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Merge pull request #95 from haskell-servant/tvh/safeLink-92

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More strict matching for Capture (safeLink)
This commit is contained in:
Julian Arni 2015-05-27 13:27:06 +02:00
commit de813c3269
1 changed files with 3 additions and 3 deletions
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6
servant/src/Servant/Utils/Links.hs
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@ -72,8 +72,7 @@
--
-- >>> let bad_link = Proxy :: Proxy ("hello" :> Delete '[JSON] ())
-- >>> safeLink api bad_link
-- <BLANKLINE>
-- <interactive>:64:1:
-- ...
-- Could not deduce (Or
-- (IsElem' (Delete '[JSON] ()) (Get '[JSON] Int))
-- (IsElem'
@ -168,7 +167,8 @@ type family IsElem endpoint api :: Constraint where
IsElem (e :> sa) (e :> sb) = IsElem sa sb
IsElem sa (Header x :> sb) = IsElem sa sb
IsElem sa (ReqBody y x :> sb) = IsElem sa sb
IsElem (e :> sa) (Capture x y :> sb) = IsElem sa sb
IsElem (Capture z y :> sa) (Capture x y :> sb)
= IsElem sa sb
IsElem sa (QueryParam x y :> sb) = IsElem sa sb
IsElem sa (QueryParams x y :> sb) = IsElem sa sb
IsElem sa (QueryFlag x :> sb) = IsElem sa sb