EIP712WithNonce

NonceUsed

event NonceUsed(address user, uint256 timeline, uint256 nonce)

InvalidNonce

error InvalidNonce(uint256 nonce)

_nonces

mapping(address => mapping(uint256 => uint256)) _nonces

DOMAIN_SEPARATOR

function DOMAIN_SEPARATOR() external view returns (bytes32)

Domain Separator as defined in EIP712

Name	Type	Description
[0]	bytes32	keccak256(typeHash, nameHash, versionHash, block.chainid, address(this))

getNonce

function getNonce(address from) public view virtual returns (uint256)

Gets nonce for the from address in the "default" timeline

For a detailed explanation: https://github.com/amxx/permit#out-of-order-execution

Name	Type	Description
from	address	address

Name	Type	Description
[0]	uint256	nonce

getNonce

function getNonce(address from, uint256 timeline) public view virtual returns (uint256)

Gets nonce for the from address in the specified timeline

For a detailed explanation: https://github.com/amxx/permit#out-of-order-execution

Name	Type	Description
from	address	address
timeline	uint256	where the nonce lives

Name	Type	Description
[0]	uint256	nonce

_verifyAndConsumeNonce

function _verifyAndConsumeNonce(address user, uint256 fullNonce) internal virtual

Extract timeline from nonce, iterates it to consume it, checks for replay protection.

emits NonceUsed(user, timeline, nonce). WARNING: Failed transactions would not consume a nonce, since the reverted transaction won't be able to save in storage.

Name	Type	Description
user	address	address sending the nonce.
fullNonce	uint256	nonce and timeline info in uint256 space