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- // 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
- #include <boost/config.hpp>
- #ifdef BOOST_NO_CXX11_VARIADIC_MACROS
- # error "variadic macros required"
- #else
- #include <boost/local_function.hpp>
- #include <boost/function.hpp>
- #include <boost/typeof/std/string.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <string>
- boost::function<void (const std::string&)> set;
- boost::function<const std::string& (void)> get;
- void action(void) {
- // State `message` hidden behind access functions from here.
- BOOST_TEST(get() == "abc");
- set("xyz");
- BOOST_TEST(get() == "xyz");
- }
- int main(void) {
- std::string message = "abc"; // Reference valid where closure used.
-
- void BOOST_LOCAL_FUNCTION(bind& message, const std::string& text) {
- message = text;
- } BOOST_LOCAL_FUNCTION_NAME(s)
- set = s;
- const std::string& BOOST_LOCAL_FUNCTION(const bind& message) {
- return message;
- } BOOST_LOCAL_FUNCTION_NAME(g)
- get = g;
-
- action();
- return boost::report_errors();
- }
- #endif // VARIADIC_MACROS
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