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Subject: RE: svn commit: r670099 - in /stdcxx/branches/4.3.x/include:
 rw/_ref_wrap.h tuple
Date: Sat, 21 Jun 2008 12:29:44 -0600
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Thread-Topic: svn commit: r670099 - in /stdcxx/branches/4.3.x/include:
 rw/_ref_wrap.h tuple
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References: <20080621002540.1121523889F7@eris.apache.org>
From: "Travis Vitek" <Travis.Vitek@roguewave.com>
To: <dev@stdcxx.apache.org>
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Brad,

I just noticed that you aren't applying SVN properties to all of the =
files that you are adding. New headers and source should get the =
svn:eol-style and svn:keywords properties set. Ideally this would be =
done before you submit the file for the first time, but you can add the =
properties later.

I believe that the command sequence on non-windows systems is

  $ svn propset svn:eol-style native <file>
  $ svn propset svn:keywords Id <file>=20

Travis

-----Original Message-----
From: elemings@apache.org [mailto:elemings@apache.org]
Sent: Fri 6/20/2008 5:25 PM
To: commits@stdcxx.apache.org
Subject: svn commit: r670099 - in /stdcxx/branches/4.3.x/include: =
rw/_ref_wrap.h tuple
=20
Author: elemings
Date: Fri Jun 20 17:25:39 2008
New Revision: 670099

URL: http://svn.apache.org/viewvc?rev=3D670099&view=3Drev
Log:
2008-06-21  Eric Lemings <eric.lemings@roguewave.com>

	STDCXX-958
	* include/rw/_ref_wrap.h: Add internal header for reference
	wrappers.  (Currently just an empty class template.)
	* include/tuple: Add helpers for deducing return type of
	make_tuple() function.
	(make_tuple): Implemented and documented.


Added:
    stdcxx/branches/4.3.x/include/rw/_ref_wrap.h
Modified:
    stdcxx/branches/4.3.x/include/tuple

Added: stdcxx/branches/4.3.x/include/rw/_ref_wrap.h
URL: =
http://svn.apache.org/viewvc/stdcxx/branches/4.3.x/include/rw/_ref_wrap.h=
?rev=3D670099&view=3Dauto
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- stdcxx/branches/4.3.x/include/rw/_ref_wrap.h (added)
+++ stdcxx/branches/4.3.x/include/rw/_ref_wrap.h Fri Jun 20 17:25:39 =
2008
@@ -0,0 +1,63 @@
+// -*- C++ -*-
+/***********************************************************************=
****
+ *
+ * This is an internal header file used to implement the C++ Standard
+ * Library. It should never be #included directly by a program.
+ *
+ * $Id$
+ *
+ =
*************************************************************************=
**
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 2008 Rogue Wave Software.
+ *=20
+ =
*************************************************************************=
*/
+
+#ifndef _RWSTD_RW_REF_WRAP_INCLUDED
+#  define _RWSTD_RW_REF_WRAP_INCLUDED
+
+#  include <rw/_defs.h>
+
+#  if !defined _RWSTD_NO_EXT_CXX_0X
+
+
+_RWSTD_NAMESPACE (__rw) {
+
+
+/**
+ * @class std::reference_wrapper
+ *
+ * Encapsulates a reference as an object.  This class template allows
+ * references to be manipulated and behave as an ordinary object.
+ *
+ * @tparam Type A non-reference type.
+ */
+
+template <class _Type>
+class __rw_ref_wrap
+{
+
+};
+
+
+}   // namespace __rw
+
+
+#  endif   // !defined _RWSTD_NO_EXT_CXX_0X
+
+#endif   // _RWSTD_RW_REF_WRAP_INCLUDED

Modified: stdcxx/branches/4.3.x/include/tuple
URL: =
http://svn.apache.org/viewvc/stdcxx/branches/4.3.x/include/tuple?rev=3D67=
0099&r1=3D670098&r2=3D670099&view=3Ddiff
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
--- stdcxx/branches/4.3.x/include/tuple (original)
+++ stdcxx/branches/4.3.x/include/tuple Fri Jun 20 17:25:39 2008
@@ -36,9 +36,9 @@
 #    error _RWSTD_NO_EXT_CXX_0X defined and C++0x header included
 #  endif   // defined _RWSTD_NO_EXT_CXX_0X
=20
-#  include <rw/_meta_cv.h>          // for __rw_add_const
-#  include <rw/_meta_help.h>        // for __rw_integral_constant
-#  include <rw/_meta_ref.h>         // for __rw_add_lvalue_reference
+#  include <type_traits>
+
+#  include <rw/_ref_wrap.h>
=20
 #  include <rw/_tuple.h>
 #  include <rw/_tuple_traits.h>
@@ -48,13 +48,37 @@
=20
 struct __rw_ignore { /* empty */ };
=20
-/// Transforms _Type into a suitable make_tuple() return type.
 template <class _Type>
-struct __rw_make_tuple {
-    /// @todo Deduce correct return type.
+struct __rw_deduce_reference
+{
     typedef _Type type;
 };
=20
+template <class _Type>
+struct __rw_deduce_reference< __rw_ref_wrap<_Type> >
+{
+    typedef _Type& type;
+};
+
+template <class _Type>
+struct __rw_deduce_reference< const __rw_ref_wrap<_Type> >
+{
+    typedef _Type& type;
+};
+
+/**
+ * @internal
+ * Transform a tuple element type into a suitable make_tuple() return
+ * type.
+ * @tparam _Type A tuple element type.
+ */
+template <class _Type>
+class __rw_make_tuple
+{
+    typedef _TYPENAME _RWSTD_DECAY(_Type) _Decay;
+    typedef _TYPENAME __rw_deduce_reference<_Decay>::type type;
+};
+
 }   // namespace __rw
=20
=20
@@ -69,9 +93,24 @@
=20
 #    if !defined _RWSTD_NO_RVALUE_REFERENCES
=20
+/**
+ * @function make_tuple
+ *
+ * Create a new tuple from a list of element values.  This function
+ * constructs a new tuple from the corresponding element values by
+ * utilizing move semantics.
+ *
+ * @tparam _Types The list of elements types in the tuple.
+ * @param __values A corresponding list of element values.
+ * @return A tuple object containing the given element values.
+ */
 template <class... _Types>
 tuple<_TYPENAME _RW::__rw_make_tuple<_Types>::type...>
-make_tuple (_Types&&... __values);
+make_tuple (_Types&&... __values)
+{
+    typedef tuple<_TYPENAME _RW::__rw_make_tuple<_Types>::type...> =
_Tuple;
+    return _Tuple (std::forward<_Types> (__values)...);
+}
=20
 template <class... _TypesT, class... _TypesU>
 tuple<_TypesT..., _TypesU...>




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