Move quoted.Unpickler to correct package

compiler/src/dotty/tools/dotc/core/Definitions.scala

@@ -705,8 +705,8 @@ class Definitions {
   @tu lazy val QuotedMatchingSymClass: ClassSymbol = ctx.requiredClass("scala.quoted.matching.Sym")
   @tu lazy val TastyReflectionClass: ClassSymbol = ctx.requiredClass("scala.tasty.Reflection")
 
-  @tu lazy val Unpickler_unpickleExpr: Symbol = ctx.requiredMethod("scala.runtime.quoted.Unpickler.unpickleExpr")
-  @tu lazy val Unpickler_unpickleType: Symbol = ctx.requiredMethod("scala.runtime.quoted.Unpickler.unpickleType")
+  @tu lazy val Unpickler_unpickleExpr: Symbol = ctx.requiredMethod("scala.internal.quoted.Unpickler.unpickleExpr")
+  @tu lazy val Unpickler_unpickleType: Symbol = ctx.requiredMethod("scala.internal.quoted.Unpickler.unpickleType")
 
   @tu lazy val EqlClass: ClassSymbol = ctx.requiredClass("scala.Eql")
     def Eql_eqlAny(implicit ctx: Context): TermSymbol = EqlClass.companionModule.requiredMethod(nme.eqlAny)

compiler/src/dotty/tools/dotc/core/quoted/PickledQuotes.scala

@@ -22,7 +22,7 @@ import dotty.tools.tasty.TastyString
 import scala.internal.quoted._
 import scala.reflect.ClassTag
 
-import scala.runtime.quoted.Unpickler._
+import scala.internal.quoted.Unpickler._
 
 object PickledQuotes {
   import tpd._

compiler/src/dotty/tools/dotc/core/tasty/TastyString.scala

@@ -4,7 +4,7 @@ import java.io._
 import java.util.Base64
 import java.nio.charset.StandardCharsets.UTF_8
 
-import scala.runtime.quoted.Unpickler.PickledQuote
+import scala.internal.quoted.Unpickler.PickledQuote
 
 /** Utils for String representation of TASTY */
 object TastyString {

compiler/src/dotty/tools/dotc/tastyreflect/ReflectionCompilerInterface.scala

@@ -15,7 +15,7 @@ import dotty.tools.dotc.tastyreflect.FromSymbol.{definitionFromSym, packageDefFr
 import dotty.tools.dotc.typer.Implicits.{AmbiguousImplicits, DivergingImplicit, NoMatchingImplicits, SearchFailure, SearchFailureType}
 import dotty.tools.dotc.util.{SourceFile, SourcePosition, Spans}
 
-import scala.runtime.quoted.Unpickler
+import scala.internal.quoted.Unpickler
 import scala.tasty.reflect.CompilerInterface
 
 import scala.tasty.reflect.IsInstanceOf

library/src/scala/internal/quoted/Unpickler.scala

@@ -0,0 +1,24 @@
+package scala.internal.quoted
+
+import scala.quoted.{Expr, QuoteContext, Type}
+
+/** Provides methods to unpickle `Expr` and `Type` trees. */
+object Unpickler {
+
+  type PickledQuote = List[String]
+  type PickledExprArgs = Seq[Seq[Any] => (((given QuoteContext) => Expr[Any]) | Type[_])]
+  type PickledTypeArgs = Seq[Seq[Any] => Type[_]]
+
+  /** Unpickle `repr` which represents a pickled `Expr` tree,
+   *  replacing splice nodes with `args`
+   */
+  def unpickleExpr[T](repr: PickledQuote, args: PickledExprArgs): (given QuoteContext) => Expr[T] =
+    summon[QuoteContext].tasty.internal.unpickleExpr(repr, args).asInstanceOf[Expr[T]]
+
+  /** Unpickle `repr` which represents a pickled `Type` tree,
+   *  replacing splice nodes with `args`
+   */
+  def unpickleType[T](repr: PickledQuote, args: PickledTypeArgs): (given QuoteContext) => Type[T] =
+    summon[QuoteContext].tasty.internal.unpickleType(repr, args).asInstanceOf[Type[T]]
+
+}

library/src/scala/runtime/quoted/Unpickler.scala

@@ -1,8 +1,10 @@
-package scala.runtime.quoted // TODO move to scala.internal.quoted
+// TODO remove when reference compiler is updated
+package scala.runtime.quoted
 
 import scala.quoted.{Expr, QuoteContext, Type}
 
 /** Provides methods to unpickle `Expr` and `Type` trees. */
+@deprecated("Use scala.internal.quoted.Unpickler", "0.22.0")
 object Unpickler {
 
   type PickledQuote = List[String]

library/src/scala/tasty/reflect/CompilerInterface.scala

@@ -2,7 +2,7 @@ package scala.tasty.reflect // TODO move to scala.internal.tasty.reflect
 
 import scala.quoted.QuoteContext
 import scala.tasty.Reflection
-import scala.runtime.quoted.Unpickler
+import scala.internal.quoted.Unpickler
 
 /** Tasty reflect abstract types
  *