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/*************************************************************************
*
* Copyright 2018 Realm Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**************************************************************************/
#ifndef REALM_COLUMN_INTEGER_HPP
#define REALM_COLUMN_INTEGER_HPP
#include <realm/bplustree.hpp>
#include <realm/array_integer.hpp>
#include <realm/array_key.hpp>
namespace realm {
class IntegerColumn;
class IntegerColumnIterator {
public:
typedef std::random_access_iterator_tag iterator_category;
typedef int64_t value_type;
typedef ptrdiff_t difference_type;
typedef const value_type* pointer;
typedef const value_type& reference;
IntegerColumnIterator(const IntegerColumn* tree, size_t pos)
: m_tree(tree)
, m_pos(pos)
{
}
size_t get_position() const
{
return m_pos;
}
int64_t operator->() const;
int64_t operator*() const;
int64_t operator[](size_t ndx) const;
IntegerColumnIterator& operator++()
{
m_pos++;
return *this;
}
IntegerColumnIterator operator++(int)
{
IntegerColumnIterator tmp(*this);
operator++();
return tmp;
}
IntegerColumnIterator& operator--()
{
m_pos--;
return *this;
}
IntegerColumnIterator& operator+=(ptrdiff_t adj)
{
m_pos += adj;
return *this;
}
IntegerColumnIterator& operator-=(ptrdiff_t adj)
{
m_pos -= adj;
return *this;
}
IntegerColumnIterator operator+(ptrdiff_t adj)
{
return {m_tree, m_pos + adj};
}
IntegerColumnIterator operator-(ptrdiff_t adj)
{
return {m_tree, m_pos - adj};
}
IntegerColumnIterator operator--(int)
{
IntegerColumnIterator tmp(*this);
operator--();
return tmp;
}
ptrdiff_t operator-(const IntegerColumnIterator& rhs)
{
return m_pos - rhs.m_pos;
}
bool operator!=(const IntegerColumnIterator& rhs) const
{
return m_pos != rhs.m_pos;
}
bool operator==(const IntegerColumnIterator& rhs) const
{
return m_pos == rhs.m_pos;
}
bool operator>(const IntegerColumnIterator& rhs) const
{
return m_pos > rhs.m_pos;
}
bool operator<(const IntegerColumnIterator& rhs) const
{
return m_pos < rhs.m_pos;
}
bool operator>=(const IntegerColumnIterator& rhs) const
{
return m_pos >= rhs.m_pos;
}
bool operator<=(const IntegerColumnIterator& rhs) const
{
return m_pos <= rhs.m_pos;
}
private:
const IntegerColumn* m_tree;
size_t m_pos;
};
class IntegerColumn : public BPlusTree<int64_t> {
public:
using const_iterator = IntegerColumnIterator;
IntegerColumn(Allocator& alloc, ref_type ref = 0)
: BPlusTree(alloc)
{
if (ref != 0)
init_from_ref(ref);
}
int64_t back()
{
return get(size() - 1);
}
IntegerColumnIterator cbegin() const
{
return IntegerColumnIterator(this, 0);
}
IntegerColumnIterator cend() const
{
return IntegerColumnIterator(this, size());
}
};
inline int64_t IntegerColumnIterator::operator->() const
{
return m_tree->get(m_pos);
}
inline int64_t IntegerColumnIterator::operator*() const
{
return m_tree->get(m_pos);
}
inline int64_t IntegerColumnIterator::operator[](size_t ndx) const
{
return m_tree->get(m_pos + ndx);
}
inline std::ostream& operator<<(std::ostream& out, const IntegerColumnIterator& it)
{
out << "IntegerColumnIterator at index: " << it.get_position();
return out;
}
}
#endif /* REALM_COLUMN_INTEGER_HPP */
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