# define IF_NOT_GHC(a) {--}
#else
# define panic error
-# define TAG_ _CMP_TAG
-# define LT_ _LT
-# define EQ_ _EQ
-# define GT_ _GT
+# define TAG_ Ordering
+# define LT_ LT
+# define EQ_ EQ
+# define GT_ GT
+# define _LT LT
+# define _EQ EQ
+# define _GT GT
# define GT__ _
-# define tagCmp_ _tagCmp
+# define tagCmp_ compare
+# define _tagCmp compare
# define FAST_STRING String
# define ASSERT(x) {-nothing-}
# define IF_NOT_GHC(a) a
IF_NOT_GHC(forall COMMA exists COMMA)
zipEqual, zipWithEqual, zipWith3Equal, zipWith4Equal,
zipLazy,
- mapAndUnzip,
+ mapAndUnzip, mapAndUnzip3,
nOfThem, lengthExceeds, isSingleton,
- startsWith, endsWith,
#if defined(COMPILING_GHC)
+ startsWith, endsWith,
isIn, isn'tIn,
#endif
mapAccumL, mapAccumR, mapAccumB,
-- comparisons
+#if defined(COMPILING_GHC)
Ord3(..), thenCmp, cmpList,
- IF_NOT_GHC(cmpString COMMA)
-#ifdef USE_FAST_STRINGS
cmpPString,
#else
- substr,
+ cmpString,
#endif
+
-- pairs
IF_NOT_GHC(cfst COMMA applyToPair COMMA applyToFst COMMA)
IF_NOT_GHC(applyToSnd COMMA foldPair COMMA)
, assertPanic
#endif {- COMPILING_GHC -}
- -- and to make the interface self-sufficient...
-#if __HASKELL1__ < 3
-# if defined(COMPILING_GHC)
- , Maybe(..){-.. for pragmas...-}, PrettyRep, Pretty(..)
-# else
- , Maybe
-# endif
-#endif
-
) where
#if defined(COMPILING_GHC)
CHK_Ubiq() -- debugging consistency check
+IMPORT_1_3(List(zipWith4))
import Pretty
+#else
+import List(zipWith4)
#endif
-#if __HASKELL1__ < 3
-import Maybes ( Maybe(..) )
-#endif
+
+infixr 9 `thenCmp`
\end{code}
%************************************************************************
DEBUGging on; hey, why not?
\begin{code}
-zipEqual :: [a] -> [b] -> [(a,b)]
-zipWithEqual :: (a->b->c) -> [a]->[b]->[c]
-zipWith3Equal :: (a->b->c->d) -> [a]->[b]->[c]->[d]
-zipWith4Equal :: (a->b->c->d->e) -> [a]->[b]->[c]->[d]->[e]
+zipEqual :: String -> [a] -> [b] -> [(a,b)]
+zipWithEqual :: String -> (a->b->c) -> [a]->[b]->[c]
+zipWith3Equal :: String -> (a->b->c->d) -> [a]->[b]->[c]->[d]
+zipWith4Equal :: String -> (a->b->c->d->e) -> [a]->[b]->[c]->[d]->[e]
#ifndef DEBUG
-zipEqual = zip
-zipWithEqual = zipWith
-zipWith3Equal = zipWith3
-zipWith4Equal = zipWith4
+zipEqual _ = zip
+zipWithEqual _ = zipWith
+zipWith3Equal _ = zipWith3
+zipWith4Equal _ = zipWith4
#else
-zipEqual [] [] = []
-zipEqual (a:as) (b:bs) = (a,b) : zipEqual as bs
-zipEqual as bs = panic "zipEqual: unequal lists"
-
-zipWithEqual z (a:as) (b:bs) = z a b : zipWithEqual z as bs
-zipWithEqual _ [] [] = []
-zipWithEqual _ _ _ = panic "zipWithEqual: unequal lists"
-
-zipWith3Equal z (a:as) (b:bs) (c:cs)
- = z a b c : zipWith3Equal z as bs cs
-zipWith3Equal _ [] [] [] = []
-zipWith3Equal _ _ _ _ = panic "zipWith3Equal: unequal lists"
-
-zipWith4Equal z (a:as) (b:bs) (c:cs) (d:ds)
- = z a b c d : zipWith4Equal z as bs cs ds
-zipWith4Equal _ [] [] [] [] = []
-zipWith4Equal _ _ _ _ _ = panic "zipWith4Equal: unequal lists"
+zipEqual msg [] [] = []
+zipEqual msg (a:as) (b:bs) = (a,b) : zipEqual msg as bs
+zipEqual msg as bs = panic ("zipEqual: unequal lists:"++msg)
+
+zipWithEqual msg z (a:as) (b:bs)= z a b : zipWithEqual msg z as bs
+zipWithEqual msg _ [] [] = []
+zipWithEqual msg _ _ _ = panic ("zipWithEqual: unequal lists:"++msg)
+
+zipWith3Equal msg z (a:as) (b:bs) (c:cs)
+ = z a b c : zipWith3Equal msg z as bs cs
+zipWith3Equal msg _ [] [] [] = []
+zipWith3Equal msg _ _ _ _ = panic ("zipWith3Equal: unequal lists:"++msg)
+
+zipWith4Equal msg z (a:as) (b:bs) (c:cs) (d:ds)
+ = z a b c d : zipWith4Equal msg z as bs cs ds
+zipWith4Equal msg _ [] [] [] [] = []
+zipWith4Equal msg _ _ _ _ _ = panic ("zipWith4Equal: unequal lists:"++msg)
#endif
\end{code}
(rs1, rs2) = mapAndUnzip f xs
in
(r1:rs1, r2:rs2)
+
+mapAndUnzip3 :: (a -> (b, c, d)) -> [a] -> ([b], [c], [d])
+
+mapAndUnzip3 f [] = ([],[],[])
+mapAndUnzip3 f (x:xs)
+ = let
+ (r1, r2, r3) = f x
+ (rs1, rs2, rs3) = mapAndUnzip3 f xs
+ in
+ (r1:rs1, r2:rs2, r3:rs3)
\end{code}
\begin{code}
startsWith [] str = Just str
startsWith (c:cs) (s:ss)
= if c /= s then Nothing else startsWith cs ss
+startsWith _ [] = Nothing
endsWith cs ss
= case (startsWith (reverse cs) (reverse ss)) of
-> [a] -- The transitive closure
transitiveClosure succ eq xs
- = do [] xs
+ = go [] xs
where
- do done [] = done
- do done (x:xs) | x `is_in` done = do done xs
- | otherwise = do (x:done) (succ x ++ xs)
+ go done [] = done
+ go done (x:xs) | x `is_in` done = go done xs
+ | otherwise = go (x:done) (succ x ++ xs)
x `is_in` [] = False
x `is_in` (y:ys) | eq x y = True
cmpString [] ys = LT_
cmpString xs [] = GT_
+#ifdef COMPILING_GHC
cmpString _ _ = panic# "cmpString"
+#else
+cmpString _ _ = error "cmpString"
+#endif
\end{code}
\begin{code}
-#ifdef USE_FAST_STRINGS
cmpPString :: FAST_STRING -> FAST_STRING -> TAG_
cmpPString x y
= case (_tagCmp x y) of { _LT -> LT_ ; _EQ -> EQ_ ; _GT -> GT_ }
-#endif
-\end{code}
-
-\begin{code}
-#ifndef USE_FAST_STRINGS
-substr :: FAST_STRING -> Int -> Int -> FAST_STRING
-
-substr str beg end
- = ASSERT (beg >= 0 && beg <= end)
- take (end - beg + 1) (drop beg str)
-#endif
\end{code}
%************************************************************************
panic x = error ("panic! (the `impossible' happened):\n\t"
++ x ++ "\n\n"
++ "Please report it as a compiler bug "
- ++ "to glasgow-haskell-bugs@dcs.glasgow.ac.uk.\n\n" )
+ ++ "to glasgow-haskell-bugs@dcs.gla.ac.uk.\n\n" )
pprPanic heading pretty_msg = panic (heading++(ppShow 80 pretty_msg))
pprError heading pretty_msg = error (heading++(ppShow 80 pretty_msg))
+#if __GLASGOW_HASKELL__ >= 200
+pprTrace heading pretty_msg = GHCbase.trace (heading++(ppShow 80 pretty_msg))
+#else
pprTrace heading pretty_msg = trace (heading++(ppShow 80 pretty_msg))
+#endif
-- #-versions because panic can't return an unboxed int, and that's
-- what TAG_ is with GHC at the moment. Ugh. (Simon)
projects / ghc-hetmet.git / blobdiff