boost/multi_index/composite_key.hpp
/* Copyright 2003-2022 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_COMPOSITE_KEY_HPP #define BOOST_MULTI_INDEX_COMPOSITE_KEY_HPP #if defined(_MSC_VER) #pragma once #endif #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ #include <boost/container_hash/hash_fwd.hpp> #include <boost/core/enable_if.hpp> #include <boost/multi_index/detail/access_specifier.hpp> #include <boost/mpl/eval_if.hpp> #include <boost/mpl/identity.hpp> #include <boost/mpl/if.hpp> #include <boost/mpl/or.hpp> #include <boost/preprocessor/cat.hpp> #include <boost/preprocessor/control/expr_if.hpp> #include <boost/preprocessor/list/at.hpp> #include <boost/preprocessor/repetition/enum.hpp> #include <boost/preprocessor/repetition/enum_params.hpp> #include <boost/static_assert.hpp> #include <boost/tuple/tuple.hpp> #include <boost/type_traits/is_same.hpp> #include <functional> #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) #include <boost/core/ref.hpp> #endif #if !defined(BOOST_NO_SFINAE) #include <boost/type_traits/is_convertible.hpp> #endif #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) #include <boost/multi_index/detail/cons_stdtuple.hpp> #endif /* A composite key stores n key extractors and "computes" the * result on a given value as a packed reference to the value and * the composite key itself. Actual invocations to the component * key extractors are lazily performed when executing an operation * on composite_key results (equality, comparison, hashing.) * As the other key extractors in Boost.MultiIndex, composite_key<T,...> * is overloaded to work on chained pointers to T and reference_wrappers * of T. */ /* This user_definable macro limits the number of elements of a composite * key; useful for shortening resulting symbol names (MSVC++ 6.0, for * instance has problems coping with very long symbol names.) * NB: This cannot exceed the maximum number of arguments of * boost::tuple. In Boost 1.32, the limit is 10. */ #if !defined(BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE) #define BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE 10 #endif /* maximum number of key extractors in a composite key */ #if BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE<10 /* max length of a tuple */ #define BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE \ BOOST_MULTI_INDEX_LIMIT_COMPOSITE_KEY_SIZE #else #define BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE 10 #endif /* BOOST_PP_ENUM of BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE elements */ #define BOOST_MULTI_INDEX_CK_ENUM(macro,data) \ BOOST_PP_ENUM(BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE,macro,data) /* BOOST_PP_ENUM_PARAMS of BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE elements */ #define BOOST_MULTI_INDEX_CK_ENUM_PARAMS(param) \ BOOST_PP_ENUM_PARAMS(BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE,param) /* if n==0 -> text0 * otherwise -> textn=tuples::null_type */ #define BOOST_MULTI_INDEX_CK_TEMPLATE_PARM(z,n,text) \ typename BOOST_PP_CAT(text,n) BOOST_PP_EXPR_IF(n,=tuples::null_type) /* const textn& kn=textn() */ #define BOOST_MULTI_INDEX_CK_CTOR_ARG(z,n,text) \ const BOOST_PP_CAT(text,n)& BOOST_PP_CAT(k,n) = BOOST_PP_CAT(text,n)() /* typename list(0)<list(1),n>::type */ #define BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N(z,n,list) \ BOOST_DEDUCED_TYPENAME BOOST_PP_LIST_AT(list,0)< \ BOOST_PP_LIST_AT(list,1),n \ >::type namespace boost{ template<class T> class reference_wrapper; /* fwd decl. */ namespace multi_index{ namespace detail{ /* n-th key extractor of a composite key */ template<typename CompositeKey,int N> struct nth_key_from_value { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename mpl::eval_if_c< N<tuples::length<key_extractor_tuple>::value, tuples::element<N,key_extractor_tuple>, mpl::identity<tuples::null_type> >::type type; }; /* nth_composite_key_##name<CompositeKey,N>::type yields * functor<nth_key_from_value<CompositeKey,N> >, or tuples::null_type * if N exceeds the length of the composite key. */ #define BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(name,functor) \ template<typename KeyFromValue> \ struct BOOST_PP_CAT(key_,name) \ { \ typedef functor<typename KeyFromValue::result_type> type; \ }; \ \ template<> \ struct BOOST_PP_CAT(key_,name)<tuples::null_type> \ { \ typedef tuples::null_type type; \ }; \ \ template<typename CompositeKey,int N> \ struct BOOST_PP_CAT(nth_composite_key_,name) \ { \ typedef typename nth_key_from_value<CompositeKey,N>::type key_from_value; \ typedef typename BOOST_PP_CAT(key_,name)<key_from_value>::type type; \ }; /* nth_composite_key_equal_to * nth_composite_key_less * nth_composite_key_greater * nth_composite_key_hash */ BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(equal_to,std::equal_to) BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(less,std::less) BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(greater,std::greater) BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR(hash,boost::hash) /* used for defining equality and comparison ops of composite_key_result */ #define BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO(z,n,text) text struct generic_operator_equal { template<typename T,typename Q> bool operator()(const T& x,const Q& y)const{return x==y;} }; typedef tuple< BOOST_MULTI_INDEX_CK_ENUM( BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO, detail::generic_operator_equal)> generic_operator_equal_tuple; struct generic_operator_less { template<typename T,typename Q> bool operator()(const T& x,const Q& y)const{return x<y;} }; typedef tuple< BOOST_MULTI_INDEX_CK_ENUM( BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO, detail::generic_operator_less)> generic_operator_less_tuple; /* Metaprogramming machinery for implementing equality, comparison and * hashing operations of composite_key_result. * * equal_* checks for equality between composite_key_results and * between those and tuples, accepting a tuple of basic equality functors. * compare_* does lexicographical comparison. * hash_* computes a combination of elementwise hash values. */ template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename EqualCons > struct equal_ckey_ckey; /* fwd decl. */ template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename EqualCons > struct equal_ckey_ckey_terminal { static bool compare( const KeyCons1&,const Value1&, const KeyCons2&,const Value2&, const EqualCons&) { return true; } }; template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename EqualCons > struct equal_ckey_ckey_normal { static bool compare( const KeyCons1& c0,const Value1& v0, const KeyCons2& c1,const Value2& v1, const EqualCons& eq) { if(!eq.get_head()(c0.get_head()(v0),c1.get_head()(v1)))return false; return equal_ckey_ckey< BOOST_DEDUCED_TYPENAME KeyCons1::tail_type,Value1, BOOST_DEDUCED_TYPENAME KeyCons2::tail_type,Value2, BOOST_DEDUCED_TYPENAME EqualCons::tail_type >::compare(c0.get_tail(),v0,c1.get_tail(),v1,eq.get_tail()); } }; template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename EqualCons > struct equal_ckey_ckey: mpl::if_< mpl::or_< is_same<KeyCons1,tuples::null_type>, is_same<KeyCons2,tuples::null_type> >, equal_ckey_ckey_terminal<KeyCons1,Value1,KeyCons2,Value2,EqualCons>, equal_ckey_ckey_normal<KeyCons1,Value1,KeyCons2,Value2,EqualCons> >::type { }; template < typename KeyCons,typename Value, typename ValCons,typename EqualCons > struct equal_ckey_cval; /* fwd decl. */ template < typename KeyCons,typename Value, typename ValCons,typename EqualCons > struct equal_ckey_cval_terminal { static bool compare( const KeyCons&,const Value&,const ValCons&,const EqualCons&) { return true; } static bool compare( const ValCons&,const KeyCons&,const Value&,const EqualCons&) { return true; } }; template < typename KeyCons,typename Value, typename ValCons,typename EqualCons > struct equal_ckey_cval_normal { static bool compare( const KeyCons& c,const Value& v,const ValCons& vc, const EqualCons& eq) { if(!eq.get_head()(c.get_head()(v),vc.get_head()))return false; return equal_ckey_cval< BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value, BOOST_DEDUCED_TYPENAME ValCons::tail_type, BOOST_DEDUCED_TYPENAME EqualCons::tail_type >::compare(c.get_tail(),v,vc.get_tail(),eq.get_tail()); } static bool compare( const ValCons& vc,const KeyCons& c,const Value& v, const EqualCons& eq) { if(!eq.get_head()(vc.get_head(),c.get_head()(v)))return false; return equal_ckey_cval< BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value, BOOST_DEDUCED_TYPENAME ValCons::tail_type, BOOST_DEDUCED_TYPENAME EqualCons::tail_type >::compare(vc.get_tail(),c.get_tail(),v,eq.get_tail()); } }; template < typename KeyCons,typename Value, typename ValCons,typename EqualCons > struct equal_ckey_cval: mpl::if_< mpl::or_< is_same<KeyCons,tuples::null_type>, is_same<ValCons,tuples::null_type> >, equal_ckey_cval_terminal<KeyCons,Value,ValCons,EqualCons>, equal_ckey_cval_normal<KeyCons,Value,ValCons,EqualCons> >::type { }; template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename CompareCons > struct compare_ckey_ckey; /* fwd decl. */ template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename CompareCons > struct compare_ckey_ckey_terminal { static bool compare( const KeyCons1&,const Value1&, const KeyCons2&,const Value2&, const CompareCons&) { return false; } }; template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename CompareCons > struct compare_ckey_ckey_normal { static bool compare( const KeyCons1& c0,const Value1& v0, const KeyCons2& c1,const Value2& v1, const CompareCons& comp) { if(comp.get_head()(c0.get_head()(v0),c1.get_head()(v1)))return true; if(comp.get_head()(c1.get_head()(v1),c0.get_head()(v0)))return false; return compare_ckey_ckey< BOOST_DEDUCED_TYPENAME KeyCons1::tail_type,Value1, BOOST_DEDUCED_TYPENAME KeyCons2::tail_type,Value2, BOOST_DEDUCED_TYPENAME CompareCons::tail_type >::compare(c0.get_tail(),v0,c1.get_tail(),v1,comp.get_tail()); } }; template < typename KeyCons1,typename Value1, typename KeyCons2, typename Value2, typename CompareCons > struct compare_ckey_ckey: mpl::if_< mpl::or_< is_same<KeyCons1,tuples::null_type>, is_same<KeyCons2,tuples::null_type> >, compare_ckey_ckey_terminal<KeyCons1,Value1,KeyCons2,Value2,CompareCons>, compare_ckey_ckey_normal<KeyCons1,Value1,KeyCons2,Value2,CompareCons> >::type { }; template < typename KeyCons,typename Value, typename ValCons,typename CompareCons > struct compare_ckey_cval; /* fwd decl. */ template < typename KeyCons,typename Value, typename ValCons,typename CompareCons > struct compare_ckey_cval_terminal { static bool compare( const KeyCons&,const Value&,const ValCons&,const CompareCons&) { return false; } static bool compare( const ValCons&,const KeyCons&,const Value&,const CompareCons&) { return false; } }; template < typename KeyCons,typename Value, typename ValCons,typename CompareCons > struct compare_ckey_cval_normal { static bool compare( const KeyCons& c,const Value& v,const ValCons& vc, const CompareCons& comp) { if(comp.get_head()(c.get_head()(v),vc.get_head()))return true; if(comp.get_head()(vc.get_head(),c.get_head()(v)))return false; return compare_ckey_cval< BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value, BOOST_DEDUCED_TYPENAME ValCons::tail_type, BOOST_DEDUCED_TYPENAME CompareCons::tail_type >::compare(c.get_tail(),v,vc.get_tail(),comp.get_tail()); } static bool compare( const ValCons& vc,const KeyCons& c,const Value& v, const CompareCons& comp) { if(comp.get_head()(vc.get_head(),c.get_head()(v)))return true; if(comp.get_head()(c.get_head()(v),vc.get_head()))return false; return compare_ckey_cval< BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value, BOOST_DEDUCED_TYPENAME ValCons::tail_type, BOOST_DEDUCED_TYPENAME CompareCons::tail_type >::compare(vc.get_tail(),c.get_tail(),v,comp.get_tail()); } }; template < typename KeyCons,typename Value, typename ValCons,typename CompareCons > struct compare_ckey_cval: mpl::if_< mpl::or_< is_same<KeyCons,tuples::null_type>, is_same<ValCons,tuples::null_type> >, compare_ckey_cval_terminal<KeyCons,Value,ValCons,CompareCons>, compare_ckey_cval_normal<KeyCons,Value,ValCons,CompareCons> >::type { }; template<typename KeyCons,typename Value,typename HashCons> struct hash_ckey; /* fwd decl. */ template<typename KeyCons,typename Value,typename HashCons> struct hash_ckey_terminal { static std::size_t hash( const KeyCons&,const Value&,const HashCons&,std::size_t carry) { return carry; } }; template<typename KeyCons,typename Value,typename HashCons> struct hash_ckey_normal { static std::size_t hash( const KeyCons& c,const Value& v,const HashCons& h,std::size_t carry=0) { /* same hashing formula as boost::hash_combine */ carry^=h.get_head()(c.get_head()(v))+0x9e3779b9+(carry<<6)+(carry>>2); return hash_ckey< BOOST_DEDUCED_TYPENAME KeyCons::tail_type,Value, BOOST_DEDUCED_TYPENAME HashCons::tail_type >::hash(c.get_tail(),v,h.get_tail(),carry); } }; template<typename KeyCons,typename Value,typename HashCons> struct hash_ckey: mpl::if_< is_same<KeyCons,tuples::null_type>, hash_ckey_terminal<KeyCons,Value,HashCons>, hash_ckey_normal<KeyCons,Value,HashCons> >::type { }; template<typename ValCons,typename HashCons> struct hash_cval; /* fwd decl. */ template<typename ValCons,typename HashCons> struct hash_cval_terminal { static std::size_t hash(const ValCons&,const HashCons&,std::size_t carry) { return carry; } }; template<typename ValCons,typename HashCons> struct hash_cval_normal { static std::size_t hash( const ValCons& vc,const HashCons& h,std::size_t carry=0) { carry^=h.get_head()(vc.get_head())+0x9e3779b9+(carry<<6)+(carry>>2); return hash_cval< BOOST_DEDUCED_TYPENAME ValCons::tail_type, BOOST_DEDUCED_TYPENAME HashCons::tail_type >::hash(vc.get_tail(),h.get_tail(),carry); } }; template<typename ValCons,typename HashCons> struct hash_cval: mpl::if_< is_same<ValCons,tuples::null_type>, hash_cval_terminal<ValCons,HashCons>, hash_cval_normal<ValCons,HashCons> >::type { }; } /* namespace multi_index::detail */ /* composite_key_result */ #if defined(BOOST_MSVC) #pragma warning(push) #pragma warning(disable:4512) #endif template<typename CompositeKey> struct composite_key_result { typedef CompositeKey composite_key_type; typedef typename composite_key_type::value_type value_type; composite_key_result( const composite_key_type& composite_key_,const value_type& value_): composite_key(composite_key_),value(value_) {} const composite_key_type& composite_key; const value_type& value; }; #if defined(BOOST_MSVC) #pragma warning(pop) #endif /* composite_key */ template< typename Value, BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,KeyFromValue) > struct composite_key: private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(KeyFromValue)> { private: typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(KeyFromValue)> super; public: typedef super key_extractor_tuple; typedef Value value_type; typedef composite_key_result<composite_key> result_type; composite_key( BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,KeyFromValue)): super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k)) {} composite_key(const key_extractor_tuple& x):super(x){} const key_extractor_tuple& key_extractors()const{return *this;} key_extractor_tuple& key_extractors(){return *this;} template<typename ChainedPtr> #if !defined(BOOST_NO_SFINAE) typename disable_if< is_convertible<const ChainedPtr&,const value_type&>,result_type>::type #else result_type #endif operator()(const ChainedPtr& x)const { return operator()(*x); } result_type operator()(const value_type& x)const { return result_type(*this,x); } result_type operator()(const reference_wrapper<const value_type>& x)const { return result_type(*this,x.get()); } result_type operator()(const reference_wrapper<value_type>& x)const { return result_type(*this,x.get()); } }; /* comparison operators */ /* == */ template<typename CompositeKey1,typename CompositeKey2> inline bool operator==( const composite_key_result<CompositeKey1>& x, const composite_key_result<CompositeKey2>& y) { typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1; typedef typename CompositeKey1::value_type value_type1; typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2; typedef typename CompositeKey2::value_type value_type2; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple1>::value== tuples::length<key_extractor_tuple2>::value); return detail::equal_ckey_ckey< key_extractor_tuple1,value_type1, key_extractor_tuple2,value_type2, detail::generic_operator_equal_tuple >::compare( x.composite_key.key_extractors(),x.value, y.composite_key.key_extractors(),y.value, detail::generic_operator_equal_tuple()); } template< typename CompositeKey, BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value) > inline bool operator==( const composite_key_result<CompositeKey>& x, const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value== tuples::length<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, key_tuple,detail::generic_operator_equal_tuple >::compare( x.composite_key.key_extractors(),x.value, y,detail::generic_operator_equal_tuple()); } template < BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), typename CompositeKey > inline bool operator==( const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x, const composite_key_result<CompositeKey>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value== tuples::length<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, key_tuple,detail::generic_operator_equal_tuple >::compare( x,y.composite_key.key_extractors(), y.value,detail::generic_operator_equal_tuple()); } #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) template<typename CompositeKey,typename... Values> inline bool operator==( const composite_key_result<CompositeKey>& x, const std::tuple<Values...>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( static_cast<std::size_t>(tuples::length<key_extractor_tuple>::value)== std::tuple_size<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,detail::generic_operator_equal_tuple >::compare( x.composite_key.key_extractors(),x.value, detail::make_cons_stdtuple(y),detail::generic_operator_equal_tuple()); } template<typename CompositeKey,typename... Values> inline bool operator==( const std::tuple<Values...>& x, const composite_key_result<CompositeKey>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( static_cast<std::size_t>(tuples::length<key_extractor_tuple>::value)== std::tuple_size<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,detail::generic_operator_equal_tuple >::compare( detail::make_cons_stdtuple(x),y.composite_key.key_extractors(), y.value,detail::generic_operator_equal_tuple()); } #endif /* < */ template<typename CompositeKey1,typename CompositeKey2> inline bool operator<( const composite_key_result<CompositeKey1>& x, const composite_key_result<CompositeKey2>& y) { typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1; typedef typename CompositeKey1::value_type value_type1; typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2; typedef typename CompositeKey2::value_type value_type2; return detail::compare_ckey_ckey< key_extractor_tuple1,value_type1, key_extractor_tuple2,value_type2, detail::generic_operator_less_tuple >::compare( x.composite_key.key_extractors(),x.value, y.composite_key.key_extractors(),y.value, detail::generic_operator_less_tuple()); } template < typename CompositeKey, BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value) > inline bool operator<( const composite_key_result<CompositeKey>& x, const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; return detail::compare_ckey_cval< key_extractor_tuple,value_type, key_tuple,detail::generic_operator_less_tuple >::compare( x.composite_key.key_extractors(),x.value, y,detail::generic_operator_less_tuple()); } template < BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), typename CompositeKey > inline bool operator<( const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x, const composite_key_result<CompositeKey>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; return detail::compare_ckey_cval< key_extractor_tuple,value_type, key_tuple,detail::generic_operator_less_tuple >::compare( x,y.composite_key.key_extractors(), y.value,detail::generic_operator_less_tuple()); } #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) template<typename CompositeKey,typename... Values> inline bool operator<( const composite_key_result<CompositeKey>& x, const std::tuple<Values...>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; return detail::compare_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,detail::generic_operator_less_tuple >::compare( x.composite_key.key_extractors(),x.value, detail::make_cons_stdtuple(y),detail::generic_operator_less_tuple()); } template<typename CompositeKey,typename... Values> inline bool operator<( const std::tuple<Values...>& x, const composite_key_result<CompositeKey>& y) { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; return detail::compare_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,detail::generic_operator_less_tuple >::compare( detail::make_cons_stdtuple(x),y.composite_key.key_extractors(), y.value,detail::generic_operator_less_tuple()); } #endif /* rest of comparison operators */ #define BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS(t1,t2,a1,a2) \ template<t1,t2> inline bool operator!=(const a1& x,const a2& y) \ { \ return !(x==y); \ } \ \ template<t1,t2> inline bool operator>(const a1& x,const a2& y) \ { \ return y<x; \ } \ \ template<t1,t2> inline bool operator>=(const a1& x,const a2& y) \ { \ return !(x<y); \ } \ \ template<t1,t2> inline bool operator<=(const a1& x,const a2& y) \ { \ return !(y<x); \ } BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS( typename CompositeKey1, typename CompositeKey2, composite_key_result<CompositeKey1>, composite_key_result<CompositeKey2> ) BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS( typename CompositeKey, BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), composite_key_result<CompositeKey>, tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> ) BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS( BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), typename CompositeKey, tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>, composite_key_result<CompositeKey> ) #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS( typename CompositeKey, typename... Values, composite_key_result<CompositeKey>, std::tuple<Values...> ) BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS( typename CompositeKey, typename... Values, std::tuple<Values...>, composite_key_result<CompositeKey> ) #endif /* composite_key_equal_to */ template < BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Pred) > struct composite_key_equal_to: private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Pred)> { private: typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Pred)> super; public: typedef super key_eq_tuple; composite_key_equal_to( BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Pred)): super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k)) {} composite_key_equal_to(const key_eq_tuple& x):super(x){} const key_eq_tuple& key_eqs()const{return *this;} key_eq_tuple& key_eqs(){return *this;} template<typename CompositeKey1,typename CompositeKey2> bool operator()( const composite_key_result<CompositeKey1> & x, const composite_key_result<CompositeKey2> & y)const { typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1; typedef typename CompositeKey1::value_type value_type1; typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2; typedef typename CompositeKey2::value_type value_type2; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple1>::value<= tuples::length<key_eq_tuple>::value&& tuples::length<key_extractor_tuple1>::value== tuples::length<key_extractor_tuple2>::value); return detail::equal_ckey_ckey< key_extractor_tuple1,value_type1, key_extractor_tuple2,value_type2, key_eq_tuple >::compare( x.composite_key.key_extractors(),x.value, y.composite_key.key_extractors(),y.value, key_eqs()); } template < typename CompositeKey, BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value) > bool operator()( const composite_key_result<CompositeKey>& x, const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value<= tuples::length<key_eq_tuple>::value&& tuples::length<key_extractor_tuple>::value== tuples::length<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, key_tuple,key_eq_tuple >::compare(x.composite_key.key_extractors(),x.value,y,key_eqs()); } template < BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), typename CompositeKey > bool operator()( const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x, const composite_key_result<CompositeKey>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_tuple>::value<= tuples::length<key_eq_tuple>::value&& tuples::length<key_tuple>::value== tuples::length<key_extractor_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, key_tuple,key_eq_tuple >::compare(x,y.composite_key.key_extractors(),y.value,key_eqs()); } #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) template<typename CompositeKey,typename... Values> bool operator()( const composite_key_result<CompositeKey>& x, const std::tuple<Values...>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value<= tuples::length<key_eq_tuple>::value&& static_cast<std::size_t>(tuples::length<key_extractor_tuple>::value)== std::tuple_size<key_tuple>::value); return detail::equal_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,key_eq_tuple >::compare( x.composite_key.key_extractors(),x.value, detail::make_cons_stdtuple(y),key_eqs()); } template<typename CompositeKey,typename... Values> bool operator()( const std::tuple<Values...>& x, const composite_key_result<CompositeKey>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( std::tuple_size<key_tuple>::value<= static_cast<std::size_t>(tuples::length<key_eq_tuple>::value)&& std::tuple_size<key_tuple>::value== static_cast<std::size_t>(tuples::length<key_extractor_tuple>::value)); return detail::equal_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,key_eq_tuple >::compare( detail::make_cons_stdtuple(x),y.composite_key.key_extractors(), y.value,key_eqs()); } #endif }; /* composite_key_compare */ template < BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Compare) > struct composite_key_compare: private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Compare)> { private: typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Compare)> super; public: typedef super key_comp_tuple; composite_key_compare( BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Compare)): super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k)) {} composite_key_compare(const key_comp_tuple& x):super(x){} const key_comp_tuple& key_comps()const{return *this;} key_comp_tuple& key_comps(){return *this;} template<typename CompositeKey1,typename CompositeKey2> bool operator()( const composite_key_result<CompositeKey1> & x, const composite_key_result<CompositeKey2> & y)const { typedef typename CompositeKey1::key_extractor_tuple key_extractor_tuple1; typedef typename CompositeKey1::value_type value_type1; typedef typename CompositeKey2::key_extractor_tuple key_extractor_tuple2; typedef typename CompositeKey2::value_type value_type2; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple1>::value<= tuples::length<key_comp_tuple>::value|| tuples::length<key_extractor_tuple2>::value<= tuples::length<key_comp_tuple>::value); return detail::compare_ckey_ckey< key_extractor_tuple1,value_type1, key_extractor_tuple2,value_type2, key_comp_tuple >::compare( x.composite_key.key_extractors(),x.value, y.composite_key.key_extractors(),y.value, key_comps()); } #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) template<typename CompositeKey,typename Value> bool operator()( const composite_key_result<CompositeKey>& x, const Value& y)const { return operator()(x,boost::make_tuple(boost::cref(y))); } #endif template < typename CompositeKey, BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value) > bool operator()( const composite_key_result<CompositeKey>& x, const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value<= tuples::length<key_comp_tuple>::value|| tuples::length<key_tuple>::value<= tuples::length<key_comp_tuple>::value); return detail::compare_ckey_cval< key_extractor_tuple,value_type, key_tuple,key_comp_tuple >::compare(x.composite_key.key_extractors(),x.value,y,key_comps()); } #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) template<typename Value,typename CompositeKey> bool operator()( const Value& x, const composite_key_result<CompositeKey>& y)const { return operator()(boost::make_tuple(boost::cref(x)),y); } #endif template < BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value), typename CompositeKey > bool operator()( const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x, const composite_key_result<CompositeKey>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_tuple>::value<= tuples::length<key_comp_tuple>::value|| tuples::length<key_extractor_tuple>::value<= tuples::length<key_comp_tuple>::value); return detail::compare_ckey_cval< key_extractor_tuple,value_type, key_tuple,key_comp_tuple >::compare(x,y.composite_key.key_extractors(),y.value,key_comps()); } #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) template<typename CompositeKey,typename... Values> bool operator()( const composite_key_result<CompositeKey>& x, const std::tuple<Values...>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value<= tuples::length<key_comp_tuple>::value|| std::tuple_size<key_tuple>::value<= static_cast<std::size_t>(tuples::length<key_comp_tuple>::value)); return detail::compare_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,key_comp_tuple >::compare( x.composite_key.key_extractors(),x.value, detail::make_cons_stdtuple(y),key_comps()); } template<typename CompositeKey,typename... Values> bool operator()( const std::tuple<Values...>& x, const composite_key_result<CompositeKey>& y)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( std::tuple_size<key_tuple>::value<= static_cast<std::size_t>(tuples::length<key_comp_tuple>::value)|| tuples::length<key_extractor_tuple>::value<= tuples::length<key_comp_tuple>::value); return detail::compare_ckey_cval< key_extractor_tuple,value_type, cons_key_tuple,key_comp_tuple >::compare( detail::make_cons_stdtuple(x),y.composite_key.key_extractors(), y.value,key_comps()); } #endif }; /* composite_key_hash */ template < BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_TEMPLATE_PARM,Hash) > struct composite_key_hash: private tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Hash)> { private: typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Hash)> super; public: typedef super key_hasher_tuple; composite_key_hash( BOOST_MULTI_INDEX_CK_ENUM(BOOST_MULTI_INDEX_CK_CTOR_ARG,Hash)): super(BOOST_MULTI_INDEX_CK_ENUM_PARAMS(k)) {} composite_key_hash(const key_hasher_tuple& x):super(x){} const key_hasher_tuple& key_hash_functions()const{return *this;} key_hasher_tuple& key_hash_functions(){return *this;} template<typename CompositeKey> std::size_t operator()(const composite_key_result<CompositeKey> & x)const { typedef typename CompositeKey::key_extractor_tuple key_extractor_tuple; typedef typename CompositeKey::value_type value_type; BOOST_STATIC_ASSERT( tuples::length<key_extractor_tuple>::value== tuples::length<key_hasher_tuple>::value); return detail::hash_ckey< key_extractor_tuple,value_type, key_hasher_tuple >::hash(x.composite_key.key_extractors(),x.value,key_hash_functions()); } template<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(typename Value)> std::size_t operator()( const tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)>& x)const { typedef tuple<BOOST_MULTI_INDEX_CK_ENUM_PARAMS(Value)> key_tuple; BOOST_STATIC_ASSERT( tuples::length<key_tuple>::value== tuples::length<key_hasher_tuple>::value); return detail::hash_cval< key_tuple,key_hasher_tuple >::hash(x,key_hash_functions()); } #if !defined(BOOST_NO_CXX11_HDR_TUPLE)&&\ !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) template<typename... Values> std::size_t operator()(const std::tuple<Values...>& x)const { typedef std::tuple<Values...> key_tuple; typedef typename detail::cons_stdtuple_ctor< key_tuple>::result_type cons_key_tuple; BOOST_STATIC_ASSERT( std::tuple_size<key_tuple>::value== static_cast<std::size_t>(tuples::length<key_hasher_tuple>::value)); return detail::hash_cval< cons_key_tuple,key_hasher_tuple >::hash(detail::make_cons_stdtuple(x),key_hash_functions()); } #endif }; /* Instantiations of the former functors with "natural" basic components: * composite_key_result_equal_to uses std::equal_to of the values. * composite_key_result_less uses std::less. * composite_key_result_greater uses std::greater. * composite_key_result_hash uses boost::hash. */ #define BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER \ composite_key_equal_to< \ BOOST_MULTI_INDEX_CK_ENUM( \ BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N, \ /* the argument is a PP list */ \ (detail::nth_composite_key_equal_to, \ (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type, \ BOOST_PP_NIL))) \ > template<typename CompositeKeyResult> struct composite_key_result_equal_to: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER { private: typedef BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER super; public: typedef CompositeKeyResult first_argument_type; typedef first_argument_type second_argument_type; typedef bool result_type; using super::operator(); }; #define BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER \ composite_key_compare< \ BOOST_MULTI_INDEX_CK_ENUM( \ BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N, \ /* the argument is a PP list */ \ (detail::nth_composite_key_less, \ (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type, \ BOOST_PP_NIL))) \ > template<typename CompositeKeyResult> struct composite_key_result_less: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER { private: typedef BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER super; public: typedef CompositeKeyResult first_argument_type; typedef first_argument_type second_argument_type; typedef bool result_type; using super::operator(); }; #define BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER \ composite_key_compare< \ BOOST_MULTI_INDEX_CK_ENUM( \ BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N, \ /* the argument is a PP list */ \ (detail::nth_composite_key_greater, \ (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type, \ BOOST_PP_NIL))) \ > template<typename CompositeKeyResult> struct composite_key_result_greater: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER { private: typedef BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER super; public: typedef CompositeKeyResult first_argument_type; typedef first_argument_type second_argument_type; typedef bool result_type; using super::operator(); }; #define BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER \ composite_key_hash< \ BOOST_MULTI_INDEX_CK_ENUM( \ BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N, \ /* the argument is a PP list */ \ (detail::nth_composite_key_hash, \ (BOOST_DEDUCED_TYPENAME CompositeKeyResult::composite_key_type, \ BOOST_PP_NIL))) \ > template<typename CompositeKeyResult> struct composite_key_result_hash: BOOST_MULTI_INDEX_PRIVATE_IF_USING_DECL_FOR_TEMPL_FUNCTIONS BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER { private: typedef BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER super; public: typedef CompositeKeyResult argument_type; typedef std::size_t result_type; using super::operator(); }; } /* namespace multi_index */ } /* namespace boost */ /* Specializations of std::equal_to, std::less, std::greater and boost::hash * for composite_key_results enabling interoperation with tuples of values. */ namespace std{ template<typename CompositeKey> struct equal_to<boost::multi_index::composite_key_result<CompositeKey> >: boost::multi_index::composite_key_result_equal_to< boost::multi_index::composite_key_result<CompositeKey> > { }; template<typename CompositeKey> struct less<boost::multi_index::composite_key_result<CompositeKey> >: boost::multi_index::composite_key_result_less< boost::multi_index::composite_key_result<CompositeKey> > { }; template<typename CompositeKey> struct greater<boost::multi_index::composite_key_result<CompositeKey> >: boost::multi_index::composite_key_result_greater< boost::multi_index::composite_key_result<CompositeKey> > { }; } /* namespace std */ namespace boost{ template<typename CompositeKey> struct hash<boost::multi_index::composite_key_result<CompositeKey> >: boost::multi_index::composite_key_result_hash< boost::multi_index::composite_key_result<CompositeKey> > { }; } /* namespace boost */ #undef BOOST_MULTI_INDEX_CK_RESULT_HASH_SUPER #undef BOOST_MULTI_INDEX_CK_RESULT_GREATER_SUPER #undef BOOST_MULTI_INDEX_CK_RESULT_LESS_SUPER #undef BOOST_MULTI_INDEX_CK_RESULT_EQUAL_TO_SUPER #undef BOOST_MULTI_INDEX_CK_COMPLETE_COMP_OPS #undef BOOST_MULTI_INDEX_CK_IDENTITY_ENUM_MACRO #undef BOOST_MULTI_INDEX_CK_NTH_COMPOSITE_KEY_FUNCTOR #undef BOOST_MULTI_INDEX_CK_APPLY_METAFUNCTION_N #undef BOOST_MULTI_INDEX_CK_CTOR_ARG #undef BOOST_MULTI_INDEX_CK_TEMPLATE_PARM #undef BOOST_MULTI_INDEX_CK_ENUM_PARAMS #undef BOOST_MULTI_INDEX_CK_ENUM #undef BOOST_MULTI_INDEX_COMPOSITE_KEY_SIZE #endif