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<class Iter, IntegralLike Size, class T> 13 // requires OutputIterator<Iter, const T&> 14 // OutputIterator 15 // fill_n(Iter first, Size n, const T& value); 16 17 #include <algorithm> 18 #include <cassert> 19 20 #include "test_iterators.h" 21 #include "user_defined_integral.hpp" 22 23 typedef UserDefinedIntegral<unsigned> UDI; 24 25 template <class Iter> 26 void 27 test_char() 28 { 29 const unsigned n = 4; 30 char ca[n] = {0}; 31 assert(std::fill_n(Iter(ca), UDI(n), char(1)) == std::next(Iter(ca), n)); 32 assert(ca[0] == 1); 33 assert(ca[1] == 1); 34 assert(ca[2] == 1); 35 assert(ca[3] == 1); 36 } 37 38 template <class Iter> 39 void 40 test_int() 41 { 42 const unsigned n = 4; 43 int ia[n] = {0}; 44 assert(std::fill_n(Iter(ia), UDI(n), 1) == std::next(Iter(ia), n)); 45 assert(ia[0] == 1); 46 assert(ia[1] == 1); 47 assert(ia[2] == 1); 48 assert(ia[3] == 1); 49 } 50 51 void 52 test_int_array() 53 { 54 const unsigned n = 4; 55 int ia[n] = {0}; 56 assert(std::fill_n(ia, UDI(n), static_cast<char>(1)) == std::next(ia, n)); 57 assert(ia[0] == 1); 58 assert(ia[1] == 1); 59 assert(ia[2] == 1); 60 assert(ia[3] == 1); 61 } 62 63 struct source { 64 source() : i(0) { } 65 66 operator int() const { return i++; } 67 mutable int i; 68 }; 69 70 void 71 test_int_array_struct_source() 72 { 73 const unsigned n = 4; 74 int ia[n] = {0}; 75 assert(std::fill_n(ia, UDI(n), source()) == std::next(ia, n)); 76 assert(ia[0] == 0); 77 assert(ia[1] == 1); 78 assert(ia[2] == 2); 79 assert(ia[3] == 3); 80 } 81 82 struct test1 { 83 test1() : c(0) { } 84 test1(char xc) : c(xc + 1) { } 85 char c; 86 }; 87 88 void 89 test_struct_array() 90 { 91 const unsigned n = 4; 92 test1 test1a[n] = {0}; 93 assert(std::fill_n(test1a, UDI(n), static_cast<char>(10)) == std::next(test1a, n)); 94 assert(test1a[0].c == 11); 95 assert(test1a[1].c == 11); 96 assert(test1a[2].c == 11); 97 assert(test1a[3].c == 11); 98 } 99 100 class A 101 { 102 char a_; 103 public: 104 A() {} 105 explicit A(char a) : a_(a) {} 106 operator unsigned char() const {return 'b';} 107 108 friend bool operator==(const A& x, const A& y) 109 {return x.a_ == y.a_;} 110 }; 111 112 void 113 test5() 114 { 115 A a[3]; 116 assert(std::fill_n(&a[0], UDI(3), A('a')) == a+3); 117 assert(a[0] == A('a')); 118 assert(a[1] == A('a')); 119 assert(a[2] == A('a')); 120 } 121 122 struct Storage 123 { 124 union 125 { 126 unsigned char a; 127 unsigned char b; 128 }; 129 }; 130 131 void test6() 132 { 133 Storage foo[5]; 134 std::fill_n(&foo[0], UDI(5), Storage()); 135 } 136 137 138 int main() 139 { 140 test_char<forward_iterator<char*> >(); 141 test_char<bidirectional_iterator<char*> >(); 142 test_char<random_access_iterator<char*> >(); 143 test_char<char*>(); 144 145 test_int<forward_iterator<int*> >(); 146 test_int<bidirectional_iterator<int*> >(); 147 test_int<random_access_iterator<int*> >(); 148 test_int<int*>(); 149 150 test_int_array(); 151 test_int_array_struct_source(); 152 test_struct_array(); 153 154 test5(); 155 test6(); 156 } 157
