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check loop lasting number
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@ -219,6 +219,53 @@ contract Helpers is DSMath {
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contract Save is Helpers {
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contract Save is Helpers {
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function checkFinalPosition(uint cdpID) public view returns (uint finalEthCol, uint finalDaiDebt, uint finalColToUSD, uint timesPossible) {
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bytes32 cdpToBytes = bytes32(cdpID);
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TubInterface tub = TubInterface(getSaiTubAddress());
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uint usdPerEth = uint(oracleInterface(getOracleAddress()).read());
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(, uint pethCol, uint daiDebt,) = tub.cups(cdpToBytes);
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uint ethCol = rmul(pethCol, tub.per()); // get ETH col from PETH col
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(finalEthCol, finalDaiDebt, finalColToUSD, timesPossible) = _checkPositionLoop(
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ethCol,
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daiDebt,
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usdPerEth,
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0
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);
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}
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function _checkPositionLoop(
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uint ethCol,
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uint daiDebt,
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uint usdPerEth,
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uint runTime
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) internal view returns (
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uint finalEthCol,
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uint finalDaiDebt,
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uint finalColToUSD,
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uint timesPossible
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)
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{
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uint colToUSD = wmul(ethCol, usdPerEth) - 10;
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uint minColNeeded = wmul(daiDebt, 1500000000000000000) + 10;
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uint colToFree = wdiv(sub(colToUSD, minColNeeded), usdPerEth);
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(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressETH(), getAddressDAI(), colToFree);
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uint expectedDAI = wmul(colToFree, expectedRate);
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if (expectedDAI < daiDebt) {
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uint runTimePlus = add(runTime, 1);
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(finalEthCol, finalDaiDebt, finalColToUSD, timesPossible) = _checkPositionLoop(
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sub(ethCol, colToFree),
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sub(daiDebt, expectedDAI),
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usdPerEth,
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runTimePlus
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);
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} else {
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finalEthCol = ethCol;
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finalDaiDebt = daiDebt;
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finalColToUSD = wmul(ethCol, usdPerEth);
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timesPossible = runTime;
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}
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}
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function getFinalPosition(uint cdpID, uint runTime) public view returns (uint finalEthCol, uint finalDaiDebt, uint finalColToUSD) {
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function getFinalPosition(uint cdpID, uint runTime) public view returns (uint finalEthCol, uint finalDaiDebt, uint finalColToUSD) {
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bytes32 cdpToBytes = bytes32(cdpID);
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bytes32 cdpToBytes = bytes32(cdpID);
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TubInterface tub = TubInterface(getSaiTubAddress());
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TubInterface tub = TubInterface(getSaiTubAddress());
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