mapping.hpp

/*
    SPDX-License-Identifier: MIT
    Copyright © 2023 Amebis
*/
 
#pragma once
 
#include "sal.hpp"
#include <vector>
 
namespace stdex
{
    template <class T>
    struct mapping {
        T from; // index in source string
        T to;   // index in destination string
 
        inline mapping() : from(0), to(0) {}
        inline mapping(_In_ T x) : from(x), to(x) {}
        inline mapping(_In_ T _from, _In_ T _to) : from(_from), to(_to) {}
 
        friend bool operator ==(_In_ stdex::mapping<T> const& a, _In_ stdex::mapping<T> const& b) noexcept { return a.from == b.from && a.to == b.to; }
        friend bool operator !=(_In_ stdex::mapping<T> const& a, _In_ stdex::mapping<T> const& b) noexcept { return !(a == b); }
    };
 
    template <class T, class _Alloc = std::allocator<mapping<T>>>
    using mapping_vector = std::vector<mapping<T>, _Alloc>;
}