From b5e07cf2095c8ac953b20024701a461e025e19fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Blizni=C4=8Denko?= <Jan.Bliznicenko@gmail.com>
Date: Mon, 22 Jul 2024 18:54:38 +0200
Subject: [PATCH] Do not allow generalization self-loops

---
 .../OPUmlClassController.class.st                    | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st b/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
index ce36d23f..459fed7d 100644
--- a/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
+++ b/repository/OpenPonk-ClassEditor/OPUmlClassController.class.st
@@ -56,11 +56,13 @@ OPUmlClassController >> canBeSourceFor: aController [
 
 { #category : 'adding' }
 OPUmlClassController >> canBeTargetFor: aController [
-	^ (aController isKindOf: OPUmlAttributeController)
-		| (aController isKindOf: OPUmlOperationController)
-		| (aController isKindOf: OPUmlGeneralizationController)
-		| (aController isKindOf: OPUmlAssociationController)
-		| (aController isKindOf: OPUmlExtensionController)
+
+	^ (aController isKindOf: OPUmlAttributeController) or: [
+		  (aController isKindOf: OPUmlOperationController) or: [
+			  (aController isKindOf: OPUmlAssociationController) or: [
+				  (aController isKindOf: OPUmlExtensionController) or: [
+					  (aController isKindOf: OPUmlGeneralizationController) and: [
+						  aController source ~= self ] ] ] ] ]
 ]
 
 { #category : 'figures' }