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- // { dg-options "-std=gnu++17" }
- // Copyright (C) 2013-2022 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 3, 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 COPYING3. If not see
- // <http://www.gnu.org/licenses/>.
- // basic_string_view::compare
- // int compare(const basic_string_view& str) const;
- // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
- // int compare(size_type pos1, size_type n1, const basic_string_view& str,
- // size_type pos2, size_type n2) const;
- // int compare(const charT* s) const;
- // int compare(size_type pos1, size_type n1,
- // const charT* s, size_type n2 = npos) const;
- // NB compare should be thought of as a lexographical compare, ie how
- // things would be sorted in a dictionary.
- namespace operations_compare_1 {
- enum want_value {lt=0, z=1, gt=2};
- int
- test_value(int result, want_value expected);
- int
- test_value(int result, want_value expected)
- {
- bool pass = false;
- switch (expected) {
- case lt:
- if (result < 0)
- pass = true;
- break;
- case z:
- if (!result)
- pass = true;
- break;
- case gt:
- if (result > 0)
- pass = true;
- break;
- default:
- pass = false; //should not get here
- }
- VERIFY(pass);
- return 0;
- }
- static int
- test01 ()
- {
- using gdb::string_view;
- string_view str_0("costa rica");
- string_view str_1("costa marbella");
- string_view str_2;
- //sanity check
- test_value(strcmp("costa marbella", "costa rica"), lt);
- test_value(strcmp("costa rica", "costa rica"), z);
- test_value(strcmp(str_1.data(), str_0.data()), lt);
- test_value(strcmp(str_0.data(), str_1.data()), gt);
- test_value(strncmp(str_1.data(), str_0.data(), 6), z);
- test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
- test_value(memcmp(str_1.data(), str_0.data(), 6), z);
- test_value(memcmp(str_1.data(), str_0.data(), 10), lt);
- test_value(memcmp("costa marbella", "costa rica", 10), lt);
- // int compare(const basic_string_view& str) const;
- test_value(str_0.compare(str_1), gt); //because r>m
- test_value(str_1.compare(str_0), lt); //because m<r
- str_2 = str_0;
- test_value(str_2.compare(str_0), z);
- str_2 = "cost";
- test_value(str_2.compare(str_0), lt);
- str_2 = "costa ricans";
- test_value(str_2.compare(str_0), gt);
- // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
- test_value(str_1.compare(0, 6, str_0), lt);
- str_2 = "cost";
- test_value(str_1.compare(0, 4, str_2), z);
- test_value(str_1.compare(0, 5, str_2), gt);
- // int compare(size_type pos1, size_type n1, const basic_string_view& str,
- // size_type pos2, size_type n2) const;
- test_value(str_1.compare(0, 6, str_0, 0, 6), z);
- test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
- test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
- // int compare(const charT* s) const;
- test_value(str_0.compare("costa marbella"), gt);
- test_value(str_1.compare("costa rica"), lt);
- str_2 = str_0;
- test_value(str_2.compare("costa rica"), z);
- test_value(str_2.compare("cost"), gt);
- test_value(str_2.compare("costa ricans"), lt);
- // int compare(size_type pos, size_type n1, const charT* str,
- // size_type n2 = npos) const;
- test_value(str_1.compare(0, 6, "costa rica", 0, 6), z);
- test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt);
- test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt);
- return 0;
- }
- static int
- main ()
- {
- test01();
- return 0;
- }
- } // namespace operations_compare_1
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