aboutsummaryrefslogtreecommitdiff
path: root/libstdc++-v3/testsuite/21_strings/char_traits_requirements.cc
blob: d2406ed3599af6ed6fc515e4fe6682bdd60fb5c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
// 1999-06-03 bkoz

// Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// 21.1.1 Characher traits requirements

#include <string>
#include <testsuite_hooks.h>

int test01(void)
{
  bool test = true;
  const std::string str_01("zuma beach");
  const std::string str_02("montara and ocean beach");

  // 21.1.1 character traits requirements

  // Key for decoding what function signatures really mean:
  // X 		== char_traits<_CharT>
  // [c,d] 	== _CharT
  // [p,q] 	== const _CharT*
  // s 		== _CharT*
  // [n,i,j] 	== size_t
  // f 		== X::int_type
  // pos 	== X::pos_type
  // state 	== X::state_type

  // void X::assign(char c, char d)
  // assigns c = d;
  char c1 = 'z';
  char c2 = 'u';
  VERIFY( c1 != c2 );
  std::char_traits<char>::assign(c1,c2);
  VERIFY( c1 == 'u' );

  // char* X::move(char* s, const char* p, size_t n)
  // for each i in [0,n) performs X::assign(s[i], p[i]). Copies
  // correctly even where p is in [s, s + n), and yields s.
  char array1[] = {'z', 'u', 'm', 'a', ' ', 'b', 'e', 'a', 'c', 'h',  0};
  const char str_lit1[] = "montara and ocean beach";
  int len = sizeof(str_lit1) + sizeof(array1) - 1; // two terminating chars
  char array2[len];

  VERIFY( str_lit1[0] == 'm' );
  c1 = array2[0];
  c2 = str_lit1[0];
  char c3 = array2[1];
  char c4 = str_lit1[1];
  std::char_traits<char>::move(array2, str_lit1, 0);
  VERIFY( array2[0] == c1 );
  VERIFY( str_lit1[0] == c2 );
  std::char_traits<char>::move(array2, str_lit1, 1);
  VERIFY( array2[0] == c2 );
  VERIFY( str_lit1[0] == c2 );
  VERIFY( array2[1] == c3 );
  VERIFY( str_lit1[1] == c4 );
  std::char_traits<char>::move(array2, str_lit1, 2);
  VERIFY( array2[0] == c2 );
  VERIFY( str_lit1[0] == c2 );
  VERIFY( array2[1] == c4 );
  VERIFY( str_lit1[1] == c4 );

  char* pc1 = array1 + 1;
  c1 = pc1[0];
  c2 = array1[0];
  VERIFY( c1 != c2 );
  char* pc2 = std::char_traits<char>::move(array1, pc1, 0);
  c3 = pc1[0];
  c4 = array1[0];
  VERIFY( c1 == c3 );
  VERIFY( c2 == c4 );
  VERIFY( pc2 == array1 );

  c1 = pc1[0];
  c2 = array1[0];
  char* pc3 = pc1;
  pc2 = std::char_traits<char>::move(array1, pc1, 10);
  c3 = pc1[0];
  c4 = array1[0];
  VERIFY( c1 != c3 ); // underlying char array changed.
  VERIFY( c4 != c3 );
  VERIFY( pc2 == array1 );
  VERIFY( pc3 == pc1 ); // but pointers o-tay
  c1 = *(str_01.data());
  c2 = array1[0];
  VERIFY( c1 != c2 );

#ifdef DEBUG_ASSERT
  assert(test);
#endif
  return test;
}

#if _GLIBCPP_USE_WCHAR_T
int test02(void)
{
  bool test = true;
  const std::wstring str_01(L"zuma beach");
  const std::wstring str_02(L"montara and ocean beach");
 
  // 21.1.1 character traits requirements

  // Key for decoding what function signatures really mean:
  // X                == char_traits<_CharT>
  // [c,d]    == _CharT
  // [p,q]    == const _CharT*
  // s                == _CharT*
  // [n,i,j]  == size_t
  // f                == X::int_type
  // pos      == X::pos_type
  // state    == X::state_type

  // void X::assign(wchar_t c, wchar_t d)
  // assigns c = d;
  wchar_t c1 = L'z';
  wchar_t c2 = L'u';
  VERIFY( c1 != c2 );
  std::char_traits<wchar_t>::assign(c1,c2);
  VERIFY( c1 == L'u' );

  // char* X::move(char* s, const char* p, size_t n)
  // for each i in [0,n) performs X::assign(s[i], p[i]). Copies
  // correctly even where p is in [s, s + n), and yields s.   
  wchar_t array1[] = {L'z', L'u', L'm', L'a', L' ', L'b', L'e', L'a', L'c', L'h',  0};
  const wchar_t str_lit1[] = L"montara and ocean beach";
  int len = sizeof(str_lit1) + sizeof(array1) - 1; // two terminating chars
  wchar_t array2[len];

  VERIFY( str_lit1[0] == 'm' );
  c1 = array2[0];
  c2 = str_lit1[0];
  wchar_t c3 = array2[1];
  wchar_t c4 = str_lit1[1];
  std::char_traits<wchar_t>::move(array2, str_lit1, 0);
  VERIFY( array2[0] == c1 );
  VERIFY( str_lit1[0] == c2 );
  std::char_traits<wchar_t>::move(array2, str_lit1, 1);
  VERIFY( array2[0] == c2 );
  VERIFY( str_lit1[0] == c2 );
  VERIFY( array2[1] == c3 );
  VERIFY( str_lit1[1] == c4 );
  std::char_traits<wchar_t>::move(array2, str_lit1, 2);
  VERIFY( array2[0] == c2 );
  VERIFY( str_lit1[0] == c2 );
  VERIFY( array2[1] == c4 );
  VERIFY( str_lit1[1] == c4 );
 
  wchar_t* pc1 = array1 + 1;
  c1 = pc1[0];
  c2 = array1[0];
  VERIFY( c1 != c2 );
  wchar_t* pc2 = std::char_traits<wchar_t>::move(array1, pc1, 0);
  c3 = pc1[0];
  c4 = array1[0];
  VERIFY( c1 == c3 );
  VERIFY( c2 == c4 );
  VERIFY( pc2 == array1 );

  c1 = pc1[0];
  c2 = array1[0];
  wchar_t* pc3 = pc1;
  pc2 = std::char_traits<wchar_t>::move(array1, pc1, 10);
  c3 = pc1[0];
  c4 = array1[0];
  VERIFY( c1 != c3 ); // underlying wchar_t array changed.
  VERIFY( c4 != c3 );
  VERIFY( pc2 == array1 );
  VERIFY( pc3 == pc1 ); // but pointers o-tay
  c1 = *(str_01.data());
  c2 = array1[0];
  VERIFY( c1 != c2 );
 
#ifdef DEBUG_ASSERT
  assert(test);
#endif

  return test;
}
#endif  //_GLIBCPP_USE_WCHAR_T

int main()
{ 
  test01();
#if _GLIBCPP_USE_WCHAR_T
  test02();
#endif
  return 0;
}