@sky-mavis/smart-order-router
Version:
Ronin Swap Smart Order Router
107 lines • 11.9 kB
JavaScript
import { SWAP_ROUTER_02_ADDRESSES, UNIVERSAL_ROUTER_ADDRESS } from '@sky-mavis/katana-core';
import { MixedRouteSDK, Protocol, SwapRouter as SwapRouter02, Trade } from '@uniswap/router-sdk';
import { TradeType } from '@uniswap/sdk-core';
import { SwapRouter as UniversalRouter } from '@uniswap/universal-router-sdk';
import { Route as V2RouteRaw } from '@uniswap/v2-sdk';
import { Route as V3RouteRaw } from '@uniswap/v3-sdk';
import _ from 'lodash';
import { CurrencyAmount, SwapType, } from '..';
export function buildTrade(tokenInCurrency, tokenOutCurrency, tradeType, routeAmounts) {
/// Removed partition because of new mixedRoutes
const v3RouteAmounts = _.filter(routeAmounts, routeAmount => routeAmount.protocol === Protocol.V3);
const v2RouteAmounts = _.filter(routeAmounts, routeAmount => routeAmount.protocol === Protocol.V2);
const mixedRouteAmounts = _.filter(routeAmounts, routeAmount => routeAmount.protocol === Protocol.MIXED);
const v3Routes = _.map(v3RouteAmounts, (routeAmount) => {
const { route, amount, quote } = routeAmount;
// The route, amount and quote are all in terms of wrapped tokens.
// When constructing the Trade object the inputAmount/outputAmount must
// use native currencies if specified by the user. This is so that the Trade knows to wrap/unwrap.
if (tradeType == TradeType.EXACT_INPUT) {
const amountCurrency = CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator);
const quoteCurrency = CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator);
const routeRaw = new V3RouteRaw(route.pools, amountCurrency.currency, quoteCurrency.currency);
return {
routev3: routeRaw,
inputAmount: amountCurrency,
outputAmount: quoteCurrency,
};
}
else {
const quoteCurrency = CurrencyAmount.fromFractionalAmount(tokenInCurrency, quote.numerator, quote.denominator);
const amountCurrency = CurrencyAmount.fromFractionalAmount(tokenOutCurrency, amount.numerator, amount.denominator);
const routeCurrency = new V3RouteRaw(route.pools, quoteCurrency.currency, amountCurrency.currency);
return {
routev3: routeCurrency,
inputAmount: quoteCurrency,
outputAmount: amountCurrency,
};
}
});
const v2Routes = _.map(v2RouteAmounts, (routeAmount) => {
const { route, amount, quote } = routeAmount;
// The route, amount and quote are all in terms of wrapped tokens.
// When constructing the Trade object the inputAmount/outputAmount must
// use native currencies if specified by the user. This is so that the Trade knows to wrap/unwrap.
if (tradeType == TradeType.EXACT_INPUT) {
const amountCurrency = CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator);
const quoteCurrency = CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator);
const routeV2SDK = new V2RouteRaw(route.pairs, amountCurrency.currency, quoteCurrency.currency);
return {
routev2: routeV2SDK,
inputAmount: amountCurrency,
outputAmount: quoteCurrency,
};
}
else {
const quoteCurrency = CurrencyAmount.fromFractionalAmount(tokenInCurrency, quote.numerator, quote.denominator);
const amountCurrency = CurrencyAmount.fromFractionalAmount(tokenOutCurrency, amount.numerator, amount.denominator);
const routeV2SDK = new V2RouteRaw(route.pairs, quoteCurrency.currency, amountCurrency.currency);
return {
routev2: routeV2SDK,
inputAmount: quoteCurrency,
outputAmount: amountCurrency,
};
}
});
const mixedRoutes = _.map(mixedRouteAmounts, (routeAmount) => {
const { route, amount, quote } = routeAmount;
if (tradeType != TradeType.EXACT_INPUT) {
throw new Error('Mixed routes are only supported for exact input trades');
}
// The route, amount and quote are all in terms of wrapped tokens.
// When constructing the Trade object the inputAmount/outputAmount must
// use native currencies if specified by the user. This is so that the Trade knows to wrap/unwrap.
const amountCurrency = CurrencyAmount.fromFractionalAmount(tokenInCurrency, amount.numerator, amount.denominator);
const quoteCurrency = CurrencyAmount.fromFractionalAmount(tokenOutCurrency, quote.numerator, quote.denominator);
const routeRaw = new MixedRouteSDK(route.pools, amountCurrency.currency, quoteCurrency.currency);
return {
mixedRoute: routeRaw,
inputAmount: amountCurrency,
outputAmount: quoteCurrency,
};
});
const trade = new Trade({ v2Routes, v3Routes, mixedRoutes, tradeType });
return trade;
}
export function buildSwapMethodParameters(trade, swapConfig, chainId) {
if (swapConfig.type == SwapType.UNIVERSAL_ROUTER) {
return {
...UniversalRouter.swapERC20CallParameters(trade, swapConfig),
to: UNIVERSAL_ROUTER_ADDRESS[chainId],
};
}
else if (swapConfig.type == SwapType.SWAP_ROUTER_02) {
const { recipient, slippageTolerance, deadline, inputTokenPermit } = swapConfig;
return {
...SwapRouter02.swapCallParameters(trade, {
recipient,
slippageTolerance,
deadlineOrPreviousBlockhash: deadline,
inputTokenPermit,
}),
to: SWAP_ROUTER_02_ADDRESSES(chainId),
};
}
throw new Error(`Unsupported swap type ${swapConfig}`);
}
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