Instadapp/dsa-resolvers-deprecated
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Added new oasis resolver

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This commit is contained in:
Thrilok Kumar 2020-04-28 02:28:50 +05:30
parent 03cea2a064
commit 3eef3a6a34
1 changed files with 72 additions and 0 deletions
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protocols/oasis.sol Normal file
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pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
interface OasisInterface {
function getMinSell(TokenInterface pay_gem) external view returns (uint);
function getBuyAmount(address dest, address src, uint srcAmt) external view returns(uint);
function getPayAmount(address src, address dest, uint destAmt) external view returns (uint);
}
interface TokenInterface {
function allowance(address, address) external view returns (uint);
function balanceOf(address) external view returns (uint);
function approve(address, uint) external;
function transfer(address, uint) external returns (bool);
}
contract Helpers {
/**
* @dev get Ethereum address
*/
function getAddressETH() public pure returns (address) {
return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
}
}
contract OasisHelpers is Helpers {
/**
* @dev Return WETH address
*/
function getAddressWETH() internal pure returns (address) {
return 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
}
/**
* @dev Return Oasis Address
*/
function getOasisAddr() internal pure returns (address) {
return 0x794e6e91555438aFc3ccF1c5076A74F42133d08D;
}
function changeEthAddress(address buy, address sell) internal pure returns(TokenInterface _buy, TokenInterface _sell){
_buy = buy == getAddressETH() ? TokenInterface(getAddressWETH()) : TokenInterface(buy);
_sell = sell == getAddressETH() ? TokenInterface(getAddressWETH()) : TokenInterface(sell);
}
}
contract Resolver is OasisHelpers {
function getBuyAmount(address buyAddr, address sellAddr, uint sellAmt) public view returns (uint buyAmt) {
(TokenInterface _buyAddr, TokenInterface _sellAddr) = changeEthAddress(buyAddr, sellAddr);
buyAmt = OasisInterface(getOasisAddr()).getBuyAmount(address(_buyAddr), address(_sellAddr), sellAmt);
}
function getSellAmount(address buyAddr, address sellAddr, uint buyAmt) public view returns (uint sellAmt) {
(TokenInterface _buyAddr, TokenInterface _sellAddr) = changeEthAddress(buyAddr, sellAddr);
sellAmt = OasisInterface(getOasisAddr()).getPayAmount(address(_sellAddr), address(_buyAddr), buyAmt);
}
function getMinSellAmount(address sellAddr) public view returns (uint minAmt) {
(, TokenInterface _sellAddr) = changeEthAddress(getAddressETH(), sellAddr);
minAmt = OasisInterface(getOasisAddr()).getMinSell(_sellAddr);
}
}
contract InstaOasisResolver is Resolver {
string public constant name = "Oasis-Resolver-v1";
}