Add support for Scala Native 0.4

Author: lolgab

.travis.yml

@@ -11,10 +11,11 @@ scala:
   - 2.13.4
 
 env:
-  - SCALAJS_VERSION=         ADOPTOPENJDK=8
-  - SCALAJS_VERSION=1.4.0    ADOPTOPENJDK=8
-  - SCALAJS_VERSION=         ADOPTOPENJDK=11
-  - SCALAJS_VERSION=         ADOPTOPENJDK=15
+  - SCALAJS_VERSION=          ADOPTOPENJDK=8
+  - SCALAJS_VERSION=1.4.0     ADOPTOPENJDK=8
+  - SCALANATIVE_VERSION=0.4.0 ADOPTOPENJDK=8
+  - SCALAJS_VERSION=          ADOPTOPENJDK=11
+  - SCALAJS_VERSION=          ADOPTOPENJDK=15
 
 install:
   - git fetch --tags # get all tags for sbt-dynver

build.sbt

@@ -18,7 +18,7 @@ lazy val configSettings: Seq[Setting[_]] = Seq(
   }
 )
 
-lazy val xml = crossProject(JSPlatform, JVMPlatform)
+lazy val xml = crossProject(JSPlatform, JVMPlatform, NativePlatform)
   .withoutSuffixFor(JVMPlatform)
   .crossType(CrossType.Full)
   .in(file("."))
@@ -163,3 +163,11 @@ lazy val xml = crossProject(JSPlatform, JVMPlatform)
     Test / fork := false
   )
   .jsConfigure(_.enablePlugins(ScalaJSJUnitPlugin))
+  .nativeSettings(
+    scalaModuleMimaPreviousVersion := None, // No such release yet
+    // Scala Native cannot run forked tests
+    Test / fork := false,
+    libraryDependencies += "org.scala-native" %%% "junit-runtime" % nativeVersion % Test,
+    addCompilerPlugin("org.scala-native" % "junit-plugin" % nativeVersion cross CrossVersion.full),
+    Test / testOptions += Tests.Argument(TestFrameworks.JUnit, "-a", "-s", "-v")
+  )

build.sh

@@ -25,8 +25,10 @@ isReleaseJob() {
   fi
 }
 
-if [[ "$SCALAJS_VERSION" == "" ]]; then
+if [[ "$SCALAJS_VERSION" == "" ]] && [[ "$SCALANATIVE_VERSION" == "" ]]; then
   projectPrefix="xml/"
+elif [[ "$SCALAJS_VERSION" == "" ]]; then
+  projectPrefix="xmlNative/"
 else
   projectPrefix="xmlJS/"
 fi

project/plugins.sbt

@@ -1,7 +1,12 @@
 val scalaJSVersion =
   Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.4.0")
 
+val scalaNativeVersion =
+  Option(System.getenv("SCALANATIVE_VERSION")).filter(_.nonEmpty).getOrElse("0.4.0")
+
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "2.2.3")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
+addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.0.0")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % scalaNativeVersion)
 addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.5.2")