Merge pull request #5211 from dotty-staging/followup-5203

Followup to #5203

Author: nicolasstucki

compiler/src/dotty/tools/dotc/config/Settings.scala

@@ -193,7 +193,7 @@ object Settings {
 
   class SettingGroup {
 
-    private[this] val _allSettings: ArrayBuffer[Setting[_]] = new ArrayBuffer[Setting[_]]
+    private[this] val _allSettings = new ArrayBuffer[Setting[_]]
     def allSettings: Seq[Setting[_]] = _allSettings
 
     def defaultState: SettingsState = new SettingsState(allSettings map (_.default))

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

@@ -1952,6 +1952,7 @@ object SymDenotations {
     def apply(sym: Symbol): LazyType = this
     def apply(module: TermSymbol, modcls: ClassSymbol): LazyType = this
 
+    private[this] val NoSymbolFn = (_: Context) => NoSymbol
     private[this] var myDecls: Scope = EmptyScope
     private[this] var mySourceModuleFn: Context => Symbol = NoSymbolFn
     private[this] var myModuleClassFn: Context => Symbol = NoSymbolFn
@@ -1985,8 +1986,6 @@ object SymDenotations {
       unsupported("completerTypeParams") // should be abstract, but Scala-2 will then compute the wrong type for it
   }
 
-  val NoSymbolFn: Context => Symbol = (ctx: Context) => NoSymbol
-
   /** A missing completer */
   @sharable class NoCompleter extends LazyType {
     def complete(denot: SymDenotation)(implicit ctx: Context): Unit = unsupported("complete")

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

@@ -270,11 +270,11 @@ trait Symbols { this: Context =>
     newSymbol(cls, nme.CONSTRUCTOR, flags | Method, MethodType(paramNames, paramTypes, cls.typeRef), privateWithin, coord)
 
   /** Create an empty default constructor symbol for given class `cls`. */
-  def newDefaultConstructor(cls: ClassSymbol): Symbol =
+  def newDefaultConstructor(cls: ClassSymbol): TermSymbol =
     newConstructor(cls, EmptyFlags, Nil, Nil)
 
   /** Create a synthetic lazy implicit value */
-  def newLazyImplicit(info: Type): Symbol =
+  def newLazyImplicit(info: Type): TermSymbol =
     newSymbol(owner, LazyImplicitName.fresh(), Lazy, info)
 
   /** Create a symbol representing a selftype declaration for class `cls`. */
@@ -308,7 +308,7 @@ trait Symbols { this: Context =>
   /** Create a new skolem symbol. This is not the same as SkolemType, even though the
    *  motivation (create a singleton referencing to a type) is similar.
    */
-  def newSkolem(tp: Type): Symbol = newSymbol(defn.RootClass, nme.SKOLEM, SyntheticArtifact | NonMember | Permanent, tp)
+  def newSkolem(tp: Type): TermSymbol = newSymbol(defn.RootClass, nme.SKOLEM, SyntheticArtifact | NonMember | Permanent, tp)
 
   def newErrorSymbol(owner: Symbol, name: Name, msg: => Message): Symbol = {
     val errType = ErrorType(msg)

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

@@ -656,8 +656,7 @@ class TreePickler(pickler: TastyPickler) {
       // Such annotations will be reconstituted when unpickling the child class.
       // See tests/pickling/i3149.scala
     case _ =>
-      if (Inliner.typedInline) ann.symbol == defn.BodyAnnot // inline bodies are reconstituted automatically when unpickling
-      else false
+      ann.symbol == defn.BodyAnnot // inline bodies are reconstituted automatically when unpickling
   }
 
   def pickleAnnotation(owner: Symbol, ann: Annotation)(implicit ctx: Context): Unit =

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

@@ -22,7 +22,6 @@ import core.quoted.PickledQuotes
 import scala.quoted
 import scala.quoted.Types.TreeType
 import scala.quoted.Exprs.TastyTreeExpr
-import typer.Inliner.typedInline
 
 import scala.annotation.internal.sharable
 
@@ -555,7 +554,7 @@ class TreeUnpickler(reader: TastyReader,
         sym.completer.withDecls(newScope)
         forkAt(templateStart).indexTemplateParams()(localContext(sym))
       }
-      else if (typedInline && sym.isInlineMethod)
+      else if (sym.isInlineMethod)
         sym.addAnnotation(LazyBodyAnnotation { ctx0 =>
           implicit val ctx: Context = localContext(sym)(ctx0).addMode(Mode.ReadPositions)
             // avoids space leaks by not capturing the current context
@@ -643,14 +642,9 @@ class TreeUnpickler(reader: TastyReader,
         val lazyAnnotTree = readLaterWithOwner(end, rdr => ctx => rdr.readTerm()(ctx))
 
         owner =>
-          if (tp.isRef(defn.BodyAnnot)) {
-            assert(!typedInline)
-            LazyBodyAnnotation(implicit ctx => lazyAnnotTree(owner).complete)
-          }
-          else
-            Annotation.deferredSymAndTree(
-              implicit ctx => tp.typeSymbol,
-              implicit ctx => lazyAnnotTree(owner).complete)
+          Annotation.deferredSymAndTree(
+            implicit ctx => tp.typeSymbol,
+            implicit ctx => lazyAnnotTree(owner).complete)
     }
 
     /** Create symbols for the definitions in the statement sequence between
@@ -749,7 +743,7 @@ class TreeUnpickler(reader: TastyReader,
       def readRhs(implicit ctx: Context) =
         if (nothingButMods(end))
           EmptyTree
-        else if (sym.isInlineMethod && typedInline)
+        else if (sym.isInlineMethod)
           // The body of an inline method is stored in an annotation, so no need to unpickle it again
           new Trees.Lazy[Tree] {
             def complete(implicit ctx: Context) = typer.Inliner.bodyToInline(sym)

compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala

@@ -758,7 +758,7 @@ class Scala2Unpickler(bytes: Array[Byte], classRoot: ClassDenotation, moduleClas
         TempClassInfoType(until(end, () => readTypeRef()), symScope(clazz), clazz)
       case METHODtpe | IMPLICITMETHODtpe =>
         val restpe = readTypeRef()
-        val params = until(end, () => readSymbolRef()).asInstanceOf[List[Symbol]]
+        val params = until(end, () => readSymbolRef())
         def isImplicit =
           tag == IMPLICITMETHODtpe ||
           params.nonEmpty && (params.head is Implicit)

compiler/src/dotty/tools/dotc/parsing/Scanners.scala

@@ -82,7 +82,7 @@ object Scanners {
 
     /** A character buffer for literals
       */
-    protected val litBuf: mutable.StringBuilder = new StringBuilder
+    protected val litBuf = new mutable.StringBuilder
 
     /** append Unicode character to "litBuf" buffer
       */
@@ -194,7 +194,7 @@ object Scanners {
     def getDocComment(pos: Int): Option[Comment] = docstringMap.get(pos)
 
     /** A buffer for comments */
-    private[this] val commentBuf: mutable.StringBuilder = new StringBuilder
+    private[this] val commentBuf = new mutable.StringBuilder
 
     private def handleMigration(keyword: Token): Token =
       if (!isScala2Mode) keyword

compiler/src/dotty/tools/dotc/printing/Highlighting.scala

@@ -31,7 +31,7 @@ object Highlighting {
   }
 
   case class HighlightBuffer(hl: Highlight)(implicit ctx: Context) {
-    private[this] val buffer: mutable.ListBuffer[String] = new mutable.ListBuffer[String]
+    private[this] val buffer = new mutable.ListBuffer[String]
 
     buffer += hl.show
 

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

@@ -90,7 +90,7 @@ class Erasure extends Phase with DenotTransformer {
       ref.derivedSingleDenotation(ref.symbol, transformInfo(ref.symbol, ref.symbol.info))
   }
 
-  private val eraser: Erasure.Typer = new Erasure.Typer(this)
+  private[this] val eraser = new Erasure.Typer(this)
 
   def run(implicit ctx: Context): Unit = {
     val unit = ctx.compilationUnit

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

@@ -23,8 +23,8 @@ class FunctionalInterfaces extends MiniPhase {
 
   def phaseName: String = FunctionalInterfaces.name
 
-  private val functionName: TermName = "JFunction".toTermName
-  private val functionPackage: TermName = "scala.compat.java8.".toTermName
+  private[this] val functionName = "JFunction".toTermName
+  private[this] val functionPackage = "scala.compat.java8.".toTermName
 
   override def transformClosure(tree: Closure)(implicit ctx: Context): Tree = {
     val cls = tree.tpe.widen.classSymbol.asClass