25 lines
591 B
OCaml
25 lines
591 B
OCaml
type joy_type =
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| JoySymbol of string
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| JoyTrue
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| JoyFalse
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| JoyInt of int
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| JoyList of joy_type list
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(* type joy_list = joy_type list *)
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let joy_true = JoyTrue
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let joy_false = JoyFalse
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let j_loop = JoySymbol "loop"
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let zero = JoyInt 0
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let dummy = JoyList [ joy_true; joy_false; j_loop; zero ]
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let rec joy_to_string jt =
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match jt with
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| JoySymbol sym -> sym
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| JoyTrue -> "true"
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| JoyFalse -> "false"
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| JoyInt i -> string_of_int i
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| JoyList el -> "[" ^ (String.concat " " (List.map joy_to_string el)) ^ "]";;
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let () = print_endline (joy_to_string dummy)
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