From c0a0bba5d8484b556700555da7cb46edc22d858c Mon Sep 17 00:00:00 2001
From: Skylot <skylot@gmail.com>
Date: Sat, 4 May 2019 11:13:02 +0300
Subject: [PATCH] style: add design checkstyle rules

---
 config/checkstyle/checkstyle.xml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index f8e1e97f5..152804f42 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -101,6 +101,14 @@
 		<module name="PackageDeclaration"/>
 		<module name="StringLiteralEquality"/>
 
+		<!-- design -->
+		<module name="OneTopLevelClass"/>
+		<module name="MutableException"/>
+		<module name="InterfaceIsType"/>
+		<module name="ThrowsCount">
+			<property name="max" value="2"/>
+		</module>
+
 		<!-- misc -->
 		<module name="ArrayTypeStyle"/>
 		<module name="OuterTypeFilename"/>