/usr/include/camp/detail/issmartpointer.hpp is in libcamp-dev 0.8.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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**
** Copyright (C) 2009-2014 TEGESO/TEGESOFT and/or its subsidiary(-ies) and mother company.
** Contact: Tegesoft Information (contact@tegesoft.com)
**
** This file is part of the CAMP library.
**
** The MIT License (MIT)
**
** Copyright (C) 2009-2014 TEGESO/TEGESOFT and/or its subsidiary(-ies) and mother company.
**
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** of this software and associated documentation files (the "Software"), to deal
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#ifndef CAMP_DETAIL_ISSMARTPOINTER_HPP
#define CAMP_DETAIL_ISSMARTPOINTER_HPP
#include <camp/detail/yesnotype.hpp>
#ifndef Q_MOC_RUN
#include <boost/utility/enable_if.hpp>
#endif
#include <type_traits>
namespace camp
{
namespace detail
{
/**
* \brief Utility class which tells at compile-time if a type T is a smart pointer to a type U
*
* To detect a smart pointer type, we check using SFINAE if T implements an operator -> returning a U*
*/
template <typename T, typename U>
struct IsSmartPointer
{
enum {value = (!std::is_pointer<T>::value && !std::is_same<T, U>::value) };
};
} // namespace detail
} // namespace camp
namespace boost
{
/**
* \brief Specialization of boost::get_pointer for all smart pointer types (const version)
*
* This function is specialized for every type T for which IsSmartPointer<T> is true. It makes
* the stored value available for all boost algorithms (especially for boost::bind).
*/
template <template <typename> class T, typename U>
U* get_pointer(const T<U>& obj, typename enable_if<camp::detail::IsSmartPointer<T<U>, U> >::type* = 0)
{
return obj.get();
}
/**
* \brief Specialization of boost::get_pointer for all smart pointer types (non-const version)
*
* This function is specialized for every type T for which IsSmartPointer<T> is true. It makes
* the stored value available for all boost algorithms (especially for boost::bind).
*/
template <template <typename> class T, typename U>
U* get_pointer(T<U>& obj, typename enable_if<camp::detail::IsSmartPointer<T<U>, U> >::type* = 0)
{
return obj.get();
}
} // namespace boost
#endif // CAMP_DETAIL_ISSMARTPOINTER_HPP
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