math with gfcc

examples/tutorial/embedded/Makefile_gfcc

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+all: gf hs run
+
+gf:
+	echo "pm -printer=gfcc | wf math.gfcc" | gf MathEng.gf MathFre.gf
+
+hs: gf
+	echo "pg -printer=gfcc_haskell | wf GSyntax.hs" | gf MathEng.gf MathFre.gf
+
+run: hs
+	ghc --make -o ./mathc TransferLoopGFCC.hs
+	strip mathc
+
+clean: 
+	rm -f *.gfc *.gfr *.o *.hi
+
+distclean:
+	rm -f GSyntax.hs math math.gfcc *.gfc *.gfr *.o *.hi
+

examples/tutorial/embedded/TransferDefGFCC.hs

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+module TransferDefGFCC where
+
+import GF.Canon.GFCC.GFCCAPI (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/TransferLoopGFCC.hs

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+module Main where
+
+import GF.Canon.GFCC.GFCCAPI
+import TransferDefGFCC (transfer)
+
+main :: IO () 
+main = do
+  gr <- file2grammar "math.gfcc"
+  loop (translate transfer gr)
+
+loop :: (String -> String) -> IO ()
+loop trans = do 
+  s <- getLine
+  if s == "quit" then putStrLn "bye" else do  
+    putStrLn $ trans s
+    loop trans
+
+translate :: (Tree -> Tree) -> MultiGrammar -> String -> String
+translate tr gr = unlines . map transLine . lines where
+  transLine s = case parseAllLang gr "Question" s of
+    (lg,t:_):_ -> linearize gr lg (tr t)
+    _ -> "NO PARSE"
+