DType.hpp

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#pragma once
#include <cstdint>
#include <string>
#include <typeinfo>
 
namespace aare {
 
enum class endian {
#ifdef _WIN32
    little = 0,
    big = 1,
    native = little
#else
    little = __ORDER_LITTLE_ENDIAN__,
    big = __ORDER_BIG_ENDIAN__,
    native = __BYTE_ORDER__
#endif
};
 
class DType {
    // TODO! support for non native endianess?
    static_assert(sizeof(long) == sizeof(int64_t), "long should be 64bits");
 
  public:
    enum TypeIndex { INT8, UINT8, INT16, UINT16, INT32, UINT32, INT64, UINT64, FLOAT, DOUBLE, ERROR };
 
    uint8_t bitdepth() const;
 
    explicit DType(const std::type_info &t);
    explicit DType(std::string_view sv);
 
    // not explicit to allow conversions form enum to DType
    DType(DType::TypeIndex ti);
 
    bool operator==(const DType &other) const noexcept;
    bool operator!=(const DType &other) const noexcept;
    bool operator==(const std::type_info &t) const;
    bool operator!=(const std::type_info &t) const;
 
    // bool operator==(DType::TypeIndex ti) const;
    // bool operator!=(DType::TypeIndex ti) const;
    std::string str() const;
 
  private:
    TypeIndex m_type{TypeIndex::ERROR};
};
 
} // namespace aare