add enum stringification functionality from third party source

dGame/dUtilities/CMakeLists.txt

@@ -5,4 +5,5 @@ set(DGAME_DUTILITIES_SOURCES "BrickDatabase.cpp"
 	"Mail.cpp"
 	"Preconditions.cpp"
 	"SlashCommandHandler.cpp"
+	"StringifyEnums.cpp"
 	"VanityUtilities.cpp" PARENT_SCOPE)

dGame/dUtilities/StringifyEnums.cpp

@@ -0,0 +1,6 @@
+#define GENERATE_ENUM_STRINGS  // Start string generation
+
+#include <map>
+#include "eGameMessageType.h"
+
+#undef GENERATE_ENUM_STRINGS   // Stop string generation

dGame/dUtilities/StringifyEnums.h

@@ -0,0 +1,55 @@
+// Source - https://mariusbancila.ro/blog/2023/08/17/how-to-convert-an-enum-to-string-in-cpp/
+
+#pragma once
+
+#undef DECL_ENUM_ELEMENT
+#undef BEGIN_ENUM
+#undef END_ENUM
+
+#ifndef GENERATE_ENUM_STRINGS
+
+   #define DECLARE_ENUM_ELEMENT(element)  element,
+   #define BEGIN_ENUM(ENUM_NAME, TYPE)    typedef enum class tag##ENUM_NAME : TYPE {
+   #define BEGIN_ENUM_INT(ENUM_NAME)      BEGIN_ENUM(ENUM_NAME, int)
+   #define END_ENUM(ENUM_NAME)            } ENUM_NAME; const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME index);
+
+   #define DECLARE_ENUM_ELEMENT_WITH_VALUE(element, value)  element = value,
+   #define BEGIN_ENUM_WITH_VALUES(ENUM_NAME, TYPE)          BEGIN_ENUM(ENUM_NAME, TYPE)
+   #define BEGIN_ENUM_WITH_VALUES_INT(ENUM_NAME)            BEGIN_ENUM(ENUM_NAME, int)
+   #define END_ENUM_WITH_VALUES(ENUM_NAME, TYPE)                  END_ENUM(ENUM_NAME)
+
+#else
+   #define NO_VALUE                       "<none>"
+
+   #define DECLARE_ENUM_ELEMENT(element)     #element,
+
+   #define BEGIN_ENUM(ENUM_NAME, TYPE)       enum class tag##ENUM_NAME : TYPE;\
+const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME value) {\
+   std::size_t index = static_cast<std::size_t>(value);\
+   static const char* s_##ENUM_NAME[] = {
+
+   #define BEGIN_ENUM_INT(ENUM_NAME)         BEGIN_ENUM(ENUM_NAME, int)
+
+   #define END_ENUM(ENUM_NAME)               };\
+   static const std::size_t s_##ENUM_NAME_len = sizeof(s_##ENUM_NAME)/sizeof(const char*);\
+   if(index >=0 && index < s_##ENUM_NAME_len)\
+      return s_##ENUM_NAME[index]; \
+   return NO_VALUE;\
+}
+
+   #define DECLARE_ENUM_ELEMENT_WITH_VALUE(element, value) {value, #element},
+
+   #define BEGIN_ENUM_WITH_VALUES(ENUM_NAME, TYPE)          enum class tag##ENUM_NAME : TYPE;\
+const char* ENUM_NAME##_as_string(enum tag##ENUM_NAME value) {\
+   std::map<TYPE, const char*> sv = {
+
+   #define BEGIN_ENUM_WITH_VALUES_INT(ENUM_NAME)            BEGIN_ENUM_WITH_VALUES(ENUM_NAME, int)
+
+   #define END_ENUM_WITH_VALUES(ENUM_NAME, TYPE)                  };\
+   auto it = sv.find(static_cast<TYPE>(value));\
+   if (it != sv.end())\
+      return it->second;\
+   return NO_VALUE;\
+}
+
+#endif