Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• interface IERC20
•    - function transfer(address to, uint256 ...
•    - function transferFrom(address from, a ...
•    - function approve(address spender, uin ...
•    - function balanceOf(address target)
•    - function allowance(address target, ad ...
• library SafeMath
•    - function add(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b, st ...
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b, st ...
•    - function mod(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b, st ...
•  contract WithCoffeeToken is IERC20 *
•    - function transfer(address to, uint256 ...
•    - function transferFrom(address from, a ...
•    - function approve(address spender, uin ...
•    - function balanceOf(address target)
•    - function allowance(address target, ad ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2020-03-09
*/

// File: contracts/Library/IERC20.sol

pragma solidity ^0.5.11;


interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(address from, address to, uint256 value)
        external
        returns (bool);

    function approve(address spender, uint256 value) external returns (bool);

    function balanceOf(address target) external view returns (uint256);

    function allowance(address target, address spender)
        external
        view
        returns (uint256);
}

// File: contracts/Library/SafeMath.sol

pragma solidity ^0.5.11;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     *
     * _Available since v2.4.0._
     */
    function sub(uint256 a, uint256 b, string memory errorMessage)
        internal
        pure
        returns (uint256)
    {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function div(uint256 a, uint256 b, string memory errorMessage)
        internal
        pure
        returns (uint256)
    {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     *
     * _Available since v2.4.0._
     */
    function mod(uint256 a, uint256 b, string memory errorMessage)
        internal
        pure
        returns (uint256)
    {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// File: contracts/WithCoffeeToken.sol

pragma solidity ^0.5.11;




contract WithCoffeeToken is IERC20 {
    using SafeMath for uint256;
    mapping(address => uint256) private balances;
    mapping(address => mapping(address => uint256)) allowances;

    string public constant name = "With ☕️";
    string public constant symbol = "With ☕️";
    uint8 public constant decimals = 18;
    uint256 public constant totalSupply = 165e18;

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

    function transfer(address to, uint256 value) external returns (bool) {
        balances[msg.sender] = balances[msg.sender].sub(
            value,
            "With ☕️/Not-Enough-Balance"
        );
        balances[to] = balances[to].add(value);

        emit Transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(address from, address to, uint256 value)
        external
        returns (bool)
    {
        allowances[from][msg.sender] = allowances[from][msg.sender].sub(
            value,
            "With ☕️/Not-Enough-Allowance"
        );
        balances[from] = balances[from].sub(
            value,
            "With ☕️/Not-Enough-Balance"
        );
        balances[to] = balances[to].add(value);

        emit Transfer(from, to, value);
        return true;
    }

    function approve(address spender, uint256 value) external returns (bool) {
        allowances[msg.sender][spender] = value;

        emit Approval(msg.sender, spender, value);
        return true;
    }

    function balanceOf(address target) external view returns (uint256) {
        return balances[target];
    }

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

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

6429:1835:0:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;6429:1835:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6622:43;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;8:100:-1;33:3;30:1;27:10;8:100;;;90:11;;;84:18;71:11;;;64:39;52:2;45:10;8:100;;;12:14;6622:43:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;7760:207;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;;;;;7760:207:0;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;6766:44;;;:::i;:::-;;;;;;;;;;;;;;;;7242:510;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;;;;;7242:510:0;;;;;;;;;;;;;;;;;:::i;6724:35::-;;;:::i;:::-;;;;;;;;;;;;;;;;;;;7975:109;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;7975:109:0;-1:-1:-1;;;;;7975:109:0;;:::i;6901:333::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;;;;;6901:333:0;;;;;;;;:::i;8092:169::-;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;-1:-1;;;;;;8092:169:0;;;;;;;;;;:::i;6622:43::-;;;;;;;;;;;;;;;;;;;:::o;7760:207::-;7855:10;7827:4;7844:22;;;:10;:22;;;;;;;;-1:-1:-1;;;;;7844:31:0;;;;;;;;;;;:39;;;7901:36;;;;;;;7827:4;;7844:31;;7855:10;;7901:36;;;;;;;;-1:-1:-1;7955:4:0;7760:207;;;;:::o;6766:44::-;6804:6;6766:44;:::o;7242:510::-;7394:112;;;;;;;;;;;;;;;;;-1:-1:-1;;;;;7394:16:0;;7341:4;7394:16;;;:10;:16;;;;;7411:10;7394:28;;;;;;;;;:112;;7441:5;;7394:112;:32;:112;:::i;:::-;-1:-1:-1;;;;;7363:16:0;;;;;;:10;:16;;;;;;;;7380:10;7363:28;;;;;;;:143;;;;7534:96;;;;;;;;;;;;;;;:14;;;;;;;;;;;:96;;7567:5;;7534:96;:18;:96;:::i;:::-;-1:-1:-1;;;;;7517:14:0;;;:8;:14;;;;;;;;;;;:113;;;;7656:12;;;;;;;:23;;7673:5;7656:23;:16;:23;:::i;:::-;-1:-1:-1;;;;;7641:12:0;;;:8;:12;;;;;;;;;;;;:38;;;;7697:25;;;;;;;7641:12;;7697:25;;;;;;;;;;;;;-1:-1:-1;7740:4:0;7242:510;;;;;:::o;6724:35::-;6757:2;6724:35;:::o;7975:109::-;-1:-1:-1;;;;;8060:16:0;8033:7;8060:16;;;;;;;;;;;;7975:109::o;6901:333::-;7004:102;;;;;;;;;;;;;;;;;;;;7013:10;6964:4;7004:20;;;;;;;;;;;:102;;7043:5;;7004:102;:24;:102;:::i;:::-;6990:10;6981:8;:20;;;;;;;;;;;:125;;;;-1:-1:-1;;;;;7132:12:0;;;;;;:23;;7149:5;7132:23;:16;:23;:::i;:::-;-1:-1:-1;;;;;7117:12:0;;:8;:12;;;;;;;;;;;;:38;;;;7173:31;;;;;;;7117:12;;7182:10;;7173:31;;;;;;;;;;-1:-1:-1;7222:4:0;6901:333;;;;:::o;8092:169::-;-1:-1:-1;;;;;8226:18:0;;;8194:7;8226:18;;;:10;:18;;;;;;;;:27;;;;;;;;;;;;;8092:169::o;2589:224::-;2702:7;2743:12;2735:6;;;;2727:29;;;;-1:-1:-1;;;2727:29:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;90:11;;;84:18;71:11;;;64:39;52:2;45:10;8:100;;;12:14;2727:29:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;;2779:5:0;;;2589:224::o;1660:181::-;1718:7;1750:5;;;1774:6;;;;1766:46;;;;;-1:-1:-1;;;1766:46:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;1832:1;1660:181;-1:-1:-1;;;1660:181:0:o

bzzr://a156b42ab0d5ed7af86e748a9e95ab5ceb7a50c73ae92269a9cbe6e3eb6c007f