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Diffstat (limited to 'include/std/util/impl/iterator.h')
| -rw-r--r-- | include/std/util/impl/iterator.h | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/include/std/util/impl/iterator.h b/include/std/util/impl/iterator.h deleted file mode 100644 index fdb03145..00000000 --- a/include/std/util/impl/iterator.h +++ /dev/null @@ -1,149 +0,0 @@ -/* IBM_PROLOG_BEGIN_TAG */ -/* This is an automatically generated prolog. */ -/* */ -/* $Source: src/include/util/impl/iterator.h $ */ -/* */ -/* OpenPOWER HostBoot Project */ -/* */ -/* Contributors Listed Below - COPYRIGHT 2012,2015 */ -/* [+] International Business Machines Corp. */ -/* */ -/* */ -/* Licensed under the Apache License, Version 2.0 (the "License"); */ -/* you may not use this file except in compliance with the License. */ -/* You may obtain a copy of the License at */ -/* */ -/* http://www.apache.org/licenses/LICENSE-2.0 */ -/* */ -/* Unless required by applicable law or agreed to in writing, software */ -/* distributed under the License is distributed on an "AS IS" BASIS, */ -/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ -/* implied. See the License for the specific language governing */ -/* permissions and limitations under the License. */ -/* */ -/* IBM_PROLOG_END_TAG */ - -#ifndef __UTIL_IMPL_ITERATOR_H -#define __UTIL_IMPL_ITERATOR_H - -/** @file iterator.h - * - * Contains the internal implementation details of the stl <iterator> header. - */ - -#include <util/traits/has_plusequals.H> -#include <util/traits/has_minus.H> - -namespace Util -{ - namespace __Util_Iterator_Impl - { - - /** - * Template definition of an iterator advance functor. - */ - template <typename InputIterator, typename Distance, - bool HasPlusEquals> struct AdvanceImpl; - - /** - * Template specialization of the advance functor for iterators - * which do not support random access. - */ - template <typename InputIterator, typename Distance> - struct AdvanceImpl<InputIterator, Distance, false> - { - static void advance(InputIterator& i, Distance n) - { - while(n--) - ++i; - } - }; - - /** - * Template specialization of the advance functor for iterators - * which do support random access. - */ - template <typename RandomIterator, typename Distance> - struct AdvanceImpl<RandomIterator, Distance, true> - { - static void advance(RandomIterator& i, Distance n) - { - i += n; - } - }; - - /** - * Template wrapper function for the iterator advance. - * - * Uses the existence of a += operator on the iterator to determine - * if the random-access or non-random-access version should be used. - */ - template <typename InputIterator, typename Distance> - void advance(InputIterator& i, Distance n) - { - AdvanceImpl<InputIterator, Distance, - Util::Traits::has_plusequals<InputIterator,Distance, - InputIterator>::value - >::advance(i,n); - } - - /** - * Template definition of an iterator distance functor. - */ - template <typename InputIterator, typename Distance, - bool HasMinus> struct DistanceImpl; - - /** - * Template specialization of the distance functor for iterators - * which do not support random access. - */ - template <typename InputIterator, typename Distance> - struct DistanceImpl<InputIterator, Distance, false> - { - static Distance distance(InputIterator& first, - InputIterator& last) - { - Distance i = 0; - while (first != last) - { - ++i; - ++first; - } - return i; - } - }; - - /** - * Template specialization of the distance functor for iterators - * which do support random access. - */ - template <typename RandomIterator, typename Distance> - struct DistanceImpl<RandomIterator, Distance, true> - { - static Distance distance(RandomIterator& first, - RandomIterator& last) - { - return last - first; - } - }; - - /** - * Template wrapper function for the iterator distance. - * - * Uses the existence of a - operator on the iterator to determine - * if the random-access or non-random-access version should be used. - */ - template <typename InputIterator, typename Distance> - Distance distance(InputIterator& first, - InputIterator& last) - { - return DistanceImpl<InputIterator, Distance, - Util::Traits::has_minus<InputIterator, InputIterator, - Distance>::value - >::distance(first,last); - } - - }; -}; - -#endif |
