/usr/include/ql/utilities/clone.hpp is in libquantlib0-dev 1.4-2+b1.
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) 2006 StatPro Italia srl
This file is part of QuantLib, a free-software/open-source library
for financial quantitative analysts and developers - http://quantlib.org/
QuantLib is free software: you can redistribute it and/or modify it
under the terms of the QuantLib license. You should have received a
copy of the license along with this program; if not, please email
<quantlib-dev@lists.sf.net>. The license is also available online at
<http://quantlib.org/license.shtml>.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the license for more details.
*/
/*! \file clone.hpp
\brief cloning proxy to an underlying object
*/
#ifndef quantlib_clone_hpp
#define quantlib_clone_hpp
#include <ql/errors.hpp>
#include <boost/scoped_ptr.hpp>
#include <algorithm>
#include <memory>
namespace QuantLib {
//! cloning proxy to an underlying object
/*! When copied, this class will make a clone of its underlying
object (which must provide a <tt>clone()</tt> method returning
a std::auto_ptr to a newly-allocated instance.)
*/
template <class T>
class Clone {
public:
Clone();
Clone(std::auto_ptr<T>);
Clone(const T&);
Clone(const Clone<T>&);
Clone<T>& operator=(const T&);
Clone<T>& operator=(const Clone<T>&);
T& operator*() const;
T* operator->() const;
bool empty() const;
void swap(Clone<T>& t);
private:
boost::scoped_ptr<T> ptr_;
};
/*! \relates Clone */
template <class T>
void swap(Clone<T>&, Clone<T>&);
// inline definitions
template <class T>
inline Clone<T>::Clone() {}
template <class T>
inline Clone<T>::Clone(std::auto_ptr<T> p)
: ptr_(p) {}
template <class T>
inline Clone<T>::Clone(const T& t)
: ptr_(t.clone().release()) {}
template <class T>
inline Clone<T>::Clone(const Clone<T>& t)
: ptr_(t.empty() ? (T*)(0) : t->clone().release()) {}
template <class T>
inline Clone<T>& Clone<T>::operator=(const T& t) {
ptr_.reset(t.clone().release());
return *this;
}
template <class T>
inline Clone<T>& Clone<T>::operator=(const Clone<T>& t) {
ptr_.reset(t.empty() ? (T*)(0) : t->clone().release());
return *this;
}
template <class T>
inline T& Clone<T>::operator*() const {
QL_REQUIRE(!this->empty(), "no underlying objects");
return *(this->ptr_);
}
template <class T>
inline T* Clone<T>::operator->() const {
return this->ptr_.get();
}
template <class T>
inline bool Clone<T>::empty() const {
return !ptr_;
}
template <class T>
inline void Clone<T>::swap(Clone<T>& t) {
this->ptr_.swap(t.ptr_);
}
template <class T>
inline void swap(Clone<T>& t, Clone<T>& u) {
t.swap(u);
}
}
#endif
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