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type address = Hash.hash
type t = {name: string; target: address}
module Field = struct
let name = "name"
let target = "target"
end
module Error = struct
open Condition
let malformed_branch () =
condition "branch-malformed" "A branch representation did not conform to what was expected"
empty
let malformed_hash length =
condition "branch-malformed-hash" "A branch target root was not a valid hash"
("length" |=| Value.Integer length)
end
let make ~name ~target = {name; target}
let name branch = branch.name
let target branch = branch.target
module Body = struct
type nonrec t = t
let tag = 'b'
let malformed = Error.malformed_branch
let equal left right = left.name = right.name && Hash.hash_equals left.target right.target
let fields branch =
[Field.name, Object.Field.string branch.name; Field.target, Object.Field.address branch.target]
let of_fields data =
let open Utilities.Result in
let* name = Object.Field.require_string Field.name data in
let* target = Object.Field.require_address ~malformed:Error.malformed_hash Field.target data in
Ok {name; target}
end
include (Object.Codec.Make (Body) : Object.S with type t := t)
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