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typemap: improve pointer support

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If stored object is a pointer, access dereferenced object directly via ->
This commit is contained in:
Nekotekina 2019-02-01 23:11:23 +03:00
parent 240ba39d16
commit 6c5d9fffaa
1 changed files with 22 additions and 1 deletions
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23
Utilities/typemap.h
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@ -128,6 +128,19 @@ namespace utils
static_assert(std::has_virtual_destructor_v<std::decay_t<T>>);
};
// Detect operator ->
template <typename T, typename = void>
struct typeinfo_pointer
{
static constexpr bool is_ptr = false;
};
template <typename T>
struct typeinfo_pointer<T, std::void_t<decltype(&std::decay_t<T>::operator->)>>
{
static constexpr bool is_ptr = true;
};
// Type information
struct typeinfo_base
{
@ -469,7 +482,15 @@ namespace utils
auto operator->() const noexcept
{
return get();
// Invoke object's operator -> if available
if constexpr (typeinfo_pointer<T>::is_ptr)
{
return get()->operator->();
}
else
{
return get();
}
}
// Release the lock and set invalid state