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Author SHA1 Message Date
nobody
2e89b8ae60 This commit was manufactured by cvs2svn to create tag
'Version_1_20_2'.

[SVN r9073]
2001-02-10 14:52:07 +00:00
10 changed files with 1052 additions and 1099 deletions

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@@ -0,0 +1,282 @@
#ifndef BOOST_ITERATOR_CONCEPTS_HPP
#define BOOST_ITERATOR_CONCEPTS_HPP
#include <boost/concept_check.hpp>
#include <boost/iterator_traits.hpp>
namespace boost_concepts {
// Used a different namespace here (instead of "boost") so that the
// concept descriptions do not take for granted the names in
// namespace boost.
//===========================================================================
template <typename Iterator>
class ReadableIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::return_category
return_category;
void constraints() {
boost::function_requires< boost::SGIAssignableConcept<Iterator> >();
boost::function_requires< boost::EqualityComparableConcept<Iterator> >();
boost::function_requires< boost::DefaultConstructibleConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<return_category, boost::readable_iterator_tag> >();
reference r = *i; // or perhaps read(x)
value_type v(r);
boost::ignore_unused_variable_warning(v);
}
Iterator i;
};
template <typename Iterator, typename ValueType>
class WritableIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::return_category
return_category;
void constraints() {
boost::function_requires< boost::SGIAssignableConcept<Iterator> >();
boost::function_requires< boost::EqualityComparableConcept<Iterator> >();
boost::function_requires< boost::DefaultConstructibleConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<return_category, boost::writable_iterator_tag> >();
*i = v; // an alternative could be something like write(x, v)
}
ValueType v;
Iterator i;
};
template <typename Iterator>
class ConstantLvalueIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::return_category
return_category;
void constraints() {
boost::function_requires< ReadableIteratorConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<return_category,
boost::constant_lvalue_iterator_tag> >();
typedef typename boost::require_same<reference, const value_type&>::type req;
reference v = *i;
boost::ignore_unused_variable_warning(v);
}
Iterator i;
};
template <typename Iterator>
class MutableLvalueIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::return_category
return_category;
void constraints() {
boost::function_requires< ReadableIteratorConcept<Iterator> >();
boost::function_requires< WritableIteratorConcept<Iterator, value_type> >();
boost::function_requires<
boost::ConvertibleConcept<return_category,
boost::constant_lvalue_iterator_tag> >();
typedef typename boost::require_same<reference, value_type&>::type req;
reference v = *i;
boost::ignore_unused_variable_warning(v);
}
Iterator i;
};
//===========================================================================
template <typename Iterator>
class SinglePassIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::motion_category
motion_category;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< boost::SGIAssignableConcept<Iterator> >();
boost::function_requires< boost::EqualityComparableConcept<Iterator> >();
boost::function_requires< boost::DefaultConstructibleConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<motion_category,
boost::single_pass_iterator_tag> >();
// difference_type must be a signed integral type
++i;
(void)i++;
}
Iterator i;
};
template <typename Iterator>
class ForwardIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::motion_category
motion_category;
void constraints() {
boost::function_requires< SinglePassIteratorConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<motion_category,
boost::forward_iterator_tag> >();
}
};
template <typename Iterator>
class BidirectionalIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::motion_category
motion_category;
void constraints() {
boost::function_requires< ForwardIteratorConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<motion_category,
boost::bidirectional_iterator_tag> >();
--i;
(void)i--;
}
Iterator i;
};
template <typename Iterator>
class RandomAccessIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::motion_category
motion_category;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< BidirectionalIteratorConcept<Iterator> >();
boost::function_requires<
boost::ConvertibleConcept<motion_category,
boost::random_access_iterator_tag> >();
i += n;
i = i + n;
i = n + i;
i -= n;
i = i - n;
n = i - j;
}
difference_type n;
Iterator i, j;
};
//===========================================================================
template <typename Iterator>
class ReadableRandomAccessIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< RandomAccessIteratorConcept<Iterator> >();
boost::function_requires< ReadableIteratorConcept<Iterator> >();
reference r = i[n];
value_type v(r);
boost::ignore_unused_variable_warning(v);
}
difference_type n;
Iterator i;
};
template <typename Iterator>
class WritableRandomAccessIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< RandomAccessIteratorConcept<Iterator> >();
boost::function_requires< WritableIteratorConcept<Iterator, value_type> >();
i[n] = v;
boost::ignore_unused_variable_warning(v);
}
difference_type n;
value_type v;
Iterator i;
};
template <typename Iterator>
class ConstantLvalueRandomAccessIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< RandomAccessIteratorConcept<Iterator> >();
boost::function_requires< ReadableIteratorConcept<Iterator> >();
typedef typename boost::require_same<reference, const value_type&>::type req;
reference v = i[n];
boost::ignore_unused_variable_warning(v);
}
difference_type n;
value_type v;
Iterator i;
};
template <typename Iterator>
class MutableLvalueRandomAccessIteratorConcept {
public:
typedef typename boost::iterator_traits<Iterator>::value_type value_type;
typedef typename boost::iterator_traits<Iterator>::reference reference;
typedef typename boost::iterator_traits<Iterator>::difference_type
difference_type;
void constraints() {
boost::function_requires< RandomAccessIteratorConcept<Iterator> >();
boost::function_requires< WritableIteratorConcept<Iterator, value_type> >();
boost::function_requires< ReadableIteratorConcept<Iterator> >();
typedef typename boost::require_same<reference, value_type&>::type req;
reference v = i[n];
boost::ignore_unused_variable_warning(v);
}
difference_type n;
value_type v;
Iterator i;
};
} // namespace boost_concepts
#endif // BOOST_ITERATOR_CONCEPTS_HPP

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@@ -0,0 +1,60 @@
#ifndef BOOST_ITERATOR_TRAITS_HPP
#define BOOST_ITERATOR_TRAITS_HPP
#include <boost/config.hpp>
#include <boost/type_traits.hpp>
namespace boost {
template <typename Iterator>
struct iterator_traits {
typedef typename Iterator::value_type value_type;
typedef typename Iterator::reference reference;
typedef typename Iterator::pointer pointer;
typedef typename Iterator::difference_type difference_type;
typedef typename Iterator::return_category return_category;
typedef typename Iterator::motion_category motion_category;
};
// Motion Categories
struct single_pass_iterator_tag { };
struct forward_iterator_tag : public single_pass_iterator_tag { };
struct bidirectional_iterator_tag : public forward_iterator_tag { };
struct random_access_iterator_tag : public bidirectional_iterator_tag { };
// Return Type Categories
struct readable_iterator_tag { };
struct writable_iterator_tag { };
struct mutable_lvalue_iterator_tag : virtual public writable_iterator_tag,
virtual public readable_iterator_tag { };
struct constant_lvalue_iterator_tag : public readable_iterator_tag { };
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
namespace detail {
template <bool IsConst>
struct pointer_return_category {
typedef constant_lvalue_iterator_tag type;
};
template <>
struct pointer_return_category<false> {
typedef mutable_lvalue_iterator_tag type;
};
} // namespace detail
template <typename T>
struct iterator_traits<T*> {
typedef T value_type;
typedef T& reference;
typedef T* pointer;
typedef std::ptrdiff_t difference_type;
typedef typename detail::pointer_return_category<is_const<T>::value>::type
return_category;
typedef random_access_iterator_tag motion_category;
};
#endif
} // namespace boost
#endif // BOOST_ITERATOR_TRAITS_HPP

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@@ -0,0 +1,13 @@
#include <boost/iterator_concepts.hpp>
int
main()
{
boost::function_requires<
boost_concepts::MutableLvalueRandomAccessIteratorConcept<int*> >();
boost::function_requires<
boost_concepts::ConstantLvalueRandomAccessIteratorConcept<const int*> >();
return 0;
}

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@@ -0,0 +1,203 @@
// (C) Copyright David Abrahams and Jeremy Siek 2000-2001. 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 to its suitability
// for any purpose.
//
// See http://www.boost.org for most recent version including documentation.
//
// Supplies:
//
// template <class Incrementable> class counting_iterator_traits;
// template <class Incrementable> class counting_iterator_policies;
//
// Iterator traits and policies for adapted iterators whose dereferenced
// value progresses through consecutive values of Incrementable when the
// iterator is derferenced.
//
// template <class Incrementable> struct counting_iterator_generator;
//
// A "type generator" whose nested type "type" is a counting iterator as
// described above.
//
// template <class Incrementable>
// typename counting_iterator_generator<Incrementable>::type
// make_counting_iterator(Incrementable);
//
// A function which produces an adapted counting iterator over values of
// Incrementable.
//
// Revision History
// 09 Feb 2001 Factored out is_numeric computation. Borland still
// unhappy :( (David Abrahams)
// 08 Feb 2001 Beginning of a failed attempt to appease Borland
// (David Abrahams)
// 07 Feb 2001 rename counting_iterator() -> make_counting_iterator()
// (David Abrahams)
// 04 Feb 2001 Added counting_iterator_generator; updated comments
// (David Abrahams)
// 24 Jan 2001 initial revision, based on Jeremy Siek's
// boost/pending/integer_range.hpp (David Abrahams)
#ifndef BOOST_COUNTING_ITERATOR_HPP_DWA20000119
# define BOOST_COUNTING_ITERATOR_HPP_DWA20000119
# include <boost/config.hpp>
# include <boost/detail/iterator.hpp>
# include <boost/iterator_adaptors.hpp>
# include <boost/type_traits.hpp>
# include <boost/detail/numeric_traits.hpp>
# include <boost/static_assert.hpp>
# ifndef BOOST_NO_LIMITS
# include <limits>
# endif
namespace boost {
namespace detail {
// Template class counting_iterator_traits_select -- choose an
// iterator_category and difference_type for a counting_iterator at
// compile-time based on whether or not it wraps an integer or an iterator,
// using "poor man's partial specialization".
template <bool is_integer> struct counting_iterator_traits_select;
// Incrementable is an iterator type
template <>
struct counting_iterator_traits_select<false>
{
template <class Incrementable>
struct traits
{
private:
typedef boost::detail::iterator_traits<Incrementable> x;
public:
typedef typename x::iterator_category iterator_category;
typedef typename x::difference_type difference_type;
};
};
// Incrementable is a numeric type
template <>
struct counting_iterator_traits_select<true>
{
template <class Incrementable>
struct traits
{
typedef typename
boost::detail::numeric_traits<Incrementable>::difference_type
difference_type;
typedef std::random_access_iterator_tag iterator_category;
};
};
// Template class distance_policy_select -- choose a policy for computing the
// distance between counting_iterators at compile-time based on whether or not
// the iterator wraps an integer or an iterator, using "poor man's partial
// specialization".
template <bool is_integer> struct distance_policy_select;
// A policy for wrapped iterators
template <>
struct distance_policy_select<false>
{
template <class Distance, class Incrementable>
struct policy {
static Distance distance(Incrementable x, Incrementable y)
{ return boost::detail::distance(x, y); }
};
};
// A policy for wrapped numbers
template <>
struct distance_policy_select<true>
{
template <class Distance, class Incrementable>
struct policy {
static Distance distance(Incrementable x, Incrementable y)
{ return numeric_distance(x, y); }
};
};
// Try to detect numeric types at compile time in ways compatible with the
// limitations of the compiler and library.
template <class T>
struct is_numeric {
// 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);
enum { value =
#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
std::numeric_limits<T>::is_specialized
#elif defined(__BORLANDC__)
::boost::is_integral<T>::value
#else
boost::is_convertible<int,T>::value && boost::is_convertible<T,int>::value
#endif
};
};
// Compute the distance over arbitrary numeric and/or iterator types
template <class Distance, class Incrementable>
Distance any_distance(Incrementable start, Incrementable finish, Distance* = 0)
{
return distance_policy_select<(
is_numeric<Incrementable>::value)>::template
policy<Distance, Incrementable>::distance(start, finish);
}
} // namespace detail
template <class Incrementable>
struct counting_iterator_traits {
private:
enum {numeric = detail::is_numeric<Incrementable>::value };
typedef typename detail::counting_iterator_traits_select<(
numeric
)>::template traits<Incrementable> traits;
public:
typedef Incrementable value_type;
typedef const Incrementable& reference;
typedef const value_type* pointer;
typedef typename traits::difference_type difference_type;
typedef typename traits::iterator_category iterator_category;
};
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
{
return boost::detail::any_distance<Difference>(x, y);//,(Difference*)());
}
};
// A type generator for counting iterators
template <class Incrementable>
struct counting_iterator_generator
{
typedef iterator_adaptor<Incrementable,
counting_iterator_policies<Incrementable>,
counting_iterator_traits<Incrementable> > type;
};
// Manufacture a counting iterator for an arbitrary incrementable type
template <class Incrementable>
inline typename counting_iterator_generator<Incrementable>::type
make_counting_iterator(Incrementable x)
{
return iterator_adaptor<Incrementable,
counting_iterator_policies<Incrementable>,
counting_iterator_traits<Incrementable> >(x);
}
} // namespace boost
#endif // BOOST_COUNTING_ITERATOR_HPP_DWA20000119

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@@ -1,55 +0,0 @@
// (C) Copyright Jeremy Siek 2001. 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
// to its suitability for any purpose.
// Revision History:
// 27 Feb 2001 Jeremy Siek
// Initial checkin.
#ifndef BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
#define BOOST_FUNCTION_OUTPUT_ITERATOR_HPP
#include <iterator>
namespace boost {
template <class UnaryFunction>
class function_output_iterator {
typedef function_output_iterator self;
public:
typedef std::output_iterator_tag iterator_category;
typedef void value_type;
typedef void difference_type;
typedef void pointer;
typedef void reference;
explicit function_output_iterator(const UnaryFunction& f = UnaryFunction())
: m_f(f) {}
struct output_proxy {
output_proxy(UnaryFunction& f) : m_f(f) { }
template <class T> output_proxy& operator=(const T& value) {
m_f(value);
return *this;
}
UnaryFunction& m_f;
};
output_proxy operator*() { return output_proxy(m_f); }
self& operator++() { return *this; }
self& operator++(int) { return *this; }
private:
UnaryFunction m_f;
};
template <class UnaryFunction>
inline function_output_iterator<UnaryFunction>
make_function_output_iterator(const UnaryFunction& f = UnaryFunction()) {
return function_output_iterator<UnaryFunction>(f);
}
} // namespace boost
#endif // BOOST_FUNCTION_OUTPUT_ITERATOR_HPP

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@@ -5,10 +5,8 @@
// for any purpose.
//
// Revision History:
// 11 Feb 2001 Use new iterator_adaptor interface, Fixes for Borland.
// (Dave Abrahams)
// 04 Feb 2001 Support for user-defined iterator categories (Dave Abrahams)
// 30 Jan 2001 Initial Checkin (Dave Abrahams)
// 04 Feb 2001 Support for user-defined iterator categories (David Abrahams)
// 30 Jan 2001 Initial Checkin (David Abrahams)
#ifndef BOOST_HALF_OPEN_RANGE_HPP_
# define BOOST_HALF_OPEN_RANGE_HPP_
@@ -77,7 +75,7 @@ namespace detail {
static const Incrementable choose(const Incrementable& start, const Incrementable& finish)
{
return finish_chooser<(
::boost::is_convertible<Category*,std::random_access_iterator_tag*>::value
boost::is_convertible<Category,std::random_access_iterator_tag>::value
)>::template rebind<Incrementable>::choose(start, finish);
}
};
@@ -87,29 +85,27 @@ namespace detail {
template <class Incrementable>
struct half_open_range
{
typedef typename counting_iterator_generator<Incrementable>::type iterator;
typedef iterator_adaptor<Incrementable,
counting_iterator_policies<Incrementable>,
counting_iterator_traits<Incrementable> > iterator;
private: // utility type definitions
// Using iter_t prevents compiler confusion with boost::iterator
typedef typename counting_iterator_generator<Incrementable>::type iter_t;
typedef std::less<Incrementable> less_value;
typedef typename iter_t::iterator_category category;
typedef half_open_range<Incrementable> self;
typedef typename boost::detail::iterator_traits<iterator>::iterator_category category;
public:
typedef iter_t const_iterator;
typedef typename iterator::value_type value_type;
typedef typename iterator::difference_type difference_type;
typedef typename iterator::reference reference;
typedef typename iterator::reference const_reference;
typedef typename iterator::pointer pointer;
typedef typename iterator::pointer const_pointer;
typedef iterator const_iterator;
typedef typename counting_iterator_traits<Incrementable>::value_type value_type;
typedef typename counting_iterator_traits<Incrementable>::difference_type difference_type;
typedef typename counting_iterator_traits<Incrementable>::reference reference;
typedef typename counting_iterator_traits<Incrementable>::reference const_reference;
typedef typename counting_iterator_traits<Incrementable>::pointer pointer;
typedef typename counting_iterator_traits<Incrementable>::pointer const_pointer;
// It would be nice to select an unsigned type, but this is appropriate
// since the library makes an attempt to select a difference_type which can
// hold the difference between any two iterators.
typedef typename iterator::difference_type size_type;
typedef typename counting_iterator_traits<Incrementable>::difference_type size_type;
half_open_range(Incrementable start, Incrementable finish)
: m_start(start),
@@ -134,14 +130,7 @@ struct half_open_range
#endif
)
{}
half_open_range& operator=(const self& x)
{
m_start = x.m_start;
m_finish = x.m_finish;
return *this;
}
half_open_range& operator=(const std::pair<Incrementable,Incrementable>& x)
{
m_start = x.first;

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@@ -5,7 +5,7 @@
// in all copies. This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// See http://www.boost.org/libs/utility for documentation.
// See http://www.boost.org for most recent version including documentation.
// Revision History
// 12 Jan 01 added <cstddef> for std::ptrdiff_t (Jens Maurer)
@@ -21,7 +21,7 @@
namespace boost
{
# if defined(BOOST_NO_STD_ITERATOR) && !defined(BOOST_MSVC_STD_ITERATOR)
# ifdef BOOST_NO_STD_ITERATOR
template <class Category, class T,
class Distance = std::ptrdiff_t,
class Pointer = T*, class Reference = T&>

File diff suppressed because it is too large Load Diff

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@@ -5,10 +5,6 @@
// test suite for STL concepts such as iterators and containers.
//
// Revision History:
// 28 Apr 2002 Fixed input iterator requirements.
// For a == b a++ == b++ is no longer required.
// See 24.1.1/3 for details.
// (Thomas Witt)
// 08 Feb 2001 Fixed bidirectional iterator test so that
// --i is no longer a precondition.
// (Jeremy Siek)
@@ -19,14 +15,12 @@
# include <assert.h>
# include <boost/type_traits.hpp>
# include <boost/static_assert.hpp>
# include <boost/concept_archetype.hpp> // for detail::dummy_constructor
namespace boost {
// use this for the value type
struct dummyT {
dummyT() { }
dummyT(detail::dummy_constructor) { }
dummyT(int x) : m_x(x) { }
int foo() const { return m_x; }
bool operator==(const dummyT& d) const { return m_x == d.m_x; }
@@ -78,40 +72,22 @@ void mutable_trivial_iterator_test(const Iterator i, const Iterator j, T val)
template <class Iterator, class T>
void input_iterator_test(Iterator i, T v1, T v2)
{
Iterator i1(i);
Iterator i1 = i, i2 = i;
assert(i == i1);
assert(!(i != i1));
assert(i == i1++);
assert(i != ++i2);
// I can see no generic way to create an input iterator
// that is in the domain of== of i and != i.
// The following works for istream_iterator but is not
// guaranteed to work for arbitrary input iterators.
//
// Iterator i2;
//
// assert(i != i2);
// assert(!(i == i2));
trivial_iterator_test(i, i1, v1);
trivial_iterator_test(i, i2, v1);
assert(*i1 == v1);
assert(*i == v1);
// we cannot test for equivalence of (void)++i & (void)i++
// as i is only guaranteed to be single pass.
assert(*i++ == v1);
i1 = i;
assert(i == i1);
assert(!(i != i1));
assert(*i1 == v2);
assert(*i == v2);
// i is dereferencable, so it must be incrementable.
++i;
assert(i == i1);
assert(i == i2);
++i1;
++i2;
// how to test for operator-> ?
trivial_iterator_test(i, i1, v2);
trivial_iterator_test(i, i2, v2);
}
// how to test output iterator?
@@ -146,23 +122,6 @@ void forward_iterator_test(Iterator i, T v1, T v2)
{
input_iterator_test(i, v1, v2);
Iterator i1 = i, i2 = i;
assert(i == i1++);
assert(i != ++i2);
trivial_iterator_test(i, i1, v1);
trivial_iterator_test(i, i2, v1);
++i;
assert(i == i1);
assert(i == i2);
++i1;
++i2;
trivial_iterator_test(i, i1, v2);
trivial_iterator_test(i, i2, v2);
// borland doesn't allow non-type template parameters
# if !defined(__BORLANDC__) || (__BORLANDC__ > 0x551)
lvalue_test<(boost::is_pointer<Iterator>::value)>::check(i);

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@@ -1,59 +0,0 @@
// (C) Copyright Ronald Garcia 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 to its suitability for any purpose.
// See http://www.boost.org/libs/utility/shared_container_iterator.html for documentation.
#ifndef SHARED_CONTAINER_ITERATOR_RG08102002_HPP
#define SHARED_CONTAINER_ITERATOR_RG08102002_HPP
#include "boost/iterator_adaptors.hpp"
#include "boost/shared_ptr.hpp"
#include <utility>
namespace boost {
template <typename Container>
struct shared_container_iterator_policies :
public boost::default_iterator_policies {
typedef boost::shared_ptr<Container> container_ref_t;
container_ref_t container_ref;
shared_container_iterator_policies(container_ref_t const& c) :
container_ref(c) { }
shared_container_iterator_policies() { }
};
template <typename Container>
class shared_container_iterator_generator {
typedef typename Container::iterator iterator;
typedef shared_container_iterator_policies<Container> policy;
public:
typedef boost::iterator_adaptor<iterator,policy> type;
};
template <typename Container>
typename shared_container_iterator_generator<Container>::type
make_shared_container_iterator(typename Container::iterator iter,
boost::shared_ptr<Container> const& container) {
typedef typename shared_container_iterator_generator<Container>::type
iterator;
typedef shared_container_iterator_policies<Container> policy;
return iterator(iter,policy(container));
}
template <typename Container>
std::pair<
typename shared_container_iterator_generator<Container>::type,
typename shared_container_iterator_generator<Container>::type>
make_shared_container_range(boost::shared_ptr<Container> const& container) {
return
std::make_pair(
make_shared_container_iterator(container->begin(),container),
make_shared_container_iterator(container->end(),container));
}
} // namespace boost
#endif // SHARED_CONTAINER_ITERATOR_RG08102002_HPP