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32 lines
879 B
Solidity
32 lines
879 B
Solidity
2 years ago
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// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts (last updated v4.6.0) (governance/extensions/GovernorVotes.sol)
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pragma solidity ^0.8.0;
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import "../Governor.sol";
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import "../utils/IVotes.sol";
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/**
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* @dev Extension of {Governor} for voting weight extraction from an {ERC20Votes} token, or since v4.5 an {ERC721Votes} token.
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*
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* _Available since v4.3._
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*/
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abstract contract GovernorVotes is Governor {
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IVotes public immutable token;
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constructor(IVotes tokenAddress) {
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token = tokenAddress;
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}
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/**
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* Read the voting weight from the token's built in snapshot mechanism (see {Governor-_getVotes}).
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*/
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function _getVotes(
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address account,
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uint256 blockNumber,
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bytes memory /*params*/
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) internal view virtual override returns (uint256) {
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return token.getPastVotes(account, blockNumber);
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}
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}
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