Minor tweaks to [CanvasEffectProperty] generator

src/ComputeSharp.D2D1.UI.SourceGenerators/CanvasEffectPropertyGenerator.Execute.cs

@@ -46,6 +46,12 @@ public static bool IsCandidatePropertyDeclaration(SyntaxNode node, CancellationT
                 return false;
             }
 
+            // Static properties are not supported
+            if (property.Modifiers.Any(SyntaxKind.StaticKeyword))
+            {
+                return false;
+            }
+
             // The accessors must be a get and a set (with any accessibility)
             if (accessors[0].Kind() is not (SyntaxKind.GetAccessorDeclaration or SyntaxKind.SetAccessorDeclaration) ||
                 accessors[1].Kind() is not (SyntaxKind.GetAccessorDeclaration or SyntaxKind.SetAccessorDeclaration))
@@ -128,6 +134,11 @@ public static CanvasEffectInvalidationType GetCanvasEffectInvalidationType(Attri
             return CanvasEffectInvalidationType.Update;
         }
 
+        /// <summary>
+        /// Writes all implementations of partial effect property declarations.
+        /// </summary>
+        /// <param name="properties">The input set of declared effect properties.</param>
+        /// <param name="writer">The <see cref="IndentedTextWriter"/> instance to write into.</param>
         public static void WritePropertyDeclarations(EquatableArray<CanvasEffectPropertyInfo> properties, IndentedTextWriter writer)
         {
             // Helper to get the nullable type name for the initial property value

src/ComputeSharp.D2D1.UI.SourceGenerators/Diagnostics/DiagnosticDescriptors.cs

@@ -80,7 +80,7 @@ internal static class DiagnosticDescriptors
         helpLinkUri: "https://github.com/Sergio0694/ComputeSharp");
 
     /// <summary>
-    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property with invalid accessors.
+    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property that is not an incomplete partial property definition.
     /// <para>
     /// Format: <c>"The property "{0}" is not an incomplete partial definition ([GeneratedCanvasEffectProperty] must be used on partial property definitions with no implementation part)"</c>.
     /// </para>
@@ -92,11 +92,11 @@ internal static class DiagnosticDescriptors
         category: DiagnosticCategory,
         defaultSeverity: DiagnosticSeverity.Error,
         isEnabledByDefault: true,
-        description: "A property using [GeneratedCanvasEffectProperty] is either not partial, or a partial implementation part ([GeneratedCanvasEffectProperty] must be used on partial property definitions with no implementation par).",
+        description: "A property using [GeneratedCanvasEffectProperty] is either not partial, or a partial implementation part ([GeneratedCanvasEffectProperty] must be used on partial property definitions with no implementation part).",
         helpLinkUri: "https://github.com/Sergio0694/ComputeSharp");
 
     /// <summary>
-    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property with invalid accessors.
+    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property that returns a ref value.
     /// <para>
     /// Format: <c>"The property "{0}" returns a value by reference ([GeneratedCanvasEffectProperty] must be used on properties returning a type by value)"</c>.
     /// </para>
@@ -112,7 +112,7 @@ internal static class DiagnosticDescriptors
         helpLinkUri: "https://github.com/Sergio0694/ComputeSharp");
 
     /// <summary>
-    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property with invalid accessors.
+    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property that returns a byref-like value.
     /// <para>
     /// Format: <c>"The property "{0}" returns a ref struct value ([GeneratedCanvasEffectProperty] must be used on properties with a type that is not a ref struct)"</c>.
     /// </para>
@@ -128,7 +128,7 @@ internal static class DiagnosticDescriptors
         helpLinkUri: "https://github.com/Sergio0694/ComputeSharp");
 
     /// <summary>
-    /// Gets a <see cref="DiagnosticDescriptor"/> for a CanvasEffect property with invalid accessors.
+    /// Gets a <see cref="DiagnosticDescriptor"/> for when C# is not set to 'preview'.
     /// <para>
     /// Format: <c>"Using [GeneratedCanvasEffectProperty] requires the C# language version to be set to 'preview', as support for the 'field' keyword is needed by the source generators to emit valid code (add &lt;LangVersion&gt;preview&lt;/LangVersion&gt; to your .csproj/.props file)"</c>.
     /// </para>