1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
// Copyright (c) 2018-2025 Jean-Louis Leroy
// 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 <iostream>
#include <string>
#include <boost/openmethod/default_registry.hpp>
namespace bom = boost::openmethod;
struct test_registry : bom::default_registry::without<
bom::policies::vptr, bom::policies::type_hash> {};
#define BOOST_OPENMETHOD_DEFAULT_REGISTRY test_registry
#include <boost/openmethod.hpp>
#include <boost/openmethod/inplace_vptr.hpp>
#include <boost/openmethod/interop/std_shared_ptr.hpp>
#include <boost/openmethod/initialize.hpp>
#define BOOST_TEST_MODULE intrusive
#include <boost/test/unit_test.hpp>
namespace bom = boost::openmethod;
using bom::virtual_;
struct Animal : bom::inplace_vptr_base<Animal> {
explicit Animal(std::ostream& os);
~Animal();
std::ostream& os;
};
struct Cat : Animal, bom::inplace_vptr_derived<Cat, Animal> {
explicit Cat(std::ostream& os);
~Cat();
};
struct Pet : bom::inplace_vptr_base<Pet> {
explicit Pet(std::ostream& os);
~Pet();
std::string name;
std::ostream& os;
};
struct DomesticCat : Cat,
Pet,
bom::inplace_vptr_derived<DomesticCat, Cat, Pet> {
explicit DomesticCat(std::ostream& os);
~DomesticCat();
};
BOOST_OPENMETHOD(
speak, (virtual_<const Animal&> animal, std::ostream& os), void);
BOOST_OPENMETHOD(describe, (virtual_<const Pet&> pet, std::ostream& os), void);
BOOST_OPENMETHOD(
meet,
(virtual_<std::shared_ptr<Animal>>,
virtual_<const std::shared_ptr<Animal>&>, std::ostream& os),
void);
BOOST_OPENMETHOD_OVERRIDE(
meet,
(std::shared_ptr<Animal>, const std::shared_ptr<Animal>&, std::ostream& os),
void) {
os << "ignore\n";
}
Animal::Animal(std::ostream& os) : os(os) {
speak(*this, os);
}
Animal::~Animal() {
speak(*this, os);
}
Cat::Cat(std::ostream& os) : Animal(os) {
speak(*this, os);
}
Cat::~Cat() {
speak(*this, os);
}
Pet::Pet(std::ostream& os) : os(os) {
describe(*this, os);
}
Pet::~Pet() {
describe(*this, os);
}
DomesticCat::DomesticCat(std::ostream& os) : Cat(os), Pet(os) {
name = "Felix";
describe(*this, os);
}
DomesticCat::~DomesticCat() {
describe(*this, Cat::os);
}
BOOST_OPENMETHOD_OVERRIDE(speak, (const Animal&, std::ostream& os), void) {
os << "???\n";
}
BOOST_OPENMETHOD_OVERRIDE(speak, (const Cat&, std::ostream& os), void) {
os << "meow\n";
}
BOOST_OPENMETHOD_OVERRIDE(describe, (const Pet&, std::ostream& os), void) {
os << "I am a pet\n";
}
BOOST_OPENMETHOD_OVERRIDE(
describe, (const DomesticCat& pet, std::ostream& os), void) {
os << "I am " << pet.name << " the cat\n";
}
// Check that we pick one of the vptrs in presence of MI, dodging ambiguity
// issues.
BOOST_OPENMETHOD(
cat_influencer, (virtual_<const DomesticCat&> cat, std::ostream& os), void);
BOOST_OPENMETHOD_OVERRIDE(
cat_influencer, (const DomesticCat& cat, std::ostream& os), void) {
os << "Follow " << cat.name << " the cat on YouTube\n";
}
BOOST_AUTO_TEST_CASE(intrusive_mode) {
bom::initialize();
std::shared_ptr<DomesticCat> cat;
std::ostringstream cd_output;
{
std::ostringstream output;
cat = std::make_shared<DomesticCat>(cd_output);
BOOST_TEST(
cd_output.str() ==
"???\n"
"meow\n"
"I am a pet\n"
"I am Felix the cat\n");
}
{
std::ostringstream output;
describe(*cat, output);
BOOST_TEST(output.str() == "I am Felix the cat\n");
}
{
std::ostringstream output;
cat_influencer(*cat, output);
BOOST_TEST(output.str() == "Follow Felix the cat on YouTube\n");
}
{
cd_output.str("");
cat.reset();
BOOST_TEST(
cd_output.str() ==
"I am Felix the cat\n"
"I am a pet\n"
"meow\n"
"???\n");
}
{
auto felix = std::make_shared<Cat>(cd_output),
sylvester = std::make_shared<Cat>(cd_output);
std::ostringstream output;
meet(felix, sylvester, output);
BOOST_TEST(output.str() == "ignore\n");
}
}
struct indirect_policy : test_registry::with<bom::policies::indirect_vptr> {};
struct Indirect : bom::inplace_vptr_base<Indirect, indirect_policy> {};
BOOST_OPENMETHOD(whatever, (virtual_<Indirect&>), void, indirect_policy);
BOOST_OPENMETHOD_OVERRIDE(whatever, (Indirect&), void) {
}
BOOST_AUTO_TEST_CASE(core_intrusive_vptr) {
bom::initialize<indirect_policy>();
Indirect i;
BOOST_TEST(
boost_openmethod_vptr(i, nullptr) ==
indirect_policy::static_vptr<Indirect>);
indirect_policy::static_vptr<Indirect> = nullptr;
BOOST_TEST(boost_openmethod_vptr(i, nullptr) == nullptr);
}
|
