commitment_storage.ml
(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
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(*****************************************************************************)
let exists = Storage.Commitments.mem
let committed_amount ctxt bpkh =
Storage.Commitments.find ctxt bpkh >>=? fun balance ->
return (Option.value ~default:Tez_repr.zero balance)
let increase_commitment_only_call_from_token ctxt bpkh amount =
if Tez_repr.(amount = zero) then return ctxt
else
committed_amount ctxt bpkh >>=? fun balance ->
Tez_repr.(amount +? balance) >>?= fun new_balance ->
Storage.Commitments.add ctxt bpkh new_balance >|= ok
let decrease_commitment_only_call_from_token ctxt bpkh amount =
committed_amount ctxt bpkh >>=? fun balance ->
Tez_repr.(balance -? amount) >>?= fun new_balance ->
if Tez_repr.(new_balance = Tez_repr.zero) then
Storage.Commitments.remove ctxt bpkh >|= ok
else Storage.Commitments.add ctxt bpkh new_balance >|= ok