在区块链领域,DeFi已成为最火热的应用之一,而DAPP、IDO、代币预售等也是不可忽视的重要领域。这些应用背后都离不开
质押挖矿,因为这是DeFi生态的核心和基础,为代币经济模型的实现提供了强有力的支撑。下面我们将介绍如何通过智能合
约实现代币的质押挖矿功能。
代币合约的设计
首先,我们需要设计一个代币合约,代币合约的代码如下所示:
Copy code
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract MyToken is ERC20 {【更全面的开发源码搭建可V or TG我昵称】
constructor() ERC20("MyToken", "MTK") {
_mint(msg.sender, 1000000000000000000000000);
}
}
这个合约继承了OpenZeppelin中的ERC20合约,它代表了一个名为"MyToken",简称为"MTK"的代币合约。我们在构造函数
中初始化了总量为1,000,000个MTK,它们都属于合约的部署者。
接下来,我们需要设计一个质押挖矿的智能合约,它将代币的质押和挖矿逻辑联系在一起。智能合约的代码如下所示:
scssCopycodepragmasolidity^0.8.0;
import"./MyToken.sol";
contractStakingPool{
MyTokenprivate_token;
structStake{
addressstaker;
uint256amount;
}
Stake[]private_stakes;
mapping(address=>uint256)private_balances;
constructor(MyTokentoken){
_token=token;
}
functionstake(uint256amount)public{
require(amount>0,"Amountmustbegreaterthanzero");
require(_token.transferFrom(msg.sender,address(this),amount),"Transferfailed");
_stakes.push(Stake(msg.sender,amount));
_balances[msg.sender]+=amount;
}
functionunstake(uint256index)public{
require(index<_stakes.length,"Indexoutofrange");
require(_stakes[index].staker==msg.sender,"Unauthorized");【更全面的开发源码搭建可V or TG我昵称】
uint256amount=_stakes[index].amount;
_stakes[index]=_stakes[_stakes.length-1];
_stakes.pop();require(_token.transfer(msg.sender,amount),"Transferfailed");
_balances[msg.sender]-=amount;
}
functionbalanceOf(addressaccount)publicviewreturns(uint256){
return_balances[account];
}
functiontotalStaked()publicviewreturns(uint256){
uint256total=0;
for(uint256i=0;i<_stakes.length;i++){
total+=_stakes[i].amount;
}
returntotal;