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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <sstream>
// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
// class basic_stringstream
// explicit basic_stringstream(const basic_string<charT,traits,Allocator>& str,
// ios_base::openmode which = ios_base::out|ios_base::in);
#include <sstream>
#include <cassert>
#include "test_macros.h"
template<typename T>
struct NoDefaultAllocator : std::allocator<T>
{
template<typename U> struct rebind { using other = NoDefaultAllocator<U>; };
NoDefaultAllocator(int id_) : id(id_) { }
template<typename U> NoDefaultAllocator(const NoDefaultAllocator<U>& a) : id(a.id) { }
int id;
};
int main(int, char**)
{
{
std::stringstream ss(" 123 456 ");
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == " 123 456 ");
int i = 0;
ss >> i;
assert(i == 123);
ss >> i;
assert(i == 456);
ss << i << ' ' << 123;
assert(ss.str() == "456 1236 ");
}
{
std::wstringstream ss(L" 123 456 ");
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == L" 123 456 ");
int i = 0;
ss >> i;
assert(i == 123);
ss >> i;
assert(i == 456);
ss << i << ' ' << 123;
assert(ss.str() == L"456 1236 ");
}
{ // This is https://llvm.org/PR33727
typedef std::basic_string <char, std::char_traits<char>, NoDefaultAllocator<char> > S;
typedef std::basic_stringbuf<char, std::char_traits<char>, NoDefaultAllocator<char> > SB;
S s(NoDefaultAllocator<char>(1));
SB sb(s);
// This test is not required by the standard, but *where else* could it get the allocator?
assert(sb.str().get_allocator() == s.get_allocator());
}
return 0;
}
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