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合同元数据
编译器
0.8.20+commit.a1b79de6
语言
Solidity
合同源代码
文件 1 的 1:ERC20Token.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.13;

pragma experimental ABIEncoderV2;

/// @dev Admin of this contract is the address of Timelock.
contract ERC20Token {
  // EIP-20 token name for this token
  string public name;

  // EIP-20 token symbol for this token
  string public symbol;

  // EIP-20 token decimals for this token
  uint8 public constant decimals = 18;

  // Total number of tokens in circulation
  uint public totalSupply;

  address public admin;

  // Allowance amounts on behalf of others
  mapping(address => mapping(address => uint)) internal allowances;

  // Official record of token balances for each account
  mapping(address => uint) internal balances;

  // The standard EIP-20 transfer event
  event Transfer(address indexed from, address indexed to, uint256 amount);

  // The standard EIP-20 approval event
  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 amount
  );

  modifier onlyAdmin() virtual {
    require(msg.sender == admin, "Unauthorized");
    _;
  }

  constructor(address _initAccount, uint _totalSupply ,string memory _name,string memory _symbol) {
    admin = _initAccount;
    name = _name;
    symbol = _symbol;
    totalSupply = _totalSupply;
    balances[_initAccount] = _totalSupply;
    emit Transfer(address(0),_initAccount,_totalSupply);
  }

  function mint(address account, uint amount) external onlyAdmin {
    require(account != address(0), "mint to the zero address");
    totalSupply = totalSupply + amount;
    balances[account] = balances[account] + amount;
    emit Transfer(address(0), account, amount);
  }

  function burn(uint amount) external {
    balances[msg.sender] = balances[msg.sender] - amount;
    totalSupply = totalSupply - amount;
    emit Transfer(msg.sender, address(0), amount);
  }
  /**
   * Get the number of tokens `spender` is approved to spend on behalf of `account`
   * @param account The address of the account holding the funds
   * @param spender The address of the account spending the funds
   * @return The number of tokens approved
   */
  function allowance(
    address account,
    address spender
  ) external view returns (uint) {
    return allowances[account][spender];
  }

  /**
   * Approve `spender` to transfer up to `amount` from `src`
   * @dev This will overwrite the approval amount for `spender`
   *  and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
   * @param spender The address of the account which may transfer tokens
   * @return Whether or not the approval succeeded
   */
  function approve(address spender, uint amount) external returns (bool) {
    allowances[msg.sender][spender] = amount;
    emit Approval(msg.sender, spender, amount);
    return true;
  }

  /**
   * Get the number of tokens held by the `account`
   * @param account The address of the account to get the balance of
   * @return The number of tokens held
   */
  function balanceOf(address account) external view returns (uint) {
    return balances[account];
  }

  /**
   * Transfer `amount` tokens from `msg.sender` to `dst`
   * @param dst The address of the destination account
   * @return Whether or not the transfer succeeded
   */
  function transfer(address dst, uint amount) external returns (bool) {
    _transferTokens(msg.sender, dst, amount);
    return true;
  }

  /**
   * Transfer `amount` tokens from `src` to `dst`
   * @param src The address of the source account
   * @param dst The address of the destination account
   * @return Whether or not the transfer succeeded
   */
  function transferFrom(
    address src,
    address dst,
    uint amount
  ) external returns (bool) {
    address spender = msg.sender;
    uint spenderAllowance = allowances[src][spender];

    if (spender != src && spenderAllowance != type(uint256).max) {
      allowances[src][spender] = spenderAllowance - amount;
      emit Approval(src, spender, allowances[src][spender]);
    }

    _transferTokens(src, dst, amount);
    return true;
  }

  function _transferTokens(address src, address dst, uint amount) internal {
    require(src != address(0), "Zero src address");
    require(dst != address(0), "Zero dst address");

    balances[src] = balances[src] - amount;
    balances[dst] = balances[dst] + amount;
    emit Transfer(src, dst, amount);
  }
}
设置
{
  "compilationTarget": {
    "contracts/ERC20Token.sol": "ERC20Token"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}
ABI
[{"inputs":[{"internalType":"address","name":"_initAccount","type":"address"},{"internalType":"uint256","name":"_totalSupply","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]