Cross compile to Scala 3.0.0-M3

CHANGELOG.md

@@ -11,6 +11,9 @@ See also the [CHANGELOG](https://github.com/cucumber/cucumber-jvm/blob/master/CH
 
 ### Added
 
+- [Build] Cross compilation with Scala 3.0.0-M3
+  - TODO DOCUMENT BREAKING CHANGES
+
 ### Changed
 
 ### Deprecated

build.sbt

@@ -33,6 +33,7 @@ ThisBuild / homepage := Some(
 val scala211 = "2.11.12"
 val scala212 = "2.12.12"
 val scala213 = "2.13.3"
+val scala3 = "3.0.0-M3"
 
 scalaVersion := scala213
 
@@ -52,6 +53,7 @@ lazy val commonSettings = Seq(
       case Some((2, 11)) => ScalacOptions.scalacOptions211
       case Some((2, 12)) => ScalacOptions.scalacOptions212
       case Some((2, 13)) => ScalacOptions.scalacOptions213
+      case Some((3, 0))  => ScalacOptions.scalacOptions3
       case _             => Seq()
     }
   }
@@ -75,23 +77,33 @@ lazy val cucumberScala = (projectMatrix in file("cucumber-scala"))
     libraryDependencies ++= Seq(
       "io.cucumber" % "cucumber-core" % cucumberVersion,
       // Users have to provide it (for JacksonDefaultDataTableTransformer)
-      "com.fasterxml.jackson.module" %% "jackson-module-scala" % jacksonVersion % Provided,
+      ("com.fasterxml.jackson.module" %% "jackson-module-scala" % jacksonVersion % Provided)
+        .withDottyCompat(scalaVersion.value),
       "junit" % "junit" % junitVersion % Test,
       "io.cucumber" % "cucumber-junit" % cucumberVersion % Test,
-      "org.mockito" %% "mockito-scala" % mockitoScalaVersion % Test
+      ("org.mockito" %% "mockito-scala" % mockitoScalaVersion % Test)
+        .withDottyCompat(scalaVersion.value)
     ),
     libraryDependencies ++= {
       CrossVersion.partialVersion(scalaVersion.value) match {
         case Some((2, n)) if n <= 12 =>
           List("org.scala-lang.modules" %% "scala-collection-compat" % "2.3.1")
+        case Some((3, 0)) =>
+          List("dev.zio" %% "izumi-reflect" % "1.0.0-M12")
         case _ => Nil
       }
     },
     unmanagedSourceDirectories in Compile ++= {
       val sourceDir = (sourceDirectory in Compile).value
       CrossVersion.partialVersion(scalaVersion.value) match {
-        case Some((2, n)) if n <= 11 => Seq(sourceDir / "scala-2.11")
-        case _                       => Seq()
+        case Some((2, n)) if n > 11 =>
+          Seq(sourceDir / "scala-2")
+        case Some((2, n)) if n <= 11 =>
+          Seq(sourceDir / "scala-2", sourceDir / "scala-2.11")
+        case Some((3, 0)) =>
+          Seq(sourceDir / "scala-3.0")
+        case _ =>
+          Seq()
       }
     },
     // Generate I18n traits
@@ -102,7 +114,7 @@ lazy val cucumberScala = (projectMatrix in file("cucumber-scala"))
       Seq(file)
     }.taskValue
   )
-  .jvmPlatform(scalaVersions = Seq(scala213, scala212, scala211))
+  .jvmPlatform(scalaVersions = Seq(scala3, scala213, scala212, scala211))
 
 // Examples project
 lazy val examples = (projectMatrix in file("examples"))
@@ -116,7 +128,7 @@ lazy val examples = (projectMatrix in file("examples"))
     publishArtifact := false
   )
   .dependsOn(cucumberScala % Test)
-  .jvmPlatform(scalaVersions = Seq(scala213, scala212))
+  .jvmPlatform(scalaVersions = Seq(scala3, scala213, scala212))
 
 // Release & Publish
 

cucumber-scala/src/main/codegen/gen.scala

@@ -15,6 +15,30 @@ for (i <- 1 to 22) {
   println(p1 + p2 + ": Unit = { " + register + pf + otherwise + closeRegister + "\n")
 }
 
+/*
+ * Generates the evil looking apply methods in ScalaDsl#StepBody for Function1 to Function22
+ * For Scala 3
+ */
+for (i <- 1 to 22) {
+  val ts = (1 to i).map(n => s"T$n").mkString(", ")
+  val ltt = (1 to i).map(n => s"LTT[T$n]").mkString(", ")
+  val pf = "    case List(" + (1 to i).map("a" + _ + ":AnyRef").mkString(", ") + ") => \n      f(" + (1 to i).map(n => "a" + n + ".asInstanceOf[T" + n + "]").mkString(",\n        ") + ")\n"
+
+  val template =
+    s"""
+      |inline def apply[$ts](f: ($ts) => Any): Unit = {
+      |  val types = Seq($ltt)
+      |  register(types) {
+      |    $pf
+      |    case _ =>
+      |      throw new IncorrectStepDefinitionException()
+      |  }
+      |}
+      |""".stripMargin
+
+  println(template)
+}
+
 /*
  * Generates the apply methods in ParameterTypeDsl for Function1 to Function22
  */
@@ -35,4 +59,42 @@ for (i <- 1 to 22) {
       |""".stripMargin
 
   println(template)
-}
+}
+
+/*
+ * Generates the macros parameterTypes.
+ * For Scala 3
+ */
+for (i <- 1 to 22) {
+
+  val ts = (1 to i).map("T".+).mkString(", ")
+
+  val template =
+    s"""
+      |inline def parameterTypes[$ts](): Seq[MyType] = {
+      |  $${ getTypes[$ts]() }
+      |}
+      |""".stripMargin
+
+  println(template)
+}
+
+/*
+ * Generates the macros method getTypes.
+ * For Scala 3
+ */
+for (i <- 1 to 22) {
+  val ts = (1 to i).map(n => s"T$n").mkString(", ")
+  val usings = (1 to i).map(n => s"Type[T$n]").mkString(", ")
+  val reprs = (1 to i).map(n => s"TypeRepr.of[T$n]").mkString(", ")
+
+  val template =
+    s"""
+      |private def getTypes[$ts]()(using $usings, Quotes): Expr[Seq[MyType]] = {
+      |  import quotes.reflect._
+      |  getTypesFromRepr(Seq($reprs))
+      |}
+      |""".stripMargin
+
+  println(template)
+}

cucumber-scala/src/main/scala/io/cucumber/scala/ScalaTypeHelper.scala → cucumber-scala/src/main/scala-2/io/cucumber/scala/ScalaTypeHelper.scala

@@ -16,10 +16,13 @@ object ScalaTypeHelper {
 
 class ScalaParameterizedType(manifest: Manifest[_]) extends ParameterizedType {
 
-  override def getActualTypeArguments: Array[Type] =
+  private val typeArgs =
     manifest.typeArguments.map(ScalaTypeHelper.asJavaType).toArray
+  private val rawType = manifest.runtimeClass
 
-  override def getRawType: Type = manifest.runtimeClass
+  override def getActualTypeArguments: Array[Type] = typeArgs
+
+  override def getRawType: Type = rawType
 
   override def getOwnerType: Type = null