PancakeSwap交易所农场质押DeFi开发合约源代码详情

以下是一个简单的PancakeSwap交易所农场质押DeFi合约代码示例，使用Solidity语言编写：

```// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/ERC165/ERC165.sol"; 【更全面的开发源码搭建可看我昵称】

import "@pancakeswap/contracts/token/BSC Token.sol";
import "@pancakeswap/contracts/utils/Proxy.sol";
import "@pancakeswap/contracts/utils/Owned.sol";
import "@pancakeswap/contracts/utils/Pausable.sol";

contract Farm {
using ERC165 for address;
using Owned for address;
using Pausable for address;

address public manager;  
address public proxy;  
uint256 public tokenCollateralization;  
uint256 public tokenCollateralizationPenalty;  
uint256 public interestRate;  
uint256 public interestRatePenalty;  
uint256 public maxCollateral;  
uint256 public maxCollateralPenalty;  
uint256 public collateralizationThreshold;  
uint256 public collateralizationPenalty;  
uint256 public daysToWithdrawal;  
uint256 public penaltyWindow;  
bool public isPaused;  【更全面的开发源码搭建可看我昵称】
mapping (address) public farmers;  
mapping (address) public collateral;  
mapping (address) public rewards;  
mapping (address) public withdrawals;  
mapping (address) public unpaidRewards;  
mapping (address) public debt;  

constructor(address _manager, address _proxy, uint256 _tokenCollateralization, uint256 _tokenCollateralizationPenalty, uint256 _interestRate, uint256 _interestRatePenalty, uint256 _maxCollateral, uint256 _maxCollateralPenalty, uint256 _collateralizationThreshold, uint256 _collateralizationPenalty, uint256 _daysToWithdrawal, uint256 _penaltyWindow) {  
    manager = _manager;  
    proxy = _proxy;  
    tokenCollateralization = _tokenCollateralization;  
    tokenCollateralizationPenalty = _tokenCollateralizationPenalty;  
    interestRate = _interestRate;  
    interestRatePenalty = _interestRatePenalty;  
    maxCollateral = _maxCollateral;  
    maxCollateralPenalty = _maxCollateralPenalty;  
    collateralizationThreshold = _collateralizationThreshold;  
    collateralizationPenalty = _collateralizationPenalty;  
    daysToWithdrawal = _daysToWithdrawal;  
    penaltyWindow = _penaltyWindow;  
    isPaused = false;  
}  

function becomeFarmer(address farmer) public returns (bool) {  
    if (isPaused) { return false; }  
    if (farmer == address(0)) { return false; }  
    if (farmer in farmers) { return false; }  
    if (farmer in debt.keys) { return false; }  
    farmerers[farmer] = true;  
    collateral[farmer] = 0;  
    rewards[farmer] = 0;  
    withdrawals[farmer] = 0;  
    unpaidRewards[farmer] = 0;  
    debt[farmer] = 0;  
    emit FarmerBecame(farmer);  
    return true;  
}  

```