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Cleanups on boost::iterator_traits<>

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Broke MSVC though :(


[SVN r16157]
This commit is contained in:
Dave Abrahams 2002-11-08 06:57:31 +00:00
parent f0ea53e77e
commit 9655beb7ba
1 changed files with 39 additions and 39 deletions
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78
iterator_traits_test.cpp
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@ -1,4 +1,4 @@
// (C) Copyright David Abrahams 2001. Permission to copy, use, modify,
// (C) Copyright David Abrahams 2002. Permission to copy, use, modify,
// sell and distribute this software is granted provided this
// copyright notice appears in all copies. This software is provided
// "as is" without express or implied warranty, and with no claim as
@ -22,7 +22,7 @@
// 19 Jan 2001 Initial version with iterator operators (David Abrahams)
#include <boost/detail/iterator.hpp>
#include <boost/type_traits.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/operators.hpp>
#include <boost/static_assert.hpp>
#include <iterator>
@ -31,6 +31,11 @@
#include <cassert>
#include <iostream>
// A UDT for which we can specialize std::iterator_traits<element*> on
// compilers which don't support partial specialization. There's no
// other reasonable way to test pointers on those compilers.
struct element {};
// An iterator for which we can get traits.
struct my_iterator1
: boost::forward_iterator_helper<my_iterator1, char, long, const char*, const char&>
@ -77,46 +82,38 @@ struct my_iterator2
struct my_iterator3 : my_iterator1
{
typedef int difference_type;
my_iterator3(const char* p) : my_iterator1(p) {}
my_iterator3(const char* p)
: my_iterator1(p) {}
};
template <bool> struct assertion;
template <> struct assertion<true> { typedef char type; };
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct non_portable_tests
{
// Unfortunately, the VC6 standard library doesn't supply these :(
typedef typename boost::detail::iterator_traits<Iterator>::pointer test_pt;
typedef typename boost::detail::iterator_traits<Iterator>::reference test_rt;
BOOST_STATIC_ASSERT((
::boost::is_same<
test_pt,
pointer
>::value));
BOOST_STATIC_ASSERT((
::boost::is_same<
test_rt,
reference
>::value));
non_portable_tests()
{
BOOST_STATIC_ASSERT((::boost::is_same<test_pt, pointer>::value));
BOOST_STATIC_ASSERT((::boost::is_same<test_rt, reference>::value));
}
};
template <class Iterator,
class value_type, class difference_type, class pointer, class reference, class category>
struct portable_tests
{
typedef typename boost::detail::iterator_traits<Iterator>::difference_type test_dt;
typedef typename boost::detail::iterator_traits<Iterator>::iterator_category test_cat;
BOOST_STATIC_ASSERT((
::boost::is_same<
test_dt,
difference_type
>::value));
BOOST_STATIC_ASSERT((
::boost::is_same<
test_cat,
category
>::value));
portable_tests()
{
typedef typename boost::detail::iterator_traits<Iterator>::difference_type test_dt;
typedef typename boost::detail::iterator_traits<Iterator>::iterator_category test_cat;
BOOST_STATIC_ASSERT((::boost::is_same<test_dt, difference_type>::value));
BOOST_STATIC_ASSERT((::boost::is_same<test_cat, category>::value));
}
};
// Test iterator_traits
@ -125,12 +122,15 @@ template <class Iterator,
struct input_iterator_test
: portable_tests<Iterator,value_type,difference_type,pointer,reference,category>
{
typedef typename boost::detail::iterator_traits<Iterator>::value_type test_vt;
BOOST_STATIC_ASSERT((
::boost::is_same<
test_vt,
value_type
>::value));
input_iterator_test()
{
typedef typename boost::detail::iterator_traits<Iterator>::value_type test_vt;
BOOST_STATIC_ASSERT((
::boost::is_same<
test_vt,
value_type
>::value));
}
};
template <class Iterator,
@ -154,14 +154,13 @@ struct maybe_pointer_test
input_iterator_test<std::istream_iterator<int>, int, std::ptrdiff_t, int*, int&, std::input_iterator_tag>
istream_iterator_test;
//
#if defined(__BORLANDC__) && !defined(__SGI_STL_PORT)
typedef ::std::char_traits<char>::off_type distance;
non_pointer_test<std::ostream_iterator<int>,int,
distance,int*,int&,std::output_iterator_tag> ostream_iterator_test;
#elif defined(BOOST_MSVC_STD_ITERATOR)
non_pointer_test<std::ostream_iterator<int>,
int, void, void, void, std::output_iterator_tag>
int, void, int*, int&, std::output_iterator_tag>
ostream_iterator_test;
#else
non_pointer_test<std::ostream_iterator<int>,
@ -175,6 +174,7 @@ non_pointer_test<std::ostream_iterator<int>,
#else
typedef std::ptrdiff_t std_list_diff_type;
#endif
non_pointer_test<std::list<int>::iterator, int, std_list_diff_type, int*, int&, std::bidirectional_iterator_tag>
list_iterator_test;
@ -192,13 +192,13 @@ non_pointer_test<my_iterator2, char, long, const char*, const char&, std::forwar
non_pointer_test<my_iterator3, char, int, const char*, const char&, std::forward_iterator_tag>
my_iterator3_test;
int main()
{
char chars[100];
int ints[100];
for (std::ptrdiff_t length = 3; length < 100; length += length / 3)
for (int length = 3; length < 100; length += length / 3)
{
std::list<int> l(length);
assert(boost::detail::distance(l.begin(), l.end()) == length);