1 files changed, 7 insertions, 2 deletions
diff --git a/stream.sig b/stream.sig
index e3c63d9..1307a60 100644
--- a/stream.sig
+++ b/stream.sig
@@ -32,13 +32,18 @@ signature STREAM = sig
   val pposWithoutCol: ppos -> ppos
 
   val getSubstr: fileOffset -> fileOffset -> t -> string
+  val getFname: t -> string
   val isFirstOnLine: pos -> t -> bool
 
-  (* throws IO.Io *)
+  (* both throw IO.Io *)
   val create: string -> t
+  val createFromInstream: string -> TextIO.instream -> t
 
   val pposCacheInit: fileInfo -> pposCache
-  val pposCacheAdvance: pos -> pposCache -> (int * int) * pposCache
+
+  val pposCacheGetId: pposCache -> fileId
   val pposCacheGetLine: pposCache -> int
   val pposCacheGetFname:  pposCache -> string
+
+  val pposCacheAdvance: pos -> pposCache -> (int * int) * pposCache
 end