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YouCompleteMe/cpp/BoostParts/boost/multi_index/hashed_index.hpp
Strahinja Val Markovic 0c0ecc24c4 Using custom collection of Boost libs
2012-05-09 21:45:30 -07:00

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/* Copyright 2003-2011 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_HASHED_INDEX_HPP
#define BOOST_MULTI_INDEX_HASHED_INDEX_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 <algorithm>
#include <boost/call_traits.hpp>
#include <boost/detail/allocator_utilities.hpp>
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/foreach_fwd.hpp>
#include <boost/limits.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/push_front.hpp>
#include <boost/multi_index/detail/access_specifier.hpp>
#include <boost/multi_index/detail/auto_space.hpp>
#include <boost/multi_index/detail/bucket_array.hpp>
#include <boost/multi_index/detail/hash_index_iterator.hpp>
#include <boost/multi_index/detail/index_node_base.hpp>
#include <boost/multi_index/detail/modify_key_adaptor.hpp>
#include <boost/multi_index/detail/safe_ctr_proxy.hpp>
#include <boost/multi_index/detail/safe_mode.hpp>
#include <boost/multi_index/detail/scope_guard.hpp>
#include <boost/multi_index/hashed_index_fwd.hpp>
#include <boost/tuple/tuple.hpp>
#include <cstddef>
#include <functional>
#include <utility>
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
#include <boost/serialization/nvp.hpp>
#endif
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)
#define BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT \
detail::scope_guard BOOST_JOIN(check_invariant_,__LINE__)= \
detail::make_obj_guard(*this,&hashed_index::check_invariant_); \
BOOST_JOIN(check_invariant_,__LINE__).touch();
#else
#define BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT
#endif
namespace boost{
namespace multi_index{
namespace detail{
/* hashed_index adds a layer of hashed indexing to a given Super */
/* Most of the implementation of unique and non-unique indices is
* shared. We tell from one another on instantiation time by using
* these tags.
*/
struct hashed_unique_tag{};
struct hashed_non_unique_tag{};
template<
typename KeyFromValue,typename Hash,typename Pred,
typename SuperMeta,typename TagList,typename Category
>
class hashed_index:
BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS SuperMeta::type
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
,public safe_ctr_proxy_impl<
hashed_index_iterator<
hashed_index_node<typename SuperMeta::type::node_type>,
bucket_array<typename SuperMeta::type::final_allocator_type> >,
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category> >
#else
,public safe_mode::safe_container<
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category> >
#endif
#endif
{
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)&&\
BOOST_WORKAROUND(__MWERKS__,<=0x3003)
/* The "ISO C++ Template Parser" option in CW8.3 has a problem with the
* lifetime of const references bound to temporaries --precisely what
* scopeguards are.
*/
#pragma parse_mfunc_templ off
#endif
typedef typename SuperMeta::type super;
protected:
typedef hashed_index_node<
typename super::node_type> node_type;
private:
typedef typename node_type::impl_type node_impl_type;
typedef typename node_impl_type::pointer node_impl_pointer;
typedef bucket_array<
typename super::final_allocator_type> bucket_array_type;
public:
/* types */
typedef typename KeyFromValue::result_type key_type;
typedef typename node_type::value_type value_type;
typedef KeyFromValue key_from_value;
typedef Hash hasher;
typedef Pred key_equal;
typedef tuple<std::size_t,
key_from_value,hasher,key_equal> ctor_args;
typedef typename super::final_allocator_type allocator_type;
typedef typename allocator_type::pointer pointer;
typedef typename allocator_type::const_pointer const_pointer;
typedef typename allocator_type::reference reference;
typedef typename allocator_type::const_reference const_reference;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
typedef safe_mode::safe_iterator<
hashed_index_iterator<
node_type,bucket_array_type>,
safe_ctr_proxy<
hashed_index_iterator<
node_type,bucket_array_type> > > iterator;
#else
typedef safe_mode::safe_iterator<
hashed_index_iterator<
node_type,bucket_array_type>,
hashed_index> iterator;
#endif
#else
typedef hashed_index_iterator<
node_type,bucket_array_type> iterator;
#endif
typedef iterator const_iterator;
typedef iterator local_iterator;
typedef const_iterator const_local_iterator;
typedef TagList tag_list;
protected:
typedef typename super::final_node_type final_node_type;
typedef tuples::cons<
ctor_args,
typename super::ctor_args_list> ctor_args_list;
typedef typename mpl::push_front<
typename super::index_type_list,
hashed_index>::type index_type_list;
typedef typename mpl::push_front<
typename super::iterator_type_list,
iterator>::type iterator_type_list;
typedef typename mpl::push_front<
typename super::const_iterator_type_list,
const_iterator>::type const_iterator_type_list;
typedef typename super::copy_map_type copy_map_type;
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
typedef typename super::index_saver_type index_saver_type;
typedef typename super::index_loader_type index_loader_type;
#endif
private:
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
typedef safe_ctr_proxy_impl<
hashed_index_iterator<
node_type,bucket_array_type>,
hashed_index> safe_super;
#else
typedef safe_mode::safe_container<
hashed_index> safe_super;
#endif
#endif
typedef typename call_traits<value_type>::param_type value_param_type;
typedef typename call_traits<
key_type>::param_type key_param_type;
public:
/* construct/destroy/copy
* Default and copy ctors are in the protected section as indices are
* not supposed to be created on their own. No range ctor either.
*/
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& operator=(
const hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x)
{
this->final()=x.final();
return *this;
}
allocator_type get_allocator()const
{
return this->final().get_allocator();
}
/* size and capacity */
bool empty()const{return this->final_empty_();}
size_type size()const{return this->final_size_();}
size_type max_size()const{return this->final_max_size_();}
/* iterators */
iterator begin()
{
return make_iterator(
node_type::from_impl(buckets.at(first_bucket)->next()));
}
const_iterator begin()const
{
return make_iterator(
node_type::from_impl(buckets.at(first_bucket)->next()));
}
iterator end(){return make_iterator(header());}
const_iterator end()const{return make_iterator(header());}
const_iterator cbegin()const{return begin();}
const_iterator cend()const{return end();}
iterator iterator_to(const value_type& x)
{
return make_iterator(node_from_value<node_type>(&x));
}
const_iterator iterator_to(const value_type& x)const
{
return make_iterator(node_from_value<node_type>(&x));
}
/* modifiers */
std::pair<iterator,bool> insert(value_param_type x)
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
std::pair<final_node_type*,bool> p=this->final_insert_(x);
return std::pair<iterator,bool>(make_iterator(p.first),p.second);
}
iterator insert(iterator position,value_param_type x)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
std::pair<final_node_type*,bool> p=this->final_insert_(
x,static_cast<final_node_type*>(position.get_node()));
return make_iterator(p.first);
}
template<typename InputIterator>
void insert(InputIterator first,InputIterator last)
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
iterator hint=end();
for(;first!=last;++first)hint=insert(hint,*first);
}
iterator erase(iterator position)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
this->final_erase_(static_cast<final_node_type*>(position++.get_node()));
return position;
}
size_type erase(key_param_type k)
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
size_type s=0;
std::size_t buc=buckets.position(hash(k));
node_impl_pointer x=buckets.at(buc);
node_impl_pointer y=x->next();
while(y!=x){
if(eq(k,key(node_type::from_impl(y)->value()))){
bool b;
do{
node_impl_pointer z=y->next();
b=z!=x&&eq(
key(node_type::from_impl(y)->value()),
key(node_type::from_impl(z)->value()));
this->final_erase_(
static_cast<final_node_type*>(node_type::from_impl(y)));
y=z;
++s;
}while(b);
break;
}
y=y->next();
}
return s;
}
iterator erase(iterator first,iterator last)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(first);
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(last);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(first,*this);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(last,*this);
BOOST_MULTI_INDEX_CHECK_VALID_RANGE(first,last);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
while(first!=last){
first=erase(first);
}
return first;
}
bool replace(iterator position,value_param_type x)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
return this->final_replace_(
x,static_cast<final_node_type*>(position.get_node()));
}
template<typename Modifier>
bool modify(iterator position,Modifier mod)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
/* MSVC++ 6.0 optimizer on safe mode code chokes if this
* this is not added. Left it for all compilers as it does no
* harm.
*/
position.detach();
#endif
return this->final_modify_(
mod,static_cast<final_node_type*>(position.get_node()));
}
template<typename Modifier,typename Rollback>
bool modify(iterator position,Modifier mod,Rollback back)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
/* MSVC++ 6.0 optimizer on safe mode code chokes if this
* this is not added. Left it for all compilers as it does no
* harm.
*/
position.detach();
#endif
return this->final_modify_(
mod,back,static_cast<final_node_type*>(position.get_node()));
}
template<typename Modifier>
bool modify_key(iterator position,Modifier mod)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
return modify(
position,modify_key_adaptor<Modifier,value_type,KeyFromValue>(mod,key));
}
template<typename Modifier,typename Rollback>
bool modify_key(iterator position,Modifier mod,Rollback back)
{
BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_DEREFERENCEABLE_ITERATOR(position);
BOOST_MULTI_INDEX_CHECK_IS_OWNER(position,*this);
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
return modify(
position,
modify_key_adaptor<Modifier,value_type,KeyFromValue>(mod,key),
modify_key_adaptor<Rollback,value_type,KeyFromValue>(back,key));
}
void clear()
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
this->final_clear_();
}
void swap(hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x)
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
this->final_swap_(x.final());
}
/* observers */
key_from_value key_extractor()const{return key;}
hasher hash_function()const{return hash;}
key_equal key_eq()const{return eq;}
/* lookup */
/* Internally, these ops rely on const_iterator being the same
* type as iterator.
*/
template<typename CompatibleKey>
iterator find(const CompatibleKey& k)const
{
return find(k,hash,eq);
}
template<
typename CompatibleKey,typename CompatibleHash,typename CompatiblePred
>
iterator find(
const CompatibleKey& k,
const CompatibleHash& hash,const CompatiblePred& eq)const
{
std::size_t buc=buckets.position(hash(k));
node_impl_pointer x=buckets.at(buc);
node_impl_pointer y=x->next();
while(y!=x){
if(eq(k,key(node_type::from_impl(y)->value()))){
return make_iterator(node_type::from_impl(y));
}
y=y->next();
}
return end();
}
template<typename CompatibleKey>
size_type count(const CompatibleKey& k)const
{
return count(k,hash,eq);
}
template<
typename CompatibleKey,typename CompatibleHash,typename CompatiblePred
>
size_type count(
const CompatibleKey& k,
const CompatibleHash& hash,const CompatiblePred& eq)const
{
size_type res=0;
std::size_t buc=buckets.position(hash(k));
node_impl_pointer x=buckets.at(buc);
node_impl_pointer y=x->next();
while(y!=x){
if(eq(k,key(node_type::from_impl(y)->value()))){
do{
++res;
y=y->next();
}while(y!=x&&eq(k,key(node_type::from_impl(y)->value())));
break;
}
y=y->next();
}
return res;
}
template<typename CompatibleKey>
std::pair<iterator,iterator> equal_range(const CompatibleKey& k)const
{
return equal_range(k,hash,eq);
}
template<
typename CompatibleKey,typename CompatibleHash,typename CompatiblePred
>
std::pair<iterator,iterator> equal_range(
const CompatibleKey& k,
const CompatibleHash& hash,const CompatiblePred& eq)const
{
std::size_t buc=buckets.position(hash(k));
node_impl_pointer x=buckets.at(buc);
node_impl_pointer y=x->next();
while(y!=x){
if(eq(k,key(node_type::from_impl(y)->value()))){
node_impl_pointer y0=y;
do{
y=y->next();
}while(y!=x&&eq(k,key(node_type::from_impl(y)->value())));
if(y==x){
do{
++y;
}while(y==y->next());
y=y->next();
}
return std::pair<iterator,iterator>(
make_iterator(node_type::from_impl(y0)),
make_iterator(node_type::from_impl(y)));
}
y=y->next();
}
return std::pair<iterator,iterator>(end(),end());
}
/* bucket interface */
size_type bucket_count()const{return buckets.size();}
size_type max_bucket_count()const{return static_cast<size_type>(-1);}
size_type bucket_size(size_type n)const
{
size_type res=0;
node_impl_pointer x=buckets.at(n);
node_impl_pointer y=x->next();
while(y!=x){
++res;
y=y->next();
}
return res;
}
size_type bucket(key_param_type k)const
{
return buckets.position(hash(k));
}
local_iterator begin(size_type n)
{
return const_cast<const hashed_index*>(this)->begin(n);
}
const_local_iterator begin(size_type n)const
{
node_impl_pointer x=buckets.at(n);
node_impl_pointer y=x->next();
if(y==x)return end();
return make_iterator(node_type::from_impl(y));
}
local_iterator end(size_type n)
{
return const_cast<const hashed_index*>(this)->end(n);
}
const_local_iterator end(size_type n)const
{
node_impl_pointer x=buckets.at(n);
if(x==x->next())return end();
do{
++x;
}while(x==x->next());
return make_iterator(node_type::from_impl(x->next()));
}
const_local_iterator cbegin(size_type n)const{return begin(n);}
const_local_iterator cend(size_type n)const{return end(n);}
local_iterator local_iterator_to(const value_type& x)
{
return make_iterator(node_from_value<node_type>(&x));
}
const_local_iterator local_iterator_to(const value_type& x)const
{
return make_iterator(node_from_value<node_type>(&x));
}
/* hash policy */
float load_factor()const{return static_cast<float>(size())/bucket_count();}
float max_load_factor()const{return mlf;}
void max_load_factor(float z){mlf=z;calculate_max_load();}
void rehash(size_type n)
{
BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
if(size()<max_load&&n<=bucket_count())return;
size_type bc =(std::numeric_limits<size_type>::max)();
float fbc=static_cast<float>(1+size()/mlf);
if(bc>fbc){
bc=static_cast<size_type>(fbc);
if(bc<n)bc=n;
}
unchecked_rehash(bc);
}
BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS:
hashed_index(const ctor_args_list& args_list,const allocator_type& al):
super(args_list.get_tail(),al),
key(tuples::get<1>(args_list.get_head())),
hash(tuples::get<2>(args_list.get_head())),
eq(tuples::get<3>(args_list.get_head())),
buckets(al,header()->impl(),tuples::get<0>(args_list.get_head())),
mlf(1.0f),
first_bucket(buckets.size())
{
calculate_max_load();
}
hashed_index(
const hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x):
super(x),
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
safe_super(),
#endif
key(x.key),
hash(x.hash),
eq(x.eq),
buckets(x.get_allocator(),header()->impl(),x.buckets.size()),
mlf(x.mlf),
max_load(x.max_load),
first_bucket(x.first_bucket)
{
/* Copy ctor just takes the internal configuration objects from x. The rest
* is done in subsequent call to copy_().
*/
}
~hashed_index()
{
/* the container is guaranteed to be empty by now */
}
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
iterator make_iterator(node_type* node)
{
return iterator(node,&buckets,this);
}
const_iterator make_iterator(node_type* node)const
{
return const_iterator(
node,
&const_cast<bucket_array_type&>(buckets),
const_cast<hashed_index*>(this));
}
#else
iterator make_iterator(node_type* node)
{
return iterator(node,&buckets);
}
const_iterator make_iterator(node_type* node)const
{
return const_iterator(node,&const_cast<bucket_array_type&>(buckets));
}
#endif
void copy_(
const hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x,
const copy_map_type& map)
{
for(node_impl_pointer begin_org=x.buckets.begin(),
begin_cpy=buckets.begin(),
end_org=x.buckets.end();
begin_org!=end_org;++begin_org,++begin_cpy){
node_impl_pointer next_org=begin_org->next();
node_impl_pointer cpy=begin_cpy;
while(next_org!=begin_org){
cpy->next()=
static_cast<node_type*>(
map.find(
static_cast<final_node_type*>(
node_type::from_impl(next_org))))->impl();
next_org=next_org->next();
cpy=cpy->next();
}
cpy->next()=begin_cpy;
}
super::copy_(x,map);
}
node_type* insert_(value_param_type v,node_type* x)
{
reserve(size()+1);
std::size_t buc=find_bucket(v);
node_impl_pointer pos=buckets.at(buc);
if(!link_point(v,pos,Category()))return node_type::from_impl(pos);
node_type* res=static_cast<node_type*>(super::insert_(v,x));
if(res==x){
link(x,pos);
if(first_bucket>buc)first_bucket=buc;
}
return res;
}
node_type* insert_(value_param_type v,node_type* position,node_type* x)
{
reserve(size()+1);
std::size_t buc=find_bucket(v);
node_impl_pointer pos=buckets.at(buc);
if(!link_point(v,pos,Category()))return node_type::from_impl(pos);
node_type* res=static_cast<node_type*>(super::insert_(v,position,x));
if(res==x){
link(x,pos);
if(first_bucket>buc)first_bucket=buc;
}
return res;
}
void erase_(node_type* x)
{
unlink(x);
first_bucket=buckets.first_nonempty(first_bucket);
super::erase_(x);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
detach_iterators(x);
#endif
}
void delete_all_nodes_()
{
for(node_impl_pointer x=buckets.begin(),x_end=buckets.end();
x!=x_end;++x){
node_impl_pointer y=x->next();
while(y!=x){
node_impl_pointer z=y->next();
this->final_delete_node_(
static_cast<final_node_type*>(node_type::from_impl(y)));
y=z;
}
}
}
void clear_()
{
super::clear_();
buckets.clear();
first_bucket=buckets.size();
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
safe_super::detach_dereferenceable_iterators();
#endif
}
void swap_(
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x)
{
std::swap(key,x.key);
std::swap(hash,x.hash);
std::swap(eq,x.eq);
buckets.swap(x.buckets);
std::swap(mlf,x.mlf);
std::swap(max_load,x.max_load);
std::swap(first_bucket,x.first_bucket);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
safe_super::swap(x);
#endif
super::swap_(x);
}
bool replace_(value_param_type v,node_type* x)
{
if(eq(key(v),key(x->value()))){
return super::replace_(v,x);
}
node_impl_pointer y=prev(x);
unlink_next(y);
BOOST_TRY{
std::size_t buc=find_bucket(v);
node_impl_pointer pos=buckets.at(buc);
if(link_point(v,pos,Category())&&super::replace_(v,x)){
link(x,pos);
if(first_bucket>buc){
first_bucket=buc;
}
else if(first_bucket<buc){
first_bucket=buckets.first_nonempty(first_bucket);
}
return true;
}
link(x,y);
return false;
}
BOOST_CATCH(...){
link(x,y);
BOOST_RETHROW;
}
BOOST_CATCH_END
}
bool modify_(node_type* x)
{
std::size_t buc;
bool b;
BOOST_TRY{
buc=find_bucket(x->value());
b=in_place(x->impl(),key(x->value()),buc,Category());
}
BOOST_CATCH(...){
erase_(x);
BOOST_RETHROW;
}
BOOST_CATCH_END
if(!b){
unlink(x);
BOOST_TRY{
node_impl_pointer pos=buckets.at(buc);
if(!link_point(x->value(),pos,Category())){
first_bucket=buckets.first_nonempty(first_bucket);
super::erase_(x);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
detach_iterators(x);
#endif
return false;
}
link(x,pos);
if(first_bucket>buc){
first_bucket=buc;
}
else if(first_bucket<buc){
first_bucket=buckets.first_nonempty(first_bucket);
}
}
BOOST_CATCH(...){
first_bucket=buckets.first_nonempty(first_bucket);
super::erase_(x);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
detach_iterators(x);
#endif
BOOST_RETHROW;
}
BOOST_CATCH_END
}
BOOST_TRY{
if(!super::modify_(x)){
unlink(x);
first_bucket=buckets.first_nonempty(first_bucket);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
detach_iterators(x);
#endif
return false;
}
else return true;
}
BOOST_CATCH(...){
unlink(x);
first_bucket=buckets.first_nonempty(first_bucket);
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
detach_iterators(x);
#endif
BOOST_RETHROW;
}
BOOST_CATCH_END
}
bool modify_rollback_(node_type* x)
{
std::size_t buc=find_bucket(x->value());
if(in_place(x->impl(),key(x->value()),buc,Category())){
return super::modify_rollback_(x);
}
node_impl_pointer y=prev(x);
unlink_next(y);
BOOST_TRY{
node_impl_pointer pos=buckets.at(buc);
if(link_point(x->value(),pos,Category())&&super::modify_rollback_(x)){
link(x,pos);
if(first_bucket>buc){
first_bucket=buc;
}
else if(first_bucket<buc){
first_bucket=buckets.first_nonempty(first_bucket);
}
return true;
}
link(x,y);
return false;
}
BOOST_CATCH(...){
link(x,y);
BOOST_RETHROW;
}
BOOST_CATCH_END
}
#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)
/* serialization */
template<typename Archive>
void save_(
Archive& ar,const unsigned int version,const index_saver_type& sm)const
{
ar<<serialization::make_nvp("position",buckets);
super::save_(ar,version,sm);
}
template<typename Archive>
void load_(Archive& ar,const unsigned int version,const index_loader_type& lm)
{
ar>>serialization::make_nvp("position",buckets);
super::load_(ar,version,lm);
}
#endif
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)
/* invariant stuff */
bool invariant_()const
{
if(size()==0||begin()==end()){
if(size()!=0||begin()!=end())return false;
}
else{
size_type s0=0;
for(const_iterator it=begin(),it_end=end();it!=it_end;++it,++s0){}
if(s0!=size())return false;
size_type s1=0;
for(size_type buc=0;buc<bucket_count();++buc){
size_type ss1=0;
for(const_local_iterator it=begin(buc),it_end=end(buc);
it!=it_end;++it,++ss1){
if(find_bucket(*it)!=buc)return false;
}
if(ss1!=bucket_size(buc))return false;
s1+=ss1;
}
if(s1!=size())return false;
}
if(first_bucket!=buckets.first_nonempty(0))return false;
return super::invariant_();
}
/* This forwarding function eases things for the boost::mem_fn construct
* in BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT. Actually,
* final_check_invariant is already an inherited member function of index.
*/
void check_invariant_()const{this->final_check_invariant_();}
#endif
private:
node_type* header()const{return this->final_header();}
std::size_t find_bucket(value_param_type v)const
{
return bucket(key(v));
}
bool link_point(
value_param_type v,node_impl_pointer& pos,hashed_unique_tag)
{
node_impl_pointer x=pos->next();
while(x!=pos){
if(eq(key(v),key(node_type::from_impl(x)->value()))){
pos=x;
return false;
}
x=x->next();
}
return true;
}
bool link_point(
value_param_type v,node_impl_pointer& pos,hashed_non_unique_tag)
{
node_impl_pointer prev=pos;
node_impl_pointer x=pos->next();
while(x!=pos){
if(eq(key(v),key(node_type::from_impl(x)->value()))){
pos=prev;
return true;
}
prev=x;
x=x->next();
}
return true;
}
static void link(node_type* x,node_impl_pointer pos)
{
node_impl_type::link(x->impl(),pos);
};
static void link(node_impl_pointer x,node_impl_pointer pos)
{
node_impl_type::link(x,pos);
};
static void unlink(node_type* x)
{
node_impl_type::unlink(x->impl());
};
static node_impl_pointer prev(node_type* x)
{
return node_impl_type::prev(x->impl());
}
static node_impl_pointer prev_from(node_type* x,node_impl_pointer y)
{
return node_impl_type::prev_from(x->impl(),y);
}
static void unlink_next(node_impl_pointer x)
{
node_impl_type::unlink_next(x);
}
void calculate_max_load()
{
float fml=static_cast<float>(mlf*bucket_count());
max_load=(std::numeric_limits<size_type>::max)();
if(max_load>fml)max_load=static_cast<size_type>(fml);
}
void reserve(size_type n)
{
if(n>max_load){
size_type bc =(std::numeric_limits<size_type>::max)();
float fbc=static_cast<float>(1+n/mlf);
if(bc>fbc)bc =static_cast<size_type>(fbc);
unchecked_rehash(bc);
}
}
void unchecked_rehash(size_type n)
{
bucket_array_type buckets1(get_allocator(),header()->impl(),n);
auto_space<std::size_t,allocator_type> hashes(get_allocator(),size());
std::size_t i=0;
node_impl_pointer x=buckets.begin();
node_impl_pointer x_end=buckets.end();
for(;x!=x_end;++x){
node_impl_pointer y=x->next();
while(y!=x){
hashes.data()[i++]=hash(key(node_type::from_impl(y)->value()));
y=y->next();
}
}
i=0;
x=buckets.begin();
for(;x!=x_end;++x){
node_impl_pointer y=x->next();
while(y!=x){
node_impl_pointer z=y->next();
std::size_t buc1=buckets1.position(hashes.data()[i++]);
node_impl_pointer x1=buckets1.at(buc1);
link(y,x1);
y=z;
}
}
buckets.swap(buckets1);
calculate_max_load();
first_bucket=buckets.first_nonempty(0);
}
bool in_place(
node_impl_pointer x,key_param_type k,std::size_t buc,
hashed_unique_tag)const
{
std::less_equal<node_impl_pointer> leq;
node_impl_pointer bbegin=buckets.begin();
node_impl_pointer bend=buckets.end();
node_impl_pointer pbuc=x->next();
while(!leq(bbegin,pbuc)||!leq(pbuc,bend))pbuc=pbuc->next();
if(buc!=static_cast<std::size_t>(pbuc-bbegin))return false;
node_impl_pointer y=x;
while(y->next()!=x){
y=y->next();
if(y==pbuc)continue;
if(eq(k,key(node_type::from_impl(y)->value())))return false;
}
return true;
}
bool in_place(
node_impl_pointer x,key_param_type k,std::size_t buc,
hashed_non_unique_tag)const
{
std::less_equal<node_impl_pointer> leq;
node_impl_pointer bbegin=buckets.begin();
node_impl_pointer bend=buckets.end();
node_impl_pointer pbuc=x->next();
while(!leq(bbegin,pbuc)||!leq(pbuc,bend))pbuc=pbuc->next();
if(buc!=static_cast<std::size_t>(pbuc-bbegin))return false;
node_impl_pointer y=x->next();
if(y!=pbuc){
if(eq(k,key(node_type::from_impl(y)->value()))){
/* adjacent to equivalent element -> in place */
return true;
}
else{
y=y->next();
while(y!=pbuc){
if(eq(k,key(node_type::from_impl(y)->value())))return false;
y=y->next();
}
}
}
while(y->next()!=x){
y=y->next();
if(eq(k,key(node_type::from_impl(y)->value()))){
while(y->next()!=x){
y=y->next();
if(!eq(k,key(node_type::from_impl(y)->value())))return false;
}
/* after a group of equivalent elements --> in place */
return true;
}
}
return true;
}
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
void detach_iterators(node_type* x)
{
iterator it=make_iterator(x);
safe_mode::detach_equivalent_iterators(it);
}
#endif
key_from_value key;
hasher hash;
key_equal eq;
bucket_array_type buckets;
float mlf;
size_type max_load;
std::size_t first_bucket;
#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)&&\
BOOST_WORKAROUND(__MWERKS__,<=0x3003)
#pragma parse_mfunc_templ reset
#endif
};
/* specialized algorithms */
template<
typename KeyFromValue,typename Hash,typename Pred,
typename SuperMeta,typename TagList,typename Category
>
void swap(
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& x,
hashed_index<KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>& y)
{
x.swap(y);
}
} /* namespace multi_index::detail */
/* hashed index specifiers */
template<typename Arg1,typename Arg2,typename Arg3,typename Arg4>
struct hashed_unique
{
typedef typename detail::hashed_index_args<
Arg1,Arg2,Arg3,Arg4> index_args;
typedef typename index_args::tag_list_type::type tag_list_type;
typedef typename index_args::key_from_value_type key_from_value_type;
typedef typename index_args::hash_type hash_type;
typedef typename index_args::pred_type pred_type;
template<typename Super>
struct node_class
{
typedef detail::hashed_index_node<Super> type;
};
template<typename SuperMeta>
struct index_class
{
typedef detail::hashed_index<
key_from_value_type,hash_type,pred_type,
SuperMeta,tag_list_type,detail::hashed_unique_tag> type;
};
};
template<typename Arg1,typename Arg2,typename Arg3,typename Arg4>
struct hashed_non_unique
{
typedef typename detail::hashed_index_args<
Arg1,Arg2,Arg3,Arg4> index_args;
typedef typename index_args::tag_list_type::type tag_list_type;
typedef typename index_args::key_from_value_type key_from_value_type;
typedef typename index_args::hash_type hash_type;
typedef typename index_args::pred_type pred_type;
template<typename Super>
struct node_class
{
typedef detail::hashed_index_node<Super> type;
};
template<typename SuperMeta>
struct index_class
{
typedef detail::hashed_index<
key_from_value_type,hash_type,pred_type,
SuperMeta,tag_list_type,detail::hashed_non_unique_tag> type;
};
};
} /* namespace multi_index */
} /* namespace boost */
/* Boost.Foreach compatibility */
template<
typename KeyFromValue,typename Hash,typename Pred,
typename SuperMeta,typename TagList,typename Category
>
inline boost::mpl::true_* boost_foreach_is_noncopyable(
boost::multi_index::detail::hashed_index<
KeyFromValue,Hash,Pred,SuperMeta,TagList,Category>*&,
boost::foreach::tag)
{
return 0;
}
#undef BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT
#endif
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