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4415f7a5 | 1 | // { dg-options "-std=gnu++11" } |
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2 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
3 | // | |
5624e564 | 4 | // Copyright (C) 2005-2015 Free Software Foundation, Inc. |
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5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | // | |
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | // | |
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | // 20.7.15 polymorphic function object wrapper | |
22 | #include <functional> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | using namespace __gnu_test; | |
26 | ||
27 | bool test __attribute__((unused)) = true; | |
28 | ||
29 | struct secret {}; | |
30 | ||
31 | struct noncopyable_function_object_type | |
32 | { | |
33 | noncopyable_function_object_type(secret) {} | |
34 | ||
35 | int operator()() const { return 42; } | |
36 | int operator()() { return 17; } | |
37 | ||
38 | private: | |
39 | noncopyable_function_object_type(); | |
40 | noncopyable_function_object_type(const noncopyable_function_object_type&); | |
41 | void operator=(const noncopyable_function_object_type&); | |
42 | }; | |
43 | ||
44 | // Put reference_wrappers into function<> wrappers | |
45 | void test06() | |
46 | { | |
47 | using std::function; | |
48 | using std::ref; | |
49 | using std::cref; | |
50 | ||
51 | secret password; | |
52 | noncopyable_function_object_type x(password); | |
53 | ||
54 | function<int()> f(ref(x)); | |
55 | VERIFY( f ); | |
56 | VERIFY( f() == 17 ); | |
57 | VERIFY( f.target_type() == typeid(noncopyable_function_object_type) ); | |
58 | VERIFY( f.target<noncopyable_function_object_type>() == &x ); | |
59 | ||
60 | function<int()> g = f; | |
61 | VERIFY( g ); | |
62 | VERIFY( g() == 17 ); | |
63 | VERIFY( g.target_type() == typeid(noncopyable_function_object_type) ); | |
64 | VERIFY( g.target<noncopyable_function_object_type>() == &x ); | |
65 | ||
66 | function<int()> h = cref(x); | |
67 | VERIFY( h ); | |
68 | VERIFY( h() == 42 ); | |
69 | VERIFY( h.target_type() == typeid(noncopyable_function_object_type) ); | |
70 | VERIFY( h.target<const noncopyable_function_object_type>() == &x ); | |
71 | VERIFY( h.target<const noncopyable_function_object_type>() == &x ); | |
72 | ||
73 | const function<int()>& hc = h; | |
74 | VERIFY( h.target<noncopyable_function_object_type>() == 0 ); | |
75 | VERIFY( hc.target<noncopyable_function_object_type>() == &x ); | |
76 | } | |
77 | ||
78 | int main() | |
79 | { | |
80 | test06(); | |
81 | return 0; | |
82 | } |