parameter.h

#ifndef __COMMAND_PARAMETER_H
#define __COMMAND_PARAMETER_H
 
#include <string>
#include <sstream>
 
#include "descriptive.h"
#include "callable.h"
 
namespace command {
    class Parameter : public Descriptive {
    protected:
        bool used = false;
 
    public:
        typedef class Parameter Type;
        Parameter(const std::string & description)
            : Descriptive(description) {
        }
 
        virtual ~Parameter() { }
 
        virtual void handle() = 0;
 
        virtual bool understand(const std::string & ) = 0;
 
        virtual bool isRequired() {
            return false;
        };
 
        virtual bool isUsed() {
            return used;
        }
 
        virtual bool hungryForValue() {
            return false;
        }
 
        virtual unsigned int valuePosition(const std::string & ) = 0;
    };
}
 
#endif /* __COMMAND_PARAMETER_H */