contract ERC223ReceivingContract {
/**
 * @dev Standard ERC223 function that will handle incoming token transfers.
 *
 * @param _from  Token sender address.
 * @param _value Amount of tokens.
 * @param _data  Transaction metadata.
 */
    function tokenFallback(address _from, uint _value, bytes _data) public returns (bool success);
    function tokenFallbackBuyer(address _from, uint _value, address _buyer) public returns (bool success);
    function tokenFallbackExchange(address _from, uint _value, uint _price) public returns (bool success);
}
/**
 * @title Contract that will work with ERC223 tokens.
 */
function tokenFallback(address _from, uint _value, bytes _data) public returns (bool success);
/**
 * @dev Standard ERC223 function that will handle incoming token transfers.
 *
 * @param _from  Token sender address.
 * @param _value Amount of tokens.
 * @param _data  Transaction metadata.
 */