forked from GitHub/gf-core
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@@ -151,7 +151,7 @@ matchPatt cs0 (FV ts) = liftM FV $ mapM (matchPatt cs0) ts
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matchPatt cs0 trm = term2patt trm >>= match cs0 where
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match cs t =
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case cs of
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Cas ps b :_ | elem t ps -> return b
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Cas ps b :_ | elem t ps -> return b
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_:cs' -> match cs' t
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[] -> Bad $ "pattern not found for" +++ prt t
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+++ "among" ++++ unlines (map prt cs0) ---- debug
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@@ -717,14 +717,14 @@ pattContext env typ p = case p of
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g1 <- pattContext env typ p
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g2 <- pattContext env typ q
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return $ g1 ++ g2
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PRep p' -> noBind p'
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PNeg p' -> noBind p'
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PRep p' -> noBind typeStr p'
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PNeg p' -> noBind typ p'
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_ -> return [] ---- check types!
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where
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cnc = env
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noBind p' = do
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co <- pattContext env typeStr p'
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noBind typ p' = do
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co <- pattContext env typ p'
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if not (null co)
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then checkWarn ("no variable bound inside pattern" +++ prt p)
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>> return []
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