| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14) |
| |
| // <string_view> |
| |
| // constexpr int compare(basic_string_view str) const noexcept; |
| |
| #include <string_view> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "constexpr_char_traits.h" |
| |
| int sign(int x) { return x > 0 ? 1 : (x < 0 ? -1 : 0); } |
| |
| template <typename CharT> |
| void test1(std::basic_string_view<CharT> sv1, std::basic_string_view<CharT> sv2, int expected) { |
| assert(sign(sv1.compare(sv2)) == sign(expected)); |
| } |
| |
| template <typename CharT> |
| void test(const CharT* s1, const CharT* s2, int expected) { |
| typedef std::basic_string_view<CharT> string_view_t; |
| |
| string_view_t sv1(s1); |
| string_view_t sv2(s2); |
| test1(sv1, sv2, expected); |
| } |
| |
| int main(int, char**) { |
| test("", "", 0); |
| test("", "abcde", -5); |
| test("", "abcdefghij", -10); |
| test("", "abcdefghijklmnopqrst", -20); |
| test("abcde", "", 5); |
| test("abcde", "abcde", 0); |
| test("abcde", "abcdefghij", -5); |
| test("abcde", "abcdefghijklmnopqrst", -15); |
| test("abcdefghij", "", 10); |
| test("abcdefghij", "abcde", 5); |
| test("abcdefghij", "abcdefghij", 0); |
| test("abcdefghij", "abcdefghijklmnopqrst", -10); |
| test("abcdefghijklmnopqrst", "", 20); |
| test("abcdefghijklmnopqrst", "abcde", 15); |
| test("abcdefghijklmnopqrst", "abcdefghij", 10); |
| test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0); |
| |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| test(L"", L"", 0); |
| test(L"", L"abcde", -5); |
| test(L"", L"abcdefghij", -10); |
| test(L"", L"abcdefghijklmnopqrst", -20); |
| test(L"abcde", L"", 5); |
| test(L"abcde", L"abcde", 0); |
| test(L"abcde", L"abcdefghij", -5); |
| test(L"abcde", L"abcdefghijklmnopqrst", -15); |
| test(L"abcdefghij", L"", 10); |
| test(L"abcdefghij", L"abcde", 5); |
| test(L"abcdefghij", L"abcdefghij", 0); |
| test(L"abcdefghij", L"abcdefghijklmnopqrst", -10); |
| test(L"abcdefghijklmnopqrst", L"", 20); |
| test(L"abcdefghijklmnopqrst", L"abcde", 15); |
| test(L"abcdefghijklmnopqrst", L"abcdefghij", 10); |
| test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0); |
| #endif |
| |
| #if TEST_STD_VER >= 11 |
| test(u"", u"", 0); |
| test(u"", u"abcde", -5); |
| test(u"", u"abcdefghij", -10); |
| test(u"", u"abcdefghijklmnopqrst", -20); |
| test(u"abcde", u"", 5); |
| test(u"abcde", u"abcde", 0); |
| test(u"abcde", u"abcdefghij", -5); |
| test(u"abcde", u"abcdefghijklmnopqrst", -15); |
| test(u"abcdefghij", u"", 10); |
| test(u"abcdefghij", u"abcde", 5); |
| test(u"abcdefghij", u"abcdefghij", 0); |
| test(u"abcdefghij", u"abcdefghijklmnopqrst", -10); |
| test(u"abcdefghijklmnopqrst", u"", 20); |
| test(u"abcdefghijklmnopqrst", u"abcde", 15); |
| test(u"abcdefghijklmnopqrst", u"abcdefghij", 10); |
| test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0); |
| |
| test(U"", U"", 0); |
| test(U"", U"abcde", -5); |
| test(U"", U"abcdefghij", -10); |
| test(U"", U"abcdefghijklmnopqrst", -20); |
| test(U"abcde", U"", 5); |
| test(U"abcde", U"abcde", 0); |
| test(U"abcde", U"abcdefghij", -5); |
| test(U"abcde", U"abcdefghijklmnopqrst", -15); |
| test(U"abcdefghij", U"", 10); |
| test(U"abcdefghij", U"abcde", 5); |
| test(U"abcdefghij", U"abcdefghij", 0); |
| test(U"abcdefghij", U"abcdefghijklmnopqrst", -10); |
| test(U"abcdefghijklmnopqrst", U"", 20); |
| test(U"abcdefghijklmnopqrst", U"abcde", 15); |
| test(U"abcdefghijklmnopqrst", U"abcdefghij", 10); |
| test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0); |
| #endif |
| |
| #if TEST_STD_VER > 11 |
| { |
| typedef std::basic_string_view<char, constexpr_char_traits<char>> SV; |
| constexpr SV sv1{"abcde", 5}; |
| constexpr SV sv2{"abcde", 5}; |
| constexpr SV sv3{"edcba0", 6}; |
| static_assert(sv1.compare(sv2) == 0, ""); |
| static_assert(sv2.compare(sv1) == 0, ""); |
| static_assert(sv3.compare(sv2) > 0, ""); |
| static_assert(sv2.compare(sv3) < 0, ""); |
| } |
| #endif |
| |
| return 0; |
| } |