src/utils/range.h

0001 /*
0002  *   SPDX-FileCopyrightText: 2012-2016 Ivan Cukic <ivan.cukic@kde.org>
0003  *
0004  *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0005  */
0006
0007 #ifndef UTILS_RANGE_H
0008 #define UTILS_RANGE_H
0009
0010 #include <boost/range/adaptor/filtered.hpp>
0011 #include <boost/range/adaptor/transformed.hpp>
0012 #include <boost/range/algorithm/copy.hpp>
0013
0014 /********************************************************************
0015  *  Syntactic sugar for converting ranges to collections            *
0016  ********************************************************************/
0017
0018 namespace kamd
0019 {
0020 namespace utils
0021 {
0022 template<typename Collection, typename Range>
0023 __inline Collection as_collection(Range range)
0024 {
0025     Collection result;
0026
0027     boost::copy(range, std::back_inserter(result));
0028
0029     return result;
0030 }
0031
0032 template<typename Member, typename... Args>
0033 __inline auto transformed(Member member, Args... args) -> decltype(boost::adaptors::transformed(std::bind(member, args..., std::placeholders::_1)))
0034 {
0035     return boost::adaptors::transformed(std::bind(member, args..., std::placeholders::_1));
0036 }
0037
0038 template<typename Member, typename... Args>
0039 __inline auto filtered(Member member, Args... args) -> decltype(boost::adaptors::filtered(std::bind(member, args..., std::placeholders::_1)))
0040 {
0041     return boost::adaptors::filtered(std::bind(member, args..., std::placeholders::_1));
0042 }
0043
0044 template<typename Class, typename Member>
0045 __inline auto filtered(Class *const self, Member member) -> decltype(boost::adaptors::filtered(std::bind(member, self, std::placeholders::_1)))
0046 {
0047     return boost::adaptors::filtered(std::bind(member, self, std::placeholders::_1));
0048 }
0049
0050 } // namespace utils
0051 } // namespace kamd
0052
0053 #endif // UTILS_RANGE_H