1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // REQUIRES: locale.en_US.UTF-8
11
12 // <ios>
13
14 // template <class charT, class traits> class basic_ios
15
16 // locale imbue(const locale& loc);
17
18 #include <ios>
19 #include <streambuf>
20 #include <cassert>
21
22 #include "platform_support.h" // locale name macros
23
24 struct testbuf
25 : public std::streambuf
26 {
27 };
28
29 bool f1_called = false;
30 bool f2_called = false;
31 bool f3_called = false;
32
f1(std::ios_base::event ev,std::ios_base & stream,int index)33 void f1(std::ios_base::event ev, std::ios_base& stream, int index)
34 {
35 if (ev == std::ios_base::imbue_event)
36 {
37 assert(!f1_called);
38 assert( f2_called);
39 assert( f3_called);
40 assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
41 assert(index == 4);
42 f1_called = true;
43 }
44 }
45
f2(std::ios_base::event ev,std::ios_base & stream,int index)46 void f2(std::ios_base::event ev, std::ios_base& stream, int index)
47 {
48 if (ev == std::ios_base::imbue_event)
49 {
50 assert(!f1_called);
51 assert(!f2_called);
52 assert( f3_called);
53 assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
54 assert(index == 5);
55 f2_called = true;
56 }
57 }
58
f3(std::ios_base::event ev,std::ios_base & stream,int index)59 void f3(std::ios_base::event ev, std::ios_base& stream, int index)
60 {
61 if (ev == std::ios_base::imbue_event)
62 {
63 assert(!f1_called);
64 assert(!f2_called);
65 assert(!f3_called);
66 assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
67 assert(index == 6);
68 f3_called = true;
69 }
70 }
71
main()72 int main()
73 {
74 {
75 std::ios ios(0);
76 ios.register_callback(f1, 4);
77 ios.register_callback(f2, 5);
78 ios.register_callback(f3, 6);
79 std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
80 assert(l.name() == std::string("C"));
81 assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
82 assert(f1_called);
83 assert(f2_called);
84 assert(f3_called);
85 }
86 f1_called = false;
87 f2_called = false;
88 f3_called = false;
89 {
90 testbuf sb;
91 std::ios ios(&sb);
92 ios.register_callback(f1, 4);
93 ios.register_callback(f2, 5);
94 ios.register_callback(f3, 6);
95 std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
96 assert(l.name() == std::string("C"));
97 assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
98 assert(sb.getloc().name() == std::string(LOCALE_en_US_UTF_8));
99 assert(f1_called);
100 assert(f2_called);
101 assert(f3_called);
102 }
103 }
104