Added boost header

test/external/boost/msm/back/args.hpp

@@ -0,0 +1,68 @@
+// Copyright 2008 Christophe Henry
+// henry UNDERSCORE christophe AT hotmail DOT com
+// This is an extended version of the state machine available in the boost::mpl library
+// Distributed under the same license as the original.
+// Copyright for the original version:
+// Copyright 2005 David Abrahams and Aleksey Gurtovoy. 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_MSM_BACK_ARGS_H
+#define BOOST_MSM_BACK_ARGS_H
+
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/preprocessor/arithmetic/sub.hpp>
+#include <boost/preprocessor/punctuation/comma_if.hpp>
+#include <boost/preprocessor/control/expr_if.hpp> 
+#include <boost/preprocessor/punctuation/comma.hpp>
+#include <boost/preprocessor/arithmetic/add.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/comparison/less.hpp>
+#include <boost/preprocessor/arithmetic/dec.hpp>
+#include <boost/function.hpp>
+
+#ifndef BOOST_MSM_VISITOR_ARG_SIZE
+#define BOOST_MSM_VISITOR_ARG_SIZE 2 // default max number of arguments
+#endif
+
+namespace boost { namespace msm { namespace back
+{
+struct no_args {};
+#define MSM_ARGS_TYPEDEF_SUB(z, n, unused) typedef ARG ## n argument ## n ;
+#define MSM_ARGS_PRINT(z, n, data) data
+#define MSM_ARGS_NONE_PRINT(z, n, data) class data ## n = no_args                          \
+    BOOST_PP_COMMA_IF( BOOST_PP_LESS(n, BOOST_PP_DEC(BOOST_MSM_VISITOR_ARG_SIZE) ) )                  
+
+#define MSM_VISITOR_MAIN_ARGS(n)                                                        \
+    template <class RES,                                                                \
+              BOOST_PP_REPEAT(BOOST_MSM_VISITOR_ARG_SIZE, MSM_ARGS_NONE_PRINT, ARG)>    \
+    struct args                                                                         \
+    {                                                                                   \
+        typedef ::boost::function<RES(BOOST_PP_ENUM_PARAMS(n, ARG))> type;              \
+        enum {args_number=n};                                                           \
+        BOOST_PP_REPEAT(n, MSM_ARGS_TYPEDEF_SUB, ~ )                                    \
+    };
+
+#define MSM_VISITOR_ARGS(z, n, unused)                                                              \
+    template <class RES BOOST_PP_COMMA_IF(n) BOOST_PP_ENUM_PARAMS(n, class ARG)>                    \
+    struct args<RES,                                                                                \
+                BOOST_PP_ENUM_PARAMS(n,ARG)                                                         \
+                BOOST_PP_COMMA_IF(n)                                                                \
+                BOOST_PP_ENUM(BOOST_PP_SUB(BOOST_MSM_VISITOR_ARG_SIZE,n), MSM_ARGS_PRINT, no_args)     \
+                >                                                                                   \
+    {                                                                                               \
+        typedef ::boost::function<RES(BOOST_PP_ENUM_PARAMS(n, ARG))> type;                          \
+        enum {args_number=n};                                                                       \
+        BOOST_PP_REPEAT(n, MSM_ARGS_TYPEDEF_SUB, ~ )                                                \
+    };
+MSM_VISITOR_MAIN_ARGS(BOOST_MSM_VISITOR_ARG_SIZE)
+BOOST_PP_REPEAT(BOOST_MSM_VISITOR_ARG_SIZE, MSM_VISITOR_ARGS, ~)
+
+#undef MSM_VISITOR_ARGS
+#undef MSM_ARGS_PRINT
+
+}}}
+
+#endif //BOOST_MSM_BACK_ARGS_H
+