add boost on mac

macx64/include/boost/xpressive/detail/utility/traits_utils.hpp

@@ -0,0 +1,145 @@
+///////////////////////////////////////////////////////////////////////////////
+// traits_utils.hpp
+//
+//  Copyright 2008 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_XPRESSIVE_DETAIL_UTILITY_TRAITS_UTILS_HPP_EAN_10_04_2005
+#define BOOST_XPRESSIVE_DETAIL_UTILITY_TRAITS_UTILS_HPP_EAN_10_04_2005
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER)
+# pragma once
+# pragma warning(push)
+# pragma warning(disable : 4100) // unreferenced formal parameter
+#endif
+
+#include <string>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/iterator/transform_iterator.hpp>
+#include <boost/xpressive/detail/utility/algorithm.hpp>
+
+namespace boost { namespace xpressive { namespace detail
+{
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // char_cast
+    //
+    template<typename ToChar, typename FromChar, typename Traits>
+    inline ToChar
+    char_cast(FromChar from, Traits const &, typename enable_if<is_same<ToChar, FromChar> >::type * = 0)
+    {
+        return from;
+    }
+
+    template<typename ToChar, typename FromChar, typename Traits>
+    inline ToChar
+    char_cast(FromChar from, Traits const &tr, typename disable_if<is_same<ToChar, FromChar> >::type * = 0)
+    {
+        BOOST_MPL_ASSERT((is_same<FromChar, char>));
+        return tr.widen(from);
+    }
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // widen_fun
+    //
+    template<typename Traits>
+    struct widen_fun
+    {
+        typedef typename Traits::char_type result_type;
+        explicit widen_fun(Traits const &tr)
+          : traits_(tr)
+        {}
+
+        result_type operator()(char ch) const
+        {
+            return this->traits_.widen(ch);
+        }
+
+        Traits const &traits_;
+    };
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // string_cast_
+    //
+    template<
+        typename To
+      , typename From
+      , typename ToChar = typename detail::range_data<To>::type
+      , typename FromChar = typename detail::range_data<From>::type
+    >
+    struct string_cast_
+    {
+        BOOST_MPL_ASSERT((is_same<FromChar, char>));
+        typedef To const result_type;
+        template<typename Traits>
+        result_type operator()(From const &from, Traits const &tr) const
+        {
+            widen_fun<Traits> widen(tr);
+            To to(
+                boost::make_transform_iterator(detail::data_begin(from), widen)
+              , boost::make_transform_iterator(detail::data_end(from), widen)
+            );
+            return to;
+        }
+    };
+
+    template<typename To, typename From, typename Char>
+    struct string_cast_<To, From, Char, Char>
+    {
+        typedef To const result_type;
+        template<typename Traits>
+        result_type operator()(From const &from, Traits const &) const
+        {
+            To to(detail::data_begin(from), detail::data_end(from));
+            return to;
+        }
+    };
+
+    template<typename From, typename Char>
+    struct string_cast_<From, From, Char, Char>
+    {
+        typedef From const &result_type;
+        template<typename Traits>
+        result_type operator()(From const &from, Traits const &) const
+        {
+            return from;
+        }
+    };
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // string_cast
+    //
+    template<typename To, typename From, typename Traits>
+    typename string_cast_<To, From>::result_type
+    string_cast(From const &from, Traits const &tr)
+    {
+        return string_cast_<To, From>()(from, tr);
+    }
+
+    ///////////////////////////////////////////////////////////////////////////////
+    // translate
+    //
+    template<typename Char, typename Traits>
+    inline Char translate(Char ch, Traits const &tr, mpl::false_) // case-sensitive
+    {
+        return tr.translate(ch);
+    }
+
+    template<typename Char, typename Traits>
+    inline Char translate(Char ch, Traits const &tr, mpl::true_) // case-insensitive
+    {
+        return tr.translate_nocase(ch);
+    }
+
+}}} // namespace boost::xpressive::detail
+
+#if defined(_MSC_VER)
+# pragma warning(pop)
+#endif
+
+#endif