Issue #14487: add support to ignore JSNI methods for LineLength check…

… in google config

src/it/java/com/google/checkstyle/test/chapter4formatting/rule44columnlimit/LineLengthTest.java

@@ -20,6 +20,7 @@
 package com.google.checkstyle.test.chapter4formatting.rule44columnlimit;
 
 import org.junit.jupiter.api.Test;
+import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
 
 import com.google.checkstyle.test.base.AbstractGoogleModuleTestSupport;
 import com.puppycrawl.tools.checkstyle.api.Configuration;
@@ -46,4 +47,15 @@ public void testLineLength() throws Exception {
         verify(checkConfig, filePath, expected, warnList);
     }
 
+    @Test
+    public void testLineLengthJsniMethods() throws Exception {
+        final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
+
+        final Configuration checkConfig = getModuleConfig("LineLength");
+        final String filePath = getPath("InputLineLengthJsniMethods.java");
+
+        final Integer[] warnList = getLinesWithWarn(filePath);
+        verify(checkConfig, filePath, expected, warnList);
+    }
+
 }

src/it/resources/com/google/checkstyle/test/chapter4formatting/rule44columnlimit/InputLineLengthJsniMethods.java

@@ -0,0 +1,8 @@
+package com.google.checkstyle.test.chapter4formatting.rule44columnlimit;
+
+public class InputLineLengthJsniMethods {
+  public static native void alertMessage(String msg, int a, int b, int c, int d, int e, int f, int g, int h) /*-{
+    $wnd.alert(msg);
+    console.log('a really long message here blah blah blah bruh bruh bruhhhhhhhhhhhhhhhhhhhhhhhhhhhh');
+  }-*/;
+}

src/main/resources/google_checks.xml

@@ -42,6 +42,14 @@
     <property name="eachLine" value="true"/>
   </module>
 
+  <!-- To ignore JSNI Methods for LineLength check -->
+  <!-- See https://google.github.io/styleguide/javaguide.html#s4.4-column-limit  -->
+  <module name="SuppressWithPlainTextCommentFilter">
+    <property name="offCommentFormat" value="\/\*-\{"/>
+    <property name="onCommentFormat" value="\}-\*\/"/>
+    <property name="messageFormat" value="Line is longer than 100 characters. *"/>
+  </module>
+
   <module name="LineLength">
     <property name="fileExtensions" value="java"/>
     <property name="max" value="100"/>