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Update shared_ptr casts.

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[SVN r81463]
This commit is contained in:
Peter Dimov
2012-11-21 17:43:48 +00:00
parent 7835914d83
commit 97d32745aa
3 changed files with 229 additions and 59 deletions
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202
test/sp_array_cast_test.cpp Normal file
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//
// sp_array_cast_test.cpp
//
// Copyright (c) 2012 Peter Dimov
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
#include <boost/shared_ptr.hpp>
#include <boost/detail/lightweight_test.hpp>
struct X
{
};
void static_cast_test()
{
{
boost::shared_ptr<void> pv;
boost::shared_ptr<int[]> pi = boost::static_pointer_cast<int[]>( pv );
BOOST_TEST( pi.get() == 0 );
boost::shared_ptr<int[3]> pi2 = boost::static_pointer_cast<int[3]>( pv );
BOOST_TEST( pi2.get() == 0 );
boost::shared_ptr<X[]> px = boost::static_pointer_cast<X[]>( pv );
BOOST_TEST( px.get() == 0 );
boost::shared_ptr<X[5]> px2 = boost::static_pointer_cast<X[5]>( pv );
BOOST_TEST( px2.get() == 0 );
}
{
boost::shared_ptr<int[]> pi( new int[2] );
boost::shared_ptr<void> pv( pi );
boost::shared_ptr<int[]> pi2 = boost::static_pointer_cast<int[]>( pv );
BOOST_TEST(pi.get() == pi2.get());
BOOST_TEST(!(pi < pi2 || pi2 < pi));
boost::shared_ptr<int[2]> pi3 = boost::static_pointer_cast<int[2]>( pv );
BOOST_TEST(pi.get() == pi3.get());
BOOST_TEST(!(pi < pi3 || pi3 < pi));
boost::shared_ptr<void> pv2( pi3 );
boost::shared_ptr<int[]> pi4 = boost::static_pointer_cast<int[]>( pv2 );
BOOST_TEST(pi.get() == pi4.get());
BOOST_TEST(!(pi < pi4 || pi4 < pi));
}
{
boost::shared_ptr<X[]> px( new X[4] );
boost::shared_ptr<void> pv( px );
boost::shared_ptr<X[]> px2 = boost::static_pointer_cast<X[]>( pv );
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
boost::shared_ptr<X[4]> px3 = boost::static_pointer_cast<X[4]>( pv );
BOOST_TEST(px.get() == px3.get());
BOOST_TEST(!(px < px3 || px3 < px));
boost::shared_ptr<void> pv2( px3 );
boost::shared_ptr<X[]> px4 = boost::static_pointer_cast<X[]>( pv2 );
BOOST_TEST(px.get() == px4.get());
BOOST_TEST(!(px < px4 || px4 < px));
}
}
void const_cast_test()
{
{
boost::shared_ptr<int const volatile[]> px;
boost::shared_ptr<int[]> px2 = boost::const_pointer_cast<int[]>(px);
BOOST_TEST( px2.get() == 0 );
}
{
boost::shared_ptr<int const volatile[2]> px;
boost::shared_ptr<int[2]> px2 = boost::const_pointer_cast<int[2]>(px);
BOOST_TEST( px2.get() == 0 );
}
{
boost::shared_ptr<X const volatile[]> px;
boost::shared_ptr<X[]> px2 = boost::const_pointer_cast<X[]>(px);
BOOST_TEST( px2.get() == 0 );
}
{
boost::shared_ptr<X const volatile[5]> px;
boost::shared_ptr<X[5]> px2 = boost::const_pointer_cast<X[5]>(px);
BOOST_TEST( px2.get() == 0 );
}
{
boost::shared_ptr<int const volatile[]> px( new int[3] );
boost::shared_ptr<int[]> px2 = boost::const_pointer_cast<int[]>(px);
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
}
{
boost::shared_ptr<int const volatile[3]> px( new int[3] );
boost::shared_ptr<int[3]> px2 = boost::const_pointer_cast<int[3]>(px);
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
}
{
boost::shared_ptr<X const volatile[]> px( new X[4] );
boost::shared_ptr<X[]> px2 = boost::const_pointer_cast<X[]>(px);
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
}
{
boost::shared_ptr<X const volatile[4]> px( new X[4] );
boost::shared_ptr<X[4]> px2 = boost::const_pointer_cast<X[4]>(px);
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
}
}
void reinterpret_cast_test()
{
{
boost::shared_ptr<int[]> pi;
BOOST_TEST( pi.get() == 0 );
boost::shared_ptr<int[3]> pi2 = boost::reinterpret_pointer_cast<int[3]>( pi );
BOOST_TEST( pi2.get() == 0 );
boost::shared_ptr<int[6]> pi3 = boost::reinterpret_pointer_cast<int[6]>( pi2 );
BOOST_TEST( pi3.get() == 0 );
}
{
boost::shared_ptr<X[]> px;
BOOST_TEST( px.get() == 0 );
boost::shared_ptr<X[5]> px2 = boost::reinterpret_pointer_cast<X[5]>( px );
BOOST_TEST( px2.get() == 0 );
boost::shared_ptr<X[9]> px3 = boost::reinterpret_pointer_cast<X[9]>( px2 );
BOOST_TEST( px3.get() == 0 );
}
{
boost::shared_ptr<int[]> pi( new int[2] );
boost::shared_ptr<int[2]> pi2 = boost::reinterpret_pointer_cast<int[2]>( pi );
BOOST_TEST(pi.get() == pi2.get());
BOOST_TEST(!(pi < pi2 || pi2 < pi));
boost::shared_ptr<int[1]> pi3 = boost::reinterpret_pointer_cast<int[1]>( pi2 );
BOOST_TEST(pi.get() == pi3.get());
BOOST_TEST(!(pi < pi3 || pi3 < pi));
boost::shared_ptr<int[]> pi4 = boost::reinterpret_pointer_cast<int[]>( pi3 );
BOOST_TEST(pi.get() == pi4.get());
BOOST_TEST(!(pi < pi4 || pi4 < pi));
}
{
boost::shared_ptr<X[]> px( new X[4] );
boost::shared_ptr<X[7]> px2 = boost::reinterpret_pointer_cast<X[7]>( px );
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
boost::shared_ptr<X[4]> px3 = boost::reinterpret_pointer_cast<X[4]>( px2 );
BOOST_TEST(px.get() == px3.get());
BOOST_TEST(!(px < px3 || px3 < px));
boost::shared_ptr<X[]> px4 = boost::reinterpret_pointer_cast<X[]>( px3 );
BOOST_TEST(px.get() == px4.get());
BOOST_TEST(!(px < px4 || px4 < px));
}
}
int main()
{
static_cast_test();
const_cast_test();
reinterpret_cast_test();
return boost::report_errors();
}