]>
git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/wchar_t/1.cc
1 // Copyright (C) 2004-2024 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
18 // 27.6.1.2.3 character extractors
22 #include <testsuite_hooks.h>
27 const std::wstring
str_02(L
"coltrane playing 'softly as a morning sunrise'");
28 const std::wstring
str_03(L
"coltrane");
30 std::wstringbuf
isbuf_01(std::ios_base::in
);
31 std::wstringbuf
isbuf_02(str_02
, std::ios_base::in
);
32 std::wistream
is_01(0);
33 std::wistream
is_02(&isbuf_02
);
35 std::ios_base::iostate state1
, state2
, statefail
;
36 statefail
= std::ios_base::failbit
;
38 // template<_CharT, _Traits>
39 // basic_istream& operator>>(istream&, _CharT*)
43 typedef std::wios::traits_type ctraits_type
;
44 ctraits_type::int_type i1
, i2
;
46 state1
= is_01
.rdstate();
47 i1
= ctraits_type::length(array1
);
48 is_01
>> array1
; // should snake 0 characters, not alter stream state
49 i2
= ctraits_type::length(array1
);
50 state2
= is_01
.rdstate();
52 VERIFY( state1
!= state2
);
53 VERIFY( static_cast<bool>(state2
& statefail
) );
55 state1
= is_02
.rdstate();
56 is_02
>> array1
; // should snake L"coltrane"
57 state2
= is_02
.rdstate();
58 VERIFY( state1
== state2
);
59 VERIFY( !static_cast<bool>(state2
& statefail
) );
60 VERIFY( array1
[str_03
.size() - 1] == L
'e' );
61 array1
[str_03
.size()] = L
'\0';
62 VERIFY( !str_03
.compare(0, str_03
.size(), array1
) );
63 std::wistream::int_type int1
= is_02
.peek(); // should be L' '
64 VERIFY( int1
== L
' ' );
66 state1
= is_02
.rdstate();
67 is_02
>> array1
; // should snake L"playing" as sentry "eats" ws
68 state2
= is_02
.rdstate();
69 int1
= is_02
.peek(); // should be L' '
70 VERIFY( int1
== L
' ' );
71 VERIFY( state1
== state2
);
72 VERIFY( !static_cast<bool>(state2
& statefail
) );