Clang tidy doesn't work properly for static member variable - c++

Question

I am running clang-tidy for my project. Here are the relevant naming options from my .clang-tidy file:
- key: readability-identifier-naming.ClassMemberCase # e.g., int myClassMember_
value: camelBack
- key: readability-identifier-naming.ClassMemberSuffix # e.g., int myClassMember_
value: _
- key: readability-identifier-naming.GlobalConstantCase # e.g., int MyGlobalConstant (please don't make globals)
value: CamelCase
- key: readability-identifier-naming.IgnoreMainLikeFunctions # Doesn't apply clang checks to main() args
value: 1
- key: readability-identifier-naming.MacroDefinitionCase # e.g., #define MY_MACRO="PleaseDon'tUseMacrosAnywhere"
value: UPPER_CASE
- key: readability-identifier-naming.MacroDefinitionIgnoredRegexp
value: '^[A-Z]+(_[A-Z]+)*_$'
- key: readability-identifier-naming.MemberCase # e.g., int myMember_ = 42;
value: CamelCase
- key: readability-identifier-naming.MemberSuffix # e.g., int myMember_ = 42;
value: _
- key: readability-identifier-naming.ParameterCase # e.g., void MyFunction(int parameter, int anotherParam);
value: camelBack
- key: readability-identifier-naming.StaticConstantCase # e.g., static const std::string s_myStaticConstant = "I hope this works!"
value: camelBack
- key: readability-identifier-naming.StaticConstantPrefix # e.g., static const std::string s_myStaticConstant = "I hope this works!"
value: s_
- key: readability-identifier-naming.StaticVariableCase # e.g., static std::string s_myStaticVar = "I hope this works!"
value: camelBack
- key: readability-identifier-naming.StaticVariablePrefix # e.g., static std::string s_myStaticVar = "I hope this works!"
value: s_
- key: readability-identifier-naming.StructCase # e.g., struct MyStruct { ... };
value: CamelCase
- key: readability-identifier-naming.VariableCase # e.g., int myVariable = 10;
value: camelBack
Unfortunately, clang tidy turns my static class member variables into sMyVariable_ instead of s_myVariable_. It seems as if the options for class members are overriding the options for static variables:
warning: invalid case style for class member 's_myVariable_' [readability-identifier-naming]
int MyClass::s_myVariable_ = 1;
Is there any way to have the static naming rules prioritized over the member naming rules? Thanks!
Example code:
class MyClass{
static int s_myVariable_; // Clang-tidy doesn't like this
};

Answer 1

I had a hard time finding this in the documentation as well. It appears that static member variable readability-identifier-naming styles are defined with ClassMemberCase, ClassMemberPrefix, and ClassMemberSuffix.
For your desired formatting
class MyClass{
static int s_myVariable_; // Clang-tidy doesn't like this
};
the CheckOptions field of the .clang-tidy file would have the follwing key/values:
- { key: readability-identifier-naming.ClassMemberPrefix, value: s_ }
- { key: readability-identifier-naming.ClassMemberCase, value: camelBack }
- { key: readability-identifier-naming.ClassMemberSuffix, value: _ }