feedc0de/boost_iterator
1
0
Fork 0
forked from boostorg/iterator
Code Pull Requests Activity

iterator adaptor update and related changes

Browse Source 
[SVN r11554]
This commit is contained in:
Jeremy Siek
2001-11-04 02:50:10 +00:00
parent 3fd1c4bc5d
commit 4566798afc
2 changed files with 318 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
include/boost/counting_iterator.hpp
View File

@ -135,7 +135,15 @@ namespace detail {
// For a while, this wasn't true, but we rely on it below. This is a regression assert.
BOOST_STATIC_ASSERT(::boost::is_integral<char>::value);
# ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
BOOST_STATIC_CONSTANT(bool, value = std::numeric_limits<T>::is_specialized);
# if defined(ULLONG_MAX) || defined(ULONG_LONG_MAX)
BOOST_STATIC_CONSTANT(bool,
value = (
std::numeric_limits<T>::is_specialized
| boost::is_same<T,long long>::value
| boost::is_same<T,unsigned long long>::value));
# else
BOOST_STATIC_CONSTANT(bool, value = std::numeric_limits<T>::is_specialized);
# endif
# else
# if !defined(__BORLANDC__)
BOOST_STATIC_CONSTANT(bool, value = (
@ -173,14 +181,17 @@ struct counting_iterator_traits {
template <class Incrementable>
struct counting_iterator_policies : public default_iterator_policies
{
const Incrementable& dereference(type<const Incrementable&>, const Incrementable& i) const
{ return i; }
template <class Difference, class Iterator1, class Iterator2>
Difference distance(type<Difference>, const Iterator1& x,
const Iterator2& y) const
template <class IteratorAdaptor>
typename IteratorAdaptor::reference dereference(const IteratorAdaptor& i) const
{ return i.base(); }
template <class Iterator1, class Iterator2>
typename Iterator1::difference_type distance(
const Iterator1& x, const Iterator2& y) const
{
return boost::detail::any_distance<Difference>(x, y);//,(Difference*)());
typedef typename Iterator1::difference_type difference_type;
return boost::detail::any_distance<difference_type>(
x.base(), y.base());
}
};