40 lines
887 B
Solidity
40 lines
887 B
Solidity
pragma solidity ^0.6.12;
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// SPDX-License-Identifier: GPL-3.0-or-later
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contract CustodialAccountIndex {
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address[] public accounts;
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mapping(address => uint256) public accountsIndex;
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uint256 public count;
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mapping(address => bool) writers;
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address owner;
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event AccountAdded(address indexed addedAccount, uint256 indexed accountIndex);
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constructor() public {
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owner = msg.sender;
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accounts.push(address(0));
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count = 1;
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}
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function addWriter(address _writer) public {
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require(owner == msg.sender);
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writers[_writer] = true;
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}
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function deleteWriter(address _writer) public {
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require(owner == msg.sender);
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delete writers[_writer];
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}
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function add(address _account) public {
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require(writers[msg.sender]);
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require(accountsIndex[_account] == 0);
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accounts.push(_account);
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accountsIndex[_account] = count;
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count++;
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emit AccountAdded(_account, count-1);
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}
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}
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