Program Listing for File basic-type.h

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#pragma once

#include <cstdint>
#include <cstddef>
#include <type_traits>


namespace gpa {
namespace serialization {

enum class BasicType {
    kUndefined,
    kFloat,
    kDouble,
    kString,
    kWideString,
    kInt8,
    kInt16,
    kInt32,
    kInt64,
    kUInt8,
    kUInt16,
    kUInt32,
    kUInt64,
    kHandle,
    kPointer,
    kEmbedded,
    kUserDefined,
};

constexpr BasicType GetBasicType(float)
{
    return BasicType::kFloat;
}
constexpr BasicType GetBasicType(double)
{
    return BasicType::kDouble;
}
constexpr BasicType GetBasicType(char const*)
{
    return BasicType::kString;
}
constexpr BasicType GetBasicType(char*)
{
    return BasicType::kString;
}
constexpr BasicType GetBasicType(wchar_t const*)
{
    return BasicType::kWideString;
}
constexpr BasicType GetBasicType(wchar_t*)
{
    return BasicType::kWideString;
}
constexpr BasicType GetBasicType(char)
{
    return BasicType::kString;
}
constexpr BasicType GetBasicType(int8_t)
{
    return BasicType::kInt8;
}
constexpr BasicType GetBasicType(int16_t)
{
    return BasicType::kInt16;
}
constexpr BasicType GetBasicType(int32_t)
{
    return BasicType::kInt32;
}
#if !defined(__linux__)
constexpr BasicType GetBasicType(long)
{
#if _WIN32
    // https://docs.microsoft.com/en-us/windows/win32/winprog/windows-data-types
    return BasicType::kInt32;
#endif
}
#endif
constexpr BasicType GetBasicType(int64_t)
{
    return BasicType::kInt64;
}
constexpr BasicType GetBasicType(uint8_t)
{
    return BasicType::kUInt8;
}
constexpr BasicType GetBasicType(uint16_t)
{
    return BasicType::kUInt16;
}
constexpr BasicType GetBasicType(uint32_t)
{
    return BasicType::kUInt32;
}
#if !defined(__linux__)
constexpr BasicType GetBasicType(unsigned long)
{
#if _WIN32
    // https://docs.microsoft.com/en-us/windows/win32/winprog/windows-data-types
    return BasicType::kUInt32;
#endif
}
#endif
constexpr BasicType GetBasicType(uint64_t)
{
    return BasicType::kUInt64;
}
constexpr BasicType GetBasicType(void*)
{
    return BasicType::kPointer;
}
constexpr BasicType GetBasicType(void const*)
{
    return BasicType::kPointer;
}

template<typename T, typename std::enable_if<std::is_enum<T>::value, int>::type = 0>
constexpr BasicType GetBasicType(T)
{
    typedef typename std::underlying_type<T>::type TmpType;
    TmpType tmp{0};
    return GetBasicType(tmp);
}

template<typename T, typename std::enable_if<!std::is_enum<T>::value, int>::type = 0, typename std::enable_if<!std::is_class<T>::value, int>::type = 0>
constexpr BasicType GetBasicType(T)
{
    return BasicType::kUserDefined;
}

template<typename T, typename std::enable_if<std::is_class<T>::value, int>::type = 0>
constexpr BasicType GetBasicType(T)
{
    return BasicType::kEmbedded;
}

template<typename T>
constexpr BasicType GetBasicType(T*)
{
    return BasicType::kPointer;
}

template<typename T>
constexpr BasicType GetBasicType(T const*)
{
    return BasicType::kPointer;
}

template<typename T, size_t N>
constexpr BasicType GetBasicType(T[N])
{
    return BasicType::kEmbedded;
}

size_t GetSize(BasicType type);

char const* ToString(BasicType type);

}  // namespace serialization
}  // namespace gpa