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// Copyright (C) 2020-2024 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-do run { target c++20 } }
// { 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();
}
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