1 files changed, 48 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/test/x3/utils.hpp b/src/boost/libs/spirit/test/x3/utils.hpp
new file mode 100644
index 00000000..588f60de
--- /dev/null
+++ b/src/boost/libs/spirit/test/x3/utils.hpp
@@ -0,0 +1,48 @@
+/*=============================================================================
+    Copyright (c) 2019 Nikita Kniazev
+
+    Use, modification and distribution is subject to 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_TEST_X3_UTILS_HPP)
+#define BOOST_SPIRIT_TEST_X3_UTILS_HPP
+
+#include <boost/spirit/home/x3/core/parser.hpp>
+
+struct move_only
+{
+    move_only() = default;
+    move_only(move_only&&) = default;
+    move_only& operator=(move_only&&) = default;
+};
+
+
+template <typename T>
+struct synth_parser : boost::spirit::x3::parser<synth_parser<T>>
+{
+    typedef T attribute_type;
+
+    static bool const has_attribute = true;
+    static bool const handles_container = false;
+
+    template <typename Iterator, typename Context,
+        typename RuleContext, typename Attribute>
+    bool parse(Iterator& iter, Iterator const& last, Context const&,
+        RuleContext&, Attribute& attr) const
+    {
+        if (iter != last && *iter == 's') {
+            ++iter;
+            boost::spirit::x3::traits::move_to(attribute_type{}, attr);
+            return true;
+        }
+        return false;
+    }
+};
+
+template <typename T>
+synth_parser<T> synth{};
+
+synth_parser<move_only> const synth_move_only{};
+
+#endif