| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | // <locale> |
| 10 | |
| 11 | // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT |
| 12 | |
| 13 | // wbuffer_convert<Codecvt, Elem, Tr> |
| 14 | |
| 15 | // int_type pbackfail(int_type c = traits::eof()); |
| 16 | |
| 17 | // This test is not entirely portable |
| 18 | |
| 19 | // XFAIL: no-wide-characters |
| 20 | |
| 21 | #include <locale> |
| 22 | #include <cassert> |
| 23 | #include <codecvt> |
| 24 | #include <sstream> |
| 25 | |
| 26 | struct test_buf |
| 27 | : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> > |
| 28 | { |
| 29 | typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base; |
| 30 | typedef base::char_type char_type; |
| 31 | typedef base::int_type int_type; |
| 32 | typedef base::traits_type traits_type; |
| 33 | |
| 34 | explicit test_buf(std::streambuf* sb) : base(sb) {} |
| 35 | |
| 36 | char_type* eback() const {return base::eback();} |
| 37 | char_type* gptr() const {return base::gptr();} |
| 38 | char_type* egptr() const {return base::egptr();} |
| 39 | void gbump(int n) {base::gbump(n: n);} |
| 40 | |
| 41 | virtual int_type pbackfail(int_type c = traits_type::eof()) {return base::pbackfail(c: c);} |
| 42 | }; |
| 43 | |
| 44 | int main(int, char**) |
| 45 | { |
| 46 | std::string const s = "123456789"; |
| 47 | { |
| 48 | std::istringstream in(s); |
| 49 | test_buf f(in.rdbuf()); |
| 50 | assert(f.sbumpc() == L'1'); |
| 51 | assert(f.sgetc() == L'2'); |
| 52 | assert(f.pbackfail(L'a') == test_buf::traits_type::eof()); |
| 53 | } |
| 54 | { |
| 55 | std::istringstream in(s); |
| 56 | test_buf f(in.rdbuf()); |
| 57 | assert(f.sbumpc() == L'1'); |
| 58 | assert(f.sgetc() == L'2'); |
| 59 | assert(f.pbackfail(L'a') == test_buf::traits_type::eof()); |
| 60 | assert(f.sbumpc() == L'2'); |
| 61 | assert(f.sgetc() == L'3'); |
| 62 | } |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 |