| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // test: |
| |
| // template <class charT, class traits, size_t N> |
| // basic_istream<charT, traits>& |
| // operator>>(basic_istream<charT, traits>& is, bitset<N>& x); |
| |
| #include <bitset> |
| #include <sstream> |
| #include <cassert> |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| std::istringstream in("01011010"); |
| std::bitset<8> b; |
| in >> b; |
| assert(b.to_ulong() == 0x5A); |
| } |
| { |
| // Make sure that input-streaming an empty bitset does not cause the |
| // failbit to be set (LWG 3199). |
| std::istringstream in("01011010"); |
| std::bitset<0> b; |
| in >> b; |
| assert(b.to_string() == ""); |
| assert(!in.bad()); |
| assert(!in.fail()); |
| assert(!in.eof()); |
| assert(in.good()); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| std::stringbuf sb; |
| std::istream is(&sb); |
| is.exceptions(std::ios::failbit); |
| |
| bool threw = false; |
| try { |
| std::bitset<8> b; |
| is >> b; |
| } catch (std::ios::failure const&) { |
| threw = true; |
| } |
| |
| assert(!is.bad()); |
| assert(is.fail()); |
| assert(is.eof()); |
| assert(threw); |
| } |
| { |
| std::stringbuf sb; |
| std::istream is(&sb); |
| is.exceptions(std::ios::eofbit); |
| |
| bool threw = false; |
| try { |
| std::bitset<8> b; |
| is >> b; |
| } catch (std::ios::failure const&) { |
| threw = true; |
| } |
| |
| assert(!is.bad()); |
| assert(is.fail()); |
| assert(is.eof()); |
| assert(threw); |
| } |
| #endif // TEST_HAS_NO_EXCEPTIONS |
| |
| return 0; |
| } |