| // |
| // Boost.Pointer Container |
| // |
| // Copyright Thorsten Ottosen 2008. 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_PTR_INSERTER_HPP |
| #define BOOST_PTR_CONTAINER_PTR_INSERTER_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| #pragma once |
| #endif |
| |
| #include <boost/config.hpp> |
| #include <iterator> |
| #include <memory> |
| |
| namespace boost |
| { |
| namespace ptr_container |
| { |
| template< class PtrContainer > |
| class ptr_back_insert_iterator; |
| |
| template< class PtrContainer > |
| class ptr_front_insert_iterator; |
| |
| template< class PtrContainer > |
| class ptr_insert_iterator; |
| |
| template< class PtrContainer > |
| ptr_back_insert_iterator<PtrContainer> |
| ptr_back_inserter( PtrContainer& cont ); |
| |
| template< class PtrContainer > |
| ptr_front_insert_iterator<PtrContainer> |
| ptr_front_inserter( PtrContainer& cont ); |
| |
| template< class PtrContainer > |
| ptr_insert_iterator<PtrContainer> |
| ptr_inserter( PtrContainer& cont, typename PtrContainer::iterator before ); |
| |
| ////////////////////////////////////////////////////////////////////////// |
| // Implementation |
| ////////////////////////////////////////////////////////////////////////// |
| |
| |
| template< class PtrContainer > |
| class ptr_back_insert_iterator : |
| public std::iterator<std::output_iterator_tag,void,void,void,void> |
| { |
| public: |
| typedef PtrContainer container_type; |
| |
| public: |
| explicit ptr_back_insert_iterator( PtrContainer& cont ) |
| : container(&cont) |
| { } |
| |
| ptr_back_insert_iterator& |
| operator=( typename PtrContainer::value_type r ) |
| { |
| typename PtrContainer::value_type obj = 0; |
| if( r != 0 ) |
| obj = container_type::clone_allocator_type::allocate_clone(*r); |
| |
| container->push_back( obj ); |
| return *this; |
| } |
| |
| template< class T > |
| ptr_back_insert_iterator& |
| operator=( std::auto_ptr<T> r ) |
| { |
| container->push_back( r ); |
| return *this; |
| } |
| |
| ptr_back_insert_iterator& |
| operator=( typename PtrContainer::const_reference r ) |
| { |
| container->push_back( container_type::clone_allocator_type:: |
| allocate_clone(r) ); |
| return *this; |
| } |
| |
| ptr_back_insert_iterator& operator*() |
| { |
| return *this; |
| } |
| |
| ptr_back_insert_iterator& operator++() |
| { |
| return *this; |
| } |
| |
| ptr_back_insert_iterator operator++(int) |
| { |
| return *this; |
| } |
| |
| protected: |
| PtrContainer* container; |
| }; |
| |
| |
| |
| template< class PtrContainer > |
| class ptr_front_insert_iterator : |
| public std::iterator<std::output_iterator_tag,void,void,void,void> |
| { |
| public: |
| typedef PtrContainer container_type; |
| |
| public: |
| explicit ptr_front_insert_iterator( PtrContainer& cont ) |
| : container(&cont) |
| { } |
| |
| ptr_front_insert_iterator& |
| operator=( typename PtrContainer::value_type r ) |
| { |
| typename PtrContainer::value_type obj = 0; |
| if( r != 0 ) |
| obj = container_type::clone_allocator_type::allocate_clone(*r); |
| |
| container->push_front( obj ); |
| return *this; |
| } |
| |
| template< class T > |
| ptr_front_insert_iterator& |
| operator=( std::auto_ptr<T> r ) |
| { |
| container->push_front( r ); |
| return *this; |
| } |
| |
| ptr_front_insert_iterator& |
| operator=( typename PtrContainer::const_reference r ) |
| { |
| container->push_front( container_type::clone_allocator_type:: |
| allocate_clone(r) ); |
| return *this; |
| } |
| |
| ptr_front_insert_iterator& operator*() |
| { |
| return *this; |
| } |
| |
| ptr_front_insert_iterator& operator++() |
| { |
| return *this; |
| } |
| |
| ptr_front_insert_iterator operator++(int) |
| { |
| return *this; |
| } |
| |
| protected: |
| PtrContainer* container; |
| }; |
| |
| |
| |
| template< class PtrContainer > |
| class ptr_insert_iterator : |
| public std::iterator<std::output_iterator_tag,void,void,void,void> |
| { |
| public: |
| typedef PtrContainer container_type; |
| |
| public: |
| ptr_insert_iterator( PtrContainer& cont, |
| typename PtrContainer::iterator before ) |
| : container(&cont), iter(before) |
| { } |
| |
| ptr_insert_iterator& |
| operator=( typename PtrContainer::value_type r ) |
| { |
| typename PtrContainer::value_type obj = 0; |
| if( r != 0 ) |
| obj = container_type::clone_allocator_type::allocate_clone(*r); |
| |
| iter = container->insert( iter, obj ); |
| return *this; |
| } |
| |
| template< class T > |
| ptr_insert_iterator& |
| operator=( std::auto_ptr<T> r ) |
| { |
| iter = container->insert( iter, r ); |
| return *this; |
| } |
| |
| ptr_insert_iterator& |
| operator=( typename PtrContainer::const_reference r ) |
| { |
| iter = container->insert( iter, container_type::clone_allocator_type:: |
| allocate_clone(r) ); |
| return *this; |
| } |
| |
| ptr_insert_iterator& operator*() |
| { |
| return *this; |
| } |
| |
| ptr_insert_iterator& operator++() |
| { |
| return *this; |
| } |
| |
| ptr_insert_iterator operator++(int) |
| { |
| return *this; |
| } |
| |
| protected: |
| PtrContainer* container; |
| typename PtrContainer::iterator iter; |
| }; |
| |
| template< class PtrContainer > |
| inline ptr_back_insert_iterator<PtrContainer> |
| ptr_back_inserter( PtrContainer& cont ) |
| { |
| return ptr_back_insert_iterator<PtrContainer>( cont ); |
| } |
| |
| template< class PtrContainer > |
| inline ptr_front_insert_iterator<PtrContainer> |
| ptr_front_inserter( PtrContainer& cont ) |
| { |
| return ptr_front_insert_iterator<PtrContainer>( cont ); |
| } |
| |
| template< class PtrContainer > |
| inline ptr_insert_iterator<PtrContainer> |
| ptr_inserter( PtrContainer& cont, |
| typename PtrContainer::iterator before ) |
| { |
| return ptr_insert_iterator<PtrContainer>( cont, before ); |
| } |
| |
| } // namespace 'ptr_container' |
| } // namespace 'boost' |
| |
| #endif |