PCH.h

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#pragma once
 
#include <algorithm>
#include <array>
#include <bit>
#include <bitset>
#include <cassert>
#include <cmath>
#include <concepts>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cwchar>
#include <cwctype>
#include <exception>
#include <execution>
#include <filesystem>
#include <format>
#include <fstream>
#include <functional>
#include <intrin.h>
#include <iomanip>
#include <ios>
#include <istream>
#include <iterator>
#include <limits>
#include <locale>
#include <map>
#include <memory>
#include <mutex>
#include <new>
#include <numeric>
#include <optional>
#include <random>
#include <ranges>
#include <regex>
#include <set>
#include <source_location>
#include <span>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <string>
#include <string_view>
#include <system_error>
#include <thread>
#include <tuple>
#include <type_traits>
#include <typeinfo>
#include <utility>
#include <variant>
#include <vector>
 
static_assert(
    std::is_integral_v<std::time_t> && sizeof(std::time_t) == sizeof(std::size_t),
    "wrap std::time_t instead");
 
#include "REX/REX/Enum.h"
#include "REX/REX/EnumSet.h"
#include "REX/W32/KERNEL32.h"
#include "REX/W32/USER32.h"
 
#pragma warning(push)
#include <binary_io/file_stream.hpp>
#include <spdlog/spdlog.h>
#pragma warning(pop)
 
namespace SKSE
{
    using namespace std::literals;
 
    namespace stl
    {
        template <class CharT>
        using basic_zstring = std::basic_string_view<CharT>;
 
        using zstring = basic_zstring<char>;
        using zwstring = basic_zstring<wchar_t>;
 
        // owning pointer
        template <
            class T,
            class = std::enable_if_t<
                std::is_pointer_v<T>>>
        using owner = T;
 
        // non-owning pointer
        template <
            class T,
            class = std::enable_if_t<
                std::is_pointer_v<T>>>
        using observer = T;
 
        // non-null pointer
        template <
            class T,
            class = std::enable_if_t<
                std::is_pointer_v<T>>>
        using not_null = T;
 
        namespace nttp
        {
            template <class CharT, std::size_t N>
            struct string
            {
                using char_type = CharT;
                using pointer = char_type*;
                using const_pointer = const char_type*;
                using reference = char_type&;
                using const_reference = const char_type&;
                using size_type = std::size_t;
 
                static constexpr auto npos = static_cast<std::size_t>(-1);
 
                consteval string(const_pointer a_string) noexcept
                {
                    for (size_type i = 0; i < N; ++i) {
                        c[i] = a_string[i];
                    }
                }
 
                [[nodiscard]] consteval const_reference operator[](size_type a_pos) const noexcept
                {
                    assert(a_pos < N);
                    return c[a_pos];
                }
 
                [[nodiscard]] consteval const_reference back() const noexcept { return (*this)[size() - 1]; }
                [[nodiscard]] consteval const_pointer   data() const noexcept { return c; }
                [[nodiscard]] consteval bool            empty() const noexcept { return this->size() == 0; }
                [[nodiscard]] consteval const_reference front() const noexcept { return (*this)[0]; }
                [[nodiscard]] consteval size_type       length() const noexcept { return N; }
                [[nodiscard]] consteval size_type       size() const noexcept { return length(); }
 
                template <std::size_t POS = 0, std::size_t COUNT = npos>
                [[nodiscard]] consteval auto substr() const noexcept
                {
                    return string < CharT, COUNT != npos ? COUNT : N - POS > (this->data() + POS);
                }
 
                char_type c[N] = {};
            };
 
            template <class CharT, std::size_t N>
            string(const CharT (&)[N]) -> string<CharT, N - 1>;
        }
 
        template <class EF>
        requires(std::invocable<std::remove_reference_t<EF>>) class scope_exit
        {
        public:
            // 1)
            template <class Fn>
            explicit scope_exit(Fn&& a_fn) noexcept(std::is_nothrow_constructible_v<EF, Fn> ||
                                                    std::is_nothrow_constructible_v<EF, Fn&>)  //
                requires(!std::is_same_v<std::remove_cvref_t<Fn>, scope_exit> &&
                         std::is_constructible_v<EF, Fn>)
            {
                static_assert(std::invocable<Fn>);
 
                if constexpr (!std::is_lvalue_reference_v<Fn> &&
                              std::is_nothrow_constructible_v<EF, Fn>) {
                    _fn.emplace(std::forward<Fn>(a_fn));
                } else {
                    _fn.emplace(a_fn);
                }
            }
 
            // 2)
            scope_exit(scope_exit&& a_rhs) noexcept(std::is_nothrow_move_constructible_v<EF> ||
                                                    std::is_nothrow_copy_constructible_v<EF>)  //
                requires(std::is_nothrow_move_constructible_v<EF> ||
                         std::is_copy_constructible_v<EF>)
            {
                static_assert(!(std::is_nothrow_move_constructible_v<EF> && !std::is_move_constructible_v<EF>));
                static_assert(!(!std::is_nothrow_move_constructible_v<EF> && !std::is_copy_constructible_v<EF>));
 
                if (a_rhs.active()) {
                    if constexpr (std::is_nothrow_move_constructible_v<EF>) {
                        _fn.emplace(std::forward<EF>(*a_rhs._fn));
                    } else {
                        _fn.emplace(a_rhs._fn);
                    }
                    a_rhs.release();
                }
            }
 
            // 3)
            scope_exit(const scope_exit&) = delete;
 
            ~scope_exit() noexcept
            {
                if (_fn.has_value()) {
                    (*_fn)();
                }
            }
 
            void release() noexcept { _fn.reset(); }
 
        private:
            [[nodiscard]] bool active() const noexcept { return _fn.has_value(); }
 
            std::optional<std::remove_reference_t<EF>> _fn;
        };
 
        template <class EF>
        scope_exit(EF) -> scope_exit<EF>;
 
        // backwards compat
        template <
            class E,
            class U = std::underlying_type_t<E>>
        class enumeration : public REX::EnumSet<E, U>
        {
            using super = REX::EnumSet<E, U>;
 
        public:
            using enum_type = E;
            using underlying_type = U;
 
            using super::super;
            using super::operator=;
            using super::operator*;
        };
 
        template <class... Args>
        enumeration(Args...) -> enumeration<
            std::common_type_t<Args...>,
            std::underlying_type_t<
                std::common_type_t<Args...>>>;
    }
}
 
namespace SKSE
{
    namespace stl
    {
        template <class T>
        class atomic_ref :
            public std::atomic_ref<T>
        {
        private:
            using super = std::atomic_ref<T>;
 
        public:
            using value_type = typename super::value_type;
 
            explicit atomic_ref(volatile T& a_obj) noexcept(std::is_nothrow_constructible_v<super, value_type&>) :
                super(const_cast<value_type&>(a_obj))
            {}
 
            using super::super;
            using super::operator=;
        };
 
        template <class T>
        atomic_ref(volatile T&) -> atomic_ref<T>;
 
        template class atomic_ref<std::int8_t>;
        template class atomic_ref<std::uint8_t>;
        template class atomic_ref<std::int16_t>;
        template class atomic_ref<std::uint16_t>;
        template class atomic_ref<std::int32_t>;
        template class atomic_ref<std::uint32_t>;
        template class atomic_ref<std::int64_t>;
        template class atomic_ref<std::uint64_t>;
 
        static_assert(atomic_ref<std::int8_t>::is_always_lock_free);
        static_assert(atomic_ref<std::uint8_t>::is_always_lock_free);
        static_assert(atomic_ref<std::int16_t>::is_always_lock_free);
        static_assert(atomic_ref<std::uint16_t>::is_always_lock_free);
        static_assert(atomic_ref<std::int32_t>::is_always_lock_free);
        static_assert(atomic_ref<std::uint32_t>::is_always_lock_free);
        static_assert(atomic_ref<std::int64_t>::is_always_lock_free);
        static_assert(atomic_ref<std::uint64_t>::is_always_lock_free);
 
        template <class T>
        struct ssizeof
        {
            [[nodiscard]] constexpr operator std::ptrdiff_t() const noexcept { return value; }
 
            [[nodiscard]] constexpr std::ptrdiff_t operator()() const noexcept { return value; }
 
            static constexpr auto value = static_cast<std::ptrdiff_t>(sizeof(T));
        };
 
        template <class T>
        inline constexpr auto ssizeof_v = ssizeof<T>::value;
 
        template <class T, class U>
        [[nodiscard]] auto adjust_pointer(U* a_ptr, std::ptrdiff_t a_adjust) noexcept
        {
            auto addr = a_ptr ? reinterpret_cast<std::uintptr_t>(a_ptr) + a_adjust : 0;
            if constexpr (std::is_const_v<U> && std::is_volatile_v<U>) {
                return reinterpret_cast<std::add_cv_t<T>*>(addr);
            } else if constexpr (std::is_const_v<U>) {
                return reinterpret_cast<std::add_const_t<T>*>(addr);
            } else if constexpr (std::is_volatile_v<U>) {
                return reinterpret_cast<std::add_volatile_t<T>*>(addr);
            } else {
                return reinterpret_cast<T*>(addr);
            }
        }
 
        template <class T>
        void emplace_vtable(T* a_ptr)
        {
            reinterpret_cast<std::uintptr_t*>(a_ptr)[0] = T::VTABLE[0].address();
        }
 
        template <class T>
        void memzero(volatile T* a_ptr, std::size_t a_size = sizeof(T))
        {
            const auto     begin = reinterpret_cast<volatile char*>(a_ptr);
            constexpr char val{ 0 };
            std::fill_n(begin, a_size, val);
        }
 
        template <class... Args>
        [[nodiscard]] inline auto pun_bits(Args... a_args)  //
            requires(std::same_as<std::remove_cv_t<Args>, bool>&&...)
        {
            constexpr auto ARGC = sizeof...(Args);
 
            std::bitset<ARGC> bits;
            std::size_t       i = 0;
            ((bits[i++] = a_args), ...);
 
            if constexpr (ARGC <= std::numeric_limits<unsigned long>::digits) {
                return bits.to_ulong();
            } else if constexpr (ARGC <= std::numeric_limits<unsigned long long>::digits) {
                return bits.to_ullong();
            } else {
                static_assert(false && sizeof...(Args));
            }
        }
 
        [[nodiscard]] inline auto utf8_to_utf16(std::string_view a_in) noexcept
            -> std::optional<std::wstring>
        {
            const auto cvt = [&](wchar_t* a_dst, std::size_t a_length) {
                return REX::W32::MultiByteToWideChar(
                    REX::W32::CP_UTF8,
                    0,
                    a_in.data(),
                    static_cast<int>(a_in.length()),
                    a_dst,
                    static_cast<int>(a_length));
            };
 
            const auto len = cvt(nullptr, 0);
            if (len == 0) {
                return std::nullopt;
            }
 
            std::wstring out(len, '\0');
            if (cvt(out.data(), out.length()) == 0) {
                return std::nullopt;
            }
 
            return out;
        }
 
        [[nodiscard]] inline auto utf16_to_utf8(std::wstring_view a_in) noexcept
            -> std::optional<std::string>
        {
            const auto cvt = [&](char* a_dst, std::size_t a_length) {
                return REX::W32::WideCharToMultiByte(
                    REX::W32::CP_UTF8,
                    0,
                    a_in.data(),
                    static_cast<int>(a_in.length()),
                    a_dst,
                    static_cast<int>(a_length),
                    nullptr,
                    nullptr);
            };
 
            const auto len = cvt(nullptr, 0);
            if (len == 0) {
                return std::nullopt;
            }
 
            std::string out(len, '\0');
            if (cvt(out.data(), out.length()) == 0) {
                return std::nullopt;
            }
 
            return out;
        }
 
        [[noreturn]] inline void report_and_fail(std::string_view a_msg, std::source_location a_loc = std::source_location::current())
        {
            const auto body = [&]() {
                const std::filesystem::path p = a_loc.file_name();
                auto                        filename = p.lexically_normal().generic_string();
 
                const std::regex r{ R"((?:^|[\\\/])(?:include|src)[\\\/](.*)$)" };
                std::smatch      matches;
                if (std::regex_search(filename, matches, r)) {
                    filename = matches[1].str();
                }
 
                return utf8_to_utf16(
                    std::format(
                        "{}({}): {}"sv,
                        filename,
                        a_loc.line(),
                        a_msg))
                    .value_or(L"<character encoding error>"s);
            }();
 
            const auto caption = []() {
                std::vector<wchar_t> buf;
                buf.reserve(REX::W32::MAX_PATH);
                buf.resize(REX::W32::MAX_PATH / 2);
                std::uint32_t result = 0;
                do {
                    buf.resize(buf.size() * 2);
                    result = REX::W32::GetModuleFileNameW(
                        REX::W32::GetCurrentModule(),
                        buf.data(),
                        static_cast<std::uint32_t>(buf.size()));
                } while (result && result == buf.size() && buf.size() <= std::numeric_limits<std::uint32_t>::max());
 
                if (result && result != buf.size()) {
                    std::filesystem::path p(buf.begin(), buf.begin() + result);
                    return p.filename().native();
                } else {
                    return L""s;
                }
            }();
 
            spdlog::log(
                spdlog::source_loc{
                    a_loc.file_name(),
                    static_cast<int>(a_loc.line()),
                    a_loc.function_name() },
                spdlog::level::critical,
                a_msg);
            REX::W32::MessageBoxW(nullptr, body.c_str(), (caption.empty() ? nullptr : caption.c_str()), 0);
            REX::W32::TerminateProcess(REX::W32::GetCurrentProcess(), EXIT_FAILURE);
        }
 
        template <class To, class From>
        [[nodiscard]] To unrestricted_cast(From a_from) noexcept
        {
            if constexpr (std::is_same_v<
                              std::remove_cv_t<From>,
                              std::remove_cv_t<To>>) {
                return To{ a_from };
 
                // From != To
            } else if constexpr (std::is_reference_v<From>) {
                return stl::unrestricted_cast<To>(std::addressof(a_from));
 
                // From: NOT reference
            } else if constexpr (std::is_reference_v<To>) {
                return *stl::unrestricted_cast<
                    std::add_pointer_t<
                        std::remove_reference_t<To>>>(a_from);
 
                // To: NOT reference
            } else if constexpr (std::is_pointer_v<From> &&
                                 std::is_pointer_v<To>) {
                return static_cast<To>(
                    const_cast<void*>(
                        static_cast<const volatile void*>(a_from)));
            } else if constexpr ((std::is_pointer_v<From> && std::is_integral_v<To>) ||
                                 (std::is_integral_v<From> && std::is_pointer_v<To>)) {
                return reinterpret_cast<To>(a_from);
            } else {
                union
                {
                    std::remove_cv_t<std::remove_reference_t<From>> from;
                    std::remove_cv_t<std::remove_reference_t<To>>   to;
                };
 
                from = std::forward<From>(a_from);
                return to;
            }
        }
    }
}
 
namespace RE
{
    using namespace std::literals;
    namespace stl = SKSE::stl;
}
 
namespace REL
{
    using namespace std::literals;
    namespace stl = SKSE::stl;
}
 
#ifdef SKYRIM_SUPPORT_AE
#   define RELOCATION_ID(SE, AE) REL::ID(AE)
#else
#   define RELOCATION_ID(SE, AE) REL::ID(SE)
#endif
 
#include "REL/REL.h"
 
#include "RE/Offsets.h"
#include "RE/Offsets_NiRTTI.h"
#include "RE/Offsets_RTTI.h"
#include "RE/Offsets_VTABLE.h"
 
#include "RE/B/BSCoreTypes.h"
#include "RE/S/SFTypes.h"