package preface

  1. Overview
  2. Docs

Source file decidable.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
module Core_via_divide_and_conquer
    (Divisible_req : Preface_specs.Divisible.WITH_DIVIDE_AND_CONQUER)
    (Req : Preface_specs.Decidable.WITH_LOSE_AND_CHOOSE
             with type 'a t = 'a Divisible_req.t) =
struct
  include Req
  include Divisible.Core_via_divide_and_conquer (Divisible_req)
end

module Core_via_contramap_and_divide_and_conquer
    (Divisible_req : Preface_specs.Divisible
                     .WITH_CONTRAMAP_AND_DIVIDE_AND_CONQUER)
    (Req : Preface_specs.Decidable.WITH_LOSE_AND_CHOOSE
             with type 'a t = 'a Divisible_req.t) =
struct
  include Req
  include Divisible_req
end

module Operation (Core : Preface_specs.Decidable.CORE) = struct
  include Divisible.Operation (Core)

  let lost = Core.lose Fun.id
  let chosen a b = Core.choose Fun.id a b
end

module Infix
    (Core : Preface_specs.Decidable.CORE)
    (Operation : Preface_specs.Decidable.OPERATION with type 'a t = 'a Core.t) =
struct
  include Divisible.Infix (Core) (Operation)

  let ( >|< ) = Operation.chosen
  let ( ^|^ ) = Operation.chosen
end

module Via
    (Core : Preface_specs.Decidable.CORE)
    (Operation : Preface_specs.Decidable.OPERATION)
    (Infix : Preface_specs.Decidable.INFIX) =
struct
  include Core
  include Operation
  include Infix
  module Infix = Infix
end

module Via_divide_and_conquer
    (Divisible_req : Preface_specs.Divisible.WITH_DIVIDE_AND_CONQUER)
    (Req : Preface_specs.Decidable.WITH_LOSE_AND_CHOOSE
             with type 'a t = 'a Divisible_req.t) =
struct
  module Core = Core_via_divide_and_conquer (Divisible_req) (Req)
  include Core
  module Operation = Operation (Core)
  include Operation
  module Infix = Infix (Core) (Operation)
  include Infix
end

module Via_contramap_and_divide_and_conquer
    (Divisible_req : Preface_specs.Divisible
                     .WITH_CONTRAMAP_AND_DIVIDE_AND_CONQUER)
    (Req : Preface_specs.Decidable.WITH_LOSE_AND_CHOOSE
             with type 'a t = 'a Divisible_req.t) =
struct
  module Core = Core_via_contramap_and_divide_and_conquer (Divisible_req) (Req)
  include Core
  module Operation = Operation (Core)
  include Operation
  module Infix = Infix (Core) (Operation)
  include Infix
end

module Over_divisible
    (Divisible : Preface_specs.Divisible.CORE)
    (Req : Preface_specs.Decidable.WITH_LOSE_AND_CHOOSE
             with type 'a t = 'a Divisible.t) =
  Via_contramap_and_divide_and_conquer (Divisible) (Req)