1 files changed, 51 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/HasComeLaterThanValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/HasComeLaterThanValidator.xtend
new file mode 100644
index 0000000..3d2d449
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/HasComeLaterThanValidator.xtend
@@ -0,0 +1,51 @@
+package rba.tool.editor.validation.validators
+
+import org.eclipse.xtext.validation.Check
+import org.eclipse.xtext.validation.EValidatorRegistrar
+import rba.core.ExpressionType
+import rba.core.HasComeLaterThan
+import rba.core.PreviousModifier
+import rba.core.RBACorePackage
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+
+class HasComeLaterThanValidator extends AbstractRBAModelValidator {
+
+	private static final String TargetOperatorName = HasComeLaterThan.simpleName
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	@Check(NORMAL)
+	def checkContentValue(HasComeLaterThan hasComeLaterThan) {
+		if (hasComeLaterThan.operand.size < 2) {
+			error(String.format(Messages.OPERAND_SIZE_TWO, TargetOperatorName),
+				RBACorePackage.Literals.OPERATOR__OPERAND)
+			return;
+		}
+		var firstOperand = hasComeLaterThan.operand.get(0)
+		if (firstOperand.type != ExpressionType::CONTENT && firstOperand.type != ExpressionType::SOUND) {
+			error(String.format(Messages.FIRST_OPERAND_MUST_CONTENT, TargetOperatorName),
+				RBACorePackage.Literals.OPERATOR__OPERAND)
+			return;
+		}
+		var argument = hasComeLaterThan.operand.get(1)
+		if (argument.type != ExpressionType::CONTENT && argument.type != ExpressionType::SOUND) {
+			error(String.format(Messages.ARGUMENT_MUST_CONTENT, TargetOperatorName),
+				RBACorePackage.Literals.OPERATOR__OPERAND, 1)
+			return;
+		}
+		if (firstOperand instanceof PreviousModifier) {
+			error(String.format(Messages.OPERAND_CANNOT_USE_PRE, TargetOperatorName),
+				RBACorePackage.Literals.OPERATOR__OPERAND)
+			return;
+		}
+		if (argument instanceof PreviousModifier) {
+			error(String.format(Messages.ARGUMENT_CANNOT_USE_PRE, TargetOperatorName),
+				RBACorePackage.Literals.OPERATOR__OPERAND, 1)
+			return;
+		}
+
+	}
+}