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@@ -3,10 +3,13 @@ pragma solidity ^0.8.13;
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import {IERC20, ISwapAdapter} from "src/interfaces/ISwapAdapter.sol";
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import {ERC20} from "openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
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import {SafeERC20} from "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
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import {SafeERC20} from
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"openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
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/// @dev Integral submitted deadline of 3600 seconds (1 hour) to Paraswap, but it is not strictly necessary to be this long
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/// as the contract allows less durations, we use 1000 seconds (15 minutes) as a deadline
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/// @dev Integral submitted deadline of 3600 seconds (1 hour) to Paraswap, but
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/// it is not strictly necessary to be this long
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/// as the contract allows less durations, we use 1000 seconds (15 minutes) as a
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/// deadline
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uint256 constant SWAP_DEADLINE_SEC = 1000;
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uint256 constant STANDARD_TOKEN_DECIMALS = 10 ** 18;
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@@ -21,12 +24,18 @@ contract IntegralSwapAdapter is ISwapAdapter {
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}
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/// @inheritdoc ISwapAdapter
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/// @dev Integral always relies on a single pool linked to the factory to map two pairs, and does not use routing
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/// we can then use getPriceByTokenAddresses() instead of getPriceByPairAddresses()
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/// as they both return the same value and the first also handles the order of tokens inside.
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/// @dev Since the price of a token is determined externally by Integral Oracles and not by reserves
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/// it will always be the same (pre and post trade) and independent of the amounts swapped,
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/// but we still return an array of length=specifiedAmounts.length with same values to make sure the return value is the expected from caller.
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/// @dev Integral always relies on a single pool linked to the factory to
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/// map two pairs, and does not use routing
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/// we can then use getPriceByTokenAddresses() instead of
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/// getPriceByPairAddresses()
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/// as they both return the same value and the first also handles the order
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/// of tokens inside.
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/// @dev Since the price of a token is determined externally by Integral
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/// Oracles and not by reserves
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/// it will always be the same (pre and post trade) and independent of the
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/// amounts swapped,
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/// but we still return an array of length=specifiedAmounts.length with same
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/// values to make sure the return value is the expected from caller.
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function price(
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bytes32,
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IERC20 _sellToken,
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@@ -34,7 +43,8 @@ contract IntegralSwapAdapter is ISwapAdapter {
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uint256[] memory _specifiedAmounts
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) external view override returns (Fraction[] memory _prices) {
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_prices = new Fraction[](_specifiedAmounts.length);
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Fraction memory price = getPriceAt(address(_sellToken), address(_buyToken));
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Fraction memory price =
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getPriceAt(address(_sellToken), address(_buyToken));
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for (uint256 i = 0; i < _specifiedAmounts.length; i++) {
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_prices[i] = price;
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@@ -54,12 +64,12 @@ contract IntegralSwapAdapter is ISwapAdapter {
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}
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uint256 gasBefore = gasleft();
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if (side == OrderSide.Sell) { // sell
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trade.calculatedAmount =
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sell(sellToken, buyToken, specifiedAmount);
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} else { // buy
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trade.calculatedAmount =
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buy(sellToken, buyToken, specifiedAmount);
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if (side == OrderSide.Sell) {
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// sell
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trade.calculatedAmount = sell(sellToken, buyToken, specifiedAmount);
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} else {
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// buy
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trade.calculatedAmount = buy(sellToken, buyToken, specifiedAmount);
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}
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trade.gasUsed = gasBefore - gasleft();
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trade.price = getPriceAt(address(sellToken), address(buyToken));
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@@ -72,21 +82,17 @@ contract IntegralSwapAdapter is ISwapAdapter {
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override
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returns (uint256[] memory limits)
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{
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(
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,
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,
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,
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uint256 limitMax0,
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,
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uint256 limitMax1
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) = relayer.getPoolState(address(sellToken), address(buyToken));
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(,,, uint256 limitMax0,, uint256 limitMax1) =
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relayer.getPoolState(address(sellToken), address(buyToken));
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limits = new uint256[](2);
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limits[0] = limitMax0;
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limits[1] = limitMax1;
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/**
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* @dev minLimits in integral are the args: 2(for sellToken, the one before limitMax0)
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* and 4(for buyToken, the one before limitMax1) of the function relayer.getPoolState(sellToken, buyToken);
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* @dev minLimits in integral are the args: 2(for sellToken, the one
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* before limitMax0)
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* and 4(for buyToken, the one before limitMax1) of the function
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* relayer.getPoolState(sellToken, buyToken);
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* an implementation of them can be found in the test of this adapter
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*/
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}
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@@ -141,12 +147,12 @@ contract IntegralSwapAdapter is ISwapAdapter {
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/// @param buyToken The address of the token being bought.
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/// @param amount The amount to be traded.
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/// @return uint256 The amount of tokens received.
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function sell(
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IERC20 sellToken,
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IERC20 buyToken,
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uint256 amount
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) internal returns (uint256) {
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uint256 amountOut = relayer.quoteSell(address(sellToken), address(buyToken), amount);
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function sell(IERC20 sellToken, IERC20 buyToken, uint256 amount)
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internal
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returns (uint256)
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{
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uint256 amountOut =
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relayer.quoteSell(address(sellToken), address(buyToken), amount);
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if (amountOut == 0) {
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revert Unavailable("AmountOut is zero!");
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}
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@@ -154,7 +160,8 @@ contract IntegralSwapAdapter is ISwapAdapter {
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sellToken.safeTransferFrom(msg.sender, address(this), amount);
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sellToken.safeIncreaseAllowance(address(relayer), amount);
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relayer.sell(ITwapRelayer.SellParams({
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relayer.sell(
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ITwapRelayer.SellParams({
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tokenIn: address(sellToken),
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tokenOut: address(buyToken),
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wrapUnwrap: false,
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@@ -162,7 +169,8 @@ contract IntegralSwapAdapter is ISwapAdapter {
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submitDeadline: uint32(block.timestamp + SWAP_DEADLINE_SEC),
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amountIn: amount,
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amountOutMin: amountOut
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}));
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})
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);
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return amountOut;
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}
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@@ -172,12 +180,13 @@ contract IntegralSwapAdapter is ISwapAdapter {
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/// @param buyToken The address of the token being bought.
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/// @param amountBought The amount of buyToken tokens to buy.
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/// @return uint256 The amount of tokens received.
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function buy(
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IERC20 sellToken,
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IERC20 buyToken,
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uint256 amountBought
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) internal returns (uint256) {
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uint256 amountIn = relayer.quoteBuy(address(sellToken), address(buyToken), amountBought);
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function buy(IERC20 sellToken, IERC20 buyToken, uint256 amountBought)
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internal
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returns (uint256)
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{
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uint256 amountIn = relayer.quoteBuy(
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address(sellToken), address(buyToken), amountBought
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);
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if (amountIn == 0) {
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revert Unavailable("AmountIn is zero!");
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}
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@@ -185,7 +194,8 @@ contract IntegralSwapAdapter is ISwapAdapter {
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sellToken.safeTransferFrom(msg.sender, address(this), amountIn);
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sellToken.safeIncreaseAllowance(address(relayer), amountIn);
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relayer.buy(ITwapRelayer.BuyParams({
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relayer.buy(
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ITwapRelayer.BuyParams({
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tokenIn: address(sellToken),
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tokenOut: address(buyToken),
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wrapUnwrap: false,
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@@ -193,7 +203,8 @@ contract IntegralSwapAdapter is ISwapAdapter {
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submitDeadline: uint32(block.timestamp + SWAP_DEADLINE_SEC),
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amountInMax: amountIn,
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amountOut: amountBought
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}));
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})
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);
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return amountIn;
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}
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@@ -201,13 +212,21 @@ contract IntegralSwapAdapter is ISwapAdapter {
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/// @notice Get swap price including fee
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/// @param sellToken token to sell
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/// @param buyToken token to buy
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function getPriceAt(address sellToken, address buyToken) internal view returns(Fraction memory) {
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uint256 priceWithoutFee = relayer.getPriceByTokenAddresses(address(sellToken), address(buyToken));
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function getPriceAt(address sellToken, address buyToken)
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internal
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view
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returns (Fraction memory)
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{
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uint256 priceWithoutFee = relayer.getPriceByTokenAddresses(
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address(sellToken), address(buyToken)
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);
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ITwapFactory factory = ITwapFactory(relayer.factory());
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address pairAddress = factory.getPair(address(sellToken), address(buyToken));
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address pairAddress =
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factory.getPair(address(sellToken), address(buyToken));
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// get swapFee formatted; swapFee is a constant
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uint256 swapFeeFormatted = (STANDARD_TOKEN_DECIMALS - relayer.swapFee(pairAddress));
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uint256 swapFeeFormatted =
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(STANDARD_TOKEN_DECIMALS - relayer.swapFee(pairAddress));
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// get token decimals
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uint256 sellTokenDecimals = 10 ** ERC20(sellToken).decimals();
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@@ -215,16 +234,21 @@ contract IntegralSwapAdapter is ISwapAdapter {
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/**
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* @dev
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* Denominator works as a "standardizer" for the price rather than a reserve value
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* as Integral takes prices from oracles and do not operate with reserves;
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* Denominator works as a "standardizer" for the price rather than a
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* reserve value
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* as Integral takes prices from oracles and do not operate with
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* reserves;
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* it is therefore used to maintain integrity for the Fraction division,
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* as numerator and denominator could have different token decimals(es. ETH(18)-USDC(6)).
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* Both numerator and denominator are also multiplied by STANDARD_TOKEN_DECIMALS
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* as numerator and denominator could have different token decimals(es.
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* ETH(18)-USDC(6)).
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* Both numerator and denominator are also multiplied by
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* STANDARD_TOKEN_DECIMALS
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* to ensure that precision losses are minimized or null.
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*/
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return Fraction(
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priceWithoutFee * STANDARD_TOKEN_DECIMALS,
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STANDARD_TOKEN_DECIMALS * sellTokenDecimals * swapFeeFormatted / buyTokenDecimals
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STANDARD_TOKEN_DECIMALS * sellTokenDecimals * swapFeeFormatted
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/ buyTokenDecimals
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);
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}
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}
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@@ -276,8 +300,12 @@ interface ITwapRelayer {
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uint256 amountIn,
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uint256 indexed delayOrderId
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);
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event RebalanceSellWithOneInch(address indexed oneInchRouter, uint256 gas, bytes data);
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event OneInchRouterWhitelisted(address indexed oneInchRouter, bool whitelisted);
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event RebalanceSellWithOneInch(
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address indexed oneInchRouter, uint256 gas, bytes data
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);
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event OneInchRouterWhitelisted(
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address indexed oneInchRouter, bool whitelisted
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);
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function factory() external pure returns (address);
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@@ -289,7 +317,10 @@ interface ITwapRelayer {
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function rebalancer() external view returns (address);
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function isOneInchRouterWhitelisted(address oneInchRouter) external view returns (bool);
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function isOneInchRouterWhitelisted(address oneInchRouter)
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external
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view
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returns (bool);
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function setOwner(address _owner) external;
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@@ -309,19 +340,26 @@ interface ITwapRelayer {
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function tokenLimitMin(address token) external pure returns (uint256);
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function tokenLimitMaxMultiplier(address token) external pure returns (uint256);
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function tokenLimitMaxMultiplier(address token)
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external
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pure
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returns (uint256);
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function tolerance(address pair) external pure returns (uint16);
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function setRebalancer(address _rebalancer) external;
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function whitelistOneInchRouter(address oneInchRouter, bool whitelisted) external;
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function whitelistOneInchRouter(address oneInchRouter, bool whitelisted)
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external;
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function getTolerance(address pair) external pure returns (uint16);
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function getTokenLimitMin(address token) external pure returns (uint256);
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function getTokenLimitMaxMultiplier(address token) external pure returns (uint256);
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function getTokenLimitMaxMultiplier(address token)
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external
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pure
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returns (uint256);
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function getTwapInterval(address pair) external pure returns (uint32);
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@@ -335,7 +373,10 @@ interface ITwapRelayer {
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uint32 submitDeadline;
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}
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function sell(SellParams memory sellParams) external payable returns (uint256 orderId);
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function sell(SellParams memory sellParams)
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external
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payable
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returns (uint256 orderId);
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struct BuyParams {
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address tokenIn;
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@@ -347,18 +388,20 @@ interface ITwapRelayer {
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uint32 submitDeadline;
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}
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function buy(BuyParams memory buyParams) external payable returns (uint256 orderId);
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function buy(BuyParams memory buyParams)
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external
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payable
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returns (uint256 orderId);
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function getPriceByPairAddress(address pair, bool inverted)
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external
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view
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returns (
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uint8 xDecimals,
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uint8 yDecimals,
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uint256 price
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);
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returns (uint8 xDecimals, uint8 yDecimals, uint256 price);
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function getPriceByTokenAddresses(address tokenIn, address tokenOut) external view returns (uint256 price);
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function getPriceByTokenAddresses(address tokenIn, address tokenOut)
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external
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view
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returns (uint256 price);
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function getPoolState(address token0, address token1)
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external
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@@ -372,29 +415,19 @@ interface ITwapRelayer {
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uint256 limitMax1
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);
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function quoteSell(
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address tokenIn,
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address tokenOut,
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uint256 amountIn
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) external view returns (uint256 amountOut);
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function quoteSell(address tokenIn, address tokenOut, uint256 amountIn)
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external
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view
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returns (uint256 amountOut);
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function quoteBuy(
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address tokenIn,
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address tokenOut,
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uint256 amountOut
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) external view returns (uint256 amountIn);
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function quoteBuy(address tokenIn, address tokenOut, uint256 amountOut)
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external
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view
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returns (uint256 amountIn);
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function approve(
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address token,
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uint256 amount,
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address to
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) external;
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function approve(address token, uint256 amount, address to) external;
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function withdraw(
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address token,
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uint256 amount,
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address to
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) external;
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function withdraw(address token, uint256 amount, address to) external;
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function rebalanceSellWithDelay(
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address tokenIn,
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@@ -412,12 +445,17 @@ interface ITwapRelayer {
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}
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interface ITwapFactory {
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event PairCreated(address indexed token0, address indexed token1, address pair, uint256);
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event PairCreated(
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address indexed token0, address indexed token1, address pair, uint256
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);
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event OwnerSet(address owner);
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function owner() external view returns (address);
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function getPair(address tokenA, address tokenB) external view returns (address pair);
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function getPair(address tokenA, address tokenB)
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external
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view
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returns (address pair);
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function allPairs(uint256) external view returns (address pair);
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@@ -432,41 +470,19 @@ interface ITwapFactory {
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function setOwner(address) external;
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function setMintFee(
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address tokenA,
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address tokenB,
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uint256 fee
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) external;
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function setMintFee(address tokenA, address tokenB, uint256 fee) external;
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function setBurnFee(
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address tokenA,
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address tokenB,
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uint256 fee
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) external;
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function setBurnFee(address tokenA, address tokenB, uint256 fee) external;
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function setSwapFee(
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address tokenA,
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address tokenB,
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uint256 fee
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) external;
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function setSwapFee(address tokenA, address tokenB, uint256 fee) external;
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function setOracle(
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address tokenA,
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address tokenB,
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address oracle
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) external;
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function setOracle(address tokenA, address tokenB, address oracle)
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external;
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function setTrader(
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address tokenA,
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address tokenB,
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address trader
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) external;
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function setTrader(address tokenA, address tokenB, address trader)
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external;
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function collect(
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address tokenA,
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address tokenB,
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|
address to
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|
) external;
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function collect(address tokenA, address tokenB, address to) external;
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function withdraw(
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|
address tokenA,
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|
|
@@ -491,20 +507,39 @@ interface ITwapERC20 is IERC20 {
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|
bytes32 s
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|
) external;
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function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
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function increaseAllowance(address spender, uint256 addedValue)
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external
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returns (bool);
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function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
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function decreaseAllowance(address spender, uint256 subtractedValue)
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external
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|
returns (bool);
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|
}
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interface IReserves {
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|
function getReserves() external view returns (uint112 reserve0, uint112 reserve1);
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|
function getReserves()
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|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint112 reserve0, uint112 reserve1);
|
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|
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|
|
function getFees() external view returns (uint256 fee0, uint256 fee1);
|
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|
|
|
}
|
|
|
|
|
|
|
|
|
|
interface ITwapPair is ITwapERC20, IReserves {
|
|
|
|
|
event Mint(address indexed sender, uint256 amount0In, uint256 amount1In, uint256 liquidityOut, address indexed to);
|
|
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|
|
event Burn(address indexed sender, uint256 amount0Out, uint256 amount1Out, uint256 liquidityIn, address indexed to);
|
|
|
|
|
event Mint(
|
|
|
|
|
address indexed sender,
|
|
|
|
|
uint256 amount0In,
|
|
|
|
|
uint256 amount1In,
|
|
|
|
|
uint256 liquidityOut,
|
|
|
|
|
address indexed to
|
|
|
|
|
);
|
|
|
|
|
event Burn(
|
|
|
|
|
address indexed sender,
|
|
|
|
|
uint256 amount0Out,
|
|
|
|
|
uint256 amount1Out,
|
|
|
|
|
uint256 liquidityIn,
|
|
|
|
|
address indexed to
|
|
|
|
|
);
|
|
|
|
|
event Swap(
|
|
|
|
|
address indexed sender,
|
|
|
|
|
uint256 amount0In,
|
|
|
|
|
@@ -541,7 +576,9 @@ interface ITwapPair is ITwapERC20, IReserves {
|
|
|
|
|
|
|
|
|
|
function setBurnFee(uint256 fee) external;
|
|
|
|
|
|
|
|
|
|
function burn(address to) external returns (uint256 amount0, uint256 amount1);
|
|
|
|
|
function burn(address to)
|
|
|
|
|
external
|
|
|
|
|
returns (uint256 amount0, uint256 amount1);
|
|
|
|
|
|
|
|
|
|
function swapFee() external view returns (uint256);
|
|
|
|
|
|
|
|
|
|
@@ -569,15 +606,33 @@ interface ITwapPair is ITwapERC20, IReserves {
|
|
|
|
|
address _trader
|
|
|
|
|
) external;
|
|
|
|
|
|
|
|
|
|
function getSwapAmount0In(uint256 amount1Out, bytes calldata data) external view returns (uint256 swapAmount0In);
|
|
|
|
|
function getSwapAmount0In(uint256 amount1Out, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 swapAmount0In);
|
|
|
|
|
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|
|
|
|
function getSwapAmount1In(uint256 amount0Out, bytes calldata data) external view returns (uint256 swapAmount1In);
|
|
|
|
|
function getSwapAmount1In(uint256 amount0Out, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 swapAmount1In);
|
|
|
|
|
|
|
|
|
|
function getSwapAmount0Out(uint256 amount1In, bytes calldata data) external view returns (uint256 swapAmount0Out);
|
|
|
|
|
function getSwapAmount0Out(uint256 amount1In, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 swapAmount0Out);
|
|
|
|
|
|
|
|
|
|
function getSwapAmount1Out(uint256 amount0In, bytes calldata data) external view returns (uint256 swapAmount1Out);
|
|
|
|
|
function getSwapAmount1Out(uint256 amount0In, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 swapAmount1Out);
|
|
|
|
|
|
|
|
|
|
function getDepositAmount0In(uint256 amount0, bytes calldata data) external view returns (uint256 depositAmount0In);
|
|
|
|
|
function getDepositAmount0In(uint256 amount0, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 depositAmount0In);
|
|
|
|
|
|
|
|
|
|
function getDepositAmount1In(uint256 amount1, bytes calldata data) external view returns (uint256 depositAmount1In);
|
|
|
|
|
function getDepositAmount1In(uint256 amount1, bytes calldata data)
|
|
|
|
|
external
|
|
|
|
|
view
|
|
|
|
|
returns (uint256 depositAmount1In);
|
|
|
|
|
}
|
|
|
|
|
|