Cleanup _LIBCPP_HAS_NO_<c++11-feature> in the string library.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300633 91177308-0d34-0410-b5e6-96231b3b80d8

include/string

@@ -763,7 +763,7 @@ public:
     basic_string(const basic_string& __str);
     basic_string(const basic_string& __str, const allocator_type& __a);
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string(basic_string&& __str)
 #if _LIBCPP_STD_VER <= 14
@@ -774,7 +774,7 @@ public:
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string(basic_string&& __str, const allocator_type& __a);
-#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#endif  // _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY basic_string(const _CharT* __s);
     _LIBCPP_INLINE_VISIBILITY
     basic_string(const _CharT* __s, const _Allocator& __a);
@@ -806,12 +806,12 @@ public:
     template<class _InputIterator>
         _LIBCPP_INLINE_VISIBILITY
         basic_string(_InputIterator __first, _InputIterator __last, const allocator_type& __a);
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string(initializer_list<_CharT> __il);
     _LIBCPP_INLINE_VISIBILITY
     basic_string(initializer_list<_CharT> __il, const _Allocator& __a);
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     inline ~basic_string();
 
@@ -825,17 +825,15 @@ public:
 #endif
     _LIBCPP_INLINE_VISIBILITY
     basic_string& operator=(__self_view __sv)  {return assign(__sv);}
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& operator=(basic_string&& __str)
         _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value));
+     _LIBCPP_INLINE_VISIBILITY
+    basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
 #endif
     _LIBCPP_INLINE_VISIBILITY basic_string& operator=(const value_type* __s) {return assign(__s);}
     basic_string& operator=(value_type __c);
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
-    _LIBCPP_INLINE_VISIBILITY
-    basic_string& operator=(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
 
 #if _LIBCPP_DEBUG_LEVEL >= 2
     _LIBCPP_INLINE_VISIBILITY
@@ -918,9 +916,9 @@ public:
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(__self_view __sv)          {return append(__sv);}
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(const value_type* __s)     {return append(__s);}
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c)            {push_back(__c); return *this;}
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string& append(const basic_string& __str);
@@ -968,10 +966,10 @@ public:
       return __append_forward_unsafe(__first, __last);
     }
 
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     void push_back(value_type __c);
     _LIBCPP_INLINE_VISIBILITY
@@ -985,7 +983,7 @@ public:
     basic_string& assign(__self_view __sv) { return assign(__sv.data(), __sv.size()); }
     _LIBCPP_INLINE_VISIBILITY
     basic_string& assign(const basic_string& __str) { return *this = __str; }
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& assign(basic_string&& str)
         _NOEXCEPT_((__noexcept_move_assign_container<_Allocator, __alloc_traits>::value))
@@ -1021,10 +1019,10 @@ public:
             basic_string&
         >::type
         assign(_ForwardIterator __first, _ForwardIterator __last);
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string& insert(size_type __pos1, const basic_string& __str);
@@ -1063,11 +1061,11 @@ public:
             iterator
         >::type
         insert(const_iterator __pos, _ForwardIterator __first, _ForwardIterator __last);
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     iterator insert(const_iterator __pos, initializer_list<value_type> __il)
                     {return insert(__pos, __il.begin(), __il.end());}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     basic_string& erase(size_type __pos = 0, size_type __n = npos);
     _LIBCPP_INLINE_VISIBILITY
@@ -1109,11 +1107,11 @@ public:
             basic_string&
         >::type
         replace(const_iterator __i1, const_iterator __i2, _InputIterator __j1, _InputIterator __j2);
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
         {return replace(__i1, __i2, __il.begin(), __il.end());}
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
     size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
     _LIBCPP_INLINE_VISIBILITY
@@ -1408,7 +1406,7 @@ private:
     void __copy_assign_alloc(const basic_string&, false_type) _NOEXCEPT
         {}
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     void __move_assign(basic_string& __str, false_type)
         _NOEXCEPT_(__alloc_traits::is_always_equal::value);
@@ -1641,7 +1639,7 @@ basic_string<_CharT, _Traits, _Allocator>::basic_string(
 #endif
 }
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -1680,7 +1678,7 @@ basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, co
 #endif
 }
 
-#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#endif  // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 void
@@ -1874,7 +1872,7 @@ basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first,
 #endif
 }
 
-#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#ifndef _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -1900,7 +1898,7 @@ basic_string<_CharT, _Traits, _Allocator>::basic_string(
 #endif
 }
 
-#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
+#endif  // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::~basic_string()
@@ -2049,7 +2047,7 @@ basic_string<_CharT, _Traits, _Allocator>::operator=(const basic_string& __str)
     return *this;
 }
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -3790,7 +3788,7 @@ operator+(const basic_string<_CharT, _Traits, _Allocator>& __lhs, _CharT __rhs)
     return __r;
 }
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
 
 template<class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -3850,7 +3848,7 @@ operator+(basic_string<_CharT, _Traits, _Allocator>&& __lhs, _CharT __rhs)
     return _VSTD::move(__lhs);
 }
 
-#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#endif  // _LIBCPP_CXX03_LANG
 
 // swap
 
@@ -3952,7 +3950,7 @@ basic_istream<_CharT, _Traits>&
 getline(basic_istream<_CharT, _Traits>& __is,
         basic_string<_CharT, _Traits, _Allocator>& __str);
 
-#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#ifndef _LIBCPP_CXX03_LANG
 
 template<class _CharT, class _Traits, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
@@ -3966,7 +3964,7 @@ basic_istream<_CharT, _Traits>&
 getline(basic_istream<_CharT, _Traits>&& __is,
         basic_string<_CharT, _Traits, _Allocator>& __str);
 
-#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+#endif  // _LIBCPP_CXX03_LANG
 
 #if _LIBCPP_DEBUG_LEVEL >= 2