IERC 777 Recipient Upgradeable

Interface of the ERC777TokensRecipient standard as defined in the EIP. Accounts can be notified of {IERC777} tokens being sent to them by having a contract implement this interface (contract holders can be their own implementer) and registering it on the https://eips.ethereum.org/EIPS/eip-1820[ERC1820 global registry]. See {IERC1820Registry} and {ERC1820Implementer}.

Methods

tokensReceived

function tokensReceived(address operator, address from, address to, uint256 amount, bytes userData, bytes operatorData) external nonpayable

Called by an {IERC777} token contract whenever tokens are being moved or created into a registered account (to). The type of operation is conveyed by from being the zero address or not. This call occurs after the token contract's state is updated, so {IERC777-balanceOf}, etc., can be used to query the post-operation state. This function may revert to prevent the operation from being executed.

Parameters

Name	Type	Description
operator	address	undefined
from	address	undefined
to	address	undefined
amount	uint256	undefined
userData	bytes	undefined
operatorData	bytes	undefined