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