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Fixes which make it possible to declare with reference elements

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[SVN r15532]
This commit is contained in:
Dave Abrahams
2002-09-28 07:25:27 +00:00
parent a7c8f8f09b
commit 124d3578a4
1 changed files with 37 additions and 19 deletions
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56
include/boost/tuple/detail/tuple_basic_no_partial_spec.hpp
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@ -98,6 +98,7 @@ namespace tuples {
} }
}; };
template <typename T> struct add_const_reference : add_reference<typename add_const<T>::type> {};
} // end of namespace detail } // end of namespace detail
// cons builds a heterogenous list of types // cons builds a heterogenous list of types
@ -108,36 +109,42 @@ namespace tuples {
typedef Head head_type; typedef Head head_type;
typedef Tail tail_type; typedef Tail tail_type;
private:
typedef typename boost::add_reference<head_type>::type head_ref;
typedef typename boost::add_reference<tail_type>::type tail_ref;
typedef typename detail::add_const_reference<head_type>::type head_cref;
typedef typename detail::add_const_reference<tail_type>::type tail_cref;
public:
head_type head; head_type head;
tail_type tail; tail_type tail;
typename boost::add_reference<head_type>::type get_head() { return head; } head_ref get_head() { return head; }
typename boost::add_reference<tail_type>::type get_tail() { return tail; } tail_ref get_tail() { return tail; }
typename boost::add_reference<const head_type>::type get_head() const { return head; } head_cref get_head() const { return head; }
typename boost::add_reference<const tail_type>::type get_tail() const { return tail; } tail_cref get_tail() const { return tail; }
#if defined BOOST_MSVC #if defined BOOST_MSVC
template<typename Tail> template<typename Tail>
explicit cons(const head_type& h /* = head_type() */, // causes MSVC 6.5 to barf. explicit cons(head_cref h /* = head_type() */, // causes MSVC 6.5 to barf.
const Tail& t) : head(h), tail(t.head, t.tail) const Tail& t) : head(h), tail(t.head, t.tail)
{ {
} }
explicit cons(const head_type& h /* = head_type() */, // causes MSVC 6.5 to barf. explicit cons(head_cref h /* = head_type() */, // causes MSVC 6.5 to barf.
const null_type& t) : head(h), tail(t) const null_type& t) : head(h), tail(t)
{ {
} }
#else #else
template<typename T> template<typename T>
explicit cons(const head_type& h, const T& t) : explicit cons(head_cref h, const T& t) :
head(h), tail(t.head, t.tail) head(h), tail(t.head, t.tail)
{ {
} }
explicit cons(const head_type& h = head_type(), explicit cons(head_cref h = head_type(),
const tail_type& t = tail_type()) : tail_cref t = tail_type()) :
head(h), tail(t) head(h), tail(t)
{ {
} }
@ -416,20 +423,31 @@ namespace tuples {
typedef typename mapped_tuple::cons2 cons2; typedef typename mapped_tuple::cons2 cons2;
typedef typename mapped_tuple::cons1 cons1; typedef typename mapped_tuple::cons1 cons1;
typedef typename detail::add_const_reference<T1>::type t1_cref;
typedef typename detail::add_const_reference<T2>::type t2_cref;
typedef typename detail::add_const_reference<T3>::type t3_cref;
typedef typename detail::add_const_reference<T4>::type t4_cref;
typedef typename detail::add_const_reference<T5>::type t5_cref;
typedef typename detail::add_const_reference<T6>::type t6_cref;
typedef typename detail::add_const_reference<T7>::type t7_cref;
typedef typename detail::add_const_reference<T8>::type t8_cref;
typedef typename detail::add_const_reference<T9>::type t9_cref;
typedef typename detail::add_const_reference<T10>::type t10_cref;
public: public:
typedef cons1 inherited; typedef cons1 inherited;
typedef tuple self_type; typedef tuple self_type;
explicit tuple(const T1& t1 = T1(), explicit tuple(t1_cref t1 = T1(),
const T2& t2 = T2(), t2_cref t2 = T2(),
const T3& t3 = T3(), t3_cref t3 = T3(),
const T4& t4 = T4(), t4_cref t4 = T4(),
const T5& t5 = T5(), t5_cref t5 = T5(),
const T6& t6 = T6(), t6_cref t6 = T6(),
const T7& t7 = T7(), t7_cref t7 = T7(),
const T8& t8 = T8(), t8_cref t8 = T8(),
const T9& t9 = T9(), t9_cref t9 = T9(),
const T10& t10 = T10()) : t10_cref t10 = T10()
) :
cons1(t1, cons2(t2, cons3(t3, cons4(t4, cons5(t5, cons6(t6,cons7(t7,cons8(t8,cons9(t9,cons10(t10)))))))))) cons1(t1, cons2(t2, cons3(t3, cons4(t4, cons5(t5, cons6(t6,cons7(t7,cons8(t8,cons9(t9,cons10(t10))))))))))
{ {
} }