MulticallExtension

this multicall extension is useful for chaining permissioned calls in other words, calls that operate on the senders funds or settings

error BlockHash(bytes32 expected, bytes32 actual)

error Deadline(uint256 deadline, uint256 currentTime)

event TxFailed(uint256 index, bytes result)

function multicall(bytes[] calls, bool allowFailures) external

call a series of functions on a contract that inherits this method

Name	Type	Description
calls	bytes[]	the calls to perform on this contract
allowFailures	bool	whether to allow failures or to error out

function multicallWithDeadline(uint256 deadline, bytes[] calls, bool allowFailures) external

call multiple methods and pass a deadline, after which the transaction should fail

Name	Type	Description
deadline	uint256	the timestamp, in seconds
calls	bytes[]	the calldata to run on the external method
allowFailures	bool	allows failures when true

function multicallWithPreviousBlockHash(bytes32 previousBlockhash, bytes[] calls, bool allowFailures) external

pass the previous block hash to enable mev uncle bandit protection

Name	Type	Description
previousBlockhash	bytes32	the previously mined block - useful for mev protected uncle bandit risks
calls	bytes[]	the calldata to run on the external method
allowFailures	bool	allows failures when true

function _multicall(bytes[] calls, bool allowFailures) internal

call multiple / arbitrary steps allowing each to fail independently or requiring all to succeed

Name	Type	Description
calls	bytes[]	the sequence of calls that is requested
allowFailures	bool	allows the calls to fail separately or requires all to succeed or fail