52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include "utils/option.hpp"
|
|
|
|
// Defines Including as [ and Excluding < for ranges.
|
|
enum BorderType
|
|
{
|
|
Including = 0,
|
|
Excluding = 1,
|
|
};
|
|
|
|
template <class T>
|
|
class Border
|
|
{
|
|
|
|
public:
|
|
Border() : key(Option<T>()), type(Including) {}
|
|
Border(T Tey, BorderType type) : key(Option<T>(std::move(key))), type(type)
|
|
{
|
|
}
|
|
|
|
// Border(Border &other) = default;
|
|
Border(Border &other) = default;
|
|
Border(Border &&other) = default;
|
|
|
|
Border &operator=(Border &&other) = default;
|
|
Border &operator=(Border &other) = default;
|
|
|
|
// true if no border or this > key or this >= key depends on border type.
|
|
bool operator>(const T &other) const
|
|
{
|
|
return !key.is_present() || key.get() > other ||
|
|
(type == Including && key.get() == other);
|
|
}
|
|
|
|
// true if no border or this < key or this <= key depends on border type.
|
|
bool operator<(const T &other) const
|
|
{
|
|
return !key.is_present() || key.get() < other ||
|
|
(type == Including && key.get() == other);
|
|
}
|
|
|
|
Option<T> key;
|
|
const BorderType type;
|
|
};
|
|
|
|
template <class T>
|
|
auto make_inf_border()
|
|
{
|
|
return Border<T>();
|
|
}
|