monero/contrib/epee/include/to_nonconst_iterator.h
2014-07-23 15:03:52 +02:00

54 lines
2.4 KiB
C++

// Copyright (c) 2014, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov
#ifndef _TO_NONCONST_ITERATOR_H_
#define _TO_NONCONST_ITERATOR_H_
namespace epee
{
template<class Type>
typename Type::iterator to_nonsonst_iterator(Type& obj, typename Type::const_iterator it)
{
typename Type::difference_type dist = std::distance(static_cast<typename Type::const_iterator>(obj.begin()), it);
typename Type::iterator res_it = obj.begin()+dist;
return res_it;
}
template<class Type>
typename Type::iterator to_nonsonst_iterator(typename Type::iterator base_it, typename Type::const_iterator it)
{
typename Type::difference_type dist = std::distance(static_cast<typename Type::const_iterator>(base_it), it);
typename Type::iterator res_it = base_it+dist;
return res_it;
}
}//namespace epee
#endif //_TO_NONCONST_ITERATOR_H_