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LATValidator

LATValidator​

LAT_TYPEHASH​

bytes32 LAT_TYPEHASH

_nonces​

mapping(uint256 => uint256) _nonces

validateCreditor​

modifier validateCreditor(address creditor, struct DataTypes.LoanAssetInfo info)

requireValidator​

modifier requireValidator(struct DataTypes.LoanAssetInfo info)

requireNonceValid​

modifier requireNonceValid(struct DataTypes.LoanAssetInfo info)

_checkNonceValid​

function _checkNonceValid(struct DataTypes.LoanAssetInfo info) internal

This function checks if nonces are valid for each tokenId in info.tokenIds array. It requires that the nonce at index i matches _nonces[info.tokenIds[i]]. If it does, then increment _nonces[info.tokenIds[i]] by one and emit a NonceChanged event.

Parameters​

NameTypeDescription
infostruct DataTypes.LoanAssetInfoLoanAssetInfo containing tokenIds and corresponding nonces.

__LATValidator_init​

function __LATValidator_init() internal

Initializes the contract, setting the name and version for EIP712 signature generation.

__LATValidator_init_unchained​

function __LATValidator_init_unchained() internal

isValidator​

function isValidator(address pool, address sender) public view virtual returns (bool)

nonce​

function nonce(uint256 tokenId) external view returns (uint256)

_Returns the nonce for a given token ID.

Requirements:

  • The index must exist._

Parameters​

NameTypeDescription
tokenIduint256The ID of the token to get the nonce of.

Return Values​

NameTypeDescription
[0]uint256The nonce of the token.

_checkValidator​

function _checkValidator(struct DataTypes.LoanAssetInfo latInfo) internal view returns (bool)

Checks if the provided loan asset information is valid.

The function takes in LoanAssetInfo struct which contains tokenIds, nonces and validator address. It calculates a hash of this data using keccak256 and abi encode. Then it checks if the signature is valid by calling isValidSignatureNow on the validator's address with the calculated digest and provided signature.

Parameters​

NameTypeDescription
latInfostruct DataTypes.LoanAssetInfoThe loan asset information to be checked.

Return Values​

NameTypeDescription
[0]boolbool Returns true if the signature is valid, false otherwise.

domainSeparatorV4​

function domainSeparatorV4() external view returns (bytes32)

Returns the domain separator used in the encoding of the signature for {permit}.