bab34c2d21
* `@0x/contracts-erc20-bridge-sampler`: Add TwoHopSampler + refactor * `@0x/asset-swapper`: Refactor + add two-hop skeleton * Round out two-hop support in asset-swapper * Add BalancerSampler, use it for two-hop quotes * Fix bugs discovered from simbot * rebases are hard * Add intermediate token to MultiHop source breakdown * Fix market buy bugs * Use hybrid on-chain/off-chain sampling for Balancer * Another day, another rebase * Update changelogs * Address PR feedback, CI fixes * Address more PR feedback
72 lines
2.2 KiB
Solidity
72 lines
2.2 KiB
Solidity
/*
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Copyright 2019 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.5.9;
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// solhint-disable func-name-mixedcase
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interface ICurve {
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/// @dev Sell `sellAmount` of `fromToken` token and receive `toToken` token.
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/// This function exists on later versions of Curve (USDC/DAI/USDT)
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/// @param i The token index being sold.
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/// @param j The token index being bought.
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/// @param sellAmount The amount of token being bought.
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/// @param minBuyAmount The minimum buy amount of the token being bought.
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function exchange_underlying(
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int128 i,
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int128 j,
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uint256 sellAmount,
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uint256 minBuyAmount
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)
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external;
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/// @dev Get the amount of `toToken` by selling `sellAmount` of `fromToken`
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/// @param i The token index being sold.
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/// @param j The token index being bought.
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/// @param sellAmount The amount of token being bought.
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function get_dy_underlying(
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int128 i,
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int128 j,
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uint256 sellAmount
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)
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external
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returns (uint256 dy);
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/// @dev Get the amount of `fromToken` by buying `buyAmount` of `toToken`
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/// This function exists on later versions of Curve (USDC/DAI/USDT)
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/// @param i The token index being sold.
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/// @param j The token index being bought.
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/// @param buyAmount The amount of token being bought.
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function get_dx_underlying(
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int128 i,
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int128 j,
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uint256 buyAmount
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)
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external
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returns (uint256 dx);
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/// @dev Get the underlying token address from the token index
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/// @param i The token index.
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function underlying_coins(
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int128 i
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)
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external
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returns (address tokenAddress);
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}
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