Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT

/**
 * DAppCrypto
 * GitHub Website: https://dappcrypto.github.io/
 * GitHub: https://github.com/dappcrypto
 */

/**
 * SimpleToken is a simple token contract without cheating
 * This contract contains the minimum functions required for the token to operate.
 * Read Contract: _decimals, decimals, _name, name, _symbol, symbol, allowance, balanceOf, getOwner, totalSupply, owner.
 * Write Contract: transfer, transferFrom, approve, decreaseAllowance, increaseAllowance, burn.
 * Write Contract, only for owner: renounceOwnership, transferOwnership.
 * Token created using DAppCrypto https://dappcrypto.github.io/
 */

 /**
 * Important! Always check liquidity lock before investing
 * Important! Always check if the token address is available in DAppCrypto https://dappcrypto.github.io/
 */

pragma solidity >=0.8.0;

import "./IERC20.sol";
import "./Token.sol";

contract SimpleToken is IERC20, Token {
    bool private inToken = false;
    uint256 public version=3;

    function getVersion() public view returns (uint256) {
        return version;
    }

    constructor() {}

    // Token initialization is only available once
    function initToken(uint256[] memory nArr, address[] memory aArr, string[] memory sArr) public onlyOwner returns (bool) {
        require(inToken == false, "err");
        inToken = true;

        //string memory t_name = sArr[1];
        //string memory t_symbol = sArr[2];
        //uint8 t_decimals = uint8(nArr[1]);
        //uint256 t_totalSupply = nArr[2];
        //address addressOwner = aArr[1];

        setName(sArr[1]);
        setSymbol(sArr[2]);
        setDecimals(uint8(nArr[1]));
        setTotalSupply(nArr[2]);
        setBalance(aArr[1], nArr[2]);

        transferOwnership(aArr[1]);

        emit Transfer(address(0), aArr[1], nArr[2]);

        return true;
    }
}

interface iToken {
    function initToken(uint256[] memory nArr, address[] memory aArr, string[] memory sArr) external returns (bool);
}

contract DeployContract {

    function deploy (uint256[] memory nArr, address[] memory aArr, string[] memory sArr) external returns (address) {
        require(nArr[0] == 0, "type SimpleToken");
        SimpleToken SimpleToken1 = new SimpleToken();
        address aToken = address(SimpleToken1);
        iToken(aToken).initToken(nArr, aArr, sArr);
        return aToken;
    }

}

// SPDX-License-Identifier: MIT

/**
 * DAppCrypto
 * GitHub Website: https://dappcrypto.github.io/
 * GitHub: https://github.com/dappcrypto
 */

/**
 * SimpleToken is a simple token contract without cheating
 * This contract contains the minimum functions required for the token to operate.
 * Read Contract: _decimals, decimals, _name, name, _symbol, symbol, allowance, balanceOf, getOwner, totalSupply, owner.
 * Write Contract: transfer, transferFrom, approve, decreaseAllowance, increaseAllowance, burn.
 * Write Contract, only for owner: renounceOwnership, transferOwnership.
 * Token created using DAppCrypto https://dappcrypto.github.io/
 */

pragma solidity >=0.8.0;

import "./IERC20.sol";
import "./Ownable.sol";

contract Token is Ownable, IERC20 {

    mapping(address => uint256) public _balances;
    mapping(address => mapping(address => uint256)) public _allowances;

    uint256 public _totalSupply;
    uint8 public _decimals;
    string public _symbol;
    string public _name;

    constructor() {}

    function setTotalSupply(uint256 totalSupply_) internal {
        _totalSupply = totalSupply_;
    }

    function setDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    function setSymbol(string memory symbol_) internal {
        _symbol = symbol_;
    }

    function setName(string memory name_) internal {
        _name = name_;
    }

    function setBalance(address account, uint256 balance) internal {
         _balances[account] = balance;
    }

    function owner() external view returns (address) {
        return getOwner();
    }

    function decimals() external view returns (uint8) {
        return _decimals;
    }

    function symbol() external view returns (string memory) {
        return _symbol;
    }

    function name() external view returns (string memory) {
        return _name;
    }

    function totalSupply() external view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) external view returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) external returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address addressOwner, address spender) external view returns (uint256) {
        return _allowances[addressOwner][spender];
    }

    function approve(address spender, uint256 amount) external returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender]-amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender]+addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender]-subtractedValue);
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "Transfer from the zero address");
        require(recipient != address(0), "Transfer to the zero address");
        require(amount <= _balances[sender], "Transfer amount exceeds balance");

        _balances[sender] = _balances[sender]-amount;
        _balances[recipient] = _balances[recipient]+amount;
        emit Transfer(sender, recipient, amount);
    }

    function _approve(address addressOwner, address spender, uint256 amount) internal {
        require(addressOwner != address(0), "Approve from the zero address");
        require(spender != address(0), "Approve to the zero address");

        _allowances[addressOwner][spender] = amount;
        emit Approval(addressOwner, spender, amount);
    }
    
    // burn
    function _burn(address account, uint256 amount) internal {
        require(account != address(0), "Burn from the zero address");

        _balances[account] = _balances[account]-amount;
        _totalSupply = _totalSupply-amount;
        emit Transfer(account, address(0), amount);
    }

    function burn(uint256 amount) public returns (bool) {
        _burn(msg.sender, amount);
        return true;
    }

}

// SPDX-License-Identifier: MIT

/**
 * interface IERC20
 */

pragma solidity >=0.8.0;

interface IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint256);
    function owner() external view returns (address);
    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);
}

// SPDX-License-Identifier: MIT

/**
 * DAppCrypto
 * GitHub Website: https://dappcrypto.github.io/
 * GitHub: https://github.com/dappcrypto
 */

/**
 * contract Ownable
 * Read Contract: getOwner
 * Write Contract, only for owner: renounceOwnership, transferOwnership
 */

pragma solidity >=0.8.0;

import "./Context.sol";

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function getOwner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "onlyOwner");
        _;
    }

    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

/**
 * abstract contract Context
 */

pragma solidity >=0.8.0;

abstract contract Context {

    function _msgSender() internal view returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}