1 files changed, 71 insertions, 0 deletions
diff --git a/rba.tool.editor/src/rba/tool/editor/validation/validators/ObjectCompareValidator.xtend b/rba.tool.editor/src/rba/tool/editor/validation/validators/ObjectCompareValidator.xtend
new file mode 100644
index 0000000..ba897e1
--- /dev/null
+++ b/rba.tool.editor/src/rba/tool/editor/validation/validators/ObjectCompareValidator.xtend
@@ -0,0 +1,71 @@
+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.ObjectCompare
+import rba.core.RBACorePackage
+import rba.tool.editor.messages.Messages
+import rba.tool.editor.validation.AbstractRBAModelValidator
+import static rba.tool.editor.validation.validators.ValidatorUtils.*;
+import rba.core.Expression
+import java.util.List
+
+class ObjectCompareValidator extends AbstractRBAModelValidator {
+
+	override register(EValidatorRegistrar registrar) {
+		// not needed for classes used as ComposedCheck
+	}
+
+	def protected getOperatorName() {
+		return ObjectCompare.simpleName;
+	}
+
+	@Check(NORMAL)
+	def checkObjectCompare(ObjectCompare objectCompare) {
+		doCheck(objectCompare.operand);
+	}
+
+	/** Check points.
+	 * * operand size is 2.
+	 * * type of operands are AREA/CONTENT/ZONE/SOUND.
+	 */
+	def protected doCheck(List<Expression> operands) {
+		if (!operandSizeMustBeTwo(operands, getOperatorName, [ msg | error(msg, RBACorePackage.Literals.OPERATOR__OPERAND, 0)])) {
+			return;
+		}
+
+		val first = operands.get(0)
+		switch (first.type) {
+			case ExpressionType.VALUE: {
+				val message = String.format(Messages.FIRST_OPERAND_MUST_BE_OBJECT, getOperatorName);
+				error(message, RBACorePackage.Literals.OPERATOR__OPERAND, 0, null)
+				return;
+			}
+			case AREA,
+			case CONTENT,
+			case CONTENT_STATE,
+			case ZONE,
+			case SOUND: {
+			}
+			default: {
+				val message = String.format(Messages.OPERANDS_MUST_BE_OBJECT, getOperatorName);
+				error(message, RBACorePackage.Literals.OPERATOR__OPERAND, 0, null)
+				return;
+			}
+		}
+
+		for (var i = 1; i < operands.size; i++) {
+			var operand = operands.get(i)
+			if (operand.type !== first.type && ObjectsMustBeAreaOrContent(operand.type, first.type)) {
+				val message = String.format(Messages.OPERANDS_MUST_BE_OBJECT, getOperatorName);
+				error(message, RBACorePackage.Literals.OPERATOR__OPERAND, i, null)
+				return;
+			}
+		}
+	}
+	
+	def private boolean ObjectsMustBeAreaOrContent(ExpressionType type1, ExpressionType type2) {
+		return true
+	}
+}