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(** This file tests the consistency of [Dictionary_immutable] module types.
We compare each module type S to the most generic version G that exports the same set
of values. We create a module type I by instantiating G to mimic S, such as by
dropping a type parameter. We then test that S = I by writing two identity functors,
one from S to I and one from I to S. *)
open! Base
module _ : module type of Dictionary_immutable = struct
(* The generic interface for accessors. *)
module type Accessors = Dictionary_immutable.Accessors
(* Ensure that Accessors1 is Accessors with only a data type argument. *)
module type Accessors1 = Dictionary_immutable.Accessors1
open struct
module type Accessors_instance1 = sig
type key
type 'data t
include
Accessors
with type _ key := key
and type (_, 'data, _) t := 'data t
and type ('fn, _, _, _) accessor := 'fn
end
end
module _ (M : Accessors1) : Accessors_instance1 = M
module _ (M : Accessors_instance1) : Accessors1 = M
(* Ensure that Accessors2 is Accessors with no phantom type argument. *)
module type Accessors2 = Dictionary_immutable.Accessors2
open struct
module type Accessors_instance2 = sig
type ('key, 'data) t
type ('fn, 'key, 'data) accessor
include
Accessors
with type 'key key := 'key
and type ('key, 'data, _) t := ('key, 'data) t
and type ('fn, 'key, 'data, _) accessor := ('fn, 'key, 'data) accessor
end
end
module _ (M : Accessors2) : Accessors_instance2 = M
module _ (M : Accessors_instance2) : Accessors2 = M
(* Ensure that Accessors3 is Accessors with no [key] type. *)
module type Accessors3 = Dictionary_immutable.Accessors3
open struct
module type Accessors_instance3 = sig
type ('key, 'data, 'phantom) t
type ('fn, 'key, 'data, 'phantom) accessor
include
Accessors
with type 'key key := 'key
and type ('key, 'data, 'phantom) t := ('key, 'data, 'phantom) t
and type ('fn, 'key, 'data, 'phantom) accessor :=
('fn, 'key, 'data, 'phantom) accessor
end
end
module _ (M : Accessors3) : Accessors_instance3 = M
module _ (M : Accessors_instance3) : Accessors3 = M
(* The generic interface for creators. *)
module type Creators = Dictionary_immutable.Creators
(* Ensure that Creators1 is Creators with only a data type argument. *)
module type Creators1 = Dictionary_immutable.Creators1
open struct
module type Creators_instance1 = sig
type key
type 'data t
include
Creators
with type _ key := key
and type (_, 'data, _) t := 'data t
and type ('fn, _, _, _) creator := 'fn
end
end
module _ (M : Creators1) : Creators_instance1 = M
module _ (M : Creators_instance1) : Creators1 = M
(* Ensure that Creators2 is Creators with no phantom type argument. *)
module type Creators2 = Dictionary_immutable.Creators2
open struct
module type Creators_instance2 = sig
type ('key, 'data) t
type ('fn, 'key, 'data) creator
include
Creators
with type 'key key := 'key
and type ('key, 'data, _) t := ('key, 'data) t
and type ('fn, 'key, 'data, _) creator := ('fn, 'key, 'data) creator
end
end
module _ (M : Creators2) : Creators_instance2 = M
module _ (M : Creators_instance2) : Creators2 = M
(* Ensure that Creators3 is Creators with no [key] type. *)
module type Creators3 = Dictionary_immutable.Creators3
open struct
module type Creators_instance3 = sig
type ('key, 'data, 'phantom) t
type ('fn, 'key, 'data, 'phantom) creator
include
Creators
with type 'key key := 'key
and type ('key, 'data, 'phantom) t := ('key, 'data, 'phantom) t
and type ('fn, 'key, 'data, 'phantom) creator :=
('fn, 'key, 'data, 'phantom) creator
end
end
module _ (M : Creators3) : Creators_instance3 = M
module _ (M : Creators_instance3) : Creators3 = M
(* The generic type for creators + accessors. *)
module type S = Dictionary_immutable.S
open struct
module type Creators_and_accessors = sig
type 'key key
type ('key, 'data, 'phantom) t
type ('fn, 'key, 'data, 'phantom) accessor
type ('fn, 'key, 'data, 'phantom) creator
include
Accessors
with type 'key key := 'key key
with type ('key, 'data, 'phantom) t := ('key, 'data, 'phantom) t
with type ('fn, 'key, 'data, 'phantom) accessor :=
('fn, 'key, 'data, 'phantom) accessor
include
Creators
with type 'key key := 'key key
with type ('key, 'data, 'phantom) t := ('key, 'data, 'phantom) t
with type ('fn, 'key, 'data, 'phantom) creator :=
('fn, 'key, 'data, 'phantom) creator
end
end
module _ (M : S) : Creators_and_accessors = M
module _ (M : Creators_and_accessors) : S = M
(* Ensure that S1 is S with only a data type argument. *)
module type S1 = Dictionary_immutable.S1
open struct
module type S_instance1 = sig
type key
type 'data t
include
S
with type _ key := key
and type (_, 'data, _) t := 'data t
and type ('fn, _, _, _) accessor := 'fn
and type ('fn, _, _, _) creator := 'fn
end
end
module _ (M : S1) : S_instance1 = M
module _ (M : S_instance1) : S1 = M
(* Ensure that S2 is S with no phantom type argument. *)
module type S2 = Dictionary_immutable.S2
open struct
module type S_instance2 = sig
type ('key, 'data) t
type ('fn, 'key, 'data) accessor
type ('fn, 'key, 'data) creator
include
S
with type 'key key := 'key
and type ('key, 'data, _) t := ('key, 'data) t
and type ('fn, 'key, 'data, _) accessor := ('fn, 'key, 'data) accessor
and type ('fn, 'key, 'data, _) creator := ('fn, 'key, 'data) creator
end
end
module _ (M : S2) : S_instance2 = M
module _ (M : S_instance2) : S2 = M
(* Ensure that S3 is S with no [key] type. *)
module type S3 = Dictionary_immutable.S3
open struct
module type S_instance3 = sig
type ('key, 'data, 'phantom) t
type ('fn, 'key, 'data, 'phantom) accessor
type ('fn, 'key, 'data, 'phantom) creator
include
S
with type 'key key := 'key
and type ('key, 'data, 'phantom) t := ('key, 'data, 'phantom) t
and type ('fn, 'key, 'data, 'phantom) accessor :=
('fn, 'key, 'data, 'phantom) accessor
and type ('fn, 'key, 'data, 'phantom) creator :=
('fn, 'key, 'data, 'phantom) creator
end
end
module _ (M : S3) : S_instance3 = M
module _ (M : S_instance3) : S3 = M
end
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