0b0cbe1286
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com> Co-authored-by: ernestognw <ernestognw@gmail.com>
22 lines
726 B
Solidity
22 lines
726 B
Solidity
// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts (last updated v5.4.0-rc.0) (account/utils/EIP7702Utils.sol)
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pragma solidity ^0.8.20;
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/**
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* @dev Library with common EIP-7702 utility functions.
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*
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* See https://eips.ethereum.org/EIPS/eip-7702[ERC-7702].
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*/
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library EIP7702Utils {
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bytes3 internal constant EIP7702_PREFIX = 0xef0100;
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/**
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* @dev Returns the address of the delegate if `account` as an EIP-7702 delegation setup, or address(0) otherwise.
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*/
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function fetchDelegate(address account) internal view returns (address) {
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bytes23 delegation = bytes23(account.code);
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return bytes3(delegation) == EIP7702_PREFIX ? address(bytes20(delegation << 24)) : address(0);
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}
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}
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