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);
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Outline
constructor
buildExchangePayload
Callbacks
onWeverWallet
onAcceptTokensTransfer
onAcceptTokensBurn
Key Events
SwapEverWeverToTip3Unwrap