1 files changed, 32 insertions, 0 deletions
diff --git a/src/GF/Grammar/ReservedWords.hs b/src/GF/Grammar/ReservedWords.hs
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index 000000000..43738989f
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+++ b/src/GF/Grammar/ReservedWords.hs
@@ -0,0 +1,32 @@
+module ReservedWords (isResWord, isResWordGFC) where
+
+import List
+
+-- reserved words of GF. (c) Aarne Ranta 19/3/2002 under Gnu GPL
+-- modified by Markus Forsberg 9/4. 
+-- modified by AR 12/6/2003 for GF2 and GFC
+
+
+isResWord :: String -> Bool
+isResWord s = isInTree s resWordTree
+
+resWordTree :: BTree
+resWordTree = 
+--  mapTree fst $ sorted2tree $ flip zip (repeat ()) $ sort allReservedWords
+    B "let" (B "concrete" (B "Tok" (B "Str" (B "PType" (B "Lin" N N) N) (B "Strs" N N)) (B "case" (B "abstract" (B "Type" N N) N) (B "cat" N N))) (B "fun" (B "flags" (B "def" (B "data" N N) N) (B "fn" N N)) (B "in" (B "grammar" N N) (B "include" N N)))) (B "pattern" (B "of" (B "lindef" (B "lincat" (B "lin" N N) N) (B "lintype" N N)) (B "out" (B "oper" (B "open" N N) N) (B "param" N N))) (B "strs" (B "resource" (B "printname" (B "pre" N N) N) (B "reuse" N N)) (B "transfer" (B "table" N N) (B "variants" N N))))
+
+
+isResWordGFC :: String -> Bool
+isResWordGFC s = isInTree s $
+  B "of" (B "fun" (B "concrete" (B "cat" (B "abstract" N N) N) (B "flags" N N)) (B "lin" (B "in" N N) (B "lincat" N N))) (B "resource" (B "param" (B "oper" (B "open" N N) N) (B "pre" N N)) (B "table" (B "strs" N N) (B "variants" N N)))
+
+data BTree = N | B String BTree BTree deriving (Show)
+
+isInTree :: String -> BTree -> Bool
+isInTree x tree = case tree of
+ N -> False
+ B a left right 
+   | x < a  -> isInTree x left
+   | x > a  -> isInTree x right
+   | x == a -> True
+