1 // 1999-06-03 bkoz
2
3 // Copyright (C) 1999-2018 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 // 21.1.1 Characher traits requirements
21
22 #include <string>
23 #include <testsuite_hooks.h>
24
test01(void)25 void test01(void)
26 {
27 const std::string str_01("zuma beach");
28 const std::string str_02("montara and ocean beach");
29
30 // 21.1.1 character traits requirements
31
32 // Key for decoding what function signatures really mean:
33 // X == char_traits<_CharT>
34 // [c,d] == _CharT
35 // [p,q] == const _CharT*
36 // s == _CharT*
37 // [n,i,j] == size_t
38 // f == X::int_type
39 // pos == X::pos_type
40 // state == X::state_type
41
42 // void X::assign(char c, char d)
43 // assigns c = d;
44 char c1 = 'z';
45 char c2 = 'u';
46 VERIFY( c1 != c2 );
47 std::char_traits<char>::assign(c1,c2);
48 VERIFY( c1 == 'u' );
49
50 // char* X::move(char* s, const char* p, size_t n)
51 // for each i in [0,n) performs X::assign(s[i], p[i]). Copies
52 // correctly even where p is in [s, s + n), and yields s.
53 char array1[] = {'z', 'u', 'm', 'a', ' ', 'b', 'e', 'a', 'c', 'h', 0};
54 const char str_lit1[] = "montara and ocean beach";
55 const char str_lit2[] = "boracay, philippines";
56 const int len1 = sizeof(str_lit1)/sizeof(char);
57 const int len2 = sizeof(str_lit2)/sizeof(char);
58 char array2[len1 + len2 - 1]; // two terminating chars
59 std::char_traits<char>::copy(array2, str_lit2, len2);
60
61 VERIFY( str_lit1[0] == 'm' );
62 c1 = array2[0];
63 c2 = str_lit1[0];
64 char c3 = array2[1];
65 char c4 = str_lit1[1];
66 std::char_traits<char>::move(array2, str_lit1, 0);
67 VERIFY( array2[0] == c1 );
68 VERIFY( str_lit1[0] == c2 );
69 std::char_traits<char>::move(array2, str_lit1, 1);
70 VERIFY( array2[0] == c2 );
71 VERIFY( str_lit1[0] == c2 );
72 VERIFY( array2[1] == c3 );
73 VERIFY( str_lit1[1] == c4 );
74 std::char_traits<char>::move(array2, str_lit1, 2);
75 VERIFY( array2[0] == c2 );
76 VERIFY( str_lit1[0] == c2 );
77 VERIFY( array2[1] == c4 );
78 VERIFY( str_lit1[1] == c4 );
79
80 char* pc1 = array1 + 1;
81 c1 = pc1[0];
82 c2 = array1[0];
83 VERIFY( c1 != c2 );
84 char* pc2 = std::char_traits<char>::move(array1, pc1, 0);
85 c3 = pc1[0];
86 c4 = array1[0];
87 VERIFY( c1 == c3 );
88 VERIFY( c2 == c4 );
89 VERIFY( pc2 == array1 );
90
91 c1 = pc1[0];
92 c2 = array1[0];
93 char* pc3 = pc1;
94 pc2 = std::char_traits<char>::move(array1, pc1, 10);
95 c3 = pc1[0];
96 c4 = array1[0];
97 VERIFY( c1 != c3 ); // underlying char array changed.
98 VERIFY( c4 != c3 );
99 VERIFY( pc2 == array1 );
100 VERIFY( pc3 == pc1 ); // but pointers o-tay
101 c1 = *(str_01.data());
102 c2 = array1[0];
103 VERIFY( c1 != c2 );
104 }
105
main()106 int main()
107 {
108 test01();
109 return 0;
110 }
111