williamr@2: /* Copyright 2003-2006 Joaquín M López Muñoz.
williamr@2:  * Distributed under the Boost Software License, Version 1.0.
williamr@2:  * (See accompanying file LICENSE_1_0.txt or copy at
williamr@2:  * http://www.boost.org/LICENSE_1_0.txt)
williamr@2:  *
williamr@2:  * See http://www.boost.org/libs/multi_index for library home page.
williamr@2:  */
williamr@2: 
williamr@2: #ifndef BOOST_MULTI_INDEX_COMPOSITE_KEY_HPP
williamr@2: #define BOOST_MULTI_INDEX_COMPOSITE_KEY_HPP
williamr@2: 
williamr@2: #if defined(_MSC_VER)&&(_MSC_VER>=1200)
williamr@2: #pragma once
williamr@2: #endif
williamr@2: 
williamr@2: #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
williamr@2: #include <boost/multi_index/detail/access_specifier.hpp>
williamr@2: #include <boost/multi_index/detail/prevent_eti.hpp>
williamr@2: #include <boost/mpl/eval_if.hpp>
williamr@2: #include <boost/mpl/identity.hpp>
williamr@2: #include <boost/mpl/if.hpp>
williamr@2: #include <boost/mpl/or.hpp>
williamr@2: #include <boost/mpl/aux_/nttp_decl.hpp>
williamr@2: #include <boost/preprocessor/cat.hpp>
williamr@2: #include <boost/preprocessor/control/expr_if.hpp>
williamr@2: #include <boost/preprocessor/list/at.hpp>
williamr@2: #include <boost/preprocessor/repetition/enum.hpp>
williamr@2: #include <boost/preprocessor/repetition/enum_params.hpp> 
williamr@2: #include <boost/static_assert.hpp>
williamr@2: #include <boost/tuple/tuple.hpp>
williamr@2: #include <boost/type_traits/is_same.hpp>
williamr@2: #include <boost/utility/enable_if.hpp>
williamr@2: #include <functional>
williamr@2: 
williamr@2: #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
williamr@2: #include <boost/ref.hpp>
williamr@2: #endif
williamr@2: 
williamr@2: #if !defined(BOOST_NO_SFINAE)
williamr@2: #include <boost/type_traits/is_convertible.hpp>
williamr@2: #endif
williamr@2: 
williamr@2: /* A composite key stores n key extractors and "computes" the
williamr@2:  * result on a given value as a packed reference to the value and
williamr@2:  * the composite key itself. Actual invocations to the component
williamr@2:  * key extractors are lazily performed when executing an operation
williamr@2:  * on composite_key results (equality, comparison, hashing.)
williamr@2:  * As the other key extractors in Boost.MultiIndex, composite_key<T,...>
williamr@2:  * is  overloaded to work on chained pointers to T and reference_wrappers
williamr@2:  * of T.
williamr@2:  */
williamr@2: 
williamr@2: /* This user_definable macro limits the number of elements of a composite
williamr@2:  * key; useful for shortening resulting symbol names (MSVC++ 6.0, for
williamr@2:  * instance has problems coping with very long symbol names.)
williamr@2:  * NB: This cannot exceed the maximum number of arguments of
williamr@2:  * boost::tuple. In Boost 1.32, the limit is 10.
williamr@2:  */
williamr@2: 
williamr@2: #if !defined(BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE)
williamr@2: #if defined(BOOST_MSVC)&&(BOOST_MSVC<1300)
williamr@2: #define BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE 5
williamr@2: #else
williamr@2: #define BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE 10
williamr@2: #endif
williamr@2: #endif
williamr@2: 
williamr@2: /* maximum number of key extractors in a composite key */
williamr@2: 
williamr@2: #if BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE<10 /* max length of a tuple */
williamr@2: #define BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE \
williamr@2:   BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE
williamr@2: #else
williamr@2: #define BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE 10
williamr@2: #endif
williamr@2: 
williamr@2: /* BOOST_PP_ENUM of BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE elements */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_ENUM(macro,data)                                \
williamr@2:   BOOST_PP_ENUM(BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE,macro,data)
williamr@2: 
williamr@2: /* BOOST_PP_ENUM_PARAMS of BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE elements */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_ENUM_PARAMS(param)                              \
williamr@2:   BOOST_PP_ENUM_PARAMS(BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE,param)
williamr@2: 
williamr@2: /* if n==0 ->   text0
williamr@2:  * otherwise -> textn=tuples::null_type
williamr@2:  */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_TEMPLATE_PARM(z,n,text)                         \
williamr@2:   typename BOOST_PP_CAT(text,n) BOOST_PP_EXPR_IF(n,=tuples::null_type)
williamr@2: 
williamr@2: /* const textn& kn=textn() */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_CTOR_ARG(z,n,text)                              \
williamr@2:   const BOOST_PP_CAT(text,n)& BOOST_PP_CAT(k,n) = BOOST_PP_CAT(text,n)()
williamr@2: 
williamr@2: /* typename list(0)<list(1),n>::type */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N(z,n,list)                  \
williamr@2:   BOOST_DEDUCED_TYPENAME BOOST_PP_LIST_AT(list,0)<                           \
williamr@2:     BOOST_PP_LIST_AT(list,1),n                                               \
williamr@2:   >::type
williamr@2: 
williamr@2: namespace boost{
williamr@2: 
williamr@2: template<class T> class reference_wrapper; /* fwd decl. */
williamr@2: template<class T> struct hash; /* fwd decl. */
williamr@2: 
williamr@2: namespace multi_index{
williamr@2: 
williamr@2: namespace detail{
williamr@2: 
williamr@2: /* n-th key extractor of a composite key */
williamr@2: 
williamr@2: template<typename CompositeKey,BOOST_MPL_AUX_NTTP_DECL(int, N)>
williamr@2: struct nth_key_from_value
williamr@2: {
williamr@2:   typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple;
williamr@2:   typedef typename prevent_eti<
williamr@2:     tuples::element<N,key_extractor_tuple>,
williamr@2:     typename mpl::eval_if_c<
williamr@2:       N<tuples::length<key_extractor_tuple>::value,
williamr@2:       tuples::element<N,key_extractor_tuple>,
williamr@2:       mpl::identity<tuples::null_type>
williamr@2:     >::type
williamr@2:   >::type                                            type;
williamr@2: };
williamr@2: 
williamr@2: /* nth_composite_key_##name<CompositeKey,N>::type yields
williamr@2:  * functor<nth_key_from_value<CompositeKey,N> >, or tuples::null_type
williamr@2:  * if N exceeds the length of the composite key.
williamr@2:  */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(name,functor)         \
williamr@2: template<typename KeyFromValue>                                              \
williamr@2: struct BOOST_PP_CAT(key_,name)                                               \
williamr@2: {                                                                            \
williamr@2:   typedef functor<typename KeyFromValue::result_type> type;                  \
williamr@2: };                                                                           \
williamr@2:                                                                              \
williamr@2: template<>                                                                   \
williamr@2: struct BOOST_PP_CAT(key_,name)<tuples::null_type>                            \
williamr@2: {                                                                            \
williamr@2:   typedef tuples::null_type type;                                            \
williamr@2: };                                                                           \
williamr@2:                                                                              \
williamr@2: template<typename CompositeKey,BOOST_MPL_AUX_NTTP_DECL(int, N)>              \
williamr@2: struct BOOST_PP_CAT(nth_composite_key_,name)                                 \
williamr@2: {                                                                            \
williamr@2:   typedef typename nth_key_from_value<CompositeKey,N>::type key_from_value;  \
williamr@2:   typedef typename BOOST_PP_CAT(key_,name)<key_from_value>::type type;       \
williamr@2: };
williamr@2: 
williamr@2: /* nth_composite_key_equal_to
williamr@2:  * nth_composite_key_less
williamr@2:  * nth_composite_key_greater
williamr@2:  * nth_composite_key_hash
williamr@2:  */
williamr@2: 
williamr@2: BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(equal_to,std::equal_to)
williamr@2: BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(less,std::less)
williamr@2: BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(greater,std::greater)
williamr@2: BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(hash,boost::hash)
williamr@2: 
williamr@2: /* used for defining equality and comparison ops of composite_key_result */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO(z,n,text) text
williamr@2: 
williamr@2: struct generic_operator_equal
williamr@2: {
williamr@2:   template<typename T,typename Q>
williamr@2:   bool operator()(const T& x,const Q& y)const{return x==y;}
williamr@2: };
williamr@2: 
williamr@2: typedef tuple<
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(
williamr@2:     BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO,
williamr@2:     detail::generic_operator_equal)>          generic_operator_equal_tuple;
williamr@2: 
williamr@2: struct generic_operator_less
williamr@2: {
williamr@2:   template<typename T,typename Q>
williamr@2:   bool operator()(const T& x,const Q& y)const{return x<y;}
williamr@2: };
williamr@2: 
williamr@2: typedef tuple<
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(
williamr@2:     BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO,
williamr@2:     detail::generic_operator_less)>           generic_operator_less_tuple;
williamr@2: 
williamr@2: /* Metaprogramming machinery for implementing equality, comparison and
williamr@2:  * hashing operations of composite_key_result.
williamr@2:  *
williamr@2:  * equal_* checks for equality between composite_key_results and
williamr@2:  * between those and tuples, accepting a tuple of basic equality functors.
williamr@2:  * compare_* does lexicographical comparison.
williamr@2:  * hash_* computes a combination of elementwise hash values.
williamr@2:  */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_ckey; /* fwd decl. */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_ckey_terminal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons1&,const Value1&,
williamr@2:     const KeyCons2&,const Value2&,
williamr@2:     const EqualCons&)
williamr@2:   {
williamr@2:     return true;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_ckey_normal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons1& c0,const Value1& v0,
williamr@2:     const KeyCons2& c1,const Value2& v1,
williamr@2:     const EqualCons& eq)
williamr@2:   {
williamr@2:     if(!eq.get_head()(c0.get_head()(v0),c1.get_head()(v1)))return false;
williamr@2:     return equal_ckey_ckey<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons1::tail_type,Value1,
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons2::tail_type,Value2,
williamr@2:       BOOST_DEDUCED_TYPENAME EqualCons::tail_type
williamr@2:     >::compare(c0.get_tail(),v0,c1.get_tail(),v1,eq.get_tail());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_ckey:
williamr@2:   mpl::if_<
williamr@2:     mpl::or_<
williamr@2:       is_same<KeyCons1,tuples::null_type>,
williamr@2:       is_same<KeyCons2,tuples::null_type>
williamr@2:     >,
williamr@2:     equal_ckey_ckey_terminal<KeyCons1,Value1,KeyCons2,Value2,EqualCons>,
williamr@2:     equal_ckey_ckey_normal<KeyCons1,Value1,KeyCons2,Value2,EqualCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_cval; /* fwd decl. */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_cval_terminal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons&,const Value&,const ValCons&,const EqualCons&)
williamr@2:   {
williamr@2:     return true;
williamr@2:   }
williamr@2: 
williamr@2:   static bool compare(
williamr@2:     const ValCons&,const KeyCons&,const Value&,const EqualCons&)
williamr@2:   {
williamr@2:     return true;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_cval_normal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons& c,const Value& v,const ValCons& vc,
williamr@2:     const EqualCons& eq)
williamr@2:   {
williamr@2:     if(!eq.get_head()(c.get_head()(v),vc.get_head()))return false;
williamr@2:     return equal_ckey_cval<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value,
williamr@2:       BOOST_DEDUCED_TYPENAME ValCons::tail_type,
williamr@2:       BOOST_DEDUCED_TYPENAME EqualCons::tail_type
williamr@2:     >::compare(c.get_tail(),v,vc.get_tail(),eq.get_tail());
williamr@2:   }
williamr@2: 
williamr@2:   static bool compare(
williamr@2:     const ValCons& vc,const KeyCons& c,const Value& v,
williamr@2:     const EqualCons& eq)
williamr@2:   {
williamr@2:     if(!eq.get_head()(vc.get_head(),c.get_head()(v)))return false;
williamr@2:     return equal_ckey_cval<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value,
williamr@2:       BOOST_DEDUCED_TYPENAME ValCons::tail_type,
williamr@2:       BOOST_DEDUCED_TYPENAME EqualCons::tail_type
williamr@2:     >::compare(vc.get_tail(),c.get_tail(),v,eq.get_tail());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename EqualCons
williamr@2: >
williamr@2: struct equal_ckey_cval:
williamr@2:   mpl::if_<
williamr@2:     mpl::or_<
williamr@2:       is_same<KeyCons,tuples::null_type>,
williamr@2:       is_same<ValCons,tuples::null_type>
williamr@2:     >,
williamr@2:     equal_ckey_cval_terminal<KeyCons,Value,ValCons,EqualCons>,
williamr@2:     equal_ckey_cval_normal<KeyCons,Value,ValCons,EqualCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_ckey; /* fwd decl. */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_ckey_terminal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons1&,const Value1&,
williamr@2:     const KeyCons2&,const Value2&,
williamr@2:     const CompareCons&)
williamr@2:   {
williamr@2:     return false;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_ckey_normal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons1& c0,const Value1& v0,
williamr@2:     const KeyCons2& c1,const Value2& v1,
williamr@2:     const CompareCons& comp)
williamr@2:   {
williamr@2:     if(comp.get_head()(c0.get_head()(v0),c1.get_head()(v1)))return true;
williamr@2:     if(comp.get_head()(c1.get_head()(v1),c0.get_head()(v0)))return false;
williamr@2:     return compare_ckey_ckey<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons1::tail_type,Value1,
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons2::tail_type,Value2,
williamr@2:       BOOST_DEDUCED_TYPENAME CompareCons::tail_type
williamr@2:     >::compare(c0.get_tail(),v0,c1.get_tail(),v1,comp.get_tail());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons1,typename Value1,
williamr@2:   typename KeyCons2, typename Value2,
williamr@2:   typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_ckey:
williamr@2:   mpl::if_<
williamr@2:     mpl::or_<
williamr@2:       is_same<KeyCons1,tuples::null_type>,
williamr@2:       is_same<KeyCons2,tuples::null_type>
williamr@2:     >,
williamr@2:     compare_ckey_ckey_terminal<KeyCons1,Value1,KeyCons2,Value2,CompareCons>,
williamr@2:     compare_ckey_ckey_normal<KeyCons1,Value1,KeyCons2,Value2,CompareCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_cval; /* fwd decl. */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_cval_terminal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons&,const Value&,const ValCons&,const CompareCons&)
williamr@2:   {
williamr@2:     return false;
williamr@2:   }
williamr@2: 
williamr@2:   static bool compare(
williamr@2:     const ValCons&,const KeyCons&,const Value&,const CompareCons&)
williamr@2:   {
williamr@2:     return false;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_cval_normal
williamr@2: {
williamr@2:   static bool compare(
williamr@2:     const KeyCons& c,const Value& v,const ValCons& vc,
williamr@2:     const CompareCons& comp)
williamr@2:   {
williamr@2:     if(comp.get_head()(c.get_head()(v),vc.get_head()))return true;
williamr@2:     if(comp.get_head()(vc.get_head(),c.get_head()(v)))return false;
williamr@2:     return compare_ckey_cval<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value,
williamr@2:       BOOST_DEDUCED_TYPENAME ValCons::tail_type,
williamr@2:       BOOST_DEDUCED_TYPENAME CompareCons::tail_type
williamr@2:     >::compare(c.get_tail(),v,vc.get_tail(),comp.get_tail());
williamr@2:   }
williamr@2: 
williamr@2:   static bool compare(
williamr@2:     const ValCons& vc,const KeyCons& c,const Value& v,
williamr@2:     const CompareCons& comp)
williamr@2:   {
williamr@2:     if(comp.get_head()(vc.get_head(),c.get_head()(v)))return true;
williamr@2:     if(comp.get_head()(c.get_head()(v),vc.get_head()))return false;
williamr@2:     return compare_ckey_cval<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value,
williamr@2:       BOOST_DEDUCED_TYPENAME ValCons::tail_type,
williamr@2:       BOOST_DEDUCED_TYPENAME CompareCons::tail_type
williamr@2:     >::compare(vc.get_tail(),c.get_tail(),v,comp.get_tail());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename KeyCons,typename Value,
williamr@2:   typename ValCons,typename CompareCons
williamr@2: >
williamr@2: struct compare_ckey_cval:
williamr@2:   mpl::if_<
williamr@2:     mpl::or_<
williamr@2:       is_same<KeyCons,tuples::null_type>,
williamr@2:       is_same<ValCons,tuples::null_type>
williamr@2:     >,
williamr@2:     compare_ckey_cval_terminal<KeyCons,Value,ValCons,CompareCons>,
williamr@2:     compare_ckey_cval_normal<KeyCons,Value,ValCons,CompareCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template<typename KeyCons,typename Value,typename HashCons>
williamr@2: struct hash_ckey; /* fwd decl. */
williamr@2: 
williamr@2: template<typename KeyCons,typename Value,typename HashCons>
williamr@2: struct hash_ckey_terminal
williamr@2: {
williamr@2:   static std::size_t hash(
williamr@2:     const KeyCons&,const Value&,const HashCons&,std::size_t carry)
williamr@2:   {
williamr@2:     return carry;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template<typename KeyCons,typename Value,typename HashCons>
williamr@2: struct hash_ckey_normal
williamr@2: {
williamr@2:   static std::size_t hash(
williamr@2:     const KeyCons& c,const Value& v,const HashCons& h,std::size_t carry=0)
williamr@2:   {
williamr@2:     /* same hashing formula as boost::hash_combine */
williamr@2: 
williamr@2:     carry^=h.get_head()(c.get_head()(v))+0x9e3779b9+(carry<<6)+(carry>>2);
williamr@2:     return hash_ckey<
williamr@2:       BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value,
williamr@2:       BOOST_DEDUCED_TYPENAME HashCons::tail_type
williamr@2:     >::hash(c.get_tail(),v,h.get_tail(),carry);
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template<typename KeyCons,typename Value,typename HashCons>
williamr@2: struct hash_ckey:
williamr@2:   mpl::if_<
williamr@2:     is_same<KeyCons,tuples::null_type>,
williamr@2:     hash_ckey_terminal<KeyCons,Value,HashCons>,
williamr@2:     hash_ckey_normal<KeyCons,Value,HashCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template<typename ValCons,typename HashCons>
williamr@2: struct hash_cval; /* fwd decl. */
williamr@2: 
williamr@2: template<typename ValCons,typename HashCons>
williamr@2: struct hash_cval_terminal
williamr@2: {
williamr@2:   static std::size_t hash(const ValCons&,const HashCons&,std::size_t carry)
williamr@2:   {
williamr@2:     return carry;
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template<typename ValCons,typename HashCons>
williamr@2: struct hash_cval_normal
williamr@2: {
williamr@2:   static std::size_t hash(
williamr@2:     const ValCons& vc,const HashCons& h,std::size_t carry=0)
williamr@2:   {
williamr@2:     carry^=h.get_head()(vc.get_head())+0x9e3779b9+(carry<<6)+(carry>>2);
williamr@2:     return hash_cval<
williamr@2:       BOOST_DEDUCED_TYPENAME ValCons::tail_type,
williamr@2:       BOOST_DEDUCED_TYPENAME HashCons::tail_type
williamr@2:     >::hash(vc.get_tail(),h.get_tail(),carry);
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: template<typename ValCons,typename HashCons>
williamr@2: struct hash_cval:
williamr@2:   mpl::if_<
williamr@2:     is_same<ValCons,tuples::null_type>,
williamr@2:     hash_cval_terminal<ValCons,HashCons>,
williamr@2:     hash_cval_normal<ValCons,HashCons>
williamr@2:   >::type
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: } /* namespace multi_index::detail */
williamr@2: 
williamr@2: /* composite_key_result */
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: struct composite_key_result
williamr@2: {
williamr@2:   typedef CompositeKey                            composite_key_type;
williamr@2:   typedef typename composite_key_type::value_type value_type;
williamr@2: 
williamr@2:   composite_key_result(
williamr@2:     const composite_key_type& composite_key_,const value_type& value_):
williamr@2:     composite_key(composite_key_),value(value_)
williamr@2:   {}
williamr@2: 
williamr@2:   const composite_key_type& composite_key;
williamr@2:   const value_type&         value;
williamr@2: };
williamr@2: 
williamr@2: /* composite_key */
williamr@2: 
williamr@2: /* NB. Some overloads of operator() have an extra dummy parameter int=0.
williamr@2:  * This disambiguator serves several purposes:
williamr@2:  *  - Without it, MSVC++ 6.0 incorrectly regards some overloads as
williamr@2:  *    specializations of a previous member function template.
williamr@2:  *  - MSVC++ 6.0/7.0 seem to incorrectly treat some different memfuns
williamr@2:  *    as if they have the same signature.
williamr@2:  *  - If remove_const is broken due to lack of PTS, int=0 avoids the
williamr@2:  *    declaration of memfuns with identical signature.
williamr@2:  */
williamr@2: 
williamr@2: template<
williamr@2:   typename Value,
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,KeyFromValue)
williamr@2: >
williamr@2: struct composite_key:
williamr@2:   private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(KeyFromValue)>
williamr@2: {
williamr@2: private:
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(KeyFromValue)> super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef super                               key_extractor_tuple;
williamr@2:   typedef Value                               value_type;
williamr@2:   typedef composite_key_result<composite_key> result_type;
williamr@2: 
williamr@2:   composite_key(
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,KeyFromValue)):
williamr@2:     super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k))
williamr@2:   {}
williamr@2: 
williamr@2:   composite_key(const key_extractor_tuple& x):super(x){}
williamr@2: 
williamr@2:   const key_extractor_tuple& key_extractors()const{return *this;}
williamr@2:   key_extractor_tuple&       key_extractors(){return *this;}
williamr@2: 
williamr@2:   template<typename ChainedPtr>
williamr@2: 
williamr@2: #if !defined(BOOST_NO_SFINAE)
williamr@2:   typename disable_if<
williamr@2:     is_convertible<const ChainedPtr&,const value_type&>,result_type>::type
williamr@2: #else
williamr@2:   result_type
williamr@2: #endif
williamr@2: 
williamr@2:   operator()(const ChainedPtr& x)const
williamr@2:   {
williamr@2:     return operator()(*x);
williamr@2:   }
williamr@2: 
williamr@2:   result_type operator()(const value_type& x)const
williamr@2:   {
williamr@2:     return result_type(*this,x);
williamr@2:   }
williamr@2: 
williamr@2:   result_type operator()(const reference_wrapper<const value_type>& x)const
williamr@2:   {
williamr@2:     return result_type(*this,x.get());
williamr@2:   }
williamr@2: 
williamr@2:   result_type operator()(const reference_wrapper<value_type>& x,int=0)const
williamr@2:   {
williamr@2:     return result_type(*this,x.get());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: /* comparison operators */
williamr@2: 
williamr@2: /* == */
williamr@2: 
williamr@2: template<typename CompositeKey1,typename CompositeKey2>
williamr@2: inline bool operator==(
williamr@2:   const composite_key_result<CompositeKey1>& x,
williamr@2:   const composite_key_result<CompositeKey2>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1;
williamr@2:   typedef typename CompositeKey1::value_type          value_type1;
williamr@2:   typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2;
williamr@2:   typedef typename CompositeKey2::value_type          value_type2;
williamr@2: 
williamr@2:   BOOST_STATIC_ASSERT(
williamr@2:     tuples::length<key_extractor_tuple1>::value==
williamr@2:     tuples::length<key_extractor_tuple2>::value);
williamr@2: 
williamr@2:   return detail::equal_ckey_ckey<
williamr@2:     key_extractor_tuple1,value_type1,
williamr@2:     key_extractor_tuple2,value_type2,
williamr@2:     detail::generic_operator_equal_tuple
williamr@2:   >::compare(
williamr@2:     x.composite_key.key_extractors(),x.value,
williamr@2:     y.composite_key.key_extractors(),y.value,
williamr@2:     detail::generic_operator_equal_tuple());
williamr@2: }
williamr@2: 
williamr@2: template<
williamr@2:   typename CompositeKey,
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)
williamr@2: >
williamr@2: inline bool operator==(
williamr@2:   const composite_key_result<CompositeKey>& x,
williamr@2:   const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:   typedef typename CompositeKey::value_type              value_type;
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2:   
williamr@2:   BOOST_STATIC_ASSERT(
williamr@2:     tuples::length<key_extractor_tuple>::value==
williamr@2:     tuples::length<key_tuple>::value);
williamr@2: 
williamr@2:   return detail::equal_ckey_cval<
williamr@2:     key_extractor_tuple,value_type,
williamr@2:     key_tuple,detail::generic_operator_equal_tuple
williamr@2:   >::compare(
williamr@2:     x.composite_key.key_extractors(),x.value,
williamr@2:     y,detail::generic_operator_equal_tuple());
williamr@2: }
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:   typename CompositeKey
williamr@2: >
williamr@2: inline bool operator==(
williamr@2:   const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x,
williamr@2:   const composite_key_result<CompositeKey>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:   typedef typename CompositeKey::value_type              value_type;
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2:   
williamr@2:   BOOST_STATIC_ASSERT(
williamr@2:     tuples::length<key_extractor_tuple>::value==
williamr@2:     tuples::length<key_tuple>::value);
williamr@2: 
williamr@2:   return detail::equal_ckey_cval<
williamr@2:     key_extractor_tuple,value_type,
williamr@2:     key_tuple,detail::generic_operator_equal_tuple
williamr@2:   >::compare(
williamr@2:     x,y.composite_key.key_extractors(),
williamr@2:     y.value,detail::generic_operator_equal_tuple());
williamr@2: }
williamr@2: 
williamr@2: /* < */
williamr@2: 
williamr@2: template<typename CompositeKey1,typename CompositeKey2>
williamr@2: inline bool operator<(
williamr@2:   const composite_key_result<CompositeKey1>& x,
williamr@2:   const composite_key_result<CompositeKey2>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1;
williamr@2:   typedef typename CompositeKey1::value_type          value_type1;
williamr@2:   typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2;
williamr@2:   typedef typename CompositeKey2::value_type          value_type2;
williamr@2: 
williamr@2:   return detail::compare_ckey_ckey<
williamr@2:    key_extractor_tuple1,value_type1,
williamr@2:    key_extractor_tuple2,value_type2,
williamr@2:    detail::generic_operator_less_tuple
williamr@2:   >::compare(
williamr@2:     x.composite_key.key_extractors(),x.value,
williamr@2:     y.composite_key.key_extractors(),y.value,
williamr@2:     detail::generic_operator_less_tuple());
williamr@2: }
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   typename CompositeKey,
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)
williamr@2: >
williamr@2: inline bool operator<(
williamr@2:   const composite_key_result<CompositeKey>& x,
williamr@2:   const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:   typedef typename CompositeKey::value_type              value_type;
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2:   
williamr@2:   return detail::compare_ckey_cval<
williamr@2:     key_extractor_tuple,value_type,
williamr@2:     key_tuple,detail::generic_operator_less_tuple
williamr@2:   >::compare(
williamr@2:     x.composite_key.key_extractors(),x.value,
williamr@2:     y,detail::generic_operator_less_tuple());
williamr@2: }
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:   typename CompositeKey
williamr@2: >
williamr@2: inline bool operator<(
williamr@2:   const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x,
williamr@2:   const composite_key_result<CompositeKey>& y)
williamr@2: {
williamr@2:   typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:   typedef typename CompositeKey::value_type              value_type;
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2:   
williamr@2:   return detail::compare_ckey_cval<
williamr@2:     key_extractor_tuple,value_type,
williamr@2:     key_tuple,detail::generic_operator_less_tuple
williamr@2:   >::compare(
williamr@2:     x,y.composite_key.key_extractors(),
williamr@2:     y.value,detail::generic_operator_less_tuple());
williamr@2: }
williamr@2: 
williamr@2: /* rest of comparison operators */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS(t1,t2,a1,a2)                  \
williamr@2: template<t1,t2> inline bool operator!=(const a1& x,const a2& y)              \
williamr@2: {                                                                            \
williamr@2:   return !(x==y);                                                            \
williamr@2: }                                                                            \
williamr@2:                                                                              \
williamr@2: template<t1,t2> inline bool operator>(const a1& x,const a2& y)               \
williamr@2: {                                                                            \
williamr@2:   return y<x;                                                                \
williamr@2: }                                                                            \
williamr@2:                                                                              \
williamr@2: template<t1,t2> inline bool operator>=(const a1& x,const a2& y)              \
williamr@2: {                                                                            \
williamr@2:   return !(x<y);                                                             \
williamr@2: }                                                                            \
williamr@2:                                                                              \
williamr@2: template<t1,t2> inline bool operator<=(const a1& x,const a2& y)              \
williamr@2: {                                                                            \
williamr@2:   return !(y<x);                                                             \
williamr@2: }
williamr@2: 
williamr@2: BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS(
williamr@2:   typename CompositeKey1,
williamr@2:   typename CompositeKey2,
williamr@2:   composite_key_result<CompositeKey1>,
williamr@2:   composite_key_result<CompositeKey2>
williamr@2: )
williamr@2: 
williamr@2: BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS(
williamr@2:   typename CompositeKey,
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:   composite_key_result<CompositeKey>,
williamr@2:   tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>
williamr@2: )
williamr@2: 
williamr@2: BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS(
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:   typename CompositeKey,
williamr@2:   tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>,
williamr@2:   composite_key_result<CompositeKey>
williamr@2: )
williamr@2: 
williamr@2: /* composite_key_equal_to */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Pred)
williamr@2: >
williamr@2: struct composite_key_equal_to:
williamr@2:   private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Pred)>
williamr@2: {
williamr@2: private:
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Pred)> super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef super key_eq_tuple;
williamr@2: 
williamr@2:   composite_key_equal_to(
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Pred)):
williamr@2:     super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k))
williamr@2:   {}
williamr@2: 
williamr@2:   composite_key_equal_to(const key_eq_tuple& x):super(x){}
williamr@2: 
williamr@2:   const key_eq_tuple& key_eqs()const{return *this;}
williamr@2:   key_eq_tuple&       key_eqs(){return *this;}
williamr@2: 
williamr@2:   template<typename CompositeKey1,typename CompositeKey2>
williamr@2:   bool operator()(
williamr@2:     const composite_key_result<CompositeKey1> & x,
williamr@2:     const composite_key_result<CompositeKey2> & y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1;
williamr@2:     typedef typename CompositeKey1::value_type          value_type1;
williamr@2:     typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2;
williamr@2:     typedef typename CompositeKey2::value_type          value_type2;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_extractor_tuple1>::value<=
williamr@2:       tuples::length<key_eq_tuple>::value&&
williamr@2:       tuples::length<key_extractor_tuple1>::value==
williamr@2:       tuples::length<key_extractor_tuple2>::value);
williamr@2: 
williamr@2:     return detail::equal_ckey_ckey<
williamr@2:       key_extractor_tuple1,value_type1,
williamr@2:       key_extractor_tuple2,value_type2,
williamr@2:       key_eq_tuple
williamr@2:     >::compare(
williamr@2:       x.composite_key.key_extractors(),x.value,
williamr@2:       y.composite_key.key_extractors(),y.value,
williamr@2:       key_eqs());
williamr@2:   }
williamr@2:   
williamr@2:   template
williamr@2:   <
williamr@2:     typename CompositeKey,
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)
williamr@2:   >
williamr@2:   bool operator()(
williamr@2:     const composite_key_result<CompositeKey>& x,
williamr@2:     const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:     typedef typename CompositeKey::value_type              value_type;
williamr@2:     typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_extractor_tuple>::value<=
williamr@2:       tuples::length<key_eq_tuple>::value&&
williamr@2:       tuples::length<key_extractor_tuple>::value==
williamr@2:       tuples::length<key_tuple>::value);
williamr@2: 
williamr@2:     return detail::equal_ckey_cval<
williamr@2:       key_extractor_tuple,value_type,
williamr@2:       key_tuple,key_eq_tuple
williamr@2:     >::compare(x.composite_key.key_extractors(),x.value,y,key_eqs());
williamr@2:   }
williamr@2: 
williamr@2:   template
williamr@2:   <
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:     typename CompositeKey
williamr@2:   >
williamr@2:   bool operator()(
williamr@2:     const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x,
williamr@2:     const composite_key_result<CompositeKey>& y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:     typedef typename CompositeKey::value_type              value_type;
williamr@2:     typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_tuple>::value<=
williamr@2:       tuples::length<key_eq_tuple>::value&&
williamr@2:       tuples::length<key_tuple>::value==
williamr@2:       tuples::length<key_extractor_tuple>::value);
williamr@2: 
williamr@2:     return detail::equal_ckey_cval<
williamr@2:       key_extractor_tuple,value_type,
williamr@2:       key_tuple,key_eq_tuple
williamr@2:     >::compare(x,y.composite_key.key_extractors(),y.value,key_eqs());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: /* composite_key_compare */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Compare)
williamr@2: >
williamr@2: struct composite_key_compare:
williamr@2:   private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Compare)>
williamr@2: {
williamr@2: private:
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Compare)> super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef super key_comp_tuple;
williamr@2: 
williamr@2:   composite_key_compare(
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Compare)):
williamr@2:     super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k))
williamr@2:   {}
williamr@2: 
williamr@2:   composite_key_compare(const key_comp_tuple& x):super(x){}
williamr@2: 
williamr@2:   const key_comp_tuple& key_comps()const{return *this;}
williamr@2:   key_comp_tuple&       key_comps(){return *this;}
williamr@2: 
williamr@2:   template<typename CompositeKey1,typename CompositeKey2>
williamr@2:   bool operator()(
williamr@2:     const composite_key_result<CompositeKey1> & x,
williamr@2:     const composite_key_result<CompositeKey2> & y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1;
williamr@2:     typedef typename CompositeKey1::value_type          value_type1;
williamr@2:     typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2;
williamr@2:     typedef typename CompositeKey2::value_type          value_type2;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_extractor_tuple1>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value||
williamr@2:       tuples::length<key_extractor_tuple2>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value);
williamr@2: 
williamr@2:     return detail::compare_ckey_ckey<
williamr@2:       key_extractor_tuple1,value_type1,
williamr@2:       key_extractor_tuple2,value_type2,
williamr@2:       key_comp_tuple
williamr@2:     >::compare(
williamr@2:       x.composite_key.key_extractors(),x.value,
williamr@2:       y.composite_key.key_extractors(),y.value,
williamr@2:       key_comps());
williamr@2:   }
williamr@2:   
williamr@2: #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
williamr@2:   template<typename CompositeKey,typename Value>
williamr@2:   bool operator()(
williamr@2:     const composite_key_result<CompositeKey>& x,
williamr@2:     const Value& y)const
williamr@2:   {
williamr@2:     return operator()(x,make_tuple(cref(y)));
williamr@2:   }
williamr@2: #endif
williamr@2: 
williamr@2:   template
williamr@2:   <
williamr@2:     typename CompositeKey,
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)
williamr@2:   >
williamr@2:   bool operator()(
williamr@2:     const composite_key_result<CompositeKey>& x,
williamr@2:     const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:     typedef typename CompositeKey::value_type              value_type;
williamr@2:     typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_extractor_tuple>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value||
williamr@2:       tuples::length<key_tuple>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value);
williamr@2: 
williamr@2:     return detail::compare_ckey_cval<
williamr@2:       key_extractor_tuple,value_type,
williamr@2:       key_tuple,key_comp_tuple
williamr@2:     >::compare(x.composite_key.key_extractors(),x.value,y,key_comps());
williamr@2:   }
williamr@2: 
williamr@2: #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
williamr@2:   template<typename Value,typename CompositeKey>
williamr@2:   bool operator()(
williamr@2:     const Value& x,
williamr@2:     const composite_key_result<CompositeKey>& y)const
williamr@2:   {
williamr@2:     return operator()(make_tuple(cref(x)),y);
williamr@2:   }
williamr@2: #endif
williamr@2: 
williamr@2:   template
williamr@2:   <
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value),
williamr@2:     typename CompositeKey
williamr@2:   >
williamr@2:   bool operator()(
williamr@2:     const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x,
williamr@2:     const composite_key_result<CompositeKey>& y)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey::key_extractor_tuple     key_extractor_tuple;
williamr@2:     typedef typename CompositeKey::value_type              value_type;
williamr@2:     typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_tuple>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value||
williamr@2:       tuples::length<key_extractor_tuple>::value<=
williamr@2:       tuples::length<key_comp_tuple>::value);
williamr@2: 
williamr@2:     return detail::compare_ckey_cval<
williamr@2:       key_extractor_tuple,value_type,
williamr@2:       key_tuple,key_comp_tuple
williamr@2:     >::compare(x,y.composite_key.key_extractors(),y.value,key_comps());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: /* composite_key_hash */
williamr@2: 
williamr@2: template
williamr@2: <
williamr@2:   BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Hash)
williamr@2: >
williamr@2: struct composite_key_hash:
williamr@2:   private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Hash)>
williamr@2: {
williamr@2: private:
williamr@2:   typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Hash)> super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef super key_hasher_tuple;
williamr@2: 
williamr@2:   composite_key_hash(
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Hash)):
williamr@2:     super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k))
williamr@2:   {}
williamr@2: 
williamr@2:   composite_key_hash(const key_hasher_tuple& x):super(x){}
williamr@2: 
williamr@2:   const key_hasher_tuple& key_hash_functions()const{return *this;}
williamr@2:   key_hasher_tuple&       key_hash_functions(){return *this;}
williamr@2: 
williamr@2:   template<typename CompositeKey>
williamr@2:   std::size_t operator()(const composite_key_result<CompositeKey> & x)const
williamr@2:   {
williamr@2:     typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple;
williamr@2:     typedef typename CompositeKey::value_type          value_type;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_extractor_tuple>::value==
williamr@2:       tuples::length<key_hasher_tuple>::value);
williamr@2: 
williamr@2:     return detail::hash_ckey<
williamr@2:       key_extractor_tuple,value_type,
williamr@2:       key_hasher_tuple
williamr@2:     >::hash(x.composite_key.key_extractors(),x.value,key_hash_functions());
williamr@2:   }
williamr@2:   
williamr@2:   template<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)>
williamr@2:   std::size_t operator()(
williamr@2:     const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x)const
williamr@2:   {
williamr@2:     typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple;
williamr@2: 
williamr@2:     BOOST_STATIC_ASSERT(
williamr@2:       tuples::length<key_tuple>::value==
williamr@2:       tuples::length<key_hasher_tuple>::value);
williamr@2: 
williamr@2:     return detail::hash_cval<
williamr@2:       key_tuple,key_hasher_tuple
williamr@2:     >::hash(x,key_hash_functions());
williamr@2:   }
williamr@2: };
williamr@2: 
williamr@2: /* Instantiations of the former functors with "natural" basic components:
williamr@2:  * composite_key_result_equal_to uses std::equal_to of the values.
williamr@2:  * composite_key_result_less     uses std::less.
williamr@2:  * composite_key_result_greater  uses std::greater.
williamr@2:  * composite_key_result_hash     uses boost::hash.
williamr@2:  */
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER                           \
williamr@2: composite_key_equal_to<                                                      \
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(                                               \
williamr@2:       BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N,                             \
williamr@2:       /* the argument is a PP list */                                        \
williamr@2:       (detail::nth_composite_key_equal_to,                                   \
williamr@2:         (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type,      \
williamr@2:           BOOST_PP_NIL)))                                                    \
williamr@2:   >
williamr@2: 
williamr@2: template<typename CompositeKeyResult>
williamr@2: struct composite_key_result_equal_to:
williamr@2: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS
williamr@2: BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER
williamr@2: {
williamr@2: private:
williamr@2:   typedef BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef CompositeKeyResult  first_argument_type;
williamr@2:   typedef first_argument_type second_argument_type;
williamr@2:   typedef bool                result_type;
williamr@2: 
williamr@2:   using super::operator();
williamr@2: };
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER                               \
williamr@2: composite_key_compare<                                                       \
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(                                               \
williamr@2:       BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N,                             \
williamr@2:       /* the argument is a PP list */                                        \
williamr@2:       (detail::nth_composite_key_less,                                       \
williamr@2:         (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type,      \
williamr@2:           BOOST_PP_NIL)))                                                    \
williamr@2:   >
williamr@2: 
williamr@2: template<typename CompositeKeyResult>
williamr@2: struct composite_key_result_less:
williamr@2: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS
williamr@2: BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER
williamr@2: {
williamr@2: private:
williamr@2:   typedef BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef CompositeKeyResult  first_argument_type;
williamr@2:   typedef first_argument_type second_argument_type;
williamr@2:   typedef bool                result_type;
williamr@2: 
williamr@2:   using super::operator();
williamr@2: };
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER                            \
williamr@2: composite_key_compare<                                                       \
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(                                               \
williamr@2:       BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N,                             \
williamr@2:       /* the argument is a PP list */                                        \
williamr@2:       (detail::nth_composite_key_greater,                                    \
williamr@2:         (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type,      \
williamr@2:           BOOST_PP_NIL)))                                                    \
williamr@2:   >
williamr@2: 
williamr@2: template<typename CompositeKeyResult>
williamr@2: struct composite_key_result_greater:
williamr@2: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS
williamr@2: BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER
williamr@2: {
williamr@2: private:
williamr@2:   typedef BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef CompositeKeyResult  first_argument_type;
williamr@2:   typedef first_argument_type second_argument_type;
williamr@2:   typedef bool                result_type;
williamr@2: 
williamr@2:   using super::operator();
williamr@2: };
williamr@2: 
williamr@2: #define BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER                               \
williamr@2: composite_key_hash<                                                          \
williamr@2:     BOOST_MULTI_INDEX_CK_ENUM(                                               \
williamr@2:       BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N,                             \
williamr@2:       /* the argument is a PP list */                                        \
williamr@2:       (detail::nth_composite_key_hash,                                       \
williamr@2:         (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type,      \
williamr@2:           BOOST_PP_NIL)))                                                    \
williamr@2:   >
williamr@2: 
williamr@2: template<typename CompositeKeyResult>
williamr@2: struct composite_key_result_hash:
williamr@2: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS
williamr@2: BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER
williamr@2: {
williamr@2: private:
williamr@2:   typedef BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER super;
williamr@2: 
williamr@2: public:
williamr@2:   typedef CompositeKeyResult argument_type;
williamr@2:   typedef std::size_t        result_type;
williamr@2: 
williamr@2:   using super::operator();
williamr@2: };
williamr@2: 
williamr@2: } /* namespace multi_index */
williamr@2: 
williamr@2: } /* namespace boost */
williamr@2: 
williamr@2: /* Specializations of std::equal_to, std::less, std::greater and boost::hash
williamr@2:  * for composite_key_results enabling interoperation with tuples of values.
williamr@2:  */
williamr@2: 
williamr@2: #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
williamr@2: namespace std{
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: struct equal_to<boost::multi_index::composite_key_result<CompositeKey> >:
williamr@2:   boost::multi_index::composite_key_result_equal_to<
williamr@2:     boost::multi_index::composite_key_result<CompositeKey>
williamr@2:   >
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: struct less<boost::multi_index::composite_key_result<CompositeKey> >:
williamr@2:   boost::multi_index::composite_key_result_less<
williamr@2:     boost::multi_index::composite_key_result<CompositeKey>
williamr@2:   >
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: struct greater<boost::multi_index::composite_key_result<CompositeKey> >:
williamr@2:   boost::multi_index::composite_key_result_greater<
williamr@2:     boost::multi_index::composite_key_result<CompositeKey>
williamr@2:   >
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: } /* namespace std */
williamr@2: 
williamr@2: namespace boost{
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: struct hash<boost::multi_index::composite_key_result<CompositeKey> >:
williamr@2:   boost::multi_index::composite_key_result_hash<
williamr@2:     boost::multi_index::composite_key_result<CompositeKey>
williamr@2:   >
williamr@2: {
williamr@2: };
williamr@2: 
williamr@2: } /* namespace boost */
williamr@2: #else
williamr@2: /* Lacking template partial specialization, std::equal_to, std::less and
williamr@2:  * std::greater will still work for composite_key_results although without
williamr@2:  * tuple interoperability. To achieve the same graceful degrading with
williamr@2:  * boost::hash, we define the appropriate hash_value overload.
williamr@2:  */
williamr@2: 
williamr@2: namespace boost{
williamr@2: 
williamr@2: #if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
williamr@2: namespace multi_index{
williamr@2: #endif
williamr@2: 
williamr@2: template<typename CompositeKey>
williamr@2: inline std::size_t hash_value(
williamr@2:   const boost::multi_index::composite_key_result<CompositeKey>& x)
williamr@2: {
williamr@2:   boost::multi_index::composite_key_result_hash<
williamr@2:     boost::multi_index::composite_key_result<CompositeKey> > h;
williamr@2:   return h(x);
williamr@2: }
williamr@2: 
williamr@2: #if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
williamr@2: } /* namespace multi_index */
williamr@2: #endif
williamr@2: 
williamr@2: } /* namespace boost */
williamr@2: #endif
williamr@2: 
williamr@2: #undef BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER
williamr@2: #undef BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER
williamr@2: #undef BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER
williamr@2: #undef BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER
williamr@2: #undef BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS
williamr@2: #undef BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO
williamr@2: #undef BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR
williamr@2: #undef BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N
williamr@2: #undef BOOST_MULTI_INDEX_CK_CTOR_ARG
williamr@2: #undef BOOST_MULTI_INDEX_CK_TEMPLATE_PARM
williamr@2: #undef BOOST_MULTI_INDEX_CK_ENUM_PARAMS
williamr@2: #undef BOOST_MULTI_INDEX_CK_ENUM
williamr@2: #undef BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE
williamr@2: 
williamr@2: #endif