Включает в себя:
var contractV3SwapRouterV2Address =
функция toAmount ((s, десятичные знаки) { возвращение числа (BigDecimal (BigInt)) / BigDecimal (Math.pow) 10, десятичных знаков))).toString (String)) Я не знаю.
функция toInnerAmount ((n, десятичные знаки) { return (BigDecimal(n) * BigDecimal(Math.pow(10, десятичные цифры))).toFixed(0) Я не знаю.
функция main() { // ABI для регистрации Uniswap заводских контрактовexchange.IO("abi", контрактV3FactoryАдрес, abiFactory)
// Register ABI for Uniswap router contracts
exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)
// Get the pool address of the trading pair
var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)
// Registration pool contract ABI
exchange.IO("abi", poolAddress, abiPool)
// Get the current configured wallet address
var walletAddress = exchange.IO("address")
// 1INCH -> WETH, tokenIn: 1INCH
var allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
Log("allowanceAmount:", allowanceAmount, ", use the toAmount() function to convert to readable values:", toAmount(allowanceAmount, tokenIn.decimals))
var balance = exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "balanceOf", walletAddress)
var balanceOf1INCH = toAmount(balance, tokenIn.decimals)
Log("balanceOf1INCH:", balanceOf1INCH)
var swapAmount = 38
if (balanceOf1INCH < swapAmount) {
Log("In the wallet", tokenIn.name, "insufficient, the number is only:", balanceOf1INCH)
}
if (toAmount(allowanceAmount, tokenIn.decimals) < swapAmount) {
Log("Insufficient authorization quantity, proceed with authorization")
// You can also specify an unlimited number of authorizations, i.e. replace the code toInnerAmount(swapAmount, tokenIn.decimals) with '0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'
var txApprove = exchange.IO("api", tokenIn.address, "approve", contractV3SwapRouterV2Address, toInnerAmount(swapAmount, tokenIn.decimals))
if (!txApprove) {
Log("Authorization failed")
} else {
for (var i = 0; i < 10; i++) {
Sleep(5000)
var info = exchange.IO("api", "eth", "eth_getTransactionReceipt", txApprove)
if (info && info.gasUsed) {
Log("info:", info)
break
}
Log('Transaction not yet mined', txApprove)
}
// Check the number of authorizations again
allowanceAmount = exchange.IO("api", tokenIn.address, "allowance", walletAddress, contractV3SwapRouterV2Address)
Log("Check the number of authorizations again,", "allowanceAmount:", allowanceAmount, ", use the toAmount() function to convert to readable values:", toAmount(allowanceAmount, tokenIn.decimals))
}
}
// Exchange
var recipientAddress = "0x0000000000000000000000000000000000000002"
var fee = exchange.IO("encodePacked", "uint24", 10000)
var path = tokenIn.address.slice(2).toLowerCase() + fee + tokenOut.address.slice(2).toLowerCase()
var minOut = 1
var amountIn = toInnerAmount(swapAmount, tokenIn.decimals)
var swapToken = exchange.IO("encode", contractV3SwapRouterV2Address, "exactInput", {
path: path,
recipient: recipientAddress,
amountIn: amountIn,
amountOutMinimum: minOut
})
var data = [swapToken]
data.push(exchange.IO("encode", contractV3SwapRouterV2Address, "unwrapWETH9(uint256,address)", 1, walletAddress))
var tx = exchange.IO("api", contractV3SwapRouterV2Address, "multicall(uint256,bytes[])", 0, (new Date().getTime() / 1000) + 3600, data)
Log("tx:", tx)
}
#### Get the Exchange Price in the Pool
As we explained before, when we use the token address (there are two: tokenIn and tokenOut) and the rate setting, we can get the exchange pool (smart contract) address of this exchange portfolio from the ```getPool``` method of the ```Factory``` contract of ```Uniswap```.
Once the pool address is obtained, the ABI of the pool contract is registered and the ```slot0``` method of the pool contract can be called to get the data related to the current exchange price and further resolve the exchange price.
```javascript
var abiRoute = '[{"inputs":[{"internalType":"address","name":"_factoryV2","type":"address"},{"internalType":"address","name":"factoryV3","type":"address"},{"internalType":"address","name":"_positionManager","type":"address"},{"internalType":"address","name":"_WETH9","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"WETH9","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMax","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"approveZeroThenMaxMinusOne","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"callPositionManager","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"paths","type":"bytes[]"},{"internalType":"uint128[]","name":"amounts","type":"uint128[]"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"uint24","name":"maximumTickDivergence","type":"uint24"},{"internalType":"uint32","name":"secondsAgo","type":"uint32"}],"name":"checkOracleSlippage","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactInputParams","name":"params","type":"tuple"}],"name":"exactInput","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactInputSingleParams","name":"params","type":"tuple"}],"name":"exactInputSingle","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"}],"internalType":"struct IV3SwapRouter.ExactOutputParams","name":"params","type":"tuple"}],"name":"exactOutput","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","type":"uint256"},{"internalType":"uint160","name":"sqrtPriceLimitX96","type":"uint160"}],"internalType":"struct IV3SwapRouter.ExactOutputSingleParams","name":"params","type":"tuple"}],"name":"exactOutputSingle","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factoryV2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"getApprovalType","outputs":[{"internalType":"enum IApproveAndCall.ApprovalType","name":"","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"}],"internalType":"struct IApproveAndCall.IncreaseLiquidityParams","name":"params","type":"tuple"}],"name":"increaseLiquidity","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"},{"internalType":"uint24","name":"fee","type":"uint24"},{"internalType":"int24","name":"tickLower","type":"int24"},{"internalType":"int24","name":"tickUpper","type":"int24"},{"internalType":"uint256","name":"amount0Min","type":"uint256"},{"internalType":"uint256","name":"amount1Min","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"internalType":"struct IApproveAndCall.MintParams","name":"params","type":"tuple"}],"name":"mint","outputs":[{"internalType":"bytes","name":"result","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"previousBlockhash","type":"bytes32"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"positionManager","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"pull","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"refundETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowed","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"expiry","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitAllowedIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"selfPermitIfNecessary","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"sweepToken","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"sweepTokenWithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"int256","name":"amount0Delta","type":"int256"},{"internalType":"int256","name":"amount1Delta","type":"int256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"uniswapV3SwapCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"}],"name":"unwrapWETH9","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountMinimum","type":"uint256"},{"internalType":"uint256","name":"feeBips","type":"uint256"},{"internalType":"address","name":"feeRecipient","type":"address"}],"name":"unwrapWETH9WithFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"wrapETH","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]';
var abiPool = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Burn\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"Collect\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"name\":\"CollectProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"paid1\",\"type\":\"uint256\"}],\"name\":\"Flash\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextOld\",\"type\":\"uint16\"},{\"indexed\":false,\"internalType\":\"uint16\",\"name\":\"observationCardinalityNextNew\",\"type\":\"uint16\"}],\"name\":\"IncreaseObservationCardinalityNext\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Initialize\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"name\":\"Mint\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1Old\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol0New\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"feeProtocol1New\",\"type\":\"uint8\"}],\"name\":\"SetFeeProtocol\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"},{\"indexed\":false,\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"indexed\":false,\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"}],\"name\":\"Swap\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"}],\"name\":\"burn\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collect\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint128\",\"name\":\"amount0Requested\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1Requested\",\"type\":\"uint128\"}],\"name\":\"collectProtocol\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"amount0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"amount1\",\"type\":\"uint128\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"factory\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal0X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"feeGrowthGlobal1X128\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"flash\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"}],\"name\":\"increaseObservationCardinalityNext\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"}],\"name\":\"initialize\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"liquidity\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"maxLiquidityPerTick\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"},{\"internalType\":\"uint128\",\"name\":\"amount\",\"type\":\"uint128\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"mint\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"amount0\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"amount1\",\"type\":\"uint256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"name\":\"observations\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"blockTimestamp\",\"type\":\"uint32\"},{\"internalType\":\"int56\",\"name\":\"tickCumulative\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityCumulativeX128\",\"type\":\"uint160\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint32[]\",\"name\":\"secondsAgos\",\"type\":\"uint32[]\"}],\"name\":\"observe\",\"outputs\":[{\"internalType\":\"int56[]\",\"name\":\"tickCumulatives\",\"type\":\"int56[]\"},{\"internalType\":\"uint160[]\",\"name\":\"secondsPerLiquidityCumulativeX128s\",\"type\":\"uint160[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"positions\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidity\",\"type\":\"uint128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside0LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthInside1LastX128\",\"type\":\"uint256\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"tokensOwed1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"protocolFees\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"token0\",\"type\":\"uint128\"},{\"internalType\":\"uint128\",\"name\":\"token1\",\"type\":\"uint128\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"feeProtocol0\",\"type\":\"uint8\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol1\",\"type\":\"uint8\"}],\"name\":\"setFeeProtocol\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"slot0\",\"outputs\":[{\"internalType\":\"uint160\",\"name\":\"sqrtPriceX96\",\"type\":\"uint160\"},{\"internalType\":\"int24\",\"name\":\"tick\",\"type\":\"int24\"},{\"internalType\":\"uint16\",\"name\":\"observationIndex\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinality\",\"type\":\"uint16\"},{\"internalType\":\"uint16\",\"name\":\"observationCardinalityNext\",\"type\":\"uint16\"},{\"internalType\":\"uint8\",\"name\":\"feeProtocol\",\"type\":\"uint8\"},{\"internalType\":\"bool\",\"name\":\"unlocked\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"tickLower\",\"type\":\"int24\"},{\"internalType\":\"int24\",\"name\":\"tickUpper\",\"type\":\"int24\"}],\"name\":\"snapshotCumulativesInside\",\"outputs\":[{\"internalType\":\"int56\",\"name\":\"tickCumulativeInside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityInsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsInside\",\"type\":\"uint32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"zeroForOne\",\"type\":\"bool\"},{\"internalType\":\"int256\",\"name\":\"amountSpecified\",\"type\":\"int256\"},{\"internalType\":\"uint160\",\"name\":\"sqrtPriceLimitX96\",\"type\":\"uint160\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"swap\",\"outputs\":[{\"internalType\":\"int256\",\"name\":\"amount0\",\"type\":\"int256\"},{\"internalType\":\"int256\",\"name\":\"amount1\",\"type\":\"int256\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int16\",\"name\":\"\",\"type\":\"int16\"}],\"name\":\"tickBitmap\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"name\":\"ticks\",\"outputs\":[{\"internalType\":\"uint128\",\"name\":\"liquidityGross\",\"type\":\"uint128\"},{\"internalType\":\"int128\",\"name\":\"liquidityNet\",\"type\":\"int128\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside0X128\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"feeGrowthOutside1X128\",\"type\":\"uint256\"},{\"internalType\":\"int56\",\"name\":\"tickCumulativeOutside\",\"type\":\"int56\"},{\"internalType\":\"uint160\",\"name\":\"secondsPerLiquidityOutsideX128\",\"type\":\"uint160\"},{\"internalType\":\"uint32\",\"name\":\"secondsOutside\",\"type\":\"uint32\"},{\"internalType\":\"bool\",\"name\":\"initialized\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token0\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token1\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]'
var abiFactory = '[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":true,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"FeeAmountEnabled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"oldOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnerChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"indexed\":false,\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"name\":\"PoolCreated\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"tokenA\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"tokenB\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"}],\"name\":\"createPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"pool\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"name\":\"enableFeeAmount\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"feeAmountTickSpacing\",\"outputs\":[{\"internalType\":\"int24\",\"name\":\"\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"\",\"type\":\"uint24\"}],\"name\":\"getPool\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"parameters\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"factory\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token0\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"token1\",\"type\":\"address\"},{\"internalType\":\"uint24\",\"name\":\"fee\",\"type\":\"uint24\"},{\"internalType\":\"int24\",\"name\":\"tickSpacing\",\"type\":\"int24\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]'
var contractV3FactoryAddress = "0x1F98431c8aD98523631AE4a59f267346ea31F984"
var contractV3SwapRouterV2Address = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"
function toAmount(s, decimals) {
return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}
function toInnerAmount(n, decimals) {
return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}
function main() {
// ABI for registration of Uniswap factory contracts
exchange.IO("abi", contractV3FactoryAddress, abiFactory)
// Register ABI for Uniswap router contracts
exchange.IO("abi", contractV3SwapRouterV2Address, abiRoute)
// Get the pool address of the trading pair
var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
var poolAddress = exchange.IO("api", contractV3FactoryAddress, "getPool", tokenIn.address, tokenOut.address, 10000)
// Registration pool contract ABI
exchange.IO("abi", poolAddress, abiPool)
var slot0 = exchange.IO("api", poolAddress, "slot0")
Log("slot0:", slot0)
}
Получите информацию о ценах обменного пула и распечатайтеslot0переменная в коде:
{
"feeProtocol":0,
"unlocked":true,
"sqrtPriceX96":"1128983883551457130720648561",
"tick":"-85025",
"observationIndex":5,
"observationCardinality":6,
"observationCardinalityNext":6
}
Если основные данные о ценах записываются вsqrtPriceX96Поле, необходимо рассчитать текущую цену биржевого пула вместе согласно токен точности данных биржевого портфеля, согласно описанию вUniswapВ этом документе мы реализуем функцию для вычисления:
function computePoolPrice(decimals0, decimals1, sqrtPriceX96) {
// sqrtPriceX96 = sqrt(price) * 2^96
[decimals0, decimals1, sqrtPriceX96] = [decimals0, decimals1, sqrtPriceX96].map(BigInt);
const TWO = BigInt(2);
const TEN = BigInt(10);
const SIX_TENTH = BigInt(1000000);
const Q192 = (TWO ** BigInt(96)) ** TWO;
return (
Number((sqrtPriceX96 ** TWO * TEN ** decimals0 * SIX_TENTH) / (Q192 * TEN ** decimals1)) /
Number(SIX_TENTH)
);
}
Используйте эту функцию для расчета текущей цены биржевого пула с комбинацией токенов1INCH/WETHи ставку в 10 000.
function computePoolPrice(decimals0, decimals1, sqrtPriceX96) {
// sqrtPriceX96 = sqrt(price) * 2^96
[decimals0, decimals1, sqrtPriceX96] = [decimals0, decimals1, sqrtPriceX96].map(BigInt);
const TWO = BigInt(2);
const TEN = BigInt(10);
const SIX_TENTH = BigInt(1000000);
const Q192 = (TWO ** BigInt(96)) ** TWO;
return (
Number((sqrtPriceX96 ** TWO * TEN ** decimals0 * SIX_TENTH) / (Q192 * TEN ** decimals1)) /
Number(SIX_TENTH)
);
}
function main() {
var tokenIn = {name : "1INCH", address: "0x111111111117dC0aa78b770fA6A738034120C302", decimals: exchange.IO("api", "0x111111111117dC0aa78b770fA6A738034120C302", "decimals")}
var tokenOut = {name : "WETH", address: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", decimals: exchange.IO("api", "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", "decimals")}
// In the obtained slot0 variable "sqrtPriceX96":"1128983883551457130720648561",
var price = computePoolPrice(tokenIn.decimals, tokenOut.decimals, "1128983883551457130720648561")
Log("price:", price)
}
Напечатать переменнуюpriceчтобы показать:price: 0.000203(1 1 дюйм для 0,000203 WETH).
Платформа FMZ Quant Trading раскрыла пакетUniswap шаблон, который был реализован для обмена, получения цен, запроса баланса кошелька и других функций, без необходимости писать код неоднократно на основе вышеприведенного объяснения, вы можете прочитать исходный код этого шаблона для более глубокого обучения, разработки приложений Web3 направления.
Библиотека шаблонов классов содержит много деталей, предназначенных для обучения:
Получить информацию о токенах автоматически
Выдержка из одного из кодов объясняет, когда параметрAutoFetchTokensЕсли значение этого шаблона установлено на true, программа шаблона автоматически посетитhttps://tokens.coingecko.com/uniswap/all.jsonЭто устраняет необходимость вручную добавлять токен в код стратегии (в противном случае вам нужно использоватьaddToken(name, address)чтобы добавить токен).
if (AutoFetchTokens) {
let res = JSON.parse(HttpQuery("https://tokens.coingecko.com/uniswap/all.json"))
Log("fetch", res.tokens.length, "tokens from", res.name)
res.tokens.forEach(function(token) {
if (token.chainId == chainId && token.symbol != "WETH") {
self.tokenInfo[token.symbol] = {
name: token.symbol,
decimals: token.decimals,
address: token.address
}
}
})
}
Приспособление различных адресов контрактов в соответствии с настройками цепочки
Набор шаблоновChainTypeпараметр для поддержки переключения нескольких цепей:
'https://rpc.ankr.com/eth',
'https://arb1.arbitrum.io/rpc',
'https://mainnet.optimism.io/',
'https://rpc.ankr.com/avalanche',
'https://polygon-rpc.com',
'https://rpc.ankr.com/celo',
Код выдержки:
if (typeof(ChainType) === 'number') {
let chainRpc = [
'',
'https://rpc.ankr.com/eth',
'https://arb1.arbitrum.io/rpc',
'https://mainnet.optimism.io/',
'https://rpc.ankr.com/avalanche',
'https://polygon-rpc.com',
'https://rpc.ankr.com/celo',
//'https://mainnet.aurora.dev',
//'https://bsc-dataseed.binance.org',
//'https://exchainrpc.okex.org'
][ChainType]
if (chainRpc && chainRpc.length > 0) {
e.IO("base", chainRpc)
Log("change base rpc to", chainRpc)
}
}
Вызвать метод RPC Ethereumeth_chainIdчтобы запросить текущийchainId, а затем адаптировать адрес WETH,Uniswapряд контрактных адресов,USDTКонтрактные адреса и т.д.chainId(определенный смарт-контракт может иметь разные адреса контрактов на разных цепочках).
Код выдержки:
// https://docs.uniswap.org/contracts/v3/reference/deployments
let WETHAddress = {
1: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", // Ethereum
3: "0xc778417E063141139Fce010982780140Aa0cD5Ab", // Ropsten
4: "0xc778417E063141139Fce010982780140Aa0cD5Ab", // Rinkeby
5: "0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6", // Goerli
42: "0xd0A1E359811322d97991E03f863a0C30C2cF029C", // Kovan
10: "0x4200000000000000000000000000000000000006", // Optimism
69: "0x4200000000000000000000000000000000000006", // Optimistic Kovan
42161: "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1", // Arbitrum One
421611: "0xB47e6A5f8b33b3F17603C83a0535A9dcD7E32681", // Arbitrum Rinkeby
137: "0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270", // Polygon
80001: "0x9c3C9283D3e44854697Cd22D3Faa240Cfb032889", // Polygon Mumbai
}
let chainId = e.IO("api", "ETH", "eth_chainId")
if (chainId) {
chainId = Number(chainId)
Log("chainId: ", chainId)
let addr = WETHAddress[chainId]
if (addr) {
Log("Register WETH address", addr)
self.addToken("ETH", addr)
}
if (chainId == 42220) {
// Celo Address
ContractV3Factory = '0xAfE208a311B21f13EF87E33A90049fC17A7acDEc'
ContractV3SwapRouterV2 = '0x5615CDAb10dc425a742d643d949a7F474C01abc4'
self.addToken('CELO', '0x471ece3750da237f93b8e339c536989b8978a438')
} else if (chainId == 42161) {
self.addToken('USDT', '0xfd086bc7cd5c481dcc9c85ebe478a1c0b69fcbb9')
}
} else {
panic("get chain Id error")
}
Используйте
В$.testUniswap()Функция в этом шаблоне - это функция, которая проверяет функциональность шаблона, и ее код дает пример использования вызова шаблона:
$.testUniswap = function() {
let ex = $.NewUniswapV3()
Log("walletAddress: ", ex.walletAddress)
let tokenAddressMap = {
"USDT": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"1INCH": "0x111111111117dC0aa78b770fA6A738034120C302",
"USDC": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
}
for (let name in tokenAddressMap) {
ex.addToken(name, tokenAddressMap[name])
}
Log(ex.getPrice('ETH_USDT'))
Log(ex.getPrice('1INCH_USDT'))
// swap 0.01 ETH to USDT
Log(ex.swapToken('ETH', 0.01, 'USDT'))
let usdtBalance = ex.balanceOf('USDT')
Log("balance of USDT", usdtBalance)
// swap USDT to DAI then DAI to ETH
Log(ex.swapToken('USDT', usdtBalance, 'DAI,ETH'))
Log("balance of ETH", ex.getETHBalance())
// Log(ex.sendETH('0x11111', 0.02))
// ...
}
Когда стратегия ссылается на
Создать переменную под названиемexи вызвать функцию интерфейса$.NewUniswapV3()который упакован в шаблон ex.
let ex = $.NewUniswapV3()
Использовать функцию " член "addToken()В соответствии сexобъект для добавления (регистрации) информации о токенах.
let tokenAddressMap = {
"USDT": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"1INCH": "0x111111111117dC0aa78b770fA6A738034120C302",
"USDC": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"DAI": "0x6b175474e89094c44da98b954eedeac495271d0f",
}
for (let name in tokenAddressMap) {
ex.addToken(name, tokenAddressMap[name])
}
Чтобы получить и распечатать обменный пул цены для конкретной торговой пары, вы можете использовать функцию членаgetPrice()В соответствии сexобъект, который может быть записан следующим образом:
Log(ex.getPrice('ETH_USDT'))
Log(ex.getPrice('1INCH_USDT'))
Для выполнения операции обмена вы можете использовать функцию членаswapToken()В соответствии сexОбъект обмена:
// swap 0.01 ETH to USDT
Log(ex.swapToken('ETH', 0.01, 'USDT'))
let usdtBalance = ex.balanceOf('USDT')
Log("balance of USDT", usdtBalance)
// swap USDT to DAI then DAI to ETH
Log(ex.swapToken('USDT', usdtBalance, 'DAI,ETH'))
В этом разделе мы научимся читать события, выпущенные смарт-контрактами с использованием FMZ Quant Trading Platform.
Чтобы запросить событие выпуска смарт-контракта, вам нужно использовать метод RPC Ethereumeth_getLogsчтобы получить данные журнала на цепочке, как вызвать узлы Ethereum RPC, мы объяснили в нашем предыдущем курсе.
Например, мы получаем событиеWETHконтракт может писать код и тестировать его с помощью FMZeth_getLogsМетод, мы указываем три параметраfromBlock, toBlock, address, и мы используем параметры fromBlock и toBlock для ограничения запроса данными в блоке:
function toAmount(s, decimals) {
return Number((BigDecimal(BigInt(s)) / BigDecimal(Math.pow(10, decimals))).toString())
}
function toInnerAmount(n, decimals) {
return (BigDecimal(n) * BigDecimal(Math.pow(10, decimals))).toFixed(0)
}
function main() {
// getBlockNumber
var blockNumber = exchange.IO("api", "eth", "eth_blockNumber")
Log("blockNumber:", blockNumber)
// get logs
var fromBlock = "0x" + (toAmount(blockNumber, 0) - 1).toString(16)
var toBlock = "0x" + toAmount(blockNumber, 0).toString(16)
var params = {
"fromBlock" : fromBlock,
"toBlock" : toBlock,
"address" : "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2" // Address of WETH contract
}
var logs = exchange.IO("api", "eth", "eth_getLogs", params)
// Due to the large amount of data, if you use the Log function to print, the data will be truncated. Use return to return the complete data in the "Function Result" edit box on the page
return logs
}
Были получены данные о журналах, и мы пропустили некоторые из них из-за их большого содержания:
[{
"data": "0x00000000000000000000000000000000000000000000000001c1a55000000000",
"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000006b75d8af000000e20b7a7ddf000ba900b4009a80", "0x000000000000000000000000bcb095c1f9c3dc02e834976706c87dee5d0f1fb6"],
"transactionHash": "0x27f9bf5abe3148169b4b85a83e1de32bd50eb81ecc52e5af006157d93353e4c4",
"transactionIndex": "0x0",
"removed": false,
"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"blockHash": "0x847be24a7b159c292bda030a011dfec89487b70e71eed486969b032d6ef04bad",
"blockNumber": "0x109b1cc",
"logIndex": "0x0"
}, {
"data": "0x00000000000000000000000000000000000000000000000008ea20cdea027c00",
"logIndex": "0x5",
"topics": ["0xe1fffcc4923d04b559f4d29a8bfc6cda04eb5b0d3c460751c2402c5c5cc9109c", "0x0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d"],
"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"blockHash": "0x847be24a7b159c292bda030a011dfec89487b70e71eed486969b032d6ef04bad",
"blockNumber": "0x109b1cc",
"removed": false,
"transactionHash": "0xace3afa02e8af5d1ef6fc1635fbdf7bee37624547937ea5272c23968dd034c09",
"transactionIndex": "0x1"
},
...
{
"blockNumber": "0x109b1cd",
"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"data": "0x00000000000000000000000000000000000000000000000002c053531ab8a000",
"logIndex": "0xd3",
"removed": false,
"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000001111111254eeb25477b68fb85ed929f73a960582", "0x000000000000000000000000252ba9b5916171dbdadd2cec7f91875a006955d0"],
"transactionHash": "0x3012b82891f85b077cfe1c12cb9722b93c696ef2c37d67981ccddcc9c3396aca",
"transactionIndex": "0x8d",
"blockHash": "0xcd3d567c9bd02a4549b1de0dc638ab5523e847c3c156b096424f56c633000fd9"
}, {
"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x00000000000000000000000012b791bb27b3a4ee958b5a435fea7d49ec076e9c", "0x000000000000000000000000ef1c6e67703c7bd7107eed8303fbe6ec2554bf6b"],
"transactionIndex": "0x91",
"logIndex": "0xdb",
"removed": false,
"blockNumber": "0x109b1cd",
"data": "0x000000000000000000000000000000000000000