1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <algorithm> 11 12 // template<InputIterator InIter, class OutIter> 13 // requires OutputIterator<OutIter, RvalueOf<InIter::value_type>::type> 14 // && EqualityComparable<InIter::value_type> 15 // && HasAssign<InIter::value_type, InIter::reference> 16 // && Constructible<InIter::value_type, InIter::reference> 17 // constexpr OutIter // constexpr after C++17 18 // unique_copy(InIter first, InIter last, OutIter result); 19 20 #include <algorithm> 21 #include <cassert> 22 23 #include "test_macros.h" 24 #include "test_iterators.h" 25 26 #if TEST_STD_VER > 17 27 TEST_CONSTEXPR bool test_constexpr() { 28 int ia[] = {0, 1, 2, 2, 4}; 29 int ib[] = {0, 0, 0, 0, 0}; 30 const int expected[] = {0, 1, 2, 4}; 31 32 auto it = std::unique_copy(std::begin(ia), std::end(ia), std::begin(ib)); 33 return it == (std::begin(ib) + std::size(expected)) 34 && *it == 0 // don't overwrite final value in output 35 && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected)) 36 ; 37 } 38 #endif 39 40 template <class InIter, class OutIter> 41 void 42 test() 43 { 44 const int ia[] = {0}; 45 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 46 int ja[sa] = {-1}; 47 OutIter r = std::unique_copy(InIter(ia), InIter(ia+sa), OutIter(ja)); 48 assert(base(r) == ja + sa); 49 assert(ja[0] == 0); 50 51 const int ib[] = {0, 1}; 52 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 53 int jb[sb] = {-1}; 54 r = std::unique_copy(InIter(ib), InIter(ib+sb), OutIter(jb)); 55 assert(base(r) == jb + sb); 56 assert(jb[0] == 0); 57 assert(jb[1] == 1); 58 59 const int ic[] = {0, 0}; 60 const unsigned sc = sizeof(ic)/sizeof(ic[0]); 61 int jc[sc] = {-1}; 62 r = std::unique_copy(InIter(ic), InIter(ic+sc), OutIter(jc)); 63 assert(base(r) == jc + 1); 64 assert(jc[0] == 0); 65 66 const int id[] = {0, 0, 1}; 67 const unsigned sd = sizeof(id)/sizeof(id[0]); 68 int jd[sd] = {-1}; 69 r = std::unique_copy(InIter(id), InIter(id+sd), OutIter(jd)); 70 assert(base(r) == jd + 2); 71 assert(jd[0] == 0); 72 assert(jd[1] == 1); 73 74 const int ie[] = {0, 0, 1, 0}; 75 const unsigned se = sizeof(ie)/sizeof(ie[0]); 76 int je[se] = {-1}; 77 r = std::unique_copy(InIter(ie), InIter(ie+se), OutIter(je)); 78 assert(base(r) == je + 3); 79 assert(je[0] == 0); 80 assert(je[1] == 1); 81 assert(je[2] == 0); 82 83 const int ig[] = {0, 0, 1, 1}; 84 const unsigned sg = sizeof(ig)/sizeof(ig[0]); 85 int jg[sg] = {-1}; 86 r = std::unique_copy(InIter(ig), InIter(ig+sg), OutIter(jg)); 87 assert(base(r) == jg + 2); 88 assert(jg[0] == 0); 89 assert(jg[1] == 1); 90 91 const int ih[] = {0, 1, 1}; 92 const unsigned sh = sizeof(ih)/sizeof(ih[0]); 93 int jh[sh] = {-1}; 94 r = std::unique_copy(InIter(ih), InIter(ih+sh), OutIter(jh)); 95 assert(base(r) == jh + 2); 96 assert(jh[0] == 0); 97 assert(jh[1] == 1); 98 99 const int ii[] = {0, 1, 1, 1, 2, 2, 2}; 100 const unsigned si = sizeof(ii)/sizeof(ii[0]); 101 int ji[si] = {-1}; 102 r = std::unique_copy(InIter(ii), InIter(ii+si), OutIter(ji)); 103 assert(base(r) == ji + 3); 104 assert(ji[0] == 0); 105 assert(ji[1] == 1); 106 assert(ji[2] == 2); 107 } 108 109 int main() 110 { 111 test<input_iterator<const int*>, output_iterator<int*> >(); 112 test<input_iterator<const int*>, forward_iterator<int*> >(); 113 test<input_iterator<const int*>, bidirectional_iterator<int*> >(); 114 test<input_iterator<const int*>, random_access_iterator<int*> >(); 115 test<input_iterator<const int*>, int*>(); 116 117 test<forward_iterator<const int*>, output_iterator<int*> >(); 118 test<forward_iterator<const int*>, forward_iterator<int*> >(); 119 test<forward_iterator<const int*>, bidirectional_iterator<int*> >(); 120 test<forward_iterator<const int*>, random_access_iterator<int*> >(); 121 test<forward_iterator<const int*>, int*>(); 122 123 test<bidirectional_iterator<const int*>, output_iterator<int*> >(); 124 test<bidirectional_iterator<const int*>, forward_iterator<int*> >(); 125 test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >(); 126 test<bidirectional_iterator<const int*>, random_access_iterator<int*> >(); 127 test<bidirectional_iterator<const int*>, int*>(); 128 129 test<random_access_iterator<const int*>, output_iterator<int*> >(); 130 test<random_access_iterator<const int*>, forward_iterator<int*> >(); 131 test<random_access_iterator<const int*>, bidirectional_iterator<int*> >(); 132 test<random_access_iterator<const int*>, random_access_iterator<int*> >(); 133 test<random_access_iterator<const int*>, int*>(); 134 135 test<const int*, output_iterator<int*> >(); 136 test<const int*, forward_iterator<int*> >(); 137 test<const int*, bidirectional_iterator<int*> >(); 138 test<const int*, random_access_iterator<int*> >(); 139 test<const int*, int*>(); 140 141 #if TEST_STD_VER > 17 142 static_assert(test_constexpr()); 143 #endif 144 } 145
