transfer exx

examples/tutorial/embedded/Makefile

@@ -4,15 +4,15 @@ gf:
 	echo "pm | wf math.gfcm" | gf MathEng.gf MathFre.gf
 
 hs: gf
-	echo "pg -printer=haskell | wf haskell/GSyntax.hs" | gf math.gfcm
+	echo "pg -printer=haskell | wf GSyntax.hs" | gf math.gfcm
 
 run: hs
-	ghc --make -o ./math -ihaskell haskell/Run.hs
+	ghc --make -o ./math TransferLoop.hs
 	strip math
 
 clean: 
-	rm -f *.gfc *.gfr haskell/*.o haskell/*.hi
+	rm -f *.gfc *.gfr *.o *.hi
 
 distclean:
-	rm -f GSyntax.hs math math.gfcm *.gfc *.gfr haskell/*.o haskell/*.hi
+	rm -f GSyntax.hs math math.gfcm *.gfc *.gfr *.o *.hi
 

examples/tutorial/embedded/TransferDef.hs

@@ -0,0 +1,26 @@
+module TransferDef where
+
+import GF.Embed.EmbedAPI (Tree)
+import GSyntax
+
+transfer :: Tree -> Tree
+transfer = gf . answer . fg
+
+answer :: GQuestion -> GAnswer
+answer p = case p of
+  GOdd x   -> test odd x
+  GEven x  -> test even x
+  GPrime x -> test prime x
+
+value :: GObject -> Int
+value e = case e of
+  GNumber (GInt i) -> fromInteger i
+
+test :: (Int -> Bool) -> GObject -> GAnswer
+test f x = if f (value x) then GYes else GNo
+
+prime :: Int -> Bool
+prime x = elem x primes where
+  primes = sieve [2 .. x]
+  sieve (p:xs) = p : sieve [ n | n <- xs, n `mod` p > 0 ]
+  sieve [] = []

examples/tutorial/embedded/TransferLoop.hs

@@ -1,12 +1,12 @@
 module Main where
 
 import GF.Embed.EmbedAPI
-import GSyntax
+import TransferDef (transfer)
 
 main :: IO () 
 main = do
   gr <- file2grammar "math.gfcm"
-  loop (translate answerTree gr)
+  loop (translate transfer gr)
 
 loop :: (String -> String) -> IO ()
 loop trans = do 
@@ -21,21 +21,3 @@ translate tr gr = unlines . map transLine . lines where
     (lg,t:_):_ -> linearize gr lg (tr t)
     _ -> "NO PARSE"
 
-answerTree :: Tree -> Tree
-answerTree = gf . answer . fg
-
-answer :: GQuestion -> GAnswer
-answer p = case p of
-  GOdd x   -> test odd x
-  GEven x  -> test even x
-  GPrime x -> test prime x
-
-value :: GObject -> Int
-value e = case e of
-  GNumber (GInt i) -> fromInteger i
-
-test :: (Int -> Bool) -> GObject -> GAnswer
-test f x = if f (value x) then GYes else GNo
-
-prime :: Int -> Bool
-prime = (< 8) ----