1 // cast_tests.cpp -- The Boost Lambda Library ------------------
2 //
3 // Copyright (C) 2000-2003 Jaakko Jarvi ([email protected])
4 // Copyright (C) 2000-2003 Gary Powell ([email protected])
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/core/lightweight_test.hpp>
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 const char* class_name() const { return "const base"; }
class_name()31 virtual const char* 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 const char* class_name() const { return "const derived"; }
class_name()39 virtual const char* class_name() { return "derived"; }
40 };
41
42
43
44
do_test()45 void do_test() {
46
47 derived *p_derived = new derived;
48 base *p_base = new base;
49
50 base *b = NULL;
51 derived *d = NULL;
52
53 (var(b) = ll_static_cast<base *>(p_derived))();
54 (var(d) = ll_static_cast<derived *>(b))();
55
56 BOOST_TEST_CSTR_EQ(b->class_name(), "derived");
57 BOOST_TEST_CSTR_EQ(d->class_name(), "derived");
58
59 (var(b) = ll_dynamic_cast<derived *>(b))();
60 BOOST_TEST_NE(b, static_cast<base *>(NULL));
61 BOOST_TEST_CSTR_EQ(b->class_name(), "derived");
62
63 (var(d) = ll_dynamic_cast<derived *>(p_base))();
64 BOOST_TEST_EQ(d, static_cast<derived *>(NULL));
65
66
67
68 const derived* p_const_derived = p_derived;
69
70 BOOST_TEST_CSTR_EQ(p_const_derived->class_name(), "const derived");
71 (var(d) = ll_const_cast<derived *>(p_const_derived))();
72 BOOST_TEST_CSTR_EQ(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_TEST_EQ(*ip, 10);
80
81
82 // typeid
83
84 BOOST_TEST_CSTR_EQ(ll_typeid(d)().name(), typeid(d).name());
85
86
87 // sizeof
88
89 BOOST_TEST_EQ(ll_sizeof(_1)(p_derived), sizeof(p_derived));
90 BOOST_TEST_EQ(ll_sizeof(_1)(*p_derived), sizeof(*p_derived));
91 BOOST_TEST_EQ(ll_sizeof(_1)(p_base), sizeof(p_base));
92 BOOST_TEST_EQ(ll_sizeof(_1)(*p_base), sizeof(*p_base));
93
94 int an_array[100];
95 BOOST_TEST_EQ(ll_sizeof(_1)(an_array), 100 * sizeof(int));
96
97 delete p_derived;
98 delete p_base;
99
100
101 }
102
main()103 int main()
104 {
105 do_test();
106 return boost::report_errors();
107 }
108