feedc0de/boost_variant2
1
0
Fork 0
forked from boostorg/variant2
Code Pull Requests Activity

Add initializer list support

Browse Source
This commit is contained in:
Peter Dimov
2017-05-31 04:19:40 +03:00
parent 8301228e22
commit 755bc60c2b
5 changed files with 67 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/boost/variant2/variant.hpp
+17 -5
View File
@@ -749,8 +749,10 @@ public:
{
}
template<class U, class V, class... A>
constexpr explicit variant( in_place_type_t<U>, std::initializer_list<V>, A&&... a );
template<class U, class V, class... A, class I = mp_find<variant<T...>, U>>
constexpr explicit variant( in_place_type_t<U>, std::initializer_list<V> il, A&&... a ): variant_base( I(), il, std::forward<A>(a)... )
{
}
template<std::size_t I, class... A>
constexpr explicit variant( in_place_index_t<I>, A&&... a ): variant_base( mp_size_t<I>(), std::forward<A>(a)... )
@@ -758,7 +760,9 @@ public:
}
template<std::size_t I, class V, class... A>
constexpr explicit variant( in_place_index_t<I>, std::initializer_list<V>, A&&... );
constexpr explicit variant( in_place_index_t<I>, std::initializer_list<V> il, A&&... a ): variant_base( mp_size_t<I>(), il, std::forward<A>(a)... )
{
}
// assignment
variant& operator=( variant const & r )
@@ -836,7 +840,11 @@ public:
return _get_impl( I() );
}
template<class U, class V, class... A> U& emplace( std::initializer_list<V> il, A&&... a );
template<class U, class V, class... A, class I = mp_find<variant<T...>, U>> U& emplace( std::initializer_list<V> il, A&&... a )
{
variant_base::template emplace<I::value>( il, std::forward<A>(a)... );
return _get_impl( I() );
}
template<std::size_t I, class... A> variant_alternative_t<I, variant<T...>>& emplace( A&&... a )
{
@@ -844,7 +852,11 @@ public:
return _get_impl( mp_size_t<I>() );
}
template<std::size_t I, class V, class... A> variant_alternative_t<I, variant<T...>>& emplace( std::initializer_list<V> il, A&&... a );
template<std::size_t I, class V, class... A> variant_alternative_t<I, variant<T...>>& emplace( std::initializer_list<V> il, A&&... a )
{
variant_base::template emplace<I>( il, std::forward<A>(a)... );
return _get_impl( mp_size_t<I>() );
}
// value status