51 lines
1.4 KiB
Solidity
51 lines
1.4 KiB
Solidity
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pragma solidity >0.6.11;
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// SPDX-License-Identifier: GPL-3.0-or-later
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contract AccountsIndexAddressDeclarator {
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address public tokenAddress;
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bytes32 tokenAddressHash;
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address public addressDeclaratorAddress;
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mapping(address => uint256) entryIndex;
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uint256 count;
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address public owner;
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address newOwner;
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event AddressAdded(address indexed addedAccount, uint256 indexed accountIndex); // AccountsIndex
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173
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constructor(address _tokenAddress, address _addressDeclaratorAddress) public {
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bytes memory _tokenAddressPadded;
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owner = msg.sender;
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addressDeclaratorAddress = _addressDeclaratorAddress;
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tokenAddress = _tokenAddress;
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_tokenAddressPadded = abi.encode(tokenAddress);
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tokenAddressHash = sha256(_tokenAddressPadded);
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count = 1;
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}
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function add(address _account) external returns (bool) {
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bool ok;
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bytes memory r;
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uint256 oldEntryIndex;
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(ok, r) = addressDeclaratorAddress.call(abi.encodeWithSignature("addDeclaration(address,bytes32)", _account, tokenAddressHash));
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require(ok);
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require(r[31] == 0x01);
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oldEntryIndex = count;
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entryIndex[_account] = oldEntryIndex;
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count++;
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emit AddressAdded(_account, oldEntryIndex);
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return true;
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}
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function have(address _account) external view returns (bool) {
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return entryIndex[_account] > 0;
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}
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}
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