Add scala native support!

build.sbt

@@ -37,11 +37,6 @@ inThisBuild(
       Resolver.sonatypeRepo("releases"),
       Resolver.sonatypeRepo("snapshots")
     ),
-    libraryDependencies ++= List(
-      munit.value % Test,
-      scalacheck % Test,
-      scalametaTestkit % Test
-    ),
     testFrameworks += new TestFramework("munit.Framework")
   )
 )
@@ -64,7 +59,7 @@ commands += Command.command("ci-test") { s =>
     s
 }
 
-lazy val dynamic = project
+lazy val dynamic = crossProject(JVMPlatform, NativePlatform)
   .in(file("scalafmt-dynamic"))
   .settings(
     moduleName := "scalafmt-dynamic",
@@ -76,14 +71,24 @@ lazy val dynamic = project
       "io.get-coursier" % "interface" % "0.0.17",
       "com.typesafe" % "config" % "1.4.1",
       munit.value % Test,
-      scalametaTestkit % Test
+      scalametaTestkit.value % Test
     ),
     scalacOptions ++= scalacJvmOptions.value
   )
+  .nativeSettings(
+    libraryDependencies ++= List(
+      // "org.ekrich" %%% "sconfig" % "x.y.z",
+      "org.ekrich" %%% "sjavatime" % "1.1.5"
+    ),
+    nativeLinkStubs := true
+  )
   .dependsOn(interfaces)
   .enablePlugins(BuildInfoPlugin)
 
-lazy val interfaces = project
+lazy val dynamicJVM = dynamic.jvm
+lazy val dynamicNative = dynamic.native
+
+lazy val interfaces = crossProject(JVMPlatform, NativePlatform)
   .in(file("scalafmt-interfaces"))
   .settings(
     moduleName := "scalafmt-interfaces",
@@ -100,14 +105,16 @@ lazy val interfaces = project
     }
   )
 
-lazy val core = crossProject(JVMPlatform)
+lazy val interfacesJVM = interfaces.jvm
+lazy val interfacesNative = interfaces.native
+
+lazy val core = crossProject(JVMPlatform, NativePlatform)
   .in(file("scalafmt-core"))
   .settings(
     moduleName := "scalafmt-core",
     buildInfoSettings,
     scalacOptions ++= scalacJvmOptions.value,
     libraryDependencies ++= Seq(
-      metaconfig.value,
       scalameta.value,
       // scala-reflect is an undeclared dependency of fansi, see #1252.
       // Scalafmt itself does not require scala-reflect.
@@ -128,21 +135,23 @@ lazy val core = crossProject(JVMPlatform)
       }
     }
   )
-  // .jsSettings(
-  //   libraryDependencies ++= List(
-  //     metaconfigHocon.value,
-  //     scalatest.value % Test // must be here for coreJS/test to run anything
-  //   )
-  // )
+  .nativeSettings(
+    libraryDependencies ++= List(
+      metaconfigSconfig.value
+    ),
+    nativeLinkStubs := true
+  )
   .jvmSettings(
     Test / run / fork := true,
     libraryDependencies ++= List(
-      metaconfigTypesafe.value
+      metaconfigTypesafe.value,
+      metaconfig.value
     )
   )
   .enablePlugins(BuildInfoPlugin)
+
 lazy val coreJVM = core.jvm
-// lazy val coreJS = core.js
+lazy val coreNative = core.native
 
 import sbtassembly.AssemblyPlugin.defaultUniversalScript
 
@@ -160,7 +169,7 @@ val scalacJvmOptions = Def.setting {
   }
 }
 
-lazy val cli = project
+lazy val cli = crossProject(JVMPlatform, NativePlatform)
   .in(file("scalafmt-cli"))
   .settings(
     moduleName := "scalafmt-cli",
@@ -175,9 +184,8 @@ lazy val cli = project
         oldStrategy(x)
     },
     libraryDependencies ++= Seq(
-      "com.googlecode.java-diff-utils" % "diffutils" % "1.3.0",
-      "com.martiansoftware" % "nailgun-server" % "0.9.1",
-      "com.github.scopt" %% "scopt" % "4.0.1",
+      // "com.googlecode.java-diff-utils" % "diffutils" % "1.3.0",
+      "com.github.scopt" %%% "scopt" % "4.0.1",
       // undeclared transitive dependency of coursier-small
       "org.scala-lang.modules" %% "scala-xml" % "1.3.0"
     ),
@@ -196,36 +204,55 @@ lazy val cli = project
           .toSeq
     }
   )
-  .dependsOn(coreJVM, dynamic)
+  .jvmSettings {
+    libraryDependencies += "com.martiansoftware" % "nailgun-server" % "0.9.1",
+  }
+  .nativeSettings {
+    nativeLinkStubs := true
+  }
+  .dependsOn(core, dynamic)
   .enablePlugins(GraalVMNativeImagePlugin)
 
-lazy val tests = project
+lazy val cliJVM = cli.jvm
+lazy val cliNative = cli.native
+
+lazy val tests = crossProject(JVMPlatform, NativePlatform)
   .in(file("scalafmt-tests"))
   .settings(
     publish / skip := true,
     libraryDependencies ++= Seq(
       // Test dependencies
-      "com.lihaoyi" %% "scalatags" % "0.9.4",
-      scalametaTestkit,
+      "com.lihaoyi" %%% "scalatags" % "0.9.4",
+      scalametaTestkit.value,
       munit.value
     ),
     scalacOptions ++= scalacJvmOptions.value,
-    javaOptions += "-Dfile.encoding=UTF8",
     buildInfoPackage := "org.scalafmt.tests",
     buildInfoKeys := Seq[BuildInfoKey](
-      "resourceDirectory" -> (Test / resourceDirectory).value
+      "resourceDirectory" -> (baseDirectory.value / ".." / "shared" / "src" / "test" / "resources")
     )
   )
   .enablePlugins(BuildInfoPlugin)
-  .dependsOn(coreJVM, dynamic, cli)
+  .dependsOn(core, dynamic, cli)  
+  .nativeSettings(
+    nativeConfig ~= {
+      _.withMode(scalanative.build.Mode.debug)
+        .withLinkStubs(true)
+    }
+  ).jvmSettings(
+    javaOptions += "-Dfile.encoding=UTF8"
+  )
+
+lazy val testsJVM = tests.jvm
+lazy val testsNative = tests.native
 
 lazy val benchmarks = project
   .in(file("scalafmt-benchmarks"))
   .settings(
     publish / skip := true,
     moduleName := "scalafmt-benchmarks",
     libraryDependencies ++= Seq(
-      scalametaTestkit
+      scalametaTestkit.value
     ),
     run / javaOptions ++= Seq(
       "-Djava.net.preferIPv4Stack=true",
@@ -254,7 +281,7 @@ lazy val docs = project
     publish / skip := true,
     mdoc := (Compile / run).evaluated
   )
-  .dependsOn(cli, dynamic)
+  .dependsOn(cliJVM, dynamicJVM)
   .enablePlugins(DocusaurusPlugin)
 
 val V = "\\d+\\.\\d+\\.\\d+"

project/Dependencies.scala

@@ -6,7 +6,7 @@ import org.portablescala.sbtplatformdeps.PlatformDepsPlugin.autoImport._
 
 object Dependencies {
   val metaconfigV = "0.9.13"
-  val scalametaV  = "4.4.19"
+  val scalametaV  = "4.4.22"
   val scalacheckV = "1.15.4"
   val coursier    = "1.0.3"
   val munitV      = "0.7.26"
@@ -18,13 +18,14 @@ object Dependencies {
     )
   }
 
-  val scalametaTestkit = "org.scalameta" %% "testkit" % scalametaV
+  val scalametaTestkit = Def.setting("org.scalameta" %%% "testkit" % scalametaV)
 
   val scalacheck = "org.scalacheck" %% "scalacheck" % scalacheckV
   val munit      = Def.setting("org.scalameta" %%% "munit" % munitV)
   val scalameta  = Def.setting("org.scalameta" %%% "scalameta" % scalametaV excludeAll scalapb.value)
 
   val metaconfig         = Def.setting("com.geirsson" %%% "metaconfig-core" % metaconfigV)
+  val metaconfigSconfig  = Def.setting("com.geirsson" %%% "metaconfig-sconfig" % metaconfigV)
   val metaconfigTypesafe = Def.setting("com.geirsson" %%% "metaconfig-typesafe-config" % metaconfigV)
   val metaconfigHocon    = Def.setting("com.geirsson" %%% "metaconfig-hocon" % metaconfigV)
 

project/plugins.sbt

@@ -14,3 +14,6 @@ addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.5.1")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.9.2")
 addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.8.1")
+
+addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.0.0")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.0")

scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/CliUtils.scala

@@ -0,0 +1,31 @@
+package org.scalafmt.cli
+
+import com.martiansoftware.nailgun.NGContext
+import org.scalafmt.util.AbsoluteFile
+
+trait CliUtils { this: Cli =>
+
+  def nailMain(nGContext: NGContext): Unit = {
+    val workingDirectory =
+      AbsoluteFile.fromPath(nGContext.getWorkingDirectory).getOrElse {
+        throw new IllegalStateException(
+          s"Expected absolute path, " +
+            s"obtained nGContext.getWorkingDirectory = ${nGContext.getWorkingDirectory}"
+        )
+      }
+    val exit = mainWithOptions(
+      nGContext.getArgs,
+      CliOptions.default.copy(
+        common = CliOptions.default.common.copy(
+          cwd = workingDirectory,
+          out = nGContext.out,
+          in = nGContext.in,
+          err = nGContext.err
+        )
+      )
+    )
+    nGContext.exit(exit.code)
+  }
+
+  protected val isNative: Boolean = false
+}

scalafmt-cli/jvm/src/main/scala/org/scalafmt/cli/TermUtils.scala

@@ -0,0 +1,12 @@
+package org.scalafmt.cli
+
+import java.sql.Timestamp
+
+trait TermUtils {
+
+  private val format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+  protected def formatTimestamp(ts: Long): String =
+    format.format(new Timestamp(ts))
+
+  def noConsole = System.console() == null
+}

scalafmt-cli/native/src/main/scala/org/scalafmt/cli/CliUtils.scala

@@ -0,0 +1,6 @@
+package org.scalafmt.cli
+
+
+trait CliUtils {
+  protected  val isNative: Boolean = true
+}

scalafmt-cli/native/src/main/scala/org/scalafmt/cli/TermUtils.scala

@@ -0,0 +1,14 @@
+package org.scalafmt.cli
+
+import java.time.Instant
+
+trait TermUtils {
+
+  // TODO print according to format
+  // private val format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+  protected def formatTimestamp(ts: Long): String ={
+    Instant.ofEpochMilli(ts).toString
+
+  }
+  def noConsole = true
+}

scalafmt-cli/src/main/scala/org/scalafmt/cli/Cli.scala → scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/Cli.scala

@@ -1,6 +1,5 @@
 package org.scalafmt.cli
 
-import com.martiansoftware.nailgun.NGContext
 import java.nio.file.{Files, Paths}
 
 import org.scalafmt.Versions
@@ -9,39 +8,18 @@ import org.scalafmt.util.AbsoluteFile
 import scala.io.Source
 import scala.util.control.NoStackTrace
 
-object Cli {
-  def nailMain(nGContext: NGContext): Unit = {
-    val workingDirectory =
-      AbsoluteFile.fromPath(nGContext.getWorkingDirectory).getOrElse {
-        throw new IllegalStateException(
-          s"Expected absolute path, " +
-            s"obtained nGContext.getWorkingDirectory = ${nGContext.getWorkingDirectory}"
-        )
-      }
-    val exit = mainWithOptions(
-      nGContext.getArgs,
-      CliOptions.default.copy(
-        common = CliOptions.default.common.copy(
-          cwd = workingDirectory,
-          out = nGContext.out,
-          in = nGContext.in,
-          err = nGContext.err
-        )
-      )
-    )
-    nGContext.exit(exit.code)
-  }
+class Cli extends CliUtils {
 
   private def throwIfError(exit: ExitCode): Unit = {
     if (exit != ExitCode.Ok) {
       throw new RuntimeException(exit.toString) with NoStackTrace
     }
   }
 
-  def main(args: Array[String]): Unit = {
-    val exit = mainWithOptions(args, CliOptions.default)
-    sys.exit(exit.code)
-  }
+  // def main(args: Array[String]): Unit = {
+  //   val exit = mainWithOptions(args, CliOptions.default)
+  //   sys.exit(exit.code)
+  // }
 
   def exceptionThrowingMain(args: Array[String]): Unit = {
     val exit = mainWithOptions(args, CliOptions.default)
@@ -99,7 +77,7 @@ object Cli {
     // - `scalafmt-core` if the specified `version` setting match with build version
     //   (or if the `version` is not specified).
     options.getVersionIfDifferent match {
-      case Some(v) if isNativeImage =>
+      case Some(v) if isNativeImage || isNative =>
         Left(
           s"""error: invalid Scalafmt version.
             |
@@ -156,3 +134,19 @@ object Cli {
     }
   }
 }
+
+object Cli extends Cli {
+
+  def main(args: Array[String]): Unit = {
+    val workingDirectory = Paths.get(".").toAbsolutePath
+    val options = CliOptions.default.copy(
+      common = CommonOptions(
+        in = System.in,
+        out = System.out,
+        err = System.err,
+        cwd = AbsoluteFile.fromPath(workingDirectory).get
+      )
+    )
+    mainWithOptions(args, options)
+  }
+}

scalafmt-cli/src/main/scala/org/scalafmt/cli/CliArgParser.scala → scalafmt-cli/shared/src/main/scala/org/scalafmt/cli/CliArgParser.scala

@@ -28,8 +28,7 @@ object CliArgParser {
 
   val scoptParser: OptionParser[CliOptions] =
     new scopt.OptionParser[CliOptions]("scalafmt") {
-      override def showUsageOnError: Option[Boolean] = Some(false)
-
+      override def showUsageOnError: Option[Boolean] = Some(false)   
       private def printAndExit(
           includeUsage: Boolean
       )(ignore: Unit, c: CliOptions): CliOptions = {