wip: more sql

src/bin_type.ml

@@ -108,6 +108,13 @@ module Hash_32 = struct
   let bin =
     let open Bin in
     map (bytes 32) of_octets to_octets
+
+  let caqti : t Caqti_type.t =
+    let open Caqti_type in
+    custom
+      ~encode:(fun v -> Ok (to_octets v))
+      ~decode:(fun v -> Ok (of_octets v))
+      octets
 end
 
 module Hash_64 = struct
@@ -125,51 +132,37 @@ module Hash_64 = struct
   let bin =
     let open Bin in
     map (bytes 64) of_octets to_octets
+
+  let caqti : t Caqti_type.t =
+    let open Caqti_type in
+    custom
+      ~encode:(fun v -> Ok (to_octets v))
+      ~decode:(fun v -> Ok (of_octets v))
+      octets
 end
 
 (* Hash over string + '\0' *)
 module Hash_32_cstr = struct
-  type t = Digestif.SHA256.t
+  include Hash_32
 
   let hash s =
     let s = s ^ "\x00" in
     Digestif.SHA256.(digest_string s)
-
-  let of_octets s =
-    match String.length s = 32 with
-    | false -> Fmt.failwith "Hash.of_octets failure: data is not 32 bytes"
-    | true -> Digestif.SHA256.of_raw_string s
-
-  let to_octets = Digestif.SHA256.to_raw_string
-
-  let bin =
-    let open Bin in
-    map (bytes 32) of_octets to_octets
 end
 
 module Hash_64_cstr = struct
-  type t = Digestif.SHA512.t
+  include Hash_64
 
   let hash s =
     let s = s ^ "\x00" in
     Digestif.SHA512.(digest_string s)
-
-  let of_octets s =
-    match String.length s = 64 with
-    | false -> Fmt.failwith "Hash.of_octets failure: data is not 64 bytes"
-    | true -> Digestif.SHA512.of_raw_string s
-
-  let to_octets = Digestif.SHA512.to_raw_string
-
-  let bin =
-    let open Bin in
-    map (bytes 64) of_octets to_octets
 end
 
 module type Hash_S = sig
   type t
 
   val bin : t Bin.t
+  val caqti : t Caqti_type.t
   val hash : string -> t
   val of_octets : string -> t
   val to_octets : t -> string