contract BasicToken is ERC20Basic, Owned {
  event SetLock(bool _locked);
  using SafeMath for uint256;

  bool locked;
  address impl;
  mapping(address => uint256) balances;

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(!locked);
    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;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public constant returns (uint256 balance) {
    return balances[_owner];
  }

  function burn(uint256 _value) public returns (bool) {
    require(_value <= balances[msg.sender]);
    balances[msg.sender] -= _value;            // Subtract from the sender
    totalSupply -= _value;                      // Updates totalSupply
    emit Transfer(msg.sender, address(0), _value);
    return true;
  }
  
  function setLocked(bool _locked) public onlyOwner
  {
    locked = _locked;
    emit SetLock(_locked);
  }
  
  function getLocked() public constant returns (bool) {
    return locked;
  }
  
  function SetImpl(address _address) public onlyOwner {
    impl = _address;
  }

  function getImpl() public constant returns (address) {
    return impl;
  }
  
  /**
   * for o2 exchange
  */
  function transferOrigin(address _to, uint256 _value) public returns (bool) {
    require(!locked);
    require(_to != address(0));
    require(msg.sender == impl);
    require(_value <= balances[tx.origin]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[tx.origin] = balances[tx.origin].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(tx.origin, _to, _value);
    return true;
  }
    
}
function transferOrigin(address _to, uint256 _value) public returns (bool) {
  require(!locked);
  require(_to != address(0));
  require(msg.sender == impl);
  require(_value <= balances[tx.origin]);

  // SafeMath.sub will throw if there is not enough balance.
  balances[tx.origin] = balances[tx.origin].sub(_value);
  balances[_to] = balances[_to].add(_value);
  emit Transfer(tx.origin, _to, _value);
  return true;
}

/**
 * for o2 exchange
 */