iterator: New.

	* include/experimental/iterator: New. Define ostream_joiner.
	* include/Makefile.am: Add new header.
	* include/Makefile.in: Regenerate.
	* testsuite/experimental/iterator/make_ostream_joiner.cc: New.
	* testsuite/experimental/iterator/ostream_joiner.cc: New.
	* testsuite/experimental/iterator/requirements.cc: New.
	* doc/xml/manual/status_cxx2017.xml: Update status.
	* doc/html/manual/status.html: Regenerate.

From-SVN: r222727

3 files changed, 169 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/experimental/iterator/make_ostream_joiner.cc b/libstdc++-v3/testsuite/experimental/iterator/make_ostream_joiner.cc
new file mode 100644
index 0000000..76d3a97
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/iterator/make_ostream_joiner.cc
@@ -0,0 +1,38 @@
+// Copyright (C) 2015 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++14" }
+
+#include <experimental/iterator>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  std::ostringstream os;
+  auto joiner = std::experimental::make_ostream_joiner(os, "...");
+  for (int i : { 1, 2, 3, 4, 5 })
+    *joiner++ = i;
+  VERIFY( os.str() == "1...2...3...4...5" );
+}
+
+int
+main()
+{
+  test01();
+}
diff --git a/libstdc++-v3/testsuite/experimental/iterator/ostream_joiner.cc b/libstdc++-v3/testsuite/experimental/iterator/ostream_joiner.cc
new file mode 100644
index 0000000..c78dbe6
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/iterator/ostream_joiner.cc
@@ -0,0 +1,73 @@
+// Copyright (C) 2015 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++14" }
+
+#include <experimental/iterator>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+#ifndef __cpp_lib_experimental_ostream_joiner
+# error Feature-test macro is not defined.
+#elif __cpp_lib_experimental_ostream_joiner < 201411
+# error Feature-test macro has bad value.
+#endif
+
+using std::experimental::ostream_joiner;
+
+void
+test01()
+{
+  std::ostringstream os;
+  ostream_joiner<int> joiner{os, 9};
+  for (int i : { 1, 2, 3, 4, 5 })
+    *joiner++ = i;
+  VERIFY( os.str() == "192939495" );
+}
+
+void
+test02()
+{
+  std::ostringstream os;
+  ostream_joiner<char> joiner{os, ','};
+  for (int i : { 1, 2, 3, 4, 5 })
+  {
+    *joiner = i;
+    ++joiner;
+  }
+  VERIFY( os.str() == "1,2,3,4,5" );
+}
+
+void
+test03()
+{
+#if _GLIBCXX_USE_WCHAR_T
+  std::wostringstream os;
+  ostream_joiner<wchar_t, wchar_t> joiner{os, L','};
+  for (int i : { 1, 2, 3, 4, 5 })
+    *joiner++ = i;
+  VERIFY( os.str() == L"1,2,3,4,5" );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}
diff --git a/libstdc++-v3/testsuite/experimental/iterator/requirements.cc b/libstdc++-v3/testsuite/experimental/iterator/requirements.cc
new file mode 100644
index 0000000..54a7f8e
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/iterator/requirements.cc
@@ -0,0 +1,58 @@
+// Copyright (C) 2015 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-options "-std=gnu++14" }
+// { dg-do compile }
+
+// This is a compile-only test with minimal includes
+#include <experimental/iterator>
+#include <iosfwd>
+
+using namespace std::experimental;
+
+template<typename Delim, typename Char>
+struct tester
+{
+  using joiner_type = ostream_joiner<Delim, Char>;
+  using ostream_type = std::basic_ostream<Char>;
+  using test_type = decltype(make_ostream_joiner(std::declval<ostream_type&>(),
+                                                 std::declval<Delim>()));
+
+  static_assert(is_same_v<test_type, joiner_type>, "");
+
+  static_assert(is_same_v<typename test_type::char_type, Char>, "");
+
+  static_assert(is_same_v<typename test_type::traits_type,
+                          std::char_traits<Char>>, "");
+
+  static_assert(is_same_v<typename test_type::ostream_type, ostream_type>, "");
+
+  static_assert(is_same_v<typename test_type::iterator_category,
+                          std::output_iterator_tag>, "");
+
+  static_assert(is_same_v<typename test_type::value_type,        void>, "");
+  static_assert(is_same_v<typename test_type::difference_type,   void>, "");
+  static_assert(is_same_v<typename test_type::pointer,           void>, "");
+  static_assert(is_same_v<typename test_type::reference,         void>, "");
+};
+
+tester<char, char> cc;
+tester<int, char> ic;
+#if _GLIBCXX_USE_WCHAR_T
+tester<wchar_t, wchar_t> ww;
+tester<int, wchar_t> iw;
+#endif