EIP712Facet

Asset Tokenization Studio Team

EIP712Facet

Diamond facet that exposes the EIP-712 domain separator via IEIP712, registered under RESOLVER_KEY_EIP712.

Exposes one selector: DOMAIN_SEPARATOR.

Methods

DOMAIN_SEPARATOR

function DOMAIN_SEPARATOR() external view returns (bytes32 domainSeparator_)

Returns the EIP-712 domain separator for this contract.

Computed from the token name, resolver-proxy version, chain ID, and the diamond address. The value changes when any of those inputs change (e.g. after a chain fork or a proxy version upgrade).

Returns

Name	Type	Description
domainSeparator_	bytes32	The EIP-712 domain separator hash.

getStaticFunctionSelectors

function getStaticFunctionSelectors() external pure returns (bytes4[])

Gets all function selectors of a facet

Returns

Name	Type	Description
_0	bytes4[]	Face functions selectors

getStaticInterfaceIds

function getStaticInterfaceIds() external pure returns (bytes4[])

Gets all interfaces ids of a facet.

Returns

Name	Type	Description
_0	bytes4[]	Face interface ids

getStaticResolverKey

function getStaticResolverKey() external pure returns (bytes32 staticResolverKey_)

Gets the static resolver key

Returns

Name	Type	Description
staticResolverKey_	bytes32	Static resolver key

initializeEIP712

function initializeEIP712() external nonpayable

Initialises the EIP-712 capability on the token.

Callable once; subsequent calls revert with FacetAlreadyRegistered. Requires DEFAULT_ADMIN_ROLE. Called by the factory during deployment.

Events

EIP712Initialized

event EIP712Initialized()

Emitted once when the EIP-712 capability is initialised on a token.

Fires exclusively from initializeEIP712.

Errors

AccountHasNoRole

error AccountHasNoRole(address account, bytes32 role)

Thrown when an account does not hold a required role.

Parameters

Name	Type	Description
account	address	The account that lacks the role.
role	bytes32	The role that is not held.

FacetAlreadyRegistered

error FacetAlreadyRegistered(bytes32 facetId, uint256 lastVersion)

Raised when an initialiser tries to register a facet that already has a non-zero last registered version (i.e. the facet is being re-initialised on a fresh install).

Parameters

Name	Type	Description
facetId	bytes32	Identifier of the offending facet.
lastVersion	uint256	Last version recorded for that facet at the time of the check.

UnrecognizedResolverProxyVersion

error UnrecognizedResolverProxyVersion(bytes8 _resolverProxyVersion)

Thrown when the provided proxy version does not match any BLR compatible standard.

Parameters

Name	Type	Description
_resolverProxyVersion	bytes8	proxy version that is not compatible with the BLR.

WalletRecovered

error WalletRecovered()

Thrown when attempting to recover a wallet that has already been recovered.