Scala Native support (#319)

.github/workflows/ci.yml

@@ -25,6 +25,7 @@ jobs:
         os: [ubuntu-latest]
         scala: [2.12.13, 2.13.5]
         java: [[email protected]]
+        ci: [validateJVM, validateJS, validateNative]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -52,17 +53,8 @@ jobs:
       - name: Check that workflows are up to date
         run: sbt ++${{ matrix.scala }} githubWorkflowCheck
 
-      - name: Build and Validate
-        run: sbt ++${{ matrix.scala }} validate
-
-      - name: Compress target directories
-        run: tar cf targets.tar target core/.js/target core/.jvm/target project/target
-
-      - name: Upload target directories
-        uses: actions/upload-artifact@v2
-        with:
-          name: target-${{ matrix.os }}-${{ matrix.scala }}-${{ matrix.java }}
-          path: targets.tar
+      - name: Validation
+        run: sbt ++${{ matrix.scala }} '${{ matrix.ci }}'
 
   publish:
     name: Publish Artifacts
@@ -97,26 +89,6 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.13)
-        uses: actions/download-artifact@v2
-        with:
-          name: target-${{ matrix.os }}-2.12.13-${{ matrix.java }}
-
-      - name: Inflate target directories (2.12.13)
-        run: |
-          tar xf targets.tar
-          rm targets.tar
-
-      - name: Download target directories (2.13.5)
-        uses: actions/download-artifact@v2
-        with:
-          name: target-${{ matrix.os }}-2.13.5-${{ matrix.java }}
-
-      - name: Inflate target directories (2.13.5)
-        run: |
-          tar xf targets.tar
-          rm targets.tar
-
       - uses: olafurpg/setup-gpg@v3
 
       - env:

build.sbt

@@ -56,28 +56,35 @@ lazy val coreSettings =
 
 lazy val kittens = project
   .in(file("."))
-  .aggregate(coreJS, coreJVM)
-  .dependsOn(coreJS, coreJVM)
+  .aggregate(coreJS, coreJVM, coreNative)
+  .dependsOn(coreJS, coreJVM, coreNative)
   .settings(coreSettings: _*)
   .settings(noPublishSettings)
 
-lazy val core = crossProject(JSPlatform, JVMPlatform)
+lazy val core = crossProject(JVMPlatform, JSPlatform, NativePlatform)
   .crossType(CrossType.Pure)
   .settings(moduleName := "kittens")
   .settings(coreSettings: _*)
   .jsSettings(commonJsSettings: _*)
 
 lazy val coreJVM = core.jvm
 lazy val coreJS = core.js
+lazy val coreNative = core.native
 
 addCommandAlias("root", ";project kittens")
 addCommandAlias("jvm", ";project coreJVM")
 addCommandAlias("js", ";project coreJS")
+addCommandAlias("native", ";project coreNative")
 
-addCommandAlias("validate", "all scalafmtCheckAll scalafmtSbtCheck test doc coreJVM/mimaReportBinaryIssues")
+addCommandAlias(
+  "validateJVM",
+  "all scalafmtCheckAll scalafmtSbtCheck coreJVM/test coreJVM/doc coreJVM/mimaReportBinaryIssues"
+)
+addCommandAlias("validateJS", "all coreJS/test")
+addCommandAlias("validateNative", "all coreNative/test")
+addCommandAlias("mima", "coreJVM/mimaReportBinaryIssues")
 addCommandAlias("fmt", "all scalafmtSbt scalafmtAll")
 addCommandAlias("fmtCheck", "all scalafmtSbtCheck scalafmtCheckAll")
-addCommandAlias("mima", "coreJVM/mimaReportBinaryIssues")
 
 lazy val crossVersionSharedSources: Seq[Setting[_]] = Seq(Compile, Test).map { sc =>
   (sc / unmanagedSourceDirectories) ++= (sc / unmanagedSourceDirectories).value.map { dir: File =>
@@ -102,7 +109,9 @@ lazy val noPublishSettings =
   publish / skip := true
 
 ThisBuild / githubWorkflowJavaVersions := Seq("[email protected]")
-ThisBuild / githubWorkflowBuild := Seq(WorkflowStep.Sbt(List("validate"), id = None, name = Some("Build and Validate")))
+ThisBuild / githubWorkflowArtifactUpload := false
+ThisBuild / githubWorkflowBuildMatrixAdditions += "ci" -> List("validateJVM", "validateJS", "validateNative")
+ThisBuild / githubWorkflowBuild := List(WorkflowStep.Sbt(List("${{ matrix.ci }}"), name = Some("Validation")))
 ThisBuild / githubWorkflowTargetTags ++= Seq("v*")
 ThisBuild / githubWorkflowPublishTargetBranches := Seq(RefPredicate.StartsWith(Ref.Tag("v")))
 ThisBuild / githubWorkflowPublishPreamble += WorkflowStep.Use(UseRef.Public("olafurpg", "setup-gpg", "v3"))

core/src/test/scala/cats/derived/empty.scala

@@ -42,18 +42,6 @@ class EmptySuite extends KittensSuite {
     test(s"$context.Empty[IList[Dummy]]")(assert(iList.empty == INil()))
     test(s"$context.Empty[Snoc[Dummy]]")(assert(snoc.empty == SNil()))
     test(s"$context.Empty respects existing instances")(assert(box.empty == Box(Mask(0xffffffff))))
-    // Known limitation of recursive typeclass derivation.
-    test(s"$context.Empty[Chain] throws a StackOverflowError") {
-      try { // MUnit doesn't catch fatal errors
-        chain.empty
-        fail("Expected a StackOverflowError")
-      } catch {
-        case error: Throwable =>
-          val jvm = error.isInstanceOf[StackOverflowError]
-          val js = Option(error.getMessage).exists(_.contains("stack size exceeded"))
-          assert(jvm || js)
-      }
-    }
     checkAll(s"$context.Empty is Serializable", SerializableTests.serializable(Empty[Interleaved[String]]))
   }
 

project/plugins.sbt

@@ -1,7 +1,9 @@
-addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.5.1")
-addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.0")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")
+addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.0.0")
+addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.0")
+addSbtPlugin("com.codecommit" % "sbt-github-actions" % "0.10.1")
+addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.8.1")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2")
-addSbtPlugin("com.codecommit" % "sbt-github-actions" % "0.10.1")