feat(language): node constants in rule actions

1 files changed, 3 insertions, 5 deletions

diff --git a/subprojects/language-ide/src/main/java/tools/refinery/language/ide/syntaxcoloring/ProblemSemanticHighlightingCalculator.java b/subprojects/language-ide/src/main/java/tools/refinery/language/ide/syntaxcoloring/ProblemSemanticHighlightingCalculator.java
index 06f0e758..58d6748a 100644
--- a/subprojects/language-ide/src/main/java/tools/refinery/language/ide/syntaxcoloring/ProblemSemanticHighlightingCalculator.java
+++ b/subprojects/language-ide/src/main/java/tools/refinery/language/ide/syntaxcoloring/ProblemSemanticHighlightingCalculator.java
@@ -125,7 +125,7 @@ public class ProblemSemanticHighlightingCalculator extends DefaultSemanticHighli
                         classesBuilder.add(ERROR_CLASS);
                 }
                 if (eObject instanceof Node node) {
-                        highlightNode(node, reference, classesBuilder);
+                        highlightNode(node, classesBuilder);
                 }
                 if (eObject instanceof Relation relation) {
                         var typeHash = typeHashProvider.getTypeHash(relation);
@@ -137,10 +137,8 @@ public class ProblemSemanticHighlightingCalculator extends DefaultSemanticHighli
                 return classes.toArray(new String[0]);
         }
 
-        private static void highlightNode(Node node, EReference reference, ImmutableList.Builder<String> classesBuilder) {
-                if (reference == ProblemPackage.Literals.VARIABLE_OR_NODE_EXPR__VARIABLE_OR_NODE) {
-                        classesBuilder.add(NODE_CLASS);
-                }
+        private static void highlightNode(Node node, ImmutableList.Builder<String> classesBuilder) {
+                classesBuilder.add(NODE_CLASS);
                 if (ProblemUtil.isAtomNode(node)) {
                         classesBuilder.add(ATOM_NODE_CLASS);
                 }