37 lines
956 B
Solidity
37 lines
956 B
Solidity
/*
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Copyright 2021 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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pragma experimental ABIEncoderV2;
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import "../intf/ICurve.sol";
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contract CurveSampler {
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function sampleFromCurve(
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address curveAddress,
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int128 fromTokenIdx,
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int128 toTokenIdx,
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uint256[] memory takerTokenAmounts
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)
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public
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view
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returns (uint256[] memory makerTokenAmounts)
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{
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uint256 numSamples = takerTokenAmounts.length;
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makerTokenAmounts = new uint256[](numSamples);
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for (uint256 i = 0; i < numSamples; i++) {
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uint256 buyAmount = ICurve(curveAddress).get_dy_underlying(fromTokenIdx, toTokenIdx, takerTokenAmounts[i]);
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makerTokenAmounts[i] = buyAmount;
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// Break early if there are 0 amounts
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if (makerTokenAmounts[i] == 0) {
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break;
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}
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}
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return makerTokenAmounts;
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}
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} |