b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <ostream>
|
|
|
|
// template <class charT, class traits = char_traits<charT> >
|
|
// class basic_ostream;
|
|
|
|
// template <class charT, class traits, class T>
|
|
// basic_ostream<charT, traits>&
|
|
// operator<<(basic_ostream<charT, traits>&& os, const T& x);
|
|
|
|
#include <ostream>
|
|
#include <cassert>
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class CharT>
|
|
class testbuf
|
|
: public std::basic_streambuf<CharT>
|
|
{
|
|
typedef std::basic_streambuf<CharT> base;
|
|
std::basic_string<CharT> str_;
|
|
public:
|
|
testbuf()
|
|
{
|
|
}
|
|
|
|
std::basic_string<CharT> str() const
|
|
{return std::basic_string<CharT>(base::pbase(), base::pptr());}
|
|
|
|
protected:
|
|
|
|
virtual typename base::int_type
|
|
overflow(typename base::int_type __c = base::traits_type::eof())
|
|
{
|
|
if (__c != base::traits_type::eof())
|
|
{
|
|
int n = str_.size();
|
|
str_.push_back(__c);
|
|
str_.resize(str_.capacity());
|
|
base::setp(const_cast<CharT*>(str_.data()),
|
|
const_cast<CharT*>(str_.data() + str_.size()));
|
|
base::pbump(n+1);
|
|
}
|
|
return __c;
|
|
}
|
|
};
|
|
|
|
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
int main()
|
|
{
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
{
|
|
testbuf<char> sb;
|
|
std::ostream(&sb) << "testing...";
|
|
assert(sb.str() == "testing...");
|
|
}
|
|
{
|
|
testbuf<wchar_t> sb;
|
|
std::wostream(&sb) << L"123";
|
|
assert(sb.str() == L"123");
|
|
}
|
|
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
}
|