📂ZNSFixedPricer

ZNSFixedPricer

Pricer contract that uses the most straightforward fixed pricing model that doesn't depend on the length of the label.

PERCENTAGE_BASIS

uint256 PERCENTAGE_BASIS

encodeConfig

function encodeConfig(struct IZNSFixedPricer.FixedPriceConfig config) external pure returns (bytes)

Real encoding happens off chain, but we keep this here as a helper function for users to ensure that their data is correct

Parameters

Name	Type	Description
config	struct IZNSFixedPricer.FixedPriceConfig	The price to encode

decodePriceConfig

function decodePriceConfig(bytes priceConfig) public pure returns (struct IZNSFixedPricer.FixedPriceConfig)

Decodes the price config from bytes to FixedPriceConfig struct

Parameters

Name	Type	Description
priceConfig	bytes	The bytes to decode

getPrice

function getPrice(bytes parentPriceConfig, string label, bool skipValidityCheck) public pure returns (uint256)

Gets the price for a subdomain candidate label under the parent domain.

skipValidityCheck param is added to provide proper revert when the user is calling this to find out the price of a domain that is not valid. But in Registrar contracts we want to do this explicitly and before we get the price to have lower tx cost for reverted tx. So Registrars will pass this bool as "true" to not repeat the validity check. Note that if calling this function directly to find out the price, a user should always pass "false" as skipValidityCheck param, otherwise, the price will be returned for an invalid label that is not possible to register.

Parameters

Name	Type	Description
parentPriceConfig	bytes	The hash of the parent domain to check the price under
label	string	The label of the subdomain candidate to check the price for
skipValidityCheck	bool	If true, skips the validity check for the label

validatePriceConfig

function validatePriceConfig(bytes priceConfig) external pure

Verify that the given price config is valid for this pricer

Parameters

Name	Type	Description
priceConfig	bytes	The price config to validate

getFeeForPrice

function getFeeForPrice(bytes parentPriceConfig, uint256 price) public pure returns (uint256)

Part of the IZNSPricer interface - one of the functions required for any pricing contracts used with ZNS. It returns fee for a given price based on the value set by the owner of the parent domain.

Parameters

Name	Type	Description
parentPriceConfig	bytes	The price config in bytes of the parent domain under which fee is determined
price	uint256	The price for a domain

getPriceAndFee

function getPriceAndFee(bytes parentPriceConfig, string, bool) external pure returns (uint256 price, uint256 fee)

Part of the IZNSPricer interface - one of the functions required for any pricing contracts used with ZNS. Returns both price and fee for a given label under the given parent.

Parameters

Name	Type	Description
parentPriceConfig	bytes	The price config of the parent domain under which price and fee are determined
	string
	bool

_checkLength

function _checkLength(bytes priceConfig) internal pure

_getFeeForPrice

function _getFeeForPrice(uint256 feePercentage, uint256 price) internal pure returns (uint256)