39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2019, Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include <algorithm>
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///////////////////////////////////////////////////////////////////////////////
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namespace cruft {
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/// A simple string-like class that allows constexpr representation of
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/// strings.
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///
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/// This allows strings to be represented as instances of fixed_string in
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/// template parameters (rather than using vendor specific array
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/// extensions).
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template <std::size_t N>
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struct fixed_string {
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char value[N + 1] {};
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constexpr
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fixed_string (char const _value[N+1]) noexcept
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{
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std::copy_n (std::begin (_value), N, std::begin (value));
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}
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constexpr operator char const* () const { return value; }
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};
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template <std::size_t N>
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fixed_string (char const (&)[N]) -> fixed_string<N - 1>;
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}
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