iterator.pass.cpp
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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <map>
// class multimap
// iterator begin();
// const_iterator begin() const;
// iterator end();
// const_iterator end() const;
//
// reverse_iterator rbegin();
// const_reverse_iterator rbegin() const;
// reverse_iterator rend();
// const_reverse_iterator rend() const;
//
// const_iterator cbegin() const;
// const_iterator cend() const;
// const_reverse_iterator crbegin() const;
// const_reverse_iterator crend() const;
#include <map>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::pair<const int, double> V;
V ar[] =
{
V(1, 1),
V(1, 1.5),
V(1, 2),
V(2, 1),
V(2, 1.5),
V(2, 2),
V(3, 1),
V(3, 1.5),
V(3, 2),
V(4, 1),
V(4, 1.5),
V(4, 2),
V(5, 1),
V(5, 1.5),
V(5, 2),
V(6, 1),
V(6, 1.5),
V(6, 2),
V(7, 1),
V(7, 1.5),
V(7, 2),
V(8, 1),
V(8, 1.5),
V(8, 2)
};
std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
std::multimap<int, double>::iterator i;
i = m.begin();
std::multimap<int, double>::const_iterator k = i;
assert(i == k);
for (int j = 1; j <= 8; ++j)
for (double d = 1; d <= 2; d += .5, ++i)
{
assert(i->first == j);
assert(i->second == d);
i->second = 2.5;
assert(i->second == 2.5);
}
}
{
typedef std::pair<const int, double> V;
V ar[] =
{
V(1, 1),
V(1, 1.5),
V(1, 2),
V(2, 1),
V(2, 1.5),
V(2, 2),
V(3, 1),
V(3, 1.5),
V(3, 2),
V(4, 1),
V(4, 1.5),
V(4, 2),
V(5, 1),
V(5, 1.5),
V(5, 2),
V(6, 1),
V(6, 1.5),
V(6, 2),
V(7, 1),
V(7, 1.5),
V(7, 2),
V(8, 1),
V(8, 1.5),
V(8, 2)
};
const std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
std::multimap<int, double>::const_iterator i;
i = m.begin();
for (int j = 1; j <= 8; ++j)
for (double d = 1; d <= 2; d += .5, ++i)
{
assert(i->first == j);
assert(i->second == d);
}
}
#if TEST_STD_VER >= 11
{
typedef std::pair<const int, double> V;
V ar[] =
{
V(1, 1),
V(1, 1.5),
V(1, 2),
V(2, 1),
V(2, 1.5),
V(2, 2),
V(3, 1),
V(3, 1.5),
V(3, 2),
V(4, 1),
V(4, 1.5),
V(4, 2),
V(5, 1),
V(5, 1.5),
V(5, 2),
V(6, 1),
V(6, 1.5),
V(6, 2),
V(7, 1),
V(7, 1.5),
V(7, 2),
V(8, 1),
V(8, 1.5),
V(8, 2)
};
std::multimap<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
std::multimap<int, double, std::less<int>, min_allocator<V>>::iterator i;
i = m.begin();
std::multimap<int, double, std::less<int>, min_allocator<V>>::const_iterator k = i;
assert(i == k);
for (int j = 1; j <= 8; ++j)
for (double d = 1; d <= 2; d += .5, ++i)
{
assert(i->first == j);
assert(i->second == d);
i->second = 2.5;
assert(i->second == 2.5);
}
}
{
typedef std::pair<const int, double> V;
V ar[] =
{
V(1, 1),
V(1, 1.5),
V(1, 2),
V(2, 1),
V(2, 1.5),
V(2, 2),
V(3, 1),
V(3, 1.5),
V(3, 2),
V(4, 1),
V(4, 1.5),
V(4, 2),
V(5, 1),
V(5, 1.5),
V(5, 2),
V(6, 1),
V(6, 1.5),
V(6, 2),
V(7, 1),
V(7, 1.5),
V(7, 2),
V(8, 1),
V(8, 1.5),
V(8, 2)
};
const std::multimap<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
std::multimap<int, double, std::less<int>, min_allocator<V>>::const_iterator i;
i = m.begin();
for (int j = 1; j <= 8; ++j)
for (double d = 1; d <= 2; d += .5, ++i)
{
assert(i->first == j);
assert(i->second == d);
}
}
#endif
#if TEST_STD_VER > 11
{ // N3644 testing
typedef std::multimap<int, double> C;
C::iterator ii1{}, ii2{};
C::iterator ii4 = ii1;
C::const_iterator cii{};
assert ( ii1 == ii2 );
assert ( ii1 == ii4 );
assert (!(ii1 != ii2 ));
assert ( (ii1 == cii ));
assert ( (cii == ii1 ));
assert (!(ii1 != cii ));
assert (!(cii != ii1 ));
}
#endif
return 0;
}