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Idris HEAD seems to require some hints to make toState' and fromState' type-check #14

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Idris HEAD seems to require some hints to make toState' and fromState' type-check #14

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18 changes: 9 additions & 9 deletions IQuery/State.idr
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Original file line number Diff line number Diff line change
Expand Up @@ -91,14 +91,14 @@ access n (MkState (STList t) p) = do
pure $ Just $ MkState t r

fromState' : State t -> IO (interpSTy t)
fromState' (MkState STInt p) = mkForeign (FFun "%0.val" [FPtr] FInt) p
fromState' (MkState STString p) = mkForeign (FFun "%0.val" [FPtr] FString) p
fromState' (MkState (STMaybe a) p) = do
fromState' {t = STInt } (MkState STInt p) = mkForeign (FFun "%0.val" [FPtr] FInt) p
fromState' {t = STString } (MkState STString p) = mkForeign (FFun "%0.val" [FPtr] FString) p
fromState' {t = STMaybe a } (MkState (STMaybe a) p) = do
isNull <- (mkForeign (FFun "(%0.val == null).toString()" [FPtr] FString) p)
case isNull == "true" of
True => pure Nothing
False => pure $ Just !(fromState' (MkState a p))
fromState' (MkState (STList a) p) = do
fromState' {t = STList a } (MkState (STList a) p) = do
n <- mkForeign (FFun "%0.val.length" [FPtr] FInt) p
ps <- sequence $ map
(\n => mkForeign (FFun "%0.val[%1]" [FPtr,FInt] FPtr) p n) [0..(n-1)]
Expand All @@ -113,14 +113,14 @@ fromState (MkState t p) = do

public
toState : {t : StateTy} -> interpSTy t -> State t -> IO ()
toState v (MkState STInt p) =
toState {t = STInt } v (MkState STInt p) =
mkForeign (FFun "%0.val = %1" [FPtr, FInt] FUnit) p v
toState v (MkState STString p) = do
toState {t = STString } v (MkState STString p) = do
mkForeign (FFun "%0.val = %1" [FPtr, FString] FUnit) p v
toState Nothing (MkState (STMaybe a) p) =
toState {t = STMaybe a } Nothing (MkState (STMaybe a) p) =
mkForeign (FFun "%0.val = null" [FPtr] FUnit) p
toState (Just v) (MkState (STMaybe a) p) = toState v (MkState a p)
toState xs (MkState (STList a) p) = do
toState {t = STMaybe a } (Just v) (MkState (STMaybe a) p) = toState v (MkState a p)
toState {t = STList a } xs (MkState (STList a) p) = do
array <- mkForeign (FFun "%0.val = []" [FPtr] FPtr) p
sequence_ $ map (\x => do
n <- mkForeign (FFun "%0.push( {} )" [FPtr] FInt) array
Expand Down