ordered_index.hpp

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/* Copyright 2003-2004 Joaqu韓 M L髉ez Mu駉z.
 * 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.
 *
 * The internal implementation of red-black trees is based on that of SGI STL
 * stl_tree.h file: 
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */

#ifndef BOOST_MULTI_INDEX_ORDERED_INDEX_HPP
#define BOOST_MULTI_INDEX_ORDERED_INDEX_HPP

#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <algorithm>
#include <boost/call_traits.hpp>
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/detail/workaround.hpp>
#include <boost/iterator/reverse_iterator.hpp>
#include <boost/mpl/push_front.hpp>
#include <boost/multi_index/detail/access_specifier.hpp>
#include <boost/multi_index/detail/index_iterator.hpp>
#include <boost/multi_index/detail/modify_key_adaptor.hpp>
#include <boost/multi_index/detail/ord_index_node.hpp>
#include <boost/multi_index/detail/ord_index_ops.hpp>
#include <boost/multi_index/detail/prevent_eti.hpp>
#include <boost/multi_index/detail/safe_mode.hpp>
#include <boost/multi_index/detail/scope_guard.hpp>
#include <boost/multi_index/detail/unbounded.hpp>
#include <boost/multi_index/detail/value_compare.hpp>
#include <boost/multi_index/ordered_index_fwd.hpp>
#include <boost/ref.hpp>
#include <boost/tuple/tuple.hpp>
#include <utility>

#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)
#define BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT                          \
  detail::scope_guard BOOST_JOIN(check_invariant_,__LINE__)=                 \
    detail::make_obj_guard(*this,&ordered_index::check_invariant_);          \
  BOOST_JOIN(check_invariant_,__LINE__).touch();
#else
#define BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT
#endif

namespace boost{

namespace multi_index{

namespace detail{

/* ordered_index adds a layer of 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 ordered_unique_tag{};
struct ordered_non_unique_tag{};

template<
  typename KeyFromValue,typename Compare,
  typename Super,typename TagList,typename Category
>

#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
class ordered_index:
  BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS Super,
  public index_proxy<ordered_index_node<typename Super::node_type> >
#else
class ordered_index:
  BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS Super,
  public safe_container<
    ordered_index<KeyFromValue,Compare,Super,TagList,Category> >
#endif
#else
class ordered_index:
  BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS Super
#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

protected:
  typedef ordered_index_node<
      typename Super::node_type>                     node_type;

public:
  /* types */

  typedef typename KeyFromValue::result_type         key_type;
  typedef typename node_type::value_type             value_type;
  typedef KeyFromValue                               key_from_value;
  typedef Compare                                    key_compare;
  typedef value_comparison<
    value_type,KeyFromValue,Compare>                 value_compare;
  typedef tuple<key_from_value,key_compare>          ctor_args;
  typedef typename Super::final_allocator_type       allocator_type;
  typedef typename allocator_type::reference         reference;
  typedef typename allocator_type::const_reference   const_reference;

#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
  typedef index_iterator<node_type>                  iterator;
  typedef index_iterator<node_type>                  const_iterator;
#else
  typedef index_iterator<node_type,ordered_index>    iterator;
  typedef index_iterator<node_type,ordered_index>    const_iterator;
#endif
#else
  typedef index_iterator<node_type>                  iterator;
  typedef index_iterator<node_type>                  const_iterator;
#endif

  typedef std::size_t                                size_type;      
  typedef std::ptrdiff_t                             difference_type;
  typedef typename allocator_type::pointer           pointer;
  typedef typename allocator_type::const_pointer     const_pointer;
  typedef typename
    boost::reverse_iterator<iterator>                reverse_iterator;
  typedef typename
    boost::reverse_iterator<const_iterator>          const_reverse_iterator;
  typedef typename TagList::type                     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,
    ordered_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;

private:
#if defined(BOOST_MULTI_INDEX_ENABLE_SAFE_MODE)
#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
  typedef index_proxy<
      ordered_index_node<
        typename Super::node_type> >                 safe_super;
#else
  typedef safe_container<ordered_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/copy/destroy
   * Default and copy ctors are in the protected section as indices are
   * not supposed to be created on their own. No range ctor either.
   */

  ordered_index<KeyFromValue,Compare,Super,TagList,Category>& operator=(
    const ordered_index<KeyFromValue,Compare,Super,TagList,Category>& x)
  {
    BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT;
    this->final()=x.final();
    return *this;
  }

  allocator_type get_allocator()const
  {
    return this->final().get_allocator();
  }

  /* iterators */

  iterator               begin(){return make_iterator(leftmost());}
  const_iterator         begin()const{return make_iterator(leftmost());}
  iterator               end(){return make_iterator(header());}
  const_iterator         end()const{return make_iterator(header());}
  reverse_iterator       rbegin(){return make_reverse_iterator(end());}
  const_reverse_iterator rbegin()const{return make_reverse_iterator(end());}
  reverse_iterator       rend(){return make_reverse_iterator(begin());}
  const_reverse_iterator rend()const{return make_reverse_iterator(begin());}
 
  /* 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_();}

  /* modifiers */

  std::pair<iterator,bool> insert(value_param_type x)
  {
    BOOST_MULTI_INDEX_ORD_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_ORD_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_ORD_INDEX_CHECK_INVARIANT;
    iterator hint=end();
    for(;first!=last;++first)hint=insert(hint,*first);
  }

  void 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_ORD_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

    this->final_erase_(static_cast<final_node_type*>(position.get_node()));
  }
  
  size_type erase(key_param_type x)
  {
    BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT;
    std::pair<iterator,iterator> p=equal_range(x);
    size_type s=0;
    while(p.first!=p.second){
      erase(p.first++);
      ++s;
    }
    return s;
  }

  void 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_ORD_INDEX_CHECK_INVARIANT;
    while(first!=last){
      erase(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_ORD_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_ORD_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>
  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_ORD_INDEX_CHECK_INVARIANT;
    return modify(
      position,modify_key_adaptor<Modifier,value_type,KeyFromValue>(mod,key));
  }

  void swap(ordered_index<KeyFromValue,Compare,Super,TagList,Category>& x)
  {
    BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT;
    this->final_swap_(x.final());
  }

  void clear()
  {
    BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT;
    erase(begin(),end());
  }

  /* observers */

  key_from_value key_extractor()const{return key;}
  key_compare    key_comp()const{return comp;}
  value_compare  value_comp()const{return value_compare(key,comp);}

  /* set operations */

  /* no need to provide non-const versions as
   * ordered_index::iterator==ordered_index::const_iterator
   */

  template<typename CompatibleKey>
  const_iterator find(const CompatibleKey& x)const
  {
    return make_iterator(ordered_index_find(header(),key,x,comp));
  }

  template<typename CompatibleKey,typename CompatibleCompare>
  const_iterator find(
    const CompatibleKey& x,const CompatibleCompare& comp)const
  {
    return make_iterator(ordered_index_find(header(),key,x,comp));
  }

  template<typename CompatibleKey>
  size_type count(const CompatibleKey& x)const
  {