| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <string> |
| |
| // template<class charT, class traits, class Allocator> |
| // basic_istream<charT,traits>& |
| // operator>>(basic_istream<charT,traits>& is, |
| // basic_string<charT,traits,Allocator>& str); |
| |
| #include <string> |
| #include <sstream> |
| #include <cassert> |
| |
| #include "min_allocator.h" |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| { |
| std::istringstream in("a bc defghij"); |
| std::string s("initial text"); |
| in >> s; |
| assert(in.good()); |
| assert(s == "a"); |
| assert(in.peek() == ' '); |
| in >> s; |
| assert(in.good()); |
| assert(s == "bc"); |
| assert(in.peek() == ' '); |
| in.width(3); |
| in >> s; |
| assert(in.good()); |
| assert(s == "def"); |
| assert(in.peek() == 'g'); |
| in >> s; |
| assert(in.eof()); |
| assert(s == "ghij"); |
| in >> s; |
| assert(in.fail()); |
| } |
| { |
| std::wistringstream in(L"a bc defghij"); |
| std::wstring s(L"initial text"); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"a"); |
| assert(in.peek() == L' '); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"bc"); |
| assert(in.peek() == L' '); |
| in.width(3); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"def"); |
| assert(in.peek() == L'g'); |
| in >> s; |
| assert(in.eof()); |
| assert(s == L"ghij"); |
| in >> s; |
| assert(in.fail()); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| std::stringbuf sb; |
| std::istream is(&sb); |
| is.exceptions(std::ios::failbit); |
| |
| bool threw = false; |
| try { |
| std::string s; |
| is >> s; |
| } 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::string s; |
| is >> s; |
| } catch (std::ios::failure const&) { |
| threw = true; |
| } |
| |
| assert(!is.bad()); |
| assert(is.fail()); |
| assert(is.eof()); |
| assert(threw); |
| } |
| #endif // TEST_HAS_NO_EXCEPTIONS |
| #if TEST_STD_VER >= 11 |
| { |
| typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; |
| std::istringstream in("a bc defghij"); |
| S s("initial text"); |
| in >> s; |
| assert(in.good()); |
| assert(s == "a"); |
| assert(in.peek() == ' '); |
| in >> s; |
| assert(in.good()); |
| assert(s == "bc"); |
| assert(in.peek() == ' '); |
| in.width(3); |
| in >> s; |
| assert(in.good()); |
| assert(s == "def"); |
| assert(in.peek() == 'g'); |
| in >> s; |
| assert(in.eof()); |
| assert(s == "ghij"); |
| in >> s; |
| assert(in.fail()); |
| } |
| { |
| typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S; |
| std::wistringstream in(L"a bc defghij"); |
| S s(L"initial text"); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"a"); |
| assert(in.peek() == L' '); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"bc"); |
| assert(in.peek() == L' '); |
| in.width(3); |
| in >> s; |
| assert(in.good()); |
| assert(s == L"def"); |
| assert(in.peek() == L'g'); |
| in >> s; |
| assert(in.eof()); |
| assert(s == L"ghij"); |
| in >> s; |
| assert(in.fail()); |
| } |
| #endif |
| |
| return 0; |
| } |