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- Added fallback condition for price prediction, both In and Out

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This commit is contained in:
eboado 2020-12-03 11:36:15 +01:00
parent ab5303bc7c
commit 84629bca2e
1 changed files with 20 additions and 3 deletions
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23
contracts/adapters/BaseUniswapAdapter.sol
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@ -345,7 +345,14 @@ abstract contract BaseUniswapAdapter is FlashLoanReceiverBase, IBaseUniswapAdapt
pathWithWeth[0] = reserveIn;
pathWithWeth[1] = WETH_ADDRESS;
pathWithWeth[2] = reserveOut;
amountsWithWeth = UNISWAP_ROUTER.getAmountsOut(finalAmountIn, pathWithWeth);
try UNISWAP_ROUTER.getAmountsOut(finalAmountIn, pathWithWeth) returns (
uint256[] memory resultsWithWeth
) {
amountsWithWeth = resultsWithWeth;
} catch {
amountsWithWeth = new uint256[](2);
}
uint256 bestAmountOut;
try UNISWAP_ROUTER.getAmountsOut(finalAmountIn, simplePath) returns (
@ -374,7 +381,9 @@ abstract contract BaseUniswapAdapter is FlashLoanReceiverBase, IBaseUniswapAdapt
outPerInPrice,
_calcUsdValue(reserveIn, amountIn, reserveInDecimals),
_calcUsdValue(reserveOut, bestAmountOut, reserveOutDecimals),
(bestAmountOut == amountsWithoutWeth[1]) ? simplePath : pathWithWeth
(bestAmountOut == 0) ? new address[](2) : (bestAmountOut == amountsWithoutWeth[1])
? simplePath
: pathWithWeth
);
}
@ -436,11 +445,19 @@ abstract contract BaseUniswapAdapter is FlashLoanReceiverBase, IBaseUniswapAdapt
uint256[] memory amountsWithoutWeth;
uint256[] memory amountsWithWeth;
address[] memory pathWithWeth = new address[](3);
pathWithWeth[0] = reserveIn;
pathWithWeth[1] = WETH_ADDRESS;
pathWithWeth[2] = reserveOut;
try UNISWAP_ROUTER.getAmountsIn(amountOut, pathWithWeth) returns (
uint256[] memory resultsWithWeth
) {
amountsWithWeth = resultsWithWeth;
} catch {
return (new uint256[](2), new address[](2));
}
amountsWithWeth = UNISWAP_ROUTER.getAmountsIn(amountOut, pathWithWeth);
try UNISWAP_ROUTER.getAmountsIn(amountOut, simplePath) returns (