AssetTransfers

Git Source

Inherits: BaseUtils

Title: Token transfer contract - should work across all EVMs - use Uniswap style Permit2

State Variables

CALL_MANAGEMENT_APPROVALS

bytes32 private constant CALL_MANAGEMENT_APPROVALS = 0x1aae13105d9b6581c36534caba5708726e5ea1e03175e823c989a5756966d1f3

PERMIT2_TRANSFER_FROM

fixed selector transferFrom(...) on permit2

bytes32 private constant PERMIT2_TRANSFER_FROM = 0x36c7851600000000000000000000000000000000000000000000000000000000

PERMIT2

deterministically deployed pemrit2 address

address private constant PERMIT2 = 0x000000000022D473030F116dDEE9F6B43aC78BA3

Functions

_permit2TransferFrom

Transfers tokens from caller to this address using Permit2

Zero amount flags that the entire balance is sent

Note: calldata-offset-table:

function _permit2TransferFrom(uint256 currentOffset, address callerAddress) internal returns (uint256);

Parameters

Returns

_transferFrom

Transfers tokens from caller to this address

Zero amount flags that the entire balance is sent

Note: calldata-offset-table:

function _transferFrom(uint256 currentOffset, address callerAddress) internal returns (uint256);

Parameters

Returns

_sweep

Transfers either token or native balance from this contract to receiver

Reverts if minAmount is less than the contract balance. Config: 0 = sweep balance and validate against amount (fetches balance and checks balance >= amount), 1 = transfer amount to receiver, skip validation. Use wrapped native address as receiver to wrap native tokens. amount:=0 and config:=0 means to sweep the entire balance

Note: calldata-offset-table:

function _sweep(uint256 currentOffset) internal returns (uint256);

Parameters

Returns

_approve

Approves a token for a target address

Skips approval if already approved to save gas. Uses a storage mapping to track approvals: keccak256(target, keccak256(token, CALL_MANAGEMENT_APPROVALS)) -> boolean (1 if approved, 0 if not). If the mapping value is 0, the function approves MAX_UINT256 to the target and sets the mapping to 1.

Note: calldata-offset-table:

function _approve(uint256 currentOffset) internal returns (uint256);

Parameters

Returns

_unwrap

Unwraps wrapped native tokens and transfers to receiver

Reverts if minAmount is less than the contract balance. Config: 0 = sweep balance and validate against amount (fetches balance and checks balance >= amount), 1 = transfer amount to receiver, skip validation.

Note: calldata-offset-table:

function _unwrap(uint256 currentOffset) internal virtual returns (uint256);

Parameters

Returns