From 900133f1b303df1148c84a9c49debd3b28e60785 Mon Sep 17 00:00:00 2001
From: Nik Everett <nik9000@gmail.com>
Date: Tue, 2 Feb 2016 18:49:31 -0500
Subject: [PATCH] Suppress checkstyle on generated files in painless

Closes #16387
---
 .../gradle/precommit/PrecommitTasks.groovy             |  3 +++
 buildSrc/src/main/resources/checkstyle.xml             |  4 ++++
 .../src/main/resources/checkstyle_suppressions.xml     | 10 ++++++++++
 3 files changed, 17 insertions(+)
 create mode 100644 buildSrc/src/main/resources/checkstyle_suppressions.xml

diff --git a/buildSrc/src/main/groovy/org/elasticsearch/gradle/precommit/PrecommitTasks.groovy b/buildSrc/src/main/groovy/org/elasticsearch/gradle/precommit/PrecommitTasks.groovy
index d4d4d08c393..1cdeec762d2 100644
--- a/buildSrc/src/main/groovy/org/elasticsearch/gradle/precommit/PrecommitTasks.groovy
+++ b/buildSrc/src/main/groovy/org/elasticsearch/gradle/precommit/PrecommitTasks.groovy
@@ -94,6 +94,9 @@ class PrecommitTasks {
         project.checkstyle {
             config = project.resources.text.fromFile(
                 PrecommitTasks.getResource('/checkstyle.xml'), 'UTF-8')
+            configProperties = [
+                suppressions: PrecommitTasks.getResource('/checkstyle_suppressions.xml')
+            ]
         }
         for (String taskName : ['checkstyleMain', 'checkstyleTest']) {
             Task task = project.tasks.findByName(taskName)
diff --git a/buildSrc/src/main/resources/checkstyle.xml b/buildSrc/src/main/resources/checkstyle.xml
index b44c649a52b..4dd0534fa01 100644
--- a/buildSrc/src/main/resources/checkstyle.xml
+++ b/buildSrc/src/main/resources/checkstyle.xml
@@ -6,6 +6,10 @@
 <module name="Checker">
   <property name="charset" value="UTF-8" />
 
+  <module name="SuppressionFilter">
+    <property name="file" value="${suppressions}" />
+  </module>
+
   <module name="TreeWalker">
     <!-- ~3500 violations
     <module name="LineLength">
diff --git a/buildSrc/src/main/resources/checkstyle_suppressions.xml b/buildSrc/src/main/resources/checkstyle_suppressions.xml
new file mode 100644
index 00000000000..641c6ec46de
--- /dev/null
+++ b/buildSrc/src/main/resources/checkstyle_suppressions.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<!DOCTYPE suppressions PUBLIC
+          "-//Puppy Crawl//DTD Suppressions 1.1//EN"
+          "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+
+<suppressions>
+  <!-- These files are generated by ANTLR so its silly to hold them to our rules. -->
+  <suppress files="org/elasticsearch/painless/PainlessLexer\.java" checks="." />
+  <suppress files="org/elasticsearch/painless/PainlessParser(|BaseVisitor|Visitor)\.java" checks="." />
+</suppressions>