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newt/tests/black/Auto.newt

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module Auto
ptype String
ptype Int
pfunc i2s : Int -> String := "(i) => ''+i"
pfunc _++_ : String -> String -> String := "(a,b) => a + b"
infixl 4 _++_
-- We need sugar and marking as class/instance on all of this
data Show : U -> U where
MkShow : { A : U } -> ((show : A) -> String) -> Show A
-- FIXME - we'd like to inline this, so `show _ {{showInt}} a` ends up as `i2s a`
show : {A : U} {{myshow : Show A}} -> A -> String
show {_} {{MkShow foo}} a = foo a
showInt : Show Int
showInt = MkShow i2s
ptype World
pfunc log : {A : U} -> A -> World := "(_, a) => console.log(a)"
main : Int -> World
main _ = log ("answer: " ++ show 42)