1// { dg-options "-std=gnu++17" }
2
3// Copyright (C) 2013-2020 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// basic_string_view::compare
21// int compare(const basic_string_view& str) const;
22// int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
23// int compare(size_type pos1, size_type n1, const basic_string_view& str,
24//             size_type pos2, size_type n2) const;
25// int compare(const charT* s) const;
26// int compare(size_type pos1, size_type n1,
27//             const charT* s, size_type n2 = npos) const;
28
29// NB compare should be thought of as a lexographical compare, ie how
30// things would be sorted in a dictionary.
31
32namespace operations_compare_1 {
33
34enum want_value {lt=0, z=1, gt=2};
35
36int
37test_value(int result, want_value expected);
38
39int
40test_value(int result, want_value expected)
41{
42  bool pass = false;
43
44  switch (expected) {
45  case lt:
46    if (result < 0)
47      pass = true;
48    break;
49  case z:
50    if (!result)
51      pass = true;
52    break;
53  case gt:
54    if (result > 0)
55      pass = true;
56    break;
57  default:
58    pass = false; //should not get here
59  }
60  VERIFY(pass);
61  return 0;
62}
63
64static int
65test01 ()
66{
67  using gdb::string_view;
68
69  string_view 	str_0("costa rica");
70  string_view 	str_1("costa marbella");
71  string_view 	str_2;
72
73  //sanity check
74  test_value(strcmp("costa marbella", "costa rica"), lt);
75  test_value(strcmp("costa rica", "costa rica"), z);
76  test_value(strcmp(str_1.data(), str_0.data()), lt);
77  test_value(strcmp(str_0.data(), str_1.data()), gt);
78  test_value(strncmp(str_1.data(), str_0.data(), 6), z);
79  test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
80  test_value(memcmp(str_1.data(), str_0.data(), 6), z);
81  test_value(memcmp(str_1.data(), str_0.data(), 10), lt);
82  test_value(memcmp("costa marbella", "costa rica", 10), lt);
83
84  // int compare(const basic_string_view& str) const;
85  test_value(str_0.compare(str_1), gt); //because r>m
86  test_value(str_1.compare(str_0), lt); //because m<r
87  str_2 = str_0;
88  test_value(str_2.compare(str_0), z);
89  str_2 = "cost";
90  test_value(str_2.compare(str_0), lt);
91  str_2 = "costa ricans";
92  test_value(str_2.compare(str_0), gt);
93
94  // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
95  test_value(str_1.compare(0, 6, str_0), lt);
96  str_2 = "cost";
97  test_value(str_1.compare(0, 4, str_2), z);
98  test_value(str_1.compare(0, 5, str_2), gt);
99
100  // int compare(size_type pos1, size_type n1, const basic_string_view& str,
101  //		 size_type pos2, size_type n2) const;
102  test_value(str_1.compare(0, 6, str_0, 0, 6), z);
103  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
104  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
105
106  // int compare(const charT* s) const;
107  test_value(str_0.compare("costa marbella"), gt);
108  test_value(str_1.compare("costa rica"), lt);
109  str_2 = str_0;
110  test_value(str_2.compare("costa rica"), z);
111  test_value(str_2.compare("cost"), gt);
112  test_value(str_2.compare("costa ricans"), lt);
113
114  // int compare(size_type pos, size_type n1, const charT* str,
115  //             size_type n2 = npos) const;
116  test_value(str_1.compare(0, 6, "costa rica", 0, 6), z);
117  test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt);
118  test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt);
119
120  return 0;
121}
122
123
124static int
125main ()
126{
127  test01();
128
129  return 0;
130}
131
132} // namespace operations_compare_1
133