Update IViewFor Generator for Performance

src/ReactiveUI.SourceGenerators.sln

@@ -1,5 +1,5 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
+# 17
 VisualStudioVersion = 17.10.35027.167
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SolutionConfig", "SolutionConfig", "{F29AF2F3-DEC8-58BC-043A-1447862C832D}"

src/ReactiveUI.SourceGenerators/AnalyzerReleases.Shipped.md

@@ -1,78 +1,82 @@
+; Shipped analyzer releases
+; https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.Analyzers/ReleaseTrackingAnalyzers.Help.md
+
+## Release 1.0
+
+### New Rules
+
+Rule ID | Category | Severity | Notes
+--------|----------|----------|-------
+RXUISG0001 | ReactiveUI.SourceGenerators.UnsupportedCSharpLanguageVersionAnalyzer | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0002 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0003 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0004 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0005 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0006 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0007 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0008 | ReactiveUI.SourceGenerators.AsyncVoidReturningReactiveCommandMethodAnalyzer | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0009 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0010 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0011 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0012 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0013 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0014 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0015 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0016 | ReactiveUI.SourceGenerators.PropertyToReactiveFieldCodeFixProvider | Info | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+RXUISG0017 | ReactiveUI.SourceGenerators.ObservableAsPropertyFromObservableGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
+
+
 ## Rules
 Shipped in ReactiveUI.SourceGenerators
 
-### RXUISG0001 - Unsupported C# Language Version
-This rule checks if the project is using an unsupported C# language version. The supported versions are C# 7.3 and above. If the project is using an unsupported version, the rule will raise an error.
+- RXUISG0001 - Unsupported C# Language Version
+This rule checks if the project is using an unsupported C# language version. The supported versions are C# 12.0 and above. If the project is using an unsupported version, the rule will raise an error.
 
-### RXUISG0002 - ReactiveCommandGenerator
+- RXUISG0002 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has a Invalid ReactiveCommand method signature.
 
-### RXUISG0003 - ReactiveCommandGenerator
+- RXUISG0003 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has a Invalid ReactiveCommand.CanExecute member name.
 
-### RXUISG0004 - ReactiveCommandGenerator
+- RXUISG0004 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has Multiple ReactiveCommand.CanExecute member name matches.
 
-### RXUISG0005 - ReactiveCommandGenerator
+- RXUISG0005 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has No valid ReactiveCommand.CanExecute member match.
 
-### RXUISG0006 - ReactiveCommandGenerator
+- RXUISG0006 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has Invalid field or property targeted attribute type.
 
-### RXUISG0007 - ReactiveCommandGenerator
+- RXUISG0007 - ReactiveCommandGenerator
 This rule checks if the `ReactiveCommand` has Invalid field or property targeted attribute expression.
 
-### RXUISG0008 - AsyncVoidReturningReactiveCommandMethodAnalyzer
+- RXUISG0008 - AsyncVoidReturningReactiveCommandMethodAnalyzer
 This rule checks if the `ReactiveCommand` has Async void returning method annotated with ReactiveCommand.
 
-### RXUISG0009 - ReactiveGenerator
+- RXUISG0009 - ReactiveGenerator
 This rule checks if the `Reactive` has Name collision for generated property.
 
-### RXUISG0010 - ReactiveGenerator
+- RXUISG0010 - ReactiveGenerator
 This rule checks if the `Reactive` has Invalid property targeted attribute type.
 
-### RXUISG0011 - ReactiveGenerator
+- RXUISG0011 - ReactiveGenerator
 This rule checks if the `Reactive` has Invalid property targeted attribute expression.
 
-### RXUISG0012 - ObservableAsPropertyGenerator
+- RXUISG0012 - ObservableAsPropertyGenerator
 This rule checks if the `ObservableAsProperty` has Invalid property targeted attribute type.
 
-### RXUISG0013 - ObservableAsPropertyGenerator
+- RXUISG0013 - ObservableAsPropertyGenerator
 This rule checks if the `ObservableAsProperty` has Invalid property targeted attribute expression.
 
-### RXUISG0014 - ObservableAsPropertyGenerator
+- RXUISG0014 - ObservableAsPropertyGenerator
 This rule checks if the `ObservableAsProperty` has Invalid generated property declaration.
 
-### RXUISG0015 - ReactiveGenerator
+- RXUISG0015 - ReactiveGenerator
 This rule checks if the `Reactive` attribute is being used correctly. If the `Reactive` has Invalid generated property declaration.
 
-### RXUISG0016 - PropertyToReactiveFieldCodeFixProvider
+- RXUISG0016 - PropertyToReactiveFieldCodeFixProvider
 This rule checks if there are any Properties to change to Reactive Field, change to [Reactive] private type _fieldName;.
 
-### RXUISG0017 - ObservableAsPropertyFromObservableGenerator
+- RXUISG0017 - ObservableAsPropertyFromObservableGenerator
 This rule checks if the `ObservableAsProperty` has Invalid generated property declaration.
 
-
-## Release 1.0
-
-### New Rules
-
-Rule ID | Category | Severity | Notes
---------|----------|----------|-------
-RXUISG0001 | ReactiveUI.SourceGenerators.UnsupportedCSharpLanguageVersionAnalyzer | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0002 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0003 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0004 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0005 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0006 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0007 | ReactiveUI.SourceGenerators.ReactiveCommandGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0008 | ReactiveUI.SourceGenerators.AsyncVoidReturningReactiveCommandMethodAnalyzer | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0009 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0010 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0011 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0012 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0013 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0014 | ReactiveUI.SourceGenerators.ObservableAsPropertyGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0015 | ReactiveUI.SourceGenerators.ReactiveGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0016 | ReactiveUI.SourceGenerators.PropertyToReactiveFieldCodeFixProvider | Info | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html
-RXUISG0017 | ReactiveUI.SourceGenerators.ObservableAsPropertyFromObservableGenerator | Error | See https://www.reactiveui.net/docs/handbook/view-models/boilerplate-code.html

src/ReactiveUI.SourceGenerators/AnalyzerReleases.Unshipped.md

@@ -1 +1,2 @@
-[Unshipped analyzer release](https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.Analyzers/ReleaseTrackingAnalyzers.Help.md)
+; Unshipped analyzer releases
+; https://github.com/dotnet/roslyn-analyzers/blob/main/src/Microsoft.CodeAnalysis.Analyzers/ReleaseTrackingAnalyzers.Help.md

src/ReactiveUI.SourceGenerators/Core/Extensions/AttributeDataExtensions.cs

@@ -193,4 +193,76 @@ public static string FormatAttributes(this PropertyAttributeData attr)
 
         return $"[{namespacePrefix}{attr.AttributeSyntax}]";
     }
+
+    /// <summary>
+    /// Gathers the forwarded attributes from class.
+    /// </summary>
+    /// <param name="attributeData">The attribute data.</param>
+    /// <param name="semanticModel">The semantic model.</param>
+    /// <param name="classDeclaration">The class declaration.</param>
+    /// <param name="token">The token.</param>
+    /// <param name="classAttributesInfo">The class attributes information.</param>
+    public static void GatherForwardedAttributesFromClass(
+            this AttributeData attributeData,
+            SemanticModel semanticModel,
+            ClassDeclarationSyntax classDeclaration,
+            CancellationToken token,
+            out ImmutableArray<AttributeInfo> classAttributesInfo)
+    {
+        using var classAttributesInfoBuilder = ImmutableArrayBuilder<AttributeInfo>.Rent();
+
+        static void GatherForwardedAttributes(
+            AttributeData attributeData,
+            SemanticModel semanticModel,
+            ClassDeclarationSyntax classDeclaration,
+            CancellationToken token,
+            ImmutableArrayBuilder<AttributeInfo> classAttributesInfo)
+        {
+            // Gather explicit forwarded attributes info
+            foreach (var attributeList in classDeclaration.AttributeLists)
+            {
+                foreach (var attribute in attributeList.Attributes)
+                {
+                    if (!semanticModel.GetSymbolInfo(attribute, token).TryGetAttributeTypeSymbol(out var attributeTypeSymbol))
+                    {
+                        continue;
+                    }
+
+                    var attributeArguments = attribute.ArgumentList?.Arguments ?? Enumerable.Empty<AttributeArgumentSyntax>();
+
+                    // Try to extract the forwarded attribute
+                    if (!AttributeInfo.TryCreate(attributeTypeSymbol, semanticModel, attributeArguments, token, out var attributeInfo))
+                    {
+                        continue;
+                    }
+
+                    var ignoreAttribute = attributeData.AttributeClass?.GetFullyQualifiedMetadataName();
+                    if (attributeInfo.TypeName.Contains(ignoreAttribute))
+                    {
+                        continue;
+                    }
+
+                    // Add the new attribute info to the right builder
+                    classAttributesInfo.Add(attributeInfo);
+                }
+            }
+        }
+
+        // If the method is not a partial definition/implementation, just gather attributes from the method with no modifications
+        GatherForwardedAttributes(attributeData, semanticModel, classDeclaration, token, classAttributesInfoBuilder);
+
+        classAttributesInfo = classAttributesInfoBuilder.ToImmutable();
+    }
+
+    /// <summary>
+    /// Gets the type of the generic.
+    /// </summary>
+    /// <param name="attributeData">The attribute data.</param>
+    /// <returns>A String.</returns>
+    public static string? GetGenericType(this AttributeData attributeData)
+    {
+        var success = attributeData?.AttributeClass?.ToDisplayString();
+        var start = success?.IndexOf('<') + 1 ?? 0;
+        return success?.Substring(start, success.Length - start - 1);
+    }
 }