Chris@16: //
Chris@16: // Boost.Pointer Container
Chris@16: //
Chris@16: //  Copyright Thorsten Ottosen 2003-2005. Use, modification and
Chris@16: //  distribution is subject to the Boost Software License, Version
Chris@16: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // For more information, see http://www.boost.org/libs/ptr_container/
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_PTR_CONTAINER_SCOPED_DELETER_HPP
Chris@16: #define BOOST_PTR_CONTAINER_SCOPED_DELETER_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <iterator>
Chris@16: #include <cstddef>
Chris@16: #include <boost/scoped_array.hpp>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16:     namespace ptr_container_detail
Chris@16:     {
Chris@16:         template< class T, class CloneAllocator >
Chris@16:         class scoped_deleter
Chris@16:         {
Chris@16:             typedef std::size_t size_type;
Chris@16:             scoped_array<T*>  ptrs_;
Chris@16:             size_type         stored_; 
Chris@16:             bool              released_;
Chris@16:             
Chris@16:         public:
Chris@16:             scoped_deleter( T** a, size_type size ) 
Chris@16:                 : ptrs_( a ), stored_( size ), released_( false )
Chris@16:             { 
Chris@16:                 BOOST_ASSERT( a );
Chris@16:             }
Chris@16:             
Chris@16:             scoped_deleter( size_type size ) 
Chris@16:                 : ptrs_( new T*[size] ), stored_( 0 ), 
Chris@16:                  released_( false )
Chris@16:             {
Chris@16:                 BOOST_ASSERT( size > 0 );
Chris@16:             }
Chris@16: 
Chris@16: 
Chris@16:             
Chris@16:             scoped_deleter( size_type n, const T& x ) // strong
Chris@16:                 : ptrs_( new T*[n] ), stored_(0),
Chris@16:                   released_( false )
Chris@16:             {
Chris@16:                 for( size_type i = 0; i != n; i++ )
Chris@16:                     add( CloneAllocator::allocate_clone( &x ) );
Chris@16:                 BOOST_ASSERT( stored_ > 0 );
Chris@16:             }
Chris@16: 
Chris@16: 
Chris@16:             
Chris@16:             template< class InputIterator >
Chris@16:             scoped_deleter ( InputIterator first, InputIterator last  ) // strong
Chris@16:                 : ptrs_( new T*[ std::distance(first,last) ] ),
Chris@16:                   stored_(0),
Chris@16:                   released_( false )
Chris@16:             {
Chris@16:                 for( ; first != last; ++first )
Chris@16:                     add( CloneAllocator::allocate_clone_from_iterator( first ) );
Chris@16:                 BOOST_ASSERT( stored_ > 0 );
Chris@16:             }
Chris@16: 
Chris@16:             
Chris@16:             
Chris@16:             ~scoped_deleter()
Chris@16:             {
Chris@16:                 if ( !released_ )
Chris@16:                 {
Chris@16:                     for( size_type i = 0u; i != stored_; ++i )
Chris@16:                         CloneAllocator::deallocate_clone( ptrs_[i] ); 
Chris@16:                 }
Chris@16:             }
Chris@16:             
Chris@16:             
Chris@16:             
Chris@16:             void add( T* t )
Chris@16:             {
Chris@16:                 BOOST_ASSERT( ptrs_.get() != 0 );
Chris@16:                 ptrs_[stored_] = t;
Chris@16:                 ++stored_;
Chris@16:             }
Chris@16:             
Chris@16:             
Chris@16:             
Chris@16:             void release()
Chris@16:             {
Chris@16:                 released_ = true;
Chris@16:             }
Chris@16:             
Chris@16:             
Chris@16:             
Chris@16:             T** begin()
Chris@16:             {
Chris@16:                 BOOST_ASSERT( ptrs_.get() != 0 );
Chris@16:                 return &ptrs_[0];
Chris@16:             }
Chris@16:             
Chris@16:             
Chris@16:             
Chris@16:             T** end()
Chris@16:             {
Chris@16:                 BOOST_ASSERT( ptrs_.get() != 0 );
Chris@16:                 return &ptrs_[stored_];
Chris@16:             }
Chris@16:             
Chris@16:         }; // class 'scoped_deleter'
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: #endif