Complex macros are not expanded #376
Description
Issue example: https://cppinsights.io/s/8931a54c
Input:
/* ... better-enums library code ... */
#include <cstdio>
#include <iostream>
BETTER_ENUM(Word, int, Hello, World)
int main()
{
#define ARR_SIZE 10
const char arr[ARR_SIZE]{2,4,6,8};
for(const char& c : arr)
{
printf("c=%c\n", c);
}
std::cout << (+Word::Hello)._to_string() << ", "
<< (+Word::World)._to_string() << "!"
<< std::endl;
}
Output:
/* ... better-enums library code ... */
#include <cstdio>
#include <iostream>
BETTER_ENUM(Word, int, Hello, World)
int main()
{
const char arr[10] = {2, 4, 6, 8, '\0', '\0', '\0', '\0', '\0', '\0'};
{
char const (&__range1)[10] = arr;
const char * __begin1 = __range1;
const char * __end1 = __range1 + 10L;
for(; __begin1 != __end1; ++__begin1)
{
const char & c = *__begin1;
printf("c=%c\n", static_cast<int>(c));
}
}
std::operator<<(std::operator<<(std::operator<<(std::operator<<(std::cout, (operator+(Word::Hello))._to_string()), ", "), (operator+(Word::World))._to_string()), "!").operator<<(std::endl);
}
I'm exploring a library better-enums and I'd like to see what the BETTER_ENUM macro looks like when it expanded for the compiler, but Cppinsights' macro expansion doesn't work for it, although it works fine for ARR_SIZE macro.
I guess because the BETTER_ENUM macro is too complex, will there be plans to support complex macro expansion?
And is there a way to directly include an online url like Godbold? So that users no longer need to add library code manually.
#include <https://raw.githubusercontent.com/aantron/better-enums/master/enum.h>
❤️ Thank you for the great site!