1 files changed, 189 insertions, 3 deletions
diff --git a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
index 4867c986e6..c1ae993251 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
@@ -1,3 +1,4 @@
+using System.Linq;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 
@@ -14,9 +15,8 @@ namespace Godot.SourceGenerators
                 "Missing partial modifier on declaration of type '" +
                 $"{symbol.FullQualifiedName()}' which is a subclass of '{GodotClasses.Object}'";
 
-            string description = $"{message}. Subclasses of '{GodotClasses.Object}' must be " +
-                                 "declared with the partial modifier or annotated with the " +
-                                 $"attribute '{GodotClasses.DisableGodotGeneratorsAttr}'.";
+            string description = $"{message}. Subclasses of '{GodotClasses.Object}' " +
+                                 "must be declared with the partial modifier.";
 
             context.ReportDiagnostic(Diagnostic.Create(
                 new DiagnosticDescriptor(id: "GODOT-G0001",
@@ -29,5 +29,191 @@ namespace Godot.SourceGenerators
                 cds.GetLocation(),
                 cds.SyntaxTree.FilePath));
         }
+
+        public static void ReportNonPartialGodotScriptOuterClass(
+            GeneratorExecutionContext context,
+            TypeDeclarationSyntax outerTypeDeclSyntax
+        )
+        {
+            var outerSymbol = context.Compilation
+                .GetSemanticModel(outerTypeDeclSyntax.SyntaxTree)
+                .GetDeclaredSymbol(outerTypeDeclSyntax);
+
+            string fullQualifiedName = outerSymbol is INamedTypeSymbol namedTypeSymbol ?
+                namedTypeSymbol.FullQualifiedName() :
+                "type not found";
+
+            string message =
+                $"Missing partial modifier on declaration of type '{fullQualifiedName}', " +
+                $"which contains one or more subclasses of '{GodotClasses.Object}'";
+
+            string description = $"{message}. Subclasses of '{GodotClasses.Object}' and their " +
+                                 "containing types must be declared with the partial modifier.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0002",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                outerTypeDeclSyntax.GetLocation(),
+                outerTypeDeclSyntax.SyntaxTree.FilePath));
+        }
+
+        public static void ReportExportedMemberIsStatic(
+            GeneratorExecutionContext context,
+            ISymbol exportedMemberSymbol
+        )
+        {
+            var locations = exportedMemberSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+            bool isField = exportedMemberSymbol is IFieldSymbol;
+
+            string message = $"Attempted to export static {(isField ? "field" : "property")}: " +
+                             $"'{exportedMemberSymbol.ToDisplayString()}'";
+
+            string description = $"{message}. Only instance fields and properties can be exported." +
+                                 " Remove the 'static' modifier or the '[Export]' attribute.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0101",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
+        public static void ReportExportedMemberTypeNotSupported(
+            GeneratorExecutionContext context,
+            ISymbol exportedMemberSymbol
+        )
+        {
+            var locations = exportedMemberSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+            bool isField = exportedMemberSymbol is IFieldSymbol;
+
+            string message = $"The type of the exported {(isField ? "field" : "property")} " +
+                             $"is not supported: '{exportedMemberSymbol.ToDisplayString()}'";
+
+            string description = $"{message}. Use a supported type or remove the '[Export]' attribute.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0102",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
+        public static void ReportExportedMemberIsReadOnly(
+            GeneratorExecutionContext context,
+            ISymbol exportedMemberSymbol
+        )
+        {
+            var locations = exportedMemberSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+            bool isField = exportedMemberSymbol is IFieldSymbol;
+
+            string message = $"The exported {(isField ? "field" : "property")} " +
+                             $"is read-only: '{exportedMemberSymbol.ToDisplayString()}'";
+
+            string description = isField ?
+                $"{message}. Exported fields cannot be read-only." :
+                $"{message}. Exported properties must be writable.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0103",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
+        public static void ReportExportedMemberIsWriteOnly(
+            GeneratorExecutionContext context,
+            ISymbol exportedMemberSymbol
+        )
+        {
+            var locations = exportedMemberSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+
+            string message = $"The exported property is write-only: '{exportedMemberSymbol.ToDisplayString()}'";
+
+            string description = $"{message}. Exported properties must be readable.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0104",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
+        public static void ReportSignalDelegateMissingSuffix(
+            GeneratorExecutionContext context,
+            INamedTypeSymbol delegateSymbol)
+        {
+            var locations = delegateSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+
+            string message = "The name of the delegate must end with 'EventHandler': " +
+                             delegateSymbol.ToDisplayString() +
+                             $". Did you mean '{delegateSymbol.Name}EventHandler'?";
+
+            string description = $"{message}. Rename the delegate accordingly or remove the '[Signal]' attribute.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0201",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
+        public static void ReportSignalDelegateSignatureNotSupported(
+            GeneratorExecutionContext context,
+            INamedTypeSymbol delegateSymbol)
+        {
+            var locations = delegateSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+
+            string message = "The delegate signature of the signal " +
+                             $"is not supported: '{delegateSymbol.ToDisplayString()}'";
+
+            string description = $"{message}. Use supported types only or remove the '[Signal]' attribute.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GODOT-G0202",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
     }
 }