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Allow for batching multiple buy/sell samples

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This commit is contained in:
Jacob Evans 2020-01-06 17:19:00 +10:00
parent e792afad17
commit 4a2575136f
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1 changed files with 55 additions and 0 deletions
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contracts/erc20-bridge-sampler/contracts/src/ERC20BridgeSampler.sol
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@ -41,6 +41,61 @@ contract ERC20BridgeSampler is
uint256 constant internal UNISWAP_SAMPLE_CALL_GAS = 150e3; uint256 constant internal UNISWAP_SAMPLE_CALL_GAS = 150e3;
uint256 constant internal ETH2DAI_SAMPLE_CALL_GAS = 250e3; uint256 constant internal ETH2DAI_SAMPLE_CALL_GAS = 250e3;
struct OrdersAndSample {
uint256[] orderFillableTakerAssetAmounts;
uint256[][] makerTokenAmountsBySource;
}
function queryMultipleOrdersAndSampleBuys(
LibOrder.Order[][] memory orders,
bytes[][] memory orderSignatures,
address[] memory sources,
uint256[] memory makerTokenAmounts
)
public
view
returns (
OrdersAndSample[] memory ordersAndSamples
)
{
ordersAndSamples = new OrdersAndSample[](orders.length);
uint256[] memory amounts = new uint256[](1);
for (uint256 i = 0; i != orders.length; i++) {
amounts[0] = makerTokenAmounts[i];
(
uint256[] memory orderFillableTakerAssetAmounts,
uint256[][] memory makerTokenAmountsBySource
) = queryOrdersAndSampleBuys(orders[i], orderSignatures[i], sources, amounts);
ordersAndSamples[i].orderFillableTakerAssetAmounts = orderFillableTakerAssetAmounts;
ordersAndSamples[i].makerTokenAmountsBySource = makerTokenAmountsBySource;
}
}
function queryMultipleOrdersAndSampleSells(
LibOrder.Order[][] memory orders,
bytes[][] memory orderSignatures,
address[] memory sources,
uint256[] memory makerTokenAmounts
)
public
view
returns (
OrdersAndSample[] memory ordersAndSamples
)
{
ordersAndSamples = new OrdersAndSample[](orders.length);
uint256[] memory amounts = new uint256[](1);
for (uint256 i = 0; i != orders.length; i++) {
amounts[0] = makerTokenAmounts[i];
(
uint256[] memory orderFillableTakerAssetAmounts,
uint256[][] memory makerTokenAmountsBySource
) = queryOrdersAndSampleSells(orders[i], orderSignatures[i], sources, amounts);
ordersAndSamples[i].orderFillableTakerAssetAmounts = orderFillableTakerAssetAmounts;
ordersAndSamples[i].makerTokenAmountsBySource = makerTokenAmountsBySource;
}
}
/// @dev Query native orders and sample sell quotes on multiple DEXes at once. /// @dev Query native orders and sample sell quotes on multiple DEXes at once.
/// @param orders Native orders to query. /// @param orders Native orders to query.
/// @param orderSignatures Signatures for each respective order in `orders`. /// @param orderSignatures Signatures for each respective order in `orders`.