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31 lines
709 B
Plaintext
31 lines
709 B
Plaintext
effect State s where
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get : {State s} s
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set : s -> {State s} ()
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effect Console where
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read : {Console} (Optional Text)
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write : Text -> {Console} ()
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fst x = case x of Pair.Pair a _ -> a
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snd x = case x of Pair.Pair _ (Pair.Pair b _) -> b
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namespace Console where
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simulate : Effect Console a -> {State ([Text], [Text])} a
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simulate c = case c of
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{Console.read -> k} ->
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io = State.get
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ins = fst io
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outs = snd io
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State.set (drop 1 ins, outs)
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k (at 0 ins) -- this is missing recursive call to handle
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{Console.write t -> k} ->
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io = State.get
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ins = fst io
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outs = snd io
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k (State.set (ins, cons t outs)) -- this is missing recursive call
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()
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