Source file apply.ml

(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
(*                                                                           *)
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(* copy of this software and associated documentation files (the "Software"),*)
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(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  *)
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(*****************************************************************************)

(** Tezos Protocol Implementation - Main Entry Points *)

open Alpha_context

type error +=
  | (* `Permanent *)
      Not_enough_endorsements of {
      required : int;
      endorsements : int;
    }
  | (* `Temporary *)
      Wrong_consensus_operation_branch of
      Block_hash.t * Block_hash.t
  | (* `Permanent *)
      Invalid_double_baking_evidence of {
      hash1 : Block_hash.t;
      level1 : Raw_level.t;
      round1 : Round.t;
      hash2 : Block_hash.t;
      level2 : Raw_level.t;
      round2 : Round.t;
    }
  | (* `Permanent *)
      Wrong_level_for_consensus_operation of {
      expected : Raw_level.t;
      provided : Raw_level.t;
    }
  | (* `Permanent *)
      Wrong_round_for_consensus_operation of {
      expected : Round.t;
      provided : Round.t;
    }
  | (* `Permanent *)
      Preendorsement_round_too_high of {
      block_round : Round.t;
      provided : Round.t;
    }
  | (* `Permanent *)
      Unexpected_endorsement_in_block
  | (* `Permanent *)
      Unexpected_preendorsement_in_block
  | (* `Permanent *)
      Wrong_payload_hash_for_consensus_operation of {
      expected : Block_payload_hash.t;
      provided : Block_payload_hash.t;
    }
  | (* `Permanent *) Wrong_slot_used_for_consensus_operation
  | (* `Temporary *)
      Consensus_operation_for_future_level of {
      expected : Raw_level.t;
      provided : Raw_level.t;
    }
  | (* `Temporary *)
      Consensus_operation_for_future_round of {
      expected : Round.t;
      provided : Round.t;
    }
  | (* `Outdated *)
      Consensus_operation_for_old_level of {
      expected : Raw_level.t;
      provided : Raw_level.t;
    }
  | (* `Branch *)
      Consensus_operation_for_old_round of {
      expected : Round.t;
      provided : Round.t;
    }
  | (* `Branch *)
      Consensus_operation_on_competing_proposal of {
      expected : Block_payload_hash.t;
      provided : Block_payload_hash.t;
    }
  | (* `Permanent *)
      Set_deposits_limit_on_originated_contract
  | (* `Temporary *)
      Set_deposits_limit_on_unregistered_delegate of
      Signature.Public_key_hash.t
  | (* `Permanent *)
      Set_deposits_limit_too_high of {
      limit : Tez.t;
      max_limit : Tez.t;
    }
  | (* `Branch *) Empty_transaction of Contract.t

let () =
  register_error_kind
    `Permanent
    ~id:"operations.wrong_slot"
    ~title:"wrong slot"
    ~description:"wrong slot"
    ~pp:(fun ppf () -> Format.fprintf ppf "wrong slot")
    Data_encoding.empty
    (function Wrong_slot_used_for_consensus_operation -> Some () | _ -> None)
    (fun () -> Wrong_slot_used_for_consensus_operation) ;
  register_error_kind
    `Permanent
    ~id:"operation.not_enough_endorsements"
    ~title:"Not enough endorsements"
    ~description:
      "The block being validated does not include the required minimum number \
       of endorsements."
    ~pp:(fun ppf (required, endorsements) ->
      Format.fprintf
        ppf
        "Wrong number of endorsements (%i), at least %i are expected"
        endorsements
        required)
    Data_encoding.(obj2 (req "required" int31) (req "endorsements" int31))
    (function
      | Not_enough_endorsements {required; endorsements} ->
          Some (required, endorsements)
      | _ -> None)
    (fun (required, endorsements) ->
      Not_enough_endorsements {required; endorsements}) ;
  register_error_kind
    `Temporary
    ~id:"operation.wrong_consensus_operation_branch"
    ~title:"Wrong consensus operation branch"
    ~description:
      "Trying to include an endorsement or preendorsement which points to the \
       wrong block.\n\
      \       It should be the predecessor for preendorsements and the \
       grandfather for endorsements."
    ~pp:(fun ppf (e, p) ->
      Format.fprintf
        ppf
        "Wrong branch %a, expected %a"
        Block_hash.pp
        p
        Block_hash.pp
        e)
    Data_encoding.(
      obj2
        (req "expected" Block_hash.encoding)
        (req "provided" Block_hash.encoding))
    (function
      | Wrong_consensus_operation_branch (e, p) -> Some (e, p) | _ -> None)
    (fun (e, p) -> Wrong_consensus_operation_branch (e, p)) ;
  register_error_kind
    `Permanent
    ~id:"block.invalid_double_baking_evidence"
    ~title:"Invalid double baking evidence"
    ~description:
      "A double-baking evidence is inconsistent  (two distinct level)"
    ~pp:(fun ppf (hash1, level1, round1, hash2, level2, round2) ->
      Format.fprintf
        ppf
        "Invalid double-baking evidence (hash: %a and %a, levels/rounds: \
         (%ld,%ld) and (%ld,%ld))"
        Block_hash.pp
        hash1
        Block_hash.pp
        hash2
        (Raw_level.to_int32 level1)
        (Round.to_int32 round1)
        (Raw_level.to_int32 level2)
        (Round.to_int32 round2))
    Data_encoding.(
      obj6
        (req "hash1" Block_hash.encoding)
        (req "level1" Raw_level.encoding)
        (req "round1" Round.encoding)
        (req "hash2" Block_hash.encoding)
        (req "level2" Raw_level.encoding)
        (req "round2" Round.encoding))
    (function
      | Invalid_double_baking_evidence
          {hash1; level1; round1; hash2; level2; round2} ->
          Some (hash1, level1, round1, hash2, level2, round2)
      | _ -> None)
    (fun (hash1, level1, round1, hash2, level2, round2) ->
      Invalid_double_baking_evidence
        {hash1; level1; round1; hash2; level2; round2}) ;
  register_error_kind
    `Permanent
    ~id:"wrong_level_for_consensus_operation"
    ~title:"wrong level for consensus operation"
    ~description:"Wrong level for consensus operation."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Wrong level for consensus operation (expected: %a, provided: %a)."
        Raw_level.pp
        expected
        Raw_level.pp
        provided)
    Data_encoding.(
      obj2
        (req "expected" Raw_level.encoding)
        (req "provided" Raw_level.encoding))
    (function
      | Wrong_level_for_consensus_operation {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Wrong_level_for_consensus_operation {expected; provided}) ;
  register_error_kind
    `Permanent
    ~id:"wrong_round_for_consensus_operation"
    ~title:"wrong round for consensus operation"
    ~description:"Wrong round for consensus operation."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Wrong round for consensus operation (expected: %a, provided: %a)."
        Round.pp
        expected
        Round.pp
        provided)
    Data_encoding.(
      obj2 (req "expected" Round.encoding) (req "provided" Round.encoding))
    (function
      | Wrong_round_for_consensus_operation {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Wrong_round_for_consensus_operation {expected; provided}) ;
  register_error_kind
    `Permanent
    ~id:"preendorsement_round_too_high"
    ~title:"preendorsement round too high"
    ~description:"Preendorsement round too high."
    ~pp:(fun ppf (block_round, provided) ->
      Format.fprintf
        ppf
        "Preendorsement round too high (block_round: %a, provided: %a)."
        Round.pp
        block_round
        Round.pp
        provided)
    Data_encoding.(
      obj2 (req "block_round" Round.encoding) (req "provided" Round.encoding))
    (function
      | Preendorsement_round_too_high {block_round; provided} ->
          Some (block_round, provided)
      | _ -> None)
    (fun (block_round, provided) ->
      Preendorsement_round_too_high {block_round; provided}) ;
  register_error_kind
    `Permanent
    ~id:"wrong_payload_hash_for_consensus_operation"
    ~title:"wrong payload hash for consensus operation"
    ~description:"Wrong payload hash for consensus operation."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Wrong payload hash for consensus operation (expected: %a, provided: \
         %a)."
        Block_payload_hash.pp_short
        expected
        Block_payload_hash.pp_short
        provided)
    Data_encoding.(
      obj2
        (req "expected" Block_payload_hash.encoding)
        (req "provided" Block_payload_hash.encoding))
    (function
      | Wrong_payload_hash_for_consensus_operation {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Wrong_payload_hash_for_consensus_operation {expected; provided}) ;
  register_error_kind
    `Permanent
    ~id:"unexpected_endorsement_in_block"
    ~title:"unexpected endorsement in block"
    ~description:"Unexpected endorsement in block."
    ~pp:(fun ppf () -> Format.fprintf ppf "Unexpected endorsement in block.")
    Data_encoding.empty
    (function Unexpected_endorsement_in_block -> Some () | _ -> None)
    (fun () -> Unexpected_endorsement_in_block) ;
  register_error_kind
    `Permanent
    ~id:"unexpected_preendorsement_in_block"
    ~title:"unexpected preendorsement in block"
    ~description:"Unexpected preendorsement in block."
    ~pp:(fun ppf () -> Format.fprintf ppf "Unexpected preendorsement in block.")
    Data_encoding.empty
    (function Unexpected_preendorsement_in_block -> Some () | _ -> None)
    (fun () -> Unexpected_preendorsement_in_block) ;
  register_error_kind
    `Temporary
    ~id:"consensus_operation_for_future_level"
    ~title:"Consensus operation for future level"
    ~description:"Consensus operation for future level."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Consensus operation for future level\n\
        \                            (expected: %a, provided: %a)."
        Raw_level.pp
        expected
        Raw_level.pp
        provided)
    Data_encoding.(
      obj2
        (req "expected" Raw_level.encoding)
        (req "provided" Raw_level.encoding))
    (function
      | Consensus_operation_for_future_level {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Consensus_operation_for_future_level {expected; provided}) ;
  register_error_kind
    `Temporary
    ~id:"consensus_operation_for_future_round"
    ~title:"Consensus operation for future round"
    ~description:"Consensus operation for future round."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Consensus operation for future round (expected: %a, provided: %a)."
        Round.pp
        expected
        Round.pp
        provided)
    Data_encoding.(
      obj2 (req "expected_max" Round.encoding) (req "provided" Round.encoding))
    (function
      | Consensus_operation_for_future_round {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Consensus_operation_for_future_round {expected; provided}) ;
  register_error_kind
    `Outdated
    ~id:"consensus_operation_for_old_level"
    ~title:"Consensus operation for old level"
    ~description:"Consensus operation for old level."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Consensus operation for old level (expected: %a, provided: %a)."
        Raw_level.pp
        expected
        Raw_level.pp
        provided)
    Data_encoding.(
      obj2
        (req "expected" Raw_level.encoding)
        (req "provided" Raw_level.encoding))
    (function
      | Consensus_operation_for_old_level {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Consensus_operation_for_old_level {expected; provided}) ;
  register_error_kind
    `Branch
    ~id:"consensus_operation_for_old_round"
    ~title:"Consensus operation for old round"
    ~description:"Consensus operation for old round."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Consensus operation for old round (expected_min: %a, provided: %a)."
        Round.pp
        expected
        Round.pp
        provided)
    Data_encoding.(
      obj2 (req "expected_min" Round.encoding) (req "provided" Round.encoding))
    (function
      | Consensus_operation_for_old_round {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Consensus_operation_for_old_round {expected; provided}) ;
  register_error_kind
    `Branch
    ~id:"consensus_operation_on_competing_proposal"
    ~title:"Consensus operation on competing proposal"
    ~description:"Consensus operation on competing proposal."
    ~pp:(fun ppf (expected, provided) ->
      Format.fprintf
        ppf
        "Consensus operation on competing proposal (expected: %a, provided: \
         %a)."
        Block_payload_hash.pp_short
        expected
        Block_payload_hash.pp_short
        provided)
    Data_encoding.(
      obj2
        (req "expected" Block_payload_hash.encoding)
        (req "provided" Block_payload_hash.encoding))
    (function
      | Consensus_operation_on_competing_proposal {expected; provided} ->
          Some (expected, provided)
      | _ -> None)
    (fun (expected, provided) ->
      Consensus_operation_on_competing_proposal {expected; provided}) ;
  register_error_kind
    `Permanent
    ~id:"operation.set_deposits_limit_on_originated_contract"
    ~title:"Set deposits limit on an originated contract"
    ~description:"Cannot set deposits limit on an originated contract."
    ~pp:(fun ppf () ->
      Format.fprintf ppf "Cannot set deposits limit on an originated contract.")
    Data_encoding.empty
    (function
      | Set_deposits_limit_on_originated_contract -> Some () | _ -> None)
    (fun () -> Set_deposits_limit_on_originated_contract) ;
  register_error_kind
    `Temporary
    ~id:"operation.set_deposits_limit_on_unregistered_delegate"
    ~title:"Set deposits limit on an unregistered delegate"
    ~description:"Cannot set deposits limit on an unregistered delegate."
    ~pp:(fun ppf c ->
      Format.fprintf
        ppf
        "Cannot set a deposits limit on the unregistered delegate %a."
        Signature.Public_key_hash.pp
        c)
    Data_encoding.(obj1 (req "delegate" Signature.Public_key_hash.encoding))
    (function
      | Set_deposits_limit_on_unregistered_delegate c -> Some c | _ -> None)
    (fun c -> Set_deposits_limit_on_unregistered_delegate c) ;
  register_error_kind
    `Permanent
    ~id:"operation.set_deposits_limit_too_high"
    ~title:"Set deposits limit to a too high value"
    ~description:
      "Cannot set deposits limit such that the active stake overflows."
    ~pp:(fun ppf (limit, max_limit) ->
      Format.fprintf
        ppf
        "Cannot set deposits limit to %a as it is higher the allowed maximum \
         %a."
        Tez.pp
        limit
        Tez.pp
        max_limit)
    Data_encoding.(
      obj2 (req "limit" Tez.encoding) (req "max_limit" Tez.encoding))
    (function
      | Set_deposits_limit_too_high {limit; max_limit} -> Some (limit, max_limit)
      | _ -> None)
    (fun (limit, max_limit) -> Set_deposits_limit_too_high {limit; max_limit}) ;
  register_error_kind
    `Branch
    ~id:"contract.empty_transaction"
    ~title:"Empty transaction"
    ~description:"Forbidden to credit 0ꜩ to a contract without code."
    ~pp:(fun ppf contract ->
      Format.fprintf
        ppf
        "Transactions of 0ꜩ towards a contract without code are forbidden \
         (%a)."
        Contract.pp
        contract)
    Data_encoding.(obj1 (req "contract" Contract.encoding))
    (function Empty_transaction c -> Some c | _ -> None)
    (fun c -> Empty_transaction c)

type error += (* `Temporary *) Wrong_voting_period of int32 * int32

type error +=
  | (* `Permanent *) Internal_operation_replay of packed_internal_operation

type denunciation_kind = Preendorsement | Endorsement | Block

let denunciation_kind_encoding =
  let open Data_encoding in
  string_enum
    [
      ("preendorsement", Preendorsement);
      ("endorsement", Endorsement);
      ("block", Block);
    ]

let pp_denunciation_kind fmt : denunciation_kind -> unit = function
  | Preendorsement -> Format.fprintf fmt "preendorsement"
  | Endorsement -> Format.fprintf fmt "endorsement"
  | Block -> Format.fprintf fmt "baking"

type error += (* `Permanent *)
              Invalid_denunciation of denunciation_kind

type error +=
  | (* `Permanent *)
      Inconsistent_denunciation of {
      kind : denunciation_kind;
      delegate1 : Signature.Public_key_hash.t;
      delegate2 : Signature.Public_key_hash.t;
    }

type error += (* `Branch *) Unrequired_denunciation

type error +=
  | (* `Temporary *)
      Too_early_denunciation of {
      kind : denunciation_kind;
      level : Raw_level.t;
      current : Raw_level.t;
    }

type error +=
  | (* `Permanent *)
      Outdated_denunciation of {
      kind : denunciation_kind;
      level : Raw_level.t;
      last_cycle : Cycle.t;
    }

type error +=
  | (* Permanent *) Invalid_activation of {pkh : Ed25519.Public_key_hash.t}

type error += (* Permanent *) Multiple_revelation

type error += (* Permanent *) Gas_quota_exceeded_init_deserialize

type error += (* `Permanent *) Inconsistent_sources

type error += (* `Permanent *) Failing_noop_error

type error +=
  | (* `Permanent *)
      Zero_frozen_deposits of Signature.Public_key_hash.t

let () =
  register_error_kind
    `Temporary
    ~id:"operation.wrong_voting_period"
    ~title:"Wrong voting period"
    ~description:
      "Trying to include a proposal or ballot meant for another voting period"
    ~pp:(fun ppf (e, p) ->
      Format.fprintf ppf "Wrong voting period %ld, current is %ld" p e)
    Data_encoding.(
      obj2 (req "current_index" int32) (req "provided_index" int32))
    (function Wrong_voting_period (e, p) -> Some (e, p) | _ -> None)
    (fun (e, p) -> Wrong_voting_period (e, p)) ;
  register_error_kind
    `Permanent
    ~id:"internal_operation_replay"
    ~title:"Internal operation replay"
    ~description:"An internal operation was emitted twice by a script"
    ~pp:(fun ppf (Internal_operation {nonce; _}) ->
      Format.fprintf
        ppf
        "Internal operation %d was emitted twice by a script"
        nonce)
    Operation.internal_operation_encoding
    (function Internal_operation_replay op -> Some op | _ -> None)
    (fun op -> Internal_operation_replay op) ;
  register_error_kind
    `Permanent
    ~id:"block.invalid_denunciation"
    ~title:"Invalid denunciation"
    ~description:"A denunciation is malformed"
    ~pp:(fun ppf kind ->
      Format.fprintf
        ppf
        "Malformed double-%a evidence"
        pp_denunciation_kind
        kind)
    Data_encoding.(obj1 (req "kind" denunciation_kind_encoding))
    (function Invalid_denunciation kind -> Some kind | _ -> None)
    (fun kind -> Invalid_denunciation kind) ;
  register_error_kind
    `Permanent
    ~id:"block.inconsistent_denunciation"
    ~title:"Inconsistent denunciation"
    ~description:
      "A denunciation operation is inconsistent (two distinct delegates)"
    ~pp:(fun ppf (kind, delegate1, delegate2) ->
      Format.fprintf
        ppf
        "Inconsistent double-%a evidence (distinct delegate: %a and %a)"
        pp_denunciation_kind
        kind
        Signature.Public_key_hash.pp_short
        delegate1
        Signature.Public_key_hash.pp_short
        delegate2)
    Data_encoding.(
      obj3
        (req "kind" denunciation_kind_encoding)
        (req "delegate1" Signature.Public_key_hash.encoding)
        (req "delegate2" Signature.Public_key_hash.encoding))
    (function
      | Inconsistent_denunciation {kind; delegate1; delegate2} ->
          Some (kind, delegate1, delegate2)
      | _ -> None)
    (fun (kind, delegate1, delegate2) ->
      Inconsistent_denunciation {kind; delegate1; delegate2}) ;
  register_error_kind
    `Branch
    ~id:"block.unrequired_denunciation"
    ~title:"Unrequired denunciation"
    ~description:"A denunciation is unrequired"
    ~pp:(fun ppf _ ->
      Format.fprintf
        ppf
        "A valid denunciation cannot be applied: the associated delegate has \
         already been denounced for this level.")
    Data_encoding.unit
    (function Unrequired_denunciation -> Some () | _ -> None)
    (fun () -> Unrequired_denunciation) ;
  register_error_kind
    `Temporary
    ~id:"block.too_early_denunciation"
    ~title:"Too early denunciation"
    ~description:"A denunciation is too far in the future"
    ~pp:(fun ppf (kind, level, current) ->
      Format.fprintf
        ppf
        "A double-%a denunciation is too far in the future (current level: %a, \
         given level: %a)"
        pp_denunciation_kind
        kind
        Raw_level.pp
        current
        Raw_level.pp
        level)
    Data_encoding.(
      obj3
        (req "kind" denunciation_kind_encoding)
        (req "level" Raw_level.encoding)
        (req "current" Raw_level.encoding))
    (function
      | Too_early_denunciation {kind; level; current} ->
          Some (kind, level, current)
      | _ -> None)
    (fun (kind, level, current) ->
      Too_early_denunciation {kind; level; current}) ;
  register_error_kind
    `Permanent
    ~id:"block.outdated_denunciation"
    ~title:"Outdated denunciation"
    ~description:"A denunciation is outdated."
    ~pp:(fun ppf (kind, level, last_cycle) ->
      Format.fprintf
        ppf
        "A double-%a is outdated (last acceptable cycle: %a, given level: %a)"
        pp_denunciation_kind
        kind
        Cycle.pp
        last_cycle
        Raw_level.pp
        level)
    Data_encoding.(
      obj3
        (req "kind" denunciation_kind_encoding)
        (req "level" Raw_level.encoding)
        (req "last" Cycle.encoding))
    (function
      | Outdated_denunciation {kind; level; last_cycle} ->
          Some (kind, level, last_cycle)
      | _ -> None)
    (fun (kind, level, last_cycle) ->
      Outdated_denunciation {kind; level; last_cycle}) ;
  register_error_kind
    `Permanent
    ~id:"operation.invalid_activation"
    ~title:"Invalid activation"
    ~description:
      "The given key and secret do not correspond to any existing preallocated \
       contract"
    ~pp:(fun ppf pkh ->
      Format.fprintf
        ppf
        "Invalid activation. The public key %a does not match any commitment."
        Ed25519.Public_key_hash.pp
        pkh)
    Data_encoding.(obj1 (req "pkh" Ed25519.Public_key_hash.encoding))
    (function Invalid_activation {pkh} -> Some pkh | _ -> None)
    (fun pkh -> Invalid_activation {pkh}) ;
  register_error_kind
    `Permanent
    ~id:"block.multiple_revelation"
    ~title:"Multiple revelations were included in a manager operation"
    ~description:
      "A manager operation should not contain more than one revelation"
    ~pp:(fun ppf () ->
      Format.fprintf
        ppf
        "Multiple revelations were included in a manager operation")
    Data_encoding.empty
    (function Multiple_revelation -> Some () | _ -> None)
    (fun () -> Multiple_revelation) ;
  register_error_kind
    `Permanent
    ~id:"gas_exhausted.init_deserialize"
    ~title:"Not enough gas for initial deserialization of script expressions"
    ~description:
      "Gas limit was not high enough to deserialize the transaction parameters \
       or origination script code or initial storage, making the operation \
       impossible to parse within the provided gas bounds."
    Data_encoding.empty
    (function Gas_quota_exceeded_init_deserialize -> Some () | _ -> None)
    (fun () -> Gas_quota_exceeded_init_deserialize) ;
  register_error_kind
    `Permanent
    ~id:"operation.inconsistent_sources"
    ~title:"Inconsistent sources in operation pack"
    ~description:
      "The operation pack includes operations from different sources."
    ~pp:(fun ppf () ->
      Format.pp_print_string
        ppf
        "The operation pack includes operations from different sources.")
    Data_encoding.empty
    (function Inconsistent_sources -> Some () | _ -> None)
    (fun () -> Inconsistent_sources) ;
  register_error_kind
    `Permanent
    ~id:"operation.failing_noop"
    ~title:"Failing_noop operation are not executed by the protocol"
    ~description:
      "The failing_noop operation is an operation that is not and never will \
       be executed by the protocol."
    ~pp:(fun ppf () ->
      Format.fprintf
        ppf
        "The failing_noop operation cannot be executed by the protocol")
    Data_encoding.empty
    (function Failing_noop_error -> Some () | _ -> None)
    (fun () -> Failing_noop_error) ;
  register_error_kind
    `Permanent
    ~id:"delegate.zero_frozen_deposits"
    ~title:"Zero frozen deposits"
    ~description:"The delegate has zero frozen deposits."
    ~pp:(fun ppf delegate ->
      Format.fprintf
        ppf
        "Delegate %a has zero frozen deposits; it is not allowed to \
         bake/preendorse/endorse."
        Signature.Public_key_hash.pp
        delegate)
    Data_encoding.(obj1 (req "delegate" Signature.Public_key_hash.encoding))
    (function Zero_frozen_deposits delegate -> Some delegate | _ -> None)
    (fun delegate -> Zero_frozen_deposits delegate)

open Apply_results

let cache_layout = Constants_repr.cache_layout

(**

   Retrieving the source code of a contract from its address is costly
   because it requires I/Os. For this reason, we put the corresponding
   Micheline expression in the cache.

   Elaborating a Micheline node into the well-typed script abstract
   syntax tree is also a costly operation. The result of this operation
   is cached as well.

*)

let apply_manager_operation_content :
    type kind.
    Alpha_context.t ->
    Script_ir_translator.unparsing_mode ->
    payer:Contract.t ->
    source:Contract.t ->
    chain_id:Chain_id.t ->
    internal:bool ->
    gas_consumed_in_precheck:Gas.cost option ->
    kind manager_operation ->
    (context
    * kind successful_manager_operation_result
    * packed_internal_operation list)
    tzresult
    Lwt.t =
 fun ctxt
     mode
     ~payer
     ~source
     ~chain_id
     ~internal
     ~gas_consumed_in_precheck
     operation ->
  let before_operation =
    (* This context is not used for backtracking. Only to compute
         gas consumption and originations for the operation result. *)
    ctxt
  in
  Contract.must_exist ctxt source >>=? fun () ->
  Gas.consume ctxt Michelson_v1_gas.Cost_of.manager_operation >>?= fun ctxt ->
  (match gas_consumed_in_precheck with
  | None -> Ok ctxt
  | Some gas -> Gas.consume ctxt gas)
  >>?= fun ctxt ->
  let consume_deserialization_gas = Script.When_needed in
  (* [note]: deserialization gas has already been accounted for in the gas
     consumed by the precheck and the lazy_exprs have been forced. *)
  match operation with
  | Reveal _ ->
      return
        (* No-op: action already performed by `precheck_manager_contents`. *)
        ( ctxt,
          (Reveal_result
             {consumed_gas = Gas.consumed ~since:before_operation ~until:ctxt}
            : kind successful_manager_operation_result),
          [] )
  | Transaction {amount; parameters; destination; entrypoint} -> (
      Script.force_decode_in_context
        ~consume_deserialization_gas
        ctxt
        parameters
      >>?= fun (parameter, ctxt) ->
      (match Contract.is_implicit destination with
      | None ->
          (if Tez.(amount = zero) then
           (* Detect potential call to non existent contract. *)
           Contract.must_exist ctxt destination
          else return_unit)
          >>=? fun () ->
          (* Since the contract is originated, nothing will be allocated
             or the next transfer of tokens will fail. *)
          return_false
      | Some _ ->
          (* Transfers of zero to implicit accounts are forbidden. *)
          error_when Tez.(amount = zero) (Empty_transaction destination)
          >>?= fun () ->
          (* If the implicit contract is not yet allocated at this point then
             the next transfer of tokens will allocate it. *)
          Contract.allocated ctxt destination >|=? not)
      >>=? fun allocated_destination_contract ->
      Token.transfer ctxt (`Contract source) (`Contract destination) amount
      >>=? fun (ctxt, balance_updates) ->
      Script_cache.find ctxt destination >>=? fun (ctxt, cache_key, script) ->
      match script with
      | None ->
          Lwt.return
            ( ( (match entrypoint with
                | "default" -> Result.return_unit
                | entrypoint ->
                    error (Script_tc_errors.No_such_entrypoint entrypoint))
              >>? fun () ->
                match Micheline.root parameter with
                | Prim (_, D_Unit, [], _) ->
                    (* Allow [Unit] parameter to non-scripted contracts. *)
                    ok ctxt
                | _ ->
                    error
                      (Script_interpreter.Bad_contract_parameter destination) )
            >|? fun ctxt ->
              let result =
                Transaction_result
                  {
                    storage = None;
                    lazy_storage_diff = None;
                    balance_updates;
                    originated_contracts = [];
                    consumed_gas =
                      Gas.consumed ~since:before_operation ~until:ctxt;
                    storage_size = Z.zero;
                    paid_storage_size_diff = Z.zero;
                    allocated_destination_contract;
                  }
              in
              (ctxt, result, []) )
      | Some (script, script_ir) ->
          let now = Script_timestamp.now ctxt in
          let level =
            (Level.current ctxt).level |> Raw_level.to_int32
            |> Script_int.of_int32 |> Script_int.abs
          in
          let step_constants =
            let open Script_interpreter in
            {source; payer; self = destination; amount; chain_id; now; level}
          in
          Script_interpreter.execute
            ctxt
            ~cached_script:(Some script_ir)
            mode
            step_constants
            ~script
            ~parameter
            ~entrypoint
            ~internal
          >>=? fun ( {ctxt; storage; lazy_storage_diff; operations},
                     (updated_cached_script, updated_size) ) ->
          Contract.update_script_storage
            ctxt
            destination
            storage
            lazy_storage_diff
          >>=? fun ctxt ->
          Fees.record_paid_storage_space ctxt destination
          >>=? fun (ctxt, new_size, paid_storage_size_diff) ->
          Contract.originated_from_current_nonce
            ~since:before_operation
            ~until:ctxt
          >>=? fun originated_contracts ->
          Lwt.return
            ( Script_cache.update
                ctxt
                cache_key
                ( {script with storage = Script.lazy_expr storage},
                  updated_cached_script )
                updated_size
            >|? fun ctxt ->
              let result =
                Transaction_result
                  {
                    storage = Some storage;
                    lazy_storage_diff;
                    balance_updates;
                    originated_contracts;
                    consumed_gas =
                      Gas.consumed ~since:before_operation ~until:ctxt;
                    storage_size = new_size;
                    paid_storage_size_diff;
                    allocated_destination_contract;
                  }
              in
              (ctxt, result, operations) ))
  | Origination {delegate; script; preorigination; credit} ->
      Script.force_decode_in_context
        ~consume_deserialization_gas
        ctxt
        script.storage
      >>?= fun (_unparsed_storage, ctxt) ->
      Script.force_decode_in_context
        ~consume_deserialization_gas
        ctxt
        script.code
      >>?= fun (unparsed_code, ctxt) ->
      Script_ir_translator.parse_script
        ctxt
        ~legacy:false
        ~allow_forged_in_storage:internal
        script
      >>=? fun (Ex_script parsed_script, ctxt) ->
      let views_result =
        Script_ir_translator.typecheck_views
          ctxt
          ~legacy:false
          parsed_script.storage_type
          parsed_script.views
      in
      trace
        (Script_tc_errors.Ill_typed_contract (unparsed_code, []))
        views_result
      >>=? fun ctxt ->
      Script_ir_translator.collect_lazy_storage
        ctxt
        parsed_script.storage_type
        parsed_script.storage
      >>?= fun (to_duplicate, ctxt) ->
      let to_update = Script_ir_translator.no_lazy_storage_id in
      Script_ir_translator.extract_lazy_storage_diff
        ctxt
        Optimized
        parsed_script.storage_type
        parsed_script.storage
        ~to_duplicate
        ~to_update
        ~temporary:false
      >>=? fun (storage, lazy_storage_diff, ctxt) ->
      Script_ir_translator.unparse_data
        ctxt
        Optimized
        parsed_script.storage_type
        storage
      >>=? fun (storage, ctxt) ->
      let storage = Script.lazy_expr (Micheline.strip_locations storage) in
      let script = {script with storage} in
      (match preorigination with
      | Some contract ->
          assert internal ;
          (* The preorigination field is only used to early return
                 the address of an originated contract in Michelson.
                 It cannot come from the outside. *)
          ok (ctxt, contract)
      | None -> Contract.fresh_contract_from_current_nonce ctxt)
      >>?= fun (ctxt, contract) ->
      Contract.raw_originate
        ctxt
        ~prepaid_bootstrap_storage:false
        contract
        ~script:(script, lazy_storage_diff)
      >>=? fun ctxt ->
      (match delegate with
      | None -> return ctxt
      | Some delegate -> Delegate.init ctxt contract delegate)
      >>=? fun ctxt ->
      Token.transfer ctxt (`Contract source) (`Contract contract) credit
      >>=? fun (ctxt, balance_updates) ->
      Fees.record_paid_storage_space ctxt contract
      >|=? fun (ctxt, size, paid_storage_size_diff) ->
      let result =
        Origination_result
          {
            lazy_storage_diff;
            balance_updates;
            originated_contracts = [contract];
            consumed_gas = Gas.consumed ~since:before_operation ~until:ctxt;
            storage_size = size;
            paid_storage_size_diff;
          }
      in
      (ctxt, result, [])
  | Delegation delegate ->
      Delegate.set ctxt source delegate >|=? fun ctxt ->
      ( ctxt,
        Delegation_result
          {consumed_gas = Gas.consumed ~since:before_operation ~until:ctxt},
        [] )
  | Register_global_constant {value} ->
      (* Decode the value and consume gas appropriately *)
      Script.force_decode_in_context ~consume_deserialization_gas ctxt value
      >>?= fun (expr, ctxt) ->
      (* Set the key to the value in storage. *)
      Global_constants_storage.register ctxt expr
      >>=? fun (ctxt, address, size) ->
      (* The burn and the reporting of the burn are calculated differently.

         [Fees.record_global_constant_storage_space] does the actual burn
         based on the size of the constant registered, and this causes a
         change in account balance.

         On the other hand, the receipt is calculated
         with the help of [Fees.cost_of_bytes], and is included in block metadata
         and the client output. The receipt is also used during simulation,
         letting the client automatically set an appropriate storage limit.
         TODO : is this concern still honored by the token management
         refactoring ? *)
      let (ctxt, paid_size) =
        Fees.record_global_constant_storage_space ctxt size
      in
      let result =
        Register_global_constant_result
          {
            balance_updates = [];
            consumed_gas = Gas.consumed ~since:before_operation ~until:ctxt;
            size_of_constant = paid_size;
            global_address = address;
          }
      in
      return (ctxt, result, [])
  | Set_deposits_limit limit -> (
      (match limit with
      | None -> return_unit
      | Some limit ->
          let frozen_deposits_percentage =
            Constants.frozen_deposits_percentage ctxt
          in
          let max_limit =
            Tez.of_mutez_exn
              Int64.(
                mul (of_int frozen_deposits_percentage) Int64.(div max_int 100L))
          in
          fail_when
            Tez.(limit > max_limit)
            (Set_deposits_limit_too_high {limit; max_limit}))
      >>=? fun () ->
      Contract.is_implicit source |> function
      | None -> fail Set_deposits_limit_on_originated_contract
      | Some delegate ->
          Delegate.registered ctxt delegate >>=? fun is_registered ->
          fail_unless
            is_registered
            (Set_deposits_limit_on_unregistered_delegate delegate)
          >>=? fun () ->
          Delegate.set_frozen_deposits_limit ctxt delegate limit >>= fun ctxt ->
          return
            ( ctxt,
              Set_deposits_limit_result
                {
                  consumed_gas = Gas.consumed ~since:before_operation ~until:ctxt;
                },
              [] ))

type success_or_failure = Success of context | Failure

let apply_internal_manager_operations ctxt mode ~payer ~chain_id ops =
  let[@coq_struct "ctxt"] rec apply ctxt applied worklist =
    match worklist with
    | [] -> Lwt.return (Success ctxt, List.rev applied)
    | Internal_operation ({source; operation; nonce} as op) :: rest -> (
        (if internal_nonce_already_recorded ctxt nonce then
         fail (Internal_operation_replay (Internal_operation op))
        else
          let ctxt = record_internal_nonce ctxt nonce in
          apply_manager_operation_content
            ctxt
            mode
            ~source
            ~payer
            ~chain_id
            ~internal:true
            ~gas_consumed_in_precheck:None
            operation)
        >>= function
        | Error errors ->
            let result =
              Internal_operation_result
                (op, Failed (manager_kind op.operation, errors))
            in
            let skipped =
              List.rev_map
                (fun (Internal_operation op) ->
                  Internal_operation_result
                    (op, Skipped (manager_kind op.operation)))
                rest
            in
            Lwt.return (Failure, List.rev (skipped @ result :: applied))
        | Ok (ctxt, result, emitted) ->
            apply
              ctxt
              (Internal_operation_result (op, Applied result) :: applied)
              (emitted @ rest))
  in
  apply ctxt [] ops

let precheck_manager_contents (type kind) ctxt (op : kind Kind.manager contents)
    ~(only_batch : bool) : (context * precheck_result) tzresult Lwt.t =
  let[@coq_match_with_default] (Manager_operation
                                 {
                                   source;
                                   fee;
                                   counter;
                                   operation;
                                   gas_limit;
                                   storage_limit;
                                 }) =
    op
  in
  (if only_batch then
   (* Gas.consume_limit_in_block will only raise a "temporary" error, however
      when the precheck is called on a batch in isolation (like e.g. in the
      mempool) it must "refuse" operations whose total gas_limit (the sum of
      the gas_limits of each operation) is already above the block limit. We
      add the "permanent" error Gas.Gas_limit_too_high on top of the trace to
      this effect. *)
   record_trace Gas.Gas_limit_too_high
  else fun errs -> errs)
  @@ Gas.consume_limit_in_block ctxt gas_limit
  >>?= fun ctxt ->
  let ctxt = Gas.set_limit ctxt gas_limit in
  let ctxt_before = ctxt in
  Fees.check_storage_limit ctxt ~storage_limit >>?= fun () ->
  let source_contract = Contract.implicit_contract source in
  Contract.must_be_allocated ctxt source_contract >>=? fun () ->
  Contract.check_counter_increment ctxt source counter >>=? fun () ->
  let consume_deserialization_gas = Script.Always in
  (* We want to always consume the deserialization gas here, independently of
     the internal state of the lazy_exprs in the arguments. Otherwise we might
     risk getting different results if the operation has already been
     deserialized before (e.g. when retrieve in JSON format). *)
  (match operation with
  | Reveal pk -> Contract.reveal_manager_key ctxt source pk
  | Transaction {parameters; _} ->
      Lwt.return
      @@ record_trace Gas_quota_exceeded_init_deserialize
      @@ (* Fail early if not enough gas for complete deserialization
             cost or if deserialization fails. The gas consumed here is
            "replayed" in [apply_manager_contents]. *)
      ( Script.force_decode_in_context
          ~consume_deserialization_gas
          ctxt
          parameters
      >|? fun (_arg, ctxt) -> ctxt )
  | Origination {script; _} ->
      Lwt.return
      @@ record_trace Gas_quota_exceeded_init_deserialize
      @@ (* See comment in the Transaction branch *)
      ( Script.force_decode_in_context
          ~consume_deserialization_gas
          ctxt
          script.code
      >>? fun (_code, ctxt) ->
        Script.force_decode_in_context
          ~consume_deserialization_gas
          ctxt
          script.storage
        >|? fun (_storage, ctxt) -> ctxt )
  | Register_global_constant {value} ->
      Lwt.return
      @@ record_trace Gas_quota_exceeded_init_deserialize
      @@ (* See comment in the Transaction branch *)
      ( Script.force_decode_in_context ~consume_deserialization_gas ctxt value
      >|? fun (_value, ctxt) -> ctxt )
  | _ -> return ctxt)
  >>=? fun ctxt ->
  Contract.increment_counter ctxt source >>=? fun ctxt ->
  Token.transfer ctxt (`Contract source_contract) `Block_fees fee
  >|=? fun (ctxt, balance_updates) ->
  let consumed_gas = Gas.consumed ~since:ctxt_before ~until:ctxt in
  (ctxt, {balance_updates; consumed_gas})

(** [burn_storage_fees ctxt smopr storage_limit payer] burns the storage fees
    associated to the transaction or origination result [smopr].
    Returns an updated context, an updated storage limit with the space consumed
    by the operation subtracted, and [smopr] with the relevant balance updates
    included. *)
let burn_storage_fees :
    type kind.
    context ->
    kind successful_manager_operation_result ->
    storage_limit:Z.t ->
    payer:Contract.t ->
    (context * Z.t * kind successful_manager_operation_result) tzresult Lwt.t =
 fun ctxt smopr ~storage_limit ~payer ->
  match smopr with
  | Transaction_result payload ->
      let consumed = payload.paid_storage_size_diff in
      let payer = `Contract payer in
      Fees.burn_storage_fees ctxt ~storage_limit ~payer consumed
      >>=? fun (ctxt, storage_limit, storage_bus) ->
      (if payload.allocated_destination_contract then
       Fees.burn_origination_fees ctxt ~storage_limit ~payer
      else return (ctxt, storage_limit, []))
      >>=? fun (ctxt, storage_limit, origination_bus) ->
      let balance_updates =
        storage_bus @ payload.balance_updates @ origination_bus
      in
      return
        ( ctxt,
          storage_limit,
          Transaction_result
            {
              storage = payload.storage;
              lazy_storage_diff = payload.lazy_storage_diff;
              balance_updates;
              originated_contracts = payload.originated_contracts;
              consumed_gas = payload.consumed_gas;
              storage_size = payload.storage_size;
              paid_storage_size_diff = payload.paid_storage_size_diff;
              allocated_destination_contract =
                payload.allocated_destination_contract;
            } )
  | Origination_result payload ->
      let consumed = payload.paid_storage_size_diff in
      let payer = `Contract payer in
      Fees.burn_storage_fees ctxt ~storage_limit ~payer consumed
      >>=? fun (ctxt, storage_limit, storage_bus) ->
      Fees.burn_origination_fees ctxt ~storage_limit ~payer
      >>=? fun (ctxt, storage_limit, origination_bus) ->
      let balance_updates =
        storage_bus @ origination_bus @ payload.balance_updates
      in
      return
        ( ctxt,
          storage_limit,
          Origination_result
            {
              lazy_storage_diff = payload.lazy_storage_diff;
              balance_updates;
              originated_contracts = payload.originated_contracts;
              consumed_gas = payload.consumed_gas;
              storage_size = payload.storage_size;
              paid_storage_size_diff = payload.paid_storage_size_diff;
            } )
  | Reveal_result _ | Delegation_result _ -> return (ctxt, storage_limit, smopr)
  | Register_global_constant_result payload ->
      let consumed = payload.size_of_constant in
      let payer = `Contract payer in
      Fees.burn_storage_fees ctxt ~storage_limit ~payer consumed
      >>=? fun (ctxt, storage_limit, storage_bus) ->
      let balance_updates = storage_bus @ payload.balance_updates in
      return
        ( ctxt,
          storage_limit,
          Register_global_constant_result
            {
              balance_updates;
              consumed_gas = payload.consumed_gas;
              size_of_constant = payload.size_of_constant;
              global_address = payload.global_address;
            } )
  | Set_deposits_limit_result _ -> return (ctxt, storage_limit, smopr)

let apply_manager_contents (type kind) ctxt mode chain_id
    ~gas_consumed_in_precheck (op : kind Kind.manager contents) :
    (success_or_failure
    * kind manager_operation_result
    * packed_internal_operation_result list)
    Lwt.t =
  let[@coq_match_with_default] (Manager_operation
                                 {
                                   source;
                                   operation;
                                   gas_limit;
                                   storage_limit;
                                   _;
                                 }) =
    op
  in
  (* We do not expose the internal scaling to the users. Instead, we multiply
       the specified gas limit by the internal scaling. *)
  let ctxt = Gas.set_limit ctxt gas_limit in
  let source = Contract.implicit_contract source in
  apply_manager_operation_content
    ctxt
    mode
    ~source
    ~payer:source
    ~internal:false
    ~gas_consumed_in_precheck
    ~chain_id
    operation
  >>= function
  | Ok (ctxt, operation_results, internal_operations) -> (
      apply_internal_manager_operations
        ctxt
        mode
        ~payer:source
        ~chain_id
        internal_operations
      >>= function
      | (Success ctxt, internal_operations_results) -> (
          burn_storage_fees ctxt operation_results ~storage_limit ~payer:source
          >>= function
          | Ok (ctxt, storage_limit, operation_results) -> (
              List.fold_left_es
                (fun (ctxt, storage_limit, res) iopr ->
                  let (Internal_operation_result (op, mopr)) = iopr in
                  match mopr with
                  | Applied smopr ->
                      burn_storage_fees ctxt smopr ~storage_limit ~payer:source
                      >>=? fun (ctxt, storage_limit, smopr) ->
                      let iopr =
                        Internal_operation_result (op, Applied smopr)
                      in
                      return (ctxt, storage_limit, iopr :: res)
                  | _ -> return (ctxt, storage_limit, iopr :: res))
                (ctxt, storage_limit, [])
                internal_operations_results
              >|= function
              | Ok (ctxt, _, internal_operations_results) ->
                  ( Success ctxt,
                    Applied operation_results,
                    List.rev internal_operations_results )
              | Error errors ->
                  ( Failure,
                    Backtracked (operation_results, Some errors),
                    internal_operations_results ))
          | Error errors ->
              Lwt.return
                ( Failure,
                  Backtracked (operation_results, Some errors),
                  internal_operations_results ))
      | (Failure, internal_operations_results) ->
          Lwt.return
            (Failure, Applied operation_results, internal_operations_results))
  | Error errors ->
      Lwt.return (Failure, Failed (manager_kind operation, errors), [])

let skipped_operation_result :
    type kind. kind manager_operation -> kind manager_operation_result =
  function
  | operation -> (
      match operation with
      | Reveal _ ->
          Applied
            (Reveal_result {consumed_gas = Gas.Arith.zero}
              : kind successful_manager_operation_result)
      | _ -> Skipped (manager_kind operation))

let rec mark_skipped :
    type kind.
    payload_producer:Signature.Public_key_hash.t ->
    Level.t ->
    kind Kind.manager prechecked_contents_list ->
    kind Kind.manager contents_result_list =
 fun ~payload_producer level prechecked_contents_list ->
  match[@coq_match_with_default] prechecked_contents_list with
  | PrecheckedSingle
      {
        contents = Manager_operation {operation; _};
        result = {balance_updates; _};
      } ->
      Single_result
        (Manager_operation_result
           {
             balance_updates;
             operation_result = skipped_operation_result operation;
             internal_operation_results = [];
           })
  | PrecheckedCons
      ( {
          contents = Manager_operation {operation; _};
          result = {balance_updates; _};
        },
        rest ) ->
      Cons_result
        ( Manager_operation_result
            {
              balance_updates;
              operation_result = skipped_operation_result operation;
              internal_operation_results = [];
            },
          mark_skipped ~payload_producer level rest )

(** Returns an updated context, and a list of prechecked contents containing
    balance updates for fees related to each manager operation in
    [contents_list]. *)
let precheck_manager_contents_list ctxt contents_list ~mempool_mode =
  let rec rec_precheck_manager_contents_list :
      type kind.
      Alpha_context.t ->
      kind Kind.manager contents_list ->
      (context * kind Kind.manager prechecked_contents_list) tzresult Lwt.t =
   fun ctxt contents_list ->
    match[@coq_match_with_default] contents_list with
    | Single contents ->
        precheck_manager_contents ctxt contents ~only_batch:mempool_mode
        >>=? fun (ctxt, result) ->
        return (ctxt, PrecheckedSingle {contents; result})
    | Cons (contents, rest) ->
        precheck_manager_contents ctxt contents ~only_batch:mempool_mode
        >>=? fun (ctxt, result) ->
        rec_precheck_manager_contents_list ctxt rest
        >>=? fun (ctxt, results_rest) ->
        return (ctxt, PrecheckedCons ({contents; result}, results_rest))
  in
  let ctxt = if mempool_mode then Gas.reset_block_gas ctxt else ctxt in
  rec_precheck_manager_contents_list ctxt contents_list

let check_manager_signature ctxt chain_id (op : _ Kind.manager contents_list)
    raw_operation =
  (* Currently, the [op] only contains one signature, so
     all operations are required to be from the same manager. This may
     change in the future, allowing several managers to group-sign a
     sequence of transactions. *)
  let check_same_manager (source, source_key) manager =
    match manager with
    | None ->
        (* Consistency already checked by
           [reveal_manager_key] in [precheck_manager_contents]. *)
        ok (source, source_key)
    | Some (manager, manager_key) ->
        if Signature.Public_key_hash.equal source manager then
          ok (source, Option.either manager_key source_key)
        else error Inconsistent_sources
  in
  let rec find_source :
      type kind.
      kind Kind.manager contents_list ->
      (Signature.public_key_hash * Signature.public_key option) option ->
      (Signature.public_key_hash * Signature.public_key option) tzresult =
   fun contents_list manager ->
    let source (type kind) = function[@coq_match_with_default]
      | (Manager_operation {source; operation = Reveal key; _} :
          kind Kind.manager contents) ->
          (source, Some key)
      | Manager_operation {source; _} -> (source, None)
    in
    match contents_list with
    | Single op -> check_same_manager (source op) manager
    | Cons (op, rest) ->
        check_same_manager (source op) manager >>? fun manager ->
        find_source rest (Some manager)
  in
  find_source op None >>?= fun (source, source_key) ->
  (match source_key with
  | Some key -> return key
  | None -> Contract.get_manager_key ctxt source)
  >>=? fun public_key ->
  Lwt.return (Operation.check_signature public_key chain_id raw_operation)

let rec apply_manager_contents_list_rec :
    type kind.
    Alpha_context.t ->
    Script_ir_translator.unparsing_mode ->
    payload_producer:public_key_hash ->
    Chain_id.t ->
    kind Kind.manager prechecked_contents_list ->
    (success_or_failure * kind Kind.manager contents_result_list) Lwt.t =
 fun ctxt mode ~payload_producer chain_id prechecked_contents_list ->
  let level = Level.current ctxt in
  match[@coq_match_with_default] prechecked_contents_list with
  | PrecheckedSingle
      {
        contents = Manager_operation _ as op;
        result = {consumed_gas; balance_updates};
      } ->
      apply_manager_contents
        ctxt
        mode
        chain_id
        ~gas_consumed_in_precheck:(Some consumed_gas)
        op
      >|= fun (ctxt_result, operation_result, internal_operation_results) ->
      let result =
        Manager_operation_result
          {balance_updates; operation_result; internal_operation_results}
      in
      (ctxt_result, Single_result result)
  | PrecheckedCons
      ( {
          contents = Manager_operation _ as op;
          result = {consumed_gas; balance_updates};
        },
        rest ) -> (
      apply_manager_contents
        ctxt
        mode
        chain_id
        ~gas_consumed_in_precheck:(Some consumed_gas)
        op
      >>= function
      | (Failure, operation_result, internal_operation_results) ->
          let result =
            Manager_operation_result
              {balance_updates; operation_result; internal_operation_results}
          in
          Lwt.return
            ( Failure,
              Cons_result (result, mark_skipped ~payload_producer level rest) )
      | (Success ctxt, operation_result, internal_operation_results) ->
          let result =
            Manager_operation_result
              {balance_updates; operation_result; internal_operation_results}
          in
          apply_manager_contents_list_rec
            ctxt
            mode
            ~payload_producer
            chain_id
            rest
          >|= fun (ctxt_result, results) ->
          (ctxt_result, Cons_result (result, results)))

let mark_backtracked results =
  let rec mark_contents_list :
      type kind.
      kind Kind.manager contents_result_list ->
      kind Kind.manager contents_result_list = function
    | Single_result (Manager_operation_result op) ->
        Single_result
          (Manager_operation_result
             {
               balance_updates = op.balance_updates;
               operation_result =
                 mark_manager_operation_result op.operation_result;
               internal_operation_results =
                 List.map
                   mark_internal_operation_results
                   op.internal_operation_results;
             })
    | Cons_result (Manager_operation_result op, rest) ->
        Cons_result
          ( Manager_operation_result
              {
                balance_updates = op.balance_updates;
                operation_result =
                  mark_manager_operation_result op.operation_result;
                internal_operation_results =
                  List.map
                    mark_internal_operation_results
                    op.internal_operation_results;
              },
            mark_contents_list rest )
  and mark_internal_operation_results (Internal_operation_result (kind, result))
      =
    Internal_operation_result (kind, mark_manager_operation_result result)
  and mark_manager_operation_result :
      type kind. kind manager_operation_result -> kind manager_operation_result
      = function
    | (Failed _ | Skipped _ | Backtracked _) as result -> result
    | Applied (Reveal_result _) as result -> result
    | Applied result -> Backtracked (result, None)
  in
  mark_contents_list results
  [@@coq_axiom_with_reason "non-top-level mutual recursion"]

type apply_mode =
  | Application of {
      predecessor_block : Block_hash.t;
      payload_hash : Block_payload_hash.t;
      locked_round : Round.t option;
      predecessor_level : Level.t;
      predecessor_round : Round.t;
      round : Round.t;
    } (* Both partial and normal *)
  | Full_construction of {
      predecessor_block : Block_hash.t;
      payload_hash : Block_payload_hash.t;
      predecessor_level : Level.t;
      predecessor_round : Round.t;
      round : Round.t;
    }
  | Partial_construction of {
      predecessor_level : Level.t;
      predecessor_round : Round.t;
      grand_parent_round : Round.t;
    }

let get_predecessor_level = function
  | Application {predecessor_level; _}
  | Full_construction {predecessor_level; _}
  | Partial_construction {predecessor_level; _} ->
      predecessor_level

let record_operation (type kind) ctxt (operation : kind operation) : context =
  match operation.protocol_data.contents with
  | Single (Preendorsement _) -> ctxt
  | Single (Endorsement _) -> ctxt
  | Single
      ( Failing_noop _ | Proposals _ | Ballot _ | Seed_nonce_revelation _
      | Double_endorsement_evidence _ | Double_preendorsement_evidence _
      | Double_baking_evidence _ | Activate_account _ | Manager_operation _ )
  | Cons (Manager_operation _, _) ->
      let hash = Operation.hash operation in
      record_non_consensus_operation_hash ctxt hash

type 'consensus_op_kind expected_consensus_content = {
  payload_hash : Block_payload_hash.t;
  branch : Block_hash.t;
  level : Level.t;
  round : Round.t;
}

(* The [Alpha_context] is modified only in [Full_construction] mode
   when we check a preendorsement if the [preendorsement_quorum_round]
   was not set. *)
let compute_expected_consensus_content (type consensus_op_kind)
    ~(current_level : Level.t) ~(proposal_level : Level.t)
    (ctxt : Alpha_context.t) (application_mode : apply_mode)
    (operation_kind : consensus_op_kind consensus_operation_type)
    (operation_round : Round.t) (operation_level : Raw_level.t) :
    (Alpha_context.t * consensus_op_kind expected_consensus_content) tzresult
    Lwt.t =
  match operation_kind with
  | Endorsement -> (
      match Consensus.endorsement_branch ctxt with
      | None -> (
          match application_mode with
          | Application _ | Full_construction _ ->
              fail Unexpected_endorsement_in_block
          | Partial_construction _ ->
              fail
                (Consensus_operation_for_future_level
                   {expected = proposal_level.level; provided = operation_level})
          )
      | Some (branch, payload_hash) -> (
          match application_mode with
          | Application {predecessor_round; _}
          | Full_construction {predecessor_round; _}
          | Partial_construction {predecessor_round; _} ->
              return
                ( ctxt,
                  {
                    payload_hash;
                    branch;
                    level = proposal_level;
                    round = predecessor_round;
                  } )))
  | Preendorsement -> (
      match application_mode with
      | Application {locked_round = None; _} ->
          fail Unexpected_preendorsement_in_block
      | Application
          {
            payload_hash;
            predecessor_block = branch;
            locked_round = Some locked_round;
            _;
          } ->
          return
            ( ctxt,
              {
                payload_hash;
                branch;
                level = current_level;
                round = locked_round;
              } )
      | Partial_construction {predecessor_round; _} -> (
          match Consensus.endorsement_branch ctxt with
          | None ->
              fail
                (Consensus_operation_for_future_level
                   {expected = proposal_level.level; provided = operation_level})
          | Some (branch, payload_hash) ->
              return
                ( ctxt,
                  {
                    payload_hash;
                    branch;
                    level = proposal_level;
                    round = predecessor_round;
                  } ))
      | Full_construction {payload_hash; predecessor_block = branch; _} ->
          let (ctxt', round) =
            match Consensus.get_preendorsements_quorum_round ctxt with
            | None ->
                ( Consensus.set_preendorsements_quorum_round ctxt operation_round,
                  operation_round )
            | Some round -> (ctxt, round)
          in
          return (ctxt', {payload_hash; branch; level = current_level; round}))

let check_level (apply_mode : apply_mode) ~expected ~provided =
  match apply_mode with
  | Application _ | Full_construction _ ->
      error_unless
        (Raw_level.equal expected provided)
        (Wrong_level_for_consensus_operation {expected; provided})
  | Partial_construction _ ->
      (* Valid grand parent's endorsements were treated by
         [validate_grand_parent_endorsement]. *)
      error_when
        Raw_level.(expected > provided)
        (Consensus_operation_for_old_level {expected; provided})
      >>? fun () ->
      error_when
        Raw_level.(expected < provided)
        (Consensus_operation_for_future_level {expected; provided})

let check_payload_hash (apply_mode : apply_mode) ~expected ~provided =
  match apply_mode with
  | Application _ | Full_construction _ ->
      error_unless
        (Block_payload_hash.equal expected provided)
        (Wrong_payload_hash_for_consensus_operation {expected; provided})
  | Partial_construction _ ->
      error_unless
        (Block_payload_hash.equal expected provided)
        (Consensus_operation_on_competing_proposal {expected; provided})

let check_operation_branch ~expected ~provided =
  error_unless
    (Block_hash.equal expected provided)
    (Wrong_consensus_operation_branch (expected, provided))

let check_round (type kind) (operation_kind : kind consensus_operation_type)
    (apply_mode : apply_mode) ~(expected : Round.t) ~(provided : Round.t) :
    unit tzresult =
  match apply_mode with
  | Partial_construction _ ->
      error_when
        Round.(expected > provided)
        (Consensus_operation_for_old_round {expected; provided})
      >>? fun () ->
      error_when
        Round.(expected < provided)
        (Consensus_operation_for_future_round {expected; provided})
  | Full_construction {round; _} | Application {round; _} ->
      (match operation_kind with
      | Preendorsement ->
          error_when
            Round.(round <= provided)
            (Preendorsement_round_too_high {block_round = round; provided})
      | Endorsement -> Result.return_unit)
      >>? fun () ->
      error_unless
        (Round.equal expected provided)
        (Wrong_round_for_consensus_operation {expected; provided})

let check_consensus_content (type kind) (apply_mode : apply_mode)
    (content : consensus_content) (operation_branch : Block_hash.t)
    (operation_kind : kind consensus_operation_type)
    (expected_content : kind expected_consensus_content) : unit tzresult =
  let expected_level = expected_content.level.level in
  let provided_level = content.level in
  let expected_round = expected_content.round in
  let provided_round = content.round in
  check_level apply_mode ~expected:expected_level ~provided:provided_level
  >>? fun () ->
  check_round
    operation_kind
    apply_mode
    ~expected:expected_round
    ~provided:provided_round
  >>? fun () ->
  check_operation_branch
    ~expected:expected_content.branch
    ~provided:operation_branch
  >>? fun () ->
  check_payload_hash
    apply_mode
    ~expected:expected_content.payload_hash
    ~provided:content.block_payload_hash

(* Validate the 'operation.shell.branch' field of the operation. It MUST point
   to the grandfather: the block hash used in the payload_hash. Otherwise we could produce
   a preendorsement pointing to the direct proposal. This preendorsement wouldn't be able to
   propagate for a subsequent proposal using it as a locked_round evidence. *)
let validate_consensus_contents (type kind) ctxt chain_id
    (operation_kind : kind consensus_operation_type)
    (operation : kind operation) (apply_mode : apply_mode)
    (content : consensus_content) :
    (context * public_key_hash * int) tzresult Lwt.t =
  let current_level = Level.current ctxt in
  let proposal_level = get_predecessor_level apply_mode in
  let slot_map =
    match operation_kind with
    | Preendorsement -> Consensus.allowed_preendorsements ctxt
    | Endorsement -> Consensus.allowed_endorsements ctxt
  in
  compute_expected_consensus_content
    ~current_level
    ~proposal_level
    ctxt
    apply_mode
    operation_kind
    content.round
    content.level
  >>=? fun (ctxt, expected_content) ->
  check_consensus_content
    apply_mode
    content
    operation.shell.branch
    operation_kind
    expected_content
  >>?= fun () ->
  match Slot.Map.find content.slot slot_map with
  | None -> fail Wrong_slot_used_for_consensus_operation
  | Some (delegate_pk, delegate_pkh, voting_power) ->
      Delegate.frozen_deposits ctxt delegate_pkh >>=? fun frozen_deposits ->
      fail_unless
        Tez.(frozen_deposits.current_amount > zero)
        (Zero_frozen_deposits delegate_pkh)
      >>=? fun () ->
      Operation.check_signature delegate_pk chain_id operation >>?= fun () ->
      return (ctxt, delegate_pkh, voting_power)

let apply_manager_contents_list ctxt mode ~payload_producer chain_id
    prechecked_contents_list =
  apply_manager_contents_list_rec
    ctxt
    mode
    ~payload_producer
    chain_id
    prechecked_contents_list
  >>= fun (ctxt_result, results) ->
  match ctxt_result with
  | Failure -> Lwt.return (ctxt (* backtracked *), mark_backtracked results)
  | Success ctxt ->
      Lazy_storage.cleanup_temporaries ctxt >|= fun ctxt -> (ctxt, results)

let check_denunciation_age ctxt kind given_level =
  let max_slashing_period = Constants.max_slashing_period ctxt in
  let current_cycle = (Level.current ctxt).cycle in
  let given_cycle = (Level.from_raw ctxt given_level).cycle in
  let last_slashable_cycle = Cycle.add given_cycle max_slashing_period in
  fail_when
    Cycle.(given_cycle > current_cycle)
    (Too_early_denunciation
       {kind; level = given_level; current = (Level.current ctxt).level})
  >>=? fun () ->
  fail_unless
    Cycle.(last_slashable_cycle > current_cycle)
    (Outdated_denunciation
       {kind; level = given_level; last_cycle = last_slashable_cycle})

let punish_delegate ctxt delegate level mistake mk_result ~payload_producer =
  let (already_slashed, punish) =
    match mistake with
    | `Double_baking ->
        ( Delegate.already_slashed_for_double_baking,
          Delegate.punish_double_baking )
    | `Double_endorsing ->
        ( Delegate.already_slashed_for_double_endorsing,
          Delegate.punish_double_endorsing )
  in
  already_slashed ctxt delegate level >>=? fun slashed ->
  fail_when slashed Unrequired_denunciation >>=? fun () ->
  punish ctxt delegate level >>=? fun (ctxt, burned, punish_balance_updates) ->
  (match Tez.(burned /? 2L) with
  | Ok reward ->
      Token.transfer
        ctxt
        `Double_signing_evidence_rewards
        (`Contract (Contract.implicit_contract payload_producer))
        reward
  | Error _ -> (* reward is Tez.zero *) return (ctxt, []))
  >|=? fun (ctxt, reward_balance_updates) ->
  let balance_updates = reward_balance_updates @ punish_balance_updates in
  (ctxt, Single_result (mk_result balance_updates))

let punish_double_endorsement_or_preendorsement (type kind) ctxt ~chain_id
    ~preendorsement ~(op1 : kind Kind.consensus Operation.t)
    ~(op2 : kind Kind.consensus Operation.t) ~payload_producer :
    (t * kind Kind.double_consensus_operation_evidence contents_result_list)
    tzresult
    Lwt.t =
  let mk_result (balance_updates : Receipt.balance_updates) :
      kind Kind.double_consensus_operation_evidence contents_result =
    match op1.protocol_data.contents with
    | Single (Preendorsement _) ->
        Double_preendorsement_evidence_result balance_updates
    | Single (Endorsement _) ->
        Double_endorsement_evidence_result balance_updates
  in
  match (op1.protocol_data.contents, op2.protocol_data.contents) with
  | (Single (Preendorsement e1), Single (Preendorsement e2))
  | (Single (Endorsement e1), Single (Endorsement e2)) ->
      let kind = if preendorsement then Preendorsement else Endorsement in
      let op1_hash = Operation.hash op1 in
      let op2_hash = Operation.hash op2 in
      fail_unless
        (Raw_level.(e1.level = e2.level)
        && Round.(e1.round = e2.round)
        && (not
              (Block_payload_hash.equal
                 e1.block_payload_hash
                 e2.block_payload_hash))
        && (* we require an order on hashes to avoid the existence of
              equivalent evidences *)
        Operation_hash.(op1_hash < op2_hash))
        (Invalid_denunciation kind)
      >>=? fun () ->
      (* Disambiguate: levels are equal *)
      let level = Level.from_raw ctxt e1.level in
      check_denunciation_age ctxt kind level.level >>=? fun () ->
      Stake_distribution.slot_owner ctxt level e1.slot
      >>=? fun (ctxt, (delegate1_pk, delegate1)) ->
      Stake_distribution.slot_owner ctxt level e2.slot
      >>=? fun (ctxt, (_delegate2_pk, delegate2)) ->
      fail_unless
        (Signature.Public_key_hash.equal delegate1 delegate2)
        (Inconsistent_denunciation {kind; delegate1; delegate2})
      >>=? fun () ->
      let (delegate_pk, delegate) = (delegate1_pk, delegate1) in
      Operation.check_signature delegate_pk chain_id op1 >>?= fun () ->
      Operation.check_signature delegate_pk chain_id op2 >>?= fun () ->
      punish_delegate
        ctxt
        delegate
        level
        `Double_endorsing
        mk_result
        ~payload_producer

let punish_double_baking ctxt chain_id bh1 bh2 ~payload_producer =
  let hash1 = Block_header.hash bh1 in
  let hash2 = Block_header.hash bh2 in
  Fitness.from_raw bh1.shell.fitness >>?= fun bh1_fitness ->
  let round1 = Fitness.round bh1_fitness in
  Fitness.from_raw bh2.shell.fitness >>?= fun bh2_fitness ->
  let round2 = Fitness.round bh2_fitness in
  ( Raw_level.of_int32 bh1.shell.level >>?= fun level1 ->
    Raw_level.of_int32 bh2.shell.level >>?= fun level2 ->
    fail_unless
      (Compare.Int32.(bh1.shell.level = bh2.shell.level)
      && Round.(round1 = round2)
      && (* we require an order on hashes to avoid the existence of
            equivalent evidences *)
      Block_hash.(hash1 < hash2))
      (Invalid_double_baking_evidence
         {hash1; level1; round1; hash2; level2; round2}) )
  >>=? fun () ->
  Raw_level.of_int32 bh1.shell.level >>?= fun raw_level ->
  check_denunciation_age ctxt Block raw_level >>=? fun () ->
  let level = Level.from_raw ctxt raw_level in
  let committee_size = Constants.consensus_committee_size ctxt in
  Round.to_slot round1 ~committee_size >>?= fun slot1 ->
  Stake_distribution.slot_owner ctxt level slot1
  >>=? fun (ctxt, (delegate1_pk, delegate1)) ->
  Round.to_slot round2 ~committee_size >>?= fun slot2 ->
  Stake_distribution.slot_owner ctxt level slot2
  >>=? fun (ctxt, (_delegate2_pk, delegate2)) ->
  fail_unless
    Signature.Public_key_hash.(delegate1 = delegate2)
    (Inconsistent_denunciation {kind = Block; delegate1; delegate2})
  >>=? fun () ->
  let (delegate_pk, delegate) = (delegate1_pk, delegate1) in
  Block_header.check_signature bh1 chain_id delegate_pk >>?= fun () ->
  Block_header.check_signature bh2 chain_id delegate_pk >>?= fun () ->
  punish_delegate
    ctxt
    delegate
    level
    `Double_baking
    ~payload_producer
    (fun balance_updates -> Double_baking_evidence_result balance_updates)

let is_parent_endorsement ctxt ~proposal_level ~grand_parent_round
    (operation : 'a operation) (operation_content : consensus_content) =
  match Consensus.grand_parent_branch ctxt with
  | None -> false
  | Some (great_grand_parent_hash, grand_parent_payload_hash) ->
      (* Check level *)
      Raw_level.(proposal_level.Level.level = succ operation_content.level)
      (* Check round *)
      && Round.(grand_parent_round = operation_content.round)
      (* Check payload *)
      && Block_payload_hash.(
           grand_parent_payload_hash = operation_content.block_payload_hash)
      && (* Check branch *)
      Block_hash.(great_grand_parent_hash = operation.shell.branch)

let validate_grand_parent_endorsement ctxt chain_id
    (op : Kind.endorsement operation) =
  match op.protocol_data.contents with
  | Single (Endorsement e) ->
      let level = Level.from_raw ctxt e.level in
      Stake_distribution.slot_owner ctxt level e.slot
      >>=? fun (ctxt, (delegate_pk, pkh)) ->
      Operation.check_signature delegate_pk chain_id op >>?= fun () ->
      Consensus.record_grand_parent_endorsement ctxt pkh >>?= fun ctxt ->
      return
        ( ctxt,
          Single_result
            (Endorsement_result
               {
                 balance_updates = [];
                 delegate = pkh;
                 endorsement_power =
                   0 (* dummy endorsement power: this will never be used *);
               }) )

let apply_contents_list (type kind) ctxt chain_id (apply_mode : apply_mode) mode
    ~payload_producer (operation : kind operation)
    (contents_list : kind contents_list) :
    (context * kind contents_result_list) tzresult Lwt.t =
  let mempool_mode =
    match apply_mode with
    | Partial_construction _ -> true
    | Full_construction _ | Application _ -> false
  in
  match[@coq_match_with_default] contents_list with
  | Single (Preendorsement consensus_content) ->
      validate_consensus_contents
        ctxt
        chain_id
        Preendorsement
        operation
        apply_mode
        consensus_content
      >>=? fun (ctxt, delegate, voting_power) ->
      Consensus.record_preendorsement
        ctxt
        ~initial_slot:consensus_content.slot
        ~power:voting_power
        consensus_content.round
      >>?= fun ctxt ->
      return
        ( ctxt,
          Single_result
            (Preendorsement_result
               {
                 balance_updates = [];
                 delegate;
                 preendorsement_power = voting_power;
               }) )
  | Single (Endorsement consensus_content) -> (
      let proposal_level = get_predecessor_level apply_mode in
      match apply_mode with
      | Partial_construction {grand_parent_round; _}
        when is_parent_endorsement
               ctxt
               ~proposal_level
               ~grand_parent_round
               operation
               consensus_content ->
          validate_grand_parent_endorsement ctxt chain_id operation
      | _ ->
          validate_consensus_contents
            ctxt
            chain_id
            Endorsement
            operation
            apply_mode
            consensus_content
          >>=? fun (ctxt, delegate, voting_power) ->
          Consensus.record_endorsement
            ctxt
            ~initial_slot:consensus_content.slot
            ~power:voting_power
          >>?= fun ctxt ->
          return
            ( ctxt,
              Single_result
                (Endorsement_result
                   {
                     balance_updates = [];
                     delegate;
                     endorsement_power = voting_power;
                   }) ))
  | Single (Seed_nonce_revelation {level; nonce}) ->
      let level = Level.from_raw ctxt level in
      Nonce.reveal ctxt level nonce >>=? fun ctxt ->
      let tip = Constants.seed_nonce_revelation_tip ctxt in
      let contract = Contract.implicit_contract payload_producer in
      Token.transfer ctxt `Revelation_rewards (`Contract contract) tip
      >|=? fun (ctxt, balance_updates) ->
      (ctxt, Single_result (Seed_nonce_revelation_result balance_updates))
  | Single (Double_preendorsement_evidence {op1; op2}) ->
      punish_double_endorsement_or_preendorsement
        ctxt
        ~preendorsement:true
        ~chain_id
        ~op1
        ~op2
        ~payload_producer
  | Single (Double_endorsement_evidence {op1; op2}) ->
      punish_double_endorsement_or_preendorsement
        ctxt
        ~preendorsement:false
        ~chain_id
        ~op1
        ~op2
        ~payload_producer
  | Single (Double_baking_evidence {bh1; bh2}) ->
      punish_double_baking ctxt chain_id bh1 bh2 ~payload_producer
  | Single (Activate_account {id = pkh; activation_code}) ->
      let blinded_pkh =
        Blinded_public_key_hash.of_ed25519_pkh activation_code pkh
      in
      let src = `Collected_commitments blinded_pkh in
      Token.allocated ctxt src >>=? fun src_exists ->
      fail_unless src_exists (Invalid_activation {pkh}) >>=? fun _ ->
      let contract = Contract.implicit_contract (Signature.Ed25519 pkh) in
      Token.balance ctxt src >>=? fun amount ->
      Token.transfer ctxt src (`Contract contract) amount
      >>=? fun (ctxt, bupds) ->
      return (ctxt, Single_result (Activate_account_result bupds))
  | Single (Proposals {source; period; proposals}) ->
      Delegate.pubkey ctxt source >>=? fun delegate ->
      Operation.check_signature delegate chain_id operation >>?= fun () ->
      Voting_period.get_current ctxt >>=? fun {index = current_period; _} ->
      error_unless
        Compare.Int32.(current_period = period)
        (Wrong_voting_period (current_period, period))
      >>?= fun () ->
      Amendment.record_proposals ctxt source proposals >|=? fun ctxt ->
      (ctxt, Single_result Proposals_result)
  | Single (Ballot {source; period; proposal; ballot}) ->
      Delegate.pubkey ctxt source >>=? fun delegate ->
      Operation.check_signature delegate chain_id operation >>?= fun () ->
      Voting_period.get_current ctxt >>=? fun {index = current_period; _} ->
      error_unless
        Compare.Int32.(current_period = period)
        (Wrong_voting_period (current_period, period))
      >>?= fun () ->
      Amendment.record_ballot ctxt source proposal ballot >|=? fun ctxt ->
      (ctxt, Single_result Ballot_result)
  | Single (Failing_noop _) ->
      (* Failing_noop _ always fails *)
      fail Failing_noop_error
  | Single (Manager_operation _) as op ->
      precheck_manager_contents_list ctxt op ~mempool_mode
      >>=? fun (ctxt, prechecked_contents_list) ->
      check_manager_signature ctxt chain_id op operation >>=? fun () ->
      apply_manager_contents_list
        ctxt
        mode
        ~payload_producer
        chain_id
        prechecked_contents_list
      >|= ok
  | Cons (Manager_operation _, _) as op ->
      precheck_manager_contents_list ctxt op ~mempool_mode
      >>=? fun (ctxt, prechecked_contents_list) ->
      check_manager_signature ctxt chain_id op operation >>=? fun () ->
      apply_manager_contents_list
        ctxt
        mode
        ~payload_producer
        chain_id
        prechecked_contents_list
      >|= ok

let apply_operation ctxt chain_id (apply_mode : apply_mode) mode
    ~payload_producer hash operation =
  let ctxt = Contract.init_origination_nonce ctxt hash in
  let ctxt = record_operation ctxt operation in
  apply_contents_list
    ctxt
    chain_id
    apply_mode
    mode
    ~payload_producer
    operation
    operation.protocol_data.contents
  >|=? fun (ctxt, result) ->
  let ctxt = Gas.set_unlimited ctxt in
  let ctxt = Contract.unset_origination_nonce ctxt in
  (ctxt, {contents = result})

let may_start_new_cycle ctxt =
  match Level.dawn_of_a_new_cycle ctxt with
  | None -> return (ctxt, [], [])
  | Some last_cycle ->
      Seed.cycle_end ctxt last_cycle >>=? fun (ctxt, unrevealed) ->
      Delegate.cycle_end ctxt last_cycle unrevealed
      >>=? fun (ctxt, balance_updates, deactivated) ->
      Bootstrap.cycle_end ctxt last_cycle >|=? fun ctxt ->
      (ctxt, balance_updates, deactivated)

let init_allowed_consensus_operations ctxt ~endorsement_level
    ~preendorsement_level =
  Delegate.prepare_stake_distribution ctxt >>=? fun ctxt ->
  (if Level.(endorsement_level = preendorsement_level) then
   Baking.endorsing_rights_by_first_slot ctxt endorsement_level
   >>=? fun (ctxt, slots) ->
   let consensus_operations = slots in
   return (ctxt, consensus_operations, consensus_operations)
  else
    Baking.endorsing_rights_by_first_slot ctxt endorsement_level
    >>=? fun (ctxt, endorsements_slots) ->
    let endorsements = endorsements_slots in
    Baking.endorsing_rights_by_first_slot ctxt preendorsement_level
    >>=? fun (ctxt, preendorsements_slots) ->
    let preendorsements = preendorsements_slots in
    return (ctxt, endorsements, preendorsements))
  >>=? fun (ctxt, allowed_endorsements, allowed_preendorsements) ->
  return
    (Consensus.initialize_consensus_operation
       ctxt
       ~allowed_endorsements
       ~allowed_preendorsements)

let apply_liquidity_baking_subsidy ctxt ~escape_vote =
  Liquidity_baking.on_subsidy_allowed
    ctxt
    ~escape_vote
    (fun ctxt liquidity_baking_cpmm_contract ->
      let ctxt =
        (* We set a gas limit of 1/20th the block limit, which is ~10x
           actual usage here in Granada. Gas consumed is reported in
           the Transaction receipt, but not counted towards the block
           limit. The gas limit is reset to unlimited at the end of
           this function.*)
        Gas.set_limit
          ctxt
          (Gas.Arith.integral_exn
             (Z.div
                (Gas.Arith.integral_to_z
                   (Constants.hard_gas_limit_per_block ctxt))
                (Z.of_int 20)))
      in
      let backtracking_ctxt = ctxt in
      (let liquidity_baking_subsidy = Constants.liquidity_baking_subsidy ctxt in
       (* credit liquidity baking subsidy to CPMM contract *)
       Token.transfer
         ~origin:Subsidy
         ctxt
         `Liquidity_baking_subsidies
         (`Contract liquidity_baking_cpmm_contract)
         liquidity_baking_subsidy
       >>=? fun (ctxt, balance_updates) ->
       Script_cache.find ctxt liquidity_baking_cpmm_contract
       >>=? fun (ctxt, cache_key, script) ->
       match script with
       | None -> fail (Script_tc_errors.No_such_entrypoint "default")
       | Some (script, script_ir) -> (
           let now = Script_timestamp.now ctxt in
           let level =
             (Level.current ctxt).level |> Raw_level.to_int32
             |> Script_int.of_int32 |> Script_int.abs
           in
           let step_constants =
             let open Script_interpreter in
             (* Using dummy values for source, payer, and chain_id
                since they are not used within the CPMM default
                entrypoint. *)
             {
               source = liquidity_baking_cpmm_contract;
               payer = liquidity_baking_cpmm_contract;
               self = liquidity_baking_cpmm_contract;
               amount = liquidity_baking_subsidy;
               chain_id = Chain_id.zero;
               now;
               level;
             }
           in
           let parameter =
             Micheline.strip_locations
               Michelson_v1_primitives.(Prim (0, D_Unit, [], []))
           in
           (*
                 Call CPPM default entrypoint with parameter Unit.
                 This is necessary for the CPMM's xtz_pool in storage to
                 increase since it cannot use BALANCE due to a transfer attack.

                 Mimicks a transaction.

                 There is no:
                 - storage burn (extra storage is free)
                 - fees (the operation is mandatory)
          *)
           Script_interpreter.execute
             ctxt
             Optimized
             step_constants
             ~script
             ~parameter
             ~cached_script:(Some script_ir)
             ~entrypoint:"default"
             ~internal:false
           >>=? fun ( {ctxt; storage; lazy_storage_diff; operations},
                      (updated_cached_script, updated_size) ) ->
           match operations with
           | _ :: _ ->
               (* No internal operations are expected here. Something bad may be happening. *)
               return (backtracking_ctxt, [])
           | [] ->
               (* update CPMM storage *)
               Contract.update_script_storage
                 ctxt
                 liquidity_baking_cpmm_contract
                 storage
                 lazy_storage_diff
               >>=? fun ctxt ->
               Fees.record_paid_storage_space
                 ctxt
                 liquidity_baking_cpmm_contract
               >>=? fun (ctxt, new_size, paid_storage_size_diff) ->
               let consumed_gas =
                 Gas.consumed ~since:backtracking_ctxt ~until:ctxt
               in
               Script_cache.update
                 ctxt
                 cache_key
                 ( {script with storage = Script.lazy_expr storage},
                   updated_cached_script )
                 updated_size
               >>?= fun ctxt ->
               let result =
                 Transaction_result
                   {
                     storage = Some storage;
                     lazy_storage_diff;
                     balance_updates;
                     (* At this point in application the origination nonce has not been initialized so it's not possible to originate new contracts. We've checked above that none were originated. *)
                     originated_contracts = [];
                     consumed_gas;
                     storage_size = new_size;
                     paid_storage_size_diff;
                     allocated_destination_contract = false;
                   }
               in
               let ctxt = Gas.set_unlimited ctxt in
               return (ctxt, [Successful_manager_result result])))
      >|= function
      | Ok (ctxt, results) -> Ok (ctxt, results)
      | Error _ ->
          (* Do not fail if something bad happens during CPMM contract call. *)
          let ctxt = Gas.set_unlimited backtracking_ctxt in
          Ok (ctxt, []))

type 'a full_construction = {
  ctxt : t;
  protocol_data : 'a;
  payload_producer : Signature.public_key_hash;
  block_producer : Signature.public_key_hash;
  round : Round.t;
  implicit_operations_results : packed_successful_manager_operation_result list;
  liquidity_baking_escape_ema : Liquidity_baking.escape_ema;
}

let begin_full_construction ctxt ~predecessor_timestamp ~predecessor_level
    ~predecessor_round ~round protocol_data =
  let round_durations = Constants.round_durations ctxt in
  let timestamp = Timestamp.current ctxt in
  Block_header.check_timestamp
    round_durations
    ~timestamp
    ~round
    ~predecessor_timestamp
    ~predecessor_round
  >>?= fun () ->
  let current_level = Level.current ctxt in
  Stake_distribution.baking_rights_owner ctxt current_level ~round
  >>=? fun (ctxt, _slot, (_block_producer_pk, block_producer)) ->
  Delegate.frozen_deposits ctxt block_producer >>=? fun frozen_deposits ->
  fail_unless
    Tez.(frozen_deposits.current_amount > zero)
    (Zero_frozen_deposits block_producer)
  >>=? fun () ->
  Stake_distribution.baking_rights_owner
    ctxt
    current_level
    ~round:protocol_data.Block_header.payload_round
  >>=? fun (ctxt, _slot, (_payload_producer_pk, payload_producer)) ->
  init_allowed_consensus_operations
    ctxt
    ~endorsement_level:predecessor_level
    ~preendorsement_level:current_level
  >>=? fun ctxt ->
  let escape_vote = protocol_data.liquidity_baking_escape_vote in
  apply_liquidity_baking_subsidy ctxt ~escape_vote
  >|=? fun ( ctxt,
             liquidity_baking_operations_results,
             liquidity_baking_escape_ema ) ->
  {
    ctxt;
    protocol_data;
    payload_producer;
    block_producer;
    round;
    implicit_operations_results = liquidity_baking_operations_results;
    liquidity_baking_escape_ema;
  }

let begin_partial_construction ctxt ~predecessor_level ~escape_vote =
  (* In the mempool, only consensus operations for [predecessor_level]
     (that is, head's level) are allowed, contrary to block validation
     where endorsements are for the previous level and
     preendorsements, if any, for the block's level. *)
  init_allowed_consensus_operations
    ctxt
    ~endorsement_level:predecessor_level
    ~preendorsement_level:predecessor_level
  >>=? fun ctxt -> apply_liquidity_baking_subsidy ctxt ~escape_vote

let begin_application ctxt chain_id (block_header : Block_header.t) fitness
    ~predecessor_timestamp ~predecessor_level ~predecessor_round =
  let round = Fitness.round fitness in
  let current_level = Level.current ctxt in
  Stake_distribution.baking_rights_owner ctxt current_level ~round
  >>=? fun (ctxt, _slot, (block_producer_pk, block_producer)) ->
  let round_durations = Constants.round_durations ctxt in
  let timestamp = block_header.shell.timestamp in
  Block_header.begin_validate_block_header
    ~block_header
    ~chain_id
    ~predecessor_timestamp
    ~predecessor_round
    ~fitness
    ~timestamp
    ~delegate_pk:block_producer_pk
    ~round_durations
    ~proof_of_work_threshold:(Constants.proof_of_work_threshold ctxt)
    ~expected_commitment:current_level.expected_commitment
  >>?= fun () ->
  Delegate.frozen_deposits ctxt block_producer >>=? fun frozen_deposits ->
  fail_unless
    Tez.(frozen_deposits.current_amount > zero)
    (Zero_frozen_deposits block_producer)
  >>=? fun () ->
  Stake_distribution.baking_rights_owner
    ctxt
    current_level
    ~round:block_header.protocol_data.contents.payload_round
  >>=? fun (ctxt, _slot, (payload_producer_pk, _payload_producer)) ->
  init_allowed_consensus_operations
    ctxt
    ~endorsement_level:predecessor_level
    ~preendorsement_level:current_level
  >>=? fun ctxt ->
  let escape_vote =
    block_header.Block_header.protocol_data.contents
      .liquidity_baking_escape_vote
  in
  apply_liquidity_baking_subsidy ctxt ~escape_vote
  >|=? fun ( ctxt,
             liquidity_baking_operations_results,
             liquidity_baking_escape_ema ) ->
  ( ctxt,
    payload_producer_pk,
    block_producer,
    liquidity_baking_operations_results,
    liquidity_baking_escape_ema )

type finalize_application_mode =
  | Finalize_full_construction of {
      level : Raw_level.t;
      predecessor_round : Round.t;
    }
  | Finalize_application of Fitness.t

let compute_payload_hash (ctxt : Alpha_context.t) ~(predecessor : Block_hash.t)
    ~(payload_round : Round.t) : Block_payload_hash.t =
  let non_consensus_operations = non_consensus_operations ctxt in
  let operations_hash = Operation_list_hash.compute non_consensus_operations in
  Block_payload.hash ~predecessor payload_round operations_hash

let are_endorsements_required ctxt ~level =
  Alpha_context.First_level_of_tenderbake.get ctxt
  >|=? fun first_Tenderbake_level ->
  (* NB: the first level is the level of the migration block. This
     block was proposed by an Emmy* baker. There are no
     endorsements for this block. Therefore the block at the next
     level cannot contain endorsements. *)
  let tenderbake_level_position = Raw_level.diff level first_Tenderbake_level in
  Compare.Int32.(tenderbake_level_position > 1l)

let check_minimum_endorsements ~endorsing_power ~minimum =
  fail_when
    Compare.Int.(endorsing_power < minimum)
    (Not_enough_endorsements
       {required = minimum; endorsements = endorsing_power})

let finalize_application_check_validity ctxt (mode : finalize_application_mode)
    protocol_data ~round ~predecessor ~endorsing_power ~consensus_threshold
    ~required_endorsements =
  (if required_endorsements then
   check_minimum_endorsements ~endorsing_power ~minimum:consensus_threshold
  else return_unit)
  >>=? fun () ->
  let block_payload_hash =
    compute_payload_hash
      ctxt
      ~predecessor
      ~payload_round:protocol_data.Block_header.payload_round
  in
  let locked_round_evidence =
    Option.map
      (fun (preendorsement_round, preendorsement_count) ->
        Block_header.{preendorsement_round; preendorsement_count})
      (Consensus.locked_round_evidence ctxt)
  in
  (match mode with
  | Finalize_application fitness -> ok fitness
  | Finalize_full_construction {level; predecessor_round} ->
      let locked_round =
        match locked_round_evidence with
        | None -> None
        | Some {preendorsement_round; _} -> Some preendorsement_round
      in
      Fitness.create ~level ~round ~predecessor_round ~locked_round)
  >>?= fun fitness ->
  let checkable_payload_hash : Block_header.checkable_payload_hash =
    match mode with
    | Finalize_application _ -> Expected_payload_hash block_payload_hash
    | Finalize_full_construction _ -> (
        match locked_round_evidence with
        | Some _ -> Expected_payload_hash block_payload_hash
        | None ->
            (* In full construction, when there is no locked round
               evidence (and thus no preendorsements), the baker cannot
               know the payload hash before selecting the operations. We
               may dismiss checking the initially given
               payload_hash. However, to be valid, the baker must patch
               the resulting block header with the actual payload
               hash. *)
            No_check)
  in
  Block_header.finalize_validate_block_header
    ~block_header_contents:protocol_data
    ~round
    ~fitness
    ~checkable_payload_hash
    ~locked_round_evidence
    ~consensus_threshold
  >>?= fun () -> return (fitness, block_payload_hash)

let record_endorsing_participation ctxt =
  let validators = Consensus.allowed_endorsements ctxt in
  Slot.Map.fold_es
    (fun initial_slot (_delegate_pk, delegate, power) ctxt ->
      let participation =
        if Slot.Set.mem initial_slot (Consensus.endorsements_seen ctxt) then
          Delegate.Participated
        else Delegate.Didn't_participate
      in
      Delegate.record_endorsing_participation
        ctxt
        ~delegate
        ~participation
        ~endorsing_power:power)
    validators
    ctxt

let finalize_application ctxt (mode : finalize_application_mode) protocol_data
    ~payload_producer ~block_producer liquidity_baking_escape_ema
    implicit_operations_results ~round ~predecessor ~migration_balance_updates =
  let level = Alpha_context.Level.current ctxt in
  let block_endorsing_power = Consensus.current_endorsement_power ctxt in
  let consensus_threshold = Constants.consensus_threshold ctxt in
  are_endorsements_required ctxt ~level:level.level
  >>=? fun required_endorsements ->
  finalize_application_check_validity
    ctxt
    mode
    protocol_data
    ~round
    ~predecessor
    ~endorsing_power:block_endorsing_power
    ~consensus_threshold
    ~required_endorsements
  >>=? fun (fitness, block_payload_hash) ->
  (* from this point nothing should fail *)
  (* We mark the endorsement branch as the grand parent branch when
     accessible. This will not be present before the first two blocks
     of tenderbake. *)
  (match Consensus.endorsement_branch ctxt with
  | Some predecessor_branch ->
      Consensus.store_grand_parent_branch ctxt predecessor_branch >>= return
  | None -> return ctxt)
  >>=? fun ctxt ->
  (* We mark the current payload hash as the predecessor one => this
     will only be accessed by the successor block now. *)
  Consensus.store_endorsement_branch ctxt (predecessor, block_payload_hash)
  >>= fun ctxt ->
  Round.update ctxt round >>=? fun ctxt ->
  (* end of level  *)
  (match protocol_data.Block_header.seed_nonce_hash with
  | None -> return ctxt
  | Some nonce_hash ->
      Nonce.record_hash ctxt {nonce_hash; delegate = block_producer})
  >>=? fun ctxt ->
  (if required_endorsements then
   record_endorsing_participation ctxt >>=? fun ctxt ->
   Baking.bonus_baking_reward ctxt ~endorsing_power:block_endorsing_power
   >>?= fun rewards_bonus -> return (ctxt, Some rewards_bonus)
  else return (ctxt, None))
  >>=? fun (ctxt, reward_bonus) ->
  let baking_reward = Constants.baking_reward_fixed_portion ctxt in
  Delegate.record_baking_activity_and_pay_rewards_and_fees
    ctxt
    ~payload_producer
    ~block_producer
    ~baking_reward
    ~reward_bonus
  >>=? fun (ctxt, baking_receipts) ->
  (* end of cycle *)
  (if Level.may_snapshot_rolls ctxt then Stake_distribution.snapshot ctxt
  else return ctxt)
  >>=? fun ctxt ->
  may_start_new_cycle ctxt
  >>=? fun (ctxt, cycle_end_balance_updates, deactivated) ->
  Amendment.may_start_new_voting_period ctxt >>=? fun ctxt ->
  let balance_updates =
    migration_balance_updates @ baking_receipts @ cycle_end_balance_updates
  in
  let consumed_gas =
    Gas.Arith.sub
      (Gas.Arith.fp @@ Constants.hard_gas_limit_per_block ctxt)
      (Gas.block_level ctxt)
  in
  Voting_period.get_rpc_current_info ctxt >|=? fun voting_period_info ->
  let receipt =
    Apply_results.
      {
        proposer = payload_producer;
        baker = block_producer;
        level_info = level;
        voting_period_info;
        nonce_hash = protocol_data.seed_nonce_hash;
        consumed_gas;
        deactivated;
        balance_updates;
        liquidity_baking_escape_ema;
        implicit_operations_results;
      }
  in
  (ctxt, fitness, receipt)

let value_of_key ctxt k = Cache.Admin.value_of_key ctxt k