NagyDonat wrote:
I prototyped a "get the name of template argument as string" solution which is
sufficient for our use cases (where the checker family is a non-templated class
type) and works on all supported versions of all three compilers (GCC, clang,
MSVC) that are supported for LLVM compilation:
https://godbolt.org/z/8b9YGfvdG
```c++
#include <iostream>
#include <string>
class MyFancyCheckerFamily {};
template <class T>
std::string getTypeName() {
#ifndef _MSC_VER
std::string res = __PRETTY_FUNCTION__;
int start = res.find('='), end = res.find(';');
if (end == -1)
end = res.find(']');
if (start == -1 || end == -1)
return "unknown-checker-family"; // paranoia, should not happen
return res.substr(start + 2, end - start - 2);
#else
std::string res = __FUNCSIG__;
int start = res.find("<class "), end = res.find('>');
if (start == -1 || end == -1)
return "unknown-checker-family"; // paranoia, should not happen
return res.substr(start + 7, end - start - 7);
#endif
}
int main() {
std::cout << getTypeName<MyFancyCheckerFamily>() << std::endl;
return 0;
}
```
If I invoke this machinery from the registration functions of the checker
families (where each checker type is available as a template argument), then it
can "magically" ensure that `getTagDescription()` (i.e. the debug name) returns
the class name of the checker family as a string (and there is nothing to do
within the implementation of the checker family).
This is a bit ugly, because there is no standard way to stringify a type, so I
need to rely on the macros `__PRETTY_FUNCTION__` (GCC and clang with slightly
different content) / `__FUNCSIG__` (MSVC), but I don't think that there is a
cleaner solution that doesn't burden the classes derived from `CheckerFamily`
with any boilerplate (like overriding `getTagDescription()`).
@steakhal (or anybody else) What do you think about this?
https://github.com/llvm/llvm-project/pull/139256
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