boost/multi_index/detail/index_base.hpp
/* Copyright 2003-2014 Joaquin M Lopez Munoz.
* Distributed under 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)
*
* See http://www.boost.org/libs/multi_index for library home page.
*/
#ifndef BOOST_MULTI_INDEX_DETAIL_INDEX_BASE_HPP
#define BOOST_MULTI_INDEX_DETAIL_INDEX_BASE_HPP
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/detail/allocator_utilities.hpp>
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/move/core.hpp>
#include <boost/move/utility.hpp>
#include <boost/mpl/vector.hpp>
#include <boost/multi_index/detail/copy_map.hpp>
#include <boost/multi_index/detail/do_not_copy_elements_tag.hpp>
#include <boost/multi_index/detail/node_type.hpp>
#include <boost/multi_index/detail/vartempl_support.hpp>
#include <boost/multi_index_container_fwd.hpp>
#include <boost/tuple/tuple.hpp>
#include <utility>
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
#include <boost/multi_index/detail/index_loader.hpp>
#include <boost/multi_index/detail/index_saver.hpp>
#endif
namespace boost{
namespace multi_index{
namespace detail{
/* The role of this class is threefold:
* - tops the linear hierarchy of indices.
* - terminates some cascading backbone function calls (insert_, etc.),
* - grants access to the backbone functions of the final
* multi_index_container class (for access restriction reasons, these
* cannot be called directly from the index classes.)
*/
struct lvalue_tag{};
struct rvalue_tag{};
struct emplaced_tag{};
template<typename Value,typename IndexSpecifierList,typename Allocator>
class index_base
{
protected:
typedef index_node_base<Value,Allocator> node_type;
typedef typename multi_index_node_type<
Value,IndexSpecifierList,Allocator>::type final_node_type;
typedef multi_index_container<
Value,IndexSpecifierList,Allocator> final_type;
typedef tuples::null_type ctor_args_list;
typedef typename
boost::detail::allocator::rebind_to<
Allocator,
typename Allocator::value_type
>::type final_allocator_type;
typedef mpl::vector0<> index_type_list;
typedef mpl::vector0<> iterator_type_list;
typedef mpl::vector0<> const_iterator_type_list;
typedef copy_map<
final_node_type,
final_allocator_type> copy_map_type;
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
typedef index_saver<
node_type,
final_allocator_type> index_saver_type;
typedef index_loader<
node_type,
final_node_type,
final_allocator_type> index_loader_type;
#endif
private:
typedef Value value_type;
protected:
explicit index_base(const ctor_args_list&,const Allocator&){}
index_base(
const index_base<Value,IndexSpecifierList,Allocator>&,
do_not_copy_elements_tag)
{}
void copy_(
const index_base<Value,IndexSpecifierList,Allocator>&,const copy_map_type&)
{}
final_node_type* insert_(const value_type& v,final_node_type*& x,lvalue_tag)
{
x=final().allocate_node();
BOOST_TRY{
boost::detail::allocator::construct(&x->value(),v);
}
BOOST_CATCH(...){
final().deallocate_node(x);
BOOST_RETHROW;
}
BOOST_CATCH_END
return x;
}
final_node_type* insert_(const value_type& v,final_node_type*& x,rvalue_tag)
{
x=final().allocate_node();
BOOST_TRY{
/* This shoud have used a modified, T&&-compatible version of
* boost::detail::allocator::construct, but
* <boost/detail/allocator_utilities.hpp> is too old and venerable to
* mess with; besides, it is a general internal utility and the imperfect
* perfect forwarding emulation of Boost.Move might break other libs.
*/
new (&x->value()) value_type(boost::move(const_cast<value_type&>(v)));
}
BOOST_CATCH(...){
final().deallocate_node(x);
BOOST_RETHROW;
}
BOOST_CATCH_END
return x;
}
final_node_type* insert_(const value_type&,final_node_type*& x,emplaced_tag)
{
return x;
}
final_node_type* insert_(
const value_type& v,node_type*,final_node_type*& x,lvalue_tag)
{
return insert_(v,x,lvalue_tag());
}
final_node_type* insert_(
const value_type& v,node_type*,final_node_type*& x,rvalue_tag)
{
return insert_(v,x,rvalue_tag());
}
final_node_type* insert_(
const value_type&,node_type*,final_node_type*& x,emplaced_tag)
{
return x;
}
void erase_(node_type* x)
{
boost::detail::allocator::destroy(&x->value());
}
void delete_node_(node_type* x)
{
boost::detail::allocator::destroy(&x->value());
}
void clear_(){}
void swap_(index_base<Value,IndexSpecifierList,Allocator>&){}
void swap_elements_(index_base<Value,IndexSpecifierList,Allocator>&){}
bool replace_(const value_type& v,node_type* x,lvalue_tag)
{
x->value()=v;
return true;
}
bool replace_(const value_type& v,node_type* x,rvalue_tag)
{
x->value()=boost::move(const_cast<value_type&>(v));
return true;
}
bool modify_(node_type*){return true;}
bool modify_rollback_(node_type*){return true;}
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
/* serialization */
template<typename Archive>
void save_(Archive&,const unsigned int,const index_saver_type&)const{}
template<typename Archive>
void load_(Archive&,const unsigned int,const index_loader_type&){}
#endif
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)
/* invariant stuff */
bool invariant_()const{return true;}
#endif
/* access to backbone memfuns of Final class */
final_type& final(){return *static_cast<final_type*>(this);}
const final_type& final()const{return *static_cast<const final_type*>(this);}
final_node_type* final_header()const{return final().header();}
bool final_empty_()const{return final().empty_();}
std::size_t final_size_()const{return final().size_();}
std::size_t final_max_size_()const{return final().max_size_();}
std::pair<final_node_type*,bool> final_insert_(const value_type& x)
{return final().insert_(x);}
std::pair<final_node_type*,bool> final_insert_rv_(const value_type& x)
{return final().insert_rv_(x);}
template<typename T>
std::pair<final_node_type*,bool> final_insert_ref_(const T& t)
{return final().insert_ref_(t);}
template<typename T>
std::pair<final_node_type*,bool> final_insert_ref_(T& t)
{return final().insert_ref_(t);}
template<BOOST_MULTI_INDEX_TEMPLATE_PARAM_PACK>
std::pair<final_node_type*,bool> final_emplace_(
BOOST_MULTI_INDEX_FUNCTION_PARAM_PACK)
{
return final().emplace_(BOOST_MULTI_INDEX_FORWARD_PARAM_PACK);
}
std::pair<final_node_type*,bool> final_insert_(
const value_type& x,final_node_type* position)
{return final().insert_(x,position);}
std::pair<final_node_type*,bool> final_insert_rv_(
const value_type& x,final_node_type* position)
{return final().insert_rv_(x,position);}
template<typename T>
std::pair<final_node_type*,bool> final_insert_ref_(
const T& t,final_node_type* position)
{return final().insert_ref_(t,position);}
template<typename T>
std::pair<final_node_type*,bool> final_insert_ref_(
T& t,final_node_type* position)
{return final().insert_ref_(t,position);}
template<BOOST_MULTI_INDEX_TEMPLATE_PARAM_PACK>
std::pair<final_node_type*,bool> final_emplace_hint_(
final_node_type* position,BOOST_MULTI_INDEX_FUNCTION_PARAM_PACK)
{
return final().emplace_hint_(
position,BOOST_MULTI_INDEX_FORWARD_PARAM_PACK);
}
void final_erase_(final_node_type* x){final().erase_(x);}
void final_delete_node_(final_node_type* x){final().delete_node_(x);}
void final_delete_all_nodes_(){final().delete_all_nodes_();}
void final_clear_(){final().clear_();}
void final_swap_(final_type& x){final().swap_(x);}
bool final_replace_(
const value_type& k,final_node_type* x)
{return final().replace_(k,x);}
bool final_replace_rv_(
const value_type& k,final_node_type* x)
{return final().replace_rv_(k,x);}
template<typename Modifier>
bool final_modify_(Modifier& mod,final_node_type* x)
{return final().modify_(mod,x);}
template<typename Modifier,typename Rollback>
bool final_modify_(Modifier& mod,Rollback& back,final_node_type* x)
{return final().modify_(mod,back,x);}
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)
void final_check_invariant_()const{final().check_invariant_();}
#endif
};
} /* namespace multi_index::detail */
} /* namespace multi_index */
} /* namespace boost */
#endif