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## Copyright (c) Eduardo Julian. All rights reserved.
## This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
## If a copy of the MPL was not distributed with this file,
## You can obtain one at http://mozilla.org/MPL/2.0/.
(;import lux
(lux (control (functor #as F)
(monad #as M))
(data list)))
## [Types]
(deftype #export (IO a)
(-> (,) a))
## [Syntax]
(defmacro #export (@io tokens state)
(case tokens
(\ (@list value))
(let [blank (: AST [["" -1 -1] (#;SymbolS ["" ""])])]
(#;Right [state (@list (` (;_lux_lambda (~ blank) (~ blank) (~ value))))]))
_
(#;Left "Wrong syntax for @io")))
## [Structures]
(defstruct #export IO/Functor (F;Functor IO)
(def (map f ma)
(@io (f (ma [])))))
(defstruct #export IO/Monad (M;Monad IO)
(def _functor IO/Functor)
(def (wrap x)
(@io x))
(def (join mma)
(mma [])))
## [Functions]
(def #export (run-io io)
(All [a] (-> (IO a) a))
(io []))
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