src/cpptypesafeenum.h

@@ -13,6 +13,14 @@
 // These macros make it possible to define a typesafe enum with parse and
 // toString methods
 
+namespace typesafeenum {
+template<typename T>
+struct iterateEnum;
+
+template<typename T>
+struct parseEnum;
+}
+
 #define DECLARE_TYPESAFE_ENUM_HELPER1(name, ...) name __VA_ARGS__ ,
 #define DECLARE_TYPESAFE_ENUM_HELPER2(name, ...) case TheEnum::name: return #name;
 #define DECLARE_TYPESAFE_ENUM_HELPER3(name, ...) else if (str == CPP_STRINGIFY(name)) return TheEnum::name;
@@ -45,3 +53,25 @@
         using TheEnum = Name; \
         Values(DECLARE_TYPESAFE_ENUM_HELPER4) \
     }
+
+#define DECLARE_GLOBAL_TYPESAFE_ENUM(Name, Derivation, Values) \
+    DECLARE_TYPESAFE_ENUM(Name, Derivation, Values) \
+    namespace typesafeenum { \
+    template<> \
+    struct iterateEnum<Name> { \
+        template<typename T> \
+        static void iterate(T&&cb) \
+        { \
+            return iterate##Name(std::forward<T>(cb)); \
+        } \
+    }; \
+    template<> \
+    struct parseEnum<Name> { \
+        static std::expected<Name, std::string> parse(std::string_view str) \
+        { \
+            return parse##Name(str); \
+        } \
+    }; \
+    }
+
+using namespace typesafeenum;