Added testing hooks for unpickler

New option -Ytest-pickler compares trees before and after pickling.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/dotty/tools/dotc/core/pickling/TastyPrinter.scala b/src/dotty/tools/dotc/core/pickling/TastyPrinter.scala
index 83b53abb3..c36083b98 100644
--- a/src/dotty/tools/dotc/core/pickling/TastyPrinter.scala
+++ b/src/dotty/tools/dotc/core/pickling/TastyPrinter.scala
@@ -7,7 +7,7 @@ import printing.Texts._
 import TastyName._
 import TastyUnpickler._
 import TastyBuffer.Addr
-import util.Positions.Position
+import util.Positions.{Position, offsetToInt}
 import collection.mutable
 
 class TastyPrinter(bytes: Array[Byte])(implicit ctx: Context) {
@@ -108,10 +108,11 @@ class TastyPrinter(bytes: Array[Byte])(implicit ctx: Context) {
 
   class PositionSectionUnpickler extends SectionUnpickler[Unit]("Positions") {
     def unpickle(reader: TastyReader, tastyName: TastyName.Table): Unit = {
+      print(s"${reader.endAddr.index - reader.currentAddr.index}")
       val (totalRange, positions) = new PositionUnpickler(reader).unpickle()
-      println(s"Positions in $totalRange:")
+      println(s" position bytes in $totalRange:")
       val sorted = positions.toSeq.sortBy(_._1.index)
-      for ((addr, pos) <- sorted) println(s"$addr: $pos")
+      for ((addr, pos) <- sorted) println(s"${addr.index}: ${offsetToInt(pos.start)} .. ${pos.end}")
     }
   }
 }
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