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(import "core/common")
(record Result/Ok value)
(record Result/Ex value)
(let Result/ok Result/Ok/create)
(let Result/ex Result/Ex/create)
(let Result/map (\[f m]
(match (kind m)
:Result/Ok (Result/ok (f (Result/Ok/get-value m)))
:Result/Ex m)))
(let Result/map-ex (\[f m]
(match (kind m)
:Result/Ok m
:Result/Ex (Result/ex (f (Result/Ex/get-value m))))))
(let Result/and-then (\[f m]
(match (kind m)
:Result/Ok (f (Result/Ok/get-value m))
:Result/Ex m)))
(let Result/try (\[catch-f m]
(match (kind m)
:Result/Ok (Result/Ok/get-value m)
:Result/Ex (catch-f (Result/Ex/get-value m)))))
; converts the given impure function that can throw a fatal error
; to an impure function that returns a Result
(let Result/safe! (\![fn! arg]
(try! Result/ex (.! Result/ok fn!) arg)))
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