1// 1999-10-14 bkoz
2
3// Copyright (C) 1999, 2001, 2003, 2005 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30// 27.6.1.1.2 class basic_istream::sentry
31
32#include <istream>
33#include <sstream>
34#include <ext/pod_char_traits.h>
35#include <testsuite_hooks.h>
36#include <testsuite_character.h>
37
38void test01()
39{
40  using namespace std;
41  using __gnu_test::pod_ushort;
42  typedef basic_string<pod_ushort> 	string_type;
43  typedef basic_stringbuf<pod_ushort> 	stringbuf_type;
44  typedef basic_istream<pod_ushort> 	istream_type;
45
46  bool test __attribute__((unused)) = true;
47
48
49  const string_type str01;
50  stringbuf_type strbuf01;
51  stringbuf_type strbuf02(str01);
52  istream_type istr01(&strbuf01);
53  istream_type istr02(&strbuf02);
54
55  // test negatives
56  try
57    {
58      istream_type::sentry sentry01(istr01);
59    }
60  catch (std::bad_cast& obj)
61    {
62      // Ok, throws bad_cast because locale has no ctype facet.
63    }
64  catch (...)
65    {
66      VERIFY( false );
67    }
68
69  try
70    {
71      istream_type::sentry sentry02(istr01, true);
72    }
73  catch (std::bad_cast& obj)
74    {
75      // Ok, throws bad_cast because locale has no ctype facet.
76    }
77  catch (...)
78    {
79      VERIFY( false );
80    }
81
82  // imbued.
83  const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
84  istr01.imbue(loc);
85  try
86    {
87      istream_type::sentry sentry01(istr01);
88      VERIFY( bool(sentry01) == false );
89    }
90  catch (...)
91    {
92      VERIFY( false );
93    }
94
95  try
96    {
97      istream_type::sentry sentry02(istr01, true);
98      VERIFY( bool(sentry02) == false );
99    }
100  catch (...)
101    {
102      VERIFY( false );
103    }
104
105  // test positive
106  try
107    {
108      istream_type::sentry sentry03(istr02);
109    }
110  catch (std::bad_cast& obj)
111    {
112      // Ok, throws bad_cast because locale has no ctype facet.
113    }
114  catch (...)
115    {
116      VERIFY( false );
117    }
118
119  try
120    {
121      istream_type::sentry sentry04(istr02, true);
122    }
123  catch (std::bad_cast& obj)
124    {
125      // Ok, throws bad_cast because locale has no ctype facet.
126    }
127  catch (...)
128    {
129      VERIFY( false );
130    }
131
132  // imbued.
133  istr02.imbue(loc);
134  try
135    {
136      istr02.clear();
137      istream_type::sentry sentry03(istr02);
138      // ... as eofbit set.
139      VERIFY( bool(sentry03) == false );
140    }
141  catch (...)
142    {
143      VERIFY( false );
144    }
145
146  try
147    {
148      istr02.clear();
149      istream_type::sentry sentry04(istr02, true);
150      VERIFY( bool(sentry04) == true );
151    }
152  catch (...)
153    {
154      VERIFY( false );
155    }
156}
157
158#if !__GXX_WEAK__
159// Explicitly instantiate for systems with no COMDAT or weak support.
160template
161  std::basic_string<__gnu_test::pod_ushort>::size_type
162  std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_max_size;
163
164template
165  __gnu_test::pod_ushort
166  std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_terminal;
167#endif
168
169int main()
170{
171  test01();
172  return 0;
173}
174