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179 lines
4.0 KiB
C++
179 lines
4.0 KiB
C++
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// 1999-09-20 bkoz
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// Copyright (C) 1999 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// 27.4.3 template class fpos
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#include <ios>
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#ifdef DEBUG_ASSERT
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#include <assert.h>
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#endif
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void test01()
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{
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bool test = true;
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typedef mbstate_t state_type;
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state_type state01;
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state_type state02;
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std::streampos pos01;
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std::streampos pos02;
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std::streamoff off01;
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std::streamoff off02;
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std::streamsize size01;
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std::streamsize size02;
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// 27.4.3.1 fpos members
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// void state(state_type s);
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// state_type state();
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#if 0
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// XXX Need to have some sanity checking for the mbstate_t type, or
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// whatever the insantiating type for class fpos happens to be for
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// streampos, as things like equality operators and assignment
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// operators, increment and deincrement operators need to be in place.
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pos01.state(state02);
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state01 = pos01.state();
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test &= state01 == state02;
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#endif
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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// 27.4.3.2 fpos requirements/invariants
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void test02()
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{
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bool test = true;
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typedef mbstate_t state_type;
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state_type state01;
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state_type state02;
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std::streamoff off01;
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std::streamoff off02 = 997;
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int i01 = 0;
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int i02 = 999;
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// p(i), p = i
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std::streampos pos01(i02);
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std::streampos pos02 = i02;
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test &= pos01 == pos02;
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// p(o), p = o
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// NB: P(o) is only required.
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std::streampos pos03(off02);
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std::streampos pos04 = off02;
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test &= pos03 == pos04;
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// O(p)
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std::streamoff off03(pos04);
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test &= off03 == off02;
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// p == q, p!= q
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test &= pos01 == pos02;
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test &= pos02 != pos03;
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// q = p + o
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// p += o
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pos03 = pos03 + off02;
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pos04 += off02;
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test &= pos03 == pos04;
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// q = p - o
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// p -= o
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pos03 = pos03 - off02;
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pos04 -= off02;
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test &= pos03 == pos04;
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// o = p - q
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test &= 0 == pos03 - pos04;
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// streamsize -> streamoff
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// streamoff -> streamsize
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off01 = off02;
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std::streamsize size01(off02);
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std::streamoff off04(size01);
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test &= off01 == off04;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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void test03()
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{
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bool test = true;
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typedef mbstate_t state_type;
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state_type state01;
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state_type state02;
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std::streamoff off01;
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std::streamoff off02 = 997;
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int i01 = 0;
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int i02 = 999;
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// casts to const streamoff
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// (yes, I know this is weak code)
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const std::streampos pos01 = 0;
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off01 = pos01;
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// equality/inequality with const args
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const std::streampos pos02(54);
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std::streampos pos03(44);
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test &= !(pos03 == pos02);
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test &= pos03 != pos02;
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test &= !(pos02 == pos03);
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test &= pos02 != pos03;
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// default values
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std::streampos pos04;
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test &= (std::streamoff)pos04 == 0;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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int main() {
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test01();
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test02();
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test03();
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return 0;
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}
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