Printing

1 files changed, 13 insertions, 1 deletions

diff --git a/IO.dcl b/IO.dcl
index 3251b8d..c2634ea 100644
--- a/IO.dcl
+++ b/IO.dcl
@@ -1,3 +1,15 @@
 definition module ABC.IO
 
-:: IO
+from StdOverloaded import class toString
+
+from ABC.Nodes import ::Node
+from ABC.GraphStore import ::Desc
+from ABC.Def import ::State
+
+:: IO (:== [Char])
+
+io_init  :: IO
+io_print :: a IO -> IO | toString a
+
+show_node :: Node Desc -> String
+instance toString State