#pragma once

#if defined(__has_include)
  #if __has_include(<expected>) && defined(__cpp_lib_expected) && (__cpp_lib_expected >= 202202L)
    #include <expected>
    #define HAS_STD_EXPECTED 1
  #endif
#endif

#if defined(HAS_STD_EXPECTED)

namespace Psc {
template<class T, class E>
using expected = std::expected<T, E>;

template<class E>
using unexpected = std::unexpected<E>;

template<class E>
using bad_expected_access = std::bad_expected_access<E>;

using unexpect_t = std::unexpect_t;
inline constexpr unexpect_t unexpect = std::unexpect;
}

#else

#include "../3rd/tl/expected.hpp"

namespace Psc {
template<class T, class E>
using expected = tl::expected<T, E>;

template<class E>
using unexpected = tl::unexpected<E>;

template<class E>
using bad_expected_access = tl::bad_expected_access<E>;

// tl 版本通常也有 unexpect_t / unexpect（名字可能略不同，按你的 tl/expected.hpp 实际为准）
using unexpect_t = tl::unexpect_t;
inline constexpr unexpect_t unexpect{};
}

#endif


#include <system_error>
#include <cstdint>

namespace Psc {
#ifdef WIN32
    using ERROR_CODE_TYPE = int;
#else
    using ERROR_CODE_TYPE = int;
#endif
    ERROR_CODE_TYPE get_error_code();
    void set_error_code(ERROR_CODE_TYPE code);
    std::string get_error_message();
    std::string get_error_message(ERROR_CODE_TYPE ec);
}