IWLSETHV1

Kiln

Wrapped LsETH Interface (v1)

This interface exposes methods to wrap the LsETH token into a rebase token.

Methods

allowance

function allowance(address _owner, address _spender) external view returns (uint256)

Retrieves the token allowance given from one address to another

Parameters

Name	Type	Description
_owner	address	Owner that gave the allowance
_spender	address	Spender that received the allowance

Returns

Name	Type	Description
_0	uint256	The allowance of the owner to the spender

approve

function approve(address _spender, uint256 _value) external nonpayable returns (bool)

Approves another account to transfer tokens

Parameters

Name	Type	Description
_spender	address	Spender that receives the allowance
_value	uint256	Amount to allow

Returns

Name	Type	Description
_0	bool	True if success

balanceOf

function balanceOf(address _owner) external view returns (uint256)

Retrieves the token balance of the specified user

Parameters

Name	Type	Description
_owner	address	Owner to check the balance

Returns

Name	Type	Description
_0	uint256	The balance of the owner

burn

function burn(address _recipient, uint256 _shares) external nonpayable

Burn tokens and retrieve underlying LsETH tokens

The message sender burns shares from its balance for the LsETH equivalent valueThe message sender doesn't need to approve the contract to burn the sharesThe freed LsETH is sent to the specified recipient

Parameters

Name	Type	Description
_recipient	address	The account receiving the underlying LsETH tokens after shares are burned
_shares	uint256	Amount of LsETH to free by burning wrapped LsETH

decimals

function decimals() external pure returns (uint8)

Retrieves the token decimal count

Returns

Name	Type	Description
_0	uint8	The decimal count

decreaseAllowance

function decreaseAllowance(address _spender, uint256 _subtractableValue) external nonpayable returns (bool)

Decrease allowance to another account

Parameters

Name	Type	Description
_spender	address	Spender that receives the allowance
_subtractableValue	uint256	Amount to subtract

Returns

Name	Type	Description
_0	bool	True if success

increaseAllowance

function increaseAllowance(address _spender, uint256 _additionalValue) external nonpayable returns (bool)

Increase allowance to another account

Parameters

Name	Type	Description
_spender	address	Spender that receives the allowance
_additionalValue	uint256	Amount to add

Returns

Name	Type	Description
_0	bool	True if success

initWLSETHV1

function initWLSETHV1(address _river) external nonpayable

Initializes the wrapped token contract

Parameters

Name	Type	Description
_river	address	Address of the River contract

mint

function mint(address _recipient, uint256 _shares) external nonpayable

Mint tokens by providing LsETH tokens

The message sender locks LsETH tokens and received wrapped LsETH tokens in exchangeThe message sender needs to approve the contract to mint the wrapped tokensThe minted wrapped LsETH is sent to the specified recipient

Parameters

Name	Type	Description
_recipient	address	The account receiving the new minted wrapped LsETH
_shares	uint256	The amount of LsETH to wrap

name

function name() external pure returns (string)

Retrieves the token full name

Returns

Name	Type	Description
_0	string	The name of the token

sharesOf

function sharesOf(address _owner) external view returns (uint256)

Retrieves the raw shares count of the user

Parameters

Name	Type	Description
_owner	address	Owner to check the shares balance

Returns

Name	Type	Description
_0	uint256	The shares of the owner

symbol

function symbol() external pure returns (string)

Retrieves the token symbol

Returns

Name	Type	Description
_0	string	The symbol of the token

totalSupply

function totalSupply() external view returns (uint256)

Retrieves the token total supply

Returns

Name	Type	Description
_0	uint256	The total supply

transfer

function transfer(address _to, uint256 _value) external nonpayable returns (bool)

Transfers tokens between the message sender and a recipient

Parameters

Name	Type	Description
_to	address	Recipient of the transfer
_value	uint256	Amount to transfer

Returns

Name	Type	Description
_0	bool	True if success

transferFrom

function transferFrom(address _from, address _to, uint256 _value) external nonpayable returns (bool)

Transfers tokens between two accounts

It is expected that _from has given at least _value allowance to msg.sender

Parameters

Name	Type	Description
_from	address	Sender account
_to	address	Recipient of the transfer
_value	uint256	Amount to transfer

Returns

Name	Type	Description
_0	bool	True if success

Events

Approval

event Approval(address indexed owner, address indexed spender, uint256 value)

An approval has been made

Parameters

Name	Type	Description
owner indexed	address	The token owner
spender indexed	address	The account allowed by the owner
value	uint256	The amount allowed

Burn

event Burn(address indexed recipient, uint256 shares)

Tokens have been burned

Parameters

Name	Type	Description
recipient indexed	address	The account that receive the underlying LsETH
shares	uint256	The amount of LsETH that got sent back

Mint

event Mint(address indexed recipient, uint256 shares)

Tokens have been minted

Parameters

Name	Type	Description
recipient indexed	address	The account receiving the new tokens
shares	uint256	The amount of LsETH provided

SetRiver

event SetRiver(address indexed river)

The stored value of river has been changed

Parameters

Name	Type	Description
river indexed	address	The new address of river

Transfer

event Transfer(address indexed from, address indexed to, uint256 value)

A transfer has been made

Parameters

Name	Type	Description
from indexed	address	The transfer sender
to indexed	address	The transfer recipient
value	uint256	The amount transfered

Errors

AllowanceTooLow

error AllowanceTooLow(address _from, address _operator, uint256 _allowance, uint256 _value)

Allowance too low to perform operation

Parameters

Name	Type	Description
_from	address	Account where funds are sent from
_operator	address	Account attempting the transfer
_allowance	uint256	Current allowance
_value	uint256	Requested transfer value

BalanceTooLow

error BalanceTooLow()

Balance too low to perform operation

NullTransfer

error NullTransfer()

Invalid empty transfer

TokenTransferError

error TokenTransferError()

The token transfer failed during the minting or burning process

UnauthorizedTransfer

error UnauthorizedTransfer(address _from, address _to)

Invalid transfer recipients

Parameters

Name	Type	Description
_from	address	Account sending the funds in the invalid transfer
_to	address	Account receiving the funds in the invalid transfer