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- //
- // Copyright Chris Glover, 2016.
- //
- // 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/type_index/runtime_cast.hpp>
- // #include <boost/type_index/runtime_reference_cast.hpp>
- #include <boost/type_index/runtime_cast.hpp>
- #include <boost/type_index/runtime_cast/boost_shared_ptr_cast.hpp>
- #include <boost/smart_ptr/make_shared.hpp>
- #include <boost/core/lightweight_test.hpp>
- #if !defined(BOOST_NO_CXX11_SMART_PTR)
- # include <boost/type_index/runtime_cast/std_shared_ptr_cast.hpp>
- #endif
- // Classes include a member variable "name" with the
- // name of the class hard coded so we can be sure that
- // the pointer offsets are all working, since we're doing
- // a cast from void* at some point.
- #define IMPLEMENT_CLASS(type_name) \
- type_name() : name( #type_name ) {} \
- std::string name;
- struct base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST(BOOST_TYPE_INDEX_NO_BASE_CLASS)
- IMPLEMENT_CLASS(base)
- };
- struct single_derived : base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(single_derived)
- };
- struct base1 {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST(BOOST_TYPE_INDEX_NO_BASE_CLASS)
- IMPLEMENT_CLASS(base1)
- };
- struct base2 {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST(BOOST_TYPE_INDEX_NO_BASE_CLASS)
- IMPLEMENT_CLASS(base2)
- };
- struct multiple_derived : base1, base2 {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base1)(base2))
- IMPLEMENT_CLASS(multiple_derived)
- };
- struct baseV1 : virtual base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(baseV1)
- };
- struct baseV2 : virtual base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(baseV2)
- };
- struct multiple_virtual_derived : baseV1, baseV2 {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((baseV1)(baseV2))
- IMPLEMENT_CLASS(multiple_virtual_derived)
- };
- struct unrelated {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST(BOOST_TYPE_INDEX_NO_BASE_CLASS)
- IMPLEMENT_CLASS(unrelated)
- };
- struct unrelated_with_base : base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(unrelated_with_base)
- };
- struct unrelatedV1 : virtual base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(unrelatedV1)
- };
- struct level1_a : base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(level1_a)
- };
- struct level1_b : base {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((base))
- IMPLEMENT_CLASS(level1_b)
- };
- struct level2 : level1_a, level1_b {
- BOOST_TYPE_INDEX_IMPLEMENT_RUNTIME_CAST((level1_a)(level1_b))
- IMPLEMENT_CLASS(level2)
- };
- struct reg_base {
- BOOST_TYPE_INDEX_REGISTER_RUNTIME_CLASS(BOOST_TYPE_INDEX_NO_BASE_CLASS)
- };
- struct reg_derived : reg_base {
- BOOST_TYPE_INDEX_REGISTER_RUNTIME_CLASS((reg_base))
- };
- void no_base()
- {
- using namespace boost::typeindex;
- base b;
- base* b2 = runtime_pointer_cast<base>(&b);
- BOOST_TEST_NE(b2, (base*)NULL);
- BOOST_TEST_EQ(b2->name, "base");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(&b), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<single_derived>(&b), (single_derived*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelatedV1>(&b), (unrelatedV1*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated_with_base>(&b), (unrelated_with_base*)NULL);
- }
- void single_base()
- {
- using namespace boost::typeindex;
- single_derived d;
- base* b = &d;
- single_derived* d2 = runtime_pointer_cast<single_derived>(b);
- BOOST_TEST_NE(d2, (single_derived*)NULL);
- BOOST_TEST_EQ(d2->name, "single_derived");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(&d), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(b), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated_with_base>(b), (unrelated_with_base*)NULL);
- }
- void multiple_base()
- {
- using namespace boost::typeindex;
- multiple_derived d;
- base1* b1 = &d;
- multiple_derived* d2 = runtime_pointer_cast<multiple_derived>(b1);
- BOOST_TEST_NE(d2, (multiple_derived*)NULL);
- BOOST_TEST_EQ(d2->name, "multiple_derived");
- base2* b2 = runtime_pointer_cast<base2>(b1);
- BOOST_TEST_NE(b2, (base2*)NULL);
- BOOST_TEST_EQ(b2->name, "base2");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(&d), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(b1), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated_with_base>(b1), (unrelated_with_base*)NULL);
- }
- void virtual_base()
- {
- using namespace boost::typeindex;
- multiple_virtual_derived d;
- base* b = &d;
- multiple_virtual_derived* d2 = runtime_pointer_cast<multiple_virtual_derived>(b);
- baseV1* bv1 = runtime_pointer_cast<baseV1>(b);
- baseV2* bv2 = runtime_pointer_cast<baseV2>(b);
- BOOST_TEST_NE(d2, (multiple_virtual_derived*)NULL);
- BOOST_TEST_EQ(d2->name, "multiple_virtual_derived");
- BOOST_TEST_NE(bv1, (baseV1*)NULL);
- BOOST_TEST_EQ(bv1->name, "baseV1");
- BOOST_TEST_NE(bv2, (baseV2*)NULL);
- BOOST_TEST_EQ(bv2->name, "baseV2");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(b), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(&d), (unrelated*)NULL);
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated_with_base>(b), (unrelated_with_base*)NULL);
- }
- void pointer_interface()
- {
- using namespace boost::typeindex;
- single_derived d;
- base* b = &d;
- single_derived* d2 = runtime_cast<single_derived*>(b);
- BOOST_TEST_NE(d2, (single_derived*)NULL);
- BOOST_TEST_EQ(d2->name, "single_derived");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(b), (unrelated*)NULL);
- }
- void reference_interface()
- {
- using namespace boost::typeindex;
- single_derived d;
- base& b = d;
- single_derived& d2 = runtime_cast<single_derived&>(b);
- BOOST_TEST_EQ(d2.name, "single_derived");
- try {
- unrelated& u = runtime_cast<unrelated&>(b);
- (void)u;
- BOOST_TEST(!"should throw bad_runtime_cast");
- }
- catch(boost::typeindex::bad_runtime_cast&) {
- }
- catch(...) {
- BOOST_TEST(!"should throw bad_runtime_cast");
- }
- }
- void const_pointer_interface()
- {
- using namespace boost::typeindex;
- const single_derived d;
- base const* b = &d;
- single_derived const* d2 = runtime_cast<single_derived const*>(b);
- BOOST_TEST_NE(d2, (single_derived*)NULL);
- BOOST_TEST_EQ(d2->name, "single_derived");
- BOOST_TEST_EQ(runtime_pointer_cast<unrelated>(b), (unrelated*)NULL);
- }
- void const_reference_interface()
- {
- using namespace boost::typeindex;
- const single_derived d;
- base const& b = d;
- single_derived const& d2 = runtime_cast<single_derived const&>(b);
- BOOST_TEST_EQ(d2.name, "single_derived");
- try {
- unrelated const& u = runtime_cast<unrelated const&>(b);
- (void)u;
- BOOST_TEST(!"should throw bad_runtime_cast");
- }
- catch(boost::typeindex::bad_runtime_cast&) {
- }
- catch(...) {
- BOOST_TEST(!"should throw bad_runtime_cast");
- }
- }
- void diamond_non_virtual()
- {
- using namespace boost::typeindex;
- level2 inst;
- level1_a* l1a = &inst;
- base* b1 = l1a;
- level1_b* l1_b = runtime_cast<level1_b*>(b1);
- BOOST_TEST_NE(l1_b, (level1_b*)NULL);
- BOOST_TEST_EQ(l1_b->name, "level1_b");
- }
- void boost_shared_ptr()
- {
- using namespace boost::typeindex;
- boost::shared_ptr<single_derived> d = boost::make_shared<single_derived>();
- boost::shared_ptr<base> b = d;
- boost::shared_ptr<single_derived> d2 = runtime_pointer_cast<single_derived>(b);
- BOOST_TEST_NE(d2, boost::shared_ptr<single_derived>());
- BOOST_TEST_EQ(d2->name, "single_derived");
- }
- void std_shared_ptr()
- {
- #if !defined(BOOST_NO_CXX11_SMART_PTR)
- using namespace boost::typeindex;
- std::shared_ptr<single_derived> d = std::make_shared<single_derived>();
- std::shared_ptr<base> b = d;
- std::shared_ptr<single_derived> d2 = runtime_pointer_cast<single_derived>(b);
- BOOST_TEST_NE(d2, std::shared_ptr<single_derived>());
- BOOST_TEST_EQ(d2->name, "single_derived");
- #endif
- }
- void register_runtime_class()
- {
- using namespace boost::typeindex;
- reg_derived rd;
- reg_base* rb = &rd;
- reg_derived* prd = runtime_pointer_cast<reg_derived>(rb);
- BOOST_TEST_NE(prd, (reg_derived*)NULL);
- BOOST_TEST_EQ(type_id_runtime(*prd), type_id<reg_derived>());
- }
- int main() {
- no_base();
- single_derived();
- multiple_base();
- virtual_base();
- pointer_interface();
- reference_interface();
- const_pointer_interface();
- const_reference_interface();
- diamond_non_virtual();
- boost_shared_ptr();
- std_shared_ptr();
- register_runtime_class();
- return boost::report_errors();
- }
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