Cross build for Scala 3.2.1

.github/workflows/scala.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         scala:
-        - 3.1.2
+        - 3.2.1
 
     steps:
     - uses: actions/checkout@v2

Dsl/src/main/scala/com/thoughtworks/dsl/Dsl.scala

@@ -1,5 +1,6 @@
 package com.thoughtworks.dsl
-import com.thoughtworks.dsl.Dsl.!!
+
+private type !![R, +A] = (A => R) => R
 
 import scala.annotation._
 import scala.collection._
@@ -40,6 +41,54 @@ opaque type Dsl[-Keyword, Domain, +Value] <: (
 
 private[dsl] trait LowPriorityDsl1 { this: Dsl.type =>
 
+  opaque type Searching[-Keyword, Domain, +Value] <: Dsl[
+    Keyword,
+    Domain,
+    Value
+  ] = Dsl[Keyword, Domain, Value]
+  object Searching
+      extends Searching.AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived:
+    private[Searching] trait StackUnsafeDerived:
+      given [Keyword, UnsafeDomain, Value](using
+          dsl: Dsl.Derived.StackUnsafe[Keyword, UnsafeDomain, Value]
+      ): Searching[Keyword, UnsafeDomain, Value] = dsl
+    private[Searching] trait StackSafeDerivedThenStackUnsafeDerived
+        extends Searching.StackUnsafeDerived:
+      given [Keyword, DerivedDomain, Value](using
+          dsl: Dsl.Derived.StackSafe[Keyword, DerivedDomain, Value]
+      ): Searching[Keyword, DerivedDomain, Value] = dsl
+    private[Searching] trait ComposedThenStackSafeDerivedThenStackUnsafeDerived
+        extends Searching.StackSafeDerivedThenStackUnsafeDerived:
+      given [ComposedKeyword, Domain, Value](using
+          dsl: Dsl.Composed[ComposedKeyword, Domain, Value]
+      ): Searching[ComposedKeyword, Domain, Value] = dsl
+    private[Searching] trait AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
+        extends Searching.ComposedThenStackSafeDerivedThenStackUnsafeDerived:
+      given [Keyword, Domain, Value](using
+          dsl: Dsl.Original[Keyword, Domain, Value]
+      ): Searching[Keyword, Domain, Value] = dsl
+    object AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
+        extends AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
+
+    private[Searching] trait ComposedThenStackUnsafeDerived
+        extends Searching.StackUnsafeDerived:
+      given [ComposedKeyword, Domain, Value](using
+          dsl: Dsl.Composed[ComposedKeyword, Domain, Value]
+      ): Searching[ComposedKeyword, Domain, Value] = dsl
+    private[Searching] trait StackSafeDerivedThenComposedThenStackUnsafeDerived
+        extends Searching.ComposedThenStackUnsafeDerived:
+      given [Keyword, DerivedDomain, Value](using
+          dsl: Dsl.Derived.StackSafe[Keyword, DerivedDomain, Value]
+      ): Searching[Keyword, DerivedDomain, Value] = dsl
+    private[Searching] trait AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
+        extends Searching.StackSafeDerivedThenComposedThenStackUnsafeDerived:
+      given [Keyword, Domain, Value](using
+          dsl: Dsl.Original[Keyword, Domain, Value]
+      ): Searching[Keyword, Domain, Value] = dsl
+    object AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
+        extends AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
+  end Searching
+
   private def deriveFunction1Dsl[Keyword, State, Domain, Value](using
       restDsl: Dsl.Searching[Keyword, Domain, Value]
   ): Dsl[Keyword, State => Domain, Value] = Dsl {
@@ -94,14 +143,18 @@ private[dsl] trait LowPriorityDsl0 extends LowPriorityDsl1 { this: Dsl.type =>
 
 }
 
+inline def Dsl[Keyword, Domain, Value](using
+    dummyImplicit: DummyImplicit = DummyImplicit.dummyImplicit
+): (
+  (
+      Keyword,
+      (Value => Domain)
+  ) => Domain
+) =:= Dsl[Keyword, Domain, Value] =
+  summon
+
 object Dsl extends LowPriorityDsl0 {
-  def apply[Keyword, Domain, Value]: (
-    (
-        Keyword,
-        (Value => Domain)
-    ) => Domain
-  ) =:= Dsl[Keyword, Domain, Value] =
-    summon
+
   private[dsl] abstract class TrampolineFunction1[-A, +R] extends (A => R) {
     protected def step(): A => R
     @tailrec
@@ -163,14 +216,13 @@ object Dsl extends LowPriorityDsl0 {
       Value
     ] =
       Dsl[Keyword, Domain, Value]
-    object StackSafe:
-      def apply[Keyword, Domain, Value]: (
-        (
-            Keyword,
-            (Value => Domain)
-        ) => Domain
-      ) =:= StackSafe[Keyword, Domain, Value] =
-        summon
+    def StackSafe[Keyword, Domain, Value]: (
+      (
+          Keyword,
+          (Value => Domain)
+      ) => Domain
+    ) =:= StackSafe[Keyword, Domain, Value] =
+      summon
 
     /** A [[Dsl]] derived from a stack-unsafe domain, e.g.
       * [[scala.concurrent.Future]]
@@ -181,14 +233,13 @@ object Dsl extends LowPriorityDsl0 {
       Value
     ] =
       Dsl[Keyword, Domain, Value]
-    object StackUnsafe:
-      def apply[Keyword, Domain, Value]: (
-        (
-            Keyword,
-            (Value => Domain)
-        ) => Domain
-      ) =:= StackUnsafe[Keyword, Domain, Value] =
-        summon
+    def StackUnsafe[Keyword, Domain, Value]: (
+      (
+          Keyword,
+          (Value => Domain)
+      ) => Domain
+    ) =:= StackUnsafe[Keyword, Domain, Value] =
+      summon
 
   /** An [[Dsl]] for a control flow [[Keyword]], composed of other [[Dsl]]s for
     * subtree of the [[Keyword]]. For example, a [[Dsl.Composed]] for
@@ -200,14 +251,13 @@ object Dsl extends LowPriorityDsl0 {
     Domain,
     Value
   ] = Dsl[Keyword, Domain, Value]
-  object Composed:
-    def apply[Keyword, Domain, Value]: (
-      (
-          Keyword,
-          (Value => Domain)
-      ) => Domain
-    ) =:= Composed[Keyword, Domain, Value] =
-      summon
+  def Composed[Keyword, Domain, Value]: (
+    (
+        Keyword,
+        (Value => Domain)
+    ) => Domain
+  ) =:= Composed[Keyword, Domain, Value] =
+    summon
 
   /** An original [[Dsl]] for a [[Keyword]], i.e. neither [[Derived.StackSafe]]
     * nor [[Derived.StackUnsafe]] nor [[Composed]].
@@ -218,61 +268,14 @@ object Dsl extends LowPriorityDsl0 {
     Value
   ] =
     Dsl[Keyword, Domain, Value]
-  object Original:
-    def apply[Keyword, Domain, Value]: (
-      (
-          Keyword,
-          (Value => Domain)
-      ) => Domain
-    ) =:= Original[Keyword, Domain, Value] =
-      summon
-
-  opaque type Searching[-Keyword, Domain, +Value] <: Dsl[
-    Keyword,
-    Domain,
-    Value
-  ] = Dsl[Keyword, Domain, Value]
-  object Searching
-      extends Searching.AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived:
-    private[Searching] trait StackUnsafeDerived:
-      given [Keyword, UnsafeDomain, Value](using
-          dsl: Dsl.Derived.StackUnsafe[Keyword, UnsafeDomain, Value]
-      ): Dsl.Searching[Keyword, UnsafeDomain, Value] = dsl
-    private[Searching] trait StackSafeDerivedThenStackUnsafeDerived
-        extends Searching.StackUnsafeDerived:
-      given [Keyword, DerivedDomain, Value](using
-          dsl: Dsl.Derived.StackSafe[Keyword, DerivedDomain, Value]
-      ): Dsl.Searching[Keyword, DerivedDomain, Value] = dsl
-    private[Searching] trait ComposedThenStackSafeDerivedThenStackUnsafeDerived
-        extends Searching.StackSafeDerivedThenStackUnsafeDerived:
-      given [ComposedKeyword, Domain, Value](using
-          dsl: Dsl.Composed[ComposedKeyword, Domain, Value]
-      ): Dsl.Searching[ComposedKeyword, Domain, Value] = dsl
-    private[Searching] trait AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
-        extends Searching.ComposedThenStackSafeDerivedThenStackUnsafeDerived:
-      given [Keyword, Domain, Value](using
-          dsl: Dsl.Original[Keyword, Domain, Value]
-      ): Dsl.Searching[Keyword, Domain, Value] = dsl
-    object AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
-        extends AtomicThenComposedThenStackSafeDerivedThenStackUnsafeDerived
 
-    private[Searching] trait ComposedThenStackUnsafeDerived
-        extends Searching.StackUnsafeDerived:
-      given [ComposedKeyword, Domain, Value](using
-          dsl: Dsl.Composed[ComposedKeyword, Domain, Value]
-      ): Dsl.Searching[ComposedKeyword, Domain, Value] = dsl
-    private[Searching] trait StackSafeDerivedThenComposedThenStackUnsafeDerived
-        extends Searching.ComposedThenStackUnsafeDerived:
-      given [Keyword, DerivedDomain, Value](using
-          dsl: Dsl.Derived.StackSafe[Keyword, DerivedDomain, Value]
-      ): Dsl.Searching[Keyword, DerivedDomain, Value] = dsl
-    private[Searching] trait AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
-        extends Searching.StackSafeDerivedThenComposedThenStackUnsafeDerived:
-      given [Keyword, Domain, Value](using
-          dsl: Dsl.Original[Keyword, Domain, Value]
-      ): Dsl.Searching[Keyword, Domain, Value] = dsl
-    object AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
-        extends AtomicThenStackSafeDerivedThenComposedThenStackUnsafeDerived
+  def Original[Keyword, Domain, Value]: (
+    (
+        Keyword,
+        (Value => Domain)
+    ) => Domain
+  ) =:= Original[Keyword, Domain, Value] =
+    summon
 
   extension [Keyword, Value](
       inline from: Keyword
@@ -411,8 +414,6 @@ object Dsl extends LowPriorityDsl0 {
   ] !! Throwable, TailRecValue] =
     Dsl.Derived.StackUnsafe(derivedThrowableTailRecDsl)
 
-  private[dsl] type !![R, +A] = (A => R) => R
-
   @FunctionalInterface
   trait Lift[From, +To] extends (From => To)
   private[dsl] trait LowPriorityLift0 { this: Lift.type =>
@@ -452,7 +453,6 @@ object Dsl extends LowPriorityDsl0 {
 
     object OneStep extends LowPriorityOneStep0 {
 
-      import Dsl.!!
       given [LeftDomain, RightDomain]
           : OneStep[RightDomain, LeftDomain !! RightDomain] = r => _(r)
 
@@ -491,9 +491,7 @@ object Dsl extends LowPriorityDsl0 {
     opaque type Opaque = Any
     object Opaque {
       opaque type Of[+Self] <: Self & Opaque = Self
-      object Of {
-        def apply[Self]: Self =:= Of[Self] = summon
-      }
+      def Of[Self]: Self =:= Of[Self] = summon
     }
   }
 

domains-Task/.jvm/src/test/scala/com/thoughtworks/dsl/domains/taskSpec.scala

@@ -3,7 +3,6 @@ package domains
 
 import com.thoughtworks.dsl.macros.Reset
 import com.thoughtworks.dsl.macros.Reset.Default.*
-import com.thoughtworks.dsl.Dsl.{!!}
 import org.scalatest.Assertion
 import scala.language.implicitConversions
 

domains-scalaz/src/main/scala/com/thoughtworks/dsl/domains/scalaz.scala

@@ -2,7 +2,6 @@ package com.thoughtworks.dsl
 package domains
 
 import com.thoughtworks.dsl.Dsl
-import com.thoughtworks.dsl.Dsl.!!
 
 import scala.language.higherKinds
 import scala.language.implicitConversions
@@ -217,7 +216,7 @@ object scalaz extends scalaz.LowPriority0 {
       lift: Dsl.Lift[G[A], F[A]]
   ): Dsl.Original[Monadic[G[A]], F[B], A] =
     Dsl.Original { (keyword: Monadic[G[A]], handler: A => F[B]) =>
-      monad.bind(lift(Monadic.apply.flip(keyword)))(
+      monad.bind(lift(Monadic.flip(keyword)))(
         handler
       )
     }

domains-scalaz/src/test/scala/com/thoughtworks/dsl/domains/scalazSpec.scala

@@ -2,7 +2,7 @@ package com.thoughtworks.dsl
 package domains
 
 import com.thoughtworks.dsl.macros.Reset.Default.*
-import com.thoughtworks.dsl.Dsl.!!
+
 import _root_.scalaz.\/
 import _root_.scalaz.\/-
 import _root_.scalaz.OptionT

keywords-AsynchronousIo/src/main/scala/com/thoughtworks/dsl/keywords/AsynchronousIo.scala

@@ -4,7 +4,7 @@ import java.net.SocketAddress
 import java.nio.ByteBuffer
 import java.nio.channels._
 
-import com.thoughtworks.dsl.Dsl.{!!, IsKeyword}
+import com.thoughtworks.dsl.Dsl.IsKeyword
 
 import scala.util.control.NonFatal
 import scala.annotation.unchecked.uncheckedVariance

keywords-Await/.js/src/main/scala/com/thoughtworks/dsl/keywords/AwaitJS.scala

@@ -15,15 +15,15 @@ private trait AwaitJS { this: Await.type =>
   given [JsPromiseResult, That]: Dsl.Original[Await[
     js.Promise[JsPromiseResult]
   ], js.Promise[That], JsPromiseResult] =
-    Await.apply
+    Await
       .liftCo[[X] =>> Dsl.Original[X, js.Promise[That], JsPromiseResult]](
         Dsl.Original(_ `then` _)
       )
 
   given [JsPromiseResult, That](using ExecutionContext): Dsl.Original[Await[
     js.Promise[JsPromiseResult]
   ], Future[That], JsPromiseResult] =
-    Await.apply.liftCo[[X] =>> Dsl.Original[X, Future[That], JsPromiseResult]](
+    Await.liftCo[[X] =>> Dsl.Original[X, Future[That], JsPromiseResult]](
       Dsl.Original { (promise, handler) =>
         promise.toFuture.flatMap(handler)
       }

keywords-Await/src/main/scala/com/thoughtworks/dsl/keywords/Await.scala

@@ -113,9 +113,11 @@ import scala.language.implicitConversions
   */
 opaque type Await[+AwaitableValue] <: Dsl.Keyword.Opaque =
   Dsl.Keyword.Opaque.Of[AwaitableValue]
+@inline def Await[AwaitableValue](using
+    dummyImplicit: DummyImplicit = DummyImplicit.dummyImplicit
+): AwaitableValue =:= Await[AwaitableValue] =
+  Dsl.Keyword.Opaque.Of
 object Await extends AwaitJS {
-  @inline def apply[AwaitableValue]: AwaitableValue =:= Await[AwaitableValue] =
-    Dsl.Keyword.Opaque.Of.apply
   given [FutureResult]: IsKeyword[Await[Future[FutureResult]], FutureResult]
     with {}
 

keywords-Await/src/test/scala/com/thoughtworks/dsl/keywords/AwaitTest.scala

@@ -2,7 +2,6 @@ package com.thoughtworks.dsl
 package keywords
 
 import com.thoughtworks.dsl.macros.Reset.Default.*
-import Dsl.!!
 import Dsl.Run
 import Dsl.IsKeyword
 import keywords._, Match._
@@ -145,23 +144,23 @@ class AwaitTest extends AsyncFreeSpec with Matchers with Inside {
   "test1" in {
     val reified = reify[1](1)
     summon[reified.type <:< Typed[Suspend[Pure[1]], 1]]
-    Suspend.apply.flip(Typed.apply.flip(reified))() should be(1)
+    Suspend.flip(Typed.flip(reified))() should be(1)
   }
   "test2" in {
     val reified = reify[1] { 1 }
     summon[reified.type <:< Typed[Suspend[Pure[1]], 1]]
-    Suspend.apply.flip(Typed.apply.flip(reified))() should be(1)
+    Suspend.flip(Typed.flip(reified))() should be(1)
 
     val reified2 = reify[1](!reified)
     summon[reified2.type <:< Typed[Suspend[Typed[Suspend[Pure[1]], 1]], 1]]
-    Suspend.apply.flip(
-      Typed.apply.flip(Suspend.apply.flip(Typed.apply.flip(reified2))())
+    Suspend.flip(
+      Typed.flip(Suspend.flip(Typed.flip(reified2))())
     )() should be(1)
   }
   "test3" in {
     val reified = reify {}
     summon[reified.type <:< Typed[Suspend[Pure[Unit]], Unit]]
-    Suspend.apply.flip(Typed.apply.flip(reified))() should be(())
+    Suspend.flip(Typed.flip(reified))() should be(())
   }
   "test4" in {
     val reified = reify {