diff options
Diffstat (limited to 'source/blender/blenlib/BLI_utildefines.h')
| -rw-r--r-- | source/blender/blenlib/BLI_utildefines.h | 47 |
1 files changed, 42 insertions, 5 deletions
diff --git a/source/blender/blenlib/BLI_utildefines.h b/source/blender/blenlib/BLI_utildefines.h index 1f28f7e80c5..2699f2498ac 100644 --- a/source/blender/blenlib/BLI_utildefines.h +++ b/source/blender/blenlib/BLI_utildefines.h @@ -627,11 +627,11 @@ extern bool BLI_memory_is_zero(const void *arr, const size_t arr_size); /** \name String Macros * \{ */ -/* Macro to convert a value to string in the preprocessor - * STRINGIFY_ARG: gives the argument as a string - * STRINGIFY_APPEND: appends any argument 'b' onto the string argument 'a', - * used by STRINGIFY because some preprocessors warn about zero arguments - * STRINGIFY: gives the argument's value as a string */ +/* Macro to convert a value to string in the pre-processor: + * - `STRINGIFY_ARG`: gives the argument as a string + * - `STRINGIFY_APPEND`: appends any argument 'b' onto the string argument 'a', + * used by `STRINGIFY` because some preprocessors warn about zero arguments + * - `STRINGIFY`: gives the argument's value as a string. */ #define STRINGIFY_ARG(x) "" #x #define STRINGIFY_APPEND(a, b) "" a #b #define STRINGIFY(x) STRINGIFY_APPEND("", x) @@ -755,6 +755,43 @@ extern bool BLI_memory_is_zero(const void *arr, const size_t arr_size); /** \} */ /* -------------------------------------------------------------------- */ +/** \name C++ Macros + * \{ */ + +#ifdef __cplusplus + +/* Useful to port C code using enums to C++ where enums are strongly typed. + * To use after the enum declaration. */ +# define ENUM_OPERATORS(_enum_type) \ + inline constexpr _enum_type operator|(_enum_type a, _enum_type b) \ + { \ + return a = static_cast<_enum_type>(static_cast<int>(a) | b); \ + } \ + inline constexpr _enum_type operator&(_enum_type a, _enum_type b) \ + { \ + return a = static_cast<_enum_type>(static_cast<int>(a) & b); \ + } \ + inline constexpr _enum_type operator~(_enum_type a) \ + { \ + return a = static_cast<_enum_type>(~static_cast<int>(a)); \ + } \ + inline _enum_type &operator|=(_enum_type &a, _enum_type b) \ + { \ + return a = static_cast<_enum_type>(static_cast<int>(a) | b); \ + } \ + inline _enum_type &operator&=(_enum_type &a, _enum_type b) \ + { \ + return a = static_cast<_enum_type>(static_cast<int>(a) & b); \ + } + +#else +/* Output nothing. */ +# define ENUM_OPERATORS(_type) +#endif + +/** \} */ + +/* -------------------------------------------------------------------- */ /** \name Misc Macros * \{ */ |