/usr/include/wibble/empty.h is in libwibble-dev 1.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | // -*- C++ -*-
#ifndef WIBBLE_EMPTY_H
#define WIBBLE_EMPTY_H
/*
* Degenerated container to hold a single value
*
* Copyright (C) 2006 Enrico Zini <enrico@debian.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <cstddef>
#include <iterator>
namespace wibble {
template<typename T>
class Empty
{
public:
typedef T value_type;
class const_iterator : public std::iterator<std::forward_iterator_tag, const T, void, const T*, const T&>
{
public:
const T& operator*() const { return *reinterpret_cast< T* >( 0 ); }
const T* operator->() const { return 0; }
const_iterator& operator++() { return *this; }
bool operator==(const const_iterator&) const { return true; }
bool operator!=(const const_iterator&) const { return false; }
};
class iterator : public std::iterator<std::forward_iterator_tag, T, void, T*, T&>
{
public:
T& operator*() const { return *reinterpret_cast< T* >( 0 ); }
T* operator->() const { return 0; }
iterator& operator++() { return *this; }
bool operator==(const iterator&) const { return true; }
bool operator!=(const iterator&) const { return false; }
};
bool empty() const { return true; }
size_t size() const { return 0; }
iterator begin() { return iterator(); }
iterator end() { return iterator(); }
const_iterator begin() const { return const_iterator(); }
const_iterator end() const { return const_iterator(); }
};
}
// vim:set ts=4 sw=4:
#endif
|