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//
// 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