Wrapped SD Token

WrappedSDToken wraps rebasing liquid staking tokens (such as stLINK) with a normal ERC20 token.

ERC20 Functions

All standard ERC20 functions are implemented for WrappedSDToken

View Functions

sdToken

Returns the underlying staking receipt token that this contract wraps

function sdToken() external view returns (address)

Return Values

Name	Type	Description
sdToken	address	Address of staking receipt token

getWrappedByUnderlying

Returns the amount of wrapped tokens that corresponds an amount of unwrapped tokens

function getWrappedByUnderlying(uint256 _amount) external view returns (uint256)

Parameters

Name	Type	Description
_amount	uint256	Amount of unwrapped tokens

Return Values

Name	Type	Description
wrappedAmount	uint256	Amount of corresponding wrapped tokens

getUnderlyingByWrapped

Returns the amount of unwrapped tokens that corresponds to an amount of wrapped tokens

function getUnderlyingByWrapped(uint256 _amount) external view returns (uint256)

Parameters

Name	Type	Description
_amount	uint256	Amount of wrapped tokens

Return Values

Name	Type	Description
unwrappedAmount	uint256	Corresponding amount of unwrapped tokens

Write Functions

onTokenTransfer

ERC677 implementation that proxies wrapping

function onTokenTransfer(address _sender, uint256 _value, bytes) external

Parameters

Name	Type	Description
_sender	address	Sender of the token transfer
_value	uint256	Value of the token transfer
	bytes

wrap

Wraps tokens

function wrap(uint256 _amount) external

Parameters

Name	Type	Description
_amount	uint256	Amount of unwrapped tokens to wrap

unwrap

Unwraps tokens

function unwrap(uint256 _amount) external

Parameters

Name	Type	Description
_amount	uint256	Amount of wrapped tokens to unwrap

transferAndCall

Transfers tokens to an address and calls onTokenTransfer with additional data if the recipient is a contract

function transferAndCall(address _to, uint256 _value, bytes _data) external returns (bool)

Parameters

Name	Type	Description
_to	address	Address to send the tokens to
_value	uint256	Value of token transfer
_data	bytes	Calldata included in the transfer