1 files changed, 51 insertions, 0 deletions
diff --git a/libs/local_function/example/scope_exit.hpp b/libs/local_function/example/scope_exit.hpp
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+++ b/libs/local_function/example/scope_exit.hpp
@@ -0,0 +1,51 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/local_function
+
+#ifndef SCOPE_EXIT_HPP_
+#define SCOPE_EXIT_HPP_
+
+#include <boost/local_function.hpp>
+#include <boost/local_function/detail/preprocessor/line_counter.hpp>
+#include <boost/function.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/config.hpp>
+
+//[scope_exit_class
+struct scope_exit {
+    scope_exit(boost::function<void (void)> f): f_(f) {}
+    ~scope_exit(void) { f_(); }
+private:
+    boost::function<void (void)> f_;
+};
+//]
+
+// PRIVATE //
+
+//[scope_exit_end_macro
+#define SCOPE_EXIT_END_(id) \
+    BOOST_LOCAL_FUNCTION_NAME(BOOST_PP_CAT(scope_exit_func_, id)) \
+    scope_exit BOOST_PP_CAT(scope_exit_, id)( \
+            BOOST_PP_CAT(scope_exit_func_, id));
+//]
+
+// PUBLIC //
+
+#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
+#   define SCOPE_EXIT(void_or_seq) \
+        void BOOST_LOCAL_FUNCTION(void_or_seq)
+#else
+//[scope_exit_macro
+#   define SCOPE_EXIT(...) \
+        void BOOST_LOCAL_FUNCTION(__VA_ARGS__)
+//]
+#endif
+
+#define SCOPE_EXIT_END \
+    SCOPE_EXIT_END_(BOOST_LOCAL_FUNCTION_DETAIL_PP_LINE_COUNTER)
+
+#endif // #include guard
+