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<ForwardIterator Iter> 13 // requires OutputIterator<Iter, Iter::reference> 14 // && EqualityComparable<Iter::value_type> 15 // Iter 16 // unique(Iter first, Iter last); 17 18 #include <algorithm> 19 #include <cassert> 20 #include <memory> 21 22 #include "test_macros.h" 23 #include "test_iterators.h" 24 25 template <class Iter> 26 void 27 test() 28 { 29 int ia[] = {0}; 30 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 31 Iter r = std::unique(Iter(ia), Iter(ia+sa)); 32 assert(base(r) == ia + sa); 33 assert(ia[0] == 0); 34 35 int ib[] = {0, 1}; 36 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 37 r = std::unique(Iter(ib), Iter(ib+sb)); 38 assert(base(r) == ib + sb); 39 assert(ib[0] == 0); 40 assert(ib[1] == 1); 41 42 int ic[] = {0, 0}; 43 const unsigned sc = sizeof(ic)/sizeof(ic[0]); 44 r = std::unique(Iter(ic), Iter(ic+sc)); 45 assert(base(r) == ic + 1); 46 assert(ic[0] == 0); 47 48 int id[] = {0, 0, 1}; 49 const unsigned sd = sizeof(id)/sizeof(id[0]); 50 r = std::unique(Iter(id), Iter(id+sd)); 51 assert(base(r) == id + 2); 52 assert(id[0] == 0); 53 assert(id[1] == 1); 54 55 int ie[] = {0, 0, 1, 0}; 56 const unsigned se = sizeof(ie)/sizeof(ie[0]); 57 r = std::unique(Iter(ie), Iter(ie+se)); 58 assert(base(r) == ie + 3); 59 assert(ie[0] == 0); 60 assert(ie[1] == 1); 61 assert(ie[2] == 0); 62 63 int ig[] = {0, 0, 1, 1}; 64 const unsigned sg = sizeof(ig)/sizeof(ig[0]); 65 r = std::unique(Iter(ig), Iter(ig+sg)); 66 assert(base(r) == ig + 2); 67 assert(ig[0] == 0); 68 assert(ig[1] == 1); 69 70 int ih[] = {0, 1, 1}; 71 const unsigned sh = sizeof(ih)/sizeof(ih[0]); 72 r = std::unique(Iter(ih), Iter(ih+sh)); 73 assert(base(r) == ih + 2); 74 assert(ih[0] == 0); 75 assert(ih[1] == 1); 76 77 int ii[] = {0, 1, 1, 1, 2, 2, 2}; 78 const unsigned si = sizeof(ii)/sizeof(ii[0]); 79 r = std::unique(Iter(ii), Iter(ii+si)); 80 assert(base(r) == ii + 3); 81 assert(ii[0] == 0); 82 assert(ii[1] == 1); 83 assert(ii[2] == 2); 84 } 85 86 #if TEST_STD_VER >= 11 87 88 struct do_nothing 89 { 90 void operator()(void*) const {} 91 }; 92 93 typedef std::unique_ptr<int, do_nothing> Ptr; 94 95 template <class Iter> 96 void 97 test1() 98 { 99 int one = 1; 100 int two = 2; 101 Ptr ia[1]; 102 const unsigned sa = sizeof(ia)/sizeof(ia[0]); 103 Iter r = std::unique(Iter(ia), Iter(ia+sa)); 104 assert(base(r) == ia + sa); 105 assert(ia[0] == 0); 106 107 Ptr ib[2]; 108 ib[1].reset(&one); 109 const unsigned sb = sizeof(ib)/sizeof(ib[0]); 110 r = std::unique(Iter(ib), Iter(ib+sb)); 111 assert(base(r) == ib + sb); 112 assert(ib[0] == 0); 113 assert(*ib[1] == 1); 114 115 Ptr ic[2]; 116 const unsigned sc = sizeof(ic)/sizeof(ic[0]); 117 r = std::unique(Iter(ic), Iter(ic+sc)); 118 assert(base(r) == ic + 1); 119 assert(ic[0] == 0); 120 121 Ptr id[3]; 122 id[2].reset(&one); 123 const unsigned sd = sizeof(id)/sizeof(id[0]); 124 r = std::unique(Iter(id), Iter(id+sd)); 125 assert(base(r) == id + 2); 126 assert(id[0] == 0); 127 assert(*id[1] == 1); 128 129 Ptr ie[4]; 130 ie[2].reset(&one); 131 const unsigned se = sizeof(ie)/sizeof(ie[0]); 132 r = std::unique(Iter(ie), Iter(ie+se)); 133 assert(base(r) == ie + 3); 134 assert(ie[0] == 0); 135 assert(*ie[1] == 1); 136 assert(ie[2] == 0); 137 138 Ptr ig[4]; 139 ig[2].reset(&one); 140 ig[3].reset(&one); 141 const unsigned sg = sizeof(ig)/sizeof(ig[0]); 142 r = std::unique(Iter(ig), Iter(ig+sg)); 143 assert(base(r) == ig + 2); 144 assert(ig[0] == 0); 145 assert(*ig[1] == 1); 146 147 Ptr ih[3]; 148 ih[1].reset(&one); 149 ih[2].reset(&one); 150 const unsigned sh = sizeof(ih)/sizeof(ih[0]); 151 r = std::unique(Iter(ih), Iter(ih+sh)); 152 assert(base(r) == ih + 2); 153 assert(ih[0] == 0); 154 assert(*ih[1] == 1); 155 156 Ptr ii[7]; 157 ii[1].reset(&one); 158 ii[2].reset(&one); 159 ii[3].reset(&one); 160 ii[4].reset(&two); 161 ii[5].reset(&two); 162 ii[6].reset(&two); 163 const unsigned si = sizeof(ii)/sizeof(ii[0]); 164 r = std::unique(Iter(ii), Iter(ii+si)); 165 assert(base(r) == ii + 3); 166 assert(ii[0] == 0); 167 assert(*ii[1] == 1); 168 assert(*ii[2] == 2); 169 } 170 #endif // TEST_STD_VER >= 11 171 172 int main() 173 { 174 test<forward_iterator<int*> >(); 175 test<bidirectional_iterator<int*> >(); 176 test<random_access_iterator<int*> >(); 177 test<int*>(); 178 179 #if TEST_STD_VER >= 11 180 test1<forward_iterator<Ptr*> >(); 181 test1<bidirectional_iterator<Ptr*> >(); 182 test1<random_access_iterator<Ptr*> >(); 183 test1<Ptr*>(); 184 #endif 185 } 186