//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <unordered_set>
// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
// class Alloc = allocator<Value>>
// class unordered_set
// local_iterator begin (size_type n);
// local_iterator end (size_type n);
// const_local_iterator begin (size_type n) const;
// const_local_iterator end (size_type n) const;
// const_local_iterator cbegin(size_type n) const;
// const_local_iterator cend (size_type n) const;
#include <unordered_set>
#include <cassert>
int main(int, char**)
{
{
typedef std::unordered_set<int> C;
typedef int P;
typedef C::local_iterator I;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
C c(a, a + sizeof(a)/sizeof(a[0]));
assert(c.bucket_count() >= 5);
C::size_type b = c.bucket(0);
I i = c.begin(b);
I j = c.end(b);
assert(std::distance(i, j) == 0);
b = c.bucket(1);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 2);
assert(*i == 1);
++i;
assert(*i == 1);
*i = 2;
b = c.bucket(2);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 2);
assert(*i == 2);
++i;
assert(*i == 2);
b = c.bucket(3);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 1);
assert(*i == 3);
b = c.bucket(4);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 1);
assert(*i == 4);
b = c.bucket(5);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 0);
b = c.bucket(6);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 0);
}
{
typedef std::unordered_set<int> C;
typedef int P;
typedef C::const_local_iterator I;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
const C c(a, a + sizeof(a)/sizeof(a[0]));
assert(c.bucket_count() >= 5);
C::size_type b = c.bucket(0);
I i = c.begin(b);
I j = c.end(b);
assert(std::distance(i, j) == 0);
b = c.bucket(1);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 2);
assert(*i == 1);
++i;
assert(*i == 1);
b = c.bucket(2);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 2);
assert(*i == 2);
++i;
assert(*i == 2);
b = c.bucket(3);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 1);
assert(*i == 3);
b = c.bucket(4);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 1);
assert(*i == 4);
b = c.bucket(5);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 0);
b = c.bucket(6);
i = c.begin(b);
j = c.end(b);
assert(std::distance(i, j) == 0);
}
{
typedef std::unordered_set<int> C;
typedef int P;
typedef C::const_local_iterator I;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
C c(a, a + sizeof(a)/sizeof(a[0]));
assert(c.bucket_count() >= 5);
C::size_type b = c.bucket(0);
I i = c.cbegin(b);
I j = c.cend(b);
assert(std::distance(i, j) == 0);
b = c.bucket(1);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 2);
assert(*i == 1);
++i;
assert(*i == 1);
b = c.bucket(2);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 2);
assert(*i == 2);
++i;
assert(*i == 2);
b = c.bucket(3);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 1);
assert(*i == 3);
b = c.bucket(4);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 1);
assert(*i == 4);
b = c.bucket(5);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 0);
b = c.bucket(6);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 0);
}
{
typedef std::unordered_set<int> C;
typedef int P;
typedef C::const_local_iterator I;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
const C c(a, a + sizeof(a)/sizeof(a[0]));
assert(c.bucket_count() >= 5);
C::size_type b = c.bucket(0);
I i = c.cbegin(b);
I j = c.cend(b);
assert(std::distance(i, j) == 0);
b = c.bucket(1);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 2);
assert(*i == 1);
++i;
assert(*i == 1);
b = c.bucket(2);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 2);
assert(*i == 2);
++i;
assert(*i == 2);
b = c.bucket(3);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 1);
assert(*i == 3);
b = c.bucket(4);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 1);
assert(*i == 4);
b = c.bucket(5);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 0);
b = c.bucket(6);
i = c.cbegin(b);
j = c.cend(b);
assert(std::distance(i, j) == 0);
}
return 0;
}
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