Make namePos a member of memberDef

That way it can be accessed by other parts which deal with
error messages.

Author: odersky

src/dotty/tools/dotc/ast/Trees.scala

@@ -297,6 +297,20 @@ object Trees {
     }
 
     protected def setMods(mods: untpd.Modifiers) = myMods = mods
+
+    /** The position of the name defined by this definition.
+     *  This is a point position if the definition is synthetic, or a range position
+     *  if the definition comes from source.
+     *  It might also be that the definition does not have a position (for instance when synthesized by
+     *  a calling chain from `viewExists`), in that case the return position is NoPosition.
+     */
+    def namePos =
+      if (pos.exists)
+        if (rawMods.is(Synthetic)) Position(pos.point, pos.point)
+        else Position(pos.point, pos.point + name.length, pos.point)
+      else pos
+
+
   }
 
   /** A ValDef or DefDef tree */

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

@@ -731,7 +731,10 @@ class TreeUnpickler(reader: TastyReader, tastyName: TastyName.Table) {
       val mods =
         if (sym.annotations.isEmpty) untpd.EmptyModifiers
         else untpd.Modifiers(annotations = sym.annotations.map(_.tree))
-      tree.withMods(mods) // record annotations in tree so that tree positions can be filled in.
+      tree.withMods(mods)
+        // record annotations in tree so that tree positions can be filled in.
+        // Note: Once the inline PR with its changes to positions is in, this should be
+        // no longer necessary.
       goto(end)
       setPos(start, tree)
     }

src/dotty/tools/dotc/typer/Namer.scala

@@ -274,25 +274,14 @@ class Namer { typer: Typer =>
 
     val inSuperCall = if (ctx.mode is Mode.InSuperCall) InSuperCall else EmptyFlags
 
-    /** The position of the name defined by `tree`
-     *  This is a point position if tree is synthetic, a range position if it comes from source.
-     *  It might also be that tree does not have a position (for instance when synthesized by
-     *  a calling chain from `viewExists`), in that case the return position is NoPosition.
-     */
-    def namePos(tree: MemberDef) =
-      if (tree.pos.exists)
-        if (tree.mods.is(Synthetic)) Position(tree.pos.point, tree.pos.point)
-        else Position(tree.pos.point, tree.pos.point + tree.name.length, tree.pos.point)
-      else tree.pos
-
     tree match {
       case tree: TypeDef if tree.isClassDef =>
         val name = checkNoConflict(tree.name.encode).asTypeName
         val flags = checkFlags(tree.mods.flags &~ Implicit)
         val cls = recordSym(ctx.newClassSymbol(
           ctx.owner, name, flags | inSuperCall,
           cls => adjustIfModule(new ClassCompleter(cls, tree)(ctx), tree),
-          privateWithinClass(tree.mods), namePos(tree), ctx.source.file), tree)
+          privateWithinClass(tree.mods), tree.namePos, ctx.source.file), tree)
         cls.completer.asInstanceOf[ClassCompleter].init()
         cls
       case tree: MemberDef =>
@@ -327,7 +316,7 @@ class Namer { typer: Typer =>
         recordSym(ctx.newSymbol(
           ctx.owner, name, flags | deferred | method | higherKinded | inSuperCall1,
           adjustIfModule(completer, tree),
-          privateWithinClass(tree.mods), namePos(tree)), tree)
+          privateWithinClass(tree.mods), tree.namePos), tree)
       case tree: Import =>
         recordSym(ctx.newSymbol(
           ctx.owner, nme.IMPORT, Synthetic, new Completer(tree), NoSymbol, tree.pos), tree)