severity = error # A multi-statement `switch` section has no braces; the braces-on policy extends to switch sections. Code fix wraps it.
+dotnet_diagnostic.SST1534.severity = none # Switch braces that scope nothing — conflicts with SST1525's braces-on policy
 dotnet_diagnostic.SST1526.severity = error # A wrapped binary expression places the operator inconsistently. Configurable (`before`/`after`, default before). Opt-in.
 dotnet_diagnostic.SST1527.severity = error # The `=>` of an expression-bodied member wraps inconsistently. Configurable. Opt-in.
 dotnet_diagnostic.SST1528.severity = error # The `=` of a wrapped initializer wraps inconsistently. Configurable. Opt-in.
@@ -2827,9 +2830,6 @@ indent_size = 2
 [*.sh]
 end_of_line = lf
 
-[*.{cmd, bat}]
-end_of_line = crlf
-
 #############################################
 # Test projects (TUnit)
 #############################################

.gitattributes

@@ -1 +1,13 @@
-*.cs text eol=lf
+# Text files are stored and checked out with LF line endings on every platform.
+# Files are UTF-8 without a byte order mark; .editorconfig sets that for editors.
+* text=auto eol=lf
+
+# Binary files are never normalised.
+*.png binary
+*.jpg binary
+*.ico binary
+*.snk binary
+*.dll binary
+*.exe binary
+*.nupkg binary
+*.nettrace binary

.gitignore

@@ -348,3 +348,10 @@ MigrationBackup/
 
 # Ionide (cross platform F# VS Code tools) working folder
 .ionide/
+
+# Claude Code local workspace
+.claude/
+
+# BenchmarkDotNet
+**/.bdn/
+**/BenchmarkDotNet.Artifacts/

AGENTS.md

@@ -0,0 +1,5 @@
+# AGENTS.md
+
+Compatibility entrypoint only.
+
+Follow [CLAUDE.md](./CLAUDE.md) in this repository as the authoritative instruction file.

src/Directory.Packages.props

@@ -3,42 +3,41 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
     <CodeAnalysisVersion>4.14.0</CodeAnalysisVersion>
-    <RoslynCommonAnalyzersVersion>3.40.2</RoslynCommonAnalyzersVersion>
+    <RoslynCommonAnalyzersVersion>5.1.2</RoslynCommonAnalyzersVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="10.0.401" />
     <PackageVersion Include="MinVer" Version="8.0.0" />
-    <PackageVersion Include="StyleSharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)"/>
-    <PackageVersion Include="PerformanceSharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)"/>
-    <PackageVersion Include="SecuritySharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)"/>
+    <PackageVersion Include="StyleSharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)" />
+    <PackageVersion Include="PerformanceSharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)" />
+    <PackageVersion Include="SecuritySharp.Analyzers" Version="$(RoslynCommonAnalyzersVersion)" />
     <PackageVersion Include="Roslynator.Analyzers" Version="5.0.0" />
     <PackageVersion Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
     <PackageVersion Include="Microsoft.Maui.Controls.Compatibility" Version="$(MauiVersion)" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.3.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.9.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(CodeAnalysisVersion)" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="$(CodeAnalysisVersion)" />
-    <PackageVersion Include="PolySharp" Version="1.16.0" />
-    <PackageVersion Include="Avalonia" Version="12.1.2" />
-    <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.1.2" />
-    <PackageVersion Include="Avalonia.Fonts.Inter" Version="12.1.2" />
+    <PackageVersion Include="Avalonia" Version="12.1.3" />
+    <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.1.3" />
+    <PackageVersion Include="Avalonia.Fonts.Inter" Version="12.1.3" />
     <PackageVersion Include="ReactiveUI.Avalonia" Version="12.1.2" />
     <PackageVersion Include="Avalonia.Diagnostics" Version="11.3.22" />
-    <PackageVersion Include="Avalonia.Desktop" Version="12.1.2" />
+    <PackageVersion Include="Avalonia.Desktop" Version="12.1.3" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Debug" Version="10.0.12" />
     <PackageVersion Include="DynamicData" Version="9.4.33" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
     <PackageVersion Include="System.Formats.Asn1" Version="10.0.12" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.4" />
     <PackageVersion Include="Splat" Version="21.0.0" />
-    <PackageVersion Include="ReactiveUI" Version="24.2.0" />
-    <PackageVersion Include="ReactiveUI.Reactive" Version="24.2.0" />
-    <PackageVersion Include="ReactiveUI.Maui" Version="24.2.0" />
+    <PackageVersion Include="ReactiveUI" Version="24.3.0" />
+    <PackageVersion Include="ReactiveUI.Reactive" Version="24.3.0" />
+    <PackageVersion Include="ReactiveUI.Maui" Version="24.3.0" />
     <PackageVersion Include="System.Reactive" Version="7.0.0" />
-    <PackageVersion Include="TUnit" Version="1.61.38" />
-    <PackageVersion Include="Verify.TUnit" Version="31.20.0" />
-    <PackageVersion Include="Verify.SourceGenerators" Version="2.5.0" />
+    <PackageVersion Include="TUnit" Version="1.69.16" />
+    <PackageVersion Include="BenchmarkDotNet" Version="0.16.0-preview.2" />
+    <PackageVersion Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.2.6" />
   </ItemGroup>
 </Project>

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/BindableDerivedListGeneratorTests.FromReactiveProperties#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/BDLG.FRxProps#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/BindableDerivedListGeneratorTests.FromReactiveProperties#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/BDLG.FRxProps#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_test1"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.DiffNamespaces#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.AccMods#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.AccessModifiers#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.AccMods#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_publicItems"/>

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.DateTimeType#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.CplxGen#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.ComplexGeneric#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.CplxGen#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_items"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.EnumType#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.DateTimeT#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.DateTimeType#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.DateTimeT#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_dates"/>
@@ -21,4 +20,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.GenericClass#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.DiffNss#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.DiffNamespaces#Namespace1.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.DiffNss#Ns1.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: Namespace1.TestVM.BindableDerivedList.g.cs
+//HintName: Namespace1.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace Namespace1
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_numbers"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.DiffNamespaces#Namespace2.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.DiffNss#Ns2.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: Namespace2.TestVM.BindableDerivedList.g.cs
+//HintName: Namespace2.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace Namespace2
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_names"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.ComplexGeneric#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.EnumT#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.EnumType#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.EnumT#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_statuses"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.AccessModifiers#ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.GenClass#BdlAttr.verified.cs

@@ -1,4 +1,4 @@
-//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
 // Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.GenericClass#TestNs.GenericVM`1.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.GenClass#TestNs.GenVM`1.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.GenericVM`1.BindableDerivedList.g.cs
+//HintName: TestNs.GenericVM`1.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class GenericVM<T>
     {
         /// <inheritdoc cref="_items"/>
@@ -18,4 +17,4 @@ public partial class GenericVM<T>
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.GuidT#BdlAttr.verified.cs

@@ -0,0 +1,28 @@
+//HintName: ReactiveUI.SourceGenerators.BindableDerivedListAttribute.g.cs
+// Copyright (c) 2026 .NET Foundation and Contributors. All rights reserved.
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for full license information.
+
+// <auto-generated/>
+#pragma warning disable
+#nullable enable
+namespace ReactiveUI.SourceGenerators;
+
+/// <summary>
+/// ReactiveAttribute.
+/// </summary>
+/// <seealso cref="Attribute" />
+[global::System.AttributeUsage(global::System.AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
+internal sealed class BindableDerivedListAttribute : global::System.Attribute
+{
+    /// <summary>
+    /// Gets the AccessModifier of the BindableDerivedList property.
+    /// </summary>
+    /// <value>
+    /// The AccessModifier of the property.
+    /// </value>
+    public PropertyAccessModifier AccessModifier { get; init; }
+}
+#nullable restore
+#pragma warning restore

src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DerivedListExtTests.GuidType#TestNs.TestVM.BindableDerivedList.g.verified.cs → src/ReactiveUI.SourceGenerator.Tests/DERIVEDLIST/DLE.GuidT#TestNs.TestVM.Bdl.verified.cs

@@ -1,4 +1,4 @@
-//HintName: TestNs.TestVM.BindableDerivedList.g.cs
+//HintName: TestNs.TestVM.BindableDerivedList.g.cs
 // <auto-generated/>
 using System.Collections.ObjectModel;
 using DynamicData;
@@ -9,7 +9,6 @@
 
 namespace TestNs
 {
-
     public partial class TestVM
     {
         /// <inheritdoc cref="_ids"/>
@@ -18,4 +17,4 @@ public partial class TestVM
     }
 }
 #nullable restore
-#pragma warning restore
+#pragma warning restore