EverWeverToTip3

The EverWeverToTip3 defines the logic for swapping EVERs in combination with WEVERs to Tip3 tokens.

Smart contract responsible for swapping EVERs in combination with WEVERs to Tip3 tokens.

Derives following classes and interfaces: IAcceptTokensTransferCallback, IAcceptTokensBurnCallback.

constructor

constructor() public

Deploy EverToTip3Gas empty wallet.

buildExchangePayload

function buildExchangePayload(uint64 id, uint128 amount, address pair, uint128 expectedAmount, uint128 deployWalletValue) external pure returns (TvmCell)

Builds payload by filling the TVM builder instance with data derived from function params, returns builder converted to cell.

Parameters:

Name	Type	Description
id	uint64	Operation id
amount	uint128	Amount of tokens to exchange
pair	address	Address of the exchange pair
expectedAmount	uint128	Expected amount of tokens after exchange
deployWalletValue	uint128	Deploy value

Return Value:

Type	Description
TvmCell	Exchange payload in cell format

Callbacks

onWeverWallet

function onWeverWallet(address _weverWallet) external

Deploys Wever wallet for the contract using _weverWallet address from the function params.

Parameters:

Name	Type	Description
_weverWallet	address	Address used to initialize wever wallet

onAcceptTokensTransfer

function onAcceptTokensTransfer(address /*tokenRoot*/, uint128 amount, address /*sender*/, address /*senderWallet*/, address user, TvmCell payload) override external

Callback if swap between ever and tip 3 is successful. Calls onSwapEverToTip3Success callback to the user, SwapEverToTip3SuccessTransfer event is emitted and tip 3 tokens are sent to a user wallet by calling TokenWallet’s transfer method. If conditions are not fulfilled swap is canceled and tokens are returned to sender’s wallet.

Parameters:

Name	Type	Description
tokenRoot	address	Address of token root (optional)
amount	uint128	Amount of tokens to transfer
sender	address	Address of tokens sender (optional)
senderWallet	address	Tokens sender’s wallet address (optional)
user	address	User’s address for receiving tip3 tokens
payload	TvmCell	Transfer payload data

onAcceptTokensBurn

function onAcceptTokensBurn( uint128 /*amount*/, address /*walletOwner*/, address /*wallet*/, address user, TvmCell payload) override external

If result of swap was canceled call this callback, it emits SwapEverToTip3CancelTransfer event and calls onSwapEversToTip3Cancel callback.

Parameters:

Name	Type	Description
amount	uint128	Amount of tokens to burn (optional)
walletOwner	address	Address of wallet owner (optional)
wallet	address	Wallet address (optional)
user	address	User’s address that canceled exchange
payload	TvmCell	Burn tokens payload data

Key Events

SwapEverWeverToTip3Unwrap

SwapEverWeverToTip3Unwrap(address user, uint64 id);