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-rw-r--r--src/Grasp/Interpreter.hs16
1 files changed, 14 insertions, 2 deletions
diff --git a/src/Grasp/Interpreter.hs b/src/Grasp/Interpreter.hs
index e556414..03816f6 100644
--- a/src/Grasp/Interpreter.hs
+++ b/src/Grasp/Interpreter.hs
@@ -5,7 +5,7 @@ module Grasp.Interpreter (
import Data.Graph.Inductive.Graph( Node, LNode, LEdge, (&) )
import qualified Data.Graph.Inductive.Graph as Graph
-import qualified Data.Set as Set
+import Data.List
import Grasp.Types
import Grasp.Parser
@@ -24,7 +24,19 @@ grasp g =
reachable :: GraspProgram -> [IP] -> [Node]
-reachable g ips = Graph.nodes g
+reachable g ips =
+ let startNodes = nub . (map fst) $ (namedNodes g) ++ (concat ips)
+ in reach g startNodes []
+
+
+
+reach :: GraspProgram -> [Node] -> [Node] -> [Node]
+reach _ [] f = f
+reach g s@(x:xs) f =
+ let f' = nub (x:f)
+ s' = nub (xs ++ (Graph.suc g x))
+ g' = Graph.delNode x g
+ in reach g' s' f'