Source file ticket_balance_key.ml

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(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2021 Trili Tech, <contact@trili.tech>                       *)
(*                                                                           *)
(* Permission is hereby granted, free of charge, to any person obtaining a   *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
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(* Software is furnished to do so, subject to the following conditions:      *)
(*                                                                           *)
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(* in all copies or substantial portions of the Software.                    *)
(*                                                                           *)
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(* DEALINGS IN THE SOFTWARE.                                                 *)
(*                                                                           *)
(*****************************************************************************)

open Alpha_context

(* This function extracts nodes of:
    - Ticketer
    - Type of content
    - Content
    - Owner
   to generate at ticket-balance key-hash.
*)
let ticket_balance_key_and_amount ctxt ~owner
    (Ticket_scanner.Ex_ticket
      (comp_ty, Script_typed_ir.{ticketer; contents; amount})) =
  let loc = Micheline.dummy_location in
  Script_ir_translator.unparse_comparable_ty ~loc ctxt comp_ty
  >>?= fun (cont_ty_unstripped, ctxt) ->
  (* We strip the annotations from the content type in order to map
     tickets with the same content type, but with different annotations, to the
     same hash. *)
  Gas.consume ctxt (Script.strip_annotations_cost cont_ty_unstripped)
  >>?= fun ctxt ->
  let typ = Script.strip_annotations cont_ty_unstripped in
  let ticketer_address = (ticketer, "default") in
  let owner_address = (owner, "default") in
  let address_t = Script_typed_ir.address_t ~annot:None in
  Script_ir_translator.unparse_data
    ctxt
    Script_ir_translator.Optimized_legacy
    address_t
    ticketer_address
  >>=? fun (ticketer, ctxt) ->
  Script_ir_translator.unparse_comparable_data
    ~loc
    ctxt
    Script_ir_translator.Optimized_legacy
    comp_ty
    contents
  >>=? fun (contents, ctxt) ->
  Script_ir_translator.unparse_data
    ctxt
    Script_ir_translator.Optimized_legacy
    address_t
    owner_address
  >>=? fun (owner, ctxt) ->
  Ticket_balance.make_key_hash ctxt ~ticketer ~typ ~contents ~owner
  >>?= fun (hash, ctxt) -> return (hash, Script_int.to_zint amount, ctxt)