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check loop lasting number

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This commit is contained in:
Samyak Jain 2019-04-28 02:50:21 +05:30
parent 9b518f1297
commit 11905ba94f
1 changed files with 47 additions and 0 deletions
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47
contracts/ProxyLogics/InstaSave.sol
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@ -219,6 +219,53 @@ contract Helpers is DSMath {
contract Save is Helpers {
function checkFinalPosition(uint cdpID) public view returns (uint finalEthCol, uint finalDaiDebt, uint finalColToUSD, uint timesPossible) {
bytes32 cdpToBytes = bytes32(cdpID);
TubInterface tub = TubInterface(getSaiTubAddress());
uint usdPerEth = uint(oracleInterface(getOracleAddress()).read());
(, uint pethCol, uint daiDebt,) = tub.cups(cdpToBytes);
uint ethCol = rmul(pethCol, tub.per()); // get ETH col from PETH col
(finalEthCol, finalDaiDebt, finalColToUSD, timesPossible) = _checkPositionLoop(
ethCol,
daiDebt,
usdPerEth,
0
);
}
function _checkPositionLoop(
uint ethCol,
uint daiDebt,
uint usdPerEth,
uint runTime
) internal view returns (
uint finalEthCol,
uint finalDaiDebt,
uint finalColToUSD,
uint timesPossible
)
{
uint colToUSD = wmul(ethCol, usdPerEth) - 10;
uint minColNeeded = wmul(daiDebt, 1500000000000000000) + 10;
uint colToFree = wdiv(sub(colToUSD, minColNeeded), usdPerEth);
(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressETH(), getAddressDAI(), colToFree);
uint expectedDAI = wmul(colToFree, expectedRate);
if (expectedDAI < daiDebt) {
uint runTimePlus = add(runTime, 1);
(finalEthCol, finalDaiDebt, finalColToUSD, timesPossible) = _checkPositionLoop(
sub(ethCol, colToFree),
sub(daiDebt, expectedDAI),
usdPerEth,
runTimePlus
);
} else {
finalEthCol = ethCol;
finalDaiDebt = daiDebt;
finalColToUSD = wmul(ethCol, usdPerEth);
timesPossible = runTime;
}
}
function getFinalPosition(uint cdpID, uint runTime) public view returns (uint finalEthCol, uint finalDaiDebt, uint finalColToUSD) {
bytes32 cdpToBytes = bytes32(cdpID);
TubInterface tub = TubInterface(getSaiTubAddress());