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Borland workarounds

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[SVN r20879]
This commit is contained in:
Dave Abrahams
2003-11-20 16:17:30 +00:00
parent f46f7f8091
commit 6b2da49430
2 changed files with 56 additions and 4 deletions
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30
include/boost/iterator/is_lvalue_iterator.hpp
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@ -5,13 +5,26 @@
# define IS_LVALUE_ITERATOR_DWA2003112_HPP
#include <boost/mpl/bool.hpp>
#include <boost/detail/workaround.hpp>
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
# include <boost/mpl/if.hpp>
# include <boost/mpl/and.hpp>
# include <boost/mpl/not.hpp>
#endif
#include <boost/detail/iterator.hpp>
#include <boost/iterator.hpp>
#include <boost/type_traits/detail/bool_trait_def.hpp>
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
# include <boost/type_traits/is_integral.hpp>
# include <boost/type_traits/is_const.hpp>
#endif
#include <boost/iterator/detail/any_conversion_eater.hpp>
// should be the last #include
// should be the last #includes
#include <boost/type_traits/detail/bool_trait_def.hpp>
#include <boost/iterator/detail/config_def.hpp>
#ifndef BOOST_NO_IS_CONVERTIBLE
@ -49,7 +62,19 @@ namespace detail
// convertible to Value const&
struct conversion_eater
{
// Borland (at leasT 5.5.1) has some problems converting to
// non-const Value& where Value is an integral type.
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
typedef typename mpl::if_<
mpl::and_<is_integral<Value>, mpl::not_<is_const<Value> > >
, Value
, Value&
>::type src;
conversion_eater(src);
#else
conversion_eater(Value&);
#endif
};
static char tester(conversion_eater, int);
@ -144,5 +169,6 @@ BOOST_TT_AUX_BOOL_TRAIT_DEF1(
#endif
#include <boost/iterator/detail/config_undef.hpp>
#include <boost/type_traits/detail/bool_trait_undef.hpp>
#endif // IS_LVALUE_ITERATOR_DWA2003112_HPP

30
test/is_lvalue_iterator.cpp
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@ -52,6 +52,20 @@ struct proxy_iterator : boost::iterator<std::output_iterator_tag,v>
proxy operator*() const;
};
template <class T>
struct lvalue_iterator
{
typedef T value_type;
typedef T& reference;
typedef T difference_type;
typedef std::input_iterator_tag iterator_category;
typedef T* pointer;
T& operator*() const;
lvalue_iterator& operator++();
lvalue_iterator operator++(int);
};
BOOST_TT_BROKEN_COMPILER_SPEC(proxy_iterator::proxy)
int main()
@ -68,8 +82,14 @@ int main()
#endif
// Make sure inaccessible copy constructor doesn't prevent
// reference binding
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<noncopyable_iterator>::value);
// BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<noncopyable_iterator>::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<v> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<int> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<long> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<v*>::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<v const*>::value);
@ -81,7 +101,13 @@ int main()
#ifndef BOOST_NO_LVALUE_RETURN_DETECTION
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<value_iterator>::value);
#endif
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<noncopyable_iterator>::value);
// BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<noncopyable_iterator>::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<v> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<float> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<long> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<int> >::value);
return 0;
}