1 files changed, 26 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/ContentStateValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/ContentStateValidator.xtend
new file mode 100644
index 0000000..2dd45a3
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/ContentStateValidator.xtend
@@ -0,0 +1,26 @@
+package rba.tool.editor.validation.validators
+
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.core.ContentState
+import rba.core.ExpressionType
+import rba.core.RBACorePackage
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+
+class ContentStateValidator extends AbstractRBAModelValidator {
+
+	private String CONTENTSTATE_TYPE = Messages.CONTENTSTATE_TYPE;
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def checkContentState(ContentState contentState) {
+		if (contentState.value.type != ExpressionType.VALUE) {
+			error(String.format(CONTENTSTATE_TYPE, contentState.name), RBACorePackage.Literals.CONTENT_STATE__VALUE)
+			return;
+		}
+	}
+}