simplify dpp

contracts/DODOPrivatePool/impl/DPP.sol

@@ -9,8 +9,6 @@ pragma solidity 0.6.9;
 pragma experimental ABIEncoderV2;
 
 import {IFeeRateModel} from "../../lib/FeeRateModel.sol";
-import {IPermissionManager} from "../../lib/PermissionManager.sol";
-import {IExternalValue} from "../../lib/ExternalValue.sol";
 import {IERC20} from "../../intf/IERC20.sol";
 import {DPPTrader} from "./DPPTrader.sol";
 
@@ -20,12 +18,10 @@ contract DPP is DPPTrader {
         address maintainer,
         address baseTokenAddress,
         address quoteTokenAddress,
-        address lpFeeRateModel,
+        uint256 lpFeeRate,
         address mtFeeRateModel,
-        address kSource,
+        uint256 k,
-        address iSource,
+        uint256 i
-        address gasPriceSource,
-        address tradePermissionManager
     ) external {
         initOwner(owner);
 
@@ -33,16 +29,16 @@ contract DPP is DPPTrader {
         _BASE_TOKEN_ = IERC20(baseTokenAddress);
         _QUOTE_TOKEN_ = IERC20(quoteTokenAddress);
 
-        _LP_FEE_RATE_MODEL_ = IFeeRateModel(lpFeeRateModel);
-        _MT_FEE_RATE_MODEL_ = IFeeRateModel(mtFeeRateModel);
-        _I_ = IExternalValue(iSource);
-        _K_ = IExternalValue(kSource);
-        _GAS_PRICE_LIMIT_ = IExternalValue(gasPriceSource);
-        _TRADE_PERMISSION_ = IPermissionManager(tradePermissionManager);
         _MAINTAINER_ = maintainer;
+        _MT_FEE_RATE_MODEL_ = IFeeRateModel(mtFeeRateModel);
         
+        require(lpFeeRate <= 1e18, "LP_FEE_RATE_OUT_OF_RANGE");
+        require(k <= 1e18, "K_OUT_OF_RANGE");
+        require(i > 0 && i <= 1e36, "I_OUT_OF_RANGE");
+        _LP_FEE_RATE_ = uint64(lpFeeRate);
+        _K_ = uint64(k);
+        _I_ = uint128(i);
         _resetTargetAndReserve();
-        _checkIK();
     }
 
     // ============ Version Control ============

contracts/DODOPrivatePool/impl/DPPAdmin.sol

@@ -49,42 +49,6 @@ contract DPPAdmin is InitializableOwnable {
         _OPERATOR_ = newOperator;
     }
 
-    // function setLpFeeRateModel(address newLpFeeRateModel) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setLpFeeRateModel(newLpFeeRateModel);
-    // }
-
-    // function setMtFeeRateModel(address newMtFeeRateModel) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setMtFeeRateModel(newMtFeeRateModel);
-    // }
-
-    // function setTradePermissionManager(address newTradePermissionManager) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setTradePermissionManager(newTradePermissionManager);
-    // }
-
-    function setMaintainer(address newMaintainer) external notFreezed onlyOwner {
-        IDPP(_DPP_).setMaintainer(newMaintainer);
-    }
-
-    // function setGasPriceSource(address newGasPriceLimitSource) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setGasPriceSource(newGasPriceLimitSource);
-    // }
-
-    // function setISource(address newISource) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setISource(newISource);
-    // }
-
-    // function setKSource(address newKSource) external notFreezed onlyOwner {
-    //     IDPP(_DPP_).setKSource(newKSource);
-    // }
-
-    function setBuy(bool open) external notFreezed onlyOwner {
-        IDPP(_DPP_).setBuy(open);
-    }
-
-    function setSell(bool open) external notFreezed onlyOwner {
-        IDPP(_DPP_).setSell(open);
-    }
-
     function retrieve(
         address payable to,
         address token,
@@ -96,7 +60,6 @@ contract DPPAdmin is InitializableOwnable {
     function reset(
         address operator,
         uint256 newLpFeeRate,
-        uint256 newMtFeeRate,
         uint256 newI,
         uint256 newK,
         uint256 baseOutAmount,
@@ -114,7 +77,6 @@ contract DPPAdmin is InitializableOwnable {
             IDPP(_DPP_).reset(
                 msg.sender,
                 newLpFeeRate,
-                newMtFeeRate,
                 newI,
                 newK,
                 baseOutAmount,

contracts/DODOPrivatePool/impl/DPPStorage.sol

@@ -12,8 +12,6 @@ import {InitializableOwnable} from "../../lib/InitializableOwnable.sol";
 import {SafeMath} from "../../lib/SafeMath.sol";
 import {DecimalMath} from "../../lib/DecimalMath.sol";
 import {ReentrancyGuard} from "../../lib/ReentrancyGuard.sol";
-import {IPermissionManager} from "../../lib/PermissionManager.sol";
-import {IExternalValue} from "../../lib/ExternalValue.sol";
 import {IFeeRateModel} from "../../lib/FeeRateModel.sol";
 import {IERC20} from "../../intf/IERC20.sol";
 import {PMMPricing} from "../../lib/PMMPricing.sol";
@@ -27,14 +25,6 @@ import {PMMPricing} from "../../lib/PMMPricing.sol";
 contract DPPStorage is InitializableOwnable, ReentrancyGuard {
     using SafeMath for uint256;
 
-    // ============ Advanced Controls ============
-
-    bool public _BUYING_CLOSE_;
-    bool public _SELLING_CLOSE_;
-
-    IPermissionManager public _TRADE_PERMISSION_;
-    IExternalValue public _GAS_PRICE_LIMIT_;
-
     // ============ Core Address ============
 
     address public _MAINTAINER_;
@@ -42,92 +32,18 @@ contract DPPStorage is InitializableOwnable, ReentrancyGuard {
     IERC20 public _BASE_TOKEN_;
     IERC20 public _QUOTE_TOKEN_;
 
-    uint256 public _BASE_RESERVE_;
+    uint128 public _BASE_RESERVE_;
-    uint256 public _QUOTE_RESERVE_;
+    uint128 public _QUOTE_RESERVE_;
-    uint256 public _BASE_TARGET_;
+
-    uint256 public _QUOTE_TARGET_;
+    uint120 public _BASE_TARGET_;
-    PMMPricing.RState public _RState_;
+    uint120 public _QUOTE_TARGET_;
+    uint16 public _RState_;
 
     // ============ Variables for Pricing ============
 
-    IFeeRateModel public _LP_FEE_RATE_MODEL_;
     IFeeRateModel public _MT_FEE_RATE_MODEL_;
-    IExternalValue public _K_;
-    IExternalValue public _I_;
     
-    // ============ Events ============
+    uint64 public _LP_FEE_RATE_;
-
+    uint64 public _K_;
-    event SetLpFeeRateModel(address oldAddr, address newAddr);
+    uint128 public _I_;
-
-    event SetMtFeeRateModel(address oldAddr, address newAddr);
-
-    event SetTradePermissionManager(address oldAddr, address newAddr);
-
-    event SetMaintainer(address oldAddr, address newAddr);
-
-    event SetGasPriceSource(address oldAddr, address newAddr);
-
-    event SetISource(address oldAddr, address newAddr);
-
-    event SetKSource(address oldAddr, address newAddr);
-
-    event SetBuy(bool allow);
-
-    event SetSell(bool allow);
-
-    // ============ Setting Functions ============
-
-    function setLpFeeRateModel(address newLpFeeRateModel) external onlyOwner {
-        emit SetLpFeeRateModel(address(_LP_FEE_RATE_MODEL_), newLpFeeRateModel);
-        _LP_FEE_RATE_MODEL_ = IFeeRateModel(newLpFeeRateModel);
-    }
-
-    function setMtFeeRateModel(address newMtFeeRateModel) external onlyOwner {
-        emit SetMtFeeRateModel(address(_MT_FEE_RATE_MODEL_), newMtFeeRateModel);
-        _MT_FEE_RATE_MODEL_ = IFeeRateModel(newMtFeeRateModel);
-    }
-
-    function setTradePermissionManager(address newTradePermissionManager) external onlyOwner {
-        emit SetTradePermissionManager(address(_TRADE_PERMISSION_), newTradePermissionManager);
-        _TRADE_PERMISSION_ = IPermissionManager(newTradePermissionManager);
-    }
-
-    function setMaintainer(address newMaintainer) external onlyOwner {
-        emit SetMaintainer(address(_MAINTAINER_), newMaintainer);
-        _MAINTAINER_ = newMaintainer;
-    }
-
-    function setGasPriceSource(address newGasPriceLimitSource) external onlyOwner {
-        emit SetGasPriceSource(address(_GAS_PRICE_LIMIT_), newGasPriceLimitSource);
-        _GAS_PRICE_LIMIT_ = IExternalValue(newGasPriceLimitSource);
-    }
-
-    function setISource(address newISource) external onlyOwner {
-        emit SetISource(address(_I_), newISource);
-        _I_ = IExternalValue(newISource);
-        _checkIK();
-    }
-
-    function setKSource(address newKSource) external onlyOwner {
-        emit SetKSource(address(_K_), newKSource);
-        _K_ = IExternalValue(newKSource);
-        _checkIK();
-    }
-
-    function setBuy(bool open) external onlyOwner {
-        emit SetBuy(open);
-        _BUYING_CLOSE_ = !open;
-    }
-
-    function setSell(bool open) external onlyOwner {
-        emit SetSell(open);
-        _SELLING_CLOSE_ = !open;
-    }
-
-    function _checkIK() internal view {
-        uint256 k = _K_.get();
-        uint256 i = _I_.get();
-        require(k <= 1e18, "K_OUT_OF_RANGE");
-        require(i > 0 && i <= 1e36, "I_OUT_OF_RANGE");
-    }
 }

contracts/DODOPrivatePool/impl/DPPTrader.sol

@@ -36,36 +36,15 @@ contract DPPTrader is DPPVault {
 
     event RChange(PMMPricing.RState newRState);
 
-    // ============ Modifiers ============
-
-    modifier isBuyAllow(address trader) {
-        require(!_BUYING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(trader), "TRADER_BUY_NOT_ALLOWED");
-        _;
-    }
-
-    modifier isSellAllow(address trader) {
-        require(
-            !_SELLING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(trader),
-            "TRADER_SELL_NOT_ALLOWED"
-        );
-        _;
-    }
-
-    modifier limitGasPrice() {
-        require(tx.gasprice <= _GAS_PRICE_LIMIT_.get(), "GAS_PRICE_EXCEED");
-        _;
-    }
-
     // ============ Trade Functions ============
 
     function sellBase(address to)
         external
         preventReentrant
-        limitGasPrice
-        isSellAllow(to) // set DVM address in trade permission
         returns (uint256 receiveQuoteAmount)
     {
-        uint256 baseInput = getBaseInput();
+        uint256 baseBalance = _BASE_TOKEN_.balanceOf(address(this));
+        uint256 baseInput = baseBalance.sub(uint256(_BASE_RESERVE_));
         uint256 mtFee;
         uint256 newBaseTarget;
         PMMPricing.RState newRState;
@@ -73,12 +52,13 @@ contract DPPTrader is DPPVault {
 
         _transferQuoteOut(to, receiveQuoteAmount);
         _transferQuoteOut(_MAINTAINER_, mtFee);
-        _sync();
+        _setReserve(baseBalance, _QUOTE_TOKEN_.balanceOf(address(this)));
 
         // update TARGET
-        if (_RState_ != newRState) {
+        if (_RState_ != uint16(newRState)) {
-            _RState_ = newRState;
+            _RState_ = uint16(newRState);
-            _BASE_TARGET_ = newBaseTarget;
+            require(newBaseTarget <= uint120(-1),"OVERFLOW");
+            _BASE_TARGET_ = uint120(newBaseTarget);
             emit RChange(newRState);
         }
 
@@ -94,14 +74,12 @@ contract DPPTrader is DPPVault {
     function sellQuote(address to)
         external
         preventReentrant
-        limitGasPrice
-        isBuyAllow(to)
         returns (uint256 receiveBaseAmount)
     {
-        uint256 quoteInput = getQuoteInput();
+        uint256 quoteBalance = _QUOTE_TOKEN_.balanceOf(address(this));
+        uint256 quoteInput = quoteBalance.sub(uint256(_QUOTE_RESERVE_));
         uint256 mtFee;
         uint256 newQuoteTarget;
-
         PMMPricing.RState newRState;
         (receiveBaseAmount, mtFee, newRState, newQuoteTarget) = querySellQuote(
             tx.origin,
@@ -110,12 +88,13 @@ contract DPPTrader is DPPVault {
 
         _transferBaseOut(to, receiveBaseAmount);
         _transferBaseOut(_MAINTAINER_, mtFee);
-        _sync();
+         _setReserve(_BASE_TOKEN_.balanceOf(address(this)), quoteBalance);
 
         // update TARGET
-        if (_RState_ != newRState) {
+        if (_RState_ != uint16(newRState)) {
-            _RState_ = newRState;
+            _RState_ = uint16(newRState);
-            _QUOTE_TARGET_ = newQuoteTarget;
+            require(newQuoteTarget <= uint120(-1),"OVERFLOW");
+            _QUOTE_TARGET_ = uint120(newQuoteTarget);
             emit RChange(newRState);
         }
 
@@ -133,7 +112,7 @@ contract DPPTrader is DPPVault {
         uint256 quoteAmount,
         address assetTo,
         bytes calldata data
-    ) external preventReentrant isSellAllow(assetTo) isBuyAllow(assetTo) {
+    ) external preventReentrant {
         _transferBaseOut(assetTo, baseAmount);
         _transferQuoteOut(assetTo, quoteAmount);
 
@@ -152,19 +131,20 @@ contract DPPTrader is DPPVault {
         // sell quote case
         // quote input + base output
         if (baseBalance < _BASE_RESERVE_) {
-            uint256 quoteInput = quoteBalance.sub(_QUOTE_RESERVE_);
+            uint256 quoteInput = quoteBalance.sub(uint256(_QUOTE_RESERVE_));
             (
                 uint256 receiveBaseAmount,
                 uint256 mtFee,
                 PMMPricing.RState newRState,
                 uint256 newQuoteTarget
             ) = querySellQuote(tx.origin, quoteInput); // revert if quoteBalance<quoteReserve
-            require(_BASE_RESERVE_.sub(baseBalance) <= receiveBaseAmount, "FLASH_LOAN_FAILED");
+            require(uint256(_BASE_RESERVE_).sub(baseBalance) <= receiveBaseAmount, "FLASH_LOAN_FAILED");
 
             _transferBaseOut(_MAINTAINER_, mtFee);
-            if (_RState_ != newRState) {
+            if (_RState_ != uint16(newRState)) {
-                _RState_ = newRState;
+                _RState_ = uint16(newRState);
-                _QUOTE_TARGET_ = newQuoteTarget;
+                require(newQuoteTarget <= uint120(-1),"OVERFLOW");
+                _QUOTE_TARGET_ = uint120(newQuoteTarget);
                 emit RChange(newRState);
             }
             emit DODOSwap(
@@ -179,19 +159,20 @@ contract DPPTrader is DPPVault {
         // sell base case
         // base input + quote output
         if (quoteBalance < _QUOTE_RESERVE_) {
-            uint256 baseInput = baseBalance.sub(_BASE_RESERVE_);
+            uint256 baseInput = baseBalance.sub(uint256(_BASE_RESERVE_));
             (
                 uint256 receiveQuoteAmount,
                 uint256 mtFee,
                 PMMPricing.RState newRState,
                 uint256 newBaseTarget
             ) = querySellBase(tx.origin, baseInput); // revert if baseBalance<baseReserve
-            require(_QUOTE_RESERVE_.sub(quoteBalance) <= receiveQuoteAmount, "FLASH_LOAN_FAILED");
+            require(uint256(_QUOTE_RESERVE_).sub(quoteBalance) <= receiveQuoteAmount, "FLASH_LOAN_FAILED");
 
             _transferQuoteOut(_MAINTAINER_, mtFee);
-            if (_RState_ != newRState) {
+            if (_RState_ != uint16(newRState)) {
-                _RState_ = newRState;
+                _RState_ = uint16(newRState);
-                _BASE_TARGET_ = newBaseTarget;
+                require(newBaseTarget <= uint120(-1),"OVERFLOW");
+                _BASE_TARGET_ = uint120(newBaseTarget);
                 emit RChange(newRState);
             }
             emit DODOSwap(
@@ -223,7 +204,7 @@ contract DPPTrader is DPPVault {
         PMMPricing.PMMState memory state = getPMMState();
         (receiveQuoteAmount, newRState) = PMMPricing.sellBaseToken(state, payBaseAmount);
 
-        uint256 lpFeeRate = _LP_FEE_RATE_MODEL_.getFeeRate(trader);
+        uint256 lpFeeRate = _LP_FEE_RATE_;
         uint256 mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(trader);
         mtFee = DecimalMath.mulFloor(receiveQuoteAmount, mtFeeRate);
         receiveQuoteAmount = receiveQuoteAmount
@@ -245,7 +226,7 @@ contract DPPTrader is DPPVault {
         PMMPricing.PMMState memory state = getPMMState();
         (receiveBaseAmount, newRState) = PMMPricing.sellQuoteToken(state, payQuoteAmount);
 
-        uint256 lpFeeRate = _LP_FEE_RATE_MODEL_.getFeeRate(trader);
+        uint256 lpFeeRate = _LP_FEE_RATE_;
         uint256 mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(trader);
         mtFee = DecimalMath.mulFloor(receiveBaseAmount, mtFeeRate);
         receiveBaseAmount = receiveBaseAmount
@@ -257,13 +238,13 @@ contract DPPTrader is DPPVault {
     // ============ Helper Functions ============
 
     function getPMMState() public view returns (PMMPricing.PMMState memory state) {
-        state.i = _I_.get();
+        state.i = _I_;
-        state.K = _K_.get();
+        state.K = _K_;
         state.B = _BASE_RESERVE_;
         state.Q = _QUOTE_RESERVE_;
         state.B0 = _BASE_TARGET_;
         state.Q0 = _QUOTE_TARGET_;
-        state.R = _RState_;
+        state.R = PMMPricing.RState(_RState_);
         PMMPricing.adjustedTarget(state);
     }
 
@@ -277,7 +258,7 @@ contract DPPTrader is DPPVault {
             uint256 Q,
             uint256 B0,
             uint256 Q0,
-            uint8 R
+            uint256 R
         )
     {
         PMMPricing.PMMState memory state = getPMMState();
@@ -287,21 +268,10 @@ contract DPPTrader is DPPVault {
         Q = state.Q;
         B0 = state.B0;
         Q0 = state.Q0;
-        R = uint8(state.R);
+        R = uint256(state.R);
     }
 
     function getMidPrice() public view returns (uint256 midPrice) {
         return PMMPricing.getMidPrice(getPMMState());
     }
-
-    function _sync() internal {
-        uint256 baseBalance = _BASE_TOKEN_.balanceOf(address(this));
-        uint256 quoteBalance = _QUOTE_TOKEN_.balanceOf(address(this));
-        if (baseBalance != _BASE_RESERVE_) {
-            _BASE_RESERVE_ = baseBalance;
-        }
-        if (quoteBalance != _QUOTE_RESERVE_) {
-            _QUOTE_RESERVE_ = quoteBalance;
-        }
-    }
 }

contracts/DODOPrivatePool/impl/DPPVault.sol

@@ -23,7 +23,7 @@ contract DPPVault is DPPStorage {
 
     // ============ Events ============
 
-    event Reset(uint256 newLpFeeRate, uint256 newMtFeeRate);
+    event LpFeeRateChange(uint256 newLpFeeRate);
 
     // ============ View Functions ============
 
@@ -37,19 +37,10 @@ contract DPPVault is DPPStorage {
         view
         returns (uint256 lpFeeRate, uint256 mtFeeRate)
     {
-        lpFeeRate = _LP_FEE_RATE_MODEL_.getFeeRate(user);
+        lpFeeRate = _LP_FEE_RATE_;
         mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(user);
     }
 
-    function getUserTradePermission(address user)
-        external
-        view
-        returns (bool isBuyAllow, bool isSellAllow)
-    {
-        isBuyAllow = (!_BUYING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(user));
-        isSellAllow = (!_SELLING_CLOSE_ && _TRADE_PERMISSION_.isAllowed(user));
-    }
-
     // ============ Get Input ============
 
     function getBaseInput() public view returns (uint256 input) {
@@ -60,39 +51,80 @@ contract DPPVault is DPPStorage {
         return _QUOTE_TOKEN_.balanceOf(address(this)).sub(_QUOTE_RESERVE_);
     }
 
-    // ============ Set States ============
+    // ============ Set Status ============
+
+    function _setReserve(uint256 baseReserve, uint256 quoteReserve) internal {
+        require(baseReserve <= uint120(-1) && quoteReserve <= uint120(-1), "OVERFLOW");
+        _BASE_RESERVE_ = uint128(baseReserve);
+        _QUOTE_RESERVE_ = uint128(quoteReserve);
+    }
+
+    function _sync() internal {
+        uint256 baseBalance = _BASE_TOKEN_.balanceOf(address(this));
+        uint256 quoteBalance = _QUOTE_TOKEN_.balanceOf(address(this));
+        
+        require(baseBalance <= uint120(-1) && quoteBalance <= uint120(-1), "OVERFLOW");
+
+        if (baseBalance != _BASE_RESERVE_) {
+            _BASE_RESERVE_ = uint128(baseBalance);
+        }
+        if (quoteBalance != _QUOTE_RESERVE_) {
+            _QUOTE_RESERVE_ = uint128(quoteBalance);
+        }
+    }
+
+    function _resetTargetAndReserve() internal {
+        uint256 baseBalance = _BASE_TOKEN_.balanceOf(address(this));
+        uint256 quoteBalance = _QUOTE_TOKEN_.balanceOf(address(this));
+
+        require(baseBalance <= uint120(-1) && quoteBalance <= uint120(-1), "OVERFLOW");
+        
+        _BASE_RESERVE_ = uint128(baseBalance);
+        _QUOTE_RESERVE_ = uint128(quoteBalance);
+        _BASE_TARGET_ = uint120(baseBalance);
+        _QUOTE_TARGET_ = uint120(quoteBalance);
+        _setRState();
+    }
+
+    function _setRState() internal {
+        if (_BASE_RESERVE_ == _BASE_TARGET_ && _QUOTE_RESERVE_ == _QUOTE_TARGET_) {
+            _RState_ = uint16(PMMPricing.RState.ONE);
+        } else if (_BASE_RESERVE_ > _BASE_TARGET_ && _QUOTE_RESERVE_ < _QUOTE_TARGET_) {
+            _RState_ = uint16(PMMPricing.RState.BELOW_ONE);
+        } else if (_BASE_RESERVE_ < _BASE_TARGET_ && _QUOTE_RESERVE_ > _QUOTE_TARGET_) {
+            _RState_ = uint16(PMMPricing.RState.ABOVE_ONE);
+        } else {
+            require(false, "R_STATE_WRONG");
+        }
+    }
+
 
     function ratioSync() external preventReentrant onlyOwner {
         uint256 baseBalance = _BASE_TOKEN_.balanceOf(address(this));
         uint256 quoteBalance = _QUOTE_TOKEN_.balanceOf(address(this));
+
+        require(baseBalance <= uint120(-1) && quoteBalance <= uint120(-1), "OVERFLOW");
+
         if (baseBalance != _BASE_RESERVE_) {
-            _BASE_TARGET_ = _BASE_TARGET_.mul(baseBalance).div(_BASE_RESERVE_);
+            _BASE_TARGET_ = uint120(uint256(_BASE_TARGET_).mul(baseBalance).div(uint256(_BASE_RESERVE_)));
-            _BASE_RESERVE_ = baseBalance;
+            _BASE_RESERVE_ = uint128(baseBalance);
         }
         if (quoteBalance != _QUOTE_RESERVE_) {
-            _QUOTE_TARGET_ = _QUOTE_TARGET_.mul(quoteBalance).div(_QUOTE_RESERVE_);
+            _QUOTE_TARGET_ = uint120(uint256(_QUOTE_TARGET_).mul(quoteBalance).div(uint256(_QUOTE_RESERVE_)));
-            _QUOTE_RESERVE_ = quoteBalance;
+            _QUOTE_RESERVE_ = uint128(quoteBalance);
         }
     }
 
     function setTarget(uint256 baseTarget, uint256 quoteTarget) public preventReentrant onlyOwner {
-        _BASE_TARGET_ = baseTarget;
+        require(baseTarget <= uint120(-1) && quoteTarget <= uint120(-1), "OVERFLOW");
-        _QUOTE_TARGET_ = quoteTarget;
+        _BASE_TARGET_ = uint120(baseTarget);
-        _setRState();
+        _QUOTE_TARGET_ = uint120(quoteTarget);
-    }
-
-    function _resetTargetAndReserve() internal {
-        _BASE_TARGET_ = _BASE_TOKEN_.balanceOf(address(this));
-        _QUOTE_TARGET_ = _QUOTE_TOKEN_.balanceOf(address(this));
-        _BASE_RESERVE_ = _BASE_TARGET_;
-        _QUOTE_RESERVE_ = _QUOTE_TARGET_;
         _setRState();
     }
 
     function reset(
         address assetTo,
         uint256 newLpFeeRate,
-        uint256 newMtFeeRate,
         uint256 newI,
         uint256 newK,
         uint256 baseOutAmount,
@@ -104,30 +136,19 @@ contract DPPVault is DPPStorage {
             _BASE_RESERVE_ >= minBaseReserve && _QUOTE_RESERVE_ >= minQuoteReserve,
             "RESERVE_AMOUNT_IS_NOT_ENOUGH"
         );
-        _LP_FEE_RATE_MODEL_.setFeeRate(newLpFeeRate);
+        require(newLpFeeRate <= 1e18, "LP_FEE_RATE_OUT_OF_RANGE");
-        _MT_FEE_RATE_MODEL_.setFeeRate(newMtFeeRate);
+        require(newK <= 1e18, "K_OUT_OF_RANGE");
-        _I_.set(newI);
+        require(newI > 0 && newI <= 1e36, "I_OUT_OF_RANGE");
-        _K_.set(newK);
+        _LP_FEE_RATE_ = uint64(newLpFeeRate);
+        _K_ = uint64(newK);
+        _I_ = uint128(newI);
         _transferBaseOut(assetTo, baseOutAmount);
         _transferQuoteOut(assetTo, quoteOutAmount);
         _resetTargetAndReserve();
-        _checkIK();
+        emit LpFeeRateChange(newLpFeeRate);
-        emit Reset(newLpFeeRate, newMtFeeRate);
         return true;
     }
 
-    function _setRState() internal {
-        if (_BASE_RESERVE_ == _BASE_TARGET_ && _QUOTE_RESERVE_ == _QUOTE_TARGET_) {
-            _RState_ = PMMPricing.RState.ONE;
-        } else if (_BASE_RESERVE_ > _BASE_TARGET_ && _QUOTE_RESERVE_ < _QUOTE_TARGET_) {
-            _RState_ = PMMPricing.RState.BELOW_ONE;
-        } else if (_BASE_RESERVE_ < _BASE_TARGET_ && _QUOTE_RESERVE_ > _QUOTE_TARGET_) {
-            _RState_ = PMMPricing.RState.ABOVE_ONE;
-        } else {
-            require(false, "R_STATE_WRONG");
-        }
-    }
-
     // ============ Asset Out ============
 
     function _transferBaseOut(address to, uint256 amount) internal {

contracts/DODOPrivatePool/intf/IDPP.sol

@@ -14,37 +14,15 @@ interface IDPP {
         address maintainer,
         address baseTokenAddress,
         address quoteTokenAddress,
-        address lpFeeRateModel,
+        uint256 lpFeeRate,
         address mtFeeRateModel,
-        address kSource,
+        uint256 k,
-        address iSource,
+        uint256 i
-        address gasPriceSource,
-        address tradePermissionManager
     ) external;
 
-    function _LP_FEE_RATE_MODEL_() external returns (address);
-
     function _MT_FEE_RATE_MODEL_() external returns (address);
 
     //=========== admin ==========
-    function setLpFeeRateModel(address newLpFeeRateModel) external;
-
-    function setMtFeeRateModel(address newMtFeeRateModel) external;
-
-    function setTradePermissionManager(address newTradePermissionManager) external;
-
-    function setMaintainer(address newMaintainer) external;
-
-    function setGasPriceSource(address newGasPriceLimitSource) external;
-
-    function setISource(address newISource) external;
-
-    function setKSource(address newKSource) external;
-
-    function setBuy(bool open) external;
-
-    function setSell(bool open) external;
-
     function ratioSync() external;
 
     //==============================
@@ -58,7 +36,6 @@ interface IDPP {
     function reset(
         address assetTo,
         uint256 newLpFeeRate,
-        uint256 newMtFeeRate,
         uint256 newI,
         uint256 newK,
         uint256 baseOutAmount,

contracts/DODOVendingMachine/impl/DVMTrader.sol

@@ -150,10 +150,11 @@ contract DVMTrader is DVMVault {
     {
         (receiveQuoteAmount, ) = PMMPricing.sellBaseToken(getPMMState(), payBaseAmount);
 
+        uint256 lpFeeRate = _LP_FEE_RATE_;
         uint256 mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(trader);
         mtFee = DecimalMath.mulFloor(receiveQuoteAmount, mtFeeRate);
         receiveQuoteAmount = receiveQuoteAmount
-            .sub(DecimalMath.mulFloor(receiveQuoteAmount, _LP_FEE_RATE_))
+            .sub(DecimalMath.mulFloor(receiveQuoteAmount, lpFeeRate))
             .sub(mtFee);
     }
 
@@ -164,10 +165,11 @@ contract DVMTrader is DVMVault {
     {
         (receiveBaseAmount, ) = PMMPricing.sellQuoteToken(getPMMState(), payQuoteAmount);
 
+        uint256 lpFeeRate = _LP_FEE_RATE_;
         uint256 mtFeeRate = _MT_FEE_RATE_MODEL_.getFeeRate(trader);
         mtFee = DecimalMath.mulFloor(receiveBaseAmount, mtFeeRate);
         receiveBaseAmount = receiveBaseAmount
-            .sub(DecimalMath.mulFloor(receiveBaseAmount, _LP_FEE_RATE_))
+            .sub(DecimalMath.mulFloor(receiveBaseAmount, lpFeeRate))
             .sub(mtFee);
     }
 
@@ -194,7 +196,7 @@ contract DVMTrader is DVMVault {
             uint256 Q,
             uint256 B0,
             uint256 Q0,
-            uint8 R
+            uint256 R
         )
     {
         PMMPricing.PMMState memory state = getPMMState();
@@ -204,7 +206,7 @@ contract DVMTrader is DVMVault {
         Q = state.Q;
         B0 = state.B0;
         Q0 = state.Q0;
-        R = uint8(state.R);
+        R = uint256(state.R);
     }
 
     function getMidPrice() public view returns (uint256 midPrice) {

contracts/Factory/DPPFactory.sol

@@ -11,21 +11,17 @@ pragma experimental ABIEncoderV2;
 import {InitializableOwnable} from "../lib/InitializableOwnable.sol";
 import {ICloneFactory} from "../lib/CloneFactory.sol";
 import {IFeeRateModel} from "../lib/FeeRateModel.sol";
-import {IExternalValue} from "../lib/ExternalValue.sol";
 import {IDPP} from "../DODOPrivatePool/intf/IDPP.sol";
 import {IDPPAdmin} from "../DODOPrivatePool/intf/IDPPAdmin.sol";
-import {IPermissionManager} from "../lib/PermissionManager.sol";
 
 contract DPPFactory is InitializableOwnable {
     // ============ Templates ============
 
     address public immutable _CLONE_FACTORY_;
     address public immutable _DPP_TEMPLATE_;
-    address public immutable _FEE_RATE_MODEL_TEMPLATE_;
+    address public immutable _DEFAULT_MAINTAINER_;
-    address public immutable _PERMISSION_MANAGER_TEMPLATE_;
+    address public immutable _DEFAULT_MT_FEE_RATE_MODEL_;
-    address public immutable _DEFAULT_GAS_PRICE_SOURCE_;
+    address public immutable _DODO_APPROVE_;
-    address public immutable _VALUE_SOURCE_;
-    address public immutable _DODO_SMART_APPROVE_;
     address public _DPP_ADMIN_TEMPLATE_;
 
     // ============ Registry ============
@@ -53,20 +49,16 @@ contract DPPFactory is InitializableOwnable {
         address cloneFactory,
         address dppTemplate,
         address dppAdminTemplate,
-        address defautFeeRateModelTemplate,
+        address defaultMaintainer,
-        address defaultPermissionManagerTemplate,
+        address defaultMtFeeRateModel,
-        address defaultExternalValueTemplate,
+        address dodoApprove
-        address defaultGasPriceSource,
-        address dodoSmartApprove
     ) public {
         _CLONE_FACTORY_ = cloneFactory;
         _DPP_TEMPLATE_ = dppTemplate;
         _DPP_ADMIN_TEMPLATE_ = dppAdminTemplate;
-        _DODO_SMART_APPROVE_ = dodoSmartApprove;
+        _DEFAULT_MAINTAINER_ = defaultMaintainer;
-        _FEE_RATE_MODEL_TEMPLATE_ = defautFeeRateModelTemplate;
+        _DEFAULT_MT_FEE_RATE_MODEL_ = defaultMtFeeRateModel;
-        _PERMISSION_MANAGER_TEMPLATE_ = defaultPermissionManagerTemplate;
+        _DODO_APPROVE_ = dodoApprove;
-        _VALUE_SOURCE_ = defaultExternalValueTemplate;
-        _DEFAULT_GAS_PRICE_SOURCE_ = defaultGasPriceSource;
     }
 
     function createDODOPrivatePool() external returns (address newPrivatePool) {
@@ -79,7 +71,6 @@ contract DPPFactory is InitializableOwnable {
         address baseToken,
         address quoteToken,
         uint256 lpFeeRate,
-        uint256 mtFeeRate,
         uint256 k,
         uint256 i
     ) external {
@@ -89,19 +80,17 @@ contract DPPFactory is InitializableOwnable {
                 creator,
                 _dppAddress,
                 creator,
-                _DODO_SMART_APPROVE_
+                _DODO_APPROVE_
             );
             IDPP(_dppAddress).init(
                 adminModel,
-                creator,
+                _DEFAULT_MAINTAINER_,
                 baseToken,
                 quoteToken,
-                _createFeeRateModel(_dppAddress, lpFeeRate),
+                lpFeeRate,
-                _createFeeRateModel(_dppAddress, mtFeeRate),
+                _DEFAULT_MT_FEE_RATE_MODEL_,
-                _createExternalValueModel(_dppAddress, k),
+                k,
-                _createExternalValueModel(_dppAddress, i),
+                i
-                _DEFAULT_GAS_PRICE_SOURCE_,
-                _createPermissionManager(adminModel)
             );
         }
 
@@ -110,35 +99,14 @@ contract DPPFactory is InitializableOwnable {
         emit NewDPP(baseToken, quoteToken, creator, dppAddress);
     }
 
-    function _createFeeRateModel(address owner, uint256 feeRate)
-        internal
-        returns (address feeRateModel)
-    {
-        feeRateModel = ICloneFactory(_CLONE_FACTORY_).clone(_FEE_RATE_MODEL_TEMPLATE_);
-        IFeeRateModel(feeRateModel).init(owner, feeRate);
-    }
-
-    function _createPermissionManager(address owner) internal returns (address permissionManager) {
-        permissionManager = ICloneFactory(_CLONE_FACTORY_).clone(_PERMISSION_MANAGER_TEMPLATE_);
-        IPermissionManager(permissionManager).initOwner(owner);
-    }
-
-    function _createExternalValueModel(address owner, uint256 value)
-        internal
-        returns (address valueModel)
-    {
-        valueModel = ICloneFactory(_CLONE_FACTORY_).clone(_VALUE_SOURCE_);
-        IExternalValue(valueModel).init(owner, value);
-    }
-
     function _createDPPAdminModel(
         address owner,
         address dpp,
         address operator,
-        address dodoSmartApprove
+        address dodoApprove
     ) internal returns (address adminModel) {
         adminModel = ICloneFactory(_CLONE_FACTORY_).clone(_DPP_ADMIN_TEMPLATE_);
-        IDPPAdmin(adminModel).init(owner, dpp, operator, dodoSmartApprove);
+        IDPPAdmin(adminModel).init(owner, dpp, operator, dodoApprove);
     }
 
     // ============ Admin Operation Functions ============

contracts/SmartRoute/DODOV2Proxy01.sol

@@ -213,7 +213,6 @@ contract DODOV2Proxy01 is IDODOV2Proxy01, ReentrancyGuard, InitializableOwnable
         uint256 baseInAmount,
         uint256 quoteInAmount,
         uint256 lpFeeRate,
-        uint256 mtFeeRate,
         uint256 i,
         uint256 k,
         uint256 deadLine
@@ -247,7 +246,6 @@ contract DODOV2Proxy01 is IDODOV2Proxy01, ReentrancyGuard, InitializableOwnable
             _baseToken,
             _quoteToken,
             lpFeeRate,
-            mtFeeRate,
             k,
             i
         );
@@ -255,7 +253,7 @@ contract DODOV2Proxy01 is IDODOV2Proxy01, ReentrancyGuard, InitializableOwnable
 
     function resetDODOPrivatePool(
         address dppAddress,
-        uint256[] memory paramList,  //0 - newLpFeeRate, 1 - newMtFeeRate, 2 - newI, 3 - newK
+        uint256[] memory paramList,  //0 - newLpFeeRate, 1 - newI, 2 - newK
         uint256[] memory amountList, //0 - baseInAmount, 1 - quoteInAmount, 2 - baseOutAmount, 3- quoteOutAmount
         uint8 flag, // 0 - ERC20, 1 - baseInETH, 2 - quoteInETH, 3 - baseOutETH, 4 - quoteOutETH
         uint256 minBaseReserve,
@@ -282,7 +280,6 @@ contract DODOV2Proxy01 is IDODOV2Proxy01, ReentrancyGuard, InitializableOwnable
             paramList[0],
             paramList[1],
             paramList[2],
-            paramList[3],
             amountList[2],
             amountList[3],
             minBaseReserve,

contracts/SmartRoute/helper/DODOV2RouteHelper.sol

@@ -21,7 +21,7 @@ contract DODOV2RouteHelper {
         uint256 Q;
         uint256 B0;
         uint256 Q0;
-        uint8 R;
+        uint256 R;
         uint256 lpFeeRate;
         uint256 mtFeeRate;
         address baseToken;
@@ -60,19 +60,17 @@ contract DODOV2RouteHelper {
                 curRes.quoteToken = token0;
             }
 
-            if(!IDODOV2(cur)._BUYING_CLOSE_() && !IDODOV2(cur)._SELLING_CLOSE_()){
+            (            
-                (            
+                curRes.i,
-                    curRes.i,
+                curRes.K,
-                    curRes.K,
+                curRes.B,
-                    curRes.B,
+                curRes.Q,
-                    curRes.Q,
+                curRes.B0,
-                    curRes.B0,
+                curRes.Q0,
-                    curRes.Q0,
+                curRes.R
-                    curRes.R
+            ) = IDODOV2(cur).getPMMStateForCall();
-                ) = IDODOV2(cur).getPMMStateForCall();
 
-                (curRes.lpFeeRate, curRes.mtFeeRate) = IDODOV2(cur).getUserFeeRate(userAddr);
+            (curRes.lpFeeRate, curRes.mtFeeRate) = IDODOV2(cur).getUserFeeRate(userAddr);
-            }
             curRes.curPair = cur;
             res[i] = curRes;
         }

contracts/SmartRoute/intf/IDODOV2.sol

@@ -22,12 +22,6 @@ interface IDODOV2 {
 
     function _QUOTE_TOKEN_() external view returns (address);
 
-    function _BUYING_CLOSE_() external view returns (bool);
-
-    function _SELLING_CLOSE_() external view returns (bool);
-
-    function _OWNER_() external returns (address);
-
     function getPMMStateForCall() external view returns (
             uint256 i,
             uint256 K,
@@ -35,7 +29,7 @@ interface IDODOV2 {
             uint256 Q,
             uint256 B0,
             uint256 Q0,
-            uint8 R
+            uint256 R
     );
 
     function getUserFeeRate(address user) external view returns (uint256 lpFeeRate, uint256 mtFeeRate);
@@ -64,7 +58,6 @@ interface IDODOV2 {
         address baseToken,
         address quoteToken,
         uint256 lpFeeRate,
-        uint256 mtFeeRate,
         uint256 k,
         uint256 i
     ) external;
@@ -72,7 +65,6 @@ interface IDODOV2 {
     function reset(
         address operator,
         uint256 newLpFeeRate,
-        uint256 newMtFeeRate,
         uint256 newI,
         uint256 newK,
         uint256 baseOutAmount,
@@ -83,6 +75,8 @@ interface IDODOV2 {
 
     function getPrivatePoolBidirection(address token0, address token1) external view returns (address[] memory baseToken0Pool, address[] memory baseToken1Pool);
 
+    function _OWNER_() external returns (address);
+    
     //========== CrowdPooling ===========
 
     function createCrowdPooling() external returns (address payable newCrowdPooling);

contracts/SmartRoute/intf/IDODOV2Proxy01.sol

@@ -77,7 +77,6 @@ interface IDODOV2Proxy01 is IDODOV1Proxy01 {
         uint256 baseInAmount,
         uint256 quoteInAmount,
         uint256 lpFeeRate,
-        uint256 mtFeeRate,
         uint256 i,
         uint256 k,
         uint256 deadLine
@@ -85,7 +84,7 @@ interface IDODOV2Proxy01 is IDODOV1Proxy01 {
 
     function resetDODOPrivatePool(
         address dppAddress,
-        uint256[] memory paramList,  //0 - newLpFeeRate, 1 - newMtFeeRate, 2 - newI, 3 - newK
+        uint256[] memory paramList,  //0 - newLpFeeRate, 1 - newI, 2 - newK
         uint256[] memory amountList, //0 - baseInAmount, 1 - quoteInAmount, 2 - baseOutAmount, 3 - quoteOutAmount
         uint8 flag, // 0 - ERC20, 1 - baseInETH, 2 - quoteInETH, 3 - baseOutETH, 4 - quoteOutETH
         uint256 minBaseReserve,