[Bf-blender-cvs] [f7e2559fd64] master: BLI: improve enum operators

[Jacques Lucke]

Commit: f7e2559fd649610881b1749b6d30cc2ba9fcbdb6
Author: Jacques Lucke
Date:   Mon Jun 28 13:10:48 2021 +0200
Branches: master
https://developer.blender.org/rBf7e2559fd649610881b1749b6d30cc2ba9fcbdb6

BLI: improve enum operators

* Use unsigned integer types for bit operations.
* Use 64 bit integer instead of 32 bit.
* Support scoped enumes (aka `enum class`) by adding some more casts.

===================================================================

M	source/blender/blenlib/BLI_utildefines.h

===================================================================

diff --git a/source/blender/blenlib/BLI_utildefines.h b/source/blender/blenlib/BLI_utildefines.h
index 0ddabcaa2fb..5b84e050f82 100644
--- a/source/blender/blenlib/BLI_utildefines.h
+++ b/source/blender/blenlib/BLI_utildefines.h
@@ -788,23 +788,24 @@ extern bool BLI_memory_is_zero(const void *arr, const size_t arr_size);
     extern "C++" { \
     inline constexpr _enum_type operator|(_enum_type a, _enum_type b) \
     { \
-      return static_cast<_enum_type>(static_cast<int>(a) | b); \
+      return static_cast<_enum_type>(static_cast<uint64_t>(a) | static_cast<uint64_t>(b)); \
     } \
     inline constexpr _enum_type operator&(_enum_type a, _enum_type b) \
     { \
-      return static_cast<_enum_type>(static_cast<int>(a) & b); \
+      return static_cast<_enum_type>(static_cast<uint64_t>(a) & static_cast<uint64_t>(b)); \
     } \
     inline constexpr _enum_type operator~(_enum_type a) \
     { \
-      return static_cast<_enum_type>(~static_cast<int>(a) & (2 * _max_enum_value - 1)); \
+      return static_cast<_enum_type>(~static_cast<uint64_t>(a) & \
+                                     (2 * static_cast<uint64_t>(_max_enum_value) - 1)); \
     } \
     inline _enum_type &operator|=(_enum_type &a, _enum_type b) \
     { \
-      return a = static_cast<_enum_type>(static_cast<int>(a) | b); \
+      return a = static_cast<_enum_type>(static_cast<uint64_t>(a) | static_cast<uint64_t>(b)); \
     } \
     inline _enum_type &operator&=(_enum_type &a, _enum_type b) \
     { \
-      return a = static_cast<_enum_type>(static_cast<int>(a) & b); \
+      return a = static_cast<_enum_type>(static_cast<uint64_t>(a) & static_cast<uint64_t>(b)); \
     } \
     } /* extern "C++" */