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extending proto resource API

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aarne
2005-11-23 21:38:11 +00:00
parent fe0408c9a4
commit 2f8514e54a
1 changed files with 4 additions and 1 deletions
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5
src/GF/Formalism/SimpleGFC.hs
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@@ -179,13 +179,16 @@ Path path ++. lbl = Path (Left lbl : path)
(++!) :: Path c t -> Term c t -> Path c t
Path path ++! sel = Path (Right sel : path)
lintypeFollowPath :: Path c t -> LinType c t -> LinType c t
lintypeFollowPath :: (Show c,Show t) => Path c t -> LinType c t -> LinType c t
lintypeFollowPath (Path path) = follow path
where follow [] ctype = ctype
follow (Right pat : path) (TblT _ ctype) = follow path ctype
follow (Left lbl : path) (RecT rec)
= maybe err (follow path) $ lookup lbl rec
where err = error $ "lintypeFollowPath: label not in record type"
++ "\n" ++ show lbl
++ "\n" ++ show rec
--- by AR for debugging 23/11/2005
termFollowPath :: (Eq c, Eq t) => Path c t -> Term c t -> Term c t
termFollowPath (Path path) = follow (reverse path)