specialization_helpers.h

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#pragma once
 
#include <memory>
#include <string>
#include <type_traits>
#ifndef _MSC_VER
#    include <cxxabi.h>
#endif
 
namespace knp::meta
{
 
template <class T>
std::string type_name()
{
    typedef typename std::remove_reference<T>::type TR;
    std::unique_ptr<char, void (*)(void*)> own(
#ifndef _MSC_VER
        abi::__cxa_demangle(typeid(TR).name(), nullptr, nullptr, nullptr),
#else
        nullptr,
#endif
        std::free);
    std::string result = own != nullptr ? own.get() : typeid(TR).name();
    if (std::is_const<TR>::value) result += " const";
    if (std::is_volatile<TR>::value) result += " volatile";
    if (std::is_lvalue_reference<T>::value)
        result += "&";
    else if (std::is_rvalue_reference<T>::value)
        result += "&&";
    return result;
}
 
 
template <class T, template <class...> class Template>
struct is_specialization : std::false_type
{
};
 
 
template <template <class...> class Template, class... Args>
struct is_specialization<Template<Args...>, Template> : std::true_type
{
};
 
}  // namespace knp::meta