1// 1999-06-08 bkoz
2
3// Copyright (C) 1999, 2003 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// 21.3 template class basic_string
22
23#include <string>
24#include <stdexcept>
25#include <testsuite_hooks.h>
26
27// Do a quick sanity check on known problems with element access and
28// ref-counted strings. These should all pass, regardless of the
29// underlying string implementation, of course.
30bool test01(void)
31{
32  bool test __attribute__((unused)) = true;
33  typedef std::string::size_type csize_type;
34  typedef std::string::iterator siterator;
35  typedef std::string::reverse_iterator sriterator;
36  csize_type csz01, csz02;
37  siterator it1;
38  sriterator rit1;
39
40  std::string str01("montara beach, half moon bay");
41  const std::string str02("ocean beach, san francisco");
42  std::string str03;
43
44  // 21.3 p 5
45
46  // References, pointers, and iterators referring to the elements of
47  // a basic_string may be invalidated by the following uses of that
48  // basic_string object:
49
50  // ...
51
52  // Susequent to any of the above uses except the forms of insert()
53  // and erase() which return iterators, the first call to non-const
54  // member functions operator[](), at(), begin(), rbegin(), end(), or
55  // rend()
56
57  str03 = str01;
58  it1 = str01.begin();
59  *it1 = 'x';
60  VERIFY( str01[0] == 'x' );
61  VERIFY( str03[0] == 'm' );
62
63  str03 = str01;
64  csz01 = str01.size();
65  rit1 = str01.rbegin(); // NB: Pointing at one-past the end, so ...
66  *rit1 = 'z'; 		 // ... but it's taken care of here
67  VERIFY( str01[csz01 - 1] == 'z' );
68  VERIFY( str03[csz01 - 1] == 'y' );
69
70  str03 = str01;
71  csz01 = str01.size();
72  std::string::reference r1 = str01.at(csz01 - 2);
73  VERIFY( str03 == str01 );
74  r1 = 'd';
75  VERIFY( str01[csz01 - 2] == 'd' );
76  VERIFY( str03[csz01 - 2] == 'a' );
77
78  str03 = str01;
79  csz01 = str01.size();
80  std::string::reference r2 = str01[csz01 - 3];
81  VERIFY( str03 == str01 );
82  r2 = 'w';
83  VERIFY( str01[csz01 - 3] == 'w' );
84  VERIFY( str03[csz01 - 3] == 'b' );
85
86  str03 = str01;
87  csz02 = str01.size();
88  it1 = str01.end();
89  VERIFY( str03 == str01 );
90  --it1;
91  *it1 = 'q';
92  VERIFY( str01[csz02 - 1] == 'q' );
93  VERIFY( str03[csz02 - 1] == 'z' );
94
95  str03 = str01;
96  rit1 = str01.rend();
97  VERIFY( str03 == str01 );
98  --rit1;
99  *rit1 = 'p';
100  VERIFY( str01[0] == 'p' );
101  VERIFY( str03[0] == 'x' );
102
103  // need to also test for const begin/const end
104  return test;
105}
106
107int main()
108{
109  test01();
110  return 0;
111}
112