| // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // C++20 29.8.4.2 basic_ostringstream constructors [ostringstream.cons] |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do run { target c++2a } } |
| // { dg-require-effective-target cxx11_abi } |
| |
| #include <sstream> |
| #include <string> |
| #include <testsuite_allocator.h> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| std::ostringstream::allocator_type a; |
| std::ostringstream stm(std::ios_base::in, a); |
| } |
| |
| auto const cstr = "This is a test string"; |
| |
| void |
| test02() |
| { |
| std::string s1(cstr); |
| std::ostringstream stm(std::move(s1)); |
| VERIFY( s1.empty() ); |
| |
| std::string s2(cstr); |
| VERIFY( stm.str() == s2 ); |
| } |
| |
| void |
| test03() |
| { |
| using C = char; |
| using alloc_type = __gnu_test::uneq_allocator<C>; |
| using traits_type = std::char_traits<C>; |
| using string = std::basic_string<C, traits_type, alloc_type>; |
| using ostringstream = std::basic_ostringstream<C, traits_type, alloc_type>; |
| |
| auto const mode = std::ios_base::in; |
| alloc_type a1(1); |
| const string s1(cstr, a1); |
| |
| // basic_ostringstream() |
| { |
| alloc_type a0; |
| ostringstream ss; |
| VERIFY( ss.str().empty() ); |
| VERIFY( ss.rdbuf()->get_allocator() == a0 ); |
| VERIFY( ss.str().get_allocator() == a0 ); |
| } |
| |
| // basic_ostringstream(openmode) |
| { |
| alloc_type a0; |
| ostringstream ss(mode); |
| VERIFY( ss.str().empty() ); |
| VERIFY( ss.rdbuf()->get_allocator() == a0 ); |
| VERIFY( ss.str().get_allocator() == a0 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,A>&, openmode = in) |
| { |
| ostringstream ss(s1); |
| VERIFY( ss.str() == cstr ); |
| VERIFY( ss.rdbuf()->get_allocator() == a1 ); |
| VERIFY( ss.str().get_allocator() == a1 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,A>&, openmode = in) |
| { |
| ostringstream ss(s1, mode); |
| VERIFY( ss.str() == cstr ); |
| VERIFY( ss.rdbuf()->get_allocator() == a1 ); |
| VERIFY( ss.str().get_allocator() == a1 ); |
| } |
| |
| // basic_ostringstream(openmode, const A&) |
| { |
| ostringstream ss(mode, a1); |
| VERIFY( ss.str().empty() ); |
| VERIFY( ss.rdbuf()->get_allocator() == a1 ); |
| VERIFY( ss.str().get_allocator() == a1 ); |
| } |
| |
| // basic_ostringstream(basic_string<C,T,A>&&, openmode = in) |
| { |
| ostringstream ss(string{s1}); |
| VERIFY( ss.str() == s1 ); |
| VERIFY( ss.rdbuf()->get_allocator() == a1 ); |
| VERIFY( ss.str().get_allocator() == a1 ); |
| } |
| |
| // basic_ostringstream(basic_string<C,T,A>&&, openmode = in) |
| { |
| ostringstream ss(string(s1), mode); |
| VERIFY( ss.str() == s1 ); |
| VERIFY( ss.rdbuf()->get_allocator() == a1 ); |
| VERIFY( ss.str().get_allocator() == a1 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,SA>&, const A&) |
| { |
| alloc_type a2(2); |
| ostringstream ss(s1, a2); |
| VERIFY( ss.str() == s1 ); |
| VERIFY( ss.rdbuf()->get_allocator() == a2 ); |
| VERIFY( ss.str().get_allocator() == a2 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,SA>&, const A&) |
| { |
| alloc_type a2(2); |
| const std::string s2 = cstr; |
| ostringstream ss(s2, a2); |
| VERIFY( ss.str() == cstr ); |
| VERIFY( ss.rdbuf()->get_allocator() == a2 ); |
| VERIFY( ss.str().get_allocator() == a2 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,SA>&, openmode, const A&) |
| { |
| alloc_type a2(2); |
| ostringstream ss(s1, mode, a2); |
| VERIFY( ss.str() == s1 ); |
| VERIFY( ss.rdbuf()->get_allocator() == a2 ); |
| VERIFY( ss.str().get_allocator() == a2 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,SA>&, openmode, const A&) |
| { |
| alloc_type a2(2); |
| const std::string s2 = cstr; |
| ostringstream ss(s2, mode, a2); |
| VERIFY( ss.str() == cstr ); |
| VERIFY( ss.rdbuf()->get_allocator() == a2 ); |
| VERIFY( ss.str().get_allocator() == a2 ); |
| } |
| |
| // basic_ostringstream(const basic_string<C,T,SA>&, openmode = in) |
| { |
| alloc_type a0; |
| const std::string s2 = cstr; |
| ostringstream ss(s2, mode); |
| VERIFY( ss.str() == cstr ); |
| VERIFY( ss.rdbuf()->get_allocator() == a0 ); |
| VERIFY( ss.str().get_allocator() == a0 ); |
| } |
| } |
| |
| // A minimal allocator with no default constructor |
| template<typename T> |
| struct NoDefaultCons : __gnu_test::SimpleAllocator<T> |
| { |
| using __gnu_test::SimpleAllocator<T>::SimpleAllocator; |
| |
| NoDefaultCons() = delete; |
| |
| NoDefaultCons(int) { } |
| }; |
| |
| void |
| test04() |
| { |
| using sstream = std::basic_ostringstream<char, std::char_traits<char>, |
| NoDefaultCons<char>>; |
| |
| NoDefaultCons<char> a(1); |
| const std::string str(cstr); |
| |
| sstream ss1(str, a); |
| VERIFY( ss1.str() == cstr ); |
| |
| sstream ss2(str, std::ios::in, a); |
| VERIFY( ss2.str() == cstr ); |
| VERIFY( bool(ss2 << "That") ); |
| VERIFY( ss2.str() == "That is a test string" ); |
| |
| sstream ss3(std::string(str), std::ios::ate, a); |
| VERIFY( ss3.str() == cstr ); |
| VERIFY( bool(ss3 << "y thing") ); |
| VERIFY( ss3.str() == "This is a test stringy thing" ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| test04(); |
| } |