required.h

#ifndef __COMMAND_REQUIRED_H
#define __COMMAND_REQUIRED_H
 
#include "parameter.h"
 
namespace command {
    class Required : public Parameter {
    protected:
        Parameter * parameter;
 
    public:
        Required(Parameter * parameter)
            : Parameter(parameter->describe()), parameter(parameter) {
        }
 
        virtual ~Required() {
            delete parameter;
        }
 
        virtual void handle() {
            parameter->handle();
        }
 
        virtual bool understand(const std::string & value) {
            return parameter->understand(value);
        }
 
        virtual bool isRequired() {
            return true;
        };
 
        virtual bool isUsed() {
            return parameter->isUsed();
        }
 
        virtual unsigned int valuePosition(const std::string & value) {
            return parameter->valuePosition(value);
        }
    };
}
 
#endif /* __COMMAND_REQUIRED_H */