Source file script_set.ml

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open Alpha_context
open Script_typed_ir

let empty : type a. a comparable_ty -> a set =
 fun ty ->
  let module OPS = Set.Make (struct
    type t = a

    let compare = Script_comparable.compare_comparable ty
  end) in
  (module struct
    type elt = a

    let elt_ty = ty

    module OPS = OPS

    let boxed = OPS.empty

    let size = 0
  end)

let update : type a. a -> bool -> a set -> a set =
 fun v b (module Box) ->
  (module struct
    type elt = a

    let elt_ty = Box.elt_ty

    module OPS = Box.OPS

    let boxed =
      if b then Box.OPS.add v Box.boxed else Box.OPS.remove v Box.boxed

    let size =
      let mem = Box.OPS.mem v Box.boxed in
      if mem then if b then Box.size else Box.size - 1
      else if b then Box.size + 1
      else Box.size
  end)

let mem : type elt. elt -> elt set -> bool =
 fun v (module Box) -> Box.OPS.mem v Box.boxed

let fold : type elt acc. (elt -> acc -> acc) -> elt set -> acc -> acc =
 fun f (module Box) -> Box.OPS.fold f Box.boxed

let size : type elt. elt set -> Script_int.n Script_int.num =
 fun (module Box) -> Script_int.(abs (of_int Box.size))