ERC20Votes for upgradability doesn't exist

novaknole · November 3, 2021, 11:24am

I am looking for the same kind of idea as ERC20Votes , but in an upgradability way. I saw this https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/tree/v3.3.0/contracts/token/ERC20 but none of those contain:

delegation
I don't like to get balanceOfAt with snapshotId. ERC20Votes have it getPastVotes with block.number.

Doesn't openzeppelin provide such thing ? It's really a pity....

Any good advice what I can do ?

frangio · November 3, 2021, 1:51pm

For some reason you're looking at the v3.3.0 tag. The contract doesn't exist on that version. Here it is in the latest version:

github.com

OpenZeppelin/openzeppelin-contracts-upgradeable/blob/v4.3.2/contracts/token/ERC20/extensions/ERC20VotesUpgradeable.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./draft-ERC20PermitUpgradeable.sol";
import "../../../utils/math/MathUpgradeable.sol";
import "../../../utils/math/SafeCastUpgradeable.sol";
import "../../../utils/cryptography/ECDSAUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @dev Extension of ERC20 to support Compound-like voting and delegation. This version is more generic than Compound's,
 * and supports token supply up to 2^224^ - 1, while COMP is limited to 2^96^ - 1.
 *
 * NOTE: If exact COMP compatibility is required, use the {ERC20VotesComp} variant of this module.
 *
 * This extension keeps a history (checkpoints) of each account's vote power. Vote power can be delegated either
 * by calling the {delegate} function directly, or by providing a signature to be used with {delegateBySig}. Voting
 * power can be queried through the public accessors {getVotes} and {getPastVotes}.
 *

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novaknole · November 3, 2021, 2:01pm

@frangio hmm, how could i miss this and why was I watching that tag version, no idea.

Thanks a lot.

Could you look into this as well ? Openzeppelin upgrades - new instance in a contract this has been left without any answer for 6days.

Thanks again in advance.

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ERC20Votes for upgradability doesn't exist

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