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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<class Iter, IntegralLike Size, class T>
// requires OutputIterator<Iter, const T&>
// OutputIterator
// fill_n(Iter first, Size n, const T& value);
#include <algorithm>
#include <cassert>
#include "test_iterators.h"
template <class Iter>
void
test_char()
{
const unsigned n = 4;
char ca[n] = {0};
assert(std::fill_n(Iter(ca), n, char(1)) == std::next(Iter(ca), n));
assert(ca[0] == 1);
assert(ca[1] == 1);
assert(ca[2] == 1);
assert(ca[3] == 1);
}
template <class Iter>
void
test_int()
{
const unsigned n = 4;
int ia[n] = {0};
assert(std::fill_n(Iter(ia), n, 1) == std::next(Iter(ia), n));
assert(ia[0] == 1);
assert(ia[1] == 1);
assert(ia[2] == 1);
assert(ia[3] == 1);
}
void
test_int_array()
{
const unsigned n = 4;
int ia[n] = {0};
assert(std::fill_n(ia, n, static_cast<char>(1)) == std::next(ia, n));
assert(ia[0] == 1);
assert(ia[1] == 1);
assert(ia[2] == 1);
assert(ia[3] == 1);
}
struct source {
source() : i(0) { }
operator int() const { return i++; }
mutable int i;
};
void
test_int_array_struct_source()
{
const unsigned n = 4;
int ia[n] = {0};
assert(std::fill_n(ia, n, source()) == std::next(ia, n));
assert(ia[0] == 0);
assert(ia[1] == 1);
assert(ia[2] == 2);
assert(ia[3] == 3);
}
struct test1 {
test1() : c(0) { }
test1(char c) : c(c + 1) { }
char c;
};
void
test_struct_array()
{
const unsigned n = 4;
test1 test1a[n] = {0};
assert(std::fill_n(test1a, n, static_cast<char>(10)) == std::next(test1a, n));
assert(test1a[0].c == 11);
assert(test1a[1].c == 11);
assert(test1a[2].c == 11);
assert(test1a[3].c == 11);
}
class A
{
char a_;
public:
A() {}
explicit A(char a) : a_(a) {}
operator unsigned char() const {return 'b';}
friend bool operator==(const A& x, const A& y)
{return x.a_ == y.a_;}
};
void
test5()
{
A a[3];
assert(std::fill_n(&a[0], 3, A('a')) == a+3);
assert(a[0] == A('a'));
assert(a[1] == A('a'));
assert(a[2] == A('a'));
}
struct Storage
{
union
{
unsigned char a;
unsigned char b;
};
};
void test6()
{
Storage foo[5];
std::fill_n(&foo[0], 5, Storage());
}
int main()
{
test_char<forward_iterator<char*> >();
test_char<bidirectional_iterator<char*> >();
test_char<random_access_iterator<char*> >();
test_char<char*>();
test_int<forward_iterator<int*> >();
test_int<bidirectional_iterator<int*> >();
test_int<random_access_iterator<int*> >();
test_int<int*>();
test_int_array();
test_int_array_struct_source();
test_struct_array();
test5();
test6();
}
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