mirror of
https://github.com/edwinb/Idris2-boot.git
synced 2024-12-21 11:51:31 +03:00
97 lines
2.5 KiB
Idris
97 lines
2.5 KiB
Idris
module PrimIO
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import Builtin
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public export
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data IORes : Type -> Type where
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MkIORes : (result : a) -> (1 x : %World) -> IORes a
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export
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data IO : Type -> Type where
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MkIO : (1 fn : (1 x : %World) -> IORes a) -> IO a
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export
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io_pure : a -> IO a
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io_pure x = MkIO (\w => MkIORes x w)
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export
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io_bind : (1 act : IO a) -> (1 k : a -> IO b) -> IO b
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io_bind (MkIO fn)
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= \k => MkIO (\w => let MkIORes x' w' = fn w
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MkIO res = k x' in
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res w')
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public export
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PrimIO : Type -> Type
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PrimIO a = (1 x : %World) -> IORes a
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%extern prim__putStr : String -> (1 x : %World) -> IORes ()
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%extern prim__getStr : (1 x : %World) -> IORes String
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-- A pointer representing a given parameter type
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-- The parameter is a phantom type, to help differentiate between
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-- different pointer types
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public export
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data Ptr : Type -> Type where
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-- A pointer to any type (representing a void* in foreign calls)
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public export
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data AnyPtr : Type where
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public export
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data ThreadID : Type where
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public export
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data FArgList : Type where
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Nil : FArgList
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(::) : {a : Type} -> (1 arg : a) -> (1 args : FArgList) -> FArgList
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%extern prim__cCall : (ret : Type) -> String -> (1 args : FArgList) ->
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(1 x : %World) -> IORes ret
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%extern prim__schemeCall : (ret : Type) -> String -> (1 args : FArgList) ->
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(1 x : %World) -> IORes ret
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export %inline
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primIO : (1 fn : (1 x : %World) -> IORes a) -> IO a
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primIO op = MkIO op
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export %inline
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toPrim : IO a -> PrimIO a
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toPrim (MkIO fn) = fn
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export %inline
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schemeCall : (ret : Type) -> String -> (1 args : FArgList) -> IO ret
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schemeCall ret fn args = primIO (prim__schemeCall ret fn args)
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export %inline
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cCall : (ret : Type) -> String -> FArgList -> IO ret
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cCall ret fn args = primIO (prim__cCall ret fn args)
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export
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putStr : String -> IO ()
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putStr str = primIO (prim__putStr str)
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export
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putStrLn : String -> IO ()
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putStrLn str = putStr (prim__strAppend str "\n")
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export
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getLine : IO String
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getLine = primIO prim__getStr
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export
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fork : (1 prog : IO ()) -> IO ThreadID
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fork (MkIO act) = schemeCall ThreadID "blodwen-thread" [act]
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unsafeCreateWorld : (1 f : (1 x : %World) -> a) -> a
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unsafeCreateWorld f = f %MkWorld
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unsafeDestroyWorld : (1 x : %World) -> a -> a
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unsafeDestroyWorld %MkWorld x = x
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export
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unsafePerformIO : IO a -> a
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unsafePerformIO (MkIO f)
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= unsafeCreateWorld (\w => case f w of
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MkIORes res w' => unsafeDestroyWorld w' res)
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