Remove the IO capability

.gitignore

@@ -15,4 +15,8 @@ project/plugins/project/
 .idea*
 .bsp
 .metals
-.vscode
+.vscode
+.bloop
+metals.sbt
+
+/notes.md

build.sbt

@@ -24,22 +24,10 @@ compileDocumentation := {
   (documentation / mdoc).toTask(" --out target/ox-doc").value
 }
 
-val useRequireIOPlugin =
-  // Based on:
-  // https://stackoverflow.com/questions/54660122/how-to-include-a-scala-compiler-plugin-from-a-local-path
-  Compile / scalacOptions ++= {
-    val jar = (plugin / Compile / Keys.`package`).value
-    System.setProperty("sbt.paths.plugin.jar", jar.getAbsolutePath)
-
-    val addPlugin = "-Xplugin:" + jar.getAbsolutePath
-    val dummy = "-Jdummy=" + jar.lastModified
-    Seq(addPlugin, dummy)
-  }
-
 lazy val rootProject = (project in file("."))
   .settings(commonSettings)
   .settings(publishArtifact := false, name := "ox")
-  .aggregate(core, plugin, pluginTest, examples, kafka, mdcLogback)
+  .aggregate(core, examples, kafka, mdcLogback)
 
 lazy val core: Project = (project in file("core"))
   .settings(commonSettings)
@@ -49,48 +37,6 @@ lazy val core: Project = (project in file("core"))
       "com.softwaremill.jox" % "channels" % "0.3.1",
       scalaTest
     ),
-    // Check IO usage in core
-    useRequireIOPlugin,
-    Test / fork := true
-  )
-
-lazy val plugin: Project = (project in file("plugin"))
-  .settings(commonSettings)
-  .settings(
-    name := "plugin",
-    libraryDependencies ++= Seq("org.scala-lang" %% "scala3-compiler" % scalaVersion.value, scalaTest)
-  )
-
-lazy val pluginTest: Project = (project in file("plugin-test"))
-  .settings(commonSettings)
-  .settings(
-    name := "plugin-test",
-    libraryDependencies ++= Seq(
-      "org.scala-lang" %% "scala3-compiler" % scalaVersion.value,
-      scalaTest
-    ),
-    publishArtifact := false,
-    // Playground testing
-    useRequireIOPlugin,
-    // Unit testing, based on:
-    // https://github.com/xebia-functional/munit-compiler-toolkit/
-    Test / javaOptions += {
-      val dependencyJars = (Compile / dependencyClasspath).value.files
-      val thisJar = (Compile / Keys.`package`).value
-      val `scala-compiler-classpath` =
-        (dependencyJars :+ thisJar)
-          .map(_.toPath.toAbsolutePath.toString())
-          .mkString(":")
-      s"-Dscala-compiler-classpath=${`scala-compiler-classpath`}"
-    },
-    Test / javaOptions += Def.taskDyn {
-      Def.task {
-        val _ = (plugin / Compile / Keys.`package`).value
-        val `scala-compiler-options` =
-          s"${(plugin / Compile / packageBin).value}"
-        s"""-Dscala-compiler-plugin=${`scala-compiler-options`}"""
-      }
-    }.value,
     Test / fork := true
   )
 
@@ -118,8 +64,7 @@ lazy val kafka: Project = (project in file("kafka"))
       "org.apache.pekko" %% "pekko-connectors-kafka" % "1.0.0" % Test,
       "org.apache.pekko" %% "pekko-stream" % "1.1.1" % Test,
       scalaTest
-    ),
-    useRequireIOPlugin
+    )
   )
   .dependsOn(core)
 

core/src/main/scala/ox/OxApp.scala

@@ -24,10 +24,8 @@ enum ExitCode(val code: Int):
   *
   * Certain aspects of exception handling can be configured using [[OxApp.Settings]] and overriding the `settings` method.
   *
-  * The application's code is specified in a `run` method, which has two capabilities granted:
-  *
-  *   - [[Ox]], to fork asynchronously computations, and register clean up of resources
-  *   - [[IO]], to perform I/O operations
+  * The application's code is specified in a `run` method, which has the [[Ox]] capability granted: to fork asynchronously computations, and
+  * register clean up of resources
   */
 trait OxApp:
   protected def settings: OxApp.Settings = OxApp.Settings.Default
@@ -36,7 +34,7 @@ trait OxApp:
     try
       unsupervised {
         val cancellableMainFork = forkCancellable {
-          try supervised(IO.unsafe(run(args.toVector)))
+          try supervised(run(args.toVector))
           catch
             case NonFatal(e) =>
               settings.handleException(e)
@@ -67,7 +65,7 @@ trait OxApp:
     try Runtime.getRuntime.addShutdownHook(thread)
     catch case _: IllegalStateException => ()
 
-  def run(args: Vector[String])(using Ox, IO): ExitCode
+  def run(args: Vector[String])(using Ox): ExitCode
 end OxApp
 
 object OxApp:
@@ -107,11 +105,11 @@ object OxApp:
 
   /** Simple variant of OxApp does not pass command line arguments and exits with exit code 0 if no exceptions were thrown. */
   trait Simple extends OxApp:
-    override final def run(args: Vector[String])(using Ox, IO): ExitCode =
+    override final def run(args: Vector[String])(using Ox): ExitCode =
       run
       ExitCode.Success
 
-    def run(using Ox, IO): Unit
+    def run(using Ox): Unit
 
   /** WithErrorMode variant of OxApp allows to specify what kind of error handling for the main function should be used. Base trait for
     * integrations.
@@ -122,7 +120,7 @@ object OxApp:
     *   wrapper type for given ErrorMode
     */
   trait WithErrorMode[E, F[_]](em: ErrorMode[E, F]) extends OxApp:
-    override final def run(args: Vector[String])(using Ox, IO): ExitCode =
+    override final def run(args: Vector[String])(using Ox): ExitCode =
       val result = runWithErrors(args)
       if em.isError(result) then handleError(em.getError(result))
       else ExitCode.Success
@@ -133,7 +131,7 @@ object OxApp:
     /** This template method is to be implemented by abstract classes that add integration for particular error handling data structure of
       * type F[_].
       */
-    def runWithErrors(args: Vector[String])(using Ox, IO): F[ExitCode]
+    def runWithErrors(args: Vector[String])(using Ox): F[ExitCode]
   end WithErrorMode
 
   /** WithEitherErrors variant of OxApp integrates OxApp with an `either` block and allows for usage of `.ok()` combinators in the body of
@@ -145,8 +143,8 @@ object OxApp:
   abstract class WithEitherErrors[E] extends WithErrorMode(EitherMode[E]()):
     type EitherError[Err] = Label[Either[Err, ExitCode]]
 
-    override final def runWithErrors(args: Vector[String])(using Ox, IO): Either[E, ExitCode] =
+    override final def runWithErrors(args: Vector[String])(using Ox): Either[E, ExitCode] =
       either[E, ExitCode](run(args))
 
-    def run(args: Vector[String])(using Ox, EitherError[E], IO): ExitCode
+    def run(args: Vector[String])(using Ox, EitherError[E]): ExitCode
 end OxApp

core/src/main/scala/ox/channels/SourceCompanionIOOps.scala

@@ -22,7 +22,7 @@ trait SourceCompanionIOOps:
     * @return
     *   a `Source` of chunks of bytes.
     */
-  def fromInputStream(is: InputStream, chunkSize: Int = 1024)(using Ox, StageCapacity, IO): Source[Chunk[Byte]] =
+  def fromInputStream(is: InputStream, chunkSize: Int = 1024)(using Ox, StageCapacity): Source[Chunk[Byte]] =
     val chunks = StageCapacity.newChannel[Chunk[Byte]]
     forkPropagate(chunks) {
       try
@@ -54,7 +54,7 @@ trait SourceCompanionIOOps:
       * @throws SecurityException
       *   If SecurityManager error occurs when opening the file.
       */
-  def fromFile(path: Path, chunkSize: Int = 1024)(using Ox, StageCapacity, IO): Source[Chunk[Byte]] =
+  def fromFile(path: Path, chunkSize: Int = 1024)(using Ox, StageCapacity): Source[Chunk[Byte]] =
     if Files.isDirectory(path) then throw new IOException(s"Path $path is a directory")
     val chunks = StageCapacity.newChannel[Chunk[Byte]]
     val jFileChannel =

core/src/main/scala/ox/channels/SourceIOOps.scala

@@ -39,7 +39,7 @@ trait SourceIOOps[+T]:
     * @throws IOException
     *   if an error occurs when writing or closing of the `OutputStream`.
     */
-  def toOutputStream(outputStream: OutputStream)(using T <:< Chunk[Byte], IO): Unit =
+  def toOutputStream(outputStream: OutputStream)(using T <:< Chunk[Byte]): Unit =
     repeatWhile {
       outer.receiveOrClosed() match
         case ChannelClosed.Done =>
@@ -65,7 +65,7 @@ trait SourceIOOps[+T]:
     * @throws IOException
     *   if an error occurs when opening the file or during the write process.
     */
-  def toFile(path: Path)(using T <:< Chunk[Byte], IO): Unit =
+  def toFile(path: Path)(using T <:< Chunk[Byte]): Unit =
     if Files.isDirectory(path) then throw new IOException(s"Path $path is a directory")
     val jFileChannel =
       try {
@@ -93,7 +93,7 @@ trait SourceIOOps[+T]:
               throw e
     }
 
-  private inline def close(closeable: Closeable, cause: Option[Throwable] = None)(using IO): Unit =
+  private inline def close(closeable: Closeable, cause: Option[Throwable] = None): Unit =
     try closeable.close()
     catch
       case NonFatal(closeException) =>

core/src/main/scala/ox/race.scala

@@ -5,7 +5,7 @@ import scala.annotation.tailrec
 import scala.concurrent.TimeoutException
 import scala.concurrent.duration.FiniteDuration
 import scala.util.control.{ControlThrowable, NonFatal}
-import scala.util.{Failure, Success, Try}
+import scala.util.{Failure, Success}
 
 /** A `Some` if the computation `t` took less than `duration`, and `None` otherwise. if the computation `t` throws an exception, it is
   * propagated.

core/src/main/scala/ox/scheduling/scheduled.scala

@@ -3,7 +3,7 @@ package ox.scheduling
 import ox.{EitherMode, ErrorMode, sleep}
 
 import scala.annotation.tailrec
-import scala.concurrent.duration.{Duration, FiniteDuration, DurationLong}
+import scala.concurrent.duration.{FiniteDuration, DurationLong}
 import scala.util.Try
 
 /** The mode that specifies how to interpret the duration provided by the schedule. */

core/src/test/scala/ox/OxAppTest.scala

@@ -18,7 +18,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
       override def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
 
-      override def run(args: Vector[String])(using Ox, IO): ExitCode = Success
+      override def run(args: Vector[String])(using Ox): ExitCode = Success
 
     Main10.main(Array.empty)
 
@@ -43,7 +43,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
       override private[ox] def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
 
-      override def run(args: Vector[String])(using Ox, IO): ExitCode =
+      override def run(args: Vector[String])(using Ox): ExitCode =
         forever: // will never finish
           sleep(10.millis)
 
@@ -64,7 +64,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     var stackTrace = ""
 
     object Main30 extends OxApp:
-      override def run(args: Vector[String])(using Ox, IO): ExitCode =
+      override def run(args: Vector[String])(using Ox): ExitCode =
         Failure(23)
 
       override private[ox] def exit(exitCode: ExitCode): Unit =
@@ -79,7 +79,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     // failure by throwing an exception
 
     object Main31 extends OxApp:
-      override def run(args: Vector[String])(using Ox, IO): ExitCode =
+      override def run(args: Vector[String])(using Ox): ExitCode =
         throw Exception("oh no")
 
       override private[ox] def exit(exitCode: ExitCode): Unit =
@@ -100,7 +100,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     // failure by throwing an exception in a user fork
 
     object Main32 extends OxApp:
-      override def run(args: Vector[String])(using Ox, IO): ExitCode =
+      override def run(args: Vector[String])(using Ox): ExitCode =
         forkUser(throw Exception("oh no"))
         Success
 
@@ -144,7 +144,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
             OxApp.Settings.defaultHandleInterruptedException(t => handledExceptions = t :: handledExceptions)
           )
 
-      override def run(args: Vector[String])(using Ox, IO): ExitCode =
+      override def run(args: Vector[String])(using Ox): ExitCode =
         releaseAfterScope:
           throw new Exception("bye!")
 
@@ -166,7 +166,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
       override def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
 
-      override def run(using Ox, IO): Unit = ()
+      override def run(using Ox): Unit = ()
 
     Main50.main(Array.empty)
 
@@ -190,7 +190,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
       override def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
 
-      override def run(using Ox, IO): Unit =
+      override def run(using Ox): Unit =
         forever:
           sleep(10.millis)
 
@@ -207,7 +207,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     var stackTrace = ""
 
     object Main70 extends OxApp.Simple:
-      override def run(using Ox, IO): Unit = throw Exception("oh no")
+      override def run(using Ox): Unit = throw Exception("oh no")
 
       override private[ox] def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
@@ -239,7 +239,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
 
       override def handleError(e: FunException): ExitCode = Failure(e.code)
 
-      override def run(args: Vector[String])(using Ox, EitherError[FunException], IO): ExitCode =
+      override def run(args: Vector[String])(using Ox, EitherError[FunException]): ExitCode =
         errOrEc.ok()
 
     Main80.main(Array.empty)
@@ -267,7 +267,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
       override private[ox] def exit(exitCode: ExitCode): Unit =
         ec = exitCode.code
 
-      override def run(args: Vector[String])(using Ox, EitherError[FunException], IO): ExitCode =
+      override def run(args: Vector[String])(using Ox, EitherError[FunException]): ExitCode =
         forever: // will never finish
           sleep(10.millis)
 
@@ -287,7 +287,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     var stackTrace = ""
 
     object Main100 extends OxApp.WithEitherErrors[FunException]:
-      override def run(args: Vector[String])(using Ox, EitherError[FunException], IO): ExitCode =
+      override def run(args: Vector[String])(using Ox, EitherError[FunException]): ExitCode =
         errOrEc.ok()
 
       override private[ox] def exit(exitCode: ExitCode): Unit =
@@ -302,7 +302,7 @@ class OxAppTest extends AnyFlatSpec with Matchers:
     ec = Int.MinValue
 
     object Main101 extends OxApp.WithEitherErrors[FunException]:
-      override def run(args: Vector[String])(using Ox, EitherError[FunException], IO): ExitCode =
+      override def run(args: Vector[String])(using Ox, EitherError[FunException]): ExitCode =
         throw Exception("oh no")
 
       override private[ox] def exit(exitCode: ExitCode): Unit =