具有版税功能的托管智能合约

Question

我当前的Escrow.sol智能合约遇到了问题。 Escrow.sol 合同旨在成为“快乐中位数”，以防交易所内的两个人就商品或服务的质量、准确性或描述达成一致。 这是 Escrow.sol 合约代码：

    // SPDX-License-Identifier: MIT

pragma solidity 0.8.0;

contract Escrow {

  address payable public buyer;
  address payable public merchant;
  address public arbiter;
  uint public itemId;
  uint public amount;

  mapping(address => bool) public releaseAmount;
  mapping(address => bool) public refundAmount;

  uint public releaseVote;
  uint public refundVote;

  bool public fundsSuccess;
  address public holder;

constructor(uint _itemId, address payable _buyer, address payable _merchant, address _arbiter) payable {

      buyer = _buyer;
      merchant = _merchant;
      arbiter = _arbiter;
      fundsSuccess = false;
      amount = msg.value;
      holder = msg.sender;
      itemId = _itemId;
    }

function escrowDetails() view public returns(address, address, address, bool, uint, uint){
  return (buyer, merchant, arbiter, fundsSuccess, releaseVote, refundVote);
}

function releaseAmountToMerchant(address perso) public{
  require(fundsSuccess == false);
  require(msg.sender == holder);
    if ((perso == buyer || perso == merchant || perso == arbiter)  && releaseAmount[perso] != true){
      releaseAmount[perso] = true;
      releaseVote +=1;
    }
    if(releaseVote == 2){
      merchant.transfer(amount);
      fundsSuccess = true;
    }
}

  function refundAmountToBuyer(address perso) public{
    require(fundsSuccess == false);
    require(msg.sender == holder);
    if ((perso == buyer || perso == merchant || perso == arbiter)  && refundAmount[perso] != true){
      refundAmount[perso] = true;
      refundVote +=1;
  }
    if(refundVote == 2){
      buyer.transfer(amount);
      fundsSuccess = true;
    }

  }
}

托管1PNG

托管2PNG

我的想法是在托管合约中添加版税功能，使用下面的代码将 5% 的费用分散回选择的地址。 下面的版税代码用于 ERC1155 构建，但我正在尝试将其重用于 Escrow 实现。

 /** @dev EIP2981 royalties implementation. */

// Maintain flexibility to modify royalties recipient (could also add basis points).
function _setRoyalties(address newRecipient) internal {
    require(
        newRecipient != address(0),
        "Royalties: new recipient is the zero address"
    );
    _recipient = newRecipient;
}

function setRoyalties(address newRecipient) external onlyOwner {
    _setRoyalties(newRecipient);
}

// EIP2981 standard royalties return.
function royaltyInfo(uint256 _tokenId, uint256 _salePrice)
    external
    view
    override
    returns (address receiver, uint256 royaltyAmount)
{
    return (_recipient, (_salePrice * 1000) / 10000);
}

我从 Solidity 的 RemixeIDE 第 63 行收到此错误：ParserError: Expected '(' but got identifier

--> 托管.sol:63:14: | 63 | function _setRoyaltiesaddress newRecipient) internal { | ^^^^^^^^^^^^^^^^^^^^

原始的托管合同编制了 100% 的罚款。 我正在寻找将下面的版税代码正确地纳入托管合同的方法。

欢迎任何修复、想法或想法。 非常感谢您抽出宝贵的时间。