vector.hpp

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//---------------------------------------------------------------------------//
// Copyright (c) 2020-2021 Mikhail Komarov <nemo@nil.foundation>
// Copyright (c) 2020-2021 Nikita Kaskov <nbering@nil.foundation>
// Copyright (c) 2020-2021 Ilias Khairullin <ilias@nil.foundation>
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//---------------------------------------------------------------------------//
 
#ifndef CRYPTO3_ALGEBRA_VECTOR_CLASS_HPP
#define CRYPTO3_ALGEBRA_VECTOR_CLASS_HPP
 
#include <nil/crypto3/detail/same_value.hpp>
#include <nil/crypto3/detail/assert.hpp>
 
#include <array>
#include <cstddef>
 
namespace nil {
    namespace crypto3 {
        namespace algebra {
 
            template<typename T, std::size_t N>
            struct vector {
                static_assert(N != 0, "vector must contain at least one element");
                // CRYPTO3_DETAIL_ASSERT_ARITHMETIC(T)
 
                using value_type = T;
                using size_type = std::size_t;
                static constexpr size_type size = N;    
 
 
                constexpr T &operator[](size_type i) noexcept {
                    return array[i];
                }
 
                constexpr const T &operator[](size_type i) const noexcept {
                    return array[i];
                }
 
 
                constexpr T *begin() noexcept {
                    return array;
                }
 
                constexpr T *end() noexcept {
                    return array + N;
                }
 
                constexpr const T *cbegin() const noexcept {
                    return array;
                }
 
                constexpr const T *cend() const noexcept {
                    return array + N;
                }
 
            private:
                T array[N];    
            };
 
            template<typename... Args>
            constexpr decltype(auto) make_vector(Args... args) {
                return vector {args...};
            }
 
 
            template<typename T, typename... U>
            vector(T, U...) -> vector<std::enable_if_t<(std::is_same_v<T, U> && ...), T>, 1 + sizeof...(U)>;
 
            template<typename T, std::size_t N>
            vector(const T (&)[N]) -> vector<T, N>;
 
 
        }    // namespace algebra
    }        // namespace crypto3
}    // namespace nil
#endif    // CRYPTO3_ALGEBRA_VECTOR_CLASS_HPP