GNode and GEdge types now have their own files... again...

1 files changed, 58 insertions, 0 deletions

diff --git a/src/Grasp/GEdge.hs b/src/Grasp/GEdge.hs
new file mode 100644
index 0000000..fcd826a
--- /dev/null
+++ b/src/Grasp/GEdge.hs
@@ -0,0 +1,58 @@
+module Grasp.GEdge (
+	GEdge,
+	EdgeLabel,
+
+	mkGEdge,
+	mkLabel,
+
+	toSrc,
+	toDest,
+	toLabel,
+	toLEdge
+	) where
+
+
+
+
+import Grasp.Graph( Node, LEdge )
+
+
+
+
+newtype EdgeLabel = EdgeLabel String
+    deriving (Show, Eq)
+
+newtype GEdge = GEdge (LEdge EdgeLabel)
+    deriving (Show, Eq)
+
+
+
+
+mkGEdge :: LEdge EdgeLabel -> GEdge
+mkGEdge = GEdge
+
+
+
+mkLabel :: String -> EdgeLabel
+mkLabel = EdgeLabel
+
+
+
+toSrc :: GEdge -> String
+toSrc (GEdge (x,_,_)) = x
+
+
+
+toDest :: GEdge -> String
+toDest (GEdge (_,y,_)) = y
+
+
+
+toLabel :: GEdge -> EdgeLabel
+toLabel (GEdge (_,_,z)) = z
+
+
+
+toLEdge :: GEdge -> LEdge EdgeLabel
+toLEdge (GEdge e) = e
+