// | |
// Boost.Pointer Container | |
// | |
// Copyright Thorsten Ottosen 2003-2005. Use, modification and | |
// distribution is subject to the Boost Software License, Version | |
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
// http://www.boost.org/LICENSE_1_0.txt) | |
// | |
// For more information, see http://www.boost.org/libs/ptr_container/ | |
// | |
#ifndef BOOST_PTR_CONTAINER_SCOPED_DELETER_HPP | |
#define BOOST_PTR_CONTAINER_SCOPED_DELETER_HPP | |
#if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
# pragma once | |
#endif | |
#include <iterator> | |
#include <cstddef> | |
#include <boost/scoped_array.hpp> | |
namespace boost | |
{ | |
namespace ptr_container_detail | |
{ | |
template< class T, class CloneAllocator > | |
class scoped_deleter | |
{ | |
typedef std::size_t size_type; | |
scoped_array<T*> ptrs_; | |
size_type stored_; | |
bool released_; | |
public: | |
scoped_deleter( T** a, size_type size ) | |
: ptrs_( a ), stored_( size ), released_( false ) | |
{ | |
BOOST_ASSERT( a ); | |
} | |
scoped_deleter( size_type size ) | |
: ptrs_( new T*[size] ), stored_( 0 ), | |
released_( false ) | |
{ | |
BOOST_ASSERT( size > 0 ); | |
} | |
scoped_deleter( size_type n, const T& x ) // strong | |
: ptrs_( new T*[n] ), stored_(0), | |
released_( false ) | |
{ | |
for( size_type i = 0; i != n; i++ ) | |
add( CloneAllocator::allocate_clone( &x ) ); | |
BOOST_ASSERT( stored_ > 0 ); | |
} | |
template< class InputIterator > | |
scoped_deleter ( InputIterator first, InputIterator last ) // strong | |
: ptrs_( new T*[ std::distance(first,last) ] ), | |
stored_(0), | |
released_( false ) | |
{ | |
for( ; first != last; ++first ) | |
add( CloneAllocator::allocate_clone_from_iterator( first ) ); | |
BOOST_ASSERT( stored_ > 0 ); | |
} | |
~scoped_deleter() | |
{ | |
if ( !released_ ) | |
{ | |
for( size_type i = 0u; i != stored_; ++i ) | |
CloneAllocator::deallocate_clone( ptrs_[i] ); | |
} | |
} | |
void add( T* t ) | |
{ | |
BOOST_ASSERT( ptrs_.get() != 0 ); | |
ptrs_[stored_] = t; | |
++stored_; | |
} | |
void release() | |
{ | |
released_ = true; | |
} | |
T** begin() | |
{ | |
BOOST_ASSERT( ptrs_.get() != 0 ); | |
return &ptrs_[0]; | |
} | |
T** end() | |
{ | |
BOOST_ASSERT( ptrs_.get() != 0 ); | |
return &ptrs_[stored_]; | |
} | |
}; // class 'scoped_deleter' | |
} | |
} | |
#endif |