Status.h

#ifndef STATUS_H
#define STATUS_H

#include <cstdint>

//
// All contents adapted from Arrow's own Status class
//


// Return the given status if it is not OK.
#define DB_RETURN_NOT_OK(s)              \
  do {                                   \
    ::db::Status _s = (s);               \
    if (!_s.ok()) {                      \
      return _s;                         \
    }                                    \
  } while (false)

namespace db {

    enum class StatusCode : std::uint8_t {
        OK = 0,
        NotFound = 1,
        InternalError = 2,
        OutOfMemory = 3,
        UnevenArgLists = 4,
        InvalidColumn = 5
    };

    class Status {

    public:

        Status(StatusCode code) : _code(code) {}

        static Status OK() { return Status(StatusCode::OK); }

        bool ok() const { return (_code == StatusCode::OK); }

        bool notFound() const { return (_code == StatusCode::NotFound); }

        bool internalError() const { return (_code == StatusCode::InternalError); }

        bool outOfMemory() const { return (_code == StatusCode::OutOfMemory); }

        bool unevenArgLists() const { return (_code == StatusCode::UnevenArgLists); }

        bool invalidColumn() const { return (_code == StatusCode::InvalidColumn); }


        StatusCode code() const { return _code; }

    private:

        StatusCode _code;

    };

};

#endif //STATUS_H