libstdc++: Whitespace changes in <tuple>

libstdc++-v3/ChangeLog:

	* include/std/tuple (_Tuple_impl): Whitespaces changes for
	consistent indentation. Also use __enable_if_t alias template.

1 files changed, 94 insertions, 68 deletions

diff --git a/libstdc++-v3/include/std/tuple b/libstdc++-v3/include/std/tuple
index 7be9943e34a..1c22d4db788 100644
--- a/libstdc++-v3/include/std/tuple
+++ b/libstdc++-v3/include/std/tuple
@@ -265,16 +265,18 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       constexpr _Tuple_impl()
       : _Inherited(), _Base() { }
 
-      explicit
-      constexpr _Tuple_impl(const _Head& __head, const _Tail&... __tail)
-      : _Inherited(__tail...), _Base(__head) { }
-
-      template<typename _UHead, typename... _UTail, typename = typename
-               enable_if<sizeof...(_Tail) == sizeof...(_UTail)>::type>
-        explicit
-        constexpr _Tuple_impl(_UHead&& __head, _UTail&&... __tail)
+      explicit constexpr
+      _Tuple_impl(const _Head& __head, const _Tail&... __tail)
+      : _Inherited(__tail...), _Base(__head)
+      { }
+
+      template<typename _UHead, typename... _UTail,
+	       typename = __enable_if_t<sizeof...(_Tail) == sizeof...(_UTail)>>
+	explicit constexpr
+	_Tuple_impl(_UHead&& __head, _UTail&&... __tail)
 	: _Inherited(std::forward<_UTail>(__tail)...),
-	  _Base(std::forward<_UHead>(__head)) { }
+	  _Base(std::forward<_UHead>(__head))
+	{ }
 
       constexpr _Tuple_impl(const _Tuple_impl&) = default;
 
@@ -285,58 +287,67 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       constexpr
       _Tuple_impl(_Tuple_impl&& __in)
       noexcept(__and_<is_nothrow_move_constructible<_Head>,
-	              is_nothrow_move_constructible<_Inherited>>::value)
+		      is_nothrow_move_constructible<_Inherited>>::value)
       : _Inherited(std::move(_M_tail(__in))),
-	_Base(std::forward<_Head>(_M_head(__in))) { }
+	_Base(std::forward<_Head>(_M_head(__in)))
+      { }
 
       template<typename... _UElements>
-        constexpr _Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
+	constexpr
+	_Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
 	: _Inherited(_Tuple_impl<_Idx, _UElements...>::_M_tail(__in)),
-	  _Base(_Tuple_impl<_Idx, _UElements...>::_M_head(__in)) { }
+	  _Base(_Tuple_impl<_Idx, _UElements...>::_M_head(__in))
+	{ }
 
       template<typename _UHead, typename... _UTails>
-        constexpr _Tuple_impl(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+	constexpr
+	_Tuple_impl(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
 	: _Inherited(std::move
 		     (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in))),
 	  _Base(std::forward<_UHead>
-		(_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in))) { }
+		(_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in)))
+	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a)
 	: _Inherited(__tag, __a),
-          _Base(__tag, __use_alloc<_Head>(__a)) { }
+	  _Base(__tag, __use_alloc<_Head>(__a))
+	{ }
 
       template<typename _Alloc>
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
 		    const _Head& __head, const _Tail&... __tail)
 	: _Inherited(__tag, __a, __tail...),
-          _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head) { }
+	  _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head)
+	{ }
 
       template<typename _Alloc, typename _UHead, typename... _UTail,
-               typename = typename enable_if<sizeof...(_Tail)
-					     == sizeof...(_UTail)>::type>
+	       typename = __enable_if_t<sizeof...(_Tail) == sizeof...(_UTail)>>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _UHead&& __head, _UTail&&... __tail)
+		    _UHead&& __head, _UTail&&... __tail)
 	: _Inherited(__tag, __a, std::forward<_UTail>(__tail)...),
-          _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
-	        std::forward<_UHead>(__head)) { }
+	  _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
+		std::forward<_UHead>(__head))
+	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
-        _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            const _Tuple_impl& __in)
+	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+		    const _Tuple_impl& __in)
 	: _Inherited(__tag, __a, _M_tail(__in)),
-          _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in)) { }
+	  _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in))
+	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _Tuple_impl&& __in)
+		    _Tuple_impl&& __in)
 	: _Inherited(__tag, __a, std::move(_M_tail(__in))),
 	  _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
-	        std::forward<_Head>(_M_head(__in))) { }
+		std::forward<_Head>(_M_head(__in)))
+	{ }
 
       template<typename _Alloc, typename _UHead, typename... _UTails>
 	_GLIBCXX20_CONSTEXPR
@@ -345,23 +356,25 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	: _Inherited(__tag, __a,
 		     _Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in)),
 	  _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
-		_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in)) { }
+		_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in))
+	{ }
 
       template<typename _Alloc, typename _UHead, typename... _UTails>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+		    _Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
 	: _Inherited(__tag, __a, std::move
 		     (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_tail(__in))),
 	  _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
-                std::forward<_UHead>
-		(_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in))) { }
+		std::forward<_UHead>
+		(_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in)))
+	{ }
 
       template<typename... _UElements>
 	_GLIBCXX20_CONSTEXPR
-        void
-        _M_assign(const _Tuple_impl<_Idx, _UElements...>& __in)
-        {
+	void
+	_M_assign(const _Tuple_impl<_Idx, _UElements...>& __in)
+	{
 	  _M_head(*this) = _Tuple_impl<_Idx, _UElements...>::_M_head(__in);
 	  _M_tail(*this)._M_assign(
 	      _Tuple_impl<_Idx, _UElements...>::_M_tail(__in));
@@ -369,9 +382,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
       template<typename _UHead, typename... _UTails>
 	_GLIBCXX20_CONSTEXPR
-        void
-        _M_assign(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
-        {
+	void
+	_M_assign(_Tuple_impl<_Idx, _UHead, _UTails...>&& __in)
+	{
 	  _M_head(*this) = std::forward<_UHead>
 	    (_Tuple_impl<_Idx, _UHead, _UTails...>::_M_head(__in));
 	  _M_tail(*this)._M_assign(
@@ -404,17 +417,20 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       static constexpr const _Head&
       _M_head(const _Tuple_impl& __t) noexcept { return _Base::_M_head(__t); }
 
-      constexpr _Tuple_impl()
+      constexpr
+      _Tuple_impl()
       : _Base() { }
 
-      explicit
-      constexpr _Tuple_impl(const _Head& __head)
-      : _Base(__head) { }
+      explicit constexpr
+      _Tuple_impl(const _Head& __head)
+      : _Base(__head)
+      { }
 
       template<typename _UHead>
-        explicit
-        constexpr _Tuple_impl(_UHead&& __head)
-	: _Base(std::forward<_UHead>(__head)) { }
+	explicit constexpr
+	_Tuple_impl(_UHead&& __head)
+	: _Base(std::forward<_UHead>(__head))
+	{ }
 
       constexpr _Tuple_impl(const _Tuple_impl&) = default;
 
@@ -425,75 +441,85 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       constexpr
       _Tuple_impl(_Tuple_impl&& __in)
       noexcept(is_nothrow_move_constructible<_Head>::value)
-      : _Base(std::forward<_Head>(_M_head(__in))) { }
+      : _Base(std::forward<_Head>(_M_head(__in)))
+      { }
 
       template<typename _UHead>
-        constexpr _Tuple_impl(const _Tuple_impl<_Idx, _UHead>& __in)
-	: _Base(_Tuple_impl<_Idx, _UHead>::_M_head(__in)) { }
+	constexpr
+	_Tuple_impl(const _Tuple_impl<_Idx, _UHead>& __in)
+	: _Base(_Tuple_impl<_Idx, _UHead>::_M_head(__in))
+	{ }
 
       template<typename _UHead>
-        constexpr _Tuple_impl(_Tuple_impl<_Idx, _UHead>&& __in)
+	constexpr
+	_Tuple_impl(_Tuple_impl<_Idx, _UHead>&& __in)
 	: _Base(std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in)))
 	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a)
-	: _Base(__tag, __use_alloc<_Head>(__a)) { }
+	: _Base(__tag, __use_alloc<_Head>(__a))
+	{ }
 
       template<typename _Alloc>
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
 		    const _Head& __head)
-	: _Base(__use_alloc<_Head, _Alloc, _Head>(__a), __head) { }
+	: _Base(__use_alloc<_Head, _Alloc, const _Head&>(__a), __head)
+	{ }
 
       template<typename _Alloc, typename _UHead>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _UHead&& __head)
+		    _UHead&& __head)
 	: _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
-	        std::forward<_UHead>(__head)) { }
+		std::forward<_UHead>(__head))
+	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
-        _Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            const _Tuple_impl& __in)
-	: _Base(__use_alloc<_Head, _Alloc, _Head>(__a), _M_head(__in)) { }
+	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
+		    const _Tuple_impl& __in)
+	: _Base(__use_alloc<_Head, _Alloc, const _Head&>(__a), _M_head(__in))
+	{ }
 
       template<typename _Alloc>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _Tuple_impl&& __in)
+		    _Tuple_impl&& __in)
 	: _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
-	        std::forward<_Head>(_M_head(__in))) { }
+		std::forward<_Head>(_M_head(__in)))
+	{ }
 
       template<typename _Alloc, typename _UHead>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            const _Tuple_impl<_Idx, _UHead>& __in)
-	: _Base(__use_alloc<_Head, _Alloc, _Head>(__a),
-		_Tuple_impl<_Idx, _UHead>::_M_head(__in)) { }
+		    const _Tuple_impl<_Idx, _UHead>& __in)
+	: _Base(__use_alloc<_Head, _Alloc, const _UHead&>(__a),
+		_Tuple_impl<_Idx, _UHead>::_M_head(__in))
+	{ }
 
       template<typename _Alloc, typename _UHead>
 	_GLIBCXX20_CONSTEXPR
 	_Tuple_impl(allocator_arg_t __tag, const _Alloc& __a,
-	            _Tuple_impl<_Idx, _UHead>&& __in)
+		    _Tuple_impl<_Idx, _UHead>&& __in)
 	: _Base(__use_alloc<_Head, _Alloc, _UHead>(__a),
-                std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in)))
+		std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in)))
 	{ }
 
       template<typename _UHead>
 	_GLIBCXX20_CONSTEXPR
-        void
-        _M_assign(const _Tuple_impl<_Idx, _UHead>& __in)
-        {
+	void
+	_M_assign(const _Tuple_impl<_Idx, _UHead>& __in)
+	{
 	  _M_head(*this) = _Tuple_impl<_Idx, _UHead>::_M_head(__in);
 	}
 
       template<typename _UHead>
 	_GLIBCXX20_CONSTEXPR
-        void
-        _M_assign(_Tuple_impl<_Idx, _UHead>&& __in)
-        {
+	void
+	_M_assign(_Tuple_impl<_Idx, _UHead>&& __in)
+	{
 	  _M_head(*this)
 	    = std::forward<_UHead>(_Tuple_impl<_Idx, _UHead>::_M_head(__in));
 	}