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/functional/overloaded_function.hpp> // For overloading. |
15 | #include <boost/typeof/std/string.hpp> |
16 | #include <boost/detail/lightweight_test.hpp> |
17 | #include <string> |
18 | |
19 | //[overload_decl |
20 | int add_i(int x, int y) { return x + y; } |
21 | //] |
22 | |
23 | int main(void) { |
24 | //[overload |
25 | std::string s = "abc" ; |
26 | std::string BOOST_LOCAL_FUNCTION( |
27 | const bind& s, const std::string& x) { |
28 | return s + x; |
29 | } BOOST_LOCAL_FUNCTION_NAME(add_s) |
30 | |
31 | double d = 1.23; |
32 | double BOOST_LOCAL_FUNCTION(const bind d, double x, double y, default 0) { |
33 | return d + x + y; |
34 | } BOOST_LOCAL_FUNCTION_NAME(add_d) |
35 | |
36 | boost::overloaded_function< |
37 | std::string (const std::string&) |
38 | , double (double) |
39 | , double (double, double) // Overload giving default param. |
40 | , int (int, int) |
41 | > add(add_s, add_d, add_d, add_i); // Overloaded function object. |
42 | |
43 | BOOST_TEST(add("xyz" ) == "abcxyz" ); // Call `add_s`. |
44 | BOOST_TEST((4.44 - add(3.21)) <= 0.001); // Call `add_d` (no default). |
45 | BOOST_TEST((44.44 - add(3.21, 40.0)) <= 0.001); // Call `add_d`. |
46 | BOOST_TEST(add(1, 2) == 3); // Call `add_i`. |
47 | //] |
48 | return boost::report_errors(); |
49 | } |
50 | |
51 | #endif // VARIADIC_MACROS |
52 | |
53 | |