// cast_tests.cpp -- The Boost Lambda Library ------------------ // // Copyright (C) 2000-2003 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) // Copyright (C) 2000-2003 Gary Powell (powellg@amazon.com) // // 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) // // For more information, see www.boost.org // ----------------------------------------------------------------------- #include #include "boost/lambda/lambda.hpp" #include "boost/lambda/casts.hpp" #include using namespace boost::lambda; using namespace std; class base { int x; public: virtual const char* class_name() const { return "const base"; } virtual const char* class_name() { return "base"; } virtual ~base() {} }; class derived : public base { int y[100]; public: virtual const char* class_name() const { return "const derived"; } virtual const char* class_name() { return "derived"; } }; void do_test() { derived *p_derived = new derived; base *p_base = new base; base *b = NULL; derived *d = NULL; (var(b) = ll_static_cast(p_derived))(); (var(d) = ll_static_cast(b))(); BOOST_TEST_CSTR_EQ(b->class_name(), "derived"); BOOST_TEST_CSTR_EQ(d->class_name(), "derived"); (var(b) = ll_dynamic_cast(b))(); BOOST_TEST_NE(b, static_cast(NULL)); BOOST_TEST_CSTR_EQ(b->class_name(), "derived"); (var(d) = ll_dynamic_cast(p_base))(); BOOST_TEST_EQ(d, static_cast(NULL)); const derived* p_const_derived = p_derived; BOOST_TEST_CSTR_EQ(p_const_derived->class_name(), "const derived"); (var(d) = ll_const_cast(p_const_derived))(); BOOST_TEST_CSTR_EQ(d->class_name(), "derived"); int i = 10; char* cp = reinterpret_cast(&i); int* ip; (var(ip) = ll_reinterpret_cast(cp))(); BOOST_TEST_EQ(*ip, 10); // typeid BOOST_TEST_CSTR_EQ(ll_typeid(d)().name(), typeid(d).name()); // sizeof BOOST_TEST_EQ(ll_sizeof(_1)(p_derived), sizeof(p_derived)); BOOST_TEST_EQ(ll_sizeof(_1)(*p_derived), sizeof(*p_derived)); BOOST_TEST_EQ(ll_sizeof(_1)(p_base), sizeof(p_base)); BOOST_TEST_EQ(ll_sizeof(_1)(*p_base), sizeof(*p_base)); int an_array[100]; BOOST_TEST_EQ(ll_sizeof(_1)(an_array), 100 * sizeof(int)); delete p_derived; delete p_base; } int main() { do_test(); return boost::report_errors(); }