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Diffstat (limited to '3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp b/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp new file mode 100644 index 0000000..727acab --- /dev/null +++ b/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp @@ -0,0 +1,510 @@ +// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. +// Use, modification and distribution are subject to 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/utility for most recent version including documentation. +// see libs/utility/compressed_pair.hpp +// +/* Release notes: + 20 Jan 2001: + Fixed obvious bugs (David Abrahams) + 07 Oct 2000: + Added better single argument constructor support. + 03 Oct 2000: + Added VC6 support (JM). + 23rd July 2000: + Additional comments added. (JM) + Jan 2000: + Original version: this version crippled for use with crippled compilers + - John Maddock Jan 2000. +*/ + + +#ifndef BOOST_OB_COMPRESSED_PAIR_HPP +#define BOOST_OB_COMPRESSED_PAIR_HPP + +#include <algorithm> +#ifndef BOOST_OBJECT_TYPE_TRAITS_HPP +#include <boost/type_traits/object_traits.hpp> +#endif +#ifndef BOOST_SAME_TRAITS_HPP +#include <boost/type_traits/same_traits.hpp> +#endif +#ifndef BOOST_CALL_TRAITS_HPP +#include <boost/call_traits.hpp> +#endif + +namespace boost +{ +#ifdef BOOST_MSVC6_MEMBER_TEMPLATES +// +// use member templates to emulate +// partial specialisation. Note that due to +// problems with overload resolution with VC6 +// each of the compressed_pair versions that follow +// have one template single-argument constructor +// in place of two specific constructors: +// + +template <class T1, class T2> +class compressed_pair; + +namespace detail{ + +template <class A, class T1, class T2> +struct best_conversion_traits +{ + typedef char one; + typedef char (&two)[2]; + static A a; + static one test(T1); + static two test(T2); + + enum { value = sizeof(test(a)) }; +}; + +template <int> +struct init_one; + +template <> +struct init_one<1> +{ + template <class A, class T1, class T2> + static void init(const A& a, T1* p1, T2*) + { + *p1 = a; + } +}; + +template <> +struct init_one<2> +{ + template <class A, class T1, class T2> + static void init(const A& a, T1*, T2* p2) + { + *p2 = a; + } +}; + + +// T1 != T2, both non-empty +template <class T1, class T2> +class compressed_pair_0 +{ +private: + T1 _first; + T2 _second; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_0() : _first(), _second() {} + compressed_pair_0(first_param_type x, second_param_type y) : _first(x), _second(y) {} + template <class A> + explicit compressed_pair_0(const A& val) + { + init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, &_second); + } + compressed_pair_0(const ::boost::compressed_pair<T1,T2>& x) + : _first(x.first()), _second(x.second()) {} + +#if 0 + compressed_pair_0& operator=(const compressed_pair_0& x) { + cout << "assigning compressed pair 0" << endl; + _first = x._first; + _second = x._second; + cout << "finished assigning compressed pair 0" << endl; + return *this; + } +#endif + + first_reference first() { return _first; } + first_const_reference first() const { return _first; } + + second_reference second() { return _second; } + second_const_reference second() const { return _second; } + + void swap(compressed_pair_0& y) + { + using std::swap; + swap(_first, y._first); + swap(_second, y._second); + } +}; + +// T1 != T2, T2 empty +template <class T1, class T2> +class compressed_pair_1 : T2 +{ +private: + T1 _first; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_1() : T2(), _first() {} + compressed_pair_1(first_param_type x, second_param_type y) : T2(y), _first(x) {} + + template <class A> + explicit compressed_pair_1(const A& val) + { + init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, static_cast<T2*>(this)); + } + + compressed_pair_1(const ::boost::compressed_pair<T1,T2>& x) + : T2(x.second()), _first(x.first()) {} + +#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 + // Total weirdness. If the assignment to _first is moved after + // the call to the inherited operator=, then this breaks graph/test/graph.cpp + // by way of iterator_adaptor. + compressed_pair_1& operator=(const compressed_pair_1& x) { + _first = x._first; + T2::operator=(x); + return *this; + } +#endif + + first_reference first() { return _first; } + first_const_reference first() const { return _first; } + + second_reference second() { return *this; } + second_const_reference second() const { return *this; } + + void swap(compressed_pair_1& y) + { + // no need to swap empty base class: + using std::swap; + swap(_first, y._first); + } +}; + +// T1 != T2, T1 empty +template <class T1, class T2> +class compressed_pair_2 : T1 +{ +private: + T2 _second; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_2() : T1(), _second() {} + compressed_pair_2(first_param_type x, second_param_type y) : T1(x), _second(y) {} + template <class A> + explicit compressed_pair_2(const A& val) + { + init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), &_second); + } + compressed_pair_2(const ::boost::compressed_pair<T1,T2>& x) + : T1(x.first()), _second(x.second()) {} + +#if 0 + compressed_pair_2& operator=(const compressed_pair_2& x) { + cout << "assigning compressed pair 2" << endl; + T1::operator=(x); + _second = x._second; + cout << "finished assigning compressed pair 2" << endl; + return *this; + } +#endif + first_reference first() { return *this; } + first_const_reference first() const { return *this; } + + second_reference second() { return _second; } + second_const_reference second() const { return _second; } + + void swap(compressed_pair_2& y) + { + // no need to swap empty base class: + using std::swap; + swap(_second, y._second); + } +}; + +// T1 != T2, both empty +template <class T1, class T2> +class compressed_pair_3 : T1, T2 +{ +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_3() : T1(), T2() {} + compressed_pair_3(first_param_type x, second_param_type y) : T1(x), T2(y) {} + template <class A> + explicit compressed_pair_3(const A& val) + { + init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), static_cast<T2*>(this)); + } + compressed_pair_3(const ::boost::compressed_pair<T1,T2>& x) + : T1(x.first()), T2(x.second()) {} + + first_reference first() { return *this; } + first_const_reference first() const { return *this; } + + second_reference second() { return *this; } + second_const_reference second() const { return *this; } + + void swap(compressed_pair_3& y) + { + // no need to swap empty base classes: + } +}; + +// T1 == T2, and empty +template <class T1, class T2> +class compressed_pair_4 : T1 +{ +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_4() : T1() {} + compressed_pair_4(first_param_type x, second_param_type y) : T1(x), m_second(y) {} + // only one single argument constructor since T1 == T2 + explicit compressed_pair_4(first_param_type x) : T1(x), m_second(x) {} + compressed_pair_4(const ::boost::compressed_pair<T1,T2>& x) + : T1(x.first()), m_second(x.second()) {} + + first_reference first() { return *this; } + first_const_reference first() const { return *this; } + + second_reference second() { return m_second; } + second_const_reference second() const { return m_second; } + + void swap(compressed_pair_4& y) + { + // no need to swap empty base classes: + } +private: + T2 m_second; +}; + +// T1 == T2, not empty +template <class T1, class T2> +class compressed_pair_5 +{ +private: + T1 _first; + T2 _second; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair_5() : _first(), _second() {} + compressed_pair_5(first_param_type x, second_param_type y) : _first(x), _second(y) {} + // only one single argument constructor since T1 == T2 + explicit compressed_pair_5(first_param_type x) : _first(x), _second(x) {} + compressed_pair_5(const ::boost::compressed_pair<T1,T2>& c) + : _first(c.first()), _second(c.second()) {} + + first_reference first() { return _first; } + first_const_reference first() const { return _first; } + + second_reference second() { return _second; } + second_const_reference second() const { return _second; } + + void swap(compressed_pair_5& y) + { + using std::swap; + swap(_first, y._first); + swap(_second, y._second); + } +}; + +template <bool e1, bool e2, bool same> +struct compressed_pair_chooser +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_0<T1, T2> type; + }; +}; + +template <> +struct compressed_pair_chooser<false, true, false> +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_1<T1, T2> type; + }; +}; + +template <> +struct compressed_pair_chooser<true, false, false> +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_2<T1, T2> type; + }; +}; + +template <> +struct compressed_pair_chooser<true, true, false> +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_3<T1, T2> type; + }; +}; + +template <> +struct compressed_pair_chooser<true, true, true> +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_4<T1, T2> type; + }; +}; + +template <> +struct compressed_pair_chooser<false, false, true> +{ + template <class T1, class T2> + struct rebind + { + typedef compressed_pair_5<T1, T2> type; + }; +}; + +template <class T1, class T2> +struct compressed_pair_traits +{ +private: + typedef compressed_pair_chooser<is_empty<T1>::value, is_empty<T2>::value, is_same<T1,T2>::value> chooser; + typedef typename chooser::template rebind<T1, T2> bound_type; +public: + typedef typename bound_type::type type; +}; + +} // namespace detail + +template <class T1, class T2> +class compressed_pair : public detail::compressed_pair_traits<T1, T2>::type +{ +private: + typedef typename detail::compressed_pair_traits<T1, T2>::type base_type; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair() : base_type() {} + compressed_pair(first_param_type x, second_param_type y) : base_type(x, y) {} + template <class A> + explicit compressed_pair(const A& x) : base_type(x){} + + first_reference first() { return base_type::first(); } + first_const_reference first() const { return base_type::first(); } + + second_reference second() { return base_type::second(); } + second_const_reference second() const { return base_type::second(); } +}; + +template <class T1, class T2> +inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y) +{ + x.swap(y); +} + +#else +// no partial specialisation, no member templates: + +template <class T1, class T2> +class compressed_pair +{ +private: + T1 _first; + T2 _second; +public: + typedef T1 first_type; + typedef T2 second_type; + typedef typename call_traits<first_type>::param_type first_param_type; + typedef typename call_traits<second_type>::param_type second_param_type; + typedef typename call_traits<first_type>::reference first_reference; + typedef typename call_traits<second_type>::reference second_reference; + typedef typename call_traits<first_type>::const_reference first_const_reference; + typedef typename call_traits<second_type>::const_reference second_const_reference; + + compressed_pair() : _first(), _second() {} + compressed_pair(first_param_type x, second_param_type y) : _first(x), _second(y) {} + explicit compressed_pair(first_param_type x) : _first(x), _second() {} + // can't define this in case T1 == T2: + // explicit compressed_pair(second_param_type y) : _first(), _second(y) {} + + first_reference first() { return _first; } + first_const_reference first() const { return _first; } + + second_reference second() { return _second; } + second_const_reference second() const { return _second; } + + void swap(compressed_pair& y) + { + using std::swap; + swap(_first, y._first); + swap(_second, y._second); + } +}; + +template <class T1, class T2> +inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y) +{ + x.swap(y); +} + +#endif + +} // boost + +#endif // BOOST_OB_COMPRESSED_PAIR_HPP + + + |