[demangler] Simple function to print out a human readable name of a type.

demangle.h

#ifndef __LK_DEMANGLE_H__
#define __LK_DEMANGLE_H__

#if __has_include(<cxxabi.h>)
#include <cxxabi.h>
#include <cstdlib>
#include <memory>
#endif

#include <string>

template <typename T>
std::string demangle()
{
#if __has_include(<cxxabi.h>)
    int status = -1;
    std::unique_ptr<char, void(*)(void*)> demangled_name
    {
        abi::__cxa_demangle(typeid(std::remove_reference_t<T>).name(), NULL, NULL, &status),
        std::free
    };
    if(status == 0)
        return demangled_name.get();
    else
        return typeid(std::remove_reference_t<T>).name();
#else
    return typeid(std::remove_reference_t<T>).name();
#endif
}

#endif //__LK_DEMANGLE_H__