137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// Debugging support implementation -*- C++ -*- 237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// Free Software Foundation, Inc. 537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// 637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// This file is part of the GNU ISO C++ Library. This library is free 737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// software; you can redistribute it and/or modify it under the 837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// terms of the GNU General Public License as published by the 937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// Free Software Foundation; either version 3, or (at your option) 1037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// any later version. 1137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 1237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// This library is distributed in the hope that it will be useful, 1337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// but WITHOUT ANY WARRANTY; without even the implied warranty of 1437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// GNU General Public License for more details. 1637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 1737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// Under Section 7 of GPL version 3, you are granted additional 1837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// permissions described in the GCC Runtime Library Exception, version 1937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// 3.1, as published by the Free Software Foundation. 2037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 2137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// You should have received a copy of the GNU General Public License and 2237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// a copy of the GCC Runtime Library Exception along with this program; 2337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 2437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh// <http://www.gnu.org/licenses/>. 2537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 2637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh/** @file debug/functions.h 2737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * This file is a GNU debug extension to the Standard C++ Library. 2837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 2937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 3037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#ifndef _GLIBCXX_DEBUG_FUNCTIONS_H 3137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#define _GLIBCXX_DEBUG_FUNCTIONS_H 1 3237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 3337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#include <bits/c++config.h> 3437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#include <bits/stl_iterator_base_types.h> // for iterator_traits, categories 3537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#include <bits/cpp_type_traits.h> // for __is_integer 3637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#include <debug/formatter.h> 3737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 3837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsiehnamespace __gnu_debug 3937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh{ 4037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator, typename _Sequence> 4137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh class _Safe_iterator; 4237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 4337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // An arbitrary iterator pointer is not singular. 4437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 4537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_singular_aux(const void*) { return false; } 4637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 4737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // We may have an iterator that derives from _Safe_iterator_base but isn't 4837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // a _Safe_iterator. 4937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator> 5037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 5137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_singular(_Iterator& __x) 5237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __check_singular_aux(&__x); } 5337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 5437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Non-NULL pointers are nonsingular. */ 5537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Tp> 5637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 5737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_singular(const _Tp* __ptr) 5837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __ptr == 0; } 5937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 6037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Safe iterators know if they are singular. */ 6137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator, typename _Sequence> 6237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 6337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_singular(const _Safe_iterator<_Iterator, _Sequence>& __x) 6437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __x._M_singular(); } 6537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 6637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Assume that some arbitrary iterator is dereferenceable, because we 6737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh can't prove that it isn't. */ 6837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator> 6937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 7037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_dereferenceable(_Iterator&) 7137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 7237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 7337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Non-NULL pointers are dereferenceable. */ 7437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Tp> 7537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 7637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_dereferenceable(const _Tp* __ptr) 7737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __ptr; } 7837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 7937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Safe iterators know if they are singular. */ 8037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator, typename _Sequence> 8137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 8237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_dereferenceable(const _Safe_iterator<_Iterator, _Sequence>& __x) 8337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __x._M_dereferenceable(); } 8437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 8537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** If the distance between two random access iterators is 8637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * nonnegative, assume the range is valid. 8737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 8837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _RandomAccessIterator> 8937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 9037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range_aux2(const _RandomAccessIterator& __first, 9137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _RandomAccessIterator& __last, 9237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::random_access_iterator_tag) 9337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __last - __first >= 0; } 9437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 9537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Can't test for a valid range with input iterators, because 9637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * iteration may be destructive. So we just assume that the range 9737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * is valid. 9837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 9937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 10037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 10137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range_aux2(const _InputIterator&, const _InputIterator&, 10237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::input_iterator_tag) 10337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 10437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 10537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** We say that integral types for a valid range, and defer to other 10637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * routines to realize what to do with integral types instead of 10737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * iterators. 10837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 10937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Integral> 11037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 11137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range_aux(const _Integral&, const _Integral&, std::__true_type) 11237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 11337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 11437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** We have iterators, so figure out what kind of iterators that are 11537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * to see if we can check the range ahead of time. 11637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 11737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 11837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 11937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range_aux(const _InputIterator& __first, 12037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator& __last, std::__false_type) 12137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 12237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator>::iterator_category 12337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Category; 12437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __valid_range_aux2(__first, __last, _Category()); 12537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 12637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 12737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Don't know what these iterators are, or if they are even 12837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * iterators (we may get an integral type for InputIterator), so 12937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * see if they are integral and pass them on to the next phase 13037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * otherwise. 13137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 13237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 13337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 13437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range(const _InputIterator& __first, const _InputIterator& __last) 13537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 13637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::__is_integer<_InputIterator>::__type _Integral; 13737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __valid_range_aux(__first, __last, _Integral()); 13837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 13937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 14037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Safe iterators know how to check if they form a valid range. */ 14137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator, typename _Sequence> 14237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 14337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range(const _Safe_iterator<_Iterator, _Sequence>& __first, 14437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _Safe_iterator<_Iterator, _Sequence>& __last) 14537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __first._M_valid_range(__last); } 14637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 14737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Safe local iterators know how to check if they form a valid range. */ 14837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _Iterator, typename _Sequence> 14937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 15037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __valid_range(const _Safe_local_iterator<_Iterator, _Sequence>& __first, 15137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _Safe_local_iterator<_Iterator, _Sequence>& __last) 15237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __first._M_valid_range(__last); } 15337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 15437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /* Checks that [first, last) is a valid range, and then returns 15537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * __first. This routine is useful when we can't use a separate 15637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh * assertion statement because, e.g., we are in a constructor. 15737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh */ 15837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 15937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline _InputIterator 16037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_valid_range(const _InputIterator& __first, 16137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator& __last 16237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __attribute__((__unused__))) 16337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 16437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __glibcxx_check_valid_range(__first, __last); 16537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __first; 16637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 16737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 16837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Checks that __s is non-NULL or __n == 0, and then returns __s. */ 16937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _CharT, typename _Integer> 17037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline const _CharT* 17137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_string(const _CharT* __s, 17237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _Integer& __n __attribute__((__unused__))) 17337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 17437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#ifdef _GLIBCXX_DEBUG_PEDANTIC 17537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __glibcxx_assert(__s != 0 || __n == 0); 17637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#endif 17737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __s; 17837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 17937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 18037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh /** Checks that __s is non-NULL and then returns __s. */ 18137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _CharT> 18237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline const _CharT* 18337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_string(const _CharT* __s) 18437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 18537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#ifdef _GLIBCXX_DEBUG_PEDANTIC 18637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __glibcxx_assert(__s != 0); 18737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#endif 18837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __s; 18937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 19037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 19137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Can't check if an input iterator sequence is sorted, because we 19237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // can't step through the sequence. 19337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 19437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 19537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_aux(const _InputIterator&, const _InputIterator&, 19637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::input_iterator_tag) 19737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 19837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 19937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Can verify if a forward iterator sequence is in fact sorted using 20037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // std::__is_sorted 20137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator> 20237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 20337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_aux(_ForwardIterator __first, _ForwardIterator __last, 20437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::forward_iterator_tag) 20537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 20637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh if (__first == __last) 20737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return true; 20837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 20937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __next = __first; 21037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh for (++__next; __next != __last; __first = __next, ++__next) 21137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh if (*__next < *__first) 21237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return false; 21337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 21437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return true; 21537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 21637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 21737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Can't check if an input iterator sequence is sorted, because we can't step 21837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // through the sequence. 21937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator, typename _Predicate> 22037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 22137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_aux(const _InputIterator&, const _InputIterator&, 22237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Predicate, std::input_iterator_tag) 22337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 22437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 22537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Can verify if a forward iterator sequence is in fact sorted using 22637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // std::__is_sorted 22737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator, typename _Predicate> 22837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 22937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_aux(_ForwardIterator __first, _ForwardIterator __last, 23037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Predicate __pred, std::forward_iterator_tag) 23137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 23237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh if (__first == __last) 23337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return true; 23437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 23537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __next = __first; 23637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh for (++__next; __next != __last; __first = __next, ++__next) 23737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh if (__pred(*__next, *__first)) 23837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return false; 23937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 24037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return true; 24137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 24237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 24337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Determine if a sequence is sorted. 24437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 24537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 24637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted(const _InputIterator& __first, const _InputIterator& __last) 24737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 24837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator>::iterator_category 24937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Category; 25037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 25137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Verify that the < operator for elements in the sequence is a 25237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // StrictWeakOrdering by checking that it is irreflexive. 25337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __glibcxx_assert(__first == __last || !(*__first < *__first)); 25437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 25537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __check_sorted_aux(__first, __last, _Category()); 25637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 25737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 25837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator, typename _Predicate> 25937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 26037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted(const _InputIterator& __first, const _InputIterator& __last, 26137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Predicate __pred) 26237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 26337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator>::iterator_category 26437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Category; 26537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 26637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Verify that the predicate is StrictWeakOrdering by checking that it 26737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // is irreflexive. 26837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __glibcxx_assert(__first == __last || !__pred(*__first, *__first)); 26937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 27037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __check_sorted_aux(__first, __last, __pred, _Category()); 27137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 27237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 27337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 27437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 27537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set_aux(const _InputIterator& __first, 27637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator& __last, 27737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::__true_type) 27837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __check_sorted(__first, __last); } 27937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 28037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator> 28137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 28237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set_aux(const _InputIterator&, 28337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator&, 28437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::__false_type) 28537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 28637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 28737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator, typename _Predicate> 28837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 28937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set_aux(const _InputIterator& __first, 29037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator& __last, 29137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Predicate __pred, std::__true_type) 29237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return __check_sorted(__first, __last, __pred); } 29337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 29437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator, typename _Predicate> 29537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 29637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set_aux(const _InputIterator&, 29737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator&, _Predicate, 29837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh std::__false_type) 29937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { return true; } 30037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 30137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // ... special variant used in std::merge, std::includes, std::set_*. 30237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator1, typename _InputIterator2> 30337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 30437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set(const _InputIterator1& __first, 30537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator1& __last, 30637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator2&) 30737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 30837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator1>::value_type 30937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ValueType1; 31037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator2>::value_type 31137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ValueType2; 31237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 31337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::__are_same<_ValueType1, _ValueType2>::__type 31437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _SameType; 31537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __check_sorted_set_aux(__first, __last, _SameType()); 31637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 31737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 31837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _InputIterator1, typename _InputIterator2, 31937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typename _Predicate> 32037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 32137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_sorted_set(const _InputIterator1& __first, 32237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator1& __last, 32337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh const _InputIterator2&, _Predicate __pred) 32437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 32537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator1>::value_type 32637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ValueType1; 32737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::iterator_traits<_InputIterator2>::value_type 32837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ValueType2; 32937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 33037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh typedef typename std::__are_same<_ValueType1, _ValueType2>::__type 33137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _SameType; 33237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __check_sorted_set_aux(__first, __last, __pred, _SameType()); 33337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 33437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 33537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // _GLIBCXX_RESOLVE_LIB_DEFECTS 33637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // 270. Binary search requirements overly strict 33737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Determine if a sequence is partitioned w.r.t. this element. 33837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator, typename _Tp> 33937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 34037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_partitioned_lower(_ForwardIterator __first, 34137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __last, const _Tp& __value) 34237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 34337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && *__first < __value) 34437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 34537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && !(*__first < __value)) 34637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 34737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __first == __last; 34837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 34937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 35037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator, typename _Tp> 35137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 35237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_partitioned_upper(_ForwardIterator __first, 35337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __last, const _Tp& __value) 35437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 35537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && !(__value < *__first)) 35637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 35737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && __value < *__first) 35837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 35937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __first == __last; 36037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 36137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 36237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh // Determine if a sequence is partitioned w.r.t. this element. 36337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator, typename _Tp, typename _Pred> 36437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 36537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_partitioned_lower(_ForwardIterator __first, 36637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __last, const _Tp& __value, 36737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Pred __pred) 36837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 36937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && bool(__pred(*__first, __value))) 37037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 37137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && !bool(__pred(*__first, __value))) 37237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 37337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __first == __last; 37437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 37537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 37637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh template<typename _ForwardIterator, typename _Tp, typename _Pred> 37737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh inline bool 37837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh __check_partitioned_upper(_ForwardIterator __first, 37937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _ForwardIterator __last, const _Tp& __value, 38037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh _Pred __pred) 38137f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh { 38237f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && !bool(__pred(__value, *__first))) 38337f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 38437f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh while (__first != __last && bool(__pred(__value, *__first))) 38537f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh ++__first; 38637f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh return __first == __last; 38737f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh } 38837f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh} // namespace __gnu_debug 38937f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh 39037f12739251d2637c9405c75951962b5e27bbceeAndrew Hsieh#endif 391