1 // cast_tests.cpp -- The Boost Lambda Library ------------------ 2 // 3 // Copyright (C) 2000-2003 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) 4 // Copyright (C) 2000-2003 Gary Powell (powellg@amazon.com) 5 // 6 // Distributed under the Boost Software License, Version 1.0. (See 7 // accompanying file LICENSE_1_0.txt or copy at 8 // http://www.boost.org/LICENSE_1_0.txt) 9 // 10 // For more information, see www.boost.org 11 12 // ----------------------------------------------------------------------- 13 14 15 #include <boost/test/minimal.hpp> // see "Header Implementation Option" 16 17 18 #include "boost/lambda/lambda.hpp" 19 20 #include "boost/lambda/casts.hpp" 21 22 #include <string> 23 24 using namespace boost::lambda; 25 using namespace std; 26 27 class base { 28 int x; 29 public: class_name() const30 virtual std::string class_name() const { return "const base"; } class_name()31 virtual std::string class_name() { return "base"; } ~base()32 virtual ~base() {} 33 }; 34 35 class derived : public base { 36 int y[100]; 37 public: class_name() const38 virtual std::string class_name() const { return "const derived"; } class_name()39 virtual std::string class_name() { return "derived"; } 40 }; 41 42 43 44 do_test()45void do_test() { 46 47 derived *p_derived = new derived; 48 base *p_base = new base; 49 50 base *b = 0; 51 derived *d = 0; 52 53 (var(b) = ll_static_cast<base *>(p_derived))(); 54 (var(d) = ll_static_cast<derived *>(b))(); 55 56 BOOST_CHECK(b->class_name() == "derived"); 57 BOOST_CHECK(d->class_name() == "derived"); 58 59 (var(b) = ll_dynamic_cast<derived *>(b))(); 60 BOOST_CHECK(b != 0); 61 BOOST_CHECK(b->class_name() == "derived"); 62 63 (var(d) = ll_dynamic_cast<derived *>(p_base))(); 64 BOOST_CHECK(d == 0); 65 66 67 68 const derived* p_const_derived = p_derived; 69 70 BOOST_CHECK(p_const_derived->class_name() == "const derived"); 71 (var(d) = ll_const_cast<derived *>(p_const_derived))(); 72 BOOST_CHECK(d->class_name() == "derived"); 73 74 int i = 10; 75 char* cp = reinterpret_cast<char*>(&i); 76 77 int* ip; 78 (var(ip) = ll_reinterpret_cast<int *>(cp))(); 79 BOOST_CHECK(*ip == 10); 80 81 82 // typeid 83 84 BOOST_CHECK(string(ll_typeid(d)().name()) == string(typeid(d).name())); 85 86 87 // sizeof 88 89 BOOST_CHECK(ll_sizeof(_1)(p_derived) == sizeof(p_derived)); 90 BOOST_CHECK(ll_sizeof(_1)(*p_derived) == sizeof(*p_derived)); 91 BOOST_CHECK(ll_sizeof(_1)(p_base) == sizeof(p_base)); 92 BOOST_CHECK(ll_sizeof(_1)(*p_base) == sizeof(*p_base)); 93 94 int an_array[100]; 95 BOOST_CHECK(ll_sizeof(_1)(an_array) == 100 * sizeof(int)); 96 97 delete p_derived; 98 delete p_base; 99 100 101 } 102 test_main(int,char * [])103int test_main(int, char *[]) { 104 105 do_test(); 106 return 0; 107 } 108