整理

2026-03-23 20:54:41 +08:00
commit e13b3650e9
4596 changed files with 1015768 additions and 0 deletions
--- a/include/boost/move/detail/iterator_traits.hpp
+++ b/include/boost/move/detail/iterator_traits.hpp
@@ -0,0 +1,177 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2014-2014.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/move for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//! \file
+
+#ifndef BOOST_MOVE_DETAIL_ITERATOR_TRAITS_HPP
+#define BOOST_MOVE_DETAIL_ITERATOR_TRAITS_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#if (BOOST_CXX_VERSION > 201703L) && defined(__cpp_lib_concepts)
+
+#include <iterator>
+
+#define BOOST_MOVE_CONTIGUOUS_ITERATOR_TAG
+
+namespace boost {
+namespace movelib {
+
+   using std::iterator_traits;
+
+   template<class T>
+   struct iter_difference
+   {
+      typedef typename std::iterator_traits<T>::difference_type type;
+   };
+
+   template<class T>
+   struct iter_value
+   {
+      typedef typename std::iterator_traits<T>::value_type type;
+   };
+
+   template<class T>
+   struct iter_category
+   {
+      typedef typename std::iterator_traits<T>::iterator_category type;
+   };
+
+}} //namespace boost::movelib
+
+#else
+
+#include <cstddef>
+#include <boost/move/detail/type_traits.hpp>
+
+#include <boost/move/detail/std_ns_begin.hpp>
+
+BOOST_MOVE_STD_NS_BEG
+
+struct input_iterator_tag;
+struct forward_iterator_tag;
+struct bidirectional_iterator_tag;
+struct random_access_iterator_tag;
+struct output_iterator_tag;
+
+#if (  (defined(BOOST_GNU_STDLIB) && (__cplusplus > 201703L))\
+    || (defined(_LIBCPP_VERSION) && (_LIBCPP_STD_VER > 17))\
+    || (defined(_YVALS) && defined(_CPPLIB_VER) && defined(__cpp_lib_concepts))\
+    || (__cplusplus >= 202002L)\
+    )
+#  define BOOST_MOVE_CONTIGUOUS_ITERATOR_TAG
+struct contiguous_iterator_tag;
+
+#endif
+
+BOOST_MOVE_STD_NS_END
+
+#include <boost/move/detail/std_ns_end.hpp>
+
+namespace boost{  namespace movelib{
+
+template<class T>
+struct iter_difference
+{
+   typedef typename T::difference_type type;
+};
+
+template<class T>
+struct iter_difference<T*>
+{
+   typedef std::ptrdiff_t type;
+};
+
+template<class T>
+struct iter_value
+{
+   typedef typename T::value_type type;
+};
+
+template<class T>
+struct iter_value<T*>
+{
+   typedef T type;
+};
+
+template<class T>
+struct iter_value<const T*>
+{
+   typedef T type;
+};
+
+template<class T>
+struct iter_category
+{
+   typedef typename T::iterator_category type;
+};
+
+
+template<class T>
+struct iter_category<T*>
+{
+   typedef std::random_access_iterator_tag type;
+};
+
+template<class Iterator>
+struct iterator_traits
+{
+   typedef typename iter_difference<Iterator>::type   difference_type;
+   typedef typename iter_value<Iterator>::type        value_type;
+   typedef typename Iterator::pointer                 pointer;
+   typedef typename Iterator::reference               reference;
+   typedef typename iter_category<Iterator>::type     iterator_category;
+};
+
+template<class T>
+struct iterator_traits<T*>
+{
+   typedef std::ptrdiff_t                    difference_type;
+   typedef T                                 value_type;
+   typedef T*                                pointer;
+   typedef T&                                reference;
+   typedef std::random_access_iterator_tag   iterator_category;
+};
+
+template<class T>
+struct iterator_traits<const T*>
+{
+   typedef std::ptrdiff_t                    difference_type;
+   typedef T                                 value_type;
+   typedef const T*                          pointer;
+   typedef const T&                          reference;
+   typedef std::random_access_iterator_tag   iterator_category;
+};
+
+}} //namespace boost::movelib
+
+#endif   //
+
+#include <boost/move/detail/type_traits.hpp>
+
+namespace boost {
+namespace movelib {
+
+template<class T>
+struct iter_size
+   : boost::move_detail::
+      make_unsigned<typename iter_difference<T>::type >
+{};
+
+}}  //namespace boost move_detail {
+
+#endif //#ifndef BOOST_MOVE_DETAIL_ITERATOR_TRAITS_HPP