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// 1999-09-20 bkoz
// Copyright (C) 1999, 2001 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 2, 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 COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// 27.4.3 template class fpos
#include <cwchar> // for mbstate_t
#include <ios>
#include <debug_assert.h>
void test01()
{
bool test = true;
typedef std::mbstate_t state_type;
state_type state01;
state_type state02;
std::streampos pos01;
std::streampos pos02;
std::streamoff off01;
std::streamoff off02;
std::streamsize size01;
std::streamsize size02;
// 27.4.3.1 fpos members
// void state(state_type s);
// state_type state();
#if 0
// XXX Need to have some sanity checking for the mbstate_t type, or
// whatever the insantiating type for class fpos happens to be for
// streampos, as things like equality operators and assignment
// operators, increment and deincrement operators need to be in place.
pos01.state(state02);
state01 = pos01.state();
VERIFY( state01 == state02 );
#endif
#ifdef DEBUG_ASSERT
assert(test);
#endif
}
// 27.4.3.2 fpos requirements/invariants
void test02()
{
bool test = true;
typedef std::mbstate_t state_type;
state_type state01;
state_type state02;
std::streamoff off01;
std::streamoff off02 = 997;
int i01 = 0;
int i02 = 999;
// p(i), p = i
std::streampos pos01(i02);
std::streampos pos02 = i02;
VERIFY( pos01 == pos02 );
// p(o), p = o
// NB: P(o) is only required.
std::streampos pos03(off02);
std::streampos pos04 = off02;
VERIFY( pos03 == pos04 );
// O(p)
std::streamoff off03(pos04);
VERIFY( off03 == off02 );
// p == q, p!= q
VERIFY( pos01 == pos02 );
VERIFY( pos02 != pos03 );
// q = p + o
// p += o
pos03 = pos03 + off02;
pos04 += off02;
VERIFY( pos03 == pos04 );
// q = p - o
// p -= o
pos03 = pos03 - off02;
pos04 -= off02;
VERIFY( pos03 == pos04 );
// o = p - q
VERIFY( 0 == pos03 - pos04 );
// streamsize -> streamoff
// streamoff -> streamsize
off01 = off02;
std::streamsize size01(off02);
std::streamoff off04(size01);
VERIFY( off01 == off04 );
#ifdef DEBUG_ASSERT
assert(test);
#endif
}
void test03()
{
bool test = true;
typedef std::mbstate_t state_type;
state_type state01;
state_type state02;
std::streamoff off01;
std::streamoff off02 = 997;
int i01 = 0;
int i02 = 999;
// casts to const streamoff
// (yes, I know this is weak code)
const std::streampos pos01 = 0;
off01 = pos01;
// equality/inequality with const args
const std::streampos pos02(54);
std::streampos pos03(44);
VERIFY( !(pos03 == pos02) );
VERIFY( pos03 != pos02 );
VERIFY( !(pos02 == pos03) );
VERIFY( pos02 != pos03 );
// default values
std::streampos pos04;
VERIFY( (std::streamoff)pos04 == 0 );
#ifdef DEBUG_ASSERT
assert(test);
#endif
}
int main() {
test01();
test02();
test03();
return 0;
}
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