From 7aac5f023cfdfbd1439eb3347f4135043c3977d5 Mon Sep 17 00:00:00 2001
From: Jakob Odersky <jakob@driver.xyz>
Date: Wed, 14 Feb 2018 18:11:03 -0800
Subject: Add fatal warnings checking that doesn't consider deprecations

---
 src/main/scala/xyz.driver.sbt/FatalWarnings.scala | 31 +++++++++++++++++++++++
 src/main/scala/xyz.driver.sbt/SbtSettings.scala   |  1 -
 2 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 src/main/scala/xyz.driver.sbt/FatalWarnings.scala

diff --git a/src/main/scala/xyz.driver.sbt/FatalWarnings.scala b/src/main/scala/xyz.driver.sbt/FatalWarnings.scala
new file mode 100644
index 0000000..b7fc585
--- /dev/null
+++ b/src/main/scala/xyz.driver.sbt/FatalWarnings.scala
@@ -0,0 +1,31 @@
+package xyz.driver.sbt
+
+import sbt.{Def, _}
+import sbt.Keys._
+import xsbti.compile.CompileAnalysis
+
+import scala.collection.JavaConverters._
+
+object FatalWarnings extends AutoPlugin {
+
+  override def requires = plugins.JvmPlugin
+  override def trigger  = allRequirements
+
+  override def projectSettings: Seq[Def.Setting[_]] = Seq(
+    compile in Compile := {
+      val compiled: CompileAnalysis = (compile in Compile).value
+      val problems = compiled.readSourceInfos().getAllSourceInfos.asScala.flatMap {
+        case (_, info) =>
+          info.getReportedProblems
+      }
+
+      val deprecationsOnly = problems.forall { problem =>
+        problem.message().contains("is deprecated")
+      }
+
+      if (!deprecationsOnly) sys.error("Fatal warnings: some warnings other than deprecations were found.")
+      compiled
+    }
+  )
+
+}
diff --git a/src/main/scala/xyz.driver.sbt/SbtSettings.scala b/src/main/scala/xyz.driver.sbt/SbtSettings.scala
index d888e53..45228f7 100644
--- a/src/main/scala/xyz.driver.sbt/SbtSettings.scala
+++ b/src/main/scala/xyz.driver.sbt/SbtSettings.scala
@@ -84,7 +84,6 @@ object SbtSettings extends AutoPlugin {
     val scalacLintingSettings = Seq(
       scalacOptions ++= {
         Seq(
-          "-Xfatal-warnings",
           "-Xlint:_,-unused,-missing-interpolator",
           "-Ywarn-numeric-widen",
           "-Ywarn-dead-code",
-- 
cgit v1.2.3