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Add ability to include external configuration header (#86)

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* Add ability to include external configuration header

* Add documentation regarding MAGIC_ENUM_CONFIG_FILE
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sajimon 2021-06-17 15:06:27 +02:00 • committed by GitHub
parent 8c130658e1
commit 081a77b96a
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16
doc/reference.md
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@ -38,6 +38,22 @@
#define MAGIC_ENUM_USING_ALIAS_OPTIONAL template <typename T> using optional = my_lib::Optional<T>; #define MAGIC_ENUM_USING_ALIAS_OPTIONAL template <typename T> using optional = my_lib::Optional<T>;
#include <magic_enum.hpp> #include <magic_enum.hpp>
``` ```
Optionally define `MAGIC_ENUM_CONFIG_FILE` i.e., in your build system, with path to header file with defined
macros or constants, for example:
```cpp
#define MAGIC_ENUM_CONFIG_FILE "my_magic_enum_cfg.hpp"
```
my_magic_enum_cfg.hpp:
```cpp
#include <my_lib/string.hpp>
#include <my_lib/string_view.hpp>
#define MAGIC_ENUM_USING_ALIAS_STRING using string = my_lib::String;
#define MAGIC_ENUM_USING_ALIAS_STRING_VIEW using string_view = my_lib::StringView;
#define MAGIC_ENUM_USING_ALIAS_OPTIONAL template <typename T> using optional = my_lib::Optional<T>;
#define MAGIC_ENUM_RANGE_MIN 0
#define MAGIC_ENUM_RANGE_MAX 255
```
## `enum_cast` ## `enum_cast`

4
include/magic_enum.hpp
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@ -45,6 +45,10 @@
#include <type_traits> #include <type_traits>
#include <utility> #include <utility>
#if defined(MAGIC_ENUM_CONFIG_FILE)
#include MAGIC_ENUM_CONFIG_FILE
#endif
#if !defined(MAGIC_ENUM_USING_ALIAS_OPTIONAL) #if !defined(MAGIC_ENUM_USING_ALIAS_OPTIONAL)
#include <optional> #include <optional>
#endif #endif