1 | // Copyright 2019 Peter Dimov |
2 | // |
3 | // Distributed under the Boost Software License, Version 1.0. |
4 | // http://www.boost.org/LICENSE_1_0.txt |
5 | |
6 | #include <boost/endian/conversion.hpp> |
7 | #include <boost/core/lightweight_test.hpp> |
8 | #include <boost/config.hpp> |
9 | #include <boost/cstdint.hpp> |
10 | #include <cstddef> |
11 | #include <ostream> |
12 | #include <iomanip> |
13 | |
14 | class byte_span |
15 | { |
16 | private: |
17 | |
18 | unsigned char const * p_; |
19 | std::size_t n_; |
20 | |
21 | public: |
22 | |
23 | byte_span( unsigned char const * p, std::size_t n ): p_( p ), n_( n ) |
24 | { |
25 | } |
26 | |
27 | template<std::size_t N> explicit byte_span( unsigned char const (&a)[ N ] ): p_( a ), n_( N ) |
28 | { |
29 | } |
30 | |
31 | bool operator==( byte_span const& r ) const |
32 | { |
33 | if( n_ != r.n_ ) return false; |
34 | |
35 | for( std::size_t i = 0; i < n_; ++i ) |
36 | { |
37 | if( p_[ i ] != r.p_[ i ] ) return false; |
38 | } |
39 | |
40 | return true; |
41 | } |
42 | |
43 | friend std::ostream& operator<<( std::ostream& os, byte_span s ) |
44 | { |
45 | if( s.n_ == 0 ) return os; |
46 | |
47 | os << std::hex << std::setfill( '0' ) << std::uppercase; |
48 | |
49 | os << std::setw( 2 ) << +s.p_[ 0 ]; |
50 | |
51 | for( std::size_t i = 1; i < s.n_; ++i ) |
52 | { |
53 | os << ':' << std::setw( 2 ) << +s.p_[ i ]; |
54 | } |
55 | |
56 | os << std::dec << std::setfill( ' ' ) << std::nouppercase;; |
57 | |
58 | return os; |
59 | } |
60 | }; |
61 | |
62 | template<class T> void test_1() |
63 | { |
64 | { |
65 | unsigned char v[] = { 0xAA, 0xAA }; |
66 | |
67 | boost::endian::endian_store<T, 1, boost::endian::order::little>( v, 0x01 ); |
68 | |
69 | unsigned char w[] = { 0x01, 0xAA }; |
70 | |
71 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
72 | } |
73 | |
74 | { |
75 | unsigned char v[] = { 0xAA, 0xAA }; |
76 | |
77 | boost::endian::endian_store<T, 1, boost::endian::order::big>( v, 0x01 ); |
78 | |
79 | unsigned char w[] = { 0x01, 0xAA }; |
80 | |
81 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
82 | } |
83 | } |
84 | |
85 | template<class T> void test_2() |
86 | { |
87 | { |
88 | unsigned char v[] = { 0xAA, 0xAA, 0xAA }; |
89 | |
90 | boost::endian::endian_store<T, 2, boost::endian::order::little>( v, 0x0102 ); |
91 | |
92 | unsigned char w[] = { 0x02, 0x01, 0xAA }; |
93 | |
94 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
95 | } |
96 | |
97 | { |
98 | unsigned char v[] = { 0xAA, 0xAA, 0xAA }; |
99 | |
100 | boost::endian::endian_store<T, 2, boost::endian::order::big>( v, 0x0102 ); |
101 | |
102 | unsigned char w[] = { 0x01, 0x02, 0xAA }; |
103 | |
104 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
105 | } |
106 | } |
107 | |
108 | template<class T> void test_3() |
109 | { |
110 | { |
111 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA }; |
112 | |
113 | boost::endian::endian_store<T, 3, boost::endian::order::little>( v, 0x010203 ); |
114 | |
115 | unsigned char w[] = { 0x03, 0x02, 0x01, 0xAA }; |
116 | |
117 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
118 | } |
119 | |
120 | { |
121 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA }; |
122 | |
123 | boost::endian::endian_store<T, 3, boost::endian::order::big>( v, 0x010203 ); |
124 | |
125 | unsigned char w[] = { 0x01, 0x02, 0x03, 0xAA }; |
126 | |
127 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
128 | } |
129 | } |
130 | |
131 | template<class T> void test_4() |
132 | { |
133 | { |
134 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
135 | |
136 | boost::endian::endian_store<T, 4, boost::endian::order::little>( v, 0x01020304 ); |
137 | |
138 | unsigned char w[] = { 0x04, 0x03, 0x02, 0x01, 0xAA }; |
139 | |
140 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
141 | } |
142 | |
143 | { |
144 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
145 | |
146 | boost::endian::endian_store<T, 4, boost::endian::order::big>( v, 0x01020304 ); |
147 | |
148 | unsigned char w[] = { 0x01, 0x02, 0x03, 0x04, 0xAA }; |
149 | |
150 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
151 | } |
152 | } |
153 | |
154 | template<class T> void test_5() |
155 | { |
156 | { |
157 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
158 | |
159 | boost::endian::endian_store<T, 5, boost::endian::order::little>( v, 0x0102030405 ); |
160 | |
161 | unsigned char w[] = { 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA }; |
162 | |
163 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
164 | } |
165 | |
166 | { |
167 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
168 | |
169 | boost::endian::endian_store<T, 5, boost::endian::order::big>( v, 0x0102030405 ); |
170 | |
171 | unsigned char w[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0xAA }; |
172 | |
173 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
174 | } |
175 | } |
176 | |
177 | template<class T> void test_6() |
178 | { |
179 | { |
180 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
181 | |
182 | boost::endian::endian_store<T, 6, boost::endian::order::little>( v, 0x010203040506 ); |
183 | |
184 | unsigned char w[] = { 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA }; |
185 | |
186 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
187 | } |
188 | |
189 | { |
190 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
191 | |
192 | boost::endian::endian_store<T, 6, boost::endian::order::big>( v, 0x010203040506 ); |
193 | |
194 | unsigned char w[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0xAA }; |
195 | |
196 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
197 | } |
198 | } |
199 | |
200 | template<class T> void test_7() |
201 | { |
202 | { |
203 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
204 | |
205 | boost::endian::endian_store<T, 7, boost::endian::order::little>( v, 0x01020304050607 ); |
206 | |
207 | unsigned char w[] = { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA }; |
208 | |
209 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
210 | } |
211 | |
212 | { |
213 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
214 | |
215 | boost::endian::endian_store<T, 7, boost::endian::order::big>( v, 0x01020304050607 ); |
216 | |
217 | unsigned char w[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xAA }; |
218 | |
219 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
220 | } |
221 | } |
222 | |
223 | template<class T> void test_8() |
224 | { |
225 | { |
226 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
227 | |
228 | boost::endian::endian_store<T, 8, boost::endian::order::little>( v, 0x0102030405060708 ); |
229 | |
230 | unsigned char w[] = { 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0xAA }; |
231 | |
232 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
233 | } |
234 | |
235 | { |
236 | unsigned char v[] = { 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA }; |
237 | |
238 | boost::endian::endian_store<T, 8, boost::endian::order::big>( v, 0x0102030405060708 ); |
239 | |
240 | unsigned char w[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0xAA }; |
241 | |
242 | BOOST_TEST_EQ( byte_span( v ), byte_span( w ) ); |
243 | } |
244 | } |
245 | |
246 | int main() |
247 | { |
248 | // 1 |
249 | |
250 | test_1<boost::int8_t>(); |
251 | test_1<boost::uint8_t>(); |
252 | |
253 | test_1<boost::int16_t>(); |
254 | test_1<boost::uint16_t>(); |
255 | |
256 | test_1<boost::int32_t>(); |
257 | test_1<boost::uint32_t>(); |
258 | |
259 | test_1<boost::int64_t>(); |
260 | test_1<boost::uint64_t>(); |
261 | |
262 | // 2 |
263 | |
264 | test_2<boost::int16_t>(); |
265 | test_2<boost::uint16_t>(); |
266 | |
267 | test_2<boost::int32_t>(); |
268 | test_2<boost::uint32_t>(); |
269 | |
270 | test_2<boost::int64_t>(); |
271 | test_2<boost::uint64_t>(); |
272 | |
273 | // 3 |
274 | |
275 | test_3<boost::int32_t>(); |
276 | test_3<boost::uint32_t>(); |
277 | |
278 | test_3<boost::int64_t>(); |
279 | test_3<boost::uint64_t>(); |
280 | |
281 | // 4 |
282 | |
283 | test_4<boost::int32_t>(); |
284 | test_4<boost::uint32_t>(); |
285 | |
286 | test_4<boost::int64_t>(); |
287 | test_4<boost::uint64_t>(); |
288 | |
289 | // 5 |
290 | |
291 | test_5<boost::int64_t>(); |
292 | test_5<boost::uint64_t>(); |
293 | |
294 | // 6 |
295 | |
296 | test_6<boost::int64_t>(); |
297 | test_6<boost::uint64_t>(); |
298 | |
299 | // 7 |
300 | |
301 | test_7<boost::int64_t>(); |
302 | test_7<boost::uint64_t>(); |
303 | |
304 | // 8 |
305 | |
306 | test_8<boost::int64_t>(); |
307 | test_8<boost::uint64_t>(); |
308 | |
309 | return boost::report_errors(); |
310 | } |
311 | |