Added thirdparty: boost library

thirdparty/include/boost/spirit/home/support/lazy.hpp

@@ -0,0 +1,46 @@
+/*=============================================================================
+    Copyright (c) 2001-2011 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_LAZY_NOVEMBER_04_2008_1157AM)
+#define BOOST_SPIRIT_LAZY_NOVEMBER_04_2008_1157AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/support/modify.hpp>
+#include <boost/spirit/home/support/detail/is_spirit_tag.hpp>
+#include <boost/proto/traits.hpp>
+
+namespace boost { namespace phoenix
+{
+    template <typename Expr>
+    struct actor;
+}}
+
+namespace boost { namespace spirit
+{
+    template <typename Eval>
+    typename proto::terminal<phoenix::actor<Eval> >::type
+    lazy(phoenix::actor<Eval> const& f)
+    {
+        return proto::terminal<phoenix::actor<Eval> >::type::make(f);
+    }
+
+    namespace tag
+    {
+        struct lazy_eval 
+        {
+            BOOST_SPIRIT_IS_TAG()
+        };
+    }
+
+    template <typename Domain>
+    struct is_modifier_directive<Domain, tag::lazy_eval>
+      : mpl::true_ {};
+}}
+
+#endif