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Add member pointer stuff to meta lib

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This commit is contained in:
Steven Le Rouzic
2025-03-26 18:54:53 +01:00
parent 2c457c4275
commit e034efe8bd
2 changed files with 37 additions and 0 deletions
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11
asl/base/meta.hpp
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@ -194,6 +194,17 @@ template<typename R, typename... Args> struct _is_func_helper<R(Args...)> : true
template<typename T> concept is_func = _is_func_helper<tame_t<T>>::value;
template<typename T> struct _is_member_ptr_helper : false_type {};
template<typename C, typename T> struct _is_member_ptr_helper<T C::*> : true_type
{
static constexpr bool kIsFunc = is_func<T>;
};
template<typename T> concept is_member_ptr = _is_member_ptr_helper<un_cv_t<T>>::value;
template<typename T> concept is_member_func_ptr = is_member_ptr<T> && _is_member_ptr_helper<un_cv_t<T>>::kIsFunc;
template<typename T> concept is_member_data_ptr = is_member_ptr<T> && !_is_member_ptr_helper<un_cv_t<T>>::kIsFunc;
template<typename T> concept is_object = !is_void<T> && !is_ref<T> && !is_func<T>;
template<typename T> struct _array_helper : false_type { using type = T; };

26
asl/base/meta_tests.cpp
View File

@ -135,6 +135,12 @@ static_assert(!asl::is_ref<void>);
static_assert(!asl::is_ref<void()>);
static_assert(!asl::is_ref<void() const &&>);
struct MyClass
{
int data;
int fn(int x) { return x; } // NOLINT
};
static_assert(asl::is_ptr<int*>);
static_assert(asl::is_ptr<const int* const>);
static_assert(asl::is_ptr<const volatile int*>);
@ -142,6 +148,26 @@ static_assert(!asl::is_ptr<int>);
static_assert(!asl::is_ptr<void>);
static_assert(!asl::is_ptr<void()>);
static_assert(!asl::is_ptr<void() const &&>);
static_assert(!asl::is_ptr<int MyClass::*>);
static_assert(!asl::is_ptr<int (MyClass::*)(int)>);
static_assert(!asl::is_member_ptr<int*>);
static_assert(!asl::is_member_ptr<void()>);
static_assert(!asl::is_member_ptr<void() const &&>);
static_assert(asl::is_member_ptr<int MyClass::*>);
static_assert(asl::is_member_ptr<int (MyClass::*)(int)>);
static_assert(!asl::is_member_data_ptr<int*>);
static_assert(!asl::is_member_data_ptr<void()>);
static_assert(!asl::is_member_data_ptr<void() const &&>);
static_assert(asl::is_member_data_ptr<int MyClass::*>);
static_assert(!asl::is_member_data_ptr<int (MyClass::*)(int)>);
static_assert(!asl::is_member_func_ptr<int*>);
static_assert(!asl::is_member_func_ptr<void()>);
static_assert(!asl::is_member_func_ptr<void() const &&>);
static_assert(!asl::is_member_func_ptr<int MyClass::*>);
static_assert(asl::is_member_func_ptr<int (MyClass::*)(int)>);
static_assert(asl::same_as<int, asl::tame_t<int>>);
static_assert(asl::same_as<int(), asl::tame_t<int()>>);