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// Copyright (C) 2004-2019 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 character extractors
#include <istream>
#include <sstream>
#include <testsuite_hooks.h>
void test01()
{
std::wstring str_01;
const std::wstring str_02(L"coltrane playing 'softly as a morning sunrise'");
const std::wstring str_03(L"coltrane");
std::wstringbuf isbuf_01(std::ios_base::in);
std::wstringbuf isbuf_02(str_02, std::ios_base::in);
std::wistream is_01(0);
std::wistream is_02(&isbuf_02);
std::ios_base::iostate state1, state2, statefail;
statefail = std::ios_base::failbit;
// template<_CharT, _Traits>
// basic_istream& operator>>(istream&, _CharT*)
const int n = 20;
wchar_t array1[n];
array1[0] = L'\0';
typedef std::wios::traits_type ctraits_type;
ctraits_type::int_type i1, i2;
state1 = is_01.rdstate();
i1 = ctraits_type::length(array1);
is_01 >> array1; // should snake 0 characters, not alter stream state
i2 = ctraits_type::length(array1);
state2 = is_01.rdstate();
VERIFY( i1 == i2 );
VERIFY( state1 != state2 );
VERIFY( static_cast<bool>(state2 & statefail) );
state1 = is_02.rdstate();
is_02 >> array1; // should snake L"coltrane"
state2 = is_02.rdstate();
VERIFY( state1 == state2 );
VERIFY( !static_cast<bool>(state2 & statefail) );
VERIFY( array1[str_03.size() - 1] == L'e' );
array1[str_03.size()] = L'\0';
VERIFY( !str_03.compare(0, str_03.size(), array1) );
std::wistream::int_type int1 = is_02.peek(); // should be L' '
VERIFY( int1 == L' ' );
state1 = is_02.rdstate();
is_02 >> array1; // should snake L"playing" as sentry "eats" ws
state2 = is_02.rdstate();
int1 = is_02.peek(); // should be L' '
VERIFY( int1 == L' ' );
VERIFY( state1 == state2 );
VERIFY( !static_cast<bool>(state2 & statefail) );
}
int main()
{
test01();
return 0;
}
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