TokenHelper

Git Source

Author: Trader Joe

Wrappers around ERC20 operations that throw on failure (when the token contract returns false). Tokens that return no value (and instead revert or throw on failure) are also supported, non-reverting calls are assumed to be successful. To use this library you can add a using TokenHelper for IERC20; statement to your contract, which allows you to call the safe operation as token.safeTransfer(...)

Functions

safeTransferFrom

Transfers token and reverts if the transfer fails

function safeTransferFrom(IERC20 token, address owner, address recipient, uint256 amount) internal;

Parameters

Name	Type	Description
token	IERC20	The address of the token
owner	address	The owner of the tokens
recipient	address	The address of the recipient
amount	uint256	The amount to send

safeTransfer

Transfers token and reverts if the transfer fails

function safeTransfer(IERC20 token, address recipient, uint256 amount) internal;

Parameters

Name	Type	Description
token	IERC20	The address of the token
recipient	address	The address of the recipient
amount	uint256	The amount to send

_callAndCatch

function _callAndCatch(IERC20 token, bytes memory data) internal;

Errors

TokenHelper__TransferFailed

error TokenHelper__TransferFailed();