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contracts/impl/Storage.sol

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+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+import {Ownable} from "../lib/Ownable.sol";
+import {SafeMath} from "../lib/SafeMath.sol";
+import {DecimalMath} from "../lib/DecimalMath.sol";
+import {ReentrancyGuard} from "../lib/ReentrancyGuard.sol";
+import {IOracle} from "../intf/IOracle.sol";
+import {IDODOLpToken} from "../intf/IDODOLpToken.sol";
+import {Types} from "../lib/Types.sol";
+
+/**
+ * @title Storage
+ * @author DODO Breeder
+ *
+ * @notice Local Variables
+ */
+contract Storage is Ownable, ReentrancyGuard {
+    using SafeMath for uint256;
+
+    // ============ Variables for Control ============
+
+    bool internal _INITIALIZED_;
+    bool public _CLOSED_;
+    bool public _DEPOSIT_QUOTE_ALLOWED_;
+    bool public _DEPOSIT_BASE_ALLOWED_;
+    bool public _TRADE_ALLOWED_;
+    uint256 public _GAS_PRICE_LIMIT_;
+
+    // ============ Core Address ============
+
+    address public _SUPERVISOR_; // could freeze system in emergency
+    address public _MAINTAINER_; // collect maintainer fee to buy food for DODO
+
+    address public _BASE_TOKEN_;
+    address public _QUOTE_TOKEN_;
+    address public _ORACLE_;
+
+    // ============ Variables for PMM Algorithm ============
+
+    uint256 public _LP_FEE_RATE_;
+    uint256 public _MT_FEE_RATE_;
+    uint256 public _K_;
+
+    Types.RStatus public _R_STATUS_;
+    uint256 public _TARGET_BASE_TOKEN_AMOUNT_;
+    uint256 public _TARGET_QUOTE_TOKEN_AMOUNT_;
+    uint256 public _BASE_BALANCE_;
+    uint256 public _QUOTE_BALANCE_;
+
+    address public _BASE_CAPITAL_TOKEN_;
+    address public _QUOTE_CAPITAL_TOKEN_;
+
+    // ============ Variables for Final Settlement ============
+
+    uint256 public _BASE_CAPITAL_RECEIVE_QUOTE_;
+    uint256 public _QUOTE_CAPITAL_RECEIVE_BASE_;
+    mapping(address => bool) public _CLAIMED_;
+
+    // ============ Modifiers ============
+
+    modifier onlySupervisorOrOwner() {
+        require(msg.sender == _SUPERVISOR_ || msg.sender == _OWNER_, "NOT_SUPERVISOR_OR_OWNER");
+        _;
+    }
+
+    modifier notClosed() {
+        require(!_CLOSED_, "DODO_IS_CLOSED");
+        _;
+    }
+
+    // ============ Helper Functions ============
+
+    function _checkDODOParameters() internal view returns (uint256) {
+        require(_K_ < DecimalMath.ONE, "K_MUST_BE_LESS_THAN_ONE");
+        require(_K_ > 0, "K_MUST_BE_GREATER_THAN_ZERO");
+        require(_LP_FEE_RATE_.add(_MT_FEE_RATE_) < DecimalMath.ONE, "FEE_MUST_BE_LESS_THAN_ONE");
+    }
+
+    function getOraclePrice() public view returns (uint256) {
+        return IOracle(_ORACLE_).getPrice();
+    }
+
+    function getBaseCapitalBalanceOf(address lp) public view returns (uint256) {
+        return IDODOLpToken(_BASE_CAPITAL_TOKEN_).balanceOf(lp);
+    }
+
+    function getTotalBaseCapital() public view returns (uint256) {
+        return IDODOLpToken(_BASE_CAPITAL_TOKEN_).totalSupply();
+    }
+
+    function getQuoteCapitalBalanceOf(address lp) public view returns (uint256) {
+        return IDODOLpToken(_QUOTE_CAPITAL_TOKEN_).balanceOf(lp);
+    }
+
+    function getTotalQuoteCapital() public view returns (uint256) {
+        return IDODOLpToken(_QUOTE_CAPITAL_TOKEN_).totalSupply();
+    }
+}