[cfe-dev] Template instantiation in Clang checker

Valentin Tolmer via cfe-dev cfe-dev at lists.llvm.org
Tue Apr 16 08:46:06 PDT 2019


I'm working on a clang-tidy checker, and I want to be able to evaluate a
static condition on a class I'm matching, do you know if that's possible?
I have a templated integral_constant<bool, my_condition<T>>, and I want to
know the value for a given T. In more accurate details, here's the code:

In the application code:
typedef std::integral_constant<bool, sizeof(MyCondition<T>(
                                             static_cast<const T*>(0))) ==

In the clang checker:

bool IsTypeWithMyCondition(const clang::QualType &type,
                       const MatchFinder::MatchResult &result) {
  return !ast_matchers::match(
              type, *result.Context)

I would like to additionally match that my_great_condition<type> evaluates
to true. Do you know how I can achieve that?


Valentin Tolmer
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