[base] reduce result jar size by not using empty classes as annotation targets

Author: rayrobdod

Base/src/main/scala/typeclass/Optionally.scala

@@ -1,13 +1,9 @@
 package name.rayrobdod.stringContextParserCombinator
 package typeclass
 
-import scala.annotation.nowarn
 import scala.reflect.ClassTag
 import com.eed3si9n.ifdef.ifdef
 
-@nowarn("msg=make nowarn used")
-private[typeclass] final class Optionally_MakeNowarnUsed
-
 /**
  * Describes how to represent an optional value
  *
@@ -325,13 +321,13 @@ private[typeclass] trait LowPrioBiOptionally {
 		(ctx:Ctx) => {
 			val myBindSingletonContexts = new BindSingletonContexts[Ctx, ctx.type]
 			import myBindSingletonContexts._
-			@nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
+			@annotation.nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
 			selectTermNames[Option[A]](ctx)("_root_", "scala", "None"): Ctx#Expr[Option[A]]
 		},
 		(value, ctx) => {
 			val myBindSingletonContexts = new BindSingletonContexts[Ctx, ctx.type]
 			import myBindSingletonContexts._
-			@nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
+			@annotation.nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
 			val value2: ctx.Expr[A] = value
 			val rootTree = ctx.universe.Ident(ctx.universe.TermName("_root_"))
 			val namesTree = List("scala", "Some", "apply").foldLeft[ctx.universe.Tree](rootTree)({(folding, name) => ctx.universe.Select(folding, ctx.universe.TermName(name))})

Base/src/main/scala/typeclass/Repeated.scala

@@ -1,13 +1,9 @@
 package name.rayrobdod.stringContextParserCombinator
 package typeclass
 
-import scala.annotation.nowarn
 import com.eed3si9n.ifdef.ifdef
 import scala.collection.mutable.Builder
 
-@nowarn("msg=make nowarn used")
-private[typeclass] final class Repeated_MakeNowarnUsed
-
 /**
  * Describes how to combine a homogeneous sequence of zero-or-more values.
  *
@@ -626,14 +622,14 @@ object BiRepeated extends LowPrioBiRepeated {
 				(value, ctx) => {
 					val myBindSingletonContexts = new BindSingletonContexts[Ctx, ctx.type]
 					import myBindSingletonContexts._
-					@nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
+					@annotation.nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
 					val value2 = value: ctx.Expr[List[A]]
 					select[List[A], Boolean](ctx)(value2, "nonEmpty"): Ctx#Expr[Boolean]
 				},
 				(value, ctx) => {
 					val myBindSingletonContexts = new BindSingletonContexts[Ctx, ctx.type]
 					import myBindSingletonContexts._
-					@nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
+					@annotation.nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
 					val value2 = value: ctx.Expr[List[A]]
 					(
 						select[List[A], A](ctx)(value2, "head"): Ctx#Expr[A],
@@ -644,7 +640,7 @@ object BiRepeated extends LowPrioBiRepeated {
 			(value, ctx) => {
 				val myBindSingletonContexts = new BindSingletonContexts[Ctx, ctx.type]
 				import myBindSingletonContexts._
-				@nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
+				@annotation.nowarn("msg=never used") implicit val typA2:ctx.TypeTag[A] = typA
 				val value2 = value: ctx.Expr[List[A]]
 				select[List[A], Boolean](ctx)(value2, "isEmpty"): Ctx#Expr[Boolean]
 			},

Base/src/main/scala/typeclass/Sequenced.scala

@@ -3,9 +3,6 @@ package typeclass
 
 import com.eed3si9n.ifdef.ifdef
 
-@ifdef("scalaEpochVersion:2")
-private class NoWarnAboutUnusedIfdef {}
-
 /**
  * Describes how to combine two adjacent values into one value
  *
@@ -93,6 +90,10 @@ object Sequenced extends LowPrioSequenced {
 		new Apply()
 	}
 
+	@scala.annotation.nowarn("msg=unused")
+	@ifdef("scalaEpochVersion:2")
+	private def __do_not_warn_about_unused_ifdef = 0
+
 	/**
 	 * @group Support
 	 */