172 lines
6.3 KiB
C++
172 lines
6.3 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string_view>
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// constexpr size_type rfind(const charT* s, size_type pos = npos) const;
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#include <experimental/string_view>
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#include <cassert>
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#include "constexpr_char_traits.hpp"
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template <class S>
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void
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test(const S& s, const typename S::value_type* str, typename S::size_type pos,
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typename S::size_type x)
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{
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assert(s.rfind(str, pos) == x);
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if (x != S::npos)
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{
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typename S::size_type n = S::traits_type::length(str);
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assert(x <= pos && x + n <= s.size());
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}
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}
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template <class S>
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void
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test(const S& s, const typename S::value_type* str, typename S::size_type x)
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{
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assert(s.rfind(str) == x);
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if (x != S::npos)
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{
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typename S::size_type pos = s.size();
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typename S::size_type n = S::traits_type::length(str);
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assert(x <= pos && x + n <= s.size());
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}
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}
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template <class S>
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void test0()
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{
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test(S(""), "", 0, 0);
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test(S(""), "abcde", 0, S::npos);
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test(S(""), "abcdeabcde", 0, S::npos);
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test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
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test(S(""), "", 1, 0);
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test(S(""), "abcde", 1, S::npos);
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test(S(""), "abcdeabcde", 1, S::npos);
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test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
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test(S("abcde"), "", 0, 0);
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test(S("abcde"), "abcde", 0, 0);
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test(S("abcde"), "abcdeabcde", 0, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
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test(S("abcde"), "", 1, 1);
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test(S("abcde"), "abcde", 1, 0);
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test(S("abcde"), "abcdeabcde", 1, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
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test(S("abcde"), "", 2, 2);
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test(S("abcde"), "abcde", 2, 0);
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test(S("abcde"), "abcdeabcde", 2, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
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test(S("abcde"), "", 4, 4);
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test(S("abcde"), "abcde", 4, 0);
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test(S("abcde"), "abcdeabcde", 4, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
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test(S("abcde"), "", 5, 5);
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test(S("abcde"), "abcde", 5, 0);
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test(S("abcde"), "abcdeabcde", 5, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
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test(S("abcde"), "", 6, 5);
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test(S("abcde"), "abcde", 6, 0);
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test(S("abcde"), "abcdeabcde", 6, S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
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test(S("abcdeabcde"), "", 0, 0);
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test(S("abcdeabcde"), "abcde", 0, 0);
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test(S("abcdeabcde"), "abcdeabcde", 0, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
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test(S("abcdeabcde"), "", 1, 1);
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test(S("abcdeabcde"), "abcde", 1, 0);
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test(S("abcdeabcde"), "abcdeabcde", 1, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
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test(S("abcdeabcde"), "", 5, 5);
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test(S("abcdeabcde"), "abcde", 5, 5);
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test(S("abcdeabcde"), "abcdeabcde", 5, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
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test(S("abcdeabcde"), "", 9, 9);
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test(S("abcdeabcde"), "abcde", 9, 5);
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test(S("abcdeabcde"), "abcdeabcde", 9, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
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test(S("abcdeabcde"), "", 10, 10);
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test(S("abcdeabcde"), "abcde", 10, 5);
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test(S("abcdeabcde"), "abcdeabcde", 10, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
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test(S("abcdeabcde"), "", 11, 10);
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test(S("abcdeabcde"), "abcde", 11, 5);
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test(S("abcdeabcde"), "abcdeabcde", 11, 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
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test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
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test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0);
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test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0);
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test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 15);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0);
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test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 15);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0);
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test(S("abcdeabcdeabcdeabcde"), "", 21, 20);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 15);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0);
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}
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template <class S>
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void test1()
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{
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test(S(""), "", 0);
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test(S(""), "abcde", S::npos);
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test(S(""), "abcdeabcde", S::npos);
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test(S(""), "abcdeabcdeabcdeabcde", S::npos);
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test(S("abcde"), "", 5);
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test(S("abcde"), "abcde", 0);
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test(S("abcde"), "abcdeabcde", S::npos);
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test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
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test(S("abcdeabcde"), "", 10);
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test(S("abcdeabcde"), "abcde", 5);
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test(S("abcdeabcde"), "abcdeabcde", 0);
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test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
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test(S("abcdeabcdeabcdeabcde"), "", 20);
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test(S("abcdeabcdeabcdeabcde"), "abcde", 15);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10);
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test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
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}
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int main()
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{
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{
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typedef std::experimental::string_view S;
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test0<S>();
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test1<S>();
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}
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#if _LIBCPP_STD_VER > 11
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{
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typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
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constexpr SV sv1;
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constexpr SV sv2 { "abcde", 5 };
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static_assert (sv1.rfind( "") == 0, "" );
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static_assert (sv1.rfind( "abcde") == SV::npos, "" );
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static_assert (sv2.rfind( "") == 5, "" );
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static_assert (sv2.rfind( "abcde") == 0, "" );
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static_assert (sv2.rfind( "abcde", 1) == 0, "" );
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}
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#endif
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}
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