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// Copyright (C) 2004-2015 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/>.
// 27.6.1.2.3 basic_istream::operator>>
#include <istream>
#include <sstream>
#include <testsuite_hooks.h>
// stringbufs.
void test01()
{
typedef std::wios::traits_type ctraits_type;
bool test __attribute__((unused)) = true;
const std::wstring str_01;
const std::wstring str_02(L"art taylor kickin it on DAKAR");
std::wstring strtmp;
std::wstringbuf isbuf_00(std::ios_base::in);
std::wstringbuf isbuf_01(std::ios_base::in | std::ios_base::out);
std::wstringbuf isbuf_02(str_01, std::ios_base::in);
std::wstringbuf isbuf_03(str_01, std::ios_base::in | std::ios_base::out);
std::wstringbuf isbuf_04(str_02, std::ios_base::in);
std::wstringbuf isbuf_05(str_02, std::ios_base::in | std::ios_base::out);
std::wistream is_00(0);
std::wistream is_01(&isbuf_01);
std::wistream is_02(&isbuf_02);
std::wistream is_03(&isbuf_03);
std::wistream is_04(&isbuf_04);
std::wistream is_05(&isbuf_05);
std::ios_base::iostate state1, state2, statefail, stateeof;
statefail = std::ios_base::failbit;
stateeof = std::ios_base::eofbit;
// template<_CharT, _Traits>
// basic_istream& operator>>(basic_streambuf*)
// null istream to empty in_buf
state1 = is_00.rdstate();
is_00 >> &isbuf_00;
state2 = is_00.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_00.str() == str_01 );
// null istream to empty in_out_buf
is_00.clear(std::ios_base::goodbit);
state1 = is_00.rdstate();
is_00 >> &isbuf_01;
state2 = is_00.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_01.str() == str_01 );
// null istream to full in_buf
is_00.clear(std::ios_base::goodbit);
state1 = is_00.rdstate();
is_00 >> &isbuf_04;
state2 = is_00.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_04.str() == str_02 );
// null istream to full in_out_buf
is_00.clear(std::ios_base::goodbit);
state1 = is_00.rdstate();
is_00 >> &isbuf_05;
state2 = is_00.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_05.str() == str_02 );
// empty but non-null istream to full in_buf
state1 = is_02.rdstate();
is_02 >> &isbuf_04;
state2 = is_02.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_04.str() == str_02 ); // as only an "in" buffer
VERIFY( isbuf_04.sgetc() == L'a' );
// empty but non-null istream to full in_out_buf
is_02.clear(std::ios_base::goodbit);
state1 = is_02.rdstate();
is_02 >> &isbuf_05;
state2 = is_02.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_05.str() == str_02 ); // as only an "in" buffer
VERIFY( isbuf_05.sgetc() == L'a' );
// full istream to empty in_buf (need out_buf, you know?)
state1 = is_04.rdstate();
is_04 >> &isbuf_02;
state2 = is_04.rdstate();
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
VERIFY( isbuf_02.str() == str_01 ); // as only an "in" buffer
VERIFY( isbuf_02.sgetc() == ctraits_type::eof() );
VERIFY( is_04.peek() == ctraits_type::eof() ); // as failed
// full istream to empty in_out_buf
is_04.clear(std::ios_base::goodbit);
state1 = is_04.rdstate();
is_04 >> &isbuf_03;
state2 = is_04.rdstate();
VERIFY( state1 != state2 );
VERIFY( !static_cast<bool>(state2 & statefail) );
VERIFY( state2 == stateeof );
strtmp = isbuf_03.str();
VERIFY( strtmp == str_02 ); // as only an "in" buffer
VERIFY( isbuf_03.sgetc() == L'a' );
VERIFY( is_04.peek() == ctraits_type::eof() );
}
int main()
{
test01();
return 0;
}
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