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// - tuple_basic_no_partial_spec.hpp -----------------------------------------
// Copyright (C) 1999, 2000 Jaakko Järvi (jaakko.jarvi@cs.utu.fi)
// Copyright (C) 2001 Doug Gregor (gregod@rpi.edu)
// Copyright (C) 2001 Gary Powell (gary.powell@sierra.com)
//
// Permission to copy, use, sell and distribute this software is granted
// provided this copyright notice appears in all copies.
// Permission to modify the code and to distribute modified code is granted
// provided this copyright notice appears in all copies, and a notice
// that the code was modified is included with the copyright notice.
//
// This software is provided "as is" without express or implied warranty,
// and with no claim as to its suitability for any purpose.
// For more information, see http://www.boost.org or http://lambda.cs.utu.fi
// Revision History
// 14 02 01 Remove extra ';'. Also, fixed 10-parameter to make_tuple. (DG)
// 10 02 01 Fixed "null_type" constructors.
// Implemented comparison operators globally.
// Hide element_type_ref and element_type_const_ref.
// (DG).
// 09 02 01 Extended to tuples of length 10. Changed comparison for
// operator<()
// to the same used by std::pair<>, added cnull_type() (GP)
// 03 02 01 Initial Version from original tuple.hpp code by JJ. (DG)
// -----------------------------------------------------------------
#ifndef BOOST_TUPLE_BASIC_NO_PARTIAL_SPEC_HPP
#define BOOST_TUPLE_BASIC_NO_PARTIAL_SPEC_HPP
#include "boost/type_traits.hpp"
#if defined BOOST_MSVC
#pragma warning(disable:4518) // storage-class or type specifier(s) unexpected here; ignored
#pragma warning(disable:4181) // qualifier applied to reference type ignored
#pragma warning(disable:4227) // qualifier applied to reference type ignored
#endif
namespace boost {
// null_type denotes the end of a list built with "cons"
struct null_type
{
null_type() {}
null_type(const null_type&, const null_type&) {}
};
// a helper function to provide a const null_type type temporary
inline const null_type cnull_type() { return null_type(); }
namespace detail {
namespace tuples {
// Takes a pointer and routes all assignments to whatever it points to
template<typename T>
struct assign_to_pointee
{
public:
explicit assign_to_pointee(T* p) : ptr(p) {}
template<typename Other>
assign_to_pointee& operator=(const Other& other)
{
*ptr = other;
return *this;
}
private:
T* ptr;
};
// Swallows any assignment
struct swallow_assign
{
template<typename T>
swallow_assign& operator=(const T&)
{
return *this;
}
};
} // end of namespace tuples
} // end of namespace detail
// cons builds a heterogenous list of types
template<typename Head, typename Tail = null_type>
struct cons
{
typedef cons self_type;
typedef Head head_type;
typedef Tail tail_type;
head_type head;
tail_type tail;
typename boost::add_reference<head_type>::type get_head() { return head; }
typename boost::add_reference<tail_type>::type get_tail() { return tail; }
typename boost::add_reference<const head_type>::type get_head() const { return head; }
typename boost::add_reference<const tail_type>::type get_tail() const { return tail; }
template<typename Other>
explicit cons(const Other& other) : head(other.head), tail(other.tail)
{
}
#if defined BOOST_MSVC
explicit cons(const head_type& h /* = head_type() */, // causes MSVC 6.5 to barf.
const tail_type& t = tail_type()) :
head(h), tail(t)
{
}
#else
explicit cons(const head_type& h = head_type(),
const tail_type& t = tail_type()) :
head(h), tail(t)
{
}
#endif
template<typename Other>
cons& operator=(const Other& other)
{
head = other.head;
tail = other.tail;
return *this;
}
};
namespace detail {
namespace tuples {
// Determines if the parameter is null_type
template<typename T> struct is_null_type { enum { RET = 0 }; };
template<> struct is_null_type<null_type> { enum { RET = 1 }; };
/* Build a cons structure from the given Head and Tail. If both are null_type,
return null_type. */
template<typename Head, typename Tail>
struct build_cons
{
private:
enum { tail_is_null_type = is_null_type<Tail>::RET };
public:
typedef cons<Head, Tail> RET;
};
template<>
struct build_cons<null_type, null_type>
{
typedef null_type RET;
};
// Map the N elements of a tuple into a cons list
template<
typename T1,
typename T2 = null_type,
typename T3 = null_type,
typename T4 = null_type,
typename T5 = null_type,
typename T6 = null_type,
typename T7 = null_type,
typename T8 = null_type,
typename T9 = null_type,
typename T10 = null_type
>
struct map_tuple_to_cons
{
typedef typename detail::tuples::build_cons<T10, null_type >::RET cons10;
typedef typename detail::tuples::build_cons<T9, cons10>::RET cons9;
typedef typename detail::tuples::build_cons<T8, cons9>::RET cons8;
typedef typename detail::tuples::build_cons<T7, cons8>::RET cons7;
typedef typename detail::tuples::build_cons<T6, cons7>::RET cons6;
typedef typename detail::tuples::build_cons<T5, cons6>::RET cons5;
typedef typename detail::tuples::build_cons<T4, cons5>::RET cons4;
typedef typename detail::tuples::build_cons<T3, cons4>::RET cons3;
typedef typename detail::tuples::build_cons<T2, cons3>::RET cons2;
typedef typename detail::tuples::build_cons<T1, cons2>::RET cons1;
};
// Workaround the lack of partial specialization in some compilers
template<int N>
struct _element_type
{
template<typename Tuple>
struct inner
{
private:
typedef typename Tuple::tail_type tail_type;
typedef _element_type<N-1> next_elt_type;
public:
typedef typename _element_type<N-1>::template inner<tail_type>::RET RET;
};
};
template<>
struct _element_type<0>
{
template<typename Tuple>
struct inner
{
typedef typename Tuple::head_type RET;
};
};
} // detail
} // tuples
// Return the Nth type of the given Tuple
template<int N, typename Tuple>
struct tuple_element
{
private:
typedef detail::tuples::_element_type<N> nth_type;
public:
typedef typename nth_type::template inner<Tuple>::RET RET;
typedef RET type;
};
namespace detail {
namespace tuples {
// Return a reference to the Nth type of the given Tuple
template<int N, typename Tuple>
struct tuple_element_ref
{
private:
typedef typename tuple_element<N, Tuple>::RET elt_type;
public:
typedef typename add_reference<elt_type>::type RET;
typedef RET type;
};
// Return a const reference to the Nth type of the given Tuple
template<int N, typename Tuple>
struct tuple_element_const_ref
{
private:
typedef typename tuple_element<N, Tuple>::RET elt_type;
public:
typedef typename add_reference<const elt_type>::type RET;
typedef RET type;
};
}
}
// Get length of this tuple
template<typename Tuple>
struct tuple_length
{
enum { value = 1 + tuple_length<typename Tuple::tail_type>::value };
};
template<>
struct tuple_length<null_type>
{
enum { value = 0 };
};
// Reference the Nth element in a tuple and retrieve it with "get"
template<int N>
struct element
{
template<typename Tuple>
static inline
typename detail::tuples::tuple_element_ref<N, Tuple>::RET
get(Tuple& t)
{
return element<N-1>::get(t.tail);
}
template<typename Tuple>
static inline
typename detail::tuples::tuple_element_const_ref<N, Tuple>::RET
get(const Tuple& t)
{
return element<N-1>::get(t.tail);
}
};
template<>
struct element<0>
{
template<typename Tuple>
static inline
typename add_reference<typename Tuple::head_type>::type
get(Tuple& t)
{
return t.head;
}
template<typename Tuple>
static inline
typename add_reference<const typename Tuple::head_type>::type
get(const Tuple& t)
{
return t.head;
}
};
// tuple class
template<
typename T1,
typename T2 = null_type,
typename T3 = null_type,
typename T4 = null_type,
typename T5 = null_type,
typename T6 = null_type,
typename T7 = null_type,
typename T8 = null_type,
typename T9 = null_type,
typename T10 = null_type
>
class tuple :
public detail::tuples::map_tuple_to_cons<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>::cons1
{
private:
typedef detail::tuples::map_tuple_to_cons<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10> mapped_tuple;
typedef typename mapped_tuple::cons10 cons10;
typedef typename mapped_tuple::cons9 cons9;
typedef typename mapped_tuple::cons8 cons8;
typedef typename mapped_tuple::cons7 cons7;
typedef typename mapped_tuple::cons6 cons6;
typedef typename mapped_tuple::cons5 cons5;
typedef typename mapped_tuple::cons4 cons4;
typedef typename mapped_tuple::cons3 cons3;
typedef typename mapped_tuple::cons2 cons2;
typedef typename mapped_tuple::cons1 cons1;
public:
typedef tuple self_type;
explicit tuple(const T1& t1 = T1(),
const T2& t2 = T2(),
const T3& t3 = T3(),
const T4& t4 = T4(),
const T5& t5 = T5(),
const T6& t6 = T6(),
const T7& t7 = T7(),
const T8& t8 = T8(),
const T9& t9 = T9(),
const T10& t10 = T10()) :
cons1(t1, cons2(t2, cons3(t3, cons4(t4, cons5(t5, cons6(t6,cons7(t7,cons8(t8,cons9(t9,cons10(t10))))))))))
{
}
template<typename Other>
explicit tuple(const Other& other) : cons1(other)
{
}
template<typename Other>
self_type& operator=(const Other& other)
{
this->head = other.head;
this->tail = other.tail;
return *this;
}
};
// Retrieve the Nth element in the typle
template<int N, typename Tuple>
typename detail::tuples::tuple_element_ref<N, Tuple>::RET
get(Tuple& t)
{
return element<N>::get(t);
}
// Retrieve the Nth element in the typle
template<int N, typename Tuple>
typename detail::tuples::tuple_element_const_ref<N, Tuple>::RET
get(const Tuple& t)
{
return element<N>::get(t);
}
// Make a tuple
template<typename T1>
inline
tuple<T1>
make_tuple(const T1& t1)
{
return tuple<T1>(t1);
}
// Make a tuple
template<typename T1, typename T2>
inline
tuple<T1, T2>
make_tuple(const T1& t1, const T2& t2)
{
return tuple<T1, T2>(t1, t2);
}
// Make a tuple
template<typename T1, typename T2, typename T3>
inline
tuple<T1, T2, T3>
make_tuple(const T1& t1, const T2& t2, const T3& t3)
{
return tuple<T1, T2, T3>(t1, t2, t3);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4>
inline
tuple<T1, T2, T3, T4>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4)
{
return tuple<T1, T2, T3, T4>(t1, t2, t3, t4);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5>
inline
tuple<T1, T2, T3, T4, T5>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5)
{
return tuple<T1, T2, T3, T4, T5>(t1, t2, t3, t4, t5);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline
tuple<T1, T2, T3, T4, T5, T6>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5, const T6& t6)
{
return tuple<T1, T2, T3, T4, T5, T6>(t1, t2, t3, t4, t5, t6);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline
tuple<T1, T2, T3, T4, T5, T6, T7>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5, const T6& t6, const T7& t7)
{
return tuple<T1, T2, T3, T4, T5, T6, T7>(t1, t2, t3, t4, t5, t6, t7);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline
tuple<T1, T2, T3, T4, T5, T6, T7, T8>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5, const T6& t6, const T7& t7, const T8& t8)
{
return tuple<T1, T2, T3, T4, T5, T6, T7, T8>(t1, t2, t3, t4, t5, t6, t7, t8);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline
tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5, const T6& t6, const T7& t7, const T8& t8, const T9& t9)
{
return tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>(t1, t2, t3, t4, t5, t6, t7, t8, t9);
}
// Make a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9, typename T10>
inline
tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>
make_tuple(const T1& t1, const T2& t2, const T3& t3, const T4& t4, const T5& t5, const T6& t6, const T7& t7, const T8& t8, const T9& t9, const T10& t10)
{
return tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(t1, t2, t3, t4, t5, t6, t7, t8, t9, t10);
}
// Tie variables into a tuple
template<typename T1>
inline
tuple<detail::tuples::assign_to_pointee<T1> >
tie(T1& t1)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1));
}
// Tie variables into a tuple
template<typename T1, typename T2>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2> >
tie(T1& t1, T2& t2)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3> >
tie(T1& t1, T2& t2, T3& t3)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4> >
tie(T1& t1, T2& t2, T3& t3, T4& t4)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T5>(&t5));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5>,
detail::tuples::assign_to_pointee<T6> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5, T6 &t6)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T6>(&t5),
detail::tuples::assign_to_pointee<T5>(&t6));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5>,
detail::tuples::assign_to_pointee<T6>,
detail::tuples::assign_to_pointee<T7> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5, T6 &t6, T7 &t7)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T5>(&t5),
detail::tuples::assign_to_pointee<T6>(&t6),
detail::tuples::assign_to_pointee<T7>(&t7));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5>,
detail::tuples::assign_to_pointee<T6>,
detail::tuples::assign_to_pointee<T7>,
detail::tuples::assign_to_pointee<T8> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5, T6 &t6, T7 &t7, T8 &t8)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T5>(&t5),
detail::tuples::assign_to_pointee<T6>(&t6),
detail::tuples::assign_to_pointee<T7>(&t7),
detail::tuples::assign_to_pointee<T8>(&t8));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5>,
detail::tuples::assign_to_pointee<T6>,
detail::tuples::assign_to_pointee<T7>,
detail::tuples::assign_to_pointee<T8>,
detail::tuples::assign_to_pointee<T9> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5, T6 &t6, T7 &t7, T8 &t8, T9 &t9)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T5>(&t5),
detail::tuples::assign_to_pointee<T6>(&t6),
detail::tuples::assign_to_pointee<T7>(&t7),
detail::tuples::assign_to_pointee<T8>(&t8),
detail::tuples::assign_to_pointee<T9>(&t9));
}
// Tie variables into a tuple
template<typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9, typename T10>
inline
tuple<detail::tuples::assign_to_pointee<T1>,
detail::tuples::assign_to_pointee<T2>,
detail::tuples::assign_to_pointee<T3>,
detail::tuples::assign_to_pointee<T4>,
detail::tuples::assign_to_pointee<T5>,
detail::tuples::assign_to_pointee<T6>,
detail::tuples::assign_to_pointee<T7>,
detail::tuples::assign_to_pointee<T8>,
detail::tuples::assign_to_pointee<T9>,
detail::tuples::assign_to_pointee<T10> >
tie(T1& t1, T2& t2, T3& t3, T4& t4, T5 &t5, T6 &t6, T7 &t7, T8 &t8, T9 &t9, T10 &t10)
{
return make_tuple(detail::tuples::assign_to_pointee<T1>(&t1),
detail::tuples::assign_to_pointee<T2>(&t2),
detail::tuples::assign_to_pointee<T3>(&t3),
detail::tuples::assign_to_pointee<T4>(&t4),
detail::tuples::assign_to_pointee<T5>(&t5),
detail::tuples::assign_to_pointee<T6>(&t6),
detail::tuples::assign_to_pointee<T7>(&t7),
detail::tuples::assign_to_pointee<T8>(&t8),
detail::tuples::assign_to_pointee<T9>(&t9),
detail::tuples::assign_to_pointee<T10>(&t10));
}
// "ignore" allows tuple positions to be ignored when using "tie".
namespace {
detail::tuples::swallow_assign ignore;
}
} // namespace boost
#endif // BOOST_TUPLE_BASIC_NO_PARTIAL_SPEC_HPP