/* * Copyright (c) 2018 Jaroslav Jindrak * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * - 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. * - The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #ifndef LIBCPP_BITS_ITERATOR_HELPERS #define LIBCPP_BITS_ITERATOR_HELPERS #include <__bits/aux.hpp> namespace std::aux { /** * Used for our custom iterators where we know * that their references/const_references and * pointers/const_pointers differ only in constness. */ template<class T> struct get_non_const_ref : type_is<T> { /* DUMMY BODY */ }; template<class T> struct get_non_const_ref<const T&> : type_is<T&> { /* DUMMY BODY */ }; template<class T> using get_non_const_ref_t = typename get_non_const_ref<T>::type; template<class T> struct get_non_const_ptr : type_is<T> { /* DUMMY BODY */ }; template<class T> struct get_non_const_ptr<const T*> : type_is<T*> { /* DUMMY BODY */ }; template<class T> using get_non_const_ptr_t = typename get_non_const_ptr<T>::type; } #endif