-{-# OPTIONS -XModalTypes -XMultiParamTypeClasses #-}
+{-# OPTIONS -XModalTypes -XMultiParamTypeClasses -XKindSignatures -XFlexibleContexts #-}
module GHC.HetMet.CodeTypes (
hetmet_brak,
hetmet_esc,
hetmet_csp,
+ hetmet_flatten,
+ pga_flatten,
+ pga_unflatten,
+ pga_flattened_id,
GuestIntegerLiteral, guestIntegerLiteral,
GuestStringLiteral, guestStringLiteral,
GuestCharLiteral, guestCharLiteral,
GuestLanguageAdd, <[ (+) ]>,
GuestLanguageSub, <[ (-) ]>, <[ negate ]>,
GuestLanguageFromInteger, <[ fromInteger ]>,
- GuestLanguageBool, <[ (||) ]>, <[ (&&) ]>, <[ true ]>, <[ false ]>, <[ ifThenElse ]>,
- <[ fromp ]>
+ GuestLanguageBool, <[ (||) ]>, <[ (&&) ]>, <[ true ]>, <[ false ]>, <[ ifThenElse ]>
) where
import Prelude (Integer, String, Char, Bool, error)
import GHC.HetMet.GArrow
+import GHC.HetMet.Private
-hetmet_brak :: forall c. forall a. a -> <[a]>@c
+hetmet_brak :: forall (c :: * -> * -> *). forall a. a -> <[a]>@c
hetmet_brak = Prelude.error "hetmet_brak should never be evaluated; did you forget to compile with -fcoqpass?"
-hetmet_esc :: forall c. forall a. <[a]>@c -> a
+hetmet_esc :: forall (c :: * -> * -> *). forall a. <[a]>@c -> a
hetmet_esc = Prelude.error "hetmet_esc should never be evaluated; did you forget to compile with -fcoqpass?"
-hetmet_csp :: forall c. forall a. a -> a
+hetmet_csp :: forall (c :: * -> * -> *). forall a. a -> a
hetmet_csp = Prelude.error "hetmet_csp should never be evaluated; did you forget to compile with -fcoqpass?"
-<[ fromp ]> :: forall a b . <[ a -> a ]>@b
-<[ fromp ]> = <[ \x -> x ]>
-
-{-
--- After the flattening pass the argument and result types of this
--- function are identical (for any instantiation), so the flattener
--- simply turns it into the identity function. Its only purpose is to
--- act as a "safe type cast" during pre-flattening
--- type-inference/checking:
hetmet_flatten ::
- forall g.
- GArrow g (**) =>
- GArrowDrop g (**) =>
- GArrowCopy g (**) =>
- GArrowSwap g (**) =>
- GArrowLoop g (**) =>
+ forall g .
+ GArrowSTKC g =>
forall x y.
- <[ x -> y ]>@g
+ <[ y ]>@g
->
- (g x y)
-hetmet_flatten _ = Prelude.error "hetmet_flatten should never be evaluated; did you forget to compile with -fcoqpass?"
--}
+ (g (GArrowUnit g) y)
+hetmet_flatten x = unG (pga_flatten x)
+-- After the flattening pass the argument and result types of this
+-- function are identical (for any instantiation), so the flattener
+-- simply turns it into the identity function (pga_flattened_id).
+-- Its only purpose is to act as a "safe type cast" during pre-flattening
+-- type-inference/checking:
+pga_flatten ::
+ forall g x y.
+ <[ x -> y ]>@g ->
+ PGArrow g x y
+pga_flatten = error "hetmet_flatten should never be evaluated; did you forget to compile with -fcoqpass?"
+pga_unflatten ::
+ forall g x y.
+ PGArrow g x y ->
+ <[ x -> y ]>@g
+pga_unflatten = error "hetmet_flatten should never be evaluated; did you forget to compile with -fcoqpass?"
+
+pga_flattened_id ::
+ forall g x y.
+ PGArrow g x y ->
+ PGArrow g x y
+pga_flattened_id x = x
+
+
+-- FIXME: move these and the three above to "prim" or something like that.
+
+-- Technically these functions ought to be invoked *during
+-- compilation*; in the future I would like to use Template Haskell to
+-- do that.
class GuestIntegerLiteral c where
guestIntegerLiteral :: Integer -> <[ Integer ]>@c
-
class GuestStringLiteral c where
guestStringLiteral :: String -> <[ String ]>@c
-
class GuestCharLiteral c where
guestCharLiteral :: Char -> <[ Char ]>@c
+
+class GuestLanguageConstant c t where
+ guestLanguageConstant :: t -> <[ t ]>@c
+
-- Note that stringwise-identical identifiers at different syntactic
-- depths are different identifiers; for this reason the operators
-- below can have a different type at syntactical depth 1 than at