1 files changed, 102 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/support/no_case.hpp b/boost/spirit/home/x3/support/no_case.hpp
new file mode 100644
index 0000000000..2ad3f709c6
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+++ b/boost/spirit/home/x3/support/no_case.hpp
@@ -0,0 +1,102 @@
+/*=============================================================================
+    Copyright (c) 2001-2014 Joel de Guzman
+
+    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)
+==============================================================================*/
+#if !defined(BOOST_SPIRIT_X3_SUPPORT_NO_CASE_SEPT_24_2014_1125PM)
+#define BOOST_SPIRIT_X3_SUPPORT_NO_CASE_SEPT_24_2014_1125PM
+
+#include <boost/spirit/home/x3/support/unused.hpp>
+#include <boost/spirit/home/x3/support/context.hpp>
+#include <boost/spirit/home/x3/char/char_class_tags.hpp>
+
+namespace boost { namespace spirit { namespace x3
+{
+    struct no_case_tag {};
+
+    template <typename Encoding>
+    struct case_compare
+    {
+        template < template <typename> class basic_charset>
+        typename Encoding::char_type
+        in_set( typename Encoding::char_type const ch
+              , basic_charset<typename Encoding::char_type> const &set)
+        {
+            return set.test(ch);
+        }
+
+        int32_t operator()(
+              typename Encoding::char_type const lc
+            , typename Encoding::char_type const rc) const
+        {
+            return lc - rc;
+        }
+
+
+        template <typename CharClassTag>
+        CharClassTag get_char_class_tag(CharClassTag tag) const
+        {
+            return tag;
+        }
+    };
+
+    template <typename Encoding>
+    struct no_case_compare
+    {
+        template < template <typename> class basic_charset>
+        typename Encoding::char_type
+        in_set( typename Encoding::char_type const ch
+              , basic_charset<typename Encoding::char_type> const &set)
+        {
+            return set.test(ch)
+                || set.test(Encoding::islower(ch) ? Encoding::toupper(ch) : Encoding::tolower(ch));
+        }
+
+        int32_t operator()(
+              typename Encoding::char_type const lc
+            , typename Encoding::char_type const rc) const
+        {
+            return Encoding::islower(rc) ? Encoding::tolower(lc) - rc : Encoding::toupper(lc) - rc;
+        }
+
+        template <typename CharClassTag>
+        CharClassTag get_char_class_tag(CharClassTag tag) const
+        {
+            return tag;
+        }
+
+        alpha_tag get_char_class_tag(lower_tag ) const
+        {
+            return {};
+        }
+
+        alpha_tag get_char_class_tag(upper_tag ) const
+        {
+            return {};
+        }
+
+    };
+
+    template <typename Encoding>
+    case_compare<Encoding> get_case_compare_impl(unused_type const&)
+    {
+        return {};
+    }
+
+    template <typename Encoding>
+    no_case_compare<Encoding> get_case_compare_impl(no_case_tag const&)
+    {
+        return {};
+    }
+
+    template <typename Encoding, typename Context>
+    inline decltype(auto) get_case_compare(Context const& context)
+    {
+        return get_case_compare_impl<Encoding>(x3::get<no_case_tag>(context));
+    }
+    auto const no_case_compare_ = no_case_tag{};
+
+}}}
+
+#endif