DarkflameServer/dGame/dUtilities/StringifyEnums.h

56 lines
2.1 KiB
C++

// 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