| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <string> |
| |
| // template<class charT, class traits> |
| // constexpr bool operator<=(basic_string_view<charT,traits> lhs, |
| // basic_string_view<charT,traits> rhs); |
| |
| #include <experimental/string_view> |
| #include <cassert> |
| |
| #include "constexpr_char_traits.hpp" |
| |
| template <class S> |
| void |
| test(const S& lhs, const S& rhs, bool x, bool y) |
| { |
| assert((lhs <= rhs) == x); |
| assert((rhs <= lhs) == y); |
| } |
| |
| int main() |
| { |
| { |
| typedef std::experimental::string_view S; |
| test(S(""), S(""), true, true); |
| test(S(""), S("abcde"), true, false); |
| test(S(""), S("abcdefghij"), true, false); |
| test(S(""), S("abcdefghijklmnopqrst"), true, false); |
| test(S("abcde"), S(""), false, true); |
| test(S("abcde"), S("abcde"), true, true); |
| test(S("abcde"), S("abcdefghij"), true, false); |
| test(S("abcde"), S("abcdefghijklmnopqrst"), true, false); |
| test(S("abcdefghij"), S(""), false, true); |
| test(S("abcdefghij"), S("abcde"), false, true); |
| test(S("abcdefghij"), S("abcdefghij"), true, true); |
| test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true, false); |
| test(S("abcdefghijklmnopqrst"), S(""), false, true); |
| test(S("abcdefghijklmnopqrst"), S("abcde"), false, true); |
| test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false, true); |
| test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true, true); |
| } |
| |
| #if _LIBCPP_STD_VER > 11 |
| { |
| typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV; |
| constexpr SV sv1; |
| constexpr SV sv2 { "abcde", 5 }; |
| |
| static_assert ( sv1 <= sv1, "" ); |
| static_assert ( sv2 <= sv2, "" ); |
| |
| static_assert ( sv1 <= sv2, "" ); |
| static_assert (!(sv2 <= sv1), "" ); |
| } |
| #endif |
| } |