o3tl: rename compat_functional header

After the cleanup, the stuff there really stands on its own (and the
remaining usage of select1st/2nd is more descriptive than lambdas).

Change-Id: I0aba131d5dc550189f8130d167dc94167e404540
Reviewed-on: https://gerrit.libreoffice.org/17806
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

1 files changed, 65 insertions, 0 deletions

diff --git a/include/o3tl/functional.hxx b/include/o3tl/functional.hxx
new file mode 100644
index 000000000000..b1341e2112b7
--- /dev/null
+++ b/include/o3tl/functional.hxx
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Copyright (c) 1996-1998
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Copyright (c) 1997
+ * Moscow Center for SPARC Technology
+ *
+ * Copyright (c) 1999
+ * Boris Fomitchev
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+
+/*
+ * Lifted and paraphrased from STLport - with additions from Fridrich
+ * Strba and Thorsten Behrens
+ */
+
+#ifndef INCLUDED_O3TL_COMPAT_FUNCTIONAL_HXX
+#define INCLUDED_O3TL_COMPAT_FUNCTIONAL_HXX
+
+#include <sal/config.h>
+
+namespace o3tl
+{
+/// Select first value of a pair
+template<typename P>
+struct select1st
+{
+    typedef P argument_type;
+    typedef typename P::first_type result_type;
+    const result_type& operator()( const argument_type& cp ) const {
+        return cp.first;
+    }
+};
+
+/// Select second value of a pair
+template<typename P>
+struct select2nd
+{
+    typedef P argument_type;
+    typedef typename P::second_type result_type;
+    const result_type& operator()( const argument_type& cp ) const {
+        return cp.second;
+    }
+};
+
+}   // namespace o3tl
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */