Added thirdparty: boost library

thirdparty/include/boost/spirit/home/classic/dynamic/lazy.hpp

@@ -0,0 +1,66 @@
+/*=============================================================================
+    Copyright (c) 2003 Joel de Guzman
+    Copyright (c) 2003 Vaclav Vesely
+    http://spirit.sourceforge.net/
+
+  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_SPIRIT_LAZY_HPP
+#define BOOST_SPIRIT_LAZY_HPP
+
+////////////////////////////////////////////////////////////////////////////////
+#include <boost/spirit/home/classic/namespace.hpp>
+#include <boost/spirit/home/classic/core/parser.hpp>
+#include <boost/spirit/home/classic/phoenix/actor.hpp>
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace boost { namespace spirit {
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
+
+    ////////////////////////////////////////////////////////////////////////////
+    //
+    // lazy_parser, holds phoenix actor which returns a spirit parser.
+    //
+    ////////////////////////////////////////////////////////////////////////////
+
+    template<class ActorT>
+    struct lazy_parser : parser<lazy_parser<ActorT> >
+    {
+        typedef lazy_parser<ActorT> self_t;
+        typedef typename ::phoenix::actor_result<
+            ActorT, ::phoenix::tuple<> >::plain_type actor_result_t;
+
+        template<typename ScannerT>
+        struct result
+        {
+            typedef typename
+                parser_result<actor_result_t, ScannerT>::type
+            type;
+        };
+
+        lazy_parser(ActorT const& actor_)
+        : actor(actor_) {}
+
+        template<typename ScannerT>
+        typename parser_result<self_t, ScannerT>::type
+        parse(ScannerT const& scan) const
+        { return actor().parse(scan); }
+
+        ActorT actor;
+    };
+
+    //////////////////////////////
+    // lazy_p, returns lazy_parser
+    // Usage: lazy_p(actor)
+    template<class ActorT>
+    lazy_parser<ActorT> lazy_p(ActorT const& actor)
+    { return lazy_parser<ActorT>(actor); }
+
+BOOST_SPIRIT_CLASSIC_NAMESPACE_END
+
+}} // namespace BOOST_SPIRIT_CLASSIC_NS
+
+#endif // BOOST_SPIRIT_LAZY_HPP