1 files changed, 55 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/directive/omit.hpp b/boost/spirit/home/x3/directive/omit.hpp
new file mode 100644
index 0000000000..43ebd49aaf
--- /dev/null
+++ b/boost/spirit/home/x3/directive/omit.hpp
@@ -0,0 +1,55 @@
+/*=============================================================================
+    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(SPIRIT_OMIT_MARCH_24_2007_0802AM)
+#define SPIRIT_OMIT_MARCH_24_2007_0802AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/x3/support/unused.hpp>
+#include <boost/spirit/home/x3/core/parser.hpp>
+
+namespace boost { namespace spirit { namespace x3
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // omit_directive forces the attribute of subject parser
+    // to be unused_type
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Subject>
+    struct omit_directive : unary_parser<Subject, omit_directive<Subject>>
+    {
+        typedef unary_parser<Subject, omit_directive<Subject> > base_type;
+        typedef unused_type attribute_type;
+        static bool const has_attribute = false;
+
+        typedef Subject subject_type;
+        omit_directive(Subject const& subject)
+          : base_type(subject) {}
+
+        template <typename Iterator, typename Context, typename RContext>
+        bool parse(Iterator& first, Iterator const& last
+          , Context const& context, RContext& rcontext, unused_type) const
+        {
+            return this->subject.parse(first, last, context, rcontext, unused);
+        }
+    };
+
+    struct omit_gen
+    {
+        template <typename Subject>
+        omit_directive<typename extension::as_parser<Subject>::value_type>
+        operator[](Subject const& subject) const
+        {
+            return {as_parser(subject)};
+        }
+    };
+
+    omit_gen const omit = omit_gen();
+}}}
+
+#endif