range.h

/*
    SPDX-FileCopyrightText: 2012 Ivan Cukic <ivan.cukic(at)kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
*/
 
#ifndef UTILS_RANGE_H
#define UTILS_RANGE_H
 
#include <boost/range/adaptor/filtered.hpp>
#include <boost/range/adaptor/transformed.hpp>
#include <boost/range/algorithm/copy.hpp>
 
/********************************************************************
 *  Syntactic sugar for converting ranges to collections            *
 ********************************************************************/
 
namespace kamd
{
namespace utils
{
template<typename Collection, typename Range>
__inline Collection as_collection(Range range)
{
    Collection result;
 
    boost::copy(range, std::back_inserter(result));
 
    return result;
}
 
template<typename Member, typename... Args>
__inline auto transformed(Member member, Args... args) -> decltype(boost::adaptors::transformed(std::bind(member, args..., std::placeholders::_1)))
{
    return boost::adaptors::transformed(std::bind(member, args..., std::placeholders::_1));
}
 
template<typename Member, typename... Args>
__inline auto filtered(Member member, Args... args) -> decltype(boost::adaptors::filtered(std::bind(member, args..., std::placeholders::_1)))
{
    return boost::adaptors::filtered(std::bind(member, args..., std::placeholders::_1));
}
 
template<typename Class, typename Member>
__inline auto filtered(Class *const self, Member member) -> decltype(boost::adaptors::filtered(std::bind(member, self, std::placeholders::_1)))
{
    return boost::adaptors::filtered(std::bind(member, self, std::placeholders::_1));
}
 
} // namespace utils
} // namespace kamd
 
#endif // UTILS_RANGE_H