move.cpp 20 KB

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  1. // Range v3 library
  2. //
  3. // Copyright Eric Niebler 2014-present
  4. //
  5. // Use, modification and distribution is subject to the
  6. // Boost Software License, Version 1.0. (See accompanying
  7. // file LICENSE_1_0.txt or copy at
  8. // http://www.boost.org/LICENSE_1_0.txt)
  9. //
  10. // Project home: https://github.com/ericniebler/range-v3
  11. //===----------------------------------------------------------------------===//
  12. //
  13. // The LLVM Compiler Infrastructure
  14. //
  15. // This file is dual licensed under the MIT and the University of Illinois Open
  16. // Source Licenses. See LICENSE.TXT for details.
  17. //
  18. //===----------------------------------------------------------------------===//
  19. #include <memory>
  20. #include <algorithm>
  21. #include <range/v3/core.hpp>
  22. #include <range/v3/algorithm/move.hpp>
  23. #include "../simple_test.hpp"
  24. #include "../test_utils.hpp"
  25. #include "../test_iterators.hpp"
  26. template<typename InIter, typename OutIter, typename Sent = InIter>
  27. void
  28. test()
  29. {
  30. {
  31. const int N = 1000;
  32. int ia[N];
  33. for(int i = 0; i < N; ++i)
  34. ia[i] = i;
  35. int ib[N] = {0};
  36. ranges::move_result<InIter, OutIter> r = ranges::move(InIter(ia), Sent(ia+N), OutIter(ib));
  37. CHECK(base(r.in) == ia+N);
  38. CHECK(base(r.out) == ib+N);
  39. for(int i = 0; i < N; ++i)
  40. CHECK(ia[i] == ib[i]);
  41. }
  42. {
  43. const int N = 1000;
  44. int ia[N];
  45. for(int i = 0; i < N; ++i)
  46. ia[i] = i;
  47. int ib[N] = {0};
  48. ranges::move_result<InIter, OutIter> r = ranges::move(as_lvalue(ranges::make_subrange(InIter(ia), Sent(ia+N))), OutIter(ib));
  49. CHECK(base(r.in) == ia+N);
  50. CHECK(base(r.out) == ib+N);
  51. for(int i = 0; i < N; ++i)
  52. CHECK(ia[i] == ib[i]);
  53. }
  54. }
  55. template<typename InIter, typename OutIter, typename Sent = InIter>
  56. constexpr bool test_constexpr()
  57. {
  58. {
  59. constexpr int N = 1000;
  60. int ia[N]{1};
  61. for(int i = 0; i < N; ++i)
  62. ia[i] = i;
  63. int ib[N] = {0};
  64. const auto r = ranges::move(InIter(ia), Sent(ia + N), OutIter(ib));
  65. if(base(r.in) != ia + N)
  66. {
  67. return false;
  68. }
  69. if(base(r.out) != ib + N)
  70. {
  71. return false;
  72. }
  73. for(int i = 0; i < N; ++i)
  74. if(ia[i] != ib[i])
  75. {
  76. return false;
  77. }
  78. }
  79. {
  80. constexpr int N = 1000;
  81. int ia[N]{1};
  82. for(int i = 0; i < N; ++i)
  83. ia[i] = i;
  84. int ib[N] = {0};
  85. const auto r = ranges::move(
  86. as_lvalue(ranges::make_subrange(InIter(ia), Sent(ia + N))), OutIter(ib));
  87. if(base(r.in) != ia + N)
  88. {
  89. return false;
  90. }
  91. if(base(r.out) != ib + N)
  92. {
  93. return false;
  94. }
  95. for(int i = 0; i < N; ++i)
  96. if(ia[i] != ib[i])
  97. {
  98. return false;
  99. }
  100. }
  101. return true;
  102. }
  103. struct S
  104. {
  105. std::unique_ptr<int> p;
  106. };
  107. template<typename InIter, typename OutIter, typename Sent = InIter>
  108. void
  109. test1()
  110. {
  111. {
  112. const int N = 100;
  113. std::unique_ptr<int> ia[N];
  114. for(int i = 0; i < N; ++i)
  115. ia[i].reset(new int(i));
  116. std::unique_ptr<int> ib[N];
  117. ranges::move_result<InIter, OutIter> r = ranges::move(InIter(ia), Sent(ia+N), OutIter(ib));
  118. CHECK(base(r.in) == ia+N);
  119. CHECK(base(r.out) == ib+N);
  120. for(int i = 0; i < N; ++i)
  121. {
  122. CHECK(ia[i].get() == nullptr);
  123. CHECK(*ib[i] == i);
  124. }
  125. }
  126. {
  127. const int N = 100;
  128. std::unique_ptr<int> ia[N];
  129. for(int i = 0; i < N; ++i)
  130. ia[i].reset(new int(i));
  131. std::unique_ptr<int> ib[N];
  132. ranges::move_result<InIter, OutIter> r = ranges::move(as_lvalue(ranges::make_subrange(InIter(ia), Sent(ia+N))), OutIter(ib));
  133. CHECK(base(r.in) == ia+N);
  134. CHECK(base(r.out) == ib+N);
  135. for(int i = 0; i < N; ++i)
  136. {
  137. CHECK(ia[i].get() == nullptr);
  138. CHECK(*ib[i] == i);
  139. }
  140. ranges::move(ib, ib+N, ia);
  141. auto r2 = ranges::move(ranges::make_subrange(InIter(ia), Sent(ia+N)), OutIter(ib));
  142. CHECK(base(r2.in) == ia+N);
  143. CHECK(base(r2.out) == ib+N);
  144. for(int i = 0; i < N; ++i)
  145. {
  146. CHECK(ia[i].get() == nullptr);
  147. CHECK(*ib[i] == i);
  148. }
  149. }
  150. }
  151. int main()
  152. {
  153. test<InputIterator<const int*>, OutputIterator<int*> >();
  154. test<InputIterator<const int*>, InputIterator<int*> >();
  155. test<InputIterator<const int*>, ForwardIterator<int*> >();
  156. test<InputIterator<const int*>, BidirectionalIterator<int*> >();
  157. test<InputIterator<const int*>, RandomAccessIterator<int*> >();
  158. test<InputIterator<const int*>, int*>();
  159. test<ForwardIterator<const int*>, OutputIterator<int*> >();
  160. test<ForwardIterator<const int*>, InputIterator<int*> >();
  161. test<ForwardIterator<const int*>, ForwardIterator<int*> >();
  162. test<ForwardIterator<const int*>, BidirectionalIterator<int*> >();
  163. test<ForwardIterator<const int*>, RandomAccessIterator<int*> >();
  164. test<ForwardIterator<const int*>, int*>();
  165. test<BidirectionalIterator<const int*>, OutputIterator<int*> >();
  166. test<BidirectionalIterator<const int*>, InputIterator<int*> >();
  167. test<BidirectionalIterator<const int*>, ForwardIterator<int*> >();
  168. test<BidirectionalIterator<const int*>, BidirectionalIterator<int*> >();
  169. test<BidirectionalIterator<const int*>, RandomAccessIterator<int*> >();
  170. test<BidirectionalIterator<const int*>, int*>();
  171. test<RandomAccessIterator<const int*>, OutputIterator<int*> >();
  172. test<RandomAccessIterator<const int*>, InputIterator<int*> >();
  173. test<RandomAccessIterator<const int*>, ForwardIterator<int*> >();
  174. test<RandomAccessIterator<const int*>, BidirectionalIterator<int*> >();
  175. test<RandomAccessIterator<const int*>, RandomAccessIterator<int*> >();
  176. test<RandomAccessIterator<const int*>, int*>();
  177. test<const int*, OutputIterator<int*> >();
  178. test<const int*, InputIterator<int*> >();
  179. test<const int*, ForwardIterator<int*> >();
  180. test<const int*, BidirectionalIterator<int*> >();
  181. test<const int*, RandomAccessIterator<int*> >();
  182. test<const int*, int*>();
  183. test<InputIterator<const int*>, OutputIterator<int*>, Sentinel<const int*>>();
  184. test<InputIterator<const int*>, InputIterator<int*>, Sentinel<const int*> >();
  185. test<InputIterator<const int*>, ForwardIterator<int*>, Sentinel<const int*> >();
  186. test<InputIterator<const int*>, BidirectionalIterator<int*>, Sentinel<const int*> >();
  187. test<InputIterator<const int*>, RandomAccessIterator<int*>, Sentinel<const int*> >();
  188. test<ForwardIterator<const int*>, OutputIterator<int*>, Sentinel<const int*> >();
  189. test<ForwardIterator<const int*>, InputIterator<int*>, Sentinel<const int*> >();
  190. test<ForwardIterator<const int*>, ForwardIterator<int*>, Sentinel<const int*> >();
  191. test<ForwardIterator<const int*>, BidirectionalIterator<int*>, Sentinel<const int*> >();
  192. test<ForwardIterator<const int*>, RandomAccessIterator<int*>, Sentinel<const int*> >();
  193. test<BidirectionalIterator<const int*>, OutputIterator<int*>, Sentinel<const int*> >();
  194. test<BidirectionalIterator<const int*>, InputIterator<int*>, Sentinel<const int*> >();
  195. test<BidirectionalIterator<const int*>, ForwardIterator<int*>, Sentinel<const int*> >();
  196. test<BidirectionalIterator<const int*>, BidirectionalIterator<int*>, Sentinel<const int*> >();
  197. test<BidirectionalIterator<const int*>, RandomAccessIterator<int*>, Sentinel<const int*> >();
  198. test<RandomAccessIterator<const int*>, OutputIterator<int*>, Sentinel<const int*> >();
  199. test<RandomAccessIterator<const int*>, InputIterator<int*>, Sentinel<const int*> >();
  200. test<RandomAccessIterator<const int*>, ForwardIterator<int*>, Sentinel<const int*> >();
  201. test<RandomAccessIterator<const int*>, BidirectionalIterator<int*>, Sentinel<const int*> >();
  202. test<RandomAccessIterator<const int*>, RandomAccessIterator<int*>, Sentinel<const int*> >();
  203. test1<InputIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*> >();
  204. test1<InputIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*> >();
  205. test1<InputIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*> >();
  206. test1<InputIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*> >();
  207. test1<InputIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*> >();
  208. test1<InputIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  209. test1<ForwardIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*> >();
  210. test1<ForwardIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*> >();
  211. test1<ForwardIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*> >();
  212. test1<ForwardIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*> >();
  213. test1<ForwardIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*> >();
  214. test1<ForwardIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  215. test1<BidirectionalIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*> >();
  216. test1<BidirectionalIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*> >();
  217. test1<BidirectionalIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*> >();
  218. test1<BidirectionalIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*> >();
  219. test1<BidirectionalIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*> >();
  220. test1<BidirectionalIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  221. test1<RandomAccessIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*> >();
  222. test1<RandomAccessIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*> >();
  223. test1<RandomAccessIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*> >();
  224. test1<RandomAccessIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*> >();
  225. test1<RandomAccessIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*> >();
  226. test1<RandomAccessIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  227. test1<std::unique_ptr<int>*, OutputIterator<std::unique_ptr<int>*> >();
  228. test1<std::unique_ptr<int>*, InputIterator<std::unique_ptr<int>*> >();
  229. test1<std::unique_ptr<int>*, ForwardIterator<std::unique_ptr<int>*> >();
  230. test1<std::unique_ptr<int>*, BidirectionalIterator<std::unique_ptr<int>*> >();
  231. test1<std::unique_ptr<int>*, RandomAccessIterator<std::unique_ptr<int>*> >();
  232. test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
  233. test1<InputIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  234. test1<InputIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  235. test1<InputIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  236. test1<InputIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  237. test1<InputIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  238. test1<InputIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  239. test1<ForwardIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  240. test1<ForwardIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  241. test1<ForwardIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  242. test1<ForwardIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  243. test1<ForwardIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  244. test1<ForwardIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  245. test1<BidirectionalIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  246. test1<BidirectionalIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  247. test1<BidirectionalIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  248. test1<BidirectionalIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  249. test1<BidirectionalIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  250. test1<BidirectionalIterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
  251. test1<RandomAccessIterator<std::unique_ptr<int>*>, OutputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  252. test1<RandomAccessIterator<std::unique_ptr<int>*>, InputIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  253. test1<RandomAccessIterator<std::unique_ptr<int>*>, ForwardIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  254. test1<RandomAccessIterator<std::unique_ptr<int>*>, BidirectionalIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  255. test1<RandomAccessIterator<std::unique_ptr<int>*>, RandomAccessIterator<std::unique_ptr<int>*>, Sentinel<std::unique_ptr<int>*> >();
  256. {
  257. STATIC_CHECK(test_constexpr<InputIterator<const int *>, OutputIterator<int *>>());
  258. STATIC_CHECK(test_constexpr<InputIterator<const int *>, InputIterator<int *>>());
  259. STATIC_CHECK(
  260. test_constexpr<InputIterator<const int *>, ForwardIterator<int *>>());
  261. STATIC_CHECK(
  262. test_constexpr<InputIterator<const int *>, BidirectionalIterator<int *>>());
  263. STATIC_CHECK(
  264. test_constexpr<InputIterator<const int *>, RandomAccessIterator<int *>>());
  265. STATIC_CHECK(test_constexpr<InputIterator<const int *>, int *>());
  266. STATIC_CHECK(
  267. test_constexpr<ForwardIterator<const int *>, OutputIterator<int *>>());
  268. STATIC_CHECK(
  269. test_constexpr<ForwardIterator<const int *>, InputIterator<int *>>());
  270. STATIC_CHECK(
  271. test_constexpr<ForwardIterator<const int *>, ForwardIterator<int *>>());
  272. STATIC_CHECK(
  273. test_constexpr<ForwardIterator<const int *>, BidirectionalIterator<int *>>());
  274. STATIC_CHECK(
  275. test_constexpr<ForwardIterator<const int *>, RandomAccessIterator<int *>>());
  276. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>, int *>());
  277. STATIC_CHECK(
  278. test_constexpr<BidirectionalIterator<const int *>, OutputIterator<int *>>());
  279. STATIC_CHECK(
  280. test_constexpr<BidirectionalIterator<const int *>, InputIterator<int *>>());
  281. STATIC_CHECK(
  282. test_constexpr<BidirectionalIterator<const int *>, ForwardIterator<int *>>());
  283. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  284. BidirectionalIterator<int *>>());
  285. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  286. RandomAccessIterator<int *>>());
  287. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>, int *>());
  288. STATIC_CHECK(
  289. test_constexpr<RandomAccessIterator<const int *>, OutputIterator<int *>>());
  290. STATIC_CHECK(
  291. test_constexpr<RandomAccessIterator<const int *>, InputIterator<int *>>());
  292. STATIC_CHECK(
  293. test_constexpr<RandomAccessIterator<const int *>, ForwardIterator<int *>>());
  294. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  295. BidirectionalIterator<int *>>());
  296. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  297. RandomAccessIterator<int *>>());
  298. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>, int *>());
  299. STATIC_CHECK(test_constexpr<const int *, OutputIterator<int *>>());
  300. STATIC_CHECK(test_constexpr<const int *, InputIterator<int *>>());
  301. STATIC_CHECK(test_constexpr<const int *, ForwardIterator<int *>>());
  302. STATIC_CHECK(test_constexpr<const int *, BidirectionalIterator<int *>>());
  303. STATIC_CHECK(test_constexpr<const int *, RandomAccessIterator<int *>>());
  304. STATIC_CHECK(test_constexpr<const int *, int *>());
  305. STATIC_CHECK(test_constexpr<InputIterator<const int *>,
  306. OutputIterator<int *>,
  307. Sentinel<const int *>>());
  308. STATIC_CHECK(test_constexpr<InputIterator<const int *>,
  309. InputIterator<int *>,
  310. Sentinel<const int *>>());
  311. STATIC_CHECK(test_constexpr<InputIterator<const int *>,
  312. ForwardIterator<int *>,
  313. Sentinel<const int *>>());
  314. STATIC_CHECK(test_constexpr<InputIterator<const int *>,
  315. BidirectionalIterator<int *>,
  316. Sentinel<const int *>>());
  317. STATIC_CHECK(test_constexpr<InputIterator<const int *>,
  318. RandomAccessIterator<int *>,
  319. Sentinel<const int *>>());
  320. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>,
  321. OutputIterator<int *>,
  322. Sentinel<const int *>>());
  323. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>,
  324. InputIterator<int *>,
  325. Sentinel<const int *>>());
  326. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>,
  327. ForwardIterator<int *>,
  328. Sentinel<const int *>>());
  329. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>,
  330. BidirectionalIterator<int *>,
  331. Sentinel<const int *>>());
  332. STATIC_CHECK(test_constexpr<ForwardIterator<const int *>,
  333. RandomAccessIterator<int *>,
  334. Sentinel<const int *>>());
  335. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  336. OutputIterator<int *>,
  337. Sentinel<const int *>>());
  338. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  339. InputIterator<int *>,
  340. Sentinel<const int *>>());
  341. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  342. ForwardIterator<int *>,
  343. Sentinel<const int *>>());
  344. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  345. BidirectionalIterator<int *>,
  346. Sentinel<const int *>>());
  347. STATIC_CHECK(test_constexpr<BidirectionalIterator<const int *>,
  348. RandomAccessIterator<int *>,
  349. Sentinel<const int *>>());
  350. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  351. OutputIterator<int *>,
  352. Sentinel<const int *>>());
  353. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  354. InputIterator<int *>,
  355. Sentinel<const int *>>());
  356. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  357. ForwardIterator<int *>,
  358. Sentinel<const int *>>());
  359. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  360. BidirectionalIterator<int *>,
  361. Sentinel<const int *>>());
  362. STATIC_CHECK(test_constexpr<RandomAccessIterator<const int *>,
  363. RandomAccessIterator<int *>,
  364. Sentinel<const int *>>());
  365. }
  366. return test_result();
  367. }