102 lines
2.7 KiB
Solidity
102 lines
2.7 KiB
Solidity
/*
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Copyright 2020 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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pragma experimental ABIEncoderV2;
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import {ReentrancyGuard} from "../../lib/ReentrancyGuard.sol";
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import {SafeMath} from "../../lib/SafeMath.sol";
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import {DODOMath} from "../../lib/DODOMath.sol";
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import {DecimalMath} from "../../lib/DecimalMath.sol";
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import {IFeeRateModel} from "../../lib/FeeRateModel.sol";
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import {IERC20} from "../../intf/IERC20.sol";
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import {PMMPricing} from "../../lib/PMMPricing.sol";
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contract DVMStorage is ReentrancyGuard {
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using SafeMath for uint256;
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bool public _IS_OPEN_TWAP_ = false;
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// ============ Core Address ============
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address public _MAINTAINER_;
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IERC20 public _BASE_TOKEN_;
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IERC20 public _QUOTE_TOKEN_;
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uint112 public _BASE_RESERVE_;
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uint112 public _QUOTE_RESERVE_;
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uint32 public _BLOCK_TIMESTAMP_LAST_;
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uint256 public _BASE_PRICE_CUMULATIVE_LAST_;
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// ============ Shares (ERC20) ============
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string public symbol;
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uint8 public decimals;
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string public name;
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uint256 public totalSupply;
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mapping(address => uint256) internal _SHARES_;
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mapping(address => mapping(address => uint256)) internal _ALLOWED_;
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// ================= Permit ======================
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bytes32 public DOMAIN_SEPARATOR;
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// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
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bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
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mapping(address => uint256) public nonces;
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// ============ Variables for Pricing ============
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uint256 public _LP_FEE_RATE_;
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IFeeRateModel public _MT_FEE_RATE_MODEL_;
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uint256 public _K_;
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uint256 public _I_;
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// ============ Helper Functions ============
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function getPMMState() public view returns (PMMPricing.PMMState memory state) {
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state.i = _I_;
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state.K = _K_;
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state.B = _BASE_RESERVE_;
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state.Q = _QUOTE_RESERVE_;
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state.B0 = 0; // will be calculated in adjustedTarget
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state.Q0 = 0;
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state.R = PMMPricing.RState.ABOVE_ONE;
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PMMPricing.adjustedTarget(state);
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}
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function getPMMStateForCall()
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external
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view
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returns (
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uint256 i,
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uint256 K,
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uint256 B,
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uint256 Q,
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uint256 B0,
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uint256 Q0,
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uint256 R
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)
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{
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PMMPricing.PMMState memory state = getPMMState();
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i = state.i;
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K = state.K;
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B = state.B;
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Q = state.Q;
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B0 = state.B0;
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Q0 = state.Q0;
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R = uint256(state.R);
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}
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function getMidPrice() public view returns (uint256 midPrice) {
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return PMMPricing.getMidPrice(getPMMState());
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}
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}
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