text: //
  // Validator.h
  //
  // $Id: //poco/1.4/Util/include/Poco/Util/Validator.h#1 $
  //
  // Library: Util
  // Package: Options
  // Module:  Validator
  //
  // Definition of the Validator class.
  //
  // Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // Permission is hereby granted, free of charge, to any person or organization
  // obtaining a copy of the software and accompanying documentation covered by
  // this license (the "Software") to use, reproduce, display, distribute,
  // execute, and transmit the Software, and to prepare derivative works of the
  // Software, and to permit third-parties to whom the Software is furnished to
  // do so, all subject to the following:
  // 
  // The copyright notices in the Software and this entire statement, including
  // the above license grant, this restriction and the following disclaimer,
  // must be included in all copies of the Software, in whole or in part, and
  // all derivative works of the Software, unless such copies or derivative
  // works are solely in the form of machine-executable object code generated by
  // a source language processor.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  //
  
  
  #ifndef Util_Validator_INCLUDED
  #define Util_Validator_INCLUDED
  
  
  #include "Poco/Util/Util.h"
  #include "Poco/RefCountedObject.h"
  
  
  namespace Poco {
  namespace Util {
  
  
  class Option;
  
  
  class Util_API Validator: public Poco::RefCountedObject
  	/// Validator specifies the interface for option validators.
  	///
  	/// Option validators provide a simple way for the automatic
  	/// validation of command line argument values.
  {
  public:
  	virtual void validate(const Option& option, const std::string& value) = 0;
  		/// Validates the value for the given option.
  		/// Does nothing if the value is valid.
  		///
  		/// Throws an OptionException otherwise.
  
  protected:
  	Validator();
  		/// Creates the Validator.
  
  	virtual ~Validator();
  		/// Destroys the Validator.
  };
  
  
  } } // namespace Poco::Util
  
  
  #endif // Util_Validator_INCLUDED
  