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https://github.com/Instadapp/dsa-resolvers-deprecated.git
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Added sbtc curve resolver and refactored susd pool
This commit is contained in:
Thrilok Kumar
parent
6d09270bd1
commit
84a32944e6
189
contracts/protocols/curve_sbtc.sol
Normal file
189
contracts/protocols/curve_sbtc.sol
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@ -0,0 +1,189 @@
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pragma solidity ^0.6.0;
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pragma experimental ABIEncoderV2;
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interface ICurve {
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function get_virtual_price() external view returns (uint256 out);
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function coins(int128 tokenId) external view returns (address token);
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function calc_token_amount(uint256[3] calldata amounts, bool deposit) external view returns (uint256 amount);
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function get_dy(int128 sellTokenId, int128 buyTokenId, uint256 sellTokenAmt) external view returns (uint256 buyTokenAmt);
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}
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interface TokenInterface {
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function decimals() external view returns (uint);
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function totalSupply() external view returns (uint256);
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function balanceOf(address) external view returns (uint);
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}
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contract DSMath {
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function add(uint x, uint y) internal pure returns (uint z) {
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require((z = x + y) >= x, "math-not-safe");
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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require(y == 0 || (z = x * y) / y == x, "math-not-safe");
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}
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function sub(uint x, uint y) internal pure returns (uint z) {
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require((z = x - y) <= x, "sub-overflow");
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}
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uint constant WAD = 10 ** 18;
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), WAD / 2) / WAD;
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}
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function wdiv(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, WAD), y / 2) / y;
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}
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}
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contract CurveHelpers is DSMath {
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/**
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* @dev Return Curve sBTC Swap Address
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*/
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function getCurveSwapAddr() internal pure returns (address) {
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return 0x7fC77b5c7614E1533320Ea6DDc2Eb61fa00A9714;
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}
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/**
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* @dev Return Curve sBTC Token Address
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*/
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function getCurveTokenAddr() internal pure returns (address) {
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return 0x075b1bb99792c9E1041bA13afEf80C91a1e70fB3;
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}
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function getTokenI(address token) internal pure returns (int128 i) {
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if (token == address(0xEB4C2781e4ebA804CE9a9803C67d0893436bB27D)) {
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// renBTC Token
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i = 0;
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} else if (token == address(0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599)) {
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// WBTC Token
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i = 1;
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} else if (token == address(0xfE18be6b3Bd88A2D2A7f928d00292E7a9963CfC6)) {
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// sBTC Token
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i = 2;
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} else {
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revert("token-not-found.");
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}
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}
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function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = mul(_amt, 10 ** (18 - _dec));
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}
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function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = (_amt / 10 ** (18 - _dec));
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}
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function getBuyUnitAmt(
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address buyAddr,
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address sellAddr,
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uint sellAmt,
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uint buyAmt,
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uint slippage
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) internal view returns (uint unitAmt) {
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uint _sellAmt = convertTo18(TokenInterface(sellAddr).decimals(), sellAmt);
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uint _buyAmt = convertTo18(TokenInterface(buyAddr).decimals(), buyAmt);
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unitAmt = wdiv(_buyAmt, _sellAmt);
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unitAmt = wmul(unitAmt, sub(WAD, slippage));
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}
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function getDepositUnitAmt(
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address token,
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uint depositAmt,
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uint curveAmt,
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uint slippage
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) internal view returns (uint unitAmt) {
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uint _depositAmt = convertTo18(TokenInterface(token).decimals(), depositAmt);
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uint _curveAmt = convertTo18(TokenInterface(getCurveTokenAddr()).decimals(), curveAmt);
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unitAmt = wdiv(_curveAmt, _depositAmt);
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unitAmt = wmul(unitAmt, sub(WAD, slippage));
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}
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function getWithdrawtUnitAmt(
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address token,
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uint withdrawAmt,
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uint curveAmt,
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uint slippage
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) internal view returns (uint unitAmt) {
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uint _withdrawAmt = convertTo18(TokenInterface(token).decimals(), withdrawAmt);
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uint _curveAmt = convertTo18(TokenInterface(getCurveTokenAddr()).decimals(), curveAmt);
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unitAmt = wdiv(_curveAmt, _withdrawAmt);
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unitAmt = wmul(unitAmt, add(WAD, slippage));
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}
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}
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contract Resolver is CurveHelpers {
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function getBuyAmount(address buyAddr, address sellAddr, uint sellAmt, uint slippage)
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public
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view
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returns (uint buyAmt, uint unitAmt, uint virtualPrice)
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{
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ICurve curve = ICurve(getCurveSwapAddr());
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buyAmt = curve.get_dy(getTokenI(sellAddr), getTokenI(buyAddr), sellAmt);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getBuyUnitAmt(buyAddr, sellAddr, sellAmt, buyAmt, slippage);
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}
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function getDepositAmount(address token, uint depositAmt, uint slippage)
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public
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view
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returns (uint curveAmt, uint unitAmt, uint virtualPrice)
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{
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uint[3] memory amts;
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amts[uint(getTokenI(token))] = depositAmt;
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ICurve curve = ICurve(getCurveSwapAddr());
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curveAmt = curve.calc_token_amount(amts, true);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getDepositUnitAmt(token, depositAmt, curveAmt, slippage);
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}
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function getWithdrawAmount(address token, uint withdrawAmt, uint slippage)
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public
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view
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returns (uint curveAmt, uint unitAmt, uint virtualPrice)
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{
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uint[3] memory amts;
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amts[uint(getTokenI(token))] = withdrawAmt;
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ICurve curve = ICurve(getCurveSwapAddr());
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curveAmt = curve.calc_token_amount(amts, false);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getWithdrawtUnitAmt(token, withdrawAmt, curveAmt, slippage);
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}
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function getPosition(
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address user
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) public view returns (
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uint userBal,
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uint totalSupply,
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uint virtualPrice,
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uint userShare,
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uint poolRenBtcBal,
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uint poolWbtcBal,
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uint poolSbtcBal
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) {
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TokenInterface curveToken = TokenInterface(getCurveTokenAddr());
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userBal = curveToken.balanceOf(user);
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totalSupply = curveToken.totalSupply();
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userShare = wdiv(userBal, totalSupply);
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ICurve curveContract = ICurve(getCurveSwapAddr());
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virtualPrice = curveContract.get_virtual_price();
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poolRenBtcBal = TokenInterface(curveContract.coins(0)).balanceOf(getCurveSwapAddr());
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poolWbtcBal = TokenInterface(curveContract.coins(1)).balanceOf(getCurveSwapAddr());
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poolSbtcBal = TokenInterface(curveContract.coins(2)).balanceOf(getCurveSwapAddr());
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}
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}
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contract InstaCurveResolver is Resolver {
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string public constant name = "Curve-sBTC-Resolver-v1";
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}
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@ -2,33 +2,10 @@ pragma solidity ^0.6.0;
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pragma experimental ABIEncoderV2;
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interface ICurve {
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function get_virtual_price() external returns (uint256 out);
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function get_virtual_price() external view returns (uint256 out);
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function underlying_coins(int128 tokenId) external view returns (address token);
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function calc_token_amount(uint256[4] calldata amounts, bool deposit) external view returns (uint256 amount);
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function get_dy(int128 sellTokenId, int128 buyTokenId, uint256 sellTokenAmt) external view returns (uint256 buyTokenAmt);
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// Used when there's an underlying token. Example:- cdai, cusdc, etc. If not then
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function get_dy_underlying(int128 sellTokenId, int128 buyTokenId, uint256 sellTokenAmt) external returns (uint256 buyTokenAmt);
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function exchange(int128 sellTokenId, int128 buyTokenId, uint256 sellTokenAmt, uint256 minBuyToken) external;
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// Used when there's an underlying token. Example:- cdai, cusdc, etc.
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function exchange_underlying(int128 sellTokenId, int128 buyTokenId, uint256 sellTokenAmt, uint256 minBuyToken) external;
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function remove_liquidity(uint256 _amount, uint256[4] calldata min_amounts) external;
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function remove_liquidity_imbalance(uint256[4] calldata amounts, uint256 max_burn_amount) external;
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}
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interface ICurveZap {
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function calc_withdraw_one_coin(uint256 _token_amount, int128 i) external returns (uint256 amount);
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function remove_liquidity_one_coin(uint256 _token_amount, int128 i, uint256 min_uamount) external;
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}
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interface TokenInterface {
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@ -64,18 +41,7 @@ contract DSMath {
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}
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contract Helpers is DSMath {
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/**
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* @dev get Ethereum address
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*/
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function getAddressETH() public pure returns (address) {
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return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
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}
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}
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contract CurveHelpers is Helpers {
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contract CurveHelpers is DSMath {
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/**
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* @dev Return Curve Swap Address
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*/
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@ -90,13 +56,6 @@ contract CurveHelpers is Helpers {
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return 0xC25a3A3b969415c80451098fa907EC722572917F;
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}
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/**
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* @dev Return Curve Zap Address
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*/
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function getCurveZapAddr() internal pure returns (address) {
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return 0xFCBa3E75865d2d561BE8D220616520c171F12851;
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}
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function getTokenI(address token) internal pure returns (int128 i) {
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if (token == address(0x6B175474E89094C44Da98b954EedeAC495271d0F)) {
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// DAI Token
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@ -115,16 +74,6 @@ contract CurveHelpers is Helpers {
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}
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}
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function getTokenAddr(ICurve curve, uint256 i) internal view returns (address token) {
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token = curve.underlying_coins(int128(i));
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require(token != address(0), "token-not-found.");
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}
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function getTokenDecimals(address buy, address sell) internal view returns(uint _buyDec, uint _sellDec){
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_buyDec = buy == getAddressETH() ? 18 : TokenInterface(buy).decimals();
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_sellDec = sell == getAddressETH() ? 18 : TokenInterface(sell).decimals();
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}
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function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = mul(_amt, 10 ** (18 - _dec));
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}
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@ -174,23 +123,40 @@ contract CurveHelpers is Helpers {
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contract Resolver is CurveHelpers {
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function getBuyAmount(address buyAddr, address sellAddr, uint sellAmt, uint slippage) public view returns (uint buyAmt, uint unitAmt) {
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buyAmt = ICurve(getCurveSwapAddr()).get_dy(getTokenI(sellAddr), getTokenI(buyAddr), sellAmt);
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function getBuyAmount(address buyAddr, address sellAddr, uint sellAmt, uint slippage)
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public
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view
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returns (uint buyAmt, uint unitAmt, uint virtualPrice)
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{
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ICurve curve = ICurve(getCurveSwapAddr());
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buyAmt = curve.get_dy(getTokenI(sellAddr), getTokenI(buyAddr), sellAmt);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getBuyUnitAmt(buyAddr, sellAddr, sellAmt, buyAmt, slippage);
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}
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function getDepositAmount(address token, uint depositAmt, uint slippage) public view returns (uint curveAmt, uint unitAmt) {
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function getDepositAmount(address token, uint depositAmt, uint slippage)
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public
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view
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returns (uint curveAmt, uint unitAmt, uint virtualPrice)
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{
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uint[4] memory amts;
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amts[uint(getTokenI(token))] = depositAmt;
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curveAmt = ICurve(getCurveSwapAddr()).calc_token_amount(amts, true);
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ICurve curve = ICurve(getCurveSwapAddr());
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curveAmt = curve.calc_token_amount(amts, true);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getDepositUnitAmt(token, depositAmt, curveAmt, slippage);
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}
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function getWithdrawAmount(address token, uint withdrawAmt, uint slippage) public view returns (uint curveAmt, uint unitAmt) {
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function getWithdrawAmount(address token, uint withdrawAmt, uint slippage)
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public
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view
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returns (uint curveAmt, uint unitAmt, uint virtualPrice)
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{
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uint[4] memory amts;
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amts[uint(getTokenI(token))] = withdrawAmt;
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curveAmt = ICurve(getCurveSwapAddr()).calc_token_amount(amts, false);
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ICurve curve = ICurve(getCurveSwapAddr());
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curveAmt = curve.calc_token_amount(amts, false);
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virtualPrice = curve.get_virtual_price();
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unitAmt = getWithdrawtUnitAmt(token, withdrawAmt, curveAmt, slippage);
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}
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@ -199,6 +165,7 @@ contract Resolver is CurveHelpers {
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) public view returns (
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uint userBal,
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uint totalSupply,
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uint virtualPrice,
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uint userShare,
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uint poolDaiBal,
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uint poolUsdcBal,
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@ -210,6 +177,7 @@ contract Resolver is CurveHelpers {
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totalSupply = curveToken.totalSupply();
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userShare = wdiv(userBal, totalSupply);
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ICurve curveContract = ICurve(getCurveSwapAddr());
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virtualPrice = curveContract.get_virtual_price();
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poolDaiBal = TokenInterface(curveContract.underlying_coins(0)).balanceOf(getCurveSwapAddr());
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poolUsdcBal = TokenInterface(curveContract.underlying_coins(1)).balanceOf(getCurveSwapAddr());
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poolUsdtBal = TokenInterface(curveContract.underlying_coins(2)).balanceOf(getCurveSwapAddr());
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@ -219,5 +187,5 @@ contract Resolver is CurveHelpers {
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contract InstaCurveResolver is Resolver {
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string public constant name = "Curve-Resolver-v1";
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string public constant name = "Curve-SUSD-Resolver-v1.1";
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}
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