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Added projection support.

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[SVN r1199]
This commit is contained in:
Thomas Witt
2003-04-26 13:35:34 +00:00
parent de057da47e
commit c9dac5c7fb
1 changed files with 81 additions and 0 deletions
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81
test/transform_iterator_test.cpp
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@@ -20,6 +20,7 @@
#include <boost/iterator/iterator_concepts.hpp>
#include <boost/iterator/new_iterator_tests.hpp>
#include <boost/pending/iterator_tests.hpp>
#include <boost/bind.hpp>
#include <boost/concept_check.hpp>
#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
@@ -46,6 +47,48 @@ struct mult_functor {
int a;
};
struct select_first
{
typedef int& result_type;
int& operator()(std::pair<int, int>& p) const
{
return p.first;
}
};
struct select_second
{
typedef int& result_type;
int& operator()(std::pair<int, int>& p) const
{
return p.second;
}
};
struct const_select_first
{
typedef int const& result_type;
int const& operator()(std::pair<int, int>const& p) const
{
return p.first;
}
};
struct value_select_first
{
typedef int result_type;
int operator()(std::pair<int, int>const& p) const
{
return p.first;
}
};
int
main()
{
@@ -76,6 +119,44 @@ main()
boost::random_access_readable_iterator_test(i, N, x);
}
// Test transform_iterator as projection iterator
{
typedef std::pair<int, int> pair_t;
int x[N];
int y[N];
pair_t values[N];
for(int i = 0; i < N; ++i) {
x[i] = i;
y[i] = N - (i + 1);
}
std::copy(x,
x + N,
boost::make_transform_iterator((pair_t*)values, select_first()));
std::copy(y,
y + N,
boost::make_transform_iterator((pair_t*)values, select_second()));
boost::random_access_readable_iterator_test(boost::make_transform_iterator((pair_t*)values, value_select_first()),
N,
x);
boost::random_access_readable_iterator_test(boost::make_transform_iterator((pair_t*)values, const_select_first()),
N,
x);
boost::constant_lvalue_iterator_test(boost::make_transform_iterator((pair_t*)values, const_select_first()), x[0]);
boost::mutable_lvalue_iterator_test(boost::make_transform_iterator((pair_t*)values, select_first()), x[0], 17);
}
std::cout << "test successful " << std::endl;
return 0;
}