1 // { dg-do run { target c++11 } }
2
3 // Copyright (C) 2015-2019 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 // 22.3.3.2.2 String conversions
21
22 #include <locale>
23 #include <string>
24 #include <testsuite_hooks.h>
25
26 template<typename Elem>
27 struct cvt : std::codecvt<Elem, char, std::mbstate_t> { };
28
29 template<typename Elem>
30 using str_conv = std::wstring_convert<cvt<Elem>, Elem>;
31
32 using std::string;
33 using std::u16string;
34 using std::u32string;
35
36 // test construction with state, for partial conversions
37
test01()38 void test01()
39 {
40 typedef str_conv<char> wsc;
41
42 wsc c;
43 string input = (const char*)u8"\u00a3 shillings pence";
44 string woutput = c.from_bytes(input.substr(0, 1));
45 auto partial_state = c.state();
46 auto partial_count = c.converted();
47
48 auto woutput2 = c.from_bytes("state reset on next conversion");
49 VERIFY( woutput2 == "state reset on next conversion" );
50
51 wsc c2(new cvt<char>, partial_state);
52 woutput += c2.from_bytes(input.substr(partial_count));
53 VERIFY( (const char*)u8"\u00a3 shillings pence" == woutput );
54
55 string roundtrip = c2.to_bytes(woutput);
56 VERIFY( input == roundtrip );
57 }
58
test02()59 void test02()
60 {
61 typedef str_conv<char16_t> wsc;
62
63 wsc c;
64 string input = (const char*)u8"\u00a3 shillings pence";
65 u16string woutput = c.from_bytes(input.substr(0, 1));
66 auto partial_state = c.state();
67 auto partial_count = c.converted();
68
69 auto woutput2 = c.from_bytes("state reset on next conversion");
70 VERIFY( woutput2 == u"state reset on next conversion" );
71
72 wsc c2(new cvt<char16_t>, partial_state);
73 woutput += c2.from_bytes(input.substr(partial_count));
74 VERIFY( u"\u00a3 shillings pence" == woutput );
75
76 string roundtrip = c2.to_bytes(woutput);
77 VERIFY( input == roundtrip );
78 }
79
test03()80 void test03()
81 {
82 typedef str_conv<char32_t> wsc;
83
84 wsc c;
85 string input = (const char*)u8"\u00a3 shillings pence";
86 u32string woutput = c.from_bytes(input.substr(0, 1));
87 auto partial_state = c.state();
88 auto partial_count = c.converted();
89
90 auto woutput2 = c.from_bytes("state reset on next conversion");
91 VERIFY( woutput2 == U"state reset on next conversion" );
92
93 wsc c2(new cvt<char32_t>, partial_state);
94 woutput += c2.from_bytes(input.substr(partial_count));
95 VERIFY( U"\u00a3 shillings pence" == woutput );
96
97 string roundtrip = c2.to_bytes(woutput);
98 VERIFY( input == roundtrip );
99 }
100
101
main()102 int main()
103 {
104 test01();
105 test02();
106 test03();
107 }
108