Add @sharable annotation

Add @sharable annotation for classes and vals that are presumed
to be safely sharable between threads.

Also: Document CtxLazy.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/dotty/tools/dotc/parsing/Parsers.scala b/src/dotty/tools/dotc/parsing/Parsers.scala
index 2a42a7fa9..d6125f236 100644
--- a/src/dotty/tools/dotc/parsing/Parsers.scala
+++ b/src/dotty/tools/dotc/parsing/Parsers.scala
@@ -36,11 +36,11 @@ object Parsers {
     def nonePositive: Boolean = parCounts forall (_ <= 0)
   }
 
-  object Location extends Enumeration {
+  @sharable object Location extends Enumeration {
     val InParens, InBlock, InPattern, ElseWhere = Value
   }
 
-  object ParamOwner extends Enumeration {
+  @sharable object ParamOwner extends Enumeration {
     val Class, Type, TypeParam, Def = Value
   }