interval.hpp

/*
    SPDX-License-Identifier: MIT
    Copyright © 2023 Amebis
*/
 
#pragma once
 
#include "sal.hpp"
#include <vector>
 
namespace stdex
{
    template <class T>
    struct interval
    {
        T start; 
        T end;   
 
        inline interval() noexcept : start(1), end(0) {}
 
        inline interval(_In_ T x) noexcept : start(x), end(x) {}
 
        inline interval(_In_ T _start, _In_ T _end) noexcept : start(_start), end(_end) {}
 
        inline T size() const { return start <= end ? end - start : 0; }
 
        inline bool empty() const { return start >= end; }
 
        inline operator bool() const { return start <= end; }
 
        inline bool operator==(const interval& other) const { return start == other.start && end == other.end; }
 
        inline bool operator!=(const interval& other) const { return !operator==(other); }
    };
 
    template <class T, class _Alloc = std::allocator<interval<T>>>
    using interval_vector = std::vector<interval<T>, _Alloc>;
}