C#: Ignore explicit interface implementations

(cherry picked from commit 0372bd56b69fd3a0f8efd6067deb30ee7a60e17d)

4 files changed, 34 insertions, 2 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 41bf89e6d8..8be1151142 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/Common.cs
@@ -194,6 +194,32 @@ namespace Godot.SourceGenerators
                 location?.SourceTree?.FilePath));
         }
 
+        public static void ReportExportedMemberIsExplicitInterfaceImplementation(
+            GeneratorExecutionContext context,
+            ISymbol exportedMemberSymbol
+        )
+        {
+            var locations = exportedMemberSymbol.Locations;
+            var location = locations.FirstOrDefault(l => l.SourceTree != null) ?? locations.FirstOrDefault();
+
+            string message = $"Attempted to export explicit interface property implementation: " +
+                             $"'{exportedMemberSymbol.ToDisplayString()}'";
+
+            string description = $"{message}. Explicit interface implementations can't be exported." +
+                                 " Remove the '[Export]' attribute.";
+
+            context.ReportDiagnostic(Diagnostic.Create(
+                new DiagnosticDescriptor(id: "GD0106",
+                    title: message,
+                    messageFormat: message,
+                    category: "Usage",
+                    DiagnosticSeverity.Error,
+                    isEnabledByDefault: true,
+                    description),
+                location,
+                location?.SourceTree?.FilePath));
+        }
+
         public static void ReportSignalDelegateMissingSuffix(
             GeneratorExecutionContext context,
             INamedTypeSymbol delegateSymbol)
diff --git a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertiesGenerator.cs b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertiesGenerator.cs
index b720fb93a3..d333c24451 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertiesGenerator.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertiesGenerator.cs
@@ -113,7 +113,7 @@ namespace Godot.SourceGenerators
             var propertySymbols = members
                 .Where(s => !s.IsStatic && s.Kind == SymbolKind.Property)
                 .Cast<IPropertySymbol>()
-                .Where(s => !s.IsIndexer);
+                .Where(s => !s.IsIndexer && s.ExplicitInterfaceImplementations.Length == 0);
 
             var fieldSymbols = members
                 .Where(s => !s.IsStatic && s.Kind == SymbolKind.Field && !s.IsImplicitlyDeclared)
diff --git a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertyDefValGenerator.cs b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertyDefValGenerator.cs
index 99a4c95e73..089ee3f196 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertyDefValGenerator.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptPropertyDefValGenerator.cs
@@ -151,6 +151,12 @@ namespace Godot.SourceGenerators
                     continue;
                 }
 
+                if (property.ExplicitInterfaceImplementations.Length > 0)
+                {
+                    Common.ReportExportedMemberIsExplicitInterfaceImplementation(context, property);
+                    continue;
+                }
+
                 var propertyType = property.Type;
                 var marshalType = MarshalUtils.ConvertManagedTypeToMarshalType(propertyType, typeCache);
 
diff --git a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
index 821f3af75f..d8c6f3a196 100644
--- a/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
+++ b/modules/mono/editor/Godot.NET.Sdk/Godot.SourceGenerators/ScriptSerializationGenerator.cs
@@ -113,7 +113,7 @@ namespace Godot.SourceGenerators
             var propertySymbols = members
                 .Where(s => !s.IsStatic && s.Kind == SymbolKind.Property)
                 .Cast<IPropertySymbol>()
-                .Where(s => !s.IsIndexer);
+                .Where(s => !s.IsIndexer && s.ExplicitInterfaceImplementations.Length == 0);
 
             var fieldSymbols = members
                 .Where(s => !s.IsStatic && s.Kind == SymbolKind.Field && !s.IsImplicitlyDeclared)