CRO

0xa0b73e1ff0b80914ab6fe0444e65848c4c34450b

totalSupply keyboard_arrow_up

    function totalSupply() public view returns (uint) {
        return totalSupply_.sub(balances[address(0)]);
    }

balanceOf keyboard_arrow_up

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

transfer keyboard_arrow_up

  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

allowance keyboard_arrow_up

  function allowance(
    address _owner,
    address _spender
   )
    public
    view
    returns (uint256)
  {
    return allowed[_owner][_spender];
  }

transferFrom keyboard_arrow_up

  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    returns (bool)
  {
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);
    require(_to != address(0));

    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;
  }

approve keyboard_arrow_up

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

increaseApproval keyboard_arrow_up

  function increaseApproval(
    address _spender,
    uint256 _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;
  }

decreaseApproval keyboard_arrow_up

  function decreaseApproval(
    address _spender,
    uint256 _subtractedValue
  )
    public
    returns (bool)
  {
    uint256 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;
  }

upgrade keyboard_arrow_up

    function upgrade(uint256 value) public {

        UpgradeState state = getUpgradeState();

        require(state == UpgradeState.ReadyToUpgrade, "It's required that the upgrade state is ready.");

        // Validate input value.
        require(value > 0, "The upgrade value is required to be above 0.");

        balances[msg.sender] = balances[msg.sender].sub(value);

        // Take tokens out from circulation
        totalSupply_ = totalSupply_.sub(value);
        totalUpgraded = totalUpgraded.add(value);

        // Upgrade agent reissues the tokens
        upgradeAgent.upgradeFrom(msg.sender, value);
        emit Upgrade(msg.sender, upgradeAgent, value);
    }

setUpgradeAgent keyboard_arrow_up

    function setUpgradeAgent(address agent) external {

        require(canUpgrade(), "It's required to be in canUpgrade() condition when setting upgrade agent.");

        require(agent != address(0), "Agent is required to be an non-empty address when setting upgrade agent.");

        // Only a master can designate the next agent
        require(msg.sender == upgradeMaster, "Message sender is required to be the upgradeMaster when setting upgrade agent.");

        // Upgrade has already begun for an agent
        require(getUpgradeState() != UpgradeState.ReadyToUpgrade, "Upgrade state is required to not be upgrading when setting upgrade agent.");

        require(address(upgradeAgent) == address(0), "upgradeAgent once set, cannot be reset");

        upgradeAgent = UpgradeAgent(agent);

        // Bad interface
        require(upgradeAgent.isUpgradeAgent(), "The provided updateAgent contract is required to be compliant to the UpgradeAgent interface method when setting upgrade agent.");

        // Make sure that token supplies match in source and target
        require(upgradeAgent.originalSupply() == totalSupply_, "The provided upgradeAgent contract's originalSupply is required to be equivalent to existing contract's totalSupply_ when setting upgrade agent.");

        emit UpgradeAgentSet(upgradeAgent);
    }

getUpgradeState keyboard_arrow_up

    function getUpgradeState() public view returns (UpgradeState) {
        if (!canUpgrade()) return UpgradeState.NotAllowed;
        else if (address(upgradeAgent) == address(0)) return UpgradeState.WaitingForAgent;
        else return UpgradeState.ReadyToUpgrade;
    }

setUpgradeMaster keyboard_arrow_up

    function setUpgradeMaster(address master) public {
        require(master != address(0), "The provided upgradeMaster is required to be a non-empty address when setting upgrade master.");

        require(msg.sender == upgradeMaster, "Message sender is required to be the original upgradeMaster when setting (new) upgrade master.");

        upgradeMaster = master;
    }

canUpgrade keyboard_arrow_up

    function canUpgrade() public view returns (bool) {
        return released && super.canUpgrade();
    }

renounceOwnership keyboard_arrow_up

  function renounceOwnership() public onlyOwner {
    emit OwnershipRenounced(owner);
    owner = address(0);
  }

transferOwnership keyboard_arrow_up

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

mint keyboard_arrow_up

  function mint(
    address _to,
    uint256 _amount
  )
    public
    hasMintPermission
    canMint
    returns (bool)
  {
    totalSupply_ = totalSupply_.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    emit Mint(_to, _amount);
    emit Transfer(address(0), _to, _amount);
    return true;
  }

finishMinting keyboard_arrow_up

  function finishMinting() public onlyOwner canMint returns (bool) {
    mintingFinished = true;
    emit MintFinished();
    return true;
  }

setReleaseAgent keyboard_arrow_up

    function setReleaseAgent(address addr) public onlyOwner inReleaseState(false) {

        // We don't do interface check here as we might want to a normal wallet address to act as a release agent
        releaseAgent = addr;
    }

setTransferAgent keyboard_arrow_up

    function setTransferAgent(address addr, bool state) public onlyOwner inReleaseState(false) {
        transferAgents[addr] = state;
    }

releaseTokenTransfer keyboard_arrow_up

    function releaseTokenTransfer() public onlyReleaseAgent {
        mintingFinished = true;
        super.releaseTokenTransfer();
    }

transfer keyboard_arrow_up

    function transfer(address _to, uint _value) public canTransfer(msg.sender) returns (bool success) {
        // Call StandardToken.transfer()
        return super.transfer(_to, _value);
    }

transferFrom keyboard_arrow_up

    function transferFrom(address _from, address _to, uint _value) public canTransfer(_from) returns (bool success) {
        // Call StandardToken.transferForm()
        return super.transferFrom(_from, _to, _value);
    }