Add diagnostic descriptr

hadashiA · Nov 18, 2024 · c312107 · c312107
1 parent 15b25bc
commit c312107
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Showing 2 changed files with 12 additions and 0 deletions.
diff --git a/VContainer.SourceGenerator/DiagnosticDescriptors.cs b/VContainer.SourceGenerator/DiagnosticDescriptors.cs
@@ -85,5 +85,13 @@ static class DiagnosticDescriptors
             category: Category,
             defaultSeverity: DiagnosticSeverity.Warning,
             isEnabledByDefault: true);
+
+        public static readonly DiagnosticDescriptor ConstructorNotFound = new(
+            id: "VCON0011",
+            title: "The any callbale constructor is not found. Cannot support to code generation.",
+            messageFormat: "Cannot find any constructor of '{0}' that can be called from internal. It cannot support source generator.",
+            category: Category,
+            defaultSeverity: DiagnosticSeverity.Warning,
+            isEnabledByDefault: true);
     }
 }
diff --git a/VContainer.SourceGenerator/Emitter.cs b/VContainer.SourceGenerator/Emitter.cs
@@ -250,6 +250,10 @@ public static bool TryEmitCreateInstanceMethod(
 
         if (constructorSymbol == null)
         {
+            context.ReportDiagnostic(Diagnostic.Create(
+                DiagnosticDescriptors.ConstructorNotFound,
+                typeMeta.GetLocation(),
+                typeMeta.TypeName));
             return false;
         }