1 files changed, 42 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/EqualToOperatorValidatior.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/EqualToOperatorValidatior.xtend
new file mode 100644
index 0000000..0786662
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/EqualToOperatorValidatior.xtend
@@ -0,0 +1,42 @@
+package rba.tool.editor.validation.validators
+
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.core.EqualToOperator
+import rba.core.ExpressionType
+import rba.core.RBACorePackage
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+
+class EqualToOperatorValidatior extends AbstractRBAModelValidator {
+
+	private String EQUALTO_OPERAND_SIZE_NULL = Messages.EQUALTO_OPERAND_SIZE_NULL;
+
+	private String EQUALTO_OPERAND_SIZE = Messages.EQUALTO_OPERAND_SIZE;
+
+	private String EQUALTO_OPERAND_TYPE = Messages.EQUALTO_OPERAND_TYPE;
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def checkEqualToOperator(EqualToOperator equalToOperator) {
+
+		if (equalToOperator.operand.size == 0) {
+			error(EQUALTO_OPERAND_SIZE_NULL, RBACorePackage.Literals.OPERATOR__OPERAND);
+			return;
+		}
+		if (equalToOperator.operand.size != 1) {
+			error(EQUALTO_OPERAND_SIZE, RBACorePackage.Literals.OPERATOR__OPERAND);
+			return;
+		}
+		for (operand : equalToOperator.operand) {
+			if (operand.type != ExpressionType.VALUE) {
+				error(EQUALTO_OPERAND_TYPE, RBACorePackage.Literals.OPERATOR__OPERAND)
+				return;
+			}
+		}
+
+	}
+}