4db94043cb
Files correlati : Commento : Spostamento in libraries delle librerie esterne di Campo per una maggiore pulizia e organizzazione git-svn-id: svn://10.65.10.50/branches/R_10_00@24150 c028cbd2-c16b-5b4b-a496-9718f37d4682
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) <2002-2009> <Jean-Philippe Barrette-LaPierre>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files
|
|
* (curlpp), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef UTILSPP_CLONEPTR_HPP
|
|
#define UTILSPP_CLONEPTR_HPP
|
|
|
|
#include <cassert>
|
|
#include <stdexcept>
|
|
|
|
namespace utilspp
|
|
{
|
|
// This class is meant to manage a pointer. This class will
|
|
// ensure that when we go out of scope, it will delete the
|
|
// pointer.
|
|
//
|
|
// However, contrary to the std::unique_ptr, instead of
|
|
// transfering the ownership on copy construction, it clones
|
|
// the content. This means that we can have STL containers
|
|
// that uses that class for managing the pointers.
|
|
//
|
|
// So, it means that the class we stores, needs a "clone"
|
|
// member.
|
|
template <typename T>
|
|
class clone_ptr
|
|
{
|
|
public:
|
|
clone_ptr() : value_(NULL) {}
|
|
|
|
// This constructor takes ownership of the pointer.
|
|
//
|
|
// Note that it isn't explicit. This might be a
|
|
// problem.
|
|
clone_ptr(T * value) : value_(value) {}
|
|
|
|
~clone_ptr() {if (value_) delete value_;}
|
|
|
|
// This is the default constructor that takes his
|
|
// value from cloning the content of the other
|
|
// clone_ptr.
|
|
clone_ptr(const clone_ptr & other)
|
|
{value_ = other->clone();}
|
|
|
|
T * operator->()
|
|
{
|
|
if (value_)
|
|
return value_;
|
|
|
|
throw std::runtime_error("using a null clone_ptr");
|
|
}
|
|
|
|
const T * operator->() const
|
|
{
|
|
assert(value_);
|
|
|
|
return value_;
|
|
}
|
|
|
|
T * get() { return value_; }
|
|
const T * get() const { return value_; }
|
|
|
|
// This just releases the pointer. It means that the
|
|
// pointer is no longer owned by the smart pointer.
|
|
T * release()
|
|
{
|
|
T * r = value_;
|
|
value_ = NULL;
|
|
|
|
return r;
|
|
}
|
|
|
|
private:
|
|
T * value_;
|
|
};
|
|
}
|
|
|
|
#endif
|