You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
165 lines
3.7 KiB
165 lines
3.7 KiB
/* Copyright 2003-2008 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_HASH_INDEX_NODE_HPP |
|
#define BOOST_MULTI_INDEX_DETAIL_HASH_INDEX_NODE_HPP |
|
|
|
#if defined(_MSC_VER)&&(_MSC_VER>=1200) |
|
#pragma once |
|
#endif |
|
|
|
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ |
|
#include <boost/detail/allocator_utilities.hpp> |
|
#include <boost/multi_index/detail/prevent_eti.hpp> |
|
#include <functional> |
|
|
|
namespace boost{ |
|
|
|
namespace multi_index{ |
|
|
|
namespace detail{ |
|
|
|
/* singly-linked node for use by hashed_index */ |
|
|
|
template<typename Allocator> |
|
struct hashed_index_node_impl |
|
{ |
|
typedef typename prevent_eti< |
|
Allocator, |
|
typename boost::detail::allocator::rebind_to< |
|
Allocator,hashed_index_node_impl |
|
>::type |
|
>::type::pointer pointer; |
|
typedef typename prevent_eti< |
|
Allocator, |
|
typename boost::detail::allocator::rebind_to< |
|
Allocator,hashed_index_node_impl |
|
>::type |
|
>::type::const_pointer const_pointer; |
|
|
|
pointer& next(){return next_;} |
|
pointer next()const{return next_;} |
|
|
|
/* algorithmic stuff */ |
|
|
|
static void increment(pointer& x,pointer bbegin,pointer bend) |
|
{ |
|
std::less_equal<pointer> leq; |
|
|
|
x=x->next(); |
|
if(leq(bbegin,x)&&leq(x,bend)){ /* bucket node */ |
|
do{ |
|
++x; |
|
}while(x->next()==x); |
|
x=x->next(); |
|
} |
|
} |
|
|
|
static void link(pointer x,pointer pos) |
|
{ |
|
x->next()=pos->next(); |
|
pos->next()=x; |
|
}; |
|
|
|
static void unlink(pointer x) |
|
{ |
|
pointer y=x->next(); |
|
while(y->next()!=x){y=y->next();} |
|
y->next()=x->next(); |
|
} |
|
|
|
static pointer prev(pointer x) |
|
{ |
|
pointer y=x->next(); |
|
while(y->next()!=x){y=y->next();} |
|
return y; |
|
} |
|
|
|
static void unlink_next(pointer x) |
|
{ |
|
x->next()=x->next()->next(); |
|
} |
|
|
|
private: |
|
pointer next_; |
|
}; |
|
|
|
template<typename Super> |
|
struct hashed_index_node_trampoline: |
|
prevent_eti< |
|
Super, |
|
hashed_index_node_impl< |
|
typename boost::detail::allocator::rebind_to< |
|
typename Super::allocator_type, |
|
char |
|
>::type |
|
> |
|
>::type |
|
{ |
|
typedef typename prevent_eti< |
|
Super, |
|
hashed_index_node_impl< |
|
typename boost::detail::allocator::rebind_to< |
|
typename Super::allocator_type, |
|
char |
|
>::type |
|
> |
|
>::type impl_type; |
|
}; |
|
|
|
template<typename Super> |
|
struct hashed_index_node:Super,hashed_index_node_trampoline<Super> |
|
{ |
|
private: |
|
typedef hashed_index_node_trampoline<Super> trampoline; |
|
|
|
public: |
|
typedef typename trampoline::impl_type impl_type; |
|
typedef typename trampoline::pointer impl_pointer; |
|
typedef typename trampoline::const_pointer const_impl_pointer; |
|
|
|
impl_pointer impl() |
|
{ |
|
return static_cast<impl_pointer>( |
|
static_cast<impl_type*>(static_cast<trampoline*>(this))); |
|
} |
|
|
|
const_impl_pointer impl()const |
|
{ |
|
return static_cast<const_impl_pointer>( |
|
static_cast<const impl_type*>(static_cast<const trampoline*>(this))); |
|
} |
|
|
|
static hashed_index_node* from_impl(impl_pointer x) |
|
{ |
|
return static_cast<hashed_index_node*>( |
|
static_cast<trampoline*>(&*x)); |
|
} |
|
|
|
static const hashed_index_node* from_impl(const_impl_pointer x) |
|
{ |
|
return static_cast<const hashed_index_node*>( |
|
static_cast<const trampoline*>(&*x)); |
|
} |
|
|
|
static void increment( |
|
hashed_index_node*& x,impl_pointer bbegin,impl_pointer bend) |
|
{ |
|
impl_pointer xi=x->impl(); |
|
trampoline::increment(xi,bbegin,bend); |
|
x=from_impl(xi); |
|
} |
|
}; |
|
|
|
} /* namespace multi_index::detail */ |
|
|
|
} /* namespace multi_index */ |
|
|
|
} /* namespace boost */ |
|
|
|
#endif
|
|
|