Remove PickledQuote and TastyString from library

Author: nicolasstucki

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

@@ -796,8 +796,10 @@ class Definitions {
 
   @tu lazy val QuoteContextClass: ClassSymbol = requiredClass("scala.quoted.QuoteContext")
   @tu lazy val QuoteContextInternalClass: ClassSymbol = requiredClass("scala.internal.quoted.QuoteContextInternal")
-    @tu lazy val QuoteContextInternalClass_ExprMatch: Symbol = QuoteContextInternalClass.requiredMethod("ExprMatch")
-    @tu lazy val QuoteContextInternalClass_TypeMatch: Symbol = QuoteContextInternalClass.requiredMethod("TypeMatch")
+    @tu lazy val QuoteContextInternal_unpickleExpr: Symbol = QuoteContextInternalClass.requiredMethod("unpickleExpr")
+    @tu lazy val QuoteContextInternal_unpickleType: Symbol = QuoteContextInternalClass.requiredMethod("unpickleType")
+    @tu lazy val QuoteContextInternal_ExprMatch: Symbol = QuoteContextInternalClass.requiredMethod("ExprMatch")
+    @tu lazy val QuoteContextInternal_TypeMatch: Symbol = QuoteContextInternalClass.requiredMethod("TypeMatch")
 
   @tu lazy val LiftableModule: Symbol = requiredModule("scala.quoted.Liftable")
     @tu lazy val LiftableModule_BooleanLiftable: Symbol = LiftableModule.requiredMethod("BooleanLiftable")
@@ -831,8 +833,6 @@ class Definitions {
 
   @tu lazy val TastyReflectionClass: ClassSymbol = requiredClass("scala.tasty.Reflection")
 
-  @tu lazy val PickledQuote_make: Symbol = requiredMethod("scala.internal.quoted.PickledQuote.make")
-
   @tu lazy val EqlClass: ClassSymbol = requiredClass("scala.Eql")
     def Eql_eqlAny(using Context): TermSymbol = EqlClass.companionModule.requiredMethod(nme.eqlAny)
 

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

@@ -19,7 +19,6 @@ import dotty.tools.dotc.report
 
 import scala.reflect.ClassTag
 
-import scala.internal.quoted.PickledQuote
 import scala.quoted.QuoteContext
 import scala.collection.mutable
 
@@ -34,7 +33,7 @@ object PickledQuotes {
     else {
       assert(!tree.isInstanceOf[Hole]) // Should not be pickled as it represents `'{$x}` which should be optimized to `x`
       val pickled = pickle(tree)
-      scala.internal.quoted.TastyString.pickle(pickled)
+      TastyString.pickle(pickled)
     }
 
   /** Transform the expression into its fully spliced Tree */
@@ -52,25 +51,23 @@ object PickledQuotes {
   }
 
   /** Unpickle the tree contained in the TastyExpr */
-  def unpickleTerm(pickledQuote: PickledQuote)(using Context): Tree = {
-    val unpickled = withMode(Mode.ReadPositions)(
-      unpickle(pickledQuote, isType = false))
+  def unpickleTerm(pickled: List[String], fillHole: Seq[Seq[Any] => Any])(using Context): Tree = {
+    val unpickled = withMode(Mode.ReadPositions)(unpickle(pickled, isType = false))
     val Inlined(call, Nil, expnasion) = unpickled
     val inlineCtx = inlineContext(call)
-    val expansion1 = spliceTypes(expnasion, pickledQuote)(using inlineCtx)
-    val expansion2 = spliceTerms(expansion1, pickledQuote)(using inlineCtx)
+    val expansion1 = spliceTypes(expnasion, fillHole)(using inlineCtx)
+    val expansion2 = spliceTerms(expansion1, fillHole)(using inlineCtx)
     cpy.Inlined(unpickled)(call, Nil, expansion2)
   }
 
   /** Unpickle the tree contained in the TastyType */
-  def unpickleTypeTree(pickledQuote: PickledQuote)(using Context): Tree = {
-    val unpickled = withMode(Mode.ReadPositions)(
-      unpickle(pickledQuote, isType = true))
-    spliceTypes(unpickled, pickledQuote)
+  def unpickleTypeTree(pickled: List[String], fillHole: Seq[Seq[Any] => Any])(using Context): Tree = {
+    val unpickled = withMode(Mode.ReadPositions)(unpickle(pickled, isType = true))
+    spliceTypes(unpickled, fillHole)
   }
 
   /** Replace all term holes with the spliced terms */
-  private def spliceTerms(tree: Tree, pickledQuote: PickledQuote)(using Context): Tree = {
+  private def spliceTerms(tree: Tree, fillHole: Seq[Seq[Any] => Any])(using Context): Tree = {
     val evaluateHoles = new TreeMap {
       override def transform(tree: tpd.Tree)(using Context): tpd.Tree = tree match {
         case Hole(isTerm, idx, args) =>
@@ -79,7 +76,7 @@ object PickledQuotes {
             else new scala.internal.quoted.Type(arg, QuoteContextImpl.scopeId)
           }
           if isTerm then
-            val quotedExpr = pickledQuote.exprSplice(idx)(reifiedArgs)(dotty.tools.dotc.quoted.QuoteContextImpl())
+            val quotedExpr = fillHole(idx)(reifiedArgs).asInstanceOf[QuoteContext => scala.quoted.Expr[Any]](dotty.tools.dotc.quoted.QuoteContextImpl())
             val filled = PickledQuotes.quotedExprToTree(quotedExpr)
 
             // We need to make sure a hole is created with the source file of the surrounding context, even if
@@ -89,7 +86,7 @@ object PickledQuotes {
           else
             // Replaces type holes generated by ReifyQuotes (non-spliced types).
             // These are types defined in a quote and used at the same level in a nested quote.
-            val quotedType = pickledQuote.typeSplice(idx)(reifiedArgs)
+            val quotedType = fillHole(idx)(reifiedArgs).asInstanceOf[scala.quoted.Type[?]]
             PickledQuotes.quotedTypeToTree(quotedType)
         case tree: Select =>
           // Retain selected members
@@ -124,15 +121,15 @@ object PickledQuotes {
   }
 
   /** Replace all type holes generated with the spliced types */
-  private def spliceTypes(tree: Tree, pickledQuote: PickledQuote)(using Context): Tree = {
+  private def spliceTypes(tree: Tree, fillHole: Seq[Seq[Any] => Any])(using Context): Tree = {
     tree match
       case Block(stat :: rest, expr1) if stat.symbol.hasAnnotation(defn.InternalQuoted_QuoteTypeTagAnnot) =>
         val typeSpliceMap = (stat :: rest).iterator.map {
           case tdef: TypeDef =>
             assert(tdef.symbol.hasAnnotation(defn.InternalQuoted_QuoteTypeTagAnnot))
             val tree = tdef.rhs match
               case TypeBoundsTree(_, Hole(_, idx, args), _) =>
-                val quotedType = pickledQuote.typeSplice(idx)(args)
+                val quotedType = fillHole(idx)(args).asInstanceOf[scala.quoted.Type[?]]
                 PickledQuotes.quotedTypeToTree(quotedType)
               case TypeBoundsTree(_, tpt, _) =>
                 tpt
@@ -178,8 +175,8 @@ object PickledQuotes {
   }
 
   /** Unpickle TASTY bytes into it's tree */
-  private def unpickle(pickledQuote: PickledQuote, isType: Boolean)(using Context): Tree = {
-    val bytes = pickledQuote.bytes()
+  private def unpickle(pickled: List[String], isType: Boolean)(using Context): Tree = {
+    val bytes = TastyString.unpickle(pickled)
     quotePickling.println(s"**** unpickling quote from TASTY\n${TastyPrinter.show(bytes)}")
 
     val mode = if (isType) UnpickleMode.TypeTree else UnpickleMode.Term

compiler/src/dotty/tools/dotc/quoted/QuoteContextImpl.scala

@@ -16,7 +16,6 @@ import dotty.tools.dotc.core.Decorators._
 import scala.quoted.QuoteContext
 import dotty.tools.dotc.quoted.printers.{Extractors, SourceCode, SyntaxHighlight}
 
-import scala.internal.quoted.PickledQuote
 import scala.tasty.reflect._
 
 object QuoteContextImpl {
@@ -2631,12 +2630,12 @@ class QuoteContextImpl private (ctx: Context) extends QuoteContext, scala.intern
 
   end reflect
 
-  def unpickleExpr[T](pickledQuote: PickledQuote): scala.quoted.Expr[T] =
-    val tree = PickledQuotes.unpickleTerm(pickledQuote)(using reflect.rootContext)
+  def unpickleExpr[T](pickled: List[String], fillHole: Seq[Seq[Any] => Any]): scala.quoted.Expr[T] =
+    val tree = PickledQuotes.unpickleTerm(pickled, fillHole)(using reflect.rootContext)
     new scala.internal.quoted.Expr(tree, hash).asInstanceOf[scala.quoted.Expr[T]]
 
-  def unpickleType[T <: AnyKind](pickledQuote: PickledQuote): scala.quoted.Type[T] =
-    val tree = PickledQuotes.unpickleTypeTree(pickledQuote)(using reflect.rootContext)
+  def unpickleType[T <: AnyKind](pickled: List[String], fillHole: Seq[Seq[Any] => Any]): scala.quoted.Type[T] =
+    val tree = PickledQuotes.unpickleTypeTree(pickled, fillHole)(using reflect.rootContext)
     new scala.internal.quoted.Type(tree, hash).asInstanceOf[scala.quoted.Type[T]]
 
   object ExprMatch extends ExprMatchModule:

library/src/scala/internal/quoted/TastyString.scala renamed to compiler/src/dotty/tools/dotc/quoted/TastyString.scala

@@ -1,4 +1,4 @@
-package scala.internal.quoted
+package dotty.tools.dotc.quoted
 
 import java.io._
 import java.util.Base64

compiler/src/dotty/tools/dotc/transform/ReifyQuotes.scala

@@ -201,16 +201,14 @@ class ReifyQuotes extends MacroTransform {
        */
       def pickleAsTasty() = {
         val pickledQuoteStrings = liftList(PickledQuotes.pickleQuote(body).map(x => Literal(Constant(x))), defn.StringType)
-        // TODO: generate an instance of PickledSplices directly instead of passing through a List
         val splicesList = liftList(splices, defn.FunctionType(1).appliedTo(defn.SeqType.appliedTo(defn.AnyType), defn.AnyType))
-        val pickledQuote = ref(defn.PickledQuote_make).appliedTo(pickledQuoteStrings, splicesList)
         val quoteClass = if isType then defn.QuotedTypeClass else defn.QuotedExprClass
         val quotedType = quoteClass.typeRef.appliedTo(originalTp)
         val lambdaTpe = MethodType(defn.QuoteContextClass.typeRef :: Nil, quotedType)
         def callUnpickle(ts: List[Tree]) = {
           val qctx = ts.head.asInstance(defn.QuoteContextInternalClass.typeRef)
-          val unpickleMethName = if isType then "unpickleType" else "unpickleExpr"
-          qctx.select(unpickleMethName.toTermName).appliedToType(originalTp).appliedTo(pickledQuote)
+          val unpickleMeth = if isType then defn.QuoteContextInternal_unpickleType else defn.QuoteContextInternal_unpickleExpr
+          qctx.select(unpickleMeth).appliedToType(originalTp).appliedTo(pickledQuoteStrings, splicesList)
         }
         Lambda(lambdaTpe, callUnpickle).withSpan(body.span)
       }

compiler/src/dotty/tools/dotc/typer/QuotesAndSplices.scala

@@ -463,7 +463,7 @@ trait QuotesAndSplices {
       if (tree.quoted.isTerm) ref(defn.InternalQuoted_exprQuote.termRef).appliedToType(defn.AnyType).appliedTo(shape).select(nme.apply).appliedTo(qctx)
       else ref(defn.QuotedTypeModule_apply.termRef).appliedToTypeTree(shape).select(nme.apply).appliedTo(qctx)
 
-    val matchModule = if tree.quoted.isTerm then defn.QuoteContextInternalClass_ExprMatch else defn.QuoteContextInternalClass_TypeMatch
+    val matchModule = if tree.quoted.isTerm then defn.QuoteContextInternal_ExprMatch else defn.QuoteContextInternal_TypeMatch
     val unapplyFun = qctx.asInstance(defn.QuoteContextInternalClass.typeRef).select(matchModule).select(nme.unapply)
 
     UnApply(

library/src/scala/internal/quoted/PickledQuote.scala

@@ -2,20 +2,19 @@ package scala.internal.quoted
 
 import scala.quoted.{QuoteContext, Expr, Type}
 import scala.tasty.reflect._
-import scala.internal.quoted.PickledQuote
 
 /** Part of the QuoteContext interface that needs to be implemented by the compiler but is not visible to users */
 trait QuoteContextInternal { self: QuoteContext =>
 
   /** Unpickle `repr` which represents a pickled `Expr` tree,
    *  replacing splice nodes with `holes`
    */
-  def unpickleExpr[T](pickledQuote: PickledQuote): scala.quoted.Expr[T]
+  def unpickleExpr[T](pickled: List[String], fillHole: Seq[Seq[Any] => Any]): scala.quoted.Expr[T]
 
   /** Unpickle `repr` which represents a pickled `Type` tree,
    *  replacing splice nodes with `holes`
    */
-  def unpickleType[T <: AnyKind](pickledQuote: PickledQuote): scala.quoted.Type[T]
+  def unpickleType[T <: AnyKind](pickled: List[String], fillHole: Seq[Seq[Any] => Any]): scala.quoted.Type[T]
 
   val ExprMatch: ExprMatchModule