From 29285919fdcaa9be4185112097cdf1265877a4f8 Mon Sep 17 00:00:00 2001
From: Bela Schaum <schaumb@users.noreply.github.com>
Date: Fri, 18 Feb 2022 22:37:24 +0100
Subject: [PATCH] change std::size_t to std::uintmax_t (#141)

---
 include/magic_enum.hpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/magic_enum.hpp b/include/magic_enum.hpp
index a2b28aa..eb8f68e 100644
--- a/include/magic_enum.hpp
+++ b/include/magic_enum.hpp
@@ -914,7 +914,7 @@ template <typename E, typename BinaryPredicate = std::equal_to<char>>
 namespace fusion_detail {
 
 template <typename E>
-constexpr std::optional<std::size_t> fuse_one_enum(std::optional<std::size_t> hash, E value) noexcept {
+constexpr std::optional<std::uintmax_t> fuse_one_enum(std::optional<std::uintmax_t> hash, E value) noexcept {
   if (hash.has_value()) {
     if (const auto index = enum_index(value); index.has_value()) {
       // Add 1 to prevent matching 2D fusions with 3D fusions etc.
@@ -925,12 +925,12 @@ constexpr std::optional<std::size_t> fuse_one_enum(std::optional<std::size_t> ha
 }
 
 template <typename E>
-constexpr std::optional<std::size_t> fuse_enum(E value) noexcept {
+constexpr std::optional<std::uintmax_t> fuse_enum(E value) noexcept {
   return fuse_one_enum(0, value);
 }
 
 template <typename E, typename... Es>
-constexpr std::optional<std::size_t> fuse_enum(E head, Es... tail) noexcept {
+constexpr std::optional<std::uintmax_t> fuse_enum(E head, Es... tail) noexcept {
   return fuse_one_enum(fuse_enum(tail...), head);
 }
 
@@ -938,9 +938,9 @@ constexpr std::optional<std::size_t> fuse_enum(E head, Es... tail) noexcept {
 
 // Returns a bijective mix of several enum values. This can be used to emulate 2D switch/case statements.
 template <typename... Es>
-[[nodiscard]] constexpr auto enum_fuse(Es... values) -> std::enable_if_t<(std::is_enum_v<std::decay_t<Es>> && ...), std::optional<std::size_t>> {
+[[nodiscard]] constexpr auto enum_fuse(Es... values) -> std::enable_if_t<(std::is_enum_v<std::decay_t<Es>> && ...), std::optional<std::uintmax_t>> {
   static_assert(sizeof...(Es) >= 2, "magic_enum::enum_fuse requires at least 2 enums");
-  static_assert((detail::log2(enum_count<Es>() + 1) + ...) <= (sizeof(std::size_t) * 8), "magic_enum::enum_fuse does not work for large enums");
+  static_assert((detail::log2(enum_count<Es>() + 1) + ...) <= (sizeof(std::uintmax_t) * 8), "magic_enum::enum_fuse does not work for large enums");
   const auto fuse = fusion_detail::fuse_enum(values...);
   return assert(fuse.has_value()), fuse;
 }