IERC20Extended

Git Source

Inherits: IERC20, IERC3009

Author: M^0 Labs

The additional interface as defined by EIP-2612: https://eips.ethereum.org/EIPS/eip-2612

Functions

permit

Approves spender to spend up to amount of the token balance of owner, via a signature.

function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s)
    external;

Parameters

Name	Type	Description
owner	address	The address of the account who's token balance is being approved to be spent by spender.
spender	address	The address of an account allowed to spend on behalf of owner.
value	uint256	The amount of the allowance being approved.
deadline	uint256	The last block number where the signature is still valid.
v	uint8	An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).
r	bytes32	An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).
s	bytes32	An ECDSA secp256k1 signature parameter (EIP-2612 via EIP-712).

permit

Approves spender to spend up to amount of the token balance of owner, via a signature.

function permit(address owner, address spender, uint256 value, uint256 deadline, bytes memory signature) external;

Parameters

Name	Type	Description
owner	address	The address of the account who's token balance is being approved to be spent by spender.
spender	address	The address of an account allowed to spend on behalf of owner.
value	uint256	The amount of the allowance being approved.
deadline	uint256	The last block number where the signature is still valid.
signature	bytes	An arbitrary signature (EIP-712).

PERMIT_TYPEHASH

Returns the EIP712 typehash used in the encoding of the digest for the permit function.

function PERMIT_TYPEHASH() external view returns (bytes32);

Errors

InsufficientAllowance

Revert message when spender's allowance is not sufficient.

error InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

Parameters

Name	Type	Description
spender	address	Address that may be allowed to operate on tokens without being their owner.
allowance	uint256	Amount of tokens a spender is allowed to operate with.
needed	uint256	Minimum amount required to perform a transfer.

InsufficientAmount

Revert message emitted when the transferred amount is insufficient.

error InsufficientAmount(uint256 amount);

Parameters

Name	Type	Description
amount	uint256	Amount transferred.

InvalidRecipient

Revert message emitted when the recipient of a token is invalid.

error InvalidRecipient(address recipient);

Parameters

Name	Type	Description
recipient	address	Address of the invalid recipient.