1
2// Copyright (C) 2009-2012 Lorenzo Caminiti
3// Distributed under the Boost Software License, Version 1.0
4// (see accompanying file LICENSE_1_0.txt or a copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6// Home at http://www.boost.org/libs/local_function
7
8#include <boost/config.hpp>
9#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
10# error "variadic macros required"
11#else
12
13#include <boost/local_function.hpp>
14#include <boost/utility/identity_type.hpp>
15#include <boost/typeof/std/string.hpp> // Type-of registrations
16#include <boost/typeof/std/map.hpp> // needed for `NAME` macro.
17#include <map>
18#include <string>
19
20std::string cat(const std::string& x, const std::string& y) { return x + y; }
21
22template<typename V, typename K>
23struct key_sizeof {
24 static int const value;
25};
26
27template<typename V, typename K>
28int const key_sizeof<V, K>::value = sizeof(K);
29
30typedef int sign_t;
31
32int main(void) {
33 //[macro_commas
34 void BOOST_LOCAL_FUNCTION(
35 BOOST_IDENTITY_TYPE((const std::map<std::string, size_t>&)) m,
36 BOOST_IDENTITY_TYPE((::sign_t)) sign,
37 const size_t& factor,
38 default (key_sizeof<std::string, size_t>::value),
39 const std::string& separator, default cat(":", " ")
40 ) {
41 // Do something...
42 } BOOST_LOCAL_FUNCTION_NAME(f)
43 //]
44
45 std::map<std::string, size_t> m;
46 ::sign_t sign = -1;
47 f(m, sign);
48 return 0;
49}
50
51#endif // VARIADIC_MACROS
52
53

source code of boost/libs/local_function/test/macro_commas.cpp