| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <string> |
| |
| // size_type rfind(const basic_string& str, size_type pos = npos) const; // constexpr since C++20 |
| |
| #include <string> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "min_allocator.h" |
| |
| template <class S> |
| TEST_CONSTEXPR_CXX20 void |
| test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x) |
| { |
| LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos)); |
| assert(s.rfind(str, pos) == x); |
| if (x != S::npos) |
| assert(x <= pos && x + str.size() <= s.size()); |
| } |
| |
| template <class S> |
| TEST_CONSTEXPR_CXX20 void |
| test(const S& s, const S& str, typename S::size_type x) |
| { |
| LIBCPP_ASSERT_NOEXCEPT(s.rfind(str)); |
| assert(s.rfind(str) == x); |
| if (x != S::npos) |
| assert(0 <= x && x + str.size() <= s.size()); |
| } |
| |
| template <class S> |
| TEST_CONSTEXPR_CXX20 void test0() |
| { |
| test(S(""), S(""), 0, 0); |
| test(S(""), S("abcde"), 0, S::npos); |
| test(S(""), S("abcdeabcde"), 0, S::npos); |
| test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos); |
| test(S(""), S(""), 1, 0); |
| test(S(""), S("abcde"), 1, S::npos); |
| test(S(""), S("abcdeabcde"), 1, S::npos); |
| test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos); |
| test(S("abcde"), S(""), 0, 0); |
| test(S("abcde"), S("abcde"), 0, 0); |
| test(S("abcde"), S("abcdeabcde"), 0, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos); |
| test(S("abcde"), S(""), 1, 1); |
| test(S("abcde"), S("abcde"), 1, 0); |
| test(S("abcde"), S("abcdeabcde"), 1, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos); |
| test(S("abcde"), S(""), 2, 2); |
| test(S("abcde"), S("abcde"), 2, 0); |
| test(S("abcde"), S("abcdeabcde"), 2, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos); |
| test(S("abcde"), S(""), 4, 4); |
| test(S("abcde"), S("abcde"), 4, 0); |
| test(S("abcde"), S("abcdeabcde"), 4, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos); |
| test(S("abcde"), S(""), 5, 5); |
| test(S("abcde"), S("abcde"), 5, 0); |
| test(S("abcde"), S("abcdeabcde"), 5, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos); |
| test(S("abcde"), S(""), 6, 5); |
| test(S("abcde"), S("abcde"), 6, 0); |
| test(S("abcde"), S("abcdeabcde"), 6, S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos); |
| test(S("abcdeabcde"), S(""), 0, 0); |
| test(S("abcdeabcde"), S("abcde"), 0, 0); |
| test(S("abcdeabcde"), S("abcdeabcde"), 0, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos); |
| test(S("abcdeabcde"), S(""), 1, 1); |
| test(S("abcdeabcde"), S("abcde"), 1, 0); |
| test(S("abcdeabcde"), S("abcdeabcde"), 1, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos); |
| test(S("abcdeabcde"), S(""), 5, 5); |
| test(S("abcdeabcde"), S("abcde"), 5, 5); |
| test(S("abcdeabcde"), S("abcdeabcde"), 5, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos); |
| test(S("abcdeabcde"), S(""), 9, 9); |
| test(S("abcdeabcde"), S("abcde"), 9, 5); |
| test(S("abcdeabcde"), S("abcdeabcde"), 9, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos); |
| test(S("abcdeabcde"), S(""), 10, 10); |
| test(S("abcdeabcde"), S("abcde"), 10, 5); |
| test(S("abcdeabcde"), S("abcdeabcde"), 10, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos); |
| test(S("abcdeabcde"), S(""), 11, 10); |
| test(S("abcdeabcde"), S("abcde"), 11, 5); |
| test(S("abcdeabcde"), S("abcdeabcde"), 11, 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 0); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 0); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, 0); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, 0); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, 15); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, 0); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, 15); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, 0); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 21, 20); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, 15); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, 0); |
| } |
| |
| template <class S> |
| TEST_CONSTEXPR_CXX20 void test1() |
| { |
| test(S(""), S(""), 0); |
| test(S(""), S("abcde"), S::npos); |
| test(S(""), S("abcdeabcde"), S::npos); |
| test(S(""), S("abcdeabcdeabcdeabcde"), S::npos); |
| test(S("abcde"), S(""), 5); |
| test(S("abcde"), S("abcde"), 0); |
| test(S("abcde"), S("abcdeabcde"), S::npos); |
| test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos); |
| test(S("abcdeabcde"), S(""), 10); |
| test(S("abcdeabcde"), S("abcde"), 5); |
| test(S("abcdeabcde"), S("abcdeabcde"), 0); |
| test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos); |
| test(S("abcdeabcdeabcdeabcde"), S(""), 20); |
| test(S("abcdeabcdeabcdeabcde"), S("abcde"), 15); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10); |
| test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0); |
| } |
| |
| TEST_CONSTEXPR_CXX20 bool test() { |
| { |
| typedef std::string S; |
| test0<S>(); |
| test1<S>(); |
| } |
| #if TEST_STD_VER >= 11 |
| { |
| typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; |
| test0<S>(); |
| test1<S>(); |
| } |
| #endif |
| |
| #if TEST_STD_VER >= 11 |
| { // LWG 2946 |
| std::string s = " !"; |
| assert(s.rfind({"abc", 1}) == std::string::npos); |
| } |
| #endif |
| |
| return true; |
| } |
| |
| int main(int, char**) |
| { |
| test(); |
| #if TEST_STD_VER > 17 |
| static_assert(test()); |
| #endif |
| |
| return 0; |
| } |