Smart Contracts

XY Finance deploys smart contracts of Swapper (X Swap) on most mainstream chains and benefits all types of users in terms of secure cross-chain swaps.

Swapper
Code
To enable ease of access to the content of the smart contracts (its code, data, status, etc.) and ascertain how they work and how they are programmed on the network, here we give you (users and institutions alike) the APIs and custom-fit UIs to suit your needs and provide you with a sense of security.

The link Swapper.sol below offers a collection of our code and functions. The smart contract accounts, deployed to the network, will interact with you when you submit transactions that execute functions that are defined on the smart contracts per se. Just like a regular, typical contract, our smart contracts define rules and will automatically implement them via the code. 
​Swapper.sol​
Address
The notion of smart contracts can be thought of as a program that resides at a particular address on the Ethereum blockchain.Swapper (X Swap) is then deployed at the following address: 

0x935BbF5c69225E3EDa7C3aA542A7Baa5c5c30094 
Currently, this address is on the Ethereum blockchain, the Binance Smart Chain (BSC) mainnet, as well as the Polygon Network. It was built from commit a71a896.
Events
SourceChainSwap
event SourceChainSwap(uint256 indexed _swapId, address _sender, uint8 _chainId, SwapInfo _swapInfo, uint256 _fromTokenAmount);
This will be submitted/sent out whenever a source-chain swap is completed.
TargetChainSwap
event TargetChainSwap(uint256 indexed _swapId, address _receiver, uint8 _chainId, SwapInfo _swapInfo);
This will be submitted/sent out by the time all source chain swaps are completed so as to keep a record of the target chain swap path for processors to do swaps on the target chain.
SwapForCompleted
event SwapForCompleted(uint256 indexed _swapId, address _receiver, address _toToken, uint256 _toTokenAmount);
This will be submitted/sent out Emitted whenever a target-chain swap is completed.
OneInchSwapFailed
event OneInchSwapFailed(address _token);
This will be submitted/sent out whenever a 1inch-DeFi/DEX-aggregator swap ends up unsuccessful.
State-Changing Functions
setOneInchAggregator
function setOneInchAggregator(address payable _oneInchAggregator)
Have a 1inch-aggregator contract address configured.
setProxyAccount
function setProxyAccount(address _addr, bool _flag)
Set our whitelist proxy address (simple address).
The cross-chain cash process is as follows.

user -> swapper -> proxy address -> bridge deposit address -> target chain swapper -> target chain user address
setOperatorAccount
function setOperatorAccount(address _addr, bool _flag)
Set operator address who has right to call swapForByOperator function.
setAnyswapRouter
function setAnyswapRouter(address _addr)
Set anyswap V3 router address, a contract to interact with to do cross chain bridge on anyswap V3.
setAnyTokenMapping
function setAnyTokenMapping(address token, address anyToken)
Set anyswap V3 router contract and correspond token contract mapping.
For example: the USDC router -> anyUSDC token address.
swap
function swap(
        uint256 fromTokenAmount,
        SwapInfo[] calldata swapInfos,
        SwapInfo[] calldata targetChainSwapInfo,
        address receiver
    )
Execute source chain side swap. The swapInfos are generated by server containing source chain part of best routing path. 
The targetChainSwapInfo only emit events to record target chain swap path.
This function should be called by user.
swapForByProxy
function swapForByProxy(
        uint256 _swapId,
        uint256 fromTokenAmount,
        SwapInfo[] calldata swapInfos,
        address receiver
    )
Execute target chain side swap. The swapInfos are generated by server containing target chain part of best routing path. After swap finished, last swap info will send target chain tokens to receiver (user address). 
Can be called only by whitelisted proxies.
swapForByOperator
function swapForByOperator(
        uint256 _swapId,
        uint256 fromTokenAmount,
        SwapInfo[] calldata swapInfos,
        address receiver
    )
The same mechanism as swapForByProxy, except that this is for anyswap V3 bridge.
Withdrawable
Code
​Withdrawable.sol​
Allow owner to withdraw all assets in the contract.
Events
LogWithdraw
event LogWithdraw(
        address indexed _assetAddress,
        address _from,
        uint amount
    );
Emitted each time withdraw finished.
State-Changing Functions
withdraw
function withdraw(address _assetAddress, uint amount)
Allow owner to withdraw asset in the contract.

Rebalance

Next - DEVELOPER

X Swap API

Last modified 1mo ago

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Outline

Swapper

Code

Address

Events

SourceChainSwap

TargetChainSwap

SwapForCompleted

OneInchSwapFailed

State-Changing Functions

setOneInchAggregator

setProxyAccount

setOperatorAccount

setAnyswapRouter

setAnyTokenMapping

swap

swapForByProxy

swapForByOperator

Withdrawable

Code

Events

LogWithdraw

State-Changing Functions

withdraw