编译时不显示令牌信息

问题描述

我正在使用下面的代码创建一个智能合约，它接收 BNB 并将合约创建的代币发送回去。

我正在使用 Remix，并选择要编译的 DEX 合约。

但是，当我这样做时，令牌信息不会出现在 BscScan 上。

示例：https://testnet.bscscan.com/token/0xb570E6Fff85CBE695c9394bDa7d55fb38a009A28

而且我也无法将它添加到我的钱包中，它说令牌代码无法识别它。

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

interface IERC20 {

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function allowance(address owner,address spender) external view returns (uint256);

    function transfer(address recipient,uint256 amount) external returns (bool);
    function approve(address spender,uint256 amount) external returns (bool);
    function transferFrom(address sender,address recipient,uint256 amount) external returns (bool);


    event Transfer(address indexed from,address indexed to,uint256 value);
    event Approval(address indexed owner,address indexed spender,uint256 value);

}


contract ERC20Basic is IERC20{

    string public constant name = "ByeSeel";
    string public constant symbol = "BYS";
    uint8 public constant decimals = 18;


//event Approval(address indexed tokeNowner,uint tokens);
//event Transfer(address indexed from,uint tokens);


mapping(address => uint256) balances;

mapping(address => mapping (address => uint256)) allowed;

uint256 totalSupply_ = 10000000 * 10 ** 18;

using SafeMath for uint256;

constructor() {
    balances[msg.sender] = totalSupply_;
}

function totalSupply() public override view returns (uint256) {
    return totalSupply_;
}

function balanceOf(address tokeNowner) public override view returns (uint256) {
    return balances[tokeNowner];
}

function transfer(address receiver,uint256 numTokens) public override returns (bool) {
    require(numTokens <= balances[msg.sender]);
    balances[msg.sender] = balances[msg.sender].sub(numTokens);
    balances[receiver] = balances[receiver].add(numTokens);
    emit Transfer(msg.sender,receiver,numTokens);
    return true;
}

function approve(address delegate,uint256 numTokens) public override returns (bool) {
    allowed[msg.sender][delegate] = numTokens;
    emit Approval(msg.sender,delegate,numTokens);
    return true;
}

function allowance(address owner,address delegate) public override view returns (uint) {
return allowed[owner][delegate];
}

function transferFrom(address owner,address buyer,uint256 numTokens) public override returns (bool) {
require(numTokens <= balances[owner]);
require(numTokens <= allowed[owner][msg.sender]);

balances[owner] = balances[owner].sub(numTokens);
allowed[owner][msg.sender] = allowed[owner][msg.sender].sub(numTokens);
balances[buyer] = balances[buyer].add(numTokens);
emit Transfer(owner,buyer,numTokens);
return true;
}

event Received(address,uint);
 receive() external payable {
 emit Received(msg.sender,msg.value);
}

}

library SafeMath {
function sub(uint256 a,uint256 b) internal pure returns (uint256) {
  assert(b <= a);
  return a - b;
}

function add(uint256 a,uint256 b) internal pure returns (uint256) {
   uint256 c = a + b;
   assert(c >= a);
   return c;
} }

contract DEX {

    event Bought(uint256 amount);
    event Sold(uint256 amount);


    IERC20 public token;

    constructor() {
        token = new ERC20Basic();
    }

    function buy() payable public {
        uint256 amountTobuy = msg.value;
        uint256 dexBalance = token.balanceOf(address(this));
        require(amountTobuy > 0,"You need to send some Ether");
        require(amountTobuy <= dexBalance,"Not enough tokens in the reserve");
        token.transfer(msg.sender,amountTobuy);
        emit Bought(amountTobuy);
    }

    function sell(uint256 amount) public {
        require(amount > 0,"You need to sell at least some tokens");
        uint256 allowance = token.allowance(msg.sender,address(this));
        require(allowance >= amount,"Check the token allowance");
        token.transferFrom(msg.sender,address(this),amount);
        payable(msg.sender).transfer(amount);
        emit Sold(amount);
    }

    receive() external payable {
    buy();
    }

}

解决方法

问题是 DEX 合约没有扩展到 ERC20Basic 合约 所以我不得不这样做： 合约 DEX 是 ERC20Basic 这样就解决了，但是我的买卖合同还是有问题。