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DeFi Limit Order Contract done

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This commit is contained in:
Samyak Jain 2021-07-25 00:35:22 +05:30
parent 11c08ea744
commit d9e8d62cd7
4 changed files with 185 additions and 0 deletions
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15
contracts/mainnet/connectors/automated_defi_limit_order/events.sol Normal file
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pragma solidity ^0.7.0;
contract Events {
event LogCreate(address _tokenFrom, address _tokenTo, uint256 _price, uint32 _route, bytes8 _pos);
event LogCancel(address _tokenFrom, address _tokenTo, bytes8 _orderId);
event LogCancelPublic(address _tokenFrom, address _tokenTo, bytes8 _orderId);
event LogSell(
address indexed buyToken,
address indexed sellToken,
uint256 buyAmt,
uint256 sellAmt,
uint256 getId,
uint256 setId
);
}

14
contracts/mainnet/connectors/automated_defi_limit_order/helpers.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
import { DSMath } from "../../common/math.sol";
import { Basic } from "../../common/basic.sol";
import { ComptrollerInterface, COMPInterface, CompoundMappingInterface } from "./interface.sol";
abstract contract Helpers is DSMath, Basic {
/**
* @dev Compound Comptroller
*/
LimitOrderInterface internal constant limitOrderContract = LimitOrderInterface(address(0)); // TODO: add Limit Order contract's address
}

19
contracts/mainnet/connectors/automated_defi_limit_order/interface.sol Normal file
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pragma solidity ^0.7.0;
interface LimitOrderInterface {
function create(address _tokenFrom, address _tokenTo, uint128 _price, uint32 _route, bytes8 _pos) external;
function create(address _tokenFrom, address _tokenTo, uint128 _price, uint32 _route) external;
function sell(address _tokenFrom, address _tokenTo, uint _amountFrom, bytes8 _orderId, address _to) external returns (uint _amountTo);
function sell(
address _tokenFrom,
address _tokenTo,
uint _amountFrom,
bytes8[] memory _orderIds,
uint[] memory _distributions,
uint _units,
address _to
) external returns (uint _amountTo);
function cancel(address _tokenFrom, address _tokenTo, bytes8 _orderId) external;
function cancelPublic(address _tokenFrom, address _tokenTo, bytes8 _orderId) external;
}

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contracts/mainnet/connectors/automated_defi_limit_order/main.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title COMP.
* @dev Claim COMP.
*/
import { TokenInterface } from "../../common/interfaces.sol";
import { Stores } from "../../common/stores.sol";
import { Helpers } from "./helpers.sol";
import { Events } from "./events.sol";
abstract contract CompResolver is Events, Helpers {
function create(
address _tokenFrom,
address _tokenTo,
uint128 _price,
uint32 _route,
bytes8 _pos
) external payable returns (
string memory _eventName,
bytes memory _eventParam
) {
if (_pos == bytes8(0)) {
limitOrderContract.create(_tokenFrom, _tokenTo, _price, _route);
} else {
limitOrderContract.create(_tokenFrom, _tokenTo, _price, _route, _pos);
}
_eventName = "LogCreate(address,address,uint256,uint32,bytes8)";
_eventParam = abi.encode(_tokenFrom, _tokenTo, _price, _route, _pos);
}
function cancel(
address _tokenFrom,
address _tokenTo,
bytes8 _orderId
) external payable returns (
string memory _eventName,
bytes memory _eventParam
) {
limitOrderContract.cancel(_tokenFrom, _tokenTo, _orderId);
_eventName = "LogCancel(address,address,bytes8)";
_eventParam = abi.encode(_tokenFrom, _tokenTo, _orderId);
}
function cancelPublic(
address _tokenFrom,
address _tokenTo,
bytes8 _orderId
) external payable returns (
string memory _eventName,
bytes memory _eventParam
) {
limitOrderContract.cancelPublic(_tokenFrom, _tokenTo, _orderId);
_eventName = "LogCancelPublic(address,address,bytes8)";
_eventParam = abi.encode(_tokenFrom, _tokenTo, _orderId);
}
function _sellSlippageCheck(
TokenInterface buyToken,
TokenInterface sellToken,
uint sellAmt,
uint buyAmt,
uint unitAmt
) internal {
TokenInterface buyToken = TokenInterface(buyAddr);
TokenInterface sellToken = TokenInterface(sellAddr);
(uint _buyDec, uint _sellDec) = getTokensDec(buyToken, sellToken);
uint _sellAmt18 = convertTo18(_sellDec, sellAmt);
uint _slippageAmt = convert18ToDec(_buyDec, wmul(unitAmt, _sellAmt18));
require(_slippageAmt <= buyAmt, "Too much slippage");
}
function sell(
address buyAddr,
address sellAddr,
uint sellAmt,
uint unitAmt,
bytes8 _orderId,
uint getId,
uint setId
) external payable returns (
string memory _eventName,
bytes memory _eventParam
) {
uint buyAmt = limitOrderContract.sell(sellAddr, buyAddr, sellAmt, _orderId, address(this));
_sellSlippageCheck(TokenInterface(buyAddr), TokenInterface(sellAddr), sellAmt, buyAmt, unitAmt);
_eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
_eventParam = abi.encode(buyAddr, sellAddr, buyAmt, sellAmt, 0, setId);
}
function sell(
address buyAddr,
address sellAddr,
uint sellAmt,
bytes8[] memory orderIds,
uint[] memory distributions,
uint units,
uint getId,
uint setId
) external payable returns (
string memory _eventName,
bytes memory _eventParam
) {
uint buyAmt = limitOrderContract.sell(sellAddr, buyAddr, sellAmt, orderIds, distributions, units, address(this));
_sellSlippageCheck(TokenInterface(buyAddr), TokenInterface(sellAddr), sellAmt, buyAmt, unitAmt);
_eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
_eventParam = abi.encode(buyAddr, sellAddr, buyAmt, sellAmt, 0, setId);
}
/**
* @dev Delegate votes.
* @notice Delegate votes.
* @param delegatee The address to delegate the votes to.
*/
function delegate(address delegatee) external payable returns (string memory _eventName, bytes memory _eventParam) {
require(compToken.delegates(address(this)) != delegatee, "Already delegated to same delegatee.");
compToken.delegate(delegatee);
_eventName = "LogDelegate(address)";
_eventParam = abi.encode(delegatee);
}
}
contract ConnectV2DefiLimitOrders is CompResolver {
string public constant name = "DeFi-Limit-Order-v1";
}