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Diffstat (limited to 'src/GF/Infra/CheckM.hs')
| -rw-r--r-- | src/GF/Infra/CheckM.hs | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/GF/Infra/CheckM.hs b/src/GF/Infra/CheckM.hs index efa65118b..a556e5c3a 100644 --- a/src/GF/Infra/CheckM.hs +++ b/src/GF/Infra/CheckM.hs @@ -80,9 +80,9 @@ checkGetContext = Check (\ctxt msgs -> Success ctxt ctxt msgs) checkLookup :: Ident -> Check Type checkLookup x = do co <- checkGetContext - case lookup x co of - Nothing -> checkError (text "unknown variable" <+> ppIdent x) - Just ty -> return ty + case [ty | (b,y,ty) <- co, x == y] of + [] -> checkError (text "unknown variable" <+> ppIdent x) + (ty:_) -> return ty runCheck :: Check a -> Either [Message] (a,Context,[Message]) runCheck c = |