Contract Diff Checker

Contract Name:
CoinToken

Contract Source Code:

File 1 of 1 : CoinToken

pragma solidity ^0.4.24;
  library SafeMath {
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
      if (a == 0) {
        return 0;
      }
      uint256 c = a * b;
      assert(c / a == b);
      return c;
    }
  
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
      // assert(b > 0); // Solidity automatically throws when dividing by 0
      uint256 c = a / b;
      // assert(a == b * c + a % b); // There is no case in which this doesn't hold
      return c;
    }
  
    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 Ownable {
    address public owner;
  
  
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
      require(msg.sender == owner);
      _;
    }
  
  
    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferOwnership(address newOwner) public onlyOwner {
      require(newOwner != address(0));
      emit OwnershipTransferred(owner, newOwner);
      owner = newOwner;
    }
  
  }
  
  contract Pausable is Ownable {
    event Pause();
    event Unpause();
  
    bool public paused = false;
  
  
    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     */
    modifier whenNotPaused() {
      require(!paused);
      _;
    }
  
    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     */
    modifier whenPaused() {
      require(paused);
      _;
    }
  
    /**
     * @dev called by the owner to pause, triggers stopped state
     */
    function pause() onlyOwner whenNotPaused public {
      paused = true;
      emit Pause();
    }
  
    /**
     * @dev called by the owner to unpause, returns to normal state
     */
    function unpause() onlyOwner whenPaused public {
      paused = false;
      emit Unpause();
    }
  }
  
  contract ERC20Basic {
    uint256 public totalSupply;
    function balanceOf(address who) public view returns (uint256);
    function transfer(address to, uint256 value) public returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
  }
  
  contract ERC20 is ERC20Basic {
    function allowance(address owner, address spender) public view returns (uint256);
    function transferFrom(address from, address to, uint256 value) public returns (bool);
    function approve(address spender, uint256 value) public returns (bool);
    event Approval(address indexed owner, address indexed spender, uint256 value);
  }
  
  
  contract StandardToken is ERC20 {
    using SafeMath for uint256;
  
    mapping (address => mapping (address => uint256)) internal allowed;
    mapping(address => bool) tokenBlacklist;
    event Blacklist(address indexed blackListed, bool value);
  
  
    mapping(address => uint256) balances;
  
  
    function transfer(address _to, uint256 _value) public returns (bool) {
      require(tokenBlacklist[msg.sender] == false);
      require(_to != address(0));
      require(_value <= balances[msg.sender]);
  
      // SafeMath.sub will throw if there is not enough balance.
      balances[msg.sender] = balances[msg.sender].sub(_value);
      balances[_to] = balances[_to].add(_value);
      emit Transfer(msg.sender, _to, _value);
      return true;
    }
  
  
    function balanceOf(address _owner) public view returns (uint256 balance) {
      return balances[_owner];
    }
  
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
      require(tokenBlacklist[msg.sender] == false);
      require(_to != address(0));
      require(_value <= balances[_from]);
      require(_value <= allowed[_from][msg.sender]);
  
      balances[_from] = balances[_from].sub(_value);
      balances[_to] = balances[_to].add(_value);
      allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
      emit Transfer(_from, _to, _value);
      return true;
    }
  
  
    function approve(address _spender, uint256 _value) public returns (bool) {
      allowed[msg.sender][_spender] = _value;
      emit Approval(msg.sender, _spender, _value);
      return true;
    }
  
  
    function allowance(address _owner, address _spender) public view returns (uint256) {
      return allowed[_owner][_spender];
    }
  
  
    function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
      allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
      emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
      return true;
    }
  
    function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
      uint oldValue = allowed[msg.sender][_spender];
      if (_subtractedValue > oldValue) {
        allowed[msg.sender][_spender] = 0;
      } else {
        allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
      }
      emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
      return true;
    }
    
  
  
    function _blackList(address _address, bool _isBlackListed) internal returns (bool) {
    require(tokenBlacklist[_address] != _isBlackListed);
    tokenBlacklist[_address] = _isBlackListed;
    emit Blacklist(_address, _isBlackListed);
    return true;
    }
  
  
  
  }
  
  contract PausableToken is StandardToken, Pausable {
  
    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) {
      return super.transfer(_to, _value);
    }
  
    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) {
      return super.transferFrom(_from, _to, _value);
    }
  
    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) {
      return super.approve(_spender, _value);
    }
  
    function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) {
      return super.increaseApproval(_spender, _addedValue);
    }
  
    function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) {
      return super.decreaseApproval(_spender, _subtractedValue);
    }
    
    function blackListAddress(address listAddress,  bool isBlackListed) public whenNotPaused onlyOwner  returns (bool success) {
    return super._blackList(listAddress, isBlackListed);
    }
    
  }
  
  contract CoinToken is PausableToken {
      string public name;
      string public symbol;
      uint public decimals;
      event Mint(address indexed from, address indexed to, uint256 value);
      event Burn(address indexed burner, uint256 value);
  
    
      constructor(string memory _name, string memory _symbol, uint256 _decimals, uint256 _supply, address tokenOwner) public {
          name = _name;
          symbol = _symbol;
          decimals = _decimals;
          totalSupply = _supply * 10**_decimals;
          balances[tokenOwner] = totalSupply;
          owner = tokenOwner;
          emit Transfer(address(0), tokenOwner, totalSupply);
      }
    
    function burn(uint256 _value) public {
      _burn(msg.sender, _value);
    }
  
    function _burn(address _who, uint256 _value) internal {
      require(_value <= balances[_who]);
      balances[_who] = balances[_who].sub(_value);
      totalSupply = totalSupply.sub(_value);
      emit Burn(_who, _value);
      emit Transfer(_who, address(0), _value);
    }
  
      function mint(address account, uint256 amount) onlyOwner public {
  
          totalSupply = totalSupply.add(amount);
          balances[account] = balances[account].add(amount);
          emit Mint(address(0), account, amount);
          emit Transfer(address(0), account, amount);
      }
  
      
  }

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