clang-format 如何缩进 c++ 中的 pragma?

Question

比如，

cpp#include <omp.h>
#include <cstdio>
int main()
{
#pragma omp parallel for
    for (int i = 0; i < 10; ++i)
    {
        puts("demo");
    }
    return 0;
}

希望用 clang-format 格式化成：

cpp#include <omp.h>
#include <cstdio>
int main()
{
    #pragma omp parallel for
    for (int i = 0; i < 10; ++i)
    {
        puts("demo");
    }
    return 0;
}

Answer 1

Clang-format is not currently supported.

For this somewhat special formatting requirement, clang-format provides a one-size-fits-all solution:

cpp#include <omp.h>
#include <cstdio>
int main() {
// clang-format off
  #pragma omp parallel for
  // clang-format on
  for (int i = 0; i < 10; ++i) {
    puts("demo");
  }
  return 0;
}

As shown above, between the // clang-format off and // clang-format on switches, you can keep whatever format you want, clang-format does not matter.

Answer 2

You won’t have to worry if you write this way

#include <omp.h>
#include <cstdio>
int main()
{
#   pragma omp parallel for
    ...
}