1 files changed, 66 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/directive/seek.hpp b/boost/spirit/home/x3/directive/seek.hpp
new file mode 100644
index 0000000000..e56a37b5c3
--- /dev/null
+++ b/boost/spirit/home/x3/directive/seek.hpp
@@ -0,0 +1,66 @@
+/*=============================================================================
+    Copyright (c) 2011 Jamboree
+    Copyright (c) 2014 Lee Clagett
+
+    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_SEEK_APRIL_13_2014_1920PM)
+#define BOOST_SPIRIT_X3_SEEK_APRIL_13_2014_1920PM
+
+#include <boost/spirit/home/x3/core/parser.hpp>
+
+namespace boost { namespace spirit { namespace x3
+{
+    template<typename Subject>
+    struct seek_directive : unary_parser<Subject, seek_directive<Subject>>
+    {
+        typedef unary_parser<Subject, seek_directive<Subject>> base_type;
+        static bool const is_pass_through_unary = true;
+        static bool const handles_container = Subject::handles_container;
+
+        seek_directive(Subject const& subject) :
+            base_type(subject) {}
+
+        template<typename Iterator, typename Context
+          , typename RContext, typename Attribute>
+        bool parse(
+            Iterator& first, Iterator const& last
+          , Context const& context, RContext& rcontext, Attribute& attr) const
+        {
+            Iterator current(first);
+            for (/**/; current != last; ++current)
+            {
+                if (this->subject.parse(current, last, context, rcontext, attr))
+                {
+                    first = current;
+                    return true;
+                }
+            }
+
+            // Test for when subjects match on input empty. Example:
+            //     comment = "//" >> seek[eol | eoi]
+            if (this->subject.parse(current, last, context, rcontext, attr))
+            {
+                first = current;
+                return true;
+            }
+
+            return false;
+        }
+    };
+
+    struct seek_gen
+    {
+        template<typename Subject>
+        seek_directive<typename extension::as_parser<Subject>::value_type>
+        operator[](Subject const& subject) const
+        {
+            return { as_parser(subject) };
+        }
+    };
+
+    auto const seek = seek_gen{};
+}}}
+
+#endif