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