flag.hpp

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#pragma once
 
#include "frontend/common.hpp"
#include "frontend/flag/flagArgs.hpp"
 
namespace by {
 
    struct cli;
 
    typedef std::vector<std::string> strings;
 
    class flag: public instance {
        BY(ADT(flag, instance))
 
    public:
        enum res {
            MATCH,
            EXIT_PROGRAM,
            NOT_MATCH
        };
 
    public:
        virtual const nchar* getName() const = 0;
        virtual const nchar* getDescription() const = 0;
 
        virtual res take(interpreter& ip, starter& s, cli& c, flagArgs& a, errReport& rpt) const;
 
        nbool canTake(const std::string& pattern) const;
 
    protected:
        virtual ncnt getArgCount() const;
 
        void _delArgs(flagArgs& a, ncnt deleteOptionCnt) const;
 
        virtual const strings& _getRegExpr() const = 0;
        virtual res _onTake(const flagArgs& tray, cli& c, interpreter& ip, starter& s, errReport& rpt) const = 0;
 
    private:
        ncnt _parseOption(flagArgs& a, flagArgs& tray, errReport& rpt) const;
    };
 
    typedef std::vector<tstr<flag>> flags;
} // namespace by