Only compile quoted code in bootstrapped library

This will allow changing the internal representations without having incompatibilities while bootstrapping. Currently, each time one of those occurs we duplicate the file in src-bootstrapped
and src-non-bootstrapped while losing the blame history.

Author: nicolasstucki

library/src-bootstrapped/dotty/internal/CompileTimeMacros.scala

@@ -0,0 +1,11 @@
+package dotty.internal
+
+import scala.quoted._
+
+object CompileTimeMacros:
+  def codeExpr(using qctx: QuoteContext)(sc: Expr[StringContext], args: Expr[Seq[Any]]): Expr[String] =
+    (sc, args) match
+      case (Expr.StringContext(Consts(parts)), Varargs(args2)) =>
+        Expr(StringContext(parts: _*).s(args2.map(_.show): _*))
+      case _ =>
+        qctx.throwError("compiletime.code must be used as a string interpolator `code\"...\"`")

library/src/scala/quoted/Const.scala renamed to library/src-bootstrapped/scala/quoted/Const.scala

@@ -0,0 +1,7 @@
+package dotty.internal
+
+import scala.quoted._
+
+object CompileTimeMacros:
+  def codeExpr(using qctx: QuoteContext)(sc: Expr[StringContext], args: Expr[Seq[Any]]): Expr[String] =
+    throw new Exception("Non bootstrapped library")

library/src/scala/quoted/Consts.scala renamed to library/src-bootstrapped/scala/quoted/Consts.scala

@@ -0,0 +1,5 @@
+package scala.quoted
+
+class Expr[+T] private[scala]:
+  def unseal(using qctx: QuoteContext): qctx.tasty.Term =
+    throw new Exception("Non bootstrapped library")

library/src/scala/quoted/Expr.scala renamed to library/src-bootstrapped/scala/quoted/Expr.scala

@@ -0,0 +1,11 @@
+package scala.quoted
+
+trait QuoteContext { self =>
+
+  val tasty: scala.tasty.Reflection
+
+  type Nested = QuoteContext {
+    val tasty: self.tasty.type
+  }
+
+}

library/src/scala/quoted/Lambda.scala renamed to library/src-bootstrapped/scala/quoted/Lambda.scala

@@ -0,0 +1,6 @@
+package scala.quoted
+
+class Type[T <: AnyKind] private[scala]:
+  type `$splice` = T
+  def unseal(using qctx: QuoteContext): qctx.tasty.TypeTree =
+    throw new Exception("Non bootstrapped library")

library/src/scala/quoted/Liftable.scala renamed to library/src-bootstrapped/scala/quoted/Liftable.scala

@@ -35,13 +35,8 @@ package object compiletime {
    * @note only by-name arguments will be displayed as "code".
    *       Other values may display unintutively.
    */
-  transparent inline def (inline self: StringContext) code (inline args: Any*): String = ${ codeExpr('self, 'args) }
-  private def codeExpr(using qctx: QuoteContext)(sc: Expr[StringContext], args: Expr[Seq[Any]]): Expr[String] =
-    (sc, args) match
-      case (Expr.StringContext(Consts(parts)), Varargs(args2)) =>
-        Expr(StringContext(parts: _*).s(args2.map(_.show): _*))
-      case _ =>
-        qctx.throwError("compiletime.code must be used as a string interpolator `code\"...\"`")
+  transparent inline def (inline self: StringContext) code (inline args: Any*): String =
+    ${ dotty.internal.CompileTimeMacros.codeExpr('self, 'args) }
 
   inline def constValueOpt[T]: Option[T] = ???