| 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 | // UNSUPPORTED: no-localization |
| 10 | |
| 11 | // test: |
| 12 | |
| 13 | // template <class charT, class traits, size_t N> |
| 14 | // basic_istream<charT, traits>& |
| 15 | // operator>>(basic_istream<charT, traits>& is, bitset<N>& x); |
| 16 | |
| 17 | #include <bitset> |
| 18 | #include <sstream> |
| 19 | #include <cassert> |
| 20 | #include "test_macros.h" |
| 21 | |
| 22 | int main(int, char**) |
| 23 | { |
| 24 | { |
| 25 | std::istringstream in("01011010"); |
| 26 | std::bitset<8> b; |
| 27 | in >> b; |
| 28 | assert(b.to_ulong() == 0x5A); |
| 29 | } |
| 30 | { |
| 31 | // Make sure that input-streaming an empty bitset does not cause the |
| 32 | // failbit to be set (LWG 3199). |
| 33 | std::istringstream in("01011010"); |
| 34 | std::bitset<0> b; |
| 35 | in >> b; |
| 36 | assert(b.to_string() == ""); |
| 37 | assert(!in.bad()); |
| 38 | assert(!in.fail()); |
| 39 | assert(!in.eof()); |
| 40 | assert(in.good()); |
| 41 | } |
| 42 | #ifndef TEST_HAS_NO_EXCEPTIONS |
| 43 | { |
| 44 | std::stringbuf sb; |
| 45 | std::istream is(&sb); |
| 46 | is.exceptions(except: std::ios::failbit); |
| 47 | |
| 48 | bool threw = false; |
| 49 | try { |
| 50 | std::bitset<8> b; |
| 51 | is >> b; |
| 52 | } catch (std::ios::failure const&) { |
| 53 | threw = true; |
| 54 | } |
| 55 | |
| 56 | assert(!is.bad()); |
| 57 | assert(is.fail()); |
| 58 | assert(is.eof()); |
| 59 | assert(threw); |
| 60 | } |
| 61 | { |
| 62 | std::stringbuf sb; |
| 63 | std::istream is(&sb); |
| 64 | is.exceptions(except: std::ios::eofbit); |
| 65 | |
| 66 | bool threw = false; |
| 67 | try { |
| 68 | std::bitset<8> b; |
| 69 | is >> b; |
| 70 | } catch (std::ios::failure const&) { |
| 71 | threw = true; |
| 72 | } |
| 73 | |
| 74 | assert(!is.bad()); |
| 75 | assert(is.fail()); |
| 76 | assert(is.eof()); |
| 77 | assert(threw); |
| 78 | } |
| 79 | #endif // TEST_HAS_NO_EXCEPTIONS |
| 80 | |
| 81 | return 0; |
| 82 | } |
| 83 |