23 lines
764 B
OCaml
23 lines
764 B
OCaml
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module Category = struct
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type t = Unlisted | Published | Invalid | Custom of string
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let compare = Stdlib.compare
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let of_string = function "unlisted" | "published" -> Invalid | c -> Custom c
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let to_string = function Custom c -> c | _ -> ""
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end
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include Category
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module CategorySet = struct
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include Set.Make (Category)
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let of_stringset s = String_set.fold (fun e a -> add (Category.of_string e) a) s empty
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let of_query q = of_stringset (fst q), of_stringset (snd q)
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let predicate (inc, exl) set = not (disjoint inc set) && disjoint exl set
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let of_string x = of_stringset (String_set.of_string x)
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let to_string set =
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let f elt a =
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let s = Category.to_string elt in
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if a <> "" then a ^ ", " ^ s else s
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in
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fold f set ""
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end
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