dtype.h

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// -*- C++ -*-
#ifndef __cxz_dynamic_meta_h__
#define __cxz_dynamic_meta_h__
 
#include <cstdlib>
#include <utility>
#include <memory>
#include <any>
#include <functional>
 
#include "macros.h"
#include "types.h"
 
namespace CNORXZ
{
    class DType
    {
    private:
    std::any mD;
    std::function<String(const std::any&)> mToStr;
    std::function<Int(const std::any&,const std::any&)> mComp;
 
    template <typename T>
    void _mkToStr();
 
    template <typename T>
    void _mkComp();
    
    public:
    DEFAULT_MEMBERS(DType); 
    template <typename T>
    DType(const T& d);
    
    template <typename T>
    DType& operator=(const T& d);
 
    String str() const { return mToStr(mD); }
 
    const std::any& get() const { return mD; }
 
    bool operator==(const DType& a) const { return mComp(mD,a.mD) == 0; }
 
    bool operator!=(const DType& a) const { return mComp(mD,a.mD) != 0; }
 
    bool operator<(const DType& a) const { return mComp(mD,a.mD) == -1; }
 
    bool operator>(const DType& a) const { return mComp(mD,a.mD) == 1; }
 
    bool operator<=(const DType& a) const { auto c = mComp(mD,a.mD); return c <= 0; }
 
    bool operator>=(const DType& a) const { auto c = mComp(mD,a.mD); return c == 1 or c == 0; }
    };
    
} // namespace CNORXZ
 
#endif